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Merge pull request #152 from tom5079/master2
2024-11-18 19:58:22 -08:00 · 2024-06-30 13:40:57 -07:00 · 2024-04-23 11:21:07 -07:00 · 2024-04-17 23:25:36 -07:00 · 2024-04-15 18:19:49 -07:00 · 2024-04-11 08:44:56 -07:00
320 changed files with 10535 additions and 5933 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -1,19 +1,33 @@
 # Gradle files
 .gradle/
 build/
 # Local configuration file (sdk path, etc)
 local.properties
 # Log/OS Files
 *.log
 # Android Studio generated files and folders
 captures/
 .externalNativeBuild/
 .cxx/
 *.apk
 output.json
 # IntelliJ
 *.iml
-.gradle
+.idea/
-/local.properties
+misc.xml
-/.idea/caches
+deploymentTargetDropDown.xml
-/.idea/libraries
+render.experimental.xml
 /.idea/modules.xml
 /.idea/workspace.xml
 /.idea/navEditor.xml
 /.idea/assetWizardSettings.xml
 .DS_Store
 /build
 /captures
 .externalNativeBuild
-#Github pages
+# Keystore files
-/gh-pages
+*.jks
 *.keystore
-#Private files
+# Google Services (e.g. APIs or Firebase)
-**/google-services.json
+google-services.json
 # Android Profiling
 *.hprof
--- a/.idea/codeStyles/Project.xml
+++ b/.idea/codeStyles/Project.xml
@@ -1,126 +0,0 @@
 <component name="ProjectCodeStyleConfiguration">
  <code_scheme name="Project" version="173">
    <option name="RIGHT_MARGIN" value="120" />
    <AndroidXmlCodeStyleSettings>
      <option name="ARRANGEMENT_SETTINGS_MIGRATED_TO_191" value="true" />
    </AndroidXmlCodeStyleSettings>
    <JetCodeStyleSettings>
      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
    </JetCodeStyleSettings>
    <codeStyleSettings language="XML">
      <indentOptions>
        <option name="CONTINUATION_INDENT_SIZE" value="4" />
      </indentOptions>
      <arrangement>
        <rules>
          <section>
            <rule>
              <match>
                <AND>
                  <NAME>xmlns:android</NAME>
                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>^$</XML_NAMESPACE>
                </AND>
              </match>
            </rule>
          </section>
          <section>
            <rule>
              <match>
                <AND>
                  <NAME>xmlns:.*</NAME>
                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>^$</XML_NAMESPACE>
                </AND>
              </match>
              <order>BY_NAME</order>
            </rule>
          </section>
          <section>
            <rule>
              <match>
                <AND>
                  <NAME>.*:id</NAME>
                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
                </AND>
              </match>
            </rule>
          </section>
          <section>
            <rule>
              <match>
                <AND>
                  <NAME>.*:name</NAME>
                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
                </AND>
              </match>
            </rule>
          </section>
          <section>
            <rule>
              <match>
                <AND>
                  <NAME>name</NAME>
                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>^$</XML_NAMESPACE>
                </AND>
              </match>
            </rule>
          </section>
          <section>
            <rule>
              <match>
                <AND>
                  <NAME>style</NAME>
                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>^$</XML_NAMESPACE>
                </AND>
              </match>
            </rule>
          </section>
          <section>
            <rule>
              <match>
                <AND>
                  <NAME>.*</NAME>
                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>^$</XML_NAMESPACE>
                </AND>
              </match>
              <order>BY_NAME</order>
            </rule>
          </section>
          <section>
            <rule>
              <match>
                <AND>
                  <NAME>.*</NAME>
                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
                </AND>
              </match>
              <order>ANDROID_ATTRIBUTE_ORDER</order>
            </rule>
          </section>
          <section>
            <rule>
              <match>
                <AND>
                  <NAME>.*</NAME>
                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>.*</XML_NAMESPACE>
                </AND>
              </match>
              <order>BY_NAME</order>
            </rule>
          </section>
        </rules>
      </arrangement>
    </codeStyleSettings>
    <codeStyleSettings language="kotlin">
      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
    </codeStyleSettings>
  </code_scheme>
 </component>
--- a/.idea/codeStyles/codeStyleConfig.xml
+++ b/.idea/codeStyles/codeStyleConfig.xml
@@ -1,5 +0,0 @@
 <component name="ProjectCodeStyleConfiguration">
  <state>
    <option name="USE_PER_PROJECT_SETTINGS" value="true" />
  </state>
 </component>
--- a/.idea/copyright/Apache.xml
+++ b/.idea/copyright/Apache.xml
@@ -1,6 +0,0 @@
 <component name="CopyrightManager">
  <copyright>
    <option name="notice" value="   Copyright &amp;#36;today.year tom5079&#10;&#10;   Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);&#10;   you may not use this file except in compliance with the License.&#10;   You may obtain a copy of the License at&#10;&#10;     http://www.apache.org/licenses/LICENSE-2.0&#10;&#10;   Unless required by applicable law or agreed to in writing, software&#10;   distributed under the License is distributed on an &quot;AS IS&quot; BASIS,&#10;   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.&#10;   See the License for the specific language governing permissions and&#10;   limitations under the License." />
    <option name="myName" value="Apache" />
  </copyright>
 </component>
--- a/.idea/copyright/GPL.xml
+++ b/.idea/copyright/GPL.xml
@@ -1,6 +0,0 @@
 <component name="CopyrightManager">
  <copyright>
    <option name="notice" value="    Pupil, Hitomi.la viewer for Android&#10;    Copyright (C) &amp;#36;today.year  tom5079&#10;&#10;    This program is free software: you can redistribute it and/or modify&#10;    it under the terms of the GNU General Public License as published by&#10;    the Free Software Foundation, either version 3 of the License, or&#10;    (at your option) any later version.&#10;&#10;    This program is distributed in the hope that it will be useful,&#10;    but WITHOUT ANY WARRANTY; without even the implied warranty of&#10;    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the&#10;    GNU General Public License for more details.&#10;&#10;    You should have received a copy of the GNU General Public License&#10;    along with this program.  If not, see &lt;http://www.gnu.org/licenses/&gt;." />
    <option name="myName" value="GPL" />
  </copyright>
 </component>
--- a/.idea/copyright/profiles_settings.xml
+++ b/.idea/copyright/profiles_settings.xml
@@ -1,8 +0,0 @@
 <component name="CopyrightManager">
  <settings>
    <module2copyright>
      <element module="Pupil" copyright="GPL" />
      <element module="libpupil" copyright="Apache" />
    </module2copyright>
  </settings>
 </component>
--- a/.idea/encodings.xml
+++ b/.idea/encodings.xml
@@ -1,4 +0,0 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
  <component name="Encoding" addBOMForNewFiles="with NO BOM" />
 </project>
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -1,19 +0,0 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
  <component name="GradleSettings">
    <option name="linkedExternalProjectsSettings">
      <GradleProjectSettings>
        <option name="distributionType" value="DEFAULT_WRAPPED" />
        <option name="externalProjectPath" value="$PROJECT_DIR$" />
        <option name="modules">
          <set>
            <option value="$PROJECT_DIR$" />
            <option value="$PROJECT_DIR$/app" />
            <option value="$PROJECT_DIR$/libpupil" />
          </set>
        </option>
        <option name="resolveModulePerSourceSet" value="false" />
      </GradleProjectSettings>
    </option>
  </component>
 </project>
--- a/.idea/kotlinCodeInsightSettings.xml
+++ b/.idea/kotlinCodeInsightSettings.xml
@@ -1,7 +0,0 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
  <component name="KotlinCodeInsightWorkspaceSettings">
    <option name="addUnambiguousImportsOnTheFly" value="true" />
    <option name="optimizeImportsOnTheFly" value="true" />
  </component>
 </project>
--- a/.idea/kotlinc.xml
+++ b/.idea/kotlinc.xml
@@ -1,6 +0,0 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
  <component name="Kotlin2JvmCompilerArguments">
    <option name="jvmTarget" value="1.8" />
  </component>
 </project>
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,9 +0,0 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="1.8" project-jdk-type="JavaSDK">
    <output url="file://$PROJECT_DIR$/build/classes" />
  </component>
  <component name="ProjectType">
    <option name="id" value="Android" />
  </component>
 </project>
--- a/.idea/runConfigurations.xml
+++ b/.idea/runConfigurations.xml
@@ -1,12 +0,0 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
  <component name="RunConfigurationProducerService">
    <option name="ignoredProducers">
      <set>
        <option value="org.jetbrains.plugins.gradle.execution.test.runner.AllInPackageGradleConfigurationProducer" />
        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestClassGradleConfigurationProducer" />
        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestMethodGradleConfigurationProducer" />
      </set>
    </option>
  </component>
 </project>
--- a/.idea/scopes/Pupil.xml
+++ b/.idea/scopes/Pupil.xml
@@ -1,3 +0,0 @@
 <component name="DependencyValidationManager">
  <scope name="Pupil" pattern="file[app]:*/" />
 </component>
--- a/.idea/scopes/libpupil.xml
+++ b/.idea/scopes/libpupil.xml
@@ -1,3 +0,0 @@
 <component name="DependencyValidationManager">
  <scope name="libpupil" pattern="file[libpupil]:*/" />
 </component>
--- a/.idea/vcs.xml
+++ b/.idea/vcs.xml
@@ -1,6 +0,0 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
  <component name="VcsDirectoryMappings">
    <mapping directory="" vcs="Git" />
  </component>
 </project>
--- a/README.md
+++ b/README.md
@@ -1,16 +1,12 @@
 # Pupil
 ![Banner](https://github.com/tom5079/Pupil/blob/gh-pages/assets/images/pupil-banner.png?raw=true)
 *Pupil, Hitomi.la viewer for Android*  
-# Screenshot
+![](https://img.shields.io/github/downloads/tom5079/Pupil/total)  
-![Main Screen](https://github.com/tom5079/Pupil/blob/gh-pages/assets/images/main-screenshot.png?raw=true)
+[![](https://img.shields.io/github/downloads/tom5079/Pupil/5.3.13/Pupil-v5.3.13.apk?color=%234fc3f7&label=DOWNLOAD%20APP&style=for-the-badge)](https://github.com/tom5079/Pupil/releases/download/5.3.13/Pupil-v5.3.13.apk)  
-*Main Screen*
+[![](https://discordapp.com/api/guilds/610452916612104194/embed.png?style=banner2)](https://discord.gg/Stj4b5v)
-![Reader Screen](https://github.com/tom5079/Pupil/blob/gh-pages/assets/images/reader-screenshot.png?raw=true)
+# Features
-*Reader Screen*
+![Main Screen](https://github.com/tom5079/Pupil/blob/gh-pages/assets/images/main-screenshot.jpg?raw=true)
 Images are censored to be SFW
 # Installation
@@ -24,4 +20,7 @@ or Build app yourself
 # Contribution
-Any kind of contribution is appriciated. Feel free to leave PR! 
+Any kind of contribution is appreciated. Feel free to leave PR!
 ## Tag Translation
 Head over to [tags branch](https://github.com/tom5079/Pupil/tree/tags)
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,95 +1,145 @@
-apply plugin: 'com.android.application'
+apply plugin: "com.android.application"
-apply plugin: 'kotlin-android'
+apply plugin: "kotlin-android"
-apply plugin: 'kotlin-kapt'
+apply plugin: "kotlin-kapt"
-apply plugin: 'kotlin-android-extensions'
+apply plugin: "kotlin-parcelize"
-apply plugin: 'kotlinx-serialization'
+apply plugin: "kotlinx-serialization"
 apply plugin: "com.google.android.gms.oss-licenses-plugin"
 if (file("google-services.json").exists()) {
    logger.lifecycle("Firebase Enabled")
-    apply plugin: 'com.google.gms.google-services'
+    apply plugin: "com.google.gms.google-services"
-    apply plugin: 'io.fabric'
+    apply plugin: "com.google.firebase.crashlytics"
-    apply plugin: 'com.google.firebase.firebase-perf'
+    apply plugin: "com.google.firebase.firebase-perf"
 } else {
    logger.lifecycle("Firebase Disabled")
 }
 ext {
    okhttp_version = "3.12.12"
 }
 configurations {
    all {
        resolutionStrategy {
            eachDependency { DependencyResolveDetails details ->
                if (details.requested.group == "com.squareup.okhttp3" && details.requested.name == "okhttp") {
                    // OkHttp drops support before 5.0 since 3.13.0
                    details.useVersion okhttp_version
                }
            }
        }
    }
 }
 android {
    compileSdkVersion 29
    defaultConfig {
        applicationId "xyz.quaver.pupil"
        minSdkVersion 16
-        targetSdkVersion 29
+        compileSdk 34
-        versionCode 37
+        targetSdkVersion 34
-        versionName "5.3-beta4"
+        versionCode 69
        versionName "5.3.15"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
        multiDexEnabled true
        vectorDrawables.useSupportLibrary = true
    }
    buildTypes {
-        release {
+        debug {
            defaultConfig.minSdkVersion 21
            minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+            shrinkResources false
            debuggable true
            applicationIdSuffix ".debug"
            versionNameSuffix "-DEBUG"
            ext.enableCrashlytics = false
            ext.alwaysUpdateBuildId = false
        }
-        buildTypes.each {
+        release {
-            it.buildConfigField('boolean', 'CENSOR', 'false')
+            minifyEnabled true
            shrinkResources true
            proguardFiles getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro"
        }
    }
    buildFeatures {
        viewBinding true
    }
    kotlinOptions {
-        freeCompilerArgs += '-Xuse-experimental=kotlin.Experimental'
+        jvmTarget = JavaVersion.VERSION_11.toString()
        freeCompilerArgs += "-Xuse-experimental=kotlin.Experimental"
    }
    compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_8
+        sourceCompatibility JavaVersion.VERSION_11
-        targetCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_11
    }
    kotlinOptions {
        jvmTarget = JavaVersion.VERSION_1_8.toString()
    }
    buildToolsVersion = '29.0.2'
 }
 dependencies {
-    def markwonVersion = "3.0.1"
+    implementation fileTree(dir: "libs", include: ["*.jar", "*.aar"])
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.7.1"
    implementation "org.jetbrains.kotlinx:kotlinx-serialization-json:1.3.2"
    implementation "org.jetbrains.kotlinx:kotlinx-datetime:0.3.2"
    implementation "androidx.core:core-ktx:1.12.0"
    implementation "androidx.appcompat:appcompat:1.4.1"
    implementation "androidx.activity:activity-ktx:1.4.0"
    implementation "androidx.fragment:fragment-ktx:1.4.1"
    implementation "androidx.preference:preference-ktx:1.2.0"
    implementation "androidx.recyclerview:recyclerview:1.2.1"
    implementation "androidx.constraintlayout:constraintlayout:2.1.4"
    implementation "androidx.gridlayout:gridlayout:1.0.0"
    implementation "androidx.biometric:biometric:1.1.0"
    implementation "androidx.work:work-runtime-ktx:2.7.1"
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
    implementation "org.jetbrains.kotlin:kotlin-reflect:$kotlin_version"
    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.3'
    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.3'
    implementation "org.jetbrains.kotlinx:kotlinx-serialization-runtime:0.14.0"
    implementation 'androidx.appcompat:appcompat:1.1.0'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    implementation 'androidx.preference:preference:1.1.0'
    implementation 'androidx.gridlayout:gridlayout:1.0.0'
    implementation 'androidx.lifecycle:lifecycle-extensions:2.2.0'
    implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.2.0'
    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
    implementation "androidx.biometric:biometric:1.0.1"
    implementation 'com.android.support:multidex:1.0.3'
    implementation "com.daimajia.swipelayout:library:1.2.0@aar"
    implementation 'com.google.android.material:material:1.2.0-alpha04'
    implementation 'com.google.firebase:firebase-core:17.2.2'
    implementation 'com.google.firebase:firebase-perf:19.0.5'
    implementation 'com.crashlytics.sdk.android:crashlytics:2.10.1'
    implementation 'com.github.arimorty:floatingsearchview:2.1.1'
    implementation 'com.github.clans:fab:1.6.4'
    implementation 'com.github.bumptech.glide:glide:4.10.0'
    implementation('com.github.bumptech.glide:recyclerview-integration:4.11.0') {
        transitive = false
    }
    implementation 'net.rdrei.android.dirchooser:library:3.2@aar'
    implementation 'com.gu:option:1.3'
    implementation 'com.github.chrisbanes:PhotoView:2.3.0'
    implementation 'com.andrognito.patternlockview:patternlockview:1.0.0'
    implementation "ru.noties.markwon:core:${markwonVersion}"
    kapt 'com.github.bumptech.glide:compiler:4.10.0'
    testImplementation 'junit:junit:4.13'
    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
    androidTestImplementation 'androidx.test:rules:1.2.0'
    androidTestImplementation 'androidx.test:runner:1.2.0'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
    implementation project(path: ':libpupil')
 }
-androidExtensions {
+    implementation "com.google.android.material:material:1.11.0"
-    experimental = true
+
    implementation platform('com.google.firebase:firebase-bom:32.7.0')
    implementation "com.google.firebase:firebase-analytics-ktx"
    implementation "com.google.firebase:firebase-crashlytics-ktx"
    implementation "com.google.firebase:firebase-perf-ktx"
    implementation "com.google.android.gms:play-services-oss-licenses:17.0.1"
    implementation "com.google.android.gms:play-services-mlkit-face-detection:17.1.0"
    implementation "com.github.clans:fab:1.6.4"
    //implementation "com.quiph.ui:recyclerviewfastscroller:0.2.1"
    implementation 'com.github.piasy:BigImageViewer:1.8.1'
    implementation 'com.github.piasy:FrescoImageLoader:1.8.1'
    implementation 'com.github.piasy:FrescoImageViewFactory:1.8.1'
    implementation 'com.facebook.fresco:imagepipeline-okhttp3:2.6.0'
    //noinspection GradleDependency
    implementation "com.squareup.okhttp3:okhttp:$okhttp_version"
    implementation "io.ktor:ktor-network:2.3.10"
    implementation "com.tbuonomo.andrui:viewpagerdotsindicator:4.1.2"
    implementation "net.rdrei.android.dirchooser:library:3.2@aar"
    implementation "com.gu:option:1.3"
    implementation "com.andrognito.patternlockview:patternlockview:1.0.0"
    //implementation "com.andrognito.pinlockview:pinlockview:2.1.0"
    implementation "ru.noties.markwon:core:3.1.0"
    implementation "com.skyfishjy.ripplebackground:library:1.0.1"
    implementation "org.jsoup:jsoup:1.14.3"
    implementation "xyz.quaver:documentfilex:0.7.2"
    implementation "xyz.quaver:floatingsearchview:1.1.7"
    testImplementation "junit:junit:4.13.2"
    testImplementation "org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.1"
    androidTestImplementation "androidx.test.ext:junit:1.1.3"
    androidTestImplementation "androidx.test:rules:1.4.0"
    androidTestImplementation "androidx.test:runner:1.4.0"
    androidTestImplementation "androidx.test.espresso:espresso-core:3.4.0"
 }
--- a/app/libs/pinlockview-release.aar
+++ b/app/libs/pinlockview-release.aar
--- a/app/libs/recyclerviewfastscroller-release.aar
+++ b/app/libs/recyclerviewfastscroller-release.aar
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -19,3 +19,19 @@
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
 -dontobfuscate
 -keepattributes *Annotation*, InnerClasses
 -dontnote kotlinx.serialization.SerializationKt
 -keep,includedescriptorclasses class xyz.quaver.**$$serializer { *; } # <-- change package name to your app's
 -keepclassmembers class xyz.quaver.pupil.** { # <-- change package name to your app's
    *** Companion;
 }
 -keepclasseswithmembers class xyz.quaver.pupil.** { # <-- change package name to your app's
    kotlinx.serialization.KSerializer serializer(...);
 }
 -keep class xyz.quaver.pupil.ui.fragment.ManageFavoritesFragment
 -keep class xyz.quaver.pupil.ui.fragment.ManageStorageFragment
 -keep class xyz.quaver.pupil.** { *; }
 -keep class app.cash.zipline.** { *; }
--- a/app/release/output-metadata.json
+++ b/app/release/output-metadata.json
@@ -0,0 +1,20 @@
 {
  "version": 3,
  "artifactType": {
    "type": "APK",
    "kind": "Directory"
  },
  "applicationId": "xyz.quaver.pupil",
  "variantName": "release",
  "elements": [
    {
      "type": "SINGLE",
      "filters": [],
      "attributes": [],
      "versionCode": 69,
      "versionName": "5.3.14",
      "outputFile": "app-release.apk"
    }
  ],
  "elementType": "File"
 }
--- a/app/release/output.json
+++ b/app/release/output.json
@@ -1 +0,0 @@
 [{"outputType":{"type":"APK"},"apkData":{"type":"MAIN","splits":[],"versionCode":37,"versionName":"5.3-beta4","enabled":true,"outputFile":"app-release.apk","fullName":"release","baseName":"release"},"path":"app-release.apk","properties":{}}]
--- a/app/src/androidTest/java/xyz/quaver/pupil/ExampleInstrumentedTest.kt
+++ b/app/src/androidTest/java/xyz/quaver/pupil/ExampleInstrumentedTest.kt
@@ -21,30 +21,17 @@
 package xyz.quaver.pupil
 import android.util.Log
 import androidx.core.content.ContextCompat
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.platform.app.InstrumentationRegistry
 import androidx.test.rule.ActivityTestRule
 import kotlinx.coroutines.runBlocking
-import kotlinx.serialization.ImplicitReflectionSerializer
+import okhttp3.OkHttpClient
-import kotlinx.serialization.json.Json
+import okhttp3.Request
 import kotlinx.serialization.json.JsonConfiguration
 import kotlinx.serialization.json.JsonObject
 import org.junit.Assert.assertEquals
 import org.junit.Before
 import org.junit.Test
 import org.junit.runner.RunWith
-import xyz.quaver.hiyobi.cookie
+import xyz.quaver.pupil.hitomi.*
-import xyz.quaver.hiyobi.createImgList
+import java.util.*
-import xyz.quaver.hiyobi.getReader
+import java.util.concurrent.TimeUnit
 import xyz.quaver.hiyobi.user_agent
 import xyz.quaver.pupil.ui.LockActivity
 import xyz.quaver.pupil.util.download.Cache
 import xyz.quaver.pupil.util.download.DownloadWorker
 import xyz.quaver.pupil.util.getDownloadDirectory
 import xyz.quaver.pupil.util.updateOldReaderGalleries
 import java.io.File
 import java.net.URL
 import javax.net.ssl.HttpsURLConnection
 /**
 * Instrumented test, which will execute on an Android device.
@@ -53,105 +40,144 @@ import javax.net.ssl.HttpsURLConnection
 */
@RunWith(AndroidJUnit4::class)
 class ExampleInstrumentedTest {
 //    @Before
 //    fun init() {
 //        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
 //    }
-    @Test
+    @Before
-    fun useAppContext() {
+    fun init() {
-        // Context of the app under test.
+        clientBuilder = OkHttpClient.Builder()
-        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+            .readTimeout(0, TimeUnit.SECONDS)
-        Log.i("PUPILD", getDownloadDirectory(appContext).absolutePath ?: "")
+            .writeTimeout(0, TimeUnit.SECONDS)
-        assertEquals("xyz.quaver.pupil", appContext.packageName)
+            .callTimeout(0, TimeUnit.SECONDS)
            .connectTimeout(0, TimeUnit.SECONDS)
            .addInterceptor { chain ->
                val request = chain.request().newBuilder()
                    .header("Referer", "https://hitomi.la/")
                    .build()
                chain.proceed(request)
            }
    }
    @Test
-    fun checkCacheDir() {
+    fun test_empty() {
-        val activityTestRule = ActivityTestRule(LockActivity::class.java)
+        print(
-        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+            "".trim()
-
+                .replace(Regex("""^\?"""), "")
-        ContextCompat.getExternalFilesDirs(appContext, null).forEachIndexed { index, file ->
+                .lowercase(Locale.getDefault())
-            Log.i("PUPILD", "$index: ${file?.absolutePath}")
+                .split(Regex("\\s+"))
                .map {
                    it.replace('_', ' ')
                })
    }
    @Test
    fun test_nozomi() {
        val nozomi = getGalleryIDsFromNozomi(null, "index", "all")
        Log.d("PUPILD", nozomi.size.toString())
    }
    @Test
    fun test_search() {
        val ids = getGalleryIDsForQuery("language:korean").reversed()
        print(ids.size)
    }
    @Test
    fun test_suggestions() {
        val suggestions = getSuggestionsForQuery("language:g")
        print(suggestions)
    }
    @Test
    fun test_doSearch() {
-        val reader = getReader( 1426382)
+        val r = runBlocking {
-
+            doSearch("language:korean")
        val data: ByteArray
        with(URL(createImgList(1426382, reader)[0].path).openConnection() as HttpsURLConnection) {
            setRequestProperty("User-Agent", user_agent)
            setRequestProperty("Cookie", cookie)
            data = inputStream.readBytes()
        }
-        Log.d("Pupil", data.size.toString())
+        Log.d("PUPILD", r.take(10).toString())
    }
-    @UseExperimental(ImplicitReflectionSerializer::class)
+//    @Test
 //    fun test_getBlock() {
 //        val galleryBlock = getGalleryBlock(2097576)
 //
 //        print(galleryBlock)
 //    }
 //
 //    @Test
 //    fun test_getGallery() {
 //        val gallery = getGallery(2097751)
 //
 //        print(gallery)
 //    }
    @Test
-    fun test_deleteCodeFromReader() {
+    fun test_getGalleryInfo() {
-        val context = InstrumentationRegistry.getInstrumentation().targetContext
+        val info = getGalleryInfo(1469394)
-        val json = Json(JsonConfiguration.Stable)
+        print(info)
        listOf(
            getDownloadDirectory(context),
            File(context.cacheDir, "imageCache")
        ).forEach { root ->
            root.listFiles()?.forEach gallery@{ gallery ->
                val reader = json.parseJson(File(gallery, "reader.json").apply {
                    if (!exists())
                        return@gallery
                }.readText())
                    .jsonObject.toMutableMap()
                Log.d("PUPILD", gallery.name)
                reader.remove("code")
                File(gallery, "reader.json").writeText(JsonObject(reader).toString())
            }
        }
    }
    @Test
-    fun test_updateOldReader() {
+    fun test_getReader() {
-        val context = InstrumentationRegistry.getInstrumentation().targetContext
+        val reader = getGalleryInfo(2128654)
-        updateOldReaderGalleries(context)
+        Log.d("PUPILD", reader.toString())
    }
    @Test
-    fun test_downloadWorker() {
+    fun test_getImages() { runBlocking {
-        val context = InstrumentationRegistry.getInstrumentation().targetContext
+        val galleryID = 2128654
-        val galleryID = 515515
+        val images = getGalleryInfo(galleryID).files.map {
-
+            imageUrlFromImage(galleryID, it,false)
        val worker = DownloadWorker.getInstance(context)
        worker.queue.add(galleryID)
        while(worker.progress.indexOfKey(galleryID) < 0 || worker.progress[galleryID] != null) {
            Log.i("PUPILD", worker.progress[galleryID]?.joinToString(" ") ?: "null")
            if (worker.progress[galleryID]?.all { !it.isFinite() } == true)
                break
        }
-        Log.i("PUPILD", "DONE!!")
+        Log.d("PUPILD", images.toString())
    }
-    @Test
+//        images.forEachIndexed { index, image ->
-    fun test_getReaderOrNull() {
+//            println("Testing $index/${images.size}: $image")
-        val context = InstrumentationRegistry.getInstrumentation().targetContext
+//            val response = client.newCall(
 //                Request.Builder()
 //                    .url(image)
 //                    .header("Referer", "https://hitomi.la/")
 //                    .build()
 //            ).execute()
 //
 //            assertEquals(200, response.code())
 //
 //            println("$index/${images.size} Passed")
 //        }
    } }
-        val galleryID = 1561552
+//    @Test
 //    fun test_urlFromUrlFromHash() {
 //        val url = urlFromUrlFromHash(1531795, GalleryFiles(
 //            212, "719d46a7556be0d0021c5105878507129b5b3308b02cf67f18901b69dbb3b5ef", 1, "00.jpg", 300
 //        ), "webp")
 //
 //        print(url)
 //    }
-        runBlocking {
+//    @Test
-            Log.i("PUPILD", Cache(context).getReader(galleryID)?.title ?: "null")
+//    suspend fun test_doSearch_extreme() {
-        }
+//        val query = "language:korean -tag:sample -female:humiliation -female:diaper -female:strap-on -female:squirting -female:lizard_girl -female:voyeurism -type:artistcg -female:blood -female:ryona -male:blood -male:ryona -female:crotch_tattoo -male:urethra_insertion -female:living_clothes -male:tentacles -female:slave -female:gag -male:gag -female:wooden_horse -male:exhibitionism -male:miniguy -female:mind_break -male:mind_break -male:unbirth -tag:scanmark -tag:no_penetration -tag:nudity_only -female:enema -female:brain_fuck -female:navel_fuck -tag:novel -tag:mosaic_censorship -tag:webtoon -male:rape -female:rape -female:yuri -male:anal -female:anal -female:futanari -female:huge_breasts -female:big_areolae -male:torture -male:stuck_in_wall -female:stuck_in_wall -female:torture -female:birth -female:pregnant -female:drugs -female:bdsm -female:body_writing -female:cbt -male:dark_skin -male:insect -female:insect -male:vore -female:vore -female:vomit -female:urination -female:urethra_insertion -tag:mmf_threesome -female:sex_toys -female:double_penetration -female:eggs -female:prolapse -male:smell -male:bestiality -female:bestiality -female:big_ass -female:milf -female:mother -male:dilf -male:netorare -female:netorare -female:cosplaying -female:filming -female:armpit_sex -female:armpit_licking -female:tickling -female:lactation -male:skinsuit -female:skinsuit -male:bbm -female:prostitution -female:double_penetration -female:females_only -male:males_only -female:tentacles -female:tentacles -female:stomach_deformation -female:hairy_armpits -female:large_insertions -female:mind_control -male:orc -female:dark_skin -male:yandere -female:yandere -female:scat -female:toddlercon -female:bbw -female:hairy -male:cuntboy -male:lactation -male:drugs -female:body_modification -female:monoeye -female:chikan -female:long_tongue -female:harness -female:fisting -female:glory_hole -female:latex -male:latex -female:unbirth -female:giantess -female:sole_dickgirl -female:robot -female:doll_joints -female:machine -tag:artbook -male:cbt -female:farting -male:farting -male:midget -female:midget -female:exhibitionism  -male:monster -female:big_nipples -female:big_clit -female:gyaru -female:piercing -female:necrophilia -female:snuff -female:smell -male:cheating -female:cheating -male:snuff -female:harem -male:harem"
 //        print(doSearch(query).size)
 //    }
-        Log.i("PUPILD", Cache(context).getReaderOrNull(galleryID)?.title ?: "null")
+//    @Test
-    }
+//    suspend fun test_parse() {
 //        print(doSearch("-male:yaoi -female:yaoi -female:loli").size)
 //    }
 //    @Test
 //    fun test_subdomainFromUrl() {
 //        val galleryInfo = getGalleryInfo(1929109).files[2]
 //        print(urlFromUrlFromHash(1929109, galleryInfo, "webp", null, "a"))
 //    }
 }
--- a/app/src/main/res/layout/item_gallery_thumbnails.xml
+++ b/app/src/main/res/layout/item_gallery_thumbnails.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!--
  ~     Pupil, Hitomi.la viewer for Android
-  ~     Copyright (C) 2019  tom5079
+  ~     Copyright (C) 2020  tom5079
  ~
  ~     This program is free software: you can redistribute it and/or modify
  ~     it under the terms of the GNU General Public License as published by
@@ -17,7 +17,6 @@
  ~     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  -->
-<GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<resources xmlns:tools="http://schemas.android.com/tools">
-    android:layout_width="match_parent"
+    <string name="app_name" translatable="false" tools:override="true">Pupil-Debug</string>
-    android:layout_height="wrap_content"
+</resources>
    android:columnCount="3"/>
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -6,9 +6,22 @@
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
    <uses-permission android:name="android.permission.USE_BIOMETRIC" />
-    <uses-permission
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" android:maxSdkVersion="23"/>
-        android:name="android.permission.WRITE_EXTERNAL_STORAGE"
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" android:maxSdkVersion="23"/>
-        android:maxSdkVersion="21" />
+    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.VIBRATE"/>
    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_DATA_SYNC"/>
    <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
    <uses-permission android:name="android.permission.NEARBY_WIFI_DEVICES" android:usesPermissionFlags="neverForLocation"
        tools:targetApi="s" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" android:maxSdkVersion="32"
        tools:ignore="CoarseFineLocation" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
    <uses-feature android:name="android.hardware.camera" android:required="false" />
    <uses-feature android:name="android.hardware.camera.autofocus" android:required="false" />
    <application
        android:name=".Pupil"
@@ -19,7 +32,13 @@
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme"
-        tools:replace="android:theme">
+        android:networkSecurityConfig="@xml/network_security_config"
        tools:replace="android:theme"
        tools:ignore="UnusedAttribute">
        <meta-data
            android:name="com.google.mlkit.vision.DEPENDENCIES"
            android:value="face" />
        <provider
            android:authorities="${applicationId}.provider"
@@ -33,85 +52,139 @@
        </provider>
        <service android:name=".services.DownloadService"
            android:exported="false"
            android:foregroundServiceType="dataSync" />
        <service android:name=".services.TransferClientService"
            android:exported="false"
            android:foregroundServiceType="dataSync" />
        <service android:name=".services.TransferServerService"
            android:exported="false"
            android:foregroundServiceType="dataSync" />
        <receiver
            android:name=".receiver.UpdateBroadcastReceiver"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.DOWNLOAD_COMPLETE" />
            </intent-filter>
        </receiver>
        <activity android:name=".ui.LockActivity" />
        <activity
            android:name=".ui.ReaderActivity"
            android:configChanges="keyboardHidden|orientation|screenSize"
-            android:parentActivityName=".ui.MainActivity">
+            android:parentActivityName=".ui.MainActivity"
-            <intent-filter>
+            android:exported="true">
            <intent-filter android:autoVerify="true">
                <action android:name="android.intent.action.VIEW" />
                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />
-                <data
+                <data android:scheme="http" />
-                    android:host="hitomi.la"
+                <data android:scheme="https" />
-                    android:pathPrefix="/galleries"
+                <data android:host="*.hasha.in"/>
-                    android:scheme="https" />
+                <data android:pathPrefix="/reader"/>
            </intent-filter>
-            <intent-filter>
+            <intent-filter android:autoVerify="true">
                <action android:name="android.intent.action.VIEW" />
                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />
-                <data
+                <data android:scheme="http" />
-                    android:host="hiyobi.me"
+                <data android:scheme="https" />
-                    android:pathPrefix="/reader"
+                <data android:host="hitomi.la"/>
-                    android:scheme="https" />
+                <data android:pathPrefix="/galleries"/>
            </intent-filter>
-            <intent-filter>
+            <intent-filter android:autoVerify="true">
                <action android:name="android.intent.action.VIEW" />
                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />
-                <data
+                <data android:scheme="http" />
-                    android:host="e-hentai.org"
+                <data android:scheme="https" />
-                    android:pathPrefix="/g"
+                <data android:host="hitomi.la" />
-                    android:scheme="https" />
+                <data android:pathPrefix="/manga" />
            </intent-filter>
-            <intent-filter>
+            <intent-filter android:autoVerify="true">
                <action android:name="android.intent.action.VIEW" />
                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />
-                <data
+                <data android:scheme="http" />
-                    android:host="hitomi.la"
+                <data android:scheme="https" />
-                    android:pathPrefix="/galleries"
+                <data android:host="hitomi.la" />
-                    android:scheme="http" />
+                <data android:pathPrefix="/doujinshi" />
            </intent-filter>
-            <intent-filter>
+            <intent-filter android:autoVerify="true">
                <action android:name="android.intent.action.VIEW" />
                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />
-                <data
+                <data android:scheme="http" />
-                    android:host="hiyobi.me"
+                <data android:scheme="https" />
-                    android:scheme="http"
+                <data android:host="hitomi.la" />
-                    android:pathPrefix="/reader" />
+                <data android:pathPrefix="/cg" />
            </intent-filter>
-            <intent-filter>
+            <intent-filter android:autoVerify="true">
                <action android:name="android.intent.action.VIEW" />
                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />
-                <data
+                <data android:scheme="http" />
-                    android:host="e-hentai.org"
+                <data android:scheme="https" />
-                    android:pathPrefix="/g"
+                <data android:host="hitomi.la" />
-                    android:scheme="http" />
+                <data android:pathPrefix="/imageset" />
            </intent-filter>
            <intent-filter android:autoVerify="true">
                <action android:name="android.intent.action.VIEW" />
                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />
                <data android:scheme="http" />
                <data android:scheme="https" />
                <data android:host="hitomi.la" />
                <data android:pathPrefix="/reader" />
            </intent-filter>
            <intent-filter android:autoVerify="true">
                <action android:name="android.intent.action.VIEW" />
                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />
                <data android:scheme="http" />
                <data android:host="e-hentai.org" />
                <data android:pathPrefix="/g" />
            </intent-filter>
            <intent-filter android:autoVerify="true">
                <action android:name="android.intent.action.VIEW" />
                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />
                <data android:scheme="https" />
                <data android:host="e-hentai.org" />
                <data android:pathPrefix="/g" />
            </intent-filter>
        </activity>
        <activity
            android:name=".ui.SettingsActivity"
-            android:label="@string/settings_title" />
+            android:label="@string/settings_title">
        </activity>
        <activity
            android:name=".ui.MainActivity"
            android:configChanges="keyboardHidden|orientation|screenSize"
-            android:theme="@style/NoActionBarAppTheme">
+            android:theme="@style/NoActionBarAppTheme"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <action android:name="android.intent.action.VIEW" />
@@ -120,6 +193,7 @@
            </intent-filter>
        </activity>
        <activity android:name="net.rdrei.android.dirchooser.DirectoryChooserActivity" />
        <activity android:name=".ui.TransferActivity" />
    </application>
 </manifest>
--- a/app/src/main/java/xyz/quaver/pupil/Pupil.kt
+++ b/app/src/main/java/xyz/quaver/pupil/Pupil.kt
@@ -18,48 +18,177 @@
 package xyz.quaver.pupil
 import android.app.Application
 import android.app.Notification
 import android.app.NotificationChannel
 import android.app.NotificationManager
 import android.content.Context
 import android.content.Intent
 import android.net.Uri
 import android.os.Build
 import android.util.Log
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.core.content.ContextCompat
 import androidx.multidex.MultiDexApplication
 import androidx.preference.PreferenceManager
 import com.facebook.imagepipeline.backends.okhttp3.OkHttpImagePipelineConfigFactory
 import com.github.piasy.biv.BigImageViewer
 import com.github.piasy.biv.loader.fresco.FrescoImageLoader
 import com.google.android.gms.common.GooglePlayServicesNotAvailableException
 import com.google.android.gms.common.GooglePlayServicesRepairableException
 import com.google.android.gms.security.ProviderInstaller
-import xyz.quaver.pupil.util.Histories
+import com.google.firebase.FirebaseApp
 import com.google.firebase.crashlytics.FirebaseCrashlytics
 import kotlinx.coroutines.*
 import okhttp3.Dispatcher
 import okhttp3.Interceptor
 import okhttp3.OkHttpClient
 import okhttp3.Response
 import xyz.quaver.io.FileX
 import xyz.quaver.pupil.hitomi.evaluationContext
 import xyz.quaver.pupil.hitomi.readText
 import xyz.quaver.pupil.types.Tag
 import xyz.quaver.pupil.util.*
 import java.io.File
 import java.net.URL
 import java.security.KeyStore
 import java.security.SecureRandom
 import java.security.cert.CertificateFactory
 import java.util.*
 import java.util.concurrent.Executors
 import java.util.concurrent.TimeUnit
 import javax.net.ssl.SSLContext
 import javax.net.ssl.TrustManagerFactory
 import javax.net.ssl.X509TrustManager
 import kotlin.reflect.KClass
-class Pupil : MultiDexApplication() {
+typealias PupilInterceptor = (Interceptor.Chain) -> Response
-    lateinit var histories: Histories
+lateinit var histories: SavedSet<Int>
-    lateinit var favorites: Histories
+    private set
 lateinit var favorites: SavedSet<Int>
    private set
 lateinit var favoriteTags: SavedSet<Tag>
    private set
 lateinit var searchHistory: SavedSet<String>
    private set
-    init {
+val interceptors = mutableMapOf<KClass<out Any>, PupilInterceptor>()
-        AppCompatDelegate.setCompatVectorFromResourcesEnabled(true)
+
 lateinit var clientBuilder: OkHttpClient.Builder
 var clientHolder: OkHttpClient? = null
 val client: OkHttpClient
    get() = clientHolder ?: clientBuilder.build().also {
        clientHolder = it
    }
 fun getSSLContext(context: Context): SSLContext {
    val keyStore = KeyStore.getInstance(KeyStore.getDefaultType())
    keyStore.load(null, null)
    val certificateFactory = CertificateFactory.getInstance("X.509")
    val certificate = context.resources.openRawResource(R.raw.isrgrootx1).use {
        certificateFactory.generateCertificate(it)
    }
    keyStore.setCertificateEntry("isrgrootx1", certificate)
    val defaultTrustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm())
    defaultTrustManagerFactory.init(null as KeyStore?)
    defaultTrustManagerFactory.trustManagers.filterIsInstance(X509TrustManager::class.java).forEach { trustManager ->
        trustManager.acceptedIssuers.forEach { acceptedIssuer ->
            keyStore.setCertificateEntry(acceptedIssuer.subjectDN.name, acceptedIssuer)
        }
    }
    val trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm())
    trustManagerFactory.init(keyStore)
    val sslContext = SSLContext.getInstance("TLS")
    sslContext.init(null, trustManagerFactory.trustManagers, SecureRandom())
    return sslContext
 }
 class Pupil : Application() {
    companion object {
        lateinit var instance: Pupil
            private set
    }
    override fun onCreate() {
-        val preference = PreferenceManager.getDefaultSharedPreferences(this)
+        instance = this
-        histories = Histories(File(ContextCompat.getDataDir(this), "histories.json"))
+        AppCompatDelegate.setCompatVectorFromResourcesEnabled(true)
        favorites = Histories(File(ContextCompat.getDataDir(this), "favorites.json"))
-        val download = try {
+        preferences = PreferenceManager.getDefaultSharedPreferences(this)
-            preference.getString("dl_location", null)
+
        val userID = Preferences["user_id", ""].let {  userID ->
            if (userID.isEmpty()) UUID.randomUUID().toString().also { Preferences["user_id"] = it }
            else userID
        }
        FirebaseApp.initializeApp(this)
        FirebaseCrashlytics.getInstance().setUserId(userID)
        val proxyInfo = getProxyInfo()
        clientBuilder = OkHttpClient.Builder()
 //            .connectTimeout(0, TimeUnit.SECONDS)
            .sslSocketFactory(getSSLContext(this).socketFactory)
            .readTimeout(0, TimeUnit.SECONDS)
            .proxyInfo(proxyInfo)
            .addInterceptor { chain ->
                val request = chain.request().newBuilder()
                    .addHeader("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36")
                    .header("Referer", "https://hitomi.la/")
                    .build()
                val tag = request.tag() ?: return@addInterceptor chain.proceed(request)
                interceptors[tag::class]?.invoke(chain) ?: chain.proceed(request)
            }.apply {
                (Preferences.get<String>("max_concurrent_download").toIntOrNull() ?: 0).let {
                    if (it != 0)
                        dispatcher(Dispatcher(Executors.newFixedThreadPool(it)))
                }
            }
        try {
            Preferences.get<String>("download_folder").also {
                if (it.startsWith("content://"))
                    contentResolver.takePersistableUriPermission(
                        Uri.parse(it),
                        Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION
                    )
                if (!FileX(this, it).canWrite())
                    throw Exception()
            }
        } catch (e: Exception) {
-            preference.edit().remove("dl_location").apply()
+            Preferences.remove("download_folder")
        }
-        if (download == null) {
+        if (!Preferences["reset_secure", false]) {
-            val default = ContextCompat.getExternalFilesDirs(this, null)[0]
+            Preferences["security_mode"] = false
-            preference.edit().putString("dl_location", Uri.fromFile(default).toString()).apply()
+            Preferences["reset_secure"] = true
        }
        histories = SavedSet(File(ContextCompat.getDataDir(this), "histories.json"), 0)
        favorites = SavedSet(File(ContextCompat.getDataDir(this), "favorites.json"), 0)
        favoriteTags = SavedSet(File(ContextCompat.getDataDir(this), "favorites_tags.json"), Tag.parse(""))
        searchHistory = SavedSet(File(ContextCompat.getDataDir(this), "search_histories.json"), "")
        favoriteTags.filter { it.tag.contains('_') }.forEach {
            favoriteTags.remove(it)
        }
        /*
        if (BuildConfig.DEBUG)
            FirebaseAnalytics.getInstance(this).setAnalyticsCollectionEnabled(false)*/
        try {
            ProviderInstaller.installIfNeeded(this)
        } catch (e: GooglePlayServicesRepairableException) {
@@ -68,19 +197,55 @@ class Pupil : MultiDexApplication() {
            e.printStackTrace()
        }
        BigImageViewer.initialize(
            FrescoImageLoader.with(
                this,
                OkHttpImagePipelineConfigFactory
                    .newBuilder(this, client)
                    .build()
            )
        )
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            val manager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
-            val channel = NotificationChannel("download", getString(R.string.channel_download), NotificationManager.IMPORTANCE_MIN).apply {
+
            manager.createNotificationChannel(NotificationChannel("download", getString(R.string.channel_download), NotificationManager.IMPORTANCE_LOW).apply {
                description = getString(R.string.channel_download_description)
                enableLights(false)
                enableVibration(false)
                lockscreenVisibility = Notification.VISIBILITY_SECRET
-            }
+            })
-            manager.createNotificationChannel(channel)
+
            manager.createNotificationChannel(NotificationChannel("downloader", getString(R.string.channel_downloader), NotificationManager.IMPORTANCE_LOW).apply {
                description = getString(R.string.channel_downloader_description)
                enableLights(false)
                enableVibration(false)
                lockscreenVisibility = Notification.VISIBILITY_SECRET
            })
            manager.createNotificationChannel(NotificationChannel("update", getString(R.string.channel_update), NotificationManager.IMPORTANCE_HIGH).apply {
                description = getString(R.string.channel_update_description)
                enableLights(true)
                enableVibration(true)
                lockscreenVisibility = Notification.VISIBILITY_SECRET
            })
            manager.createNotificationChannel(NotificationChannel("import", getString(R.string.channel_update), NotificationManager.IMPORTANCE_LOW).apply {
                description = getString(R.string.channel_update_description)
                enableLights(false)
                enableVibration(false)
                lockscreenVisibility = Notification.VISIBILITY_SECRET
            })
            manager.createNotificationChannel(NotificationChannel("transfer", getString(R.string.channel_transfer), NotificationManager.IMPORTANCE_LOW).apply {
                description = getString(R.string.channel_transfer_description)
                enableLights(false)
                enableVibration(false)
                lockscreenVisibility = Notification.VISIBILITY_SECRET
            })
        }
-        AppCompatDelegate.setCompatVectorFromResourcesEnabled(true)
+        AppCompatDelegate.setDefaultNightMode(when (Preferences.get<Boolean>("dark_mode")) {
        AppCompatDelegate.setDefaultNightMode(when (preference.getBoolean("dark_mode", false)) {
            true -> AppCompatDelegate.MODE_NIGHT_YES
            false -> AppCompatDelegate.MODE_NIGHT_NO
        })
--- a/app/src/main/java/xyz/quaver/pupil/adapters/GalleryBlockAdapter.kt
+++ b/app/src/main/java/xyz/quaver/pupil/adapters/GalleryBlockAdapter.kt
@@ -18,103 +18,97 @@
 package xyz.quaver.pupil.adapters
 import android.content.ClipData
 import android.content.ClipboardManager
 import android.content.Context
 import android.graphics.drawable.Drawable
 import android.util.Base64
 import android.util.SparseBooleanArray
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import android.widget.LinearLayout
+import android.widget.Toast
 import androidx.cardview.widget.CardView
 import androidx.core.content.ContextCompat
 import androidx.recyclerview.widget.RecyclerView
 import androidx.swiperefreshlayout.widget.CircularProgressDrawable
 import androidx.vectordrawable.graphics.drawable.Animatable2Compat
 import androidx.vectordrawable.graphics.drawable.AnimatedVectorDrawableCompat
 import com.bumptech.glide.Glide
 import com.bumptech.glide.load.engine.DiskCacheStrategy
 import com.daimajia.swipe.SwipeLayout
 import com.daimajia.swipe.adapters.RecyclerSwipeAdapter
 import com.daimajia.swipe.interfaces.SwipeAdapterInterface
-import com.google.android.material.chip.Chip
+import com.github.piasy.biv.loader.ImageLoader
-import kotlinx.android.synthetic.main.item_galleryblock.view.*
+import kotlinx.coroutines.*
-import kotlinx.coroutines.CoroutineScope
+import xyz.quaver.io.util.getChild
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import xyz.quaver.hitomi.GalleryBlock
 import xyz.quaver.pupil.BuildConfig
 import xyz.quaver.pupil.Pupil
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.databinding.GalleryblockItemBinding
 import xyz.quaver.pupil.favoriteTags
 import xyz.quaver.pupil.favorites
 import xyz.quaver.pupil.hitomi.getGallery
 import xyz.quaver.pupil.hitomi.getGalleryInfo
 import xyz.quaver.pupil.types.Tag
-import xyz.quaver.pupil.util.Histories
+import xyz.quaver.pupil.ui.view.ProgressCard
-import xyz.quaver.pupil.util.download.Cache
+import xyz.quaver.pupil.util.Preferences
-import xyz.quaver.pupil.util.download.DownloadWorker
+import xyz.quaver.pupil.util.downloader.Cache
 import xyz.quaver.pupil.util.downloader.DownloadManager
 import xyz.quaver.pupil.util.wordCapitalize
-import java.util.*
+import java.io.File
 import kotlin.collections.ArrayList
 import kotlin.concurrent.schedule
-class GalleryBlockAdapter(context: Context, private val galleries: List<GalleryBlock>) : RecyclerSwipeAdapter<RecyclerView.ViewHolder>(), SwipeAdapterInterface {
+class GalleryBlockAdapter(private val galleries: List<Int>) : RecyclerSwipeAdapter<RecyclerView.ViewHolder>(), SwipeAdapterInterface {
-    enum class ViewType {
+    var updateAll = true
-        NEXT,
+    var thin: Boolean = Preferences["thin"]
-        GALLERY,
+
-        PREV
+    inner class GalleryViewHolder(val binding: GalleryblockItemBinding) : RecyclerView.ViewHolder(binding.root) {
        private var galleryID: Int = 0
        init {
            CoroutineScope(Dispatchers.Main).launch {
                while (updateAll) {
                    updateProgress(itemView.context)
                    delay(1000)
                }
            }
        }
-    private val glide = Glide.with(context)
+        private fun updateProgress(context: Context) = CoroutineScope(Dispatchers.Main).launch {
-    private lateinit var favorites: Histories
+            with(binding.galleryblockCard) {
                val imageList = Cache.getInstance(context, galleryID).metadata.imageList
-    val timer = Timer()
+                if (imageList == null) {
-
+                    max = 0
-    inner class GalleryViewHolder(val view: View) : RecyclerView.ViewHolder(view) {
+                    return@with
        var timerTask: TimerTask? = null
        fun updateProgress(context: Context, galleryID: Int) = CoroutineScope(Dispatchers.Main).launch {
            val cache = Cache(context).getCachedGallery(galleryID)
            val reader = Cache(context).getReaderOrNull(galleryID)
            if (reader == null) {
                view.galleryblock_progressbar.visibility = View.GONE
                view.galleryblock_progress_complete.visibility = View.GONE
                return@launch
                }
-            with(view.galleryblock_progressbar) {
+                progress = imageList.count { it != null }
                max = imageList.size
-                progress = cache?.listFiles()?.count { file ->
+                this@GalleryViewHolder.binding.galleryblockId.setOnClickListener {
-                    Regex("^[0-9]+.+\$").matches(file.name!!)
+                    (context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager).setPrimaryClip(
-                } ?: 0
+                        ClipData.newPlainText("gallery_id", galleryID.toString())
-
+                    )
-                if (visibility == View.GONE) {
+                    Toast.makeText(context, R.string.copied_to_clipboard, Toast.LENGTH_SHORT).show()
                    visibility = View.VISIBLE
                    max = reader.galleryInfo.size
                }
-                if (progress == max) {
+                type = if (!imageList.contains(null)) {
-                    if (completeFlag.get(galleryID, false)) {
+                    val downloadManager = DownloadManager.getInstance(context)
-                        with(view.galleryblock_progress_complete) {
+
-                            setImageResource(R.drawable.ic_progressbar)
+                    if (downloadManager.getDownloadFolder(galleryID) == null)
-                            visibility = View.VISIBLE
+                        ProgressCard.Type.CACHE
-                        }
+                    else
-                    } else {
+                        ProgressCard.Type.DOWNLOAD
                        with(view.galleryblock_progress_complete) {
                            setImageDrawable(AnimatedVectorDrawableCompat.create(context, R.drawable.ic_progressbar_complete).apply {
                                this?.start()
                            })
                            visibility = View.VISIBLE
                        }
                        completeFlag.put(galleryID, true)
                    }
                } else
-                    view.galleryblock_progress_complete.visibility = View.INVISIBLE
+                    ProgressCard.Type.LOADING
            }
        }
-        fun bind(galleryBlock: GalleryBlock) {
+        fun bind(galleryID: Int) {
-            with(view) {
+            this.galleryID = galleryID
-                val resources = context.resources
+            updateProgress(itemView.context)
            val cache = Cache.getInstance(itemView.context, galleryID)
            CoroutineScope(Dispatchers.IO).launch {
                val galleryBlock = cache.getGalleryBlock() ?: return@launch
                launch(Dispatchers.Main) {
                    val resources = itemView.context.resources
                    val languages = resources.getStringArray(R.array.languages).map {
                        it.split("|").let { split ->
                            Pair(split[0], split[1])
@@ -124,62 +118,60 @@ class GalleryBlockAdapter(context: Context, private val galleries: List<GalleryB
                    val artists = galleryBlock.artists
                    val series = galleryBlock.series
-                galleryblock_thumbnail.setImageDrawable(CircularProgressDrawable(context).also {
+                    binding.galleryblockThumbnail.apply {
-                    it.start()
+                        setOnClickListener {
                            itemView.performClick()
                        }
                        setOnLongClickListener {
                            itemView.performLongClick()
                        }
                        setFailureImage(ContextCompat.getDrawable(context, R.drawable.image_broken_variant))
                        setImageLoaderCallback(object: ImageLoader.Callback {
                            override fun onFail(error: Exception?) {
                                Cache.delete(context, galleryID)
                            }
                            override fun onCacheHit(imageType: Int, image: File?) {}
                            override fun onCacheMiss(imageType: Int, image: File?) {}
                            override fun onFinish() {}
                            override fun onProgress(progress: Int) {}
                            override fun onStart() {}
                            override fun onSuccess(image: File?) {}
                        })
-
+                        ssiv?.recycle()
-                CoroutineScope(Dispatchers.Main).launch {
+                        CoroutineScope(Dispatchers.IO).launch {
-                    val thumbnail = Cache(context).getThumbnail(galleryBlock.id).let {
+                            cache.getThumbnail().let { launch(Dispatchers.Main) {
-                        if (it != null)
+                                showImage(it)
-                            Base64.decode(it, Base64.DEFAULT)
+                            } }
-                        else
+                        }
                            null
                    }
-                    glide
+                    binding.galleryblockTitle.text = galleryBlock.title
-                        .load(thumbnail)
+                    with(binding.galleryblockArtist) {
-                        .skipMemoryCache(true)
+                        text = artists.joinToString { it.wordCapitalize() }
                        .diskCacheStrategy(DiskCacheStrategy.NONE)
                        .error(R.drawable.image_broken_variant)
                        .apply {
                            if (BuildConfig.CENSOR)
                                override(5, 8)
                        }
                        .into(galleryblock_thumbnail)
                }
                //Check cache
                val cache = Cache(context).getCachedGallery(galleryBlock.id)
                val reader = Cache(context).getReaderOrNull(galleryBlock.id)
                if (cache != null && reader != null) {
                    val count = cache.listFiles().count {
                        Regex("^[0-9]+.+\$").matches(it.name!!)
                    }
                    with(galleryblock_progressbar) {
                        max = reader.galleryInfo.size
                        progress = count
                        visibility = View.VISIBLE
                    }
                } else
                    galleryblock_progressbar.visibility = View.GONE
                if (timerTask == null)
                    timerTask = timer.schedule(0, 1000) {
                        updateProgress(context, galleryBlock.id)
                    }
                galleryblock_title.text = galleryBlock.title
                with(galleryblock_artist) {
                    text = artists.joinToString(", ") { it.wordCapitalize() }
                        visibility = when {
                            artists.isNotEmpty() -> View.VISIBLE
                            else -> View.GONE
                        }
                        CoroutineScope(Dispatchers.IO).launch {
                            val gallery = runCatching {
                                getGallery(galleryID)
                            }.getOrNull()
                            if (gallery?.groups?.isNotEmpty() != true)
                                return@launch
                            launch(Dispatchers.Main) {
                                text = context.getString(
                                    R.string.galleryblock_artist_with_group,
                                    artists.joinToString { it.wordCapitalize() },
                                    gallery.groups.joinToString { it.wordCapitalize() }
                                )
                            }
-                with(galleryblock_series) {
+                        }
                    }
                    with(binding.galleryblockSeries) {
                        text =
                            resources.getString(
                                R.string.galleryblock_series,
@@ -189,54 +181,61 @@ class GalleryBlockAdapter(context: Context, private val galleries: List<GalleryB
                            else -> View.GONE
                        }
                    }
-                galleryblock_type.text = resources.getString(R.string.galleryblock_type, galleryBlock.type).wordCapitalize()
+                    binding.galleryblockType.text = resources.getString(R.string.galleryblock_type, galleryBlock.type).wordCapitalize()
-                with(galleryblock_language) {
+                    with(binding.galleryblockLanguage) {
                        text =
                            resources.getString(R.string.galleryblock_language, languages[galleryBlock.language])
                        visibility = when {
-                        galleryBlock.language.isNotEmpty() -> View.VISIBLE
+                            !galleryBlock.language.isNullOrEmpty() -> View.VISIBLE
                            else -> View.GONE
                        }
                    }
-                galleryblock_tag_group.removeAllViews()
+                    with(binding.galleryblockTagGroup) {
-                galleryBlock.relatedTags.forEach {
+                        onClickListener = {
-                    galleryblock_tag_group.addView(Chip(context).apply {
+                            onChipClickedHandler.forEach { callback ->
-                        val tag = Tag.parse(it).let {  tag ->
+                                callback.invoke(it)
                            when {
                                tag.area != null -> tag
                                else -> Tag("tag", it)
                            }
                        }
-                        chipIcon = when(tag.area) {
+                        tags.clear()
-                            "male" -> {
+
-                                setChipBackgroundColorResource(R.color.material_blue_700)
+                        CoroutineScope(Dispatchers.IO).launch {
-                                setTextColor(ContextCompat.getColor(context, android.R.color.white))
+                            tags.addAll(
-                                ContextCompat.getDrawable(context, R.drawable.ic_gender_male_white)
+                                galleryBlock.relatedTags.sortedBy {
                                    val tag = Tag.parse(it)
                                    if (favoriteTags.contains(tag))
                                        -1
                                    else
                                        when(Tag.parse(it).area) {
                                            "female" -> 0
                                            "male" -> 1
                                            else -> 2
                                        }
-                            "female" -> {
+                                }.map {
-                                setChipBackgroundColorResource(R.color.material_pink_600)
+                                    Tag.parse(it)
                                setTextColor(ContextCompat.getColor(context, android.R.color.white))
                                ContextCompat.getDrawable(context, R.drawable.ic_gender_female_white)
                                }
-                            else -> null
+                            )
                            launch(Dispatchers.Main) {
                                refresh()
                            }
                        text = tag.tag.wordCapitalize()
                        setEnsureMinTouchTargetSize(false)
                        setOnClickListener {
                            for (callback in onChipClickedHandler)
                                callback.invoke(tag)
                        }
                    })
                    }
-                galleryblock_id.text = galleryBlock.id.toString()
+                    binding.galleryblockId.text = galleryBlock.id.toString()
                    binding.galleryblockPagecount.text = "-"
                    CoroutineScope(Dispatchers.IO).launch {
                        val pageCount = kotlin.runCatching {
                            getGalleryInfo(galleryBlock.id).files.size
                        }.getOrNull() ?: return@launch
                        withContext(Dispatchers.Main) {
                            binding.galleryblockPagecount.text = itemView.context.getString(R.string.galleryblock_pagecount, pageCount)
                        }
                    }
-                if (!::favorites.isInitialized)
+                    with(binding.galleryblockFavorite) {
                    favorites = (context.applicationContext as Pupil).favorites
                with(galleryblock_favorite) {
                        setImageResource(if (favorites.contains(galleryBlock.id)) R.drawable.ic_star_filled else R.drawable.ic_star_empty)
                        setOnClickListener {
                            when {
@@ -262,87 +261,51 @@ class GalleryBlockAdapter(context: Context, private val galleries: List<GalleryB
                            }
                        }
                    }
            }
        }
    }
    class NextViewHolder(view: LinearLayout) : RecyclerView.ViewHolder(view)
    class PrevViewHolder(view: LinearLayout) : RecyclerView.ViewHolder(view)
-    class ViewHolderFactory {
+
        companion object {
            fun getLayoutID(type: Int): Int {
                return when(ViewType.values()[type]) {
                    ViewType.NEXT -> R.layout.item_next
                    ViewType.PREV -> R.layout.item_prev
                    ViewType.GALLERY -> R.layout.item_galleryblock
                }
            }
                }
            }
-    val completeFlag = SparseBooleanArray()
+            // Make some views invisible to make it thinner
            if (thin) {
                binding.galleryblockTagGroup.visibility = View.GONE
            }
        }
    }
    val onChipClickedHandler = ArrayList<((Tag) -> Unit)>()
    var onDownloadClickedHandler: ((Int) -> Unit)? = null
    var onDeleteClickedHandler: ((Int) -> Unit)? = null
    var showNext = false
    var showPrev = false
    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
-
+        return GalleryViewHolder(GalleryblockItemBinding.inflate(LayoutInflater.from(parent.context), parent, false))
        fun getViewHolder(type: Int, view: View): RecyclerView.ViewHolder {
            return when(ViewType.values()[type]) {
                ViewType.NEXT -> NextViewHolder(view as LinearLayout)
                ViewType.PREV -> PrevViewHolder(view as LinearLayout)
                ViewType.GALLERY -> GalleryViewHolder(view as CardView)
            }
        }
        return getViewHolder(
            viewType,
            LayoutInflater.from(parent.context).inflate(
                ViewHolderFactory.getLayoutID(viewType),
                parent,
                false
            )
        )
    }
    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
        if (holder is GalleryViewHolder) {
-            val gallery = galleries[position-(if (showPrev) 1 else 0)]
+            val galleryID = galleries[position]
-            holder.bind(gallery)
+            holder.bind(galleryID)
-            with(holder.view.galleryblock_primary) {
+            holder.binding.galleryblockCard.binding.download.setOnClickListener {
                setOnClickListener {
                    holder.view.performClick()
                }
                setOnLongClickListener {
                    holder.view.performLongClick()
                }
            }
            holder.view.galleryblock_download.setOnClickListener {
                onDownloadClickedHandler?.invoke(position)
            }
-            holder.view.galleryblock_delete.setOnClickListener {
+            holder.binding.galleryblockCard.binding.delete.setOnClickListener {
                onDeleteClickedHandler?.invoke(position)
            }
-            mItemManger.bindView(holder.view, position)
+            mItemManger.bindView(holder.binding.root, position)
-            holder.view.galleryblock_swipe_layout.addSwipeListener(object: SwipeLayout.SwipeListener {
+            holder.binding.galleryblockCard.binding.swipeLayout.addSwipeListener(object: SwipeLayout.SwipeListener {
                override fun onStartOpen(layout: SwipeLayout?) {
                    mItemManger.closeAllExcept(layout)
-                    holder.view.galleryblock_download.text =
+                    holder.binding.galleryblockCard.binding.download.text =
-                        if (DownloadWorker.getInstance(holder.view.context).progress.indexOfKey(gallery.id) < 0)
+                        if (DownloadManager.getInstance(holder.binding.root.context).isDownloading(galleryID))
-                            holder.view.context.getString(R.string.main_download)
+                            holder.binding.root.context.getString(android.R.string.cancel)
                        else
-                            holder.view.context.getString(android.R.string.cancel)
+                            holder.binding.root.context.getString(R.string.main_download)
                }
                override fun onClose(layout: SwipeLayout?) {}
@@ -354,27 +317,7 @@ class GalleryBlockAdapter(context: Context, private val galleries: List<GalleryB
        }
    }
-    override fun onViewDetachedFromWindow(holder: RecyclerView.ViewHolder) {
+    override fun getItemCount() = galleries.size
        super.onViewDetachedFromWindow(holder)
-        if (holder is GalleryViewHolder) {
+    override fun getSwipeLayoutResourceId(position: Int) = R.id.swipe_layout
            holder.timerTask?.cancel()
            holder.timerTask = null
        }
    }
    override fun getItemCount() =
        (if (galleries.isEmpty()) 0 else galleries.size)+
        (if (showNext) 1 else 0)+
        (if (showPrev) 1 else 0)
    override fun getItemViewType(position: Int): Int {
        return when {
            showPrev && position == 0 -> ViewType.PREV
            showNext && position == galleries.size+(if (showPrev) 1 else 0) -> ViewType.NEXT
            else -> ViewType.GALLERY
        }.ordinal
    }
    override fun getSwipeLayoutResourceId(position: Int) = R.id.galleryblock_swipe_layout
 }
--- a/app/src/main/java/xyz/quaver/pupil/adapters/MirrorAdapter.kt
+++ b/app/src/main/java/xyz/quaver/pupil/adapters/MirrorAdapter.kt
@@ -1,85 +0,0 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.adapters
 import android.content.Context
 import android.view.LayoutInflater
 import android.view.MotionEvent
 import android.view.View
 import android.view.ViewGroup
 import androidx.preference.PreferenceManager
 import androidx.recyclerview.widget.RecyclerView
 import kotlinx.android.synthetic.main.item_mirrors.view.*
 import xyz.quaver.pupil.R
 import java.util.*
 class MirrorAdapter(context: Context) : RecyclerView.Adapter<MirrorAdapter.ViewHolder>() {
    class ViewHolder(val view: View) : RecyclerView.ViewHolder(view)
    val mirrors = context.resources.getStringArray(R.array.mirrors).map {
        it.split('|').let { split ->
            Pair(split.first(), split.last())
        }
    }.toMap()
    val list = mirrors.keys.toMutableList().apply {
        PreferenceManager.getDefaultSharedPreferences(context)
            .getString("mirrors", "")!!
            .split(">")
            .reversed()
            .forEach {
                if (this.contains(it)) {
                    this.remove(it)
                    this.add(0, it)
                }
            }
    }
    val onItemMove : ((Int, Int) -> Unit) = { from, to ->
        Collections.swap(list, from, to)
        notifyItemMoved(from, to)
        onItemMoved?.invoke(list)
    }
    var onStartDrag : ((ViewHolder) -> Unit)? = null
    var onItemMoved : ((List<String>) -> (Unit))? = null
    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        with(holder.view) {
            mirror_name.text = mirrors[list.elementAt(position)]
            mirror_button.setOnTouchListener { _, event ->
                if (event.action == MotionEvent.ACTION_DOWN)
                    onStartDrag?.invoke(holder)
                true
            }
        }
    }
    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
        return LayoutInflater.from(parent.context).inflate(
            R.layout.item_mirrors, parent, false
        ).let {
            ViewHolder(it)
        }
    }
    override fun getItemCount() = mirrors.size
 }
--- a/app/src/main/java/xyz/quaver/pupil/adapters/ReaderAdapter.kt
+++ b/app/src/main/java/xyz/quaver/pupil/adapters/ReaderAdapter.kt
@@ -19,124 +19,232 @@
 package xyz.quaver.pupil.adapters
 import android.content.Context
 import android.graphics.drawable.Animatable
 import android.net.Uri
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.ImageView
 import androidx.constraintlayout.widget.ConstraintLayout
 import androidx.core.content.ContextCompat
 import androidx.core.view.updateLayoutParams
 import androidx.recyclerview.widget.RecyclerView
-import com.bumptech.glide.Glide
+import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
-import com.bumptech.glide.load.engine.DiskCacheStrategy
+import com.facebook.drawee.backends.pipeline.Fresco
-import com.crashlytics.android.Crashlytics
+import com.facebook.drawee.controller.BaseControllerListener
-import io.fabric.sdk.android.Fabric
+import com.facebook.drawee.drawable.ScalingUtils
-import kotlinx.android.synthetic.main.item_reader.view.*
+import com.facebook.drawee.interfaces.DraweeController
-import kotlinx.coroutines.CoroutineScope
+import com.facebook.drawee.view.SimpleDraweeView
-import kotlinx.coroutines.Dispatchers
+import com.facebook.imagepipeline.image.ImageInfo
-import kotlinx.coroutines.launch
+import com.github.piasy.biv.view.BigImageView
-import xyz.quaver.hitomi.Reader
+import com.github.piasy.biv.view.ImageShownCallback
-import xyz.quaver.pupil.BuildConfig
+import com.github.piasy.biv.view.ImageViewFactory
 import kotlinx.coroutines.*
 import xyz.quaver.pupil.R
-import xyz.quaver.pupil.util.download.Cache
+import xyz.quaver.pupil.databinding.ReaderItemBinding
-import xyz.quaver.pupil.util.download.DownloadWorker
+import xyz.quaver.pupil.hitomi.GalleryInfo
-import java.util.*
+import xyz.quaver.pupil.ui.ReaderActivity
-import kotlin.concurrent.schedule
+import xyz.quaver.pupil.util.downloader.Cache
 import java.io.File
 import kotlin.math.roundToInt
-class ReaderAdapter(private val context: Context,
+class ReaderAdapter(
-                    private val galleryID: Int) : RecyclerView.Adapter<ReaderAdapter.ViewHolder>() {
+    private val activity: ReaderActivity,
    private val galleryID: Int
 ) : RecyclerView.Adapter<ReaderAdapter.ViewHolder>() {
    var galleryInfo: GalleryInfo? = null
    var isFullScreen = false
-    var reader: Reader? = null
+    var onItemClickListener : (() -> (Unit))? = null
    private val glide = Glide.with(context)
    val timer = Timer()
    var onItemClickListener : ((Int) -> (Unit))? = null
    inner class ViewHolder(private val binding: ReaderItemBinding) : RecyclerView.ViewHolder(binding.root) {
        init {
-        CoroutineScope(Dispatchers.IO).launch {
+            with (binding.image) {
-            reader = Cache(context).getReader(galleryID)
+                setImageViewFactory(FrescoImageViewFactory().apply {
-            launch(Dispatchers.Main) {
+                    updateView = { imageInfo ->
-                notifyDataSetChanged()
+                        binding.image.updateLayoutParams<ConstraintLayout.LayoutParams> {
                            dimensionRatio = "${imageInfo.width}:${imageInfo.height}"
                        }
                    }
                })
                setImageShownCallback(object : ImageShownCallback {
                    override fun onMainImageShown() {
                        binding.image.mainView.let { v ->
                            when (v) {
                                is SubsamplingScaleImageView ->
                                    if (!isFullScreen) binding.image.layoutParams.height = ViewGroup.LayoutParams.WRAP_CONTENT
                            }
                        }
                    }
-    class ViewHolder(val view: View) : RecyclerView.ViewHolder(view)
+                    override fun onThumbnailShown() {}
                })
-    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+                setFailureImage(ContextCompat.getDrawable(itemView.context, R.drawable.image_broken_variant))
-        return LayoutInflater.from(parent.context).inflate(
+                setOnClickListener {
-            R.layout.item_reader, parent, false
+                    onItemClickListener?.invoke()
        ).let {
            ViewHolder(it)
                }
            }
-    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+            binding.root.setOnClickListener {
-        holder.view as ConstraintLayout
+                onItemClickListener?.invoke()
-
+            }
        if (isFullScreen)
            holder.view.layoutParams.height = RecyclerView.LayoutParams.MATCH_PARENT
        else
            holder.view.layoutParams.height = RecyclerView.LayoutParams.WRAP_CONTENT
        holder.view.image.setOnPhotoTapListener { _, _, _ ->
            onItemClickListener?.invoke(position)
        }
-        holder.view.container.setOnClickListener {
+        fun bind(position: Int) {
-            onItemClickListener?.invoke(position)
+            if (cache == null)
                cache = Cache.getInstance(itemView.context, galleryID)
            if (!isFullScreen) {
                binding.root.setBackgroundResource(R.drawable.reader_item_boundary)
                binding.image.updateLayoutParams<ConstraintLayout.LayoutParams> {
                    height = 0
                    dimensionRatio =
                        "${galleryInfo!!.files[position].width}:${galleryInfo!!.files[position].height}"
                }
        (holder.view.container.layoutParams as ConstraintLayout.LayoutParams)
            .dimensionRatio = "${reader!!.galleryInfo[position].width}:${reader!!.galleryInfo[position].height}"
        holder.view.reader_index.text = (position+1).toString()
        val images = Cache(context).getImages(galleryID)
        if (images?.get(position) != null) {
            glide
                .load(images[position]?.uri)
                .diskCacheStrategy(DiskCacheStrategy.NONE)
                .skipMemoryCache(true)
                .error(R.drawable.image_broken_variant)
                .apply {
                    if (BuildConfig.CENSOR)
                        override(5, 8)
                }
                .into(holder.view.image)
            } else {
-            val progress = DownloadWorker.getInstance(context).progress[galleryID]?.get(position)
+                binding.root.layoutParams.height = ViewGroup.LayoutParams.MATCH_PARENT
-
+                binding.image.updateLayoutParams<ConstraintLayout.LayoutParams> {
-            if (progress?.isNaN() == true) {
+                    height = ConstraintLayout.LayoutParams.MATCH_PARENT
-
+                    dimensionRatio = null
-                if (Fabric.isInitialized())
+                }
-                    Crashlytics.logException(DownloadWorker.getInstance(context).exception[galleryID]?.get(position))
+                binding.root.background = null
                glide
                    .load(R.drawable.image_broken_variant)
                    .into(holder.view.image)
                return
            }
-            holder.view.reader_item_progressbar.progress =
+            binding.readerIndex.text = (position+1).toString()
            val image = cache!!.getImage(position)
            val progress = activity.downloader?.progress?.get(galleryID)?.get(position)
            if (progress?.isInfinite() == true && image != null) {
                binding.progressGroup.visibility = View.INVISIBLE
                binding.image.showImage(image.uri)
            } else {
                binding.progressGroup.visibility = View.VISIBLE
                binding.readerItemProgressbar.progress =
                    if (progress?.isInfinite() == true)
                        100
                    else
                        progress?.roundToInt() ?: 0
-            holder.view.image.setImageDrawable(null)
+                clear()
            timer.schedule(1000) {
                CoroutineScope(Dispatchers.Main).launch {
                    delay(1000)
                    notifyItemChanged(position)
                }
            }
        }
        fun clear() {
            binding.image.mainView.let {
                when (it) {
                    is SubsamplingScaleImageView ->
                        it.recycle()
                    is SimpleDraweeView ->
                        it.controller = null
                }
            }
        }
    }
-    override fun getItemCount() = reader?.galleryInfo?.size ?: 0
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
        return ViewHolder(ReaderItemBinding.inflate(LayoutInflater.from(parent.context), parent, false))
    }
    private var cache: Cache? = null
    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        holder.bind(position)
    }
    override fun getItemCount() = galleryInfo?.files?.size ?: 0
    override fun onViewRecycled(holder: ViewHolder) {
        holder.clear()
    }
 }
 class FrescoImageViewFactory : ImageViewFactory() {
    var updateView: ((ImageInfo) -> Unit)? = null
    override fun createAnimatedImageView(
        context: Context, imageType: Int,
        initScaleType: Int
    ): View {
        val view = SimpleDraweeView(context)
        view.hierarchy.actualImageScaleType = scaleType(initScaleType)
        return view
    }
    override fun loadAnimatedContent(
        view: View, imageType: Int,
        imageFile: File
    ) {
        if (view is SimpleDraweeView) {
            val controller: DraweeController = Fresco.newDraweeControllerBuilder()
                .setUri(Uri.parse("file://" + imageFile.absolutePath))
                .setAutoPlayAnimations(true)
                .setControllerListener(object: BaseControllerListener<ImageInfo>() {
                    override fun onIntermediateImageSet(id: String?, imageInfo: ImageInfo?) {
                        imageInfo?.let { updateView?.invoke(it) }
                    }
                    override fun onFinalImageSet(id: String?, imageInfo: ImageInfo?, animatable: Animatable?) {
                        imageInfo?.let { updateView?.invoke(it) }
                    }
                })
                .build()
            view.controller = controller
        }
    }
    override fun createThumbnailView(
        context: Context,
        scaleType: ImageView.ScaleType, willLoadFromNetwork: Boolean
    ): View {
        return if (willLoadFromNetwork) {
            val thumbnailView = SimpleDraweeView(context)
            thumbnailView.hierarchy.actualImageScaleType = scaleType(scaleType)
            thumbnailView
        } else {
            super.createThumbnailView(context, scaleType, false)
        }
    }
    override fun loadThumbnailContent(view: View, thumbnail: Uri) {
        if (view is SimpleDraweeView) {
            val controller: DraweeController = Fresco.newDraweeControllerBuilder()
                .setUri(thumbnail)
                .build()
            view.controller = controller
        }
    }
    private fun scaleType(value: Int): ScalingUtils.ScaleType {
        return when (value) {
            BigImageView.INIT_SCALE_TYPE_CENTER -> ScalingUtils.ScaleType.CENTER
            BigImageView.INIT_SCALE_TYPE_CENTER_CROP -> ScalingUtils.ScaleType.CENTER_CROP
            BigImageView.INIT_SCALE_TYPE_CENTER_INSIDE -> ScalingUtils.ScaleType.CENTER_INSIDE
            BigImageView.INIT_SCALE_TYPE_FIT_END -> ScalingUtils.ScaleType.FIT_END
            BigImageView.INIT_SCALE_TYPE_FIT_START -> ScalingUtils.ScaleType.FIT_START
            BigImageView.INIT_SCALE_TYPE_FIT_XY -> ScalingUtils.ScaleType.FIT_XY
            BigImageView.INIT_SCALE_TYPE_FIT_CENTER -> ScalingUtils.ScaleType.FIT_CENTER
            else -> ScalingUtils.ScaleType.FIT_CENTER
        }
    }
    private fun scaleType(scaleType: ImageView.ScaleType): ScalingUtils.ScaleType {
        return when (scaleType) {
            ImageView.ScaleType.CENTER -> ScalingUtils.ScaleType.CENTER
            ImageView.ScaleType.CENTER_CROP -> ScalingUtils.ScaleType.CENTER_CROP
            ImageView.ScaleType.CENTER_INSIDE -> ScalingUtils.ScaleType.CENTER_INSIDE
            ImageView.ScaleType.FIT_END -> ScalingUtils.ScaleType.FIT_END
            ImageView.ScaleType.FIT_START -> ScalingUtils.ScaleType.FIT_START
            ImageView.ScaleType.FIT_XY -> ScalingUtils.ScaleType.FIT_XY
            ImageView.ScaleType.FIT_CENTER -> ScalingUtils.ScaleType.FIT_CENTER
            else -> ScalingUtils.ScaleType.FIT_CENTER
        }
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/adapters/ThumbnailAdapter.kt
+++ b/app/src/main/java/xyz/quaver/pupil/adapters/ThumbnailAdapter.kt
@@ -18,30 +18,35 @@
 package xyz.quaver.pupil.adapters
 import android.net.Uri
 import android.view.ViewGroup
-import android.widget.ImageView
+import androidx.core.content.ContextCompat
 import androidx.recyclerview.widget.RecyclerView
-import com.bumptech.glide.RequestManager
+import com.github.piasy.biv.view.BigImageView
-import xyz.quaver.pupil.BuildConfig
+import xyz.quaver.pupil.R
-class ThumbnailAdapter(private val glide: RequestManager, private val thumbnails: List<String>) : RecyclerView.Adapter<ThumbnailAdapter.ViewHolder>() {
+class ThumbnailAdapter(var thumbnails: List<String>) : RecyclerView.Adapter<ThumbnailAdapter.ViewHolder>() {
-    class ViewHolder(val view: ImageView) : RecyclerView.ViewHolder(view)
+    class ViewHolder(val view: BigImageView) : RecyclerView.ViewHolder(view) {
        fun clear() {
            view.ssiv?.recycle()
        }
    }
    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
-        return ViewHolder(ImageView(parent.context))
+        return ViewHolder(BigImageView(parent.context).apply {
            setFailureImage(ContextCompat.getDrawable(context, R.drawable.image_broken_variant))
        })
    }
    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
-        glide
+        holder.view.showImage(Uri.parse(thumbnails[position]))
            .load(thumbnails[position])
            .apply {
                if (BuildConfig.CENSOR)
                    override(5, 8)
            }
            .into(holder.view)
    }
    override fun getItemCount() = thumbnails.size
    override fun onViewRecycled(holder: ViewHolder) {
        holder.clear()
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/adapters/ThumbnailPageAdapter.kt
+++ b/app/src/main/java/xyz/quaver/pupil/adapters/ThumbnailPageAdapter.kt
@@ -0,0 +1,52 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.adapters
 import android.view.ViewGroup
 import androidx.recyclerview.widget.GridLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import kotlin.math.min
 class ThumbnailPageAdapter(private val thumbnails: List<String>) : RecyclerView.Adapter<ThumbnailPageAdapter.ViewHolder>() {
    class ViewHolder(val view: RecyclerView) : RecyclerView.ViewHolder(view)
    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
        return ViewHolder(RecyclerView(parent.context).apply {
            val layoutManager = GridLayoutManager(parent.context, 3)
            val adapter = ThumbnailAdapter(listOf())
            this.layoutManager = layoutManager
            this.adapter = adapter
            layoutParams = ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)
        })
    }
    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        (holder.view.adapter as ThumbnailAdapter).apply {
            thumbnails = this@ThumbnailPageAdapter.thumbnails.slice(9*position until min(9*position+9, this@ThumbnailPageAdapter.thumbnails.size))
            notifyDataSetChanged()
            (holder.view.layoutManager as GridLayoutManager).scrollToPosition(8)
        }
    }
    override fun getItemCount() = if (thumbnails.isEmpty()) 0 else thumbnails.size/9 + if (thumbnails.size%9 != 0) 1 else 0
 }
--- a/app/src/main/java/xyz/quaver/pupil/adapters/TransferPeersAdapter.kt
+++ b/app/src/main/java/xyz/quaver/pupil/adapters/TransferPeersAdapter.kt
@@ -0,0 +1,44 @@
 package xyz.quaver.pupil.adapters
 import android.net.wifi.p2p.WifiP2pDevice
 import android.net.wifi.p2p.WifiP2pDeviceList
 import android.util.Log
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.BaseAdapter
 import androidx.recyclerview.widget.RecyclerView
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.databinding.TransferPeerListItemBinding
 class TransferPeersAdapter(
    private val devices: Collection<WifiP2pDevice>,
    private val onDeviceSelected: (WifiP2pDevice) -> Unit
 ): RecyclerView.Adapter<TransferPeersAdapter.ViewHolder>() {
    class ViewHolder(val binding: TransferPeerListItemBinding): RecyclerView.ViewHolder(binding.root)
    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
        val binding = TransferPeerListItemBinding.inflate(
            LayoutInflater.from(parent.context),
            parent,
            false
        )
        return ViewHolder(binding)
    }
    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        val device = devices.elementAt(position)
        holder.binding.deviceName.text = device.deviceName
        holder.binding.deviceAddress.text = device.deviceAddress
        holder.binding.root.setOnClickListener {
            onDeviceSelected(device)
        }
    }
    override fun getItemCount(): Int {
        return devices.size
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/hitomi/common.kt
+++ b/app/src/main/java/xyz/quaver/pupil/hitomi/common.kt
@@ -0,0 +1,273 @@
 /*
 *    Copyright 2019 tom5079
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */
 package xyz.quaver.pupil.hitomi
 import kotlinx.coroutines.*
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 import kotlinx.datetime.Clock.System.now
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.decodeFromString
 import kotlinx.serialization.json.Json
 import okhttp3.Call
 import okhttp3.Callback
 import okhttp3.Request
 import okhttp3.Response
 import xyz.quaver.pupil.client
 import java.io.IOException
 import java.net.URL
 import java.util.concurrent.Executors
 import kotlin.coroutines.resumeWithException
 import kotlin.time.Duration.Companion.minutes
 import kotlin.time.ExperimentalTime
 const val protocol = "https:"
@Serializable
 data class Artist(
    val artist: String,
    val url: String
 )
@Serializable
 data class Group(
    val group: String,
    val url: String
 )
@Serializable
 data class Parody(
    val parody: String,
    val url: String
 )
@Serializable
 data class Character(
    val character: String,
    val url: String
 )
@Serializable
 data class Tag(
    val tag: String,
    val url: String,
    val female: String? = null,
    val male: String? = null
 )
@Serializable
 data class Language(
    val galleryid: String,
    val url: String,
    val language_localname: String,
    val name: String
 )
@Serializable
 data class GalleryInfo(
    val id: String,
    val title: String,
    val japanese_title: String? = null,
    val language: String? = null,
    val type: String,
    val date: String,
    val artists: List<Artist>? = null,
    val groups: List<Group>? = null,
    val parodys: List<Parody>? = null,
    val tags: List<Tag>? = null,
    val related: List<Int> = emptyList(),
    val languages: List<Language> = emptyList(),
    val characters: List<Character>? = null,
    val scene_indexes: List<Int>? = emptyList(),
    val files: List<GalleryFiles> = emptyList()
 )
 val json = Json {
    isLenient = true
    ignoreUnknownKeys = true
    allowSpecialFloatingPointValues = true
    useArrayPolymorphism = true
 }
 typealias HeaderSetter = (Request.Builder) -> Request.Builder
 fun URL.readText(settings: HeaderSetter? = null): String {
    val request = Request.Builder()
        .url(this).let {
            settings?.invoke(it) ?: it
        }.build()
    return client.newCall(request).execute().also{ if (it.code() != 200) throw IOException("CODE ${it.code()}") }.body()?.use { it.string() } ?: throw IOException()
 }
 fun URL.readBytes(settings: HeaderSetter? = null): ByteArray {
    val request = Request.Builder()
        .url(this).let {
            settings?.invoke(it) ?: it
        }.build()
    return client.newCall(request).execute().also { if (it.code() != 200) throw IOException("CODE ${it.code()}") }.body()?.use { it.bytes() } ?: throw IOException()
 }
@Suppress("EXPERIMENTAL_API_USAGE")
 fun getGalleryInfo(galleryID: Int) =
    json.decodeFromString<GalleryInfo>(
        URL("$protocol//$domain/galleries/$galleryID.js").readText()
            .replace("var galleryinfo = ", "")
    )
 //common.js
 const val domain = "ltn.hitomi.la"
 const val galleryblockextension = ".html"
 const val galleryblockdir = "galleryblock"
 const val nozomiextension = ".nozomi"
 val evaluationContext = Dispatchers.Main + Job()
 object gg {
    private var lastRetrieval: Long? = null
    private val mutex = Mutex()
    private var mDefault = 0
    private val mMap = mutableMapOf<Int, Int>()
    private var b = ""
    @OptIn(ExperimentalTime::class, ExperimentalCoroutinesApi::class)
    private suspend fun refresh() = withContext(Dispatchers.IO) {
        mutex.withLock {
            if (lastRetrieval == null || (lastRetrieval!! + 60000) < System.currentTimeMillis()) {
                val ggjs: String = suspendCancellableCoroutine { continuation ->
                    val call = client.newCall(Request.Builder().url("https://ltn.hitomi.la/gg.js").build())
                    call.enqueue(object: Callback {
                        override fun onFailure(call: Call, e: IOException) {
                            if (continuation.isCancelled) return
                            continuation.resumeWithException(e)
                        }
                        override fun onResponse(call: Call, response: Response) {
                            if (!call.isCanceled) {
                                response.body()?.use {
                                    continuation.resume(it.string()) {
                                        call.cancel()
                                    }
                                }
                            }
                        }
                    })
                    continuation.invokeOnCancellation {
                        call.cancel()
                    }
                }
                mDefault = Regex("var o = (\\d)").find(ggjs)!!.groupValues[1].toInt()
                val o = Regex("o = (\\d); break;").find(ggjs)!!.groupValues[1].toInt()
                mMap.clear()
                Regex("case (\\d+):").findAll(ggjs).forEach {
                    val case = it.groupValues[1].toInt()
                    mMap[case] = o
                }
                b = Regex("b: '(.+)'").find(ggjs)!!.groupValues[1]
                lastRetrieval = System.currentTimeMillis()
            }
        }
    }
    suspend fun m(g: Int): Int {
        refresh()
        return mMap[g] ?: mDefault
    }
    suspend fun b(): String {
        refresh()
        return b
    }
    fun s(h: String): String {
        val m = Regex("(..)(.)$").find(h)
        return m!!.groupValues.let { it[2]+it[1] }.toInt(16).toString(10)
    }
 }
 suspend fun subdomainFromURL(url: String, base: String? = null) : String {
    var retval = "b"
    if (!base.isNullOrBlank())
        retval = base
    val b = 16
    val r = Regex("""/[0-9a-f]{61}([0-9a-f]{2})([0-9a-f])""")
    val m = r.find(url) ?: return "a"
    val g = m.groupValues.let { it[2]+it[1] }.toIntOrNull(b)
    if (g != null) {
        retval = (97+ gg.m(g)).toChar().toString() + retval
    }
    return retval
 }
 suspend fun urlFromUrl(url: String, base: String? = null) : String {
    return url.replace(Regex("""//..?\.hitomi\.la/"""), "//${subdomainFromURL(url, base)}.hitomi.la/")
 }
 suspend fun fullPathFromHash(hash: String) : String =
    "${gg.b()}${gg.s(hash)}/$hash"
 fun realFullPathFromHash(hash: String): String =
    hash.replace(Regex("""^.*(..)(.)$"""), "$2/$1/$hash")
 suspend fun urlFromHash(galleryID: Int, image: GalleryFiles, dir: String? = null, ext: String? = null) : String {
    val ext = ext ?: dir ?: image.name.takeLastWhile { it != '.' }
    val dir = dir ?: "images"
    return "https://a.hitomi.la/$dir/${fullPathFromHash(image.hash)}.$ext"
 }
 suspend fun urlFromUrlFromHash(galleryID: Int, image: GalleryFiles, dir: String? = null, ext: String? = null, base: String? = null) =
    if (base == "tn")
        urlFromUrl("https://a.hitomi.la/$dir/${realFullPathFromHash(image.hash)}.$ext", base)
    else
        urlFromUrl(urlFromHash(galleryID, image, dir, ext), base)
 suspend fun rewriteTnPaths(html: String) {
    html.replace(Regex("""//tn\.hitomi\.la/[^/]+/[0-9a-f]/[0-9a-f]{2}/[0-9a-f]{64}""")) { url ->
        runBlocking {
            urlFromUrl(url.value, "tn")
        }
    }
 }
 suspend fun imageUrlFromImage(galleryID: Int, image: GalleryFiles, noWebp: Boolean) : String {
    return urlFromUrlFromHash(galleryID, image, "webp", null, "a")
 //    return when {
 //        noWebp ->
 //            urlFromUrlFromHash(galleryID, image)
 ////        image.hasavif != 0 ->
 ////            urlFromUrlFromHash(galleryID, image, "avif", null, "a")
 //        image.haswebp != 0 ->
 //            urlFromUrlFromHash(galleryID, image, "webp", null, "a")
 //        else ->
 //            urlFromUrlFromHash(galleryID, image)
 //    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/hitomi/galleries.kt
+++ b/app/src/main/java/xyz/quaver/pupil/hitomi/galleries.kt
@@ -0,0 +1,54 @@
 /*
 *    Copyright 2019 tom5079
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */
 package xyz.quaver.pupil.hitomi
 import kotlinx.serialization.Serializable
@Serializable
 data class Gallery(
    val related: List<Int>,
    val langList: List<Pair<String, String>>,
    val cover: String,
    val title: String,
    val artists: List<String>,
    val groups: List<String>,
    val type: String,
    val language: String,
    val series: List<String>,
    val characters: List<String>,
    val tags: List<String>,
    val thumbnails: List<String>
 )
 suspend fun getGallery(galleryID: Int) : Gallery {
    val info = getGalleryInfo(galleryID)
    return Gallery(
        info.related,
        info.languages.map { it.name to it.galleryid },
        urlFromUrlFromHash(galleryID, info.files.first(), "webpbigtn", "webp", "tn"),
        info.title,
        info.artists?.map { it.artist }.orEmpty(),
        info.groups?.map { it.group }.orEmpty(),
        info.type,
        info.language.orEmpty(),
        info.parodys?.map { it.parody }.orEmpty(),
        info.characters?.map { it.character }.orEmpty(),
        info.tags?.map { "${if (it.female.isNullOrEmpty()) "" else "female:"}${if (it.male.isNullOrEmpty()) "" else "male:"}${it.tag}" }.orEmpty(),
        info.files.map { urlFromUrlFromHash(galleryID, it, "webpsmalltn", "webp", "tn") }
    )
 }
--- a/app/src/main/java/xyz/quaver/pupil/hitomi/galleryblock.kt
+++ b/app/src/main/java/xyz/quaver/pupil/hitomi/galleryblock.kt
@@ -0,0 +1,92 @@
 /*
 *    Copyright 2019 tom5079
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */
 package xyz.quaver.pupil.hitomi
 import kotlinx.serialization.Serializable
 import org.jsoup.Jsoup
 import java.net.URL
 import java.net.URLDecoder
 import java.nio.ByteBuffer
 import java.nio.ByteOrder
 import javax.net.ssl.HttpsURLConnection
 import kotlin.io.readText
 //galleryblock.js
 fun fetchNozomi(area: String? = null, tag: String = "index", language: String = "all", start: Int = -1, count: Int = -1) : Pair<List<Int>, Int> {
    val url = when(area) {
        null -> "$protocol//$domain/$tag-$language$nozomiextension"
        else -> "$protocol//$domain/$area/$tag-$language$nozomiextension"
    }
    with(URL(url).openConnection() as HttpsURLConnection) {
        requestMethod = "GET"
        if (start != -1 && count != -1) {
            val startByte = start*4
            val endByte = (start+count)*4-1
            setRequestProperty("Range", "bytes=$startByte-$endByte")
        }
        connect()
        val totalItems = getHeaderField("Content-Range")
            .replace(Regex("^[Bb]ytes \\d+-\\d+/"), "").toInt() / 4
        val nozomi = ArrayList<Int>()
        val arrayBuffer = ByteBuffer
            .wrap(inputStream.readBytes())
            .order(ByteOrder.BIG_ENDIAN)
        while (arrayBuffer.hasRemaining())
            nozomi.add(arrayBuffer.int)
        return Pair(nozomi, totalItems)
    }
 }
@Serializable
 data class GalleryBlock(
    val id: Int,
    val galleryUrl: String,
    val thumbnails: List<String>,
    val title: String,
    val artists: List<String>,
    val series: List<String>,
    val type: String,
    val language: String,
    val relatedTags: List<String>,
    val groups: List<String> = emptyList()
 )
 suspend fun getGalleryBlock(galleryID: Int) : GalleryBlock {
    val info = getGalleryInfo(galleryID)
    return GalleryBlock(
        galleryID,
        "",
        listOf(urlFromUrlFromHash(galleryID, info.files.first(), "webpbigtn", "webp", "tn")),
        info.title,
        info.artists?.map { it.artist }.orEmpty(),
        info.parodys?.map { it.parody }.orEmpty(),
        info.type,
        info.language.orEmpty(),
        info.tags?.map { "${if (it.female.isNullOrEmpty()) "" else "female:"}${if (it.male.isNullOrEmpty()) "" else "male:"}${it.tag}" }.orEmpty(),
        info.groups?.map { it.group }.orEmpty()
    )
 }
--- a/app/src/main/java/xyz/quaver/pupil/hitomi/reader.kt
+++ b/app/src/main/java/xyz/quaver/pupil/hitomi/reader.kt
@@ -14,31 +14,25 @@
 *    limitations under the License.
 */
-package xyz.quaver.hitomi
+package xyz.quaver.pupil.hitomi
 import kotlinx.serialization.Serializable
-import org.jsoup.Jsoup
+import xyz.quaver.pupil.hitomi.GalleryInfo
-import xyz.quaver.Code
+import xyz.quaver.pupil.hitomi.getGalleryInfo
 fun getReferer(galleryID: Int) = "https://hitomi.la/reader/$galleryID.html"
@Serializable
-data class GalleryInfo(
+data class GalleryFiles(
    val width: Int,
-    val hash: String? = null,
+    val hash: String,
    val haswebp: Int = 0,
    val name: String,
-    val height: Int
+    val height: Int,
    val hasavif: Int = 0,
    val hasavifsmalltn: Int? = 0
 )
@Serializable
 data class Reader(val code: Code, val title: String, val galleryInfo: List<GalleryInfo>)
 //Set header `Referer` to reader url to avoid 403 error
-fun getReader(galleryID: Int) : Reader {
+@Deprecated("", replaceWith = ReplaceWith("getGalleryInfo"))
-    val readerUrl = "https://hitomi.la/reader/$galleryID.html"
+fun getReader(galleryID: Int) : GalleryInfo {
-
+   return getGalleryInfo(galleryID)
    val doc = Jsoup.connect(readerUrl).get()
   return Reader(Code.HITOMI, doc.title(), getGalleryInfo(galleryID))
 }
--- a/app/src/main/java/xyz/quaver/pupil/hitomi/results.kt
+++ b/app/src/main/java/xyz/quaver/pupil/hitomi/results.kt
@@ -14,19 +14,17 @@
 *    limitations under the License.
 */
-package xyz.quaver.hitomi
+package xyz.quaver.pupil.hitomi
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.async
-import kotlinx.coroutines.runBlocking
+import kotlinx.coroutines.coroutineScope
 import java.util.*
-fun doSearch(query: String, sortByPopularity: Boolean = false) : List<Int> {
+suspend fun doSearch(query: String, sortByPopularity: Boolean = false) : Set<Int> = coroutineScope {
    val terms = query
        .trim()
        .replace(Regex("""^\?"""), "")
-        .toLowerCase(Locale.US)
+        .lowercase()
        .split(Regex("\\s+"))
        .map {
            it.replace('_', ' ')
@@ -38,42 +36,41 @@ fun doSearch(query: String, sortByPopularity: Boolean = false) : List<Int> {
    for (term in terms) {
        if (term.matches(Regex("^-.+")))
            negativeTerms.push(term.replace(Regex("^-"), ""))
-        else
+        else if (term.isNotBlank())
            positiveTerms.push(term)
    }
    val positiveResults = positiveTerms.map {
-        CoroutineScope(Dispatchers.IO).async {
+        async {
            runCatching {
                getGalleryIDsForQuery(it)
            }.getOrElse { emptySet() }
        }
    }
-    val negativeResults = negativeTerms.map {
+    val negativeResults = negativeTerms.mapIndexed { index, it ->
-        CoroutineScope(Dispatchers.IO).async {
+        async {
            runCatching {
                getGalleryIDsForQuery(it)
            }.getOrElse { emptySet() }
        }
    }
-    var results = when {
+    val results = when {
        sortByPopularity -> getGalleryIDsFromNozomi(null, "popular", "all")
        positiveTerms.isEmpty() -> getGalleryIDsFromNozomi(null, "index", "all")
-        else -> listOf()
+        else -> emptySet()
-    }
+    }.toMutableSet()
-    runBlocking {
+    fun filterPositive(newResults: Set<Int>) {
-        @Synchronized fun filterPositive(newResults: List<Int>) {
+        when {
-            results = when {
+            results.isEmpty() -> results.addAll(newResults)
-                results.isEmpty() -> newResults
+            else -> results.retainAll(newResults)
                else -> newResults.sorted().let { sorted ->
                    results.filter { sorted.binarySearch(it) >= 0 }
                }
        }
    }
-        @Synchronized fun filterNegative(newResults: List<Int>) {
+    fun filterNegative(newResults: Set<Int>) {
-            results = newResults.sorted().let { sorted ->
+        results.removeAll(newResults)
                results.filter { sorted.binarySearch(it) < 0 }
            }
    }
    //positive results
@@ -82,10 +79,9 @@ fun doSearch(query: String, sortByPopularity: Boolean = false) : List<Int> {
    }
    //negative results
-        negativeResults.forEach {
+    negativeResults.forEachIndexed { index, it ->
        filterNegative(it.await())
    }
    }
-    return results
+    results
 }
--- a/app/src/main/java/xyz/quaver/pupil/hitomi/search.kt
+++ b/app/src/main/java/xyz/quaver/pupil/hitomi/search.kt
@@ -14,13 +14,17 @@
 *    limitations under the License.
 */
-package xyz.quaver.hitomi
+package xyz.quaver.pupil.hitomi
 import kotlinx.serialization.json.jsonArray
 import okhttp3.Request
 import xyz.quaver.pupil.client
 import xyz.quaver.pupil.util.content
 import java.net.URL
 import java.nio.ByteBuffer
 import java.nio.ByteOrder
 import java.security.MessageDigest
-import javax.net.ssl.HttpsURLConnection
+import kotlin.math.min
 //searchlib.js
 const val separator = "-"
@@ -31,14 +35,15 @@ const val max_node_size = 464
 const val B = 16
 const val compressed_nozomi_prefix = "n"
-var tag_index_version = getIndexVersion("tagindex")
+val tag_index_version: String by lazy { getIndexVersion("tagindex") }
-var galleries_index_version = getIndexVersion("galleriesindex")
+val galleries_index_version: String by lazy { getIndexVersion("galleriesindex") }
 val tagIndexDomain = "tagindex.hitomi.la"
 fun sha256(data: ByteArray) : ByteArray {
    return MessageDigest.getInstance("SHA-256").digest(data)
 }
-@UseExperimental(ExperimentalUnsignedTypes::class)
+@OptIn(ExperimentalUnsignedTypes::class)
 fun hashTerm(term: String) : UByteArray {
    return sha256(term.toByteArray()).toUByteArray().sliceArray(0 until 4)
 }
@@ -47,17 +52,11 @@ fun sanitize(input: String) : String {
    return input.replace(Regex("[/#]"), "")
 }
-fun getIndexVersion(name: String) : String {
+fun getIndexVersion(name: String) =
-    return try {
+        URL("$protocol//$domain/$name/version?_=${System.currentTimeMillis()}").readText()
        URL("$protocol//$domain/$name/version?_=${System.currentTimeMillis()}")
            .readText()
    } catch (e: Exception) {
        ""
    }
 }
 //search.js
-fun getGalleryIDsForQuery(query: String) : List<Int> {
+fun getGalleryIDsForQuery(query: String) : Set<Int> {
    query.replace("_", " ").let {
        if (it.indexOf(':') > -1) {
            val sides = it.split(":")
@@ -84,17 +83,25 @@ fun getGalleryIDsForQuery(query: String) : List<Int> {
        val key = hashTerm(it)
        val field = "galleries"
-        val node = getNodeAtAddress(field, 0) ?: return emptyList()
+        val node = getNodeAtAddress(field, 0) ?: return emptySet()
        val data = bSearch(field, key, node)
        if (data != null)
            return getGalleryIDsFromData(data)
-        return emptyList()
+        return emptySet()
    }
 }
 fun encodeSearchQueryForUrl(s: Char) =
    when(s) {
        ' ' -> "_"
        '/' -> "slash"
        '.' -> "dot"
        else -> s.toString()
    }
 fun getSuggestionsForQuery(query: String) : List<Suggestion> {
    query.replace('_', ' ').let {
        var field = "global"
@@ -106,28 +113,44 @@ fun getSuggestionsForQuery(query: String) : List<Suggestion> {
            term = sides[1]
        }
-        val key = hashTerm(term)
+        val chars = term.map(::encodeSearchQueryForUrl)
-        val node = getNodeAtAddress(field, 0) ?: return emptyList()
+        val url = "https://$tagIndexDomain/$field${if (chars.isNotEmpty()) "/${chars.joinToString("/")}" else ""}.json"
        val data = bSearch(field, key, node)
-        if (data != null)
+        val request = Request.Builder()
-            return getSuggestionsFromData(field, data)
+            .url(url)
            .build()
-        return emptyList()
+        val suggestions = json.parseToJsonElement(client.newCall(request).execute().body()?.use { body -> body.string() } ?: return emptyList())
        return buildList {
            suggestions.jsonArray.forEach { suggestionRaw ->
                val suggestion = suggestionRaw.jsonArray
                if (suggestion.size < 3) {
                    return@forEach
                }
                val ns = suggestion[2].content ?: ""
                val tagname = sanitize(suggestion[0].content ?: return@forEach)
                val url = when(ns) {
                    "female", "male" -> "/tag/$ns:$tagname${separator}1$extension"
                    "language" -> "/index-$tagname${separator}1$extension"
                    else -> "/$ns/$tagname${separator}all${separator}1$extension"
                }
                add(Suggestion(suggestion[0].content ?: "", suggestion[1].content?.toIntOrNull() ?: 0, url, ns))
            }
        }
    }
 }
 data class Suggestion(val s: String, val t: Int, val u: String, val n: String)
 fun getSuggestionsFromData(field: String, data: Pair<Long, Int>) : List<Suggestion> {
    if (tag_index_version.isEmpty())
        tag_index_version = getIndexVersion("tagindex")
    val url = "$protocol//$domain/$index_dir/$field.$tag_index_version.data"
    val (offset, length) = data
    if (length > 10000 || length <= 0)
        throw Exception("length $length is too long")
-    val inbuf = getURLAtRange(url, offset.until(offset+length)) ?: return emptyList()
+    val inbuf = getURLAtRange(url, offset.until(offset+length))
    val suggestions = ArrayList<Suggestion>()
@@ -166,17 +189,16 @@ fun getSuggestionsFromData(field: String, data: Pair<Long, Int>) : List<Suggesti
    return suggestions
 }
-fun getGalleryIDsFromNozomi(area: String?, tag: String, language: String) : List<Int> {
+fun getGalleryIDsFromNozomi(area: String?, tag: String, language: String) : Set<Int> {
    val nozomiAddress =
            when(area) {
                null -> "$protocol//$domain/$compressed_nozomi_prefix/$tag-$language$nozomiextension"
                else -> "$protocol//$domain/$compressed_nozomi_prefix/$area/$tag-$language$nozomiextension"
            }
    try {
    val bytes = URL(nozomiAddress).readBytes()
-        val nozomi = ArrayList<Int>()
+    val nozomi = mutableSetOf<Int>()
    val arrayBuffer = ByteBuffer
        .wrap(bytes)
@@ -186,23 +208,17 @@ fun getGalleryIDsFromNozomi(area: String?, tag: String, language: String) : List
        nozomi.add(arrayBuffer.int)
    return nozomi
    } catch (e: Exception) {
        return emptyList()
    }
 }
-fun getGalleryIDsFromData(data: Pair<Long, Int>) : List<Int> {
+fun getGalleryIDsFromData(data: Pair<Long, Int>) : Set<Int> {
    if (galleries_index_version.isEmpty())
        galleries_index_version = getIndexVersion("galleriesindex")
    val url = "$protocol//$domain/$galleries_index_dir/galleries.$galleries_index_version.data"
    val (offset, length) = data
    if (length > 100000000 || length <= 0)
        throw Exception("length $length is too long")
-    val inbuf = getURLAtRange(url, offset.until(offset+length)) ?: return emptyList()
+    val inbuf = getURLAtRange(url, offset.until(offset+length))
-    val galleryIDs = ArrayList<Int>()
+    val galleryIDs = mutableSetOf<Int>()
    val buffer = ByteBuffer
        .wrap(inbuf)
@@ -224,39 +240,31 @@ fun getGalleryIDsFromData(data: Pair<Long, Int>) : List<Int> {
 }
 fun getNodeAtAddress(field: String, address: Long) : Node? {
    if (tag_index_version.isEmpty())
        tag_index_version = getIndexVersion("tagindex")
    if (galleries_index_version.isEmpty())
        galleries_index_version = getIndexVersion("galleriesindex")
    val url =
            when(field) {
                "galleries" -> "$protocol//$domain/$galleries_index_dir/galleries.$galleries_index_version.index"
                "languages" -> "$protocol//$domain/$galleries_index_dir/languages.$galleries_index_version.index"
                "nozomiurl" -> "$protocol//$domain/$galleries_index_dir/nozomiurl.$galleries_index_version.index"
                else -> "$protocol//$domain/$index_dir/$field.$tag_index_version.index"
            }
-    val nodedata = getURLAtRange(url, address.until(address+max_node_size)) ?: return null
+    val nodedata = getURLAtRange(url, address.until(address+ max_node_size))
    return decodeNode(nodedata)
 }
-fun getURLAtRange(url: String, range: LongRange) : ByteArray? {
+fun getURLAtRange(url: String, range: LongRange) : ByteArray {
-    try {
+    val request = Request.Builder()
-        with (URL(url).openConnection() as HttpsURLConnection) {
+        .url(url)
-            requestMethod = "GET"
+        .header("Range", "bytes=${range.first}-${range.last}")
        .build()
-            setRequestProperty("Range", "bytes=${range.first}-${range.last}")
+    return client.newCall(request).execute().body()?.use { it.bytes() } ?: byteArrayOf()
            return inputStream.readBytes()
        }
    } catch (e: Exception) {
        return null
    }
 }
-@UseExperimental(ExperimentalUnsignedTypes::class)
+@OptIn(ExperimentalUnsignedTypes::class)
 data class Node(val keys: List<UByteArray>, val datas: List<Pair<Long, Int>>, val subNodeAddresses: List<Long>)
-@UseExperimental(ExperimentalUnsignedTypes::class)
+@OptIn(ExperimentalUnsignedTypes::class)
 fun decodeNode(data: ByteArray) : Node {
    val buffer = ByteBuffer
        .wrap(data)
@@ -298,10 +306,10 @@ fun decodeNode(data: ByteArray) : Node {
    return Node(keys, datas, subNodeAddresses)
 }
-@UseExperimental(ExperimentalUnsignedTypes::class)
+@OptIn(ExperimentalUnsignedTypes::class)
 fun bSearch(field: String, key: UByteArray, node: Node) : Pair<Long, Int>? {
    fun compareArrayBuffers(dv1: UByteArray, dv2: UByteArray) : Int {
-        val top = Math.min(dv1.size, dv2.size)
+        val top = min(dv1.size, dv2.size)
        for (i in 0.until(top)) {
            if (dv1[i] < dv2[i])
@@ -314,7 +322,7 @@ fun bSearch(field: String, key: UByteArray, node: Node) : Pair<Long, Int>? {
    }
    fun locateKey(key: UByteArray, node: Node) : Pair<Boolean, Int> {
-        for (i in 0 until node.keys.size) {
+        for (i in node.keys.indices) {
            val cmpResult = compareArrayBuffers(key, node.keys[i])
            if (cmpResult <= 0)
--- a/app/src/main/java/xyz/quaver/pupil/receiver/UpdateBroadcastReceiver.kt
+++ b/app/src/main/java/xyz/quaver/pupil/receiver/UpdateBroadcastReceiver.kt
@@ -0,0 +1,96 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.receiver
 import android.app.DownloadManager
 import android.app.PendingIntent
 import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
 import android.net.Uri
 import android.os.Build
 import android.webkit.MimeTypeMap
 import androidx.core.app.NotificationCompat
 import androidx.core.app.NotificationManagerCompat
 import androidx.core.content.FileProvider
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.util.Preferences
 import java.io.File
 class UpdateBroadcastReceiver : BroadcastReceiver() {
    override fun onReceive(context: Context?, intent: Intent?) {
        context ?: return
        when (intent?.action) {
            DownloadManager.ACTION_DOWNLOAD_COMPLETE -> {
                // Validate download
                val downloadID: Long = Preferences["update_download_id"]
                val downloadManager = context.getSystemService(Context.DOWNLOAD_SERVICE) as DownloadManager
                if (intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -2) != downloadID)
                    return
                // Get target uri
                val query = DownloadManager.Query()
                    .setFilterById(downloadID)
                val uri = downloadManager.query(query).use { cursor ->
                    if (cursor.moveToFirst()) {
                        cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI))?.let {
                            val uri = Uri.parse(it)
                            when (uri.scheme) {
                                "file" ->
                                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
                                        FileProvider.getUriForFile(context, context.applicationContext.packageName + ".provider", File(uri.path!!))
                                    else
                                        uri
                                "content" -> uri
                                else -> null
                            }
                        }
                    } else
                        null
                } ?: return
                // Build Notification
                val notificationManager = NotificationManagerCompat.from(context)
                val pendingIntent = PendingIntent.getActivity(context, System.currentTimeMillis().toInt(), Intent(Intent.ACTION_VIEW).apply {
                    flags = Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_ACTIVITY_NEW_TASK
                    setDataAndType(uri, MimeTypeMap.getSingleton().getMimeTypeFromExtension("apk"))
                }, if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) PendingIntent.FLAG_IMMUTABLE else 0)
                val notification = NotificationCompat.Builder(context, "update")
                    .setSmallIcon(android.R.drawable.stat_sys_download_done)
                    .setContentTitle(context.getText(R.string.update_download_completed))
                    .setContentText(context.getText(R.string.update_download_completed_description))
                    .setContentIntent(pendingIntent)
                    .build()
                notificationManager.notify(R.id.notification_id_update, notification)
            }
        }
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/receiver/WifiDirectBroadcastReceiver.kt
+++ b/app/src/main/java/xyz/quaver/pupil/receiver/WifiDirectBroadcastReceiver.kt
@@ -0,0 +1,64 @@
 package xyz.quaver.pupil.receiver
 import android.Manifest
 import android.annotation.SuppressLint
 import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
 import android.content.pm.PackageManager
 import android.net.wifi.p2p.WifiP2pManager
 import android.os.Build
 import android.os.Parcelable
 import android.util.Log
 import androidx.core.app.ActivityCompat
 import xyz.quaver.pupil.ui.ErrorType
 import xyz.quaver.pupil.ui.TransferStep
 import xyz.quaver.pupil.ui.TransferViewModel
 private inline fun <reified T : Parcelable> Intent.getParcelableExtraCompat(key: String): T? = when {
    Build.VERSION.SDK_INT >= 33 -> getParcelableExtra(key, T::class.java)
    else -> @Suppress("DEPRECATION") getParcelableExtra(key) as? T
 }
 class WifiDirectBroadcastReceiver(
    private val manager: WifiP2pManager,
    private val channel: WifiP2pManager.Channel,
    private val viewModel: TransferViewModel
 ): BroadcastReceiver() {
    @SuppressLint("MissingPermission")
    override fun onReceive(context: Context?, intent: Intent?) {
        context!!
        when (intent?.action) {
            WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION -> {
                val state = intent.getIntExtra(WifiP2pManager.EXTRA_WIFI_STATE, -1)
                Log.d("PUPILD", "Wifi P2P state changed: $state")
                viewModel.setWifiP2pEnabled(state == WifiP2pManager.WIFI_P2P_STATE_ENABLED)
            }
            WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION -> {
                Log.d("PUPILD", "Wifi P2P peers changed")
                manager.requestPeers(channel) { peers ->
                    viewModel.setPeers(peers)
                }
            }
            WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION -> {
                // Respond to new connection or disconnections
                val networkInfo = intent.getParcelableExtraCompat<android.net.NetworkInfo>(WifiP2pManager.EXTRA_NETWORK_INFO)
                Log.d("PUPILD", "Wifi P2P connection changed: $networkInfo ${networkInfo?.isConnected}")
                if (networkInfo?.isConnected == true) {
                    manager.requestConnectionInfo(channel) { info ->
                        viewModel.setConnectionInfo(info)
                    }
                } else {
                    viewModel.setConnectionInfo(null)
                }
            }
            WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION -> {
                // Respond to this device's wifi state changing
                Log.d("PUPILD", "Wifi P2P this device changed")
                viewModel.setThisDevice(intent.getParcelableExtraCompat(WifiP2pManager.EXTRA_WIFI_P2P_DEVICE))
            }
        }
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/services/DownloadService.kt
+++ b/app/src/main/java/xyz/quaver/pupil/services/DownloadService.kt
@@ -0,0 +1,444 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.services
 import android.annotation.SuppressLint
 import android.app.PendingIntent
 import android.app.Service
 import android.content.Context
 import android.content.Intent
 import android.content.pm.ServiceInfo
 import android.os.Build
 import android.util.Log
 import androidx.core.app.NotificationCompat
 import androidx.core.app.NotificationManagerCompat
 import androidx.core.app.TaskStackBuilder
 import androidx.core.content.ContextCompat
 import com.google.firebase.crashlytics.FirebaseCrashlytics
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.launch
 import okhttp3.Call
 import okhttp3.Callback
 import okhttp3.Response
 import okhttp3.ResponseBody
 import okio.*
 import xyz.quaver.pupil.*
 import xyz.quaver.pupil.ui.ReaderActivity
 import xyz.quaver.pupil.util.*
 import xyz.quaver.pupil.util.downloader.Cache
 import xyz.quaver.pupil.util.downloader.DownloadManager
 import java.io.IOException
 import java.util.concurrent.ConcurrentHashMap
 import kotlin.math.ceil
 import kotlin.math.log10
 private typealias ProgressListener = (DownloadService.Tag, Long, Long, Boolean) -> Unit
 class DownloadService : Service() {
    data class Tag(val galleryID: Int, val index: Int, val startId: Int? = null)
    //region Notification
    private val notificationManager by lazy {
        NotificationManagerCompat.from(this)
    }
    private val serviceNotification by lazy {
        NotificationCompat.Builder(this, "downloader")
            .setContentTitle(getString(R.string.downloader_running))
            .setProgress(0, 0, false)
            .setSmallIcon(R.drawable.ic_notification)
            .setOngoing(true)
    }
    private val notification = ConcurrentHashMap<Int, NotificationCompat.Builder?>()
    private fun initNotification(galleryID: Int) {
        val intent = Intent(this, ReaderActivity::class.java)
            .putExtra("galleryID", galleryID)
        val pendingIntent = TaskStackBuilder.create(this).run {
            addNextIntentWithParentStack(intent)
            getPendingIntent(galleryID, PendingIntent.FLAG_UPDATE_CURRENT or if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) PendingIntent.FLAG_MUTABLE else 0)
        }
        val action =
            NotificationCompat.Action.Builder(0, getText(android.R.string.cancel),
                PendingIntent.getService(
                    this,
                    R.id.notification_download_cancel_action.normalizeID(),
                    Intent(this, DownloadService::class.java)
                        .putExtra(KEY_COMMAND, COMMAND_CANCEL)
                        .putExtra(KEY_ID, galleryID),
                    PendingIntent.FLAG_UPDATE_CURRENT or if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) PendingIntent.FLAG_MUTABLE else 0),
            ).build()
        notification[galleryID] = NotificationCompat.Builder(this, "download").apply {
            setContentTitle(getString(R.string.reader_loading))
            setContentText(getString(R.string.reader_notification_text))
            setSmallIcon(R.drawable.ic_notification)
            setContentIntent(pendingIntent)
            addAction(action)
            setProgress(0, 0, true)
            setOngoing(true)
        }
        notify(galleryID)
    }
    @SuppressLint("RestrictedApi", "MissingPermission")
    private fun notify(galleryID: Int) {
        val max = progress[galleryID]?.size ?: 0
        val progress = progress[galleryID]?.count { it == Float.POSITIVE_INFINITY } ?: 0
        val notification = notification[galleryID] ?: return
        if (!checkNotificationEnabled(this)) return
        if (isCompleted(galleryID)) {
            notification
                .setContentText(getString(R.string.reader_notification_complete))
                .setProgress(0, 0, false)
                .setOngoing(false)
                .mActions.clear()
            notificationManager.cancel(galleryID)
        } else
            notification
                .setProgress(max, progress, false)
                .setContentText("$progress/$max")
        if (DownloadManager.getInstance(this).getDownloadFolder(galleryID) != null || galleryID == priority)
            notification.let { notificationManager.notify(galleryID, it.build()) }
        else
            notificationManager.cancel(galleryID)
    }
    //endregion
    //region ProgressListener
    @Suppress("UNCHECKED_CAST")
    private val progressListener: ProgressListener = { (galleryID, index), bytesRead, contentLength, done ->
        if (!done && progress[galleryID]?.get(index)?.isFinite() == true)
            progress[galleryID]?.set(index, bytesRead * 100F / contentLength)
    }
    private class ProgressResponseBody(
        val tag: Any?,
        val responseBody: ResponseBody,
        val progressListener : ProgressListener
    ) : ResponseBody() {
        private var bufferedSource : BufferedSource? = null
        override fun contentLength() = responseBody.contentLength()
        override fun contentType() = responseBody.contentType()
        override fun source(): BufferedSource {
            if (bufferedSource == null)
                bufferedSource = Okio.buffer(source(responseBody.source()))
            return bufferedSource!!
        }
        private fun source(source: Source) = object: ForwardingSource(source) {
            var totalBytesRead = 0L
            override fun read(sink: Buffer, byteCount: Long): Long {
                val bytesRead = super.read(sink, byteCount)
                totalBytesRead += if (bytesRead == -1L) 0L else bytesRead
                progressListener.invoke(tag as Tag, totalBytesRead, responseBody.contentLength(), bytesRead == -1L)
                return bytesRead
            }
        }
    }
    private val interceptor: PupilInterceptor = { chain ->
        val request = chain.request()
        var response = kotlin.runCatching {
            chain.proceed(request)
        }.getOrNull()
        var limit = 10
        while (response?.isSuccessful != true) {
            if (response?.code() == 503) {
                Thread.sleep(200)
            } else if (--limit < 0)
                break
            response = kotlin.runCatching {
                chain.proceed(request)
            }.getOrNull()
        }
        if (response == null)
            response = chain.proceed(request)
        response!!.newBuilder()
            .body(response.body()?.let {
                ProgressResponseBody(request.tag(), it, progressListener)
            }).build()
    }
    //endregion
    //region Downloader
    /**
    * KEY
    *  primary galleryID
    *  secondary index
    * PRIMARY VALUE
    *  MutableList -> Download in progress
    *  null -> Loading / Gallery doesn't exist
    * SECONDARY VALUE
    *  0 <= value < 100 -> Download in progress
    *  Float.POSITIVE_INFINITY -> Download completed
    */
    val progress = ConcurrentHashMap<Int, MutableList<Float>>()
    var priority = 0
    fun isCompleted(galleryID: Int) = progress[galleryID]?.toList()?.all { it == Float.POSITIVE_INFINITY } == true
    private val callback = object: Callback {
        override fun onFailure(call: Call, e: IOException) {
            Log.d("PUPILD", "ONFAILURE ${call.request().tag()}, ${e}")
            FirebaseCrashlytics.getInstance().recordException(e)
            if (e.message?.contains("cancel", true) == false) {
                val galleryID = (call.request().tag() as Tag).galleryID
            }
        }
        override fun onResponse(call: Call, response: Response) {
            val (galleryID, index, startId) = call.request().tag() as Tag
            val ext = call.request().url().encodedPath().split('.').last()
            CoroutineScope(Dispatchers.IO).launch {
                runCatching {
                    val image = response.also { if (it.code() != 200) throw IOException( "$galleryID $index ${response.request().url()} CODE ${it.code()}" ) }.body()?.use { it.bytes() } ?: throw Exception("Response null")
                    val padding = ceil(progress[galleryID]?.size?.let { log10(it.toFloat()) } ?: 0F).toInt()
                    Cache.getInstance(this@DownloadService, galleryID)
                        .putImage(index, "${index.toString().padStart(padding, '0')}.$ext", image)
                    progress[galleryID]?.set(index, Float.POSITIVE_INFINITY)
                    notify(galleryID)
                    if (isCompleted(galleryID)) {
                        if (DownloadManager.getInstance(this@DownloadService)
                                .getDownloadFolder(galleryID) != null
                        )
                            Cache.getInstance(this@DownloadService, galleryID).moveToDownload()
                        startId?.let { stopSelf(it) }
                    }
                }.onFailure {
                    FirebaseCrashlytics.getInstance().recordException(it)
                }
            }
        }
    }
    fun cancel(startId: Int? = null) {
        client.dispatcher().queuedCalls().filter {
            it.request().tag() is Tag
        }.forEach {
            (it.request().tag() as? Tag)?.startId?.let { stopSelf(it) }
            it.cancel()
        }
        client.dispatcher().runningCalls().filter {
            it.request().tag() is Tag
        }.forEach {
            (it.request().tag() as? Tag)?.startId?.let { stopSelf(it) }
            it.cancel()
        }
        progress.clear()
        notification.clear()
        notificationManager.cancelAll()
        startId?.let { stopSelf(it) }
    }
    fun cancel(galleryID: Int, startId: Int? = null) {
        client.dispatcher().queuedCalls().filter {
            (it.request().tag() as? Tag)?.galleryID == galleryID
        }.forEach {
            (it.request().tag() as? Tag)?.startId?.let { stopSelf(it) }
            it.cancel()
        }
        client.dispatcher().runningCalls().filter {
            (it.request().tag() as? Tag)?.galleryID == galleryID
        }.forEach {
            (it.request().tag() as? Tag)?.startId?.let { stopSelf(it) }
            it.cancel()
        }
        progress.remove(galleryID)
        notification.remove(galleryID)
        notificationManager.cancel(galleryID)
        startId?.let { stopSelf(it) }
    }
    fun delete(galleryID: Int, startId: Int? = null) = CoroutineScope(Dispatchers.IO).launch {
        cancel(galleryID)
        DownloadManager.getInstance(this@DownloadService).deleteDownloadFolder(galleryID)
        Cache.delete(this@DownloadService, galleryID)
        startId?.let { stopSelf(it) }
    }
    fun download(galleryID: Int, priority: Boolean = false, startId: Int? = null): Job = CoroutineScope(Dispatchers.IO).launch {
        if (DownloadManager.getInstance(this@DownloadService).isDownloading(galleryID))
            return@launch
        cleanCache(this@DownloadService)
        val cache = Cache.getInstance(this@DownloadService, galleryID)
        initNotification(galleryID)
        val galleryInfo = cache.getGalleryInfo()
        // Gallery doesn't exist
        if (galleryInfo == null) {
            delete(galleryID)
            progress[galleryID] = mutableListOf()
            return@launch
        }
        histories.add(galleryID)
        progress[galleryID] = MutableList(galleryInfo.files.size) { 0F }
        cache.metadata.imageList?.let {
            it.forEachIndexed { index, image ->
                progress[galleryID]?.set(index, if (image != null) Float.POSITIVE_INFINITY else 0F)
            }
        }
        if (isCompleted(galleryID)) {
            if (DownloadManager.getInstance(this@DownloadService).getDownloadFolder(galleryID) != null)
                Cache.getInstance(this@DownloadService, galleryID).moveToDownload()
            notificationManager.cancel(galleryID)
            startId?.let { stopSelf(it) }
            return@launch
        }
        notification[galleryID]?.setContentTitle(galleryInfo.title.ellipsize(32))
        notify(galleryID)
        val queued = mutableSetOf<Int>()
        if (priority) {
            client.dispatcher().queuedCalls().forEach {
                val queuedID = (it.request().tag() as? Tag)?.galleryID ?: return@forEach
                if (queued.add(queuedID))
                    cancel(queuedID)
            }
        }
        galleryInfo.getRequestBuilders().forEachIndexed { index, it ->
            if (progress[galleryID]?.get(index)?.isInfinite() == false) {
                val request = it.tag(Tag(galleryID, index, startId)).build()
                client.newCall(request).enqueue(callback)
            }
        }
        queued.forEach { download(it) }
    }
    //endregion
    companion object {
        const val KEY_COMMAND = "COMMAND"   // String
        const val KEY_ID = "ID"             // Int
        const val KEY_PRIORITY = "PRIORITY" // Boolean
        const val COMMAND_DOWNLOAD = "DOWNLOAD"
        const val COMMAND_CANCEL = "CANCEL"
        const val COMMAND_DELETE = "DELETE"
        private fun command(context: Context, extras: Intent.() -> Unit) {
            ContextCompat.startForegroundService(context, Intent(context, DownloadService::class.java).apply(extras))
        }
        fun download(context: Context, galleryID: Int, priority: Boolean = false) {
            command(context) {
                putExtra(KEY_COMMAND, COMMAND_DOWNLOAD)
                putExtra(KEY_PRIORITY, priority)
                putExtra(KEY_ID, galleryID)
            }
        }
        fun cancel(context: Context, galleryID: Int? = null) {
            command(context) {
                putExtra(KEY_COMMAND, COMMAND_CANCEL)
                galleryID?.let { putExtra(KEY_ID, it) }
            }
        }
        fun delete(context: Context, galleryID: Int) {
            command(context) {
                putExtra(KEY_COMMAND, COMMAND_DELETE)
                putExtra(KEY_ID, galleryID)
            }
        }
    }
    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.TIRAMISU) {
            startForeground(R.id.downloader_notification_id, serviceNotification.build())
        } else {
            startForeground(R.id.downloader_notification_id, serviceNotification.build(), ServiceInfo.FOREGROUND_SERVICE_TYPE_DATA_SYNC)
        }
        when (intent?.getStringExtra(KEY_COMMAND)) {
            COMMAND_DOWNLOAD -> intent.getIntExtra(KEY_ID, -1).let { if (it > 0)
                download(it, intent.getBooleanExtra(KEY_PRIORITY, false), startId)
            }
            COMMAND_CANCEL -> intent.getIntExtra(KEY_ID, -1).let { if (it > 0) cancel(it, startId) else cancel(startId = startId) }
            COMMAND_DELETE -> intent.getIntExtra(KEY_ID, -1).let { if (it > 0) delete(it, startId) }
        }
        return START_NOT_STICKY
    }
    inner class Binder : android.os.Binder() {
        val service = this@DownloadService
    }
    private val binder = Binder()
    override fun onBind(p0: Intent?) = binder
    override fun onCreate() {
        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.TIRAMISU) {
            startForeground(R.id.downloader_notification_id, serviceNotification.build())
        } else {
            startForeground(R.id.downloader_notification_id, serviceNotification.build(), ServiceInfo.FOREGROUND_SERVICE_TYPE_DATA_SYNC)
        }
        interceptors[Tag::class] = interceptor
    }
    override fun onDestroy() {
        interceptors.remove(Tag::class)
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/services/TransferClientService.kt
+++ b/app/src/main/java/xyz/quaver/pupil/services/TransferClientService.kt
@@ -0,0 +1,128 @@
 package xyz.quaver.pupil.services
 import android.app.Service
 import android.content.Intent
 import android.content.pm.ServiceInfo
 import android.os.Build
 import android.os.IBinder
 import android.util.Log
 import androidx.core.app.NotificationCompat
 import androidx.core.app.ServiceCompat
 import io.ktor.network.selector.SelectorManager
 import io.ktor.network.sockets.aSocket
 import io.ktor.network.sockets.openReadChannel
 import io.ktor.network.sockets.openWriteChannel
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.DelicateCoroutinesApi
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.channels.Channel
 import kotlinx.coroutines.channels.trySendBlocking
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withTimeout
 import xyz.quaver.pupil.R
 import kotlin.coroutines.Continuation
 import kotlin.coroutines.resume
 import kotlin.coroutines.suspendCoroutine
 class TransferClientService : Service() {
    private val selectorManager = SelectorManager(Dispatchers.IO)
    private val channel = Channel<Pair<TransferPacket, Continuation<TransferPacket>>>()
    private var job: Job? = null
    private fun startForeground() = runCatching {
        val notification = NotificationCompat.Builder(this, "transfer")
            .setContentTitle("Pupil")
            .setContentText("Transfer server is running")
            .setSmallIcon(R.drawable.ic_notification)
            .build()
        ServiceCompat.startForeground(
            this,
            1,
            notification,
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
                ServiceInfo.FOREGROUND_SERVICE_TYPE_DATA_SYNC
            } else 0
        )
    }
    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
        val address = intent?.getStringExtra("address") ?: run {
            stopSelf(startId)
            return START_STICKY
        }
        startForeground()
        Log.d("PUPILD", "Starting service with address $address")
        job?.cancel()
        job = CoroutineScope(Dispatchers.IO).launch {
            Log.d("PUPILD", "Connecting to $address")
            val socket = aSocket(selectorManager).tcp().connect(address, 12221)
            Log.d("PUPILD", "Connected to $address")
            val readChannel = socket.openReadChannel()
            val writeChannel = socket.openWriteChannel(autoFlush = true)
            runCatching {
                TransferPacket.Hello().writeToChannel(writeChannel)
                val handshake = TransferPacket.readFromChannel(readChannel)
                if (handshake !is TransferPacket.Hello || handshake.version != TRANSFER_PROTOCOL_VERSION) {
                    throw IllegalStateException("Invalid handshake")
                }
                while (true) {
                    val (packet, continuation) = channel.receive()
                    Log.d("PUPILD", "Sending packet $packet")
                    packet.writeToChannel(writeChannel)
                    val response = TransferPacket.readFromChannel(readChannel).also {
                        Log.d("PUPILD", "Received packet $it")
                    }
                    continuation.resume(response)
                }
            }.onFailure {
                Log.d("PUPILD", "Connection closed with error $it")
                channel.close()
                socket.close()
                stopSelf(startId)
            }
        }
        return START_STICKY
    }
    override fun onDestroy() {
        super.onDestroy()
        job?.cancel()
    }
    inner class Binder: android.os.Binder() {
        @OptIn(DelicateCoroutinesApi::class)
        suspend fun sendPacket(packet: TransferPacket): Result<TransferPacket.ListResponse> = runCatching {
            check(job != null) { "Service not running" }
            check(!channel.isClosedForSend) { "Service not running" }
            val response = suspendCoroutine { continuation ->
                check (channel.trySend(packet to continuation).isSuccess) { "Service not running" }
            }
            check (response is TransferPacket.ListResponse) { "Invalid response" }
            response
        }
    }
    private val binder = Binder()
    override fun onBind(intent: Intent?): IBinder = binder
 }
--- a/app/src/main/java/xyz/quaver/pupil/services/TransferProtocol.kt
+++ b/app/src/main/java/xyz/quaver/pupil/services/TransferProtocol.kt
@@ -0,0 +1,94 @@
 package xyz.quaver.pupil.services
 import io.ktor.utils.io.ByteReadChannel
 import io.ktor.utils.io.ByteWriteChannel
 const val TRANSFER_PROTOCOL_VERSION: UByte = 1u
 enum class TransferType(val value: UByte) {
    INVALID(255u),
    HELLO(0u),
    PING(1u),
    PONG(2u),
    LIST_REQUEST(3u),
    LIST_RESPONSE(4u),
 }
 sealed interface TransferPacket {
    val type: TransferType
    suspend fun writeToChannel(channel: ByteWriteChannel)
    data class Hello(val version: UByte = TRANSFER_PROTOCOL_VERSION): TransferPacket {
        override val type = TransferType.HELLO
        override suspend fun writeToChannel(channel: ByteWriteChannel) {
            channel.writeByte(type.value.toByte())
            channel.writeByte(version.toByte())
        }
    }
    data object Ping: TransferPacket {
        override val type = TransferType.PING
        override suspend fun writeToChannel(channel: ByteWriteChannel) {
            channel.writeByte(type.value.toByte())
        }
    }
    data object Pong: TransferPacket {
        override val type = TransferType.PONG
        override suspend fun writeToChannel(channel: ByteWriteChannel) {
            channel.writeByte(type.value.toByte())
        }
    }
    data object ListRequest: TransferPacket {
        override val type = TransferType.LIST_REQUEST
        override suspend fun writeToChannel(channel: ByteWriteChannel) {
            channel.writeByte(type.value.toByte())
        }
    }
    data object Invalid: TransferPacket {
        override val type = TransferType.INVALID
        override suspend fun writeToChannel(channel: ByteWriteChannel) {
            channel.writeByte(type.value.toByte())
        }
    }
    data class ListResponse(
        val favoritesCount: Int,
        val historyCount: Int,
        val downloadsCount: Int,
    ): TransferPacket {
        override val type = TransferType.LIST_RESPONSE
        override suspend fun writeToChannel(channel: ByteWriteChannel) {
            channel.writeByte(type.value.toByte())
            channel.writeInt(favoritesCount)
            channel.writeInt(historyCount)
            channel.writeInt(downloadsCount)
        }
    }
    companion object {
        suspend fun readFromChannel(channel: ByteReadChannel): TransferPacket {
            return when(val type = channel.readByte().toUByte()) {
                TransferType.HELLO.value -> {
                    val version = channel.readByte().toUByte()
                    Hello(version)
                }
                TransferType.PING.value -> Ping
                TransferType.PONG.value -> Pong
                TransferType.LIST_REQUEST.value -> ListRequest
                TransferType.LIST_RESPONSE.value -> {
                    val favoritesCount = channel.readInt()
                    val historyCount = channel.readInt()
                    val downloadsCount = channel.readInt()
                    ListResponse(favoritesCount, historyCount, downloadsCount)
                }
                else -> throw IllegalArgumentException("Unknown packet type: $type")
            }
        }
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/services/TransferServerService.kt
+++ b/app/src/main/java/xyz/quaver/pupil/services/TransferServerService.kt
@@ -0,0 +1,123 @@
 package xyz.quaver.pupil.services
 import android.app.Service
 import android.content.Intent
 import android.content.pm.ServiceInfo
 import android.os.Build
 import android.os.IBinder
 import android.util.Log
 import androidx.core.app.NotificationCompat
 import androidx.core.app.ServiceCompat
 import io.ktor.network.selector.SelectorManager
 import io.ktor.network.sockets.ServerSocket
 import io.ktor.network.sockets.Socket
 import io.ktor.network.sockets.aSocket
 import io.ktor.network.sockets.openReadChannel
 import io.ktor.network.sockets.openWriteChannel
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.channels.Channel
 import kotlinx.coroutines.launch
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.favorites
 import xyz.quaver.pupil.histories
 import xyz.quaver.pupil.util.downloader.DownloadManager
 class TransferServerService : Service() {
    private val selectorManager = SelectorManager(Dispatchers.IO)
    private var serverSocket: ServerSocket? = null
    private val job = Job()
    private fun startForeground() = runCatching {
        val notification = NotificationCompat.Builder(this, "transfer")
            .setContentTitle("Pupil")
            .setContentText("Transfer server is running")
            .setSmallIcon(R.drawable.ic_notification)
            .build()
        ServiceCompat.startForeground(
            this,
            1,
            notification,
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
                ServiceInfo.FOREGROUND_SERVICE_TYPE_DATA_SYNC
            } else 0
        )
    }
    private fun generateListResponse(): TransferPacket.ListResponse {
        val favoritesCount = favorites.size
        val historyCount = histories.size
        val downloadsCount = DownloadManager.getInstance(this).downloadFolderMap.size
        return TransferPacket.ListResponse(favoritesCount, historyCount, downloadsCount)
    }
    private suspend fun handleConnection(socket: Socket) {
        val readChannel = socket.openReadChannel()
        val writeChannel = socket.openWriteChannel(autoFlush = true)
        runCatching {
            while (true) {
                val packet = TransferPacket.readFromChannel(readChannel)
                Log.d("PUPILD", "Received packet $packet")
                binder.channel.trySend(packet)
                val response = when (packet) {
                    is TransferPacket.Hello -> TransferPacket.Hello()
                    is TransferPacket.Ping -> TransferPacket.Pong
                    is TransferPacket.ListRequest -> generateListResponse()
                    else -> TransferPacket.Invalid
                }
                response.writeToChannel(writeChannel)
            }
        }.onFailure {
            socket.close()
        }
    }
    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
        val address = intent?.getStringExtra("address") ?: run {
            stopSelf(startId)
            return START_STICKY
        }
        if (serverSocket != null) {
            return START_STICKY
        }
        startForeground()
        val serverSocket = aSocket(selectorManager).tcp().bind(address, 12221).also {
            this@TransferServerService.serverSocket = it
        }
        CoroutineScope(Dispatchers.IO + job).launch {
            while (true) {
                Log.d("PUPILD", "Waiting for connection")
                val socket = serverSocket.accept()
                Log.d("PUPILD", "Accepted connection from ${socket.remoteAddress}")
                launch { handleConnection(socket) }
            }
        }
        return START_STICKY
    }
    override fun onDestroy() {
        super.onDestroy()
        job.cancel()
        serverSocket?.close()
    }
    inner class Binder: android.os.Binder() {
        val channel = Channel<TransferPacket>()
    }
    private val binder = Binder()
    override fun onBind(intent: Intent?): IBinder = binder
 }
--- a/app/src/main/java/xyz/quaver/pupil/types/SendLogException.kt
+++ b/app/src/main/java/xyz/quaver/pupil/types/SendLogException.kt
@@ -1,6 +1,6 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
- *     Copyright (C) 2020  tom5079
+ *     Copyright (C) 2022  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
@@ -16,9 +16,7 @@
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
-package xyz.quaver.pupil.util
+package xyz.quaver.pupil.types
-const val REQUEST_LOCK = 38238
+class SendLogException : Exception()
-const val REQUEST_RESTORE = 16546
+class JavascriptException(message: String?) : Exception(message)
 const val REQUEST_DOWNLOAD_FOLDER = 3874
 const val REQUEST_DOWNLOAD_FOLDER_OLD = 3425
--- a/app/src/main/java/xyz/quaver/pupil/types/TagSuggestion.kt
+++ b/app/src/main/java/xyz/quaver/pupil/types/TagSuggestion.kt
@@ -18,15 +18,33 @@
 package xyz.quaver.pupil.types
-import com.arlib.floatingsearchview.suggestions.model.SearchSuggestion
+import kotlinx.parcelize.IgnoredOnParcel
-import kotlinx.android.parcel.Parcelize
+import kotlinx.parcelize.Parcelize
-import xyz.quaver.hitomi.Suggestion
+import xyz.quaver.floatingsearchview.suggestions.model.SearchSuggestion
 import xyz.quaver.pupil.hitomi.Suggestion
 import xyz.quaver.pupil.util.translations
@Parcelize
 data class TagSuggestion(val s: String, val t: Int, val u: String, val n: String) : SearchSuggestion {
    constructor(s: Suggestion) : this(s.s, s.t, s.u, s.n)
-    override fun getBody(): String {
+    @IgnoredOnParcel
-        return s
+    override val body =
-    }
+        if (translations[s] != null)
            "${translations[s]} ($s)"
        else
            s
 }
@Parcelize
 class Suggestion(override val body: String) : SearchSuggestion
@Parcelize
 class NoResultSuggestion(override val body: String) : SearchSuggestion
@Parcelize
 class LoadingSuggestion(override val body: String) : SearchSuggestion
@Parcelize
@Suppress("PARCELABLE_PRIMARY_CONSTRUCTOR_IS_EMPTY")
 class FavoriteHistorySwitch(override val body: String) : SearchSuggestion
--- a/app/src/main/java/xyz/quaver/pupil/types/Tags.kt
+++ b/app/src/main/java/xyz/quaver/pupil/types/Tags.kt
@@ -24,7 +24,7 @@ import kotlinx.serialization.Serializable
 data class Tag(val area: String?, val tag: String, val isNegative: Boolean = false) {
    companion object {
        fun parse(tag: String) : Tag {
-            if (tag.first() == '-') {
+            if (tag.firstOrNull() == '-') {
                tag.substring(1).split(Regex(":"), 2).let {
                    return when(it.size) {
                        2 -> Tag(it[0], it[1], true)
@@ -62,12 +62,10 @@ data class Tag(val area: String?, val tag: String, val isNegative: Boolean = fal
        return false
    }
-    override fun hashCode(): Int {
+    override fun hashCode() = toString().hashCode()
        return super.hashCode()
    }
 }
-class Tags(tag: List<Tag?>?) : ArrayList<Tag>() {
+class Tags(val tags: MutableSet<Tag> = mutableSetOf()) : MutableSet<Tag> by tags {
    companion object {
        fun parse(tags: String) : Tags {
@@ -77,20 +75,13 @@ class Tags(tag: List<Tag?>?) : ArrayList<Tag>() {
                        Tag.parse(it)
                    else
                        null
-                }
+                }.filterNotNull().toMutableSet()
            )
        }
    }
    init {
        tag?.forEach {
            if (it != null)
                add(it)
        }
    }
    fun contains(element: String): Boolean {
-        forEach {
+        tags.forEach {
            if (it.toString() == element)
                return true
        }
@@ -99,23 +90,22 @@ class Tags(tag: List<Tag?>?) : ArrayList<Tag>() {
    }
    fun add(element: String): Boolean {
-        return super.add(Tag.parse(element))
+        return tags.add(Tag.parse(element))
    }
    fun remove(element: String) {
-        filter { it.toString() == element }.forEach {
+        tags.filter { it.toString() == element }.forEach {
-            remove(it)
+            tags.remove(it)
        }
    }
    fun removeByArea(area: String, isNegative: Boolean? = null) {
-        filter { it.area == area && (if(isNegative == null) true else (it.isNegative == isNegative)) }.forEach {
+        tags.filter { it.area == area && (if(isNegative == null) true else (it.isNegative == isNegative)) }.forEach {
-            remove(it)
+            tags.remove(it)
        }
    }
    override fun toString(): String {
-        return joinToString(" ") { it.toString() }
+        return tags.joinToString(" ") { it.toString() }
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/BaseActivity.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/BaseActivity.kt
@@ -0,0 +1,67 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.ui
 import android.app.Activity
 import android.content.Intent
 import android.os.Bundle
 import android.os.PersistableBundle
 import android.view.WindowManager
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.annotation.CallSuper
 import androidx.appcompat.app.AppCompatActivity
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.util.LockManager
 import xyz.quaver.pupil.util.Preferences
 import xyz.quaver.pupil.util.normalizeID
 open class BaseActivity : AppCompatActivity() {
    private var locked: Boolean = true
    private val lockLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
        if (it.resultCode == Activity.RESULT_OK)
            locked = false
        else
            finish()
    }
    @CallSuper
    override fun onCreate(savedInstanceState: Bundle?, persistentState: PersistableBundle?) {
        super.onCreate(savedInstanceState, persistentState)
        locked = !LockManager(this).locks.isNullOrEmpty()
    }
    @CallSuper
    override fun onResume() {
        super.onResume()
        if (Preferences["security_mode"])
            window.setFlags(
                WindowManager.LayoutParams.FLAG_SECURE,
                WindowManager.LayoutParams.FLAG_SECURE)
        else
            window.clearFlags(WindowManager.LayoutParams.FLAG_SECURE)
        if (locked)
            lockLauncher.launch(Intent(this, LockActivity::class.java))
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/LockActivity.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/LockActivity.kt
@@ -21,23 +21,162 @@ package xyz.quaver.pupil.ui
 import android.app.Activity
 import android.app.AlertDialog
 import android.os.Bundle
 import android.view.animation.Animation
 import android.view.animation.AnimationUtils
 import androidx.appcompat.app.AppCompatActivity
 import androidx.biometric.BiometricManager
 import androidx.biometric.BiometricPrompt
 import androidx.core.content.ContextCompat
 import com.andrognito.patternlockview.PatternLockView
 import com.google.android.material.snackbar.Snackbar
 import kotlinx.android.synthetic.main.activity_lock.*
 import kotlinx.android.synthetic.main.fragment_pattern_lock.*
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.databinding.LockActivityBinding
 import xyz.quaver.pupil.ui.fragment.PINLockFragment
 import xyz.quaver.pupil.ui.fragment.PatternLockFragment
 import xyz.quaver.pupil.util.Lock
 import xyz.quaver.pupil.util.LockManager
 import xyz.quaver.pupil.util.Preferences
 private var lastUnlocked = 0L
 class LockActivity : AppCompatActivity() {
    private lateinit var lockManager: LockManager
    private var mode: String? = null
    private lateinit var binding: LockActivityBinding
    private val patternLockFragment = PatternLockFragment().apply {
        var lastPass = ""
        onPatternDrawn = {
            when(mode) {
                null -> {
                    val result = lockManager.check(it)
                    if (result == true) {
                        lastUnlocked = System.currentTimeMillis()
                        setResult(Activity.RESULT_OK)
                        finish()
                    } else
                        binding.patternLockView.setViewMode(PatternLockView.PatternViewMode.WRONG)
                }
                "add_lock" -> {
                    if (lastPass.isEmpty()) {
                        lastPass = it
                        Snackbar.make(view!!, R.string.settings_lock_confirm, Snackbar.LENGTH_LONG).show()
                    } else {
                        if (lastPass == it) {
                            LockManager(context!!).add(Lock.generate(Lock.Type.PATTERN, it))
                            finish()
                        } else {
                            binding.patternLockView.setViewMode(PatternLockView.PatternViewMode.WRONG)
                            lastPass = ""
                            Snackbar.make(view!!, R.string.settings_lock_wrong_confirm, Snackbar.LENGTH_LONG).show()
                        }
                    }
                }
            }
        }
    }
    private val pinLockFragment = PINLockFragment().apply {
        var lastPass = ""
        onPINEntered = {
            when(mode) {
                null -> {
                    val result = lockManager.check(it)
                    if (result == true) {
                        lastUnlocked = System.currentTimeMillis()
                        setResult(Activity.RESULT_OK)
                        finish()
                    } else {
                        binding.indicatorDots.startAnimation(AnimationUtils.loadAnimation(context, R.anim.shake).apply {
                            setAnimationListener(object: Animation.AnimationListener {
                                override fun onAnimationEnd(animation: Animation?) {
                                    binding.pinLockView.resetPinLockView()
                                    binding.pinLockView.isEnabled = true
                                }
                                override fun onAnimationStart(animation: Animation?) {
                                    binding.pinLockView.isEnabled = false
                                }
                                override fun onAnimationRepeat(animation: Animation?) {
                                    // Do Nothing
                                }
                            })
                        })
                    }
                }
                "add_lock" -> {
                    if (lastPass.isEmpty()) {
                        lastPass = it
                        binding.pinLockView.resetPinLockView()
                        Snackbar.make(view!!, R.string.settings_lock_confirm, Snackbar.LENGTH_LONG).show()
                    } else {
                        if (lastPass == it) {
                            LockManager(context!!).add(Lock.generate(Lock.Type.PIN, it))
                            finish()
                        } else {
                            binding.indicatorDots.startAnimation(AnimationUtils.loadAnimation(context, R.anim.shake).apply {
                                setAnimationListener(object: Animation.AnimationListener {
                                    override fun onAnimationEnd(animation: Animation?) {
                                        binding.pinLockView.resetPinLockView()
                                        binding.pinLockView.isEnabled = true
                                    }
                                    override fun onAnimationStart(animation: Animation?) {
                                        binding.pinLockView.isEnabled = false
                                    }
                                    override fun onAnimationRepeat(animation: Animation?) {
                                        // Do Nothing
                                    }
                                })
                            })
                            lastPass = ""
                            Snackbar.make(view!!, R.string.settings_lock_wrong_confirm, Snackbar.LENGTH_LONG).show()
                        }
                    }
                }
            }
        }
    }
    private fun showBiometricPrompt() {
        val promptInfo = BiometricPrompt.PromptInfo.Builder()
            .setTitle(getText(R.string.settings_lock_fingerprint_prompt))
            .setSubtitle(getText(R.string.settings_lock_fingerprint_prompt_subtitle))
            .setNegativeButtonText(getText(android.R.string.cancel))
            .setConfirmationRequired(false)
            .build()
        val biometricPrompt = BiometricPrompt(this, ContextCompat.getMainExecutor(this),
            object : BiometricPrompt.AuthenticationCallback() {
                override fun onAuthenticationSucceeded(
                    result: BiometricPrompt.AuthenticationResult) {
                    super.onAuthenticationSucceeded(result)
                    lastUnlocked = System.currentTimeMillis()
                    setResult(RESULT_OK)
                    finish()
                    return
                }
            })
        // Displays the "log in" prompt.
        biometricPrompt.authenticate(promptInfo)
    }
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_lock)
+        binding = LockActivityBinding.inflate(layoutInflater)
        setContentView(binding.root)
-        val lockManager = try {
+        lockManager = try {
            LockManager(this)
        } catch (e: Exception) {
            AlertDialog.Builder(this).apply {
@@ -50,12 +189,8 @@ class LockActivity : AppCompatActivity() {
            return
        }
-        val mode = intent.getStringExtra("mode")
+        mode = intent.getStringExtra("mode")
-
+        val force = intent.getBooleanExtra("force", false)
        lock_pattern.isEnabled = false
        lock_pin.isEnabled = false
        lock_fingerprint.isEnabled = false
        lock_password.isEnabled = false
        when(mode) {
            null -> {
@@ -64,52 +199,82 @@ class LockActivity : AppCompatActivity() {
                    finish()
                    return
                }
            }
            "add_lock" -> {
                when(intent.getStringExtra("type")!!) {
                    "pattern" -> {
-                    }
+                if (System.currentTimeMillis() - lastUnlocked < 5*60*1000 && !force) {
-                }
+                    lastUnlocked = System.currentTimeMillis()
-            }
+                    setResult(RESULT_OK)
        }
        supportFragmentManager.beginTransaction().add(
            R.id.lock_content,
            PatternLockFragment().apply {
                var lastPass = ""
                onPatternDrawn = {
                    when(mode) {
                        null -> {
                            val result = lockManager.check(it)
                            if (result == true) {
                                setResult(Activity.RESULT_OK)
                    finish()
-                            } else
+                    return
                                lock_pattern_view.setViewMode(PatternLockView.PatternViewMode.WRONG)
                }
                        "add_lock" -> {
                            if (lastPass.isEmpty()) {
                                lastPass = it
-                                Snackbar.make(view!!, R.string.settings_lock_confirm, Snackbar.LENGTH_LONG).show()
+                if (
-                            } else {
+                    Preferences["lock_fingerprint"]
-                                if (lastPass == it) {
+                    && BiometricManager.from(this).canAuthenticate() == BiometricManager.BIOMETRIC_SUCCESS
-                                    LockManager(context!!).add(Lock.generate(Lock.Type.PATTERN, it))
+                ) {
-                                    finish()
+                    binding.fingerprintBtn.apply {
-                                } else {
+                        isEnabled = true
-                                    lock_pattern_view.setViewMode(PatternLockView.PatternViewMode.WRONG)
+                        setOnClickListener {
-                                    lastPass = ""
+                            showBiometricPrompt()
                        }
                    }
                    showBiometricPrompt()
                }
-                                    Snackbar.make(view!!, R.string.settings_lock_wrong_confirm, Snackbar.LENGTH_LONG).show()
+                binding.patternBtn.apply {
-                                }
+                    isEnabled = lockManager.contains(Lock.Type.PATTERN)
-                            }
+                    setOnClickListener {
-                        }
+                        supportFragmentManager.beginTransaction().replace(
-                    }
+                            R.id.lock_content, patternLockFragment
                }
            }
                        ).commit()
                    }
                }
                binding.pinBtn.apply {
                    isEnabled = lockManager.contains(Lock.Type.PIN)
                    setOnClickListener {
                        supportFragmentManager.beginTransaction().replace(
                            R.id.lock_content, pinLockFragment
                        ).commit()
                    }
                }
                binding.passwordBtn.isEnabled = false
                when (lockManager.locks!!.first().type) {
                    Lock.Type.PIN -> {
                        supportFragmentManager.beginTransaction().add(
                            R.id.lock_content, pinLockFragment
                        ).commit()
                    }
                    Lock.Type.PATTERN -> {
                        supportFragmentManager.beginTransaction().add(
                            R.id.lock_content, patternLockFragment
                        ).commit()
                    }
                    else -> return
                }
            }
            "add_lock" -> {
                binding.patternBtn.isEnabled = false
                binding.pinBtn.isEnabled = false
                binding.fingerprintBtn.isEnabled = false
                binding.passwordBtn.isEnabled = false
                when(intent.getStringExtra("type")!!) {
                    "pattern" -> {
                        binding.patternBtn.isEnabled = true
                        supportFragmentManager.beginTransaction().add(
                            R.id.lock_content, patternLockFragment
                        ).commit()
                    }
                    "pin" -> {
                        binding.pinBtn.isEnabled = true
                        supportFragmentManager.beginTransaction().add(
                            R.id.lock_content, pinLockFragment
                        ).commit()
                    }
                }
            }
        }
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/MainActivity.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/MainActivity.kt
--- a/app/src/main/java/xyz/quaver/pupil/ui/ReaderActivity.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/ReaderActivity.kt
@@ -18,38 +18,54 @@
 package xyz.quaver.pupil.ui
 import android.Manifest
 import android.content.ComponentName
 import android.content.Intent
 import android.content.ServiceConnection
 import android.content.pm.PackageManager
 import android.graphics.drawable.Animatable
 import android.graphics.drawable.Drawable
 import android.os.Build
 import android.os.Bundle
 import android.os.IBinder
 import android.view.*
 import android.view.animation.Animation
 import android.view.animation.AnticipateInterpolator
 import android.view.animation.OvershootInterpolator
 import android.view.animation.TranslateAnimation
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.content.ContextCompat
 import androidx.preference.PreferenceManager
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.PagerSnapHelper
 import androidx.recyclerview.widget.RecyclerView
 import androidx.vectordrawable.graphics.drawable.Animatable2Compat
 import androidx.vectordrawable.graphics.drawable.AnimatedVectorDrawableCompat
 import com.crashlytics.android.Crashlytics
 import com.google.android.material.snackbar.Snackbar
-import io.fabric.sdk.android.Fabric
+import com.google.firebase.crashlytics.FirebaseCrashlytics
-import kotlinx.android.synthetic.main.activity_reader.*
+import com.google.mlkit.vision.face.Face
-import kotlinx.android.synthetic.main.activity_reader.view.*
+import com.qtalk.recyclerviewfastscroller.RecyclerViewFastScroller
-import kotlinx.android.synthetic.main.dialog_numberpicker.view.*
+import kotlinx.coroutines.CoroutineScope
-import kotlinx.serialization.ImplicitReflectionSerializer
+import kotlinx.coroutines.Dispatchers
-import xyz.quaver.Code
+import kotlinx.coroutines.delay
-import xyz.quaver.pupil.Pupil
+import kotlinx.coroutines.launch
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.adapters.ReaderAdapter
-import xyz.quaver.pupil.util.Histories
+import xyz.quaver.pupil.databinding.NumberpickerDialogBinding
-import xyz.quaver.pupil.util.download.Cache
+import xyz.quaver.pupil.databinding.ReaderActivityBinding
-import xyz.quaver.pupil.util.download.DownloadWorker
+import xyz.quaver.pupil.favorites
-import java.util.*
+import xyz.quaver.pupil.services.DownloadService
-import kotlin.concurrent.schedule
+import xyz.quaver.pupil.util.Preferences
 import xyz.quaver.pupil.util.camera
 import xyz.quaver.pupil.util.checkNotificationEnabled
 import xyz.quaver.pupil.util.closeCamera
 import xyz.quaver.pupil.util.downloader.Cache
 import xyz.quaver.pupil.util.downloader.DownloadManager
 import xyz.quaver.pupil.util.requestNotificationPermission
 import xyz.quaver.pupil.util.showNotificationPermissionExplanationDialog
 import xyz.quaver.pupil.util.startCamera
-class ReaderActivity : AppCompatActivity() {
+class ReaderActivity : BaseActivity() {
    private var galleryID = 0
    private var currentPage = 0
@@ -59,48 +75,76 @@ class ReaderActivity : AppCompatActivity() {
    set(value) {
        field = value
-        (reader_recyclerview.adapter as ReaderAdapter).isFullScreen = value
+        (binding.recyclerview.adapter as ReaderAdapter).isFullScreen = value
    }
-        reader_progressbar.visibility = when {
+    private lateinit var cache: Cache
-            value -> View.VISIBLE
+    var downloader: DownloadService? = null
-            else -> View.GONE
+    private val conn = object: ServiceConnection {
        override fun onServiceConnected(name: ComponentName?, service: IBinder?) {
            downloader = (service as DownloadService.Binder).service.also {
                it.priority = 0
                if (!it.progress.containsKey(galleryID))
                    DownloadService.download(this@ReaderActivity, galleryID, true)
            }
        }
-    private val timer = Timer()
+        override fun onServiceDisconnected(name: ComponentName?) {
            downloader = null
        }
    }
    private val snapHelper = PagerSnapHelper()
    private var menu: Menu? = null
-    private lateinit var favorites: Histories
+    private val requestPermissionLauncher = registerForActivityResult(ActivityResultContracts.RequestPermission()) { isGranted ->
        if (isGranted)
            toggleCamera()
        else
            AlertDialog.Builder(this)
                .setTitle(R.string.error)
                .setMessage(R.string.camera_denied)
                .setPositiveButton(android.R.string.ok) { _, _ ->}
                .show()
    }
    enum class Eye {
        LEFT,
        RIGHT
    }
    private var cameraEnabled = false
    private var eyeType: Eye? = null
    private var eyeTime: Long = 0L
    private lateinit var binding: ReaderActivityBinding
    private val requestNotificationPermssionLauncher = registerForActivityResult(ActivityResultContracts.RequestPermission()) { isGranted ->
        if (!isGranted) {
            showNotificationPermissionExplanationDialog(this)
        }
    }
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = ReaderActivityBinding.inflate(layoutInflater)
        setContentView(binding.root)
        title = getString(R.string.reader_loading)
        supportActionBar?.setDisplayHomeAsUpEnabled(false)
        favorites = (application as Pupil).favorites
        window.setFlags(
            WindowManager.LayoutParams.FLAG_SECURE,
            WindowManager.LayoutParams.FLAG_SECURE)
        setContentView(R.layout.activity_reader)
        handleIntent(intent)
-
+        cache = Cache.getInstance(this, galleryID)
-        if (Fabric.isInitialized())
+        FirebaseCrashlytics.getInstance().setCustomKey("GalleryID", galleryID)
            Crashlytics.setInt("GalleryID", galleryID)
        if (galleryID == 0) {
            onBackPressed()
            return
        }
        initDownloadListener()
        initView()
        initDownloader()
    }
    override fun onNewIntent(intent: Intent) {
@@ -113,14 +157,13 @@ class ReaderActivity : AppCompatActivity() {
            val uri = intent.data
            val lastPathSegment = uri?.lastPathSegment
            if (uri != null && lastPathSegment != null) {
-                val nonNumber = Regex("[^-?0-9]+")
+                galleryID = if (uri.host?.endsWith("hasha.in") == true) {
-
+                    lastPathSegment?.toInt() ?: 0
-                galleryID = when (uri.host) {
+                } else when (uri.host) {
-                    "hitomi.la" -> lastPathSegment.replace(nonNumber, "").toInt()
+                    "hitomi.la" ->
-                    "히요비.asia" -> lastPathSegment.toInt()
+                        Regex("([0-9]+).html").find(lastPathSegment)?.groupValues?.get(1)?.toIntOrNull() ?: 0
                    "xn--9w3b15m8vo.asia" -> lastPathSegment.toInt()
                    "e-hentai.org" -> uri.pathSegments[1].toInt()
-                    else -> return
+                    else -> 0
                }
            }
        } else {
@@ -128,26 +171,10 @@ class ReaderActivity : AppCompatActivity() {
        }
    }
-    override fun onResume() {
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
        val preferences = PreferenceManager.getDefaultSharedPreferences(this)
        if (preferences.getBoolean("security_mode", false))
            window.setFlags(
                WindowManager.LayoutParams.FLAG_SECURE,
                WindowManager.LayoutParams.FLAG_SECURE)
        else
            window.clearFlags(WindowManager.LayoutParams.FLAG_SECURE)
        super.onResume()
    }
    @UseExperimental(ImplicitReflectionSerializer::class)
    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
        menuInflater.inflate(R.menu.reader, menu)
-        with(menu?.findItem(R.id.reader_menu_favorite)) {
+        with(menu.findItem(R.id.reader_menu_favorite)) {
            this ?: return@with
            if (favorites.contains(galleryID))
                (icon as Animatable).start()
        }
@@ -156,20 +183,22 @@ class ReaderActivity : AppCompatActivity() {
        return true
    }
-    override fun onOptionsItemSelected(item: MenuItem?): Boolean {
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
-        when(item?.itemId) {
+        when(item.itemId) {
            R.id.reader_menu_page_indicator -> {
-                val view = LayoutInflater.from(this).inflate(R.layout.dialog_numberpicker, findViewById(android.R.id.content), false)
+                // TODO: Switch to DialogFragment
-                with(view.dialog_number_picker) {
+                val binding = NumberpickerDialogBinding.inflate(layoutInflater, binding.root, false)
                with(binding.numberPicker) {
                    minValue = 1
-                    maxValue=reader_recyclerview?.adapter?.itemCount ?: 0
+                    maxValue = cache.metadata.galleryInfo?.files?.size ?: 0
                    value = currentPage
                }
                val dialog = AlertDialog.Builder(this).apply {
-                    setView(view)
+                    setView(binding.root)
                }.create()
-                view.dialog_ok.setOnClickListener {
+                binding.okButton.setOnClickListener {
-                    (reader_recyclerview.layoutManager as LinearLayoutManager?)?.scrollToPositionWithOffset(view.dialog_number_picker.value-1, 0)
+                    (this@ReaderActivity.binding.recyclerview.layoutManager as LinearLayoutManager).scrollToPositionWithOffset(binding.numberPicker.value-1, 0)
                    dialog.dismiss()
                }
@@ -192,14 +221,32 @@ class ReaderActivity : AppCompatActivity() {
        return true
    }
    override fun onResume() {
        super.onResume()
        bindService(Intent(this, DownloadService::class.java), conn, BIND_AUTO_CREATE)
        if (cameraEnabled)
            startCamera(this, cameraCallback)
    }
    override fun onPause() {
        super.onPause()
        closeCamera()
        if (downloader != null)
            unbindService(conn)
        downloader?.priority = galleryID
    }
    override fun onDestroy() {
        super.onDestroy()
-        timer.cancel()
+        update = false
        (reader_recyclerview?.adapter as? ReaderAdapter)?.timer?.cancel()
-        if (!Cache(this).isDownloading(galleryID))
+        if (!DownloadManager.getInstance(this).isDownloading(galleryID))
-            DownloadWorker.getInstance(this@ReaderActivity).cancel(galleryID)
+            DownloadService.cancel(this, galleryID)
    }
    override fun onBackPressed() {
@@ -221,12 +268,12 @@ class ReaderActivity : AppCompatActivity() {
        //currentPage is 1-based
        return when(keyCode) {
            KeyEvent.KEYCODE_VOLUME_UP -> {
-                (reader_recyclerview.layoutManager as LinearLayoutManager?)?.scrollToPositionWithOffset(currentPage-2, 0)
+                (binding.recyclerview.layoutManager as LinearLayoutManager).scrollToPositionWithOffset(currentPage-2, 0)
                true
            }
            KeyEvent.KEYCODE_VOLUME_DOWN -> {
-                (reader_recyclerview.layoutManager as LinearLayoutManager?)?.scrollToPositionWithOffset(currentPage, 0)
+                (binding.recyclerview.layoutManager as LinearLayoutManager?)?.scrollToPositionWithOffset(currentPage, 0)
                true
            }
@@ -234,45 +281,49 @@ class ReaderActivity : AppCompatActivity() {
        }
    }
-    private fun initDownloader() {
+    private var update = true
-        val worker = DownloadWorker.getInstance(this).apply {
+    private fun initDownloadListener() {
-            queue.add(galleryID)
+        CoroutineScope(Dispatchers.Main).launch {
-        }
+            while (update) {
                delay(1000)
-        timer.schedule(0, 1000) {
+                val downloader = downloader ?: continue
            if (worker.progress.indexOfKey(galleryID) < 0)  //loading
                return@schedule
-            if (worker.progress[galleryID] == null) {      //Gallery not found
+                if (!downloader.progress.containsKey(galleryID))  //loading
-                timer.cancel()
+                    continue
                if (downloader.progress[galleryID]?.isEmpty() == true) {      //Gallery not found
                    update = false
                    Snackbar
-                    .make(reader_layout, R.string.reader_failed_to_find_gallery, Snackbar.LENGTH_INDEFINITE)
+                        .make(binding.root, R.string.reader_failed_to_find_gallery, Snackbar.LENGTH_INDEFINITE)
                        .show()
                    return@launch
                }
-            runOnUiThread {
+                binding.downloadProgressbar.max = binding.recyclerview.adapter?.itemCount ?: 0
-                reader_download_progressbar.max = reader_recyclerview.adapter?.itemCount ?: 0
+                binding.downloadProgressbar.progress =
-                reader_download_progressbar.progress = worker.progress[galleryID]?.count { !it.isFinite() } ?: 0
+                    downloader.progress[galleryID]?.count { it.isInfinite() } ?: 0
                reader_progressbar.max = reader_recyclerview.adapter?.itemCount ?: 0
                if (title == getString(R.string.reader_loading)) {
-                    val reader = (reader_recyclerview.adapter as ReaderAdapter).reader
+                    val galleryInfo = cache.metadata.galleryInfo
-                    if (reader != null) {
+                    if (galleryInfo != null) {
-                        title = reader.title
+                        with(binding.recyclerview.adapter as ReaderAdapter) {
-                        menu?.findItem(R.id.reader_menu_page_indicator)?.title = "$currentPage/${reader.galleryInfo.size}"
+                            this.galleryInfo = galleryInfo
                            notifyDataSetChanged()
                        }
-                        menu?.findItem(R.id.reader_type)?.icon = ContextCompat.getDrawable(this@ReaderActivity,
+                        title = galleryInfo.title
-                            when (reader.code) {
+                        menu?.findItem(R.id.reader_menu_page_indicator)?.title =
-                                Code.HITOMI -> R.drawable.hitomi
+                            "$currentPage/${galleryInfo.files.size}"
-                                Code.HIYOBI -> R.drawable.ic_hiyobi
+
-                                else -> android.R.color.transparent
+                        menu?.findItem(R.id.reader_type)?.icon = ContextCompat.getDrawable(this@ReaderActivity, R.drawable.hitomi)
                            })
                    }
                }
-                if (worker.progress[galleryID]?.all { !it.isFinite() } == true) {   //Download finished
+                if (downloader.isCompleted(galleryID)) {   //Download finished
-                    reader_download_progressbar.visibility = View.GONE
+                    binding.downloadProgressbar.visibility = View.GONE
                    animateDownloadFAB(false)
                }
@@ -281,7 +332,7 @@ class ReaderActivity : AppCompatActivity() {
    }
    private fun initView() {
-        with(reader_recyclerview) {
+        with(binding.recyclerview) {
            adapter = ReaderAdapter(this@ReaderActivity, galleryID).apply {
                onItemClickListener = {
                    if (isScroll) {
@@ -291,7 +342,7 @@ class ReaderActivity : AppCompatActivity() {
                        scrollMode(false)
                        fullscreen(true)
                    } else {
-                        (reader_recyclerview.layoutManager as LinearLayoutManager?)?.scrollToPosition(currentPage) //Moves to next page because currentPage is 1-based indexing
+                        (binding.recyclerview.layoutManager as LinearLayoutManager).scrollToPositionWithOffset(currentPage, 0) //Moves to next page because currentPage is 1-based indexing
                    }
                }
            }
@@ -301,9 +352,9 @@ class ReaderActivity : AppCompatActivity() {
                    super.onScrolled(recyclerView, dx, dy)
                    if (dy < 0)
-                        this@ReaderActivity.reader_fab.showMenuButton(true)
+                        binding.fab.showMenuButton(true)
                    else if (dy > 0)
-                        this@ReaderActivity.reader_fab.hideMenuButton(true)
+                        binding.fab.hideMenuButton(true)
                    val layoutManager = recyclerView.layoutManager as LinearLayoutManager
@@ -311,33 +362,66 @@ class ReaderActivity : AppCompatActivity() {
                        return
                    currentPage = layoutManager.findFirstVisibleItemPosition()+1
                    menu?.findItem(R.id.reader_menu_page_indicator)?.title = "$currentPage/${recyclerView.adapter!!.itemCount}"
                    this@ReaderActivity.reader_progressbar.progress = currentPage
                }
            })
        }
-        with(reader_fab_download) {
+        with(binding.downloadFab) {
-            animateDownloadFAB(Cache(context).isDownloading(galleryID)) //If download in progress, animate button
+            animateDownloadFAB(DownloadManager.getInstance(this@ReaderActivity).getDownloadFolder(galleryID) != null) //If download in progress, animate button
            setOnClickListener {
-                if (Cache(context).isDownloading(galleryID)) {
+                requestNotificationPermission(
-                   Cache(context).setDownloading(galleryID, false)
+                    this@ReaderActivity,
                    requestNotificationPermssionLauncher
                ) {
                    val downloadManager = DownloadManager.getInstance(this@ReaderActivity)
                    if (downloadManager.isDownloading(galleryID)) {
                        downloadManager.deleteDownloadFolder(galleryID)
                        animateDownloadFAB(false)
                    } else {
-                    Cache(context).setDownloading(galleryID, true)
+                        downloadManager.addDownloadFolder(galleryID)
                        DownloadService.download(context, galleryID, true)
                        animateDownloadFAB(true)
                    }
                }
            }
        }
-        with(reader_fab_fullscreen) {
+        with(binding.retryFab) {
            setImageResource(R.drawable.refresh)
            setOnClickListener {
                DownloadService.download(context, galleryID)
            }
        }
        with(binding.autoFab) {
            setImageResource(R.drawable.eye_white)
            setOnClickListener {
                when {
                    ContextCompat.checkSelfPermission(context, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED -> {
                        toggleCamera()
                    }
                    Build.VERSION.SDK_INT >= 23 && shouldShowRequestPermissionRationale(Manifest.permission.CAMERA) -> {
                        AlertDialog.Builder(this@ReaderActivity)
                            .setTitle(R.string.warning)
                            .setMessage(R.string.camera_denied)
                            .setPositiveButton(android.R.string.ok) { _, _ ->}
                            .show()
                    }
                    else ->
                        requestPermissionLauncher.launch(Manifest.permission.CAMERA)
                }
            }
        }
        with(binding.fullscreenFab) {
            setImageResource(R.drawable.ic_fullscreen)
            setOnClickListener {
                isFullscreen = true
                fullscreen(isFullscreen)
-                this@ReaderActivity.reader_fab.close(true)
+                binding.fab.close(true)
            }
        }
    }
@@ -347,41 +431,58 @@ class ReaderActivity : AppCompatActivity() {
            if (isFullscreen) {
                flags = flags or WindowManager.LayoutParams.FLAG_FULLSCREEN
                supportActionBar?.hide()
-                this@ReaderActivity.reader_fab.visibility = View.INVISIBLE
+                binding.fab.visibility = View.INVISIBLE
                binding.scroller.let {
                    it.handleWidth = resources.getDimensionPixelSize(R.dimen.thumb_height)
                    it.handleHeight = resources.getDimensionPixelSize(R.dimen.thumb_width)
                    it.handleDrawable = ContextCompat.getDrawable(this@ReaderActivity, R.drawable.thumb_horizontal)
                    it.fastScrollDirection = RecyclerViewFastScroller.FastScrollDirection.HORIZONTAL
                }
            } else {
                flags = flags and WindowManager.LayoutParams.FLAG_FULLSCREEN.inv()
                supportActionBar?.show()
-                this@ReaderActivity.reader_fab.visibility = View.VISIBLE
+                binding.fab.visibility = View.VISIBLE
                binding.scroller.let {
                    it.handleWidth = resources.getDimensionPixelSize(R.dimen.thumb_width)
                    it.handleHeight = resources.getDimensionPixelSize(R.dimen.thumb_height)
                    it.handleDrawable = ContextCompat.getDrawable(this@ReaderActivity, R.drawable.thumb)
                    it.fastScrollDirection = RecyclerViewFastScroller.FastScrollDirection.VERTICAL
                }
            }
            window.attributes = this
        }
        binding.recyclerview.adapter = binding.recyclerview.adapter   // Force to redraw
    }
    private fun scrollMode(isScroll: Boolean) {
        if (isScroll) {
            snapHelper.attachToRecyclerView(null)
-            reader_recyclerview.layoutManager = LinearLayoutManager(this)
+            binding.recyclerview.layoutManager = LinearLayoutManager(this)
        } else {
-            snapHelper.attachToRecyclerView(reader_recyclerview)
+            snapHelper.attachToRecyclerView(binding.recyclerview)
-            reader_recyclerview.layoutManager = LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false)
+            binding.recyclerview.layoutManager = object: LinearLayoutManager(this, HORIZONTAL, Preferences["rtl", false]) {
                override fun calculateExtraLayoutSpace(state: RecyclerView.State, extraLayoutSpace: IntArray) {
                    extraLayoutSpace.fill(600)
                }
            }
        }
-        (reader_recyclerview.layoutManager as LinearLayoutManager).scrollToPositionWithOffset(currentPage-1, 0)
+        (binding.recyclerview.layoutManager as LinearLayoutManager).scrollToPositionWithOffset(currentPage-1, 0)
    }
    private fun animateDownloadFAB(animate: Boolean) {
-        with(reader_fab_download) {
+        with(binding.downloadFab) {
            if (animate) {
                val icon = AnimatedVectorDrawableCompat.create(context, R.drawable.ic_downloading)
                icon?.registerAnimationCallback(object : Animatable2Compat.AnimationCallback() {
                    override fun onAnimationEnd(drawable: Drawable?) {
-                        val worker = DownloadWorker.getInstance(context)
+                        if (downloader?.isCompleted(galleryID) == true) // If download is finished, stop animating
                        if (worker.progress[galleryID]?.all { !it.isFinite() } == true) // If download is finished, stop animating
                            post {
                                setImageResource(R.drawable.ic_download)
-                                labelText = getString(R.string.reader_fab_download)
+                                labelText = getString(R.string.reader_fab_download_cancel)
                            }
                        else                                                            // Or continue animate
                            post {
@@ -399,4 +500,120 @@ class ReaderActivity : AppCompatActivity() {
            }
        }
    }
    val cameraCallback: (List<Face>) -> Unit = callback@{ faces ->
        binding.eyeCard.dot.let {
            it.visibility = View.VISIBLE
            CoroutineScope(Dispatchers.Main).launch {
                delay(50)
                it.visibility = View.INVISIBLE
            }
        }
        if (faces.size != 1)
            ContextCompat.getDrawable(this, R.drawable.eye_off).let {
                with(binding.eyeCard) {
                    leftEye.setImageDrawable(it)
                    rightEye.setImageDrawable(it)
                }
                return@callback
            }
        val (left, right) = Pair(
            faces[0].rightEyeOpenProbability?.let { it > 0.4 } == true,
            faces[0].leftEyeOpenProbability?.let { it > 0.4 } == true
        )
        with(binding.eyeCard) {
            leftEye.setImageDrawable(
                ContextCompat.getDrawable(
                    leftEye.context,
                    if (left) R.drawable.eye else R.drawable.eye_closed
                )
            )
            rightEye.setImageDrawable(
                ContextCompat.getDrawable(
                    rightEye.context,
                    if (right) R.drawable.eye else R.drawable.eye_closed
                )
            )
        }
        when {
            // Both closed / opened
            !left.xor(right) -> {
                eyeType = null
                eyeTime = 0L
            }
            !left -> {
                if (eyeType != Eye.LEFT) {
                    eyeType = Eye.LEFT
                    eyeTime = System.currentTimeMillis()
                }
            }
            !right -> {
                if (eyeType != Eye.RIGHT) {
                    eyeType = Eye.RIGHT
                    eyeTime = System.currentTimeMillis()
                }
            }
        }
        if (eyeType != null && System.currentTimeMillis() - eyeTime > 100) {
            (binding.recyclerview.layoutManager as LinearLayoutManager).let {
                it.scrollToPositionWithOffset(when(eyeType!!) {
                    Eye.RIGHT -> {
                        if (it.reverseLayout) currentPage - 2 else currentPage
                    }
                    Eye.LEFT -> {
                        if (it.reverseLayout) currentPage else currentPage - 2
                    }
                }, 0)
            }
            eyeTime = System.currentTimeMillis() + 500
        }
    }
    private fun toggleCamera() {
        val eyes = binding.eyeCard.root
        when (camera) {
            null -> {
                binding.autoFab.labelText = getString(R.string.reader_fab_auto_cancel)
                binding.autoFab.setImageResource(R.drawable.eye_off_white)
                eyes.apply {
                    visibility = View.VISIBLE
                    TranslateAnimation(0F, 0F, -100F, 0F).apply {
                        duration = 500
                        fillAfter = false
                        interpolator = OvershootInterpolator()
                    }.let { startAnimation(it) }
                }
                startCamera(this, cameraCallback)
                cameraEnabled = true
            }
            else -> {
                binding.autoFab.labelText = getString(R.string.reader_fab_auto)
                binding.autoFab.setImageResource(R.drawable.eye_white)
                eyes.apply {
                    TranslateAnimation(0F, 0F, 0F, -100F).apply {
                        duration = 500
                        fillAfter = false
                        interpolator = AnticipateInterpolator()
                        setAnimationListener(object: Animation.AnimationListener {
                            override fun onAnimationStart(p0: Animation?) {}
                            override fun onAnimationRepeat(p0: Animation?) {}
                            override fun onAnimationEnd(p0: Animation?) {
                                eyes.visibility = View.GONE
                            }
                        })
                    }.let { startAnimation(it) }
                }
                closeCamera()
                cameraEnabled = false
            }
        }
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/SettingsActivity.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/SettingsActivity.kt
@@ -18,42 +18,15 @@
 package xyz.quaver.pupil.ui
 import android.app.Activity
 import android.content.Intent
 import android.net.Uri
 import android.os.Build
 import android.os.Bundle
 import android.view.MenuItem
 import android.view.WindowManager
 import androidx.appcompat.app.AppCompatActivity
 import androidx.documentfile.provider.DocumentFile
 import androidx.preference.PreferenceManager
 import com.google.android.material.snackbar.Snackbar
 import kotlinx.android.synthetic.main.settings_activity.*
 import kotlinx.serialization.ImplicitReflectionSerializer
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.parseList
 import net.rdrei.android.dirchooser.DirectoryChooserActivity
 import xyz.quaver.pupil.Pupil
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.ui.fragment.LockFragment
 import xyz.quaver.pupil.ui.fragment.SettingsFragment
 import xyz.quaver.pupil.util.REQUEST_DOWNLOAD_FOLDER
 import xyz.quaver.pupil.util.REQUEST_DOWNLOAD_FOLDER_OLD
 import xyz.quaver.pupil.util.REQUEST_LOCK
 import xyz.quaver.pupil.util.REQUEST_RESTORE
 import java.io.File
 import java.nio.charset.Charset
-class SettingsActivity : AppCompatActivity() {
+class SettingsActivity : BaseActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        window.setFlags(
            WindowManager.LayoutParams.FLAG_SECURE,
            WindowManager.LayoutParams.FLAG_SECURE)
        setContentView(R.layout.settings_activity)
        supportFragmentManager
            .beginTransaction()
@@ -62,95 +35,11 @@ class SettingsActivity : AppCompatActivity() {
        supportActionBar?.setDisplayHomeAsUpEnabled(true)
    }
-    override fun onResume() {
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
-        val preferences = PreferenceManager.getDefaultSharedPreferences(this)
+        when (item.itemId) {
        if (preferences.getBoolean("security_mode", false))
            window.setFlags(
                WindowManager.LayoutParams.FLAG_SECURE,
                WindowManager.LayoutParams.FLAG_SECURE)
        else
            window.clearFlags(WindowManager.LayoutParams.FLAG_SECURE)
        super.onResume()
    }
    override fun onOptionsItemSelected(item: MenuItem?): Boolean {
        when (item?.itemId) {
            android.R.id.home -> onBackPressed()
        }
        return true
    }
    @UseExperimental(ImplicitReflectionSerializer::class)
    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        when(requestCode) {
            REQUEST_LOCK -> {
                if (resultCode == Activity.RESULT_OK) {
                    supportFragmentManager
                        .beginTransaction()
                        .replace(R.id.settings, LockFragment())
                        .addToBackStack("Lock")
                        .commitAllowingStateLoss()
                }
            }
            REQUEST_RESTORE -> {
                if (resultCode == Activity.RESULT_OK) {
                    val uri = data?.data ?: return
                    try {
                        val json = contentResolver.openInputStream(uri).use { inputStream ->
                            inputStream!!
                            inputStream.readBytes().toString(Charset.defaultCharset())
                        }
                        (application as Pupil).favorites.addAll(Json.parseList<Int>(json).also {
                            Snackbar.make(
                                window.decorView,
                                getString(R.string.settings_restore_successful, it.size),
                                Snackbar.LENGTH_LONG
                            ).show()
                        })
                    } catch (e: Exception) {
                        Snackbar.make(
                            window.decorView,
                            R.string.settings_restore_failed,
                            Snackbar.LENGTH_LONG
                        ).show()
                    }
                }
            }
            REQUEST_DOWNLOAD_FOLDER -> {
                if (resultCode == Activity.RESULT_OK) {
                    data?.data?.also { uri ->
                        val takeFlags: Int = intent.flags and (Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
                        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT)
                            contentResolver.takePersistableUriPermission(uri, takeFlags)
                        if (DocumentFile.fromTreeUri(this, uri)?.canWrite() == false)
                            Snackbar.make(settings, R.string.settings_dl_location_not_writable, Snackbar.LENGTH_LONG).show()
                        else
                            PreferenceManager.getDefaultSharedPreferences(this).edit()
                                .putString("dl_location", uri.toString())
                                .apply()
                    }
                }
            }
            REQUEST_DOWNLOAD_FOLDER_OLD -> {
                if (resultCode == DirectoryChooserActivity.RESULT_CODE_DIR_SELECTED) {
                    val directory = data?.getStringExtra(DirectoryChooserActivity.RESULT_SELECTED_DIR)!!
                    if (!File(directory).canWrite())
                        Snackbar.make(settings, R.string.settings_dl_location_not_writable, Snackbar.LENGTH_LONG).show()
                    else
                        PreferenceManager.getDefaultSharedPreferences(this).edit()
                            .putString("dl_location", Uri.fromFile(File(directory)).toString())
                            .apply()
                }
            }
            else -> super.onActivityResult(requestCode, resultCode, data)
        }
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/TransferActivity.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/TransferActivity.kt
@@ -0,0 +1,382 @@
 package xyz.quaver.pupil.ui
 import android.Manifest
 import android.annotation.SuppressLint
 import android.content.BroadcastReceiver
 import android.content.ComponentName
 import android.content.Intent
 import android.content.IntentFilter
 import android.content.ServiceConnection
 import android.content.pm.ActivityInfo
 import android.content.pm.PackageManager
 import android.net.wifi.WpsInfo
 import android.net.wifi.p2p.WifiP2pConfig
 import android.net.wifi.p2p.WifiP2pDevice
 import android.net.wifi.p2p.WifiP2pDeviceList
 import android.net.wifi.p2p.WifiP2pInfo
 import android.net.wifi.p2p.WifiP2pManager
 import android.os.Build.VERSION
 import android.os.Build.VERSION_CODES
 import android.os.Bundle
 import android.os.IBinder
 import android.util.Log
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.activity.viewModels
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.app.ActivityCompat
 import androidx.core.content.ContextCompat
 import androidx.fragment.app.commit
 import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.flowWithLifecycle
 import androidx.lifecycle.lifecycleScope
 import kotlinx.coroutines.channels.Channel
 import kotlinx.coroutines.channels.consumeEach
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.collectLatest
 import kotlinx.coroutines.flow.filterNotNull
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.launch
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.receiver.WifiDirectBroadcastReceiver
 import xyz.quaver.pupil.services.TransferClientService
 import xyz.quaver.pupil.services.TransferPacket
 import xyz.quaver.pupil.services.TransferServerService
 import xyz.quaver.pupil.ui.fragment.TransferConnectedFragment
 import xyz.quaver.pupil.ui.fragment.TransferDirectionFragment
 import xyz.quaver.pupil.ui.fragment.TransferPermissionFragment
 import xyz.quaver.pupil.ui.fragment.TransferSelectDataFragment
 import xyz.quaver.pupil.ui.fragment.TransferTargetFragment
 import xyz.quaver.pupil.ui.fragment.TransferWaitForConnectionFragment
 import kotlin.coroutines.resume
 import kotlin.coroutines.resumeWithException
 import kotlin.coroutines.suspendCoroutine
 class TransferActivity : AppCompatActivity(R.layout.transfer_activity) {
    private val viewModel: TransferViewModel by viewModels()
    private val intentFilter = IntentFilter().apply {
        addAction(WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION)
        addAction(WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION)
        addAction(WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION)
        addAction(WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION)
    }
    private lateinit var manager: WifiP2pManager
    private lateinit var channel: WifiP2pManager.Channel
    private var receiver: BroadcastReceiver? = null
    private val requestPermissionLauncher = registerForActivityResult(
        ActivityResultContracts.RequestPermission()
    ) { granted ->
        if (granted) {
            viewModel.setStep(TransferStep.TARGET)
        } else {
            viewModel.setStep(TransferStep.PERMISSION)
        }
    }
    private var clientServiceBinder: TransferClientService.Binder? = null
    private val clientServiceConnection = object : ServiceConnection {
        override fun onServiceConnected(name: ComponentName?, service: IBinder?) {
            clientServiceBinder = service as TransferClientService.Binder
        }
        override fun onServiceDisconnected(name: ComponentName?) {
            clientServiceBinder = null
        }
    }
    private fun checkPermission(force: Boolean = false): Boolean {
        val permissionRequired = if (VERSION.SDK_INT < VERSION_CODES.TIRAMISU) {
            Manifest.permission.ACCESS_FINE_LOCATION
        } else {
            Manifest.permission.NEARBY_WIFI_DEVICES
        }
        val permissionGranted =
            ActivityCompat.checkSelfPermission(this, permissionRequired) == PackageManager.PERMISSION_GRANTED
        val shouldShowRationale =
            ActivityCompat.shouldShowRequestPermissionRationale(this, permissionRequired)
        if (!permissionGranted) {
            if (shouldShowRationale && force) {
                viewModel.setStep(TransferStep.PERMISSION)
            } else {
                requestPermissionLauncher.launch(permissionRequired)
            }
            return false
        }
        return true
    }
    private fun handleServerResponse(response: TransferPacket?) {
        when (response) {
            is TransferPacket.ListResponse -> {
                Log.d("PUPILD", "Received list response $response")
            }
            else -> {
                Log.d("PUPILD", "Received invalid response $response")
            }
        }
    }
    private suspend fun WifiP2pManager.disconnect() {
        suspendCoroutine { continuation ->
            removeGroup(channel, object : WifiP2pManager.ActionListener {
                override fun onSuccess() {
                    continuation.resume(Unit)
                }
                override fun onFailure(reason: Int) {
                    continuation.resume(Unit)
                }
            })
        }
        suspendCoroutine { continuation ->
            cancelConnect(channel, object: WifiP2pManager.ActionListener {
                override fun onSuccess() {
                    continuation.resume(Unit)
                }
                override fun onFailure(reason: Int) {
                    continuation.resume(Unit)
                }
            })
        }
    }
    @SuppressLint("SourceLockedOrientationActivity")
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        supportActionBar?.hide()
        requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
        manager = getSystemService(WIFI_P2P_SERVICE) as WifiP2pManager
        channel = manager.initialize(this, mainLooper, null)
        viewModel.peerToConnect.observe(this) { peer ->
            if (peer == null) { return@observe }
            if (!checkPermission()) { return@observe }
            val config = WifiP2pConfig().apply {
                deviceAddress = peer.deviceAddress
                wps.setup = WpsInfo.PBC
            }
            manager.connect(channel, config, object: WifiP2pManager.ActionListener {
                override fun onSuccess() { }
                override fun onFailure(reason: Int) {
                    viewModel.connect(null)
                }
            })
        }
        lifecycleScope.launch {
            viewModel.messageQueue.consumeEach {
                clientServiceBinder?.sendPacket(it)?.getOrNull()?.let(::handleServerResponse)
            }
        }
        lifecycleScope.launch {
            viewModel.step.flowWithLifecycle(lifecycle, Lifecycle.State.STARTED).collectLatest step@{ step ->
                when (step) {
                    TransferStep.TARGET,
                    TransferStep.TARGET_FORCE -> {
                        if (!checkPermission(step == TransferStep.TARGET_FORCE)) {
                            return@step
                        }
                        manager.discoverPeers(channel, object: WifiP2pManager.ActionListener {
                            override fun onSuccess() { }
                            override fun onFailure(reason: Int) {
                            }
                        })
                        supportFragmentManager.commit(true) {
                            replace(R.id.fragment_container_view, TransferTargetFragment())
                        }
                        val hostAddress = viewModel.connectionInfo.filterNotNull().first {
                            it.groupFormed
                        }.groupOwnerAddress.hostAddress
                        val intent = Intent(this@TransferActivity, TransferClientService::class.java).also {
                            it.putExtra("address", hostAddress)
                        }
                        ContextCompat.startForegroundService(this@TransferActivity, intent)
                        bindService(intent, clientServiceConnection, BIND_AUTO_CREATE)
                        viewModel.setStep(TransferStep.SELECT_DATA)
                    }
                    TransferStep.DIRECTION -> {
                        manager.disconnect()
                        supportFragmentManager.commit(true) {
                            replace(R.id.fragment_container_view, TransferDirectionFragment())
                        }
                    }
                    TransferStep.PERMISSION -> {
                        supportFragmentManager.commit(true) {
                            replace(R.id.fragment_container_view, TransferPermissionFragment())
                        }
                    }
                    TransferStep.WAIT_FOR_CONNECTION -> {
                        Log.d("PUPILD", "wait for connection")
                        if (!checkPermission()) { return@step }
                        runCatching {
                            suspendCoroutine { continuation ->
                                manager.createGroup(channel, object: WifiP2pManager.ActionListener {
                                    override fun onSuccess() {
                                        continuation.resume(Unit)
                                    }
                                    override fun onFailure(reason: Int) {
                                        continuation.resumeWithException(Exception("Failed to create group $reason"))
                                    }
                                })
                            }
                            supportFragmentManager.commit(true) {
                                replace(R.id.fragment_container_view, TransferWaitForConnectionFragment())
                            }
                            val address = viewModel.connectionInfo.filterNotNull().first {
                                it.groupFormed && it.isGroupOwner
                            }.groupOwnerAddress.hostAddress
                            val intent = Intent(this@TransferActivity, TransferServerService::class.java).also {
                                it.putExtra("address", address)
                            }
                            ContextCompat.startForegroundService(this@TransferActivity, intent)
                            val binder: TransferServerService.Binder = suspendCoroutine { continuation ->
                                bindService(intent, object: ServiceConnection {
                                    override fun onServiceConnected(name: ComponentName?, service: IBinder?) {
                                        continuation.resume(service as TransferServerService.Binder)
                                    }
                                    override fun onServiceDisconnected(name: ComponentName?) { }
                                }, BIND_AUTO_CREATE)
                            }
                            binder.channel.receive()
                            viewModel.setStep(TransferStep.CONNECTED)
                        }.onFailure {
                            Log.e("PUPILD", "Failed to create group", it)
                        }
                        supportFragmentManager.commit(true) {
                            replace(R.id.fragment_container_view, TransferWaitForConnectionFragment())
                        }
                    }
                    TransferStep.CONNECTED -> {
                        supportFragmentManager.commit(true) {
                            replace(R.id.fragment_container_view, TransferConnectedFragment())
                        }
                    }
                    TransferStep.SELECT_DATA -> {
                        supportFragmentManager.commit(true) {
                            replace(R.id.fragment_container_view, TransferSelectDataFragment())
                        }
                    }
                }
            }
        }
    }
    override fun onResume() {
        super.onResume()
        bindService(Intent(this, TransferClientService::class.java), clientServiceConnection, BIND_AUTO_CREATE)
        WifiDirectBroadcastReceiver(manager, channel, viewModel).also {
            receiver = it
            registerReceiver(it, intentFilter)
        }
    }
    override fun onPause() {
        super.onPause()
        unbindService(clientServiceConnection)
        receiver?.let { unregisterReceiver(it) }
        receiver = null
    }
 }
 enum class TransferStep {
    TARGET, TARGET_FORCE, DIRECTION, PERMISSION, WAIT_FOR_CONNECTION, CONNECTED, SELECT_DATA
 }
 enum class ErrorType {
 }
 class TransferViewModel : ViewModel() {
    private val _step: MutableStateFlow<TransferStep> = MutableStateFlow(TransferStep.DIRECTION)
    val step: StateFlow<TransferStep> = _step
    private val _error = MutableLiveData<ErrorType?>(null)
    val error: LiveData<ErrorType?> = _error
    private val _wifiP2pEnabled: MutableLiveData<Boolean> = MutableLiveData(false)
    val wifiP2pEnabled: LiveData<Boolean> = _wifiP2pEnabled
    private val _thisDevice: MutableLiveData<WifiP2pDevice?> = MutableLiveData(null)
    val thisDevice: LiveData<WifiP2pDevice?> = _thisDevice
    private val _peers: MutableLiveData<WifiP2pDeviceList?> = MutableLiveData(null)
    val peers: LiveData<WifiP2pDeviceList?> = _peers
    private val _connectionInfo: MutableStateFlow<WifiP2pInfo?> = MutableStateFlow(null)
    val connectionInfo: StateFlow<WifiP2pInfo?> = _connectionInfo
    private val _peerToConnect: MutableLiveData<WifiP2pDevice?> = MutableLiveData(null)
    val peerToConnect: LiveData<WifiP2pDevice?> = _peerToConnect
    val messageQueue: Channel<TransferPacket> = Channel()
    fun setStep(step: TransferStep) {
        Log.d("PUPILD", "Set step: $step")
        _step.value = step
    }
    fun setWifiP2pEnabled(enabled: Boolean) {
        _wifiP2pEnabled.value = enabled
    }
    fun setThisDevice(device: WifiP2pDevice?) {
        _thisDevice.value = device
    }
    fun setPeers(peers: WifiP2pDeviceList?) {
        _peers.value = peers
    }
    fun setConnectionInfo(info: WifiP2pInfo?) {
        _connectionInfo.value = info
    }
    fun setError(error: ErrorType?) {
        _error.value = error
    }
    fun connect(device: WifiP2pDevice?) {
        _peerToConnect.value = device
    }
    fun ping() {
        messageQueue.trySend(TransferPacket.Ping)
    }
    fun list() {
        messageQueue.trySend(TransferPacket.ListRequest)
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/dialog/DefaultQueryDialog.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/dialog/DefaultQueryDialog.kt
@@ -18,76 +18,46 @@
 package xyz.quaver.pupil.ui.dialog
 import android.annotation.SuppressLint
 import android.app.Dialog
 import android.content.Context
 import android.os.Bundle
 import android.text.Editable
 import android.text.TextWatcher
 import android.view.LayoutInflater
 import android.view.View
 import android.widget.ArrayAdapter
 import androidx.appcompat.app.AlertDialog
-import androidx.preference.PreferenceManager
+import androidx.fragment.app.DialogFragment
 import kotlinx.android.synthetic.main.dialog_default_query.*
 import kotlinx.android.synthetic.main.dialog_default_query.view.*
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.databinding.DefaultQueryDialogBinding
 import xyz.quaver.pupil.types.Tags
 import xyz.quaver.pupil.util.Preferences
-class DefaultQueryDialog(context : Context) : AlertDialog(context) {
+class DefaultQueryDialog : DialogFragment() {
-    private val languages = context.resources.getStringArray(R.array.languages).map {
+    private val languages: Map<String, String> by lazy {
        requireContext().resources.getStringArray(R.array.languages).map {
            it.split("|").let { split ->
                Pair(split[0], split[1])
            }
        }.toMap()
-    private val reverseLanguages = languages.entries.associate { (k, v) -> v to k }
+    }
    private val reverseLanguages: Map<String, String> by lazy {
        languages.entries.associate { (k, v) -> v to k }
    }
    private val excludeBL = "-male:yaoi"
    private val excludeGuro = listOf("-female:guro", "-male:guro")
-
+    private val excludeLoli = listOf("-female:loli", "-male:shota")
    private lateinit var dialogView : View
    var onPositiveButtonClickListener : ((Tags) -> (Unit))? = null
-    @SuppressLint("InflateParams")
+    private var _binding: DefaultQueryDialogBinding? = null
-    override fun onCreate(savedInstanceState: Bundle?) {
+    private val binding get() = _binding!!
        initDialog()
-        setTitle(R.string.default_query_dialog_title)
+    private fun initView() {
        setView(dialogView)
        setButton(Dialog.BUTTON_POSITIVE, context.getString(android.R.string.ok)) { _, _ ->
            val newTags = Tags.parse(default_query_dialog_edittext.text.toString())
            with(default_query_dialog_language_selector) {
                if (selectedItemPosition != 0)
                    newTags.add("language:${reverseLanguages[selectedItem]}")
            }
            if (default_query_dialog_BL_checkbox.isChecked)
                newTags.add(excludeBL)
            if (default_query_dialog_guro_checkbox.isChecked)
                excludeGuro.forEach { tag ->
                    newTags.add(tag)
                }
            onPositiveButtonClickListener?.invoke(newTags)
        }
        super.onCreate(savedInstanceState)
    }
    @SuppressLint("InflateParams")
    private fun initDialog() {
        val preferences = PreferenceManager.getDefaultSharedPreferences(context)
        val tags = Tags.parse(
-            preferences.getString("default_query", "") ?: ""
+            Preferences["default_query"]
        )
-        dialogView = LayoutInflater.from(context).inflate(R.layout.dialog_default_query, null)
+        with(binding.languageSelector) {
        with(dialogView.default_query_dialog_language_selector) {
            adapter =
                ArrayAdapter(
                    context,
@@ -110,13 +80,13 @@ class DefaultQueryDialog(context : Context) : AlertDialog(context) {
            }
        }
-        with(dialogView.default_query_dialog_BL_checkbox) {
+        with(binding.BLCheckbox) {
            isChecked = tags.contains(excludeBL)
            if (tags.contains(excludeBL))
                tags.remove(excludeBL)
        }
-        with(dialogView.default_query_dialog_guro_checkbox) {
+        with(binding.guroCheckbox) {
            isChecked = excludeGuro.all { tags.contains(it) }
            if (excludeGuro.all { tags.contains(it) })
                excludeGuro.forEach {
@@ -124,7 +94,15 @@ class DefaultQueryDialog(context : Context) : AlertDialog(context) {
                }
        }
-        with(dialogView.default_query_dialog_edittext) {
+        with(binding.loliCheckbox) {
            isChecked = excludeLoli.all { tags.contains(it) }
            if (excludeLoli.all { tags.contains(it) })
                excludeLoli.forEach {
                    tags.remove(it)
                }
        }
        with(binding.edittext) {
            setText(tags.toString(), android.widget.TextView.BufferType.EDITABLE)
            addTextChangedListener(object : TextWatcher {
                override fun beforeTextChanged(
@@ -151,4 +129,43 @@ class DefaultQueryDialog(context : Context) : AlertDialog(context) {
        }
    }
    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        _binding = DefaultQueryDialogBinding.inflate(layoutInflater)
        initView()
        return AlertDialog.Builder(requireContext()).apply {
            setTitle(R.string.default_query_dialog_title)
            setView(binding.root)
            setPositiveButton(android.R.string.ok) { _, _ ->
                val newTags = Tags.parse(binding.edittext.text.toString())
                with(binding.languageSelector) {
                    if (selectedItemPosition != 0)
                        newTags.add("language:${reverseLanguages[selectedItem]}")
                }
                if (binding.BLCheckbox.isChecked)
                    newTags.add(excludeBL)
                if (binding.guroCheckbox.isChecked)
                    excludeGuro.forEach { tag ->
                        newTags.add(tag)
                    }
                if (binding.loliCheckbox.isChecked)
                    excludeLoli.forEach { tag ->
                        newTags.add(tag)
                    }
                onPositiveButtonClickListener?.invoke(newTags)
            }
        }.create()
    }
    override fun onDestroy() {
        super.onDestroy()
        _binding = null
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/dialog/DownloadFolderNameDialogFragment.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/dialog/DownloadFolderNameDialogFragment.kt
@@ -0,0 +1,85 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.ui.dialog
 import android.app.Dialog
 import android.os.Bundle
 import android.view.ViewGroup
 import androidx.core.widget.addTextChangedListener
 import androidx.fragment.app.DialogFragment
 import com.google.android.material.snackbar.Snackbar
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.databinding.DownloadFolderNameDialogBinding
 import xyz.quaver.pupil.util.Preferences
 import xyz.quaver.pupil.util.downloader.Cache
 import xyz.quaver.pupil.util.formatDownloadFolder
 import xyz.quaver.pupil.util.formatDownloadFolderTest
 import xyz.quaver.pupil.util.formatMap
 class DownloadFolderNameDialogFragment : DialogFragment() {
    private var _binding: DownloadFolderNameDialogBinding? = null
    private val binding get() = _binding!!
    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        _binding = DownloadFolderNameDialogBinding.inflate(layoutInflater)
        initView()
        return Dialog(requireContext()).apply {
            setContentView(binding.root)
            window?.attributes?.width = ViewGroup.LayoutParams.MATCH_PARENT
        }
    }
    override fun onDestroy() {
        super.onDestroy()
        _binding = null
    }
    private fun initView() {
        val galleryID = Cache.instances.let { if (it.size == 0) 1199708 else it.keys.elementAt((0 until it.size).random()) }
        CoroutineScope(Dispatchers.IO).launch {
            val galleryBlock = Cache.getInstance(requireContext(), galleryID).getGalleryBlock()
            binding.message.text = getString(R.string.settings_download_folder_name_message, formatMap.keys.toString(), galleryBlock?.formatDownloadFolder() ?: "")
            binding.edittext.addTextChangedListener {
                binding.message.text = requireContext().getString(R.string.settings_download_folder_name_message, formatMap.keys.toString(), galleryBlock?.formatDownloadFolderTest(it.toString()) ?: "")
            }
        }
        binding.edittext.setText(Preferences["download_folder_name", "[-id-] -title-"])
        binding.okButton.setOnClickListener {
            val newValue = binding.edittext.text.toString()
            if ((newValue as? String)?.contains("/") != false) {
                Snackbar.make(binding.root, R.string.settings_invalid_download_folder_name, Snackbar.LENGTH_SHORT).show()
                return@setOnClickListener
            }
            Preferences["download_folder_name"] = binding.edittext.text.toString()
            dismiss()
        }
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/dialog/DownloadLocationDialog.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/dialog/DownloadLocationDialog.kt
@@ -1,130 +0,0 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.ui.dialog
 import android.annotation.SuppressLint
 import android.app.Activity
 import android.app.Dialog
 import android.content.Intent
 import android.net.Uri
 import android.os.Build
 import android.os.Bundle
 import android.widget.LinearLayout
 import android.widget.RadioButton
 import androidx.appcompat.app.AlertDialog
 import androidx.core.content.ContextCompat
 import androidx.preference.PreferenceManager
 import kotlinx.android.synthetic.main.item_dl_location.view.*
 import net.rdrei.android.dirchooser.DirectoryChooserActivity
 import net.rdrei.android.dirchooser.DirectoryChooserConfig
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.util.REQUEST_DOWNLOAD_FOLDER
 import xyz.quaver.pupil.util.REQUEST_DOWNLOAD_FOLDER_OLD
 import xyz.quaver.pupil.util.byteToString
@SuppressLint("InflateParams")
 class DownloadLocationDialog(val activity: Activity) : AlertDialog(activity) {
    private val preference = PreferenceManager.getDefaultSharedPreferences(context)
    private val buttons = mutableListOf<Pair<RadioButton, Uri?>>()
    override fun onCreate(savedInstanceState: Bundle?) {
        val view = layoutInflater.inflate(R.layout.dialog_dl_location, null) as LinearLayout
        val externalFilesDirs = ContextCompat.getExternalFilesDirs(context, null)
        externalFilesDirs.forEachIndexed { index, dir ->
            dir ?: return@forEachIndexed
            view.addView(layoutInflater.inflate(R.layout.item_dl_location, view, false).apply {
                location_type.text = context.getString(when (index) {
                    0 -> R.string.settings_dl_location_internal
                    else -> R.string.settings_dl_location_removable
                })
                location_available.text = context.getString(
                    R.string.settings_dl_location_available,
                    byteToString(dir.freeSpace)
                )
                setOnClickListener {
                    buttons.forEach { pair ->
                        pair.first.isChecked = false
                    }
                    button.performClick()
                    preference.edit().putString("dl_location", Uri.fromFile(dir).toString()).apply()
                }
                buttons.add(button to Uri.fromFile(dir))
            })
        }
        view.addView(layoutInflater.inflate(R.layout.item_dl_location, view, false).apply {
            location_type.text = context.getString(R.string.settings_dl_location_custom)
            setOnClickListener {
                buttons.forEach { pair ->
                    pair.first.isChecked = false
                }
                button.performClick()
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                    val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE).apply {
                        putExtra("android.content.extra.SHOW_ADVANCED", true)
                    }
                    activity.startActivityForResult(intent, REQUEST_DOWNLOAD_FOLDER)
                    dismiss()
                } else {    // Can't use SAF on old Androids!
                    val config = DirectoryChooserConfig.builder()
                        .newDirectoryName("Pupil")
                        .allowNewDirectoryNameModification(true)
                        .build()
                    val intent = Intent(context, DirectoryChooserActivity::class.java).apply {
                        putExtra(DirectoryChooserActivity.EXTRA_CONFIG, config)
                    }
                    activity.startActivityForResult(intent, REQUEST_DOWNLOAD_FOLDER_OLD)
                    dismiss()
                }
            }
            buttons.add(button to null)
        })
        val pref = Uri.parse(preference.getString("dl_location", null))
        val index = externalFilesDirs.indexOfFirst {
            Uri.fromFile(it).toString() == pref.toString()
        }
        if (index < 0)
            buttons.last().first.isChecked = true
        else
            buttons[index].first.isChecked = true
        setTitle(R.string.settings_dl_location)
        setView(view)
        setButton(Dialog.BUTTON_POSITIVE, context.getText(android.R.string.ok)) { _, _ ->
            dismiss()
        }
        super.onCreate(savedInstanceState)
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/dialog/DownloadLocationDialogFragment.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/dialog/DownloadLocationDialogFragment.kt
@@ -0,0 +1,199 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.ui.dialog
 import android.app.Activity
 import android.app.Dialog
 import android.content.Intent
 import android.os.Build
 import android.os.Bundle
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AlertDialog
 import androidx.core.content.ContextCompat
 import androidx.core.net.toUri
 import androidx.fragment.app.DialogFragment
 import com.google.android.material.snackbar.Snackbar
 import net.rdrei.android.dirchooser.DirectoryChooserActivity
 import net.rdrei.android.dirchooser.DirectoryChooserConfig
 import xyz.quaver.io.FileX
 import xyz.quaver.io.util.toFile
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.databinding.DownloadLocationDialogBinding
 import xyz.quaver.pupil.databinding.DownloadLocationItemBinding
 import xyz.quaver.pupil.util.Preferences
 import xyz.quaver.pupil.util.byteToString
 import xyz.quaver.pupil.util.downloader.DownloadManager
 import java.io.File
 class DownloadLocationDialogFragment : DialogFragment() {
    private var _binding: DownloadLocationDialogBinding? = null
    private val binding get() = _binding!!
    private val entries = mutableMapOf<File?, DownloadLocationItemBinding>()
    private val requestDownloadFolderLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
        if (it.resultCode == Activity.RESULT_OK) {
            val context = context ?: return@registerForActivityResult
            val dialog = dialog ?: return@registerForActivityResult
            it.data?.data?.also { uri ->
                val takeFlags: Int = Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT)
                    context.contentResolver.takePersistableUriPermission(uri, takeFlags)
                if (kotlin.runCatching { FileX(context, uri).canWrite() }.getOrDefault(false)) {
                    entries[null]?.locationAvailable?.text = uri.toFile(context)?.canonicalPath
                    Preferences["download_folder"] = uri.toString()
                } else {
                    Snackbar.make(
                        dialog.window!!.decorView.rootView,
                        R.string.settings_download_folder_not_writable,
                        Snackbar.LENGTH_LONG
                    ).show()
                    val downloadFolder = DownloadManager.getInstance(context).downloadFolder.canonicalPath
                    val key = entries.keys.firstOrNull { it?.canonicalPath == downloadFolder }
                    entries[key]!!.button.isChecked = true
                    if (key == null) entries[key]!!.locationAvailable.text = downloadFolder
                }
            }
        } else {
            val downloadFolder = DownloadManager.getInstance(context ?: return@registerForActivityResult).downloadFolder.canonicalPath
            val key = entries.keys.firstOrNull { it?.canonicalPath == downloadFolder }
            if (key == null)
                entries[key]!!.locationAvailable.text = downloadFolder
            else {
                entries[null]!!.button.isChecked = false
                entries[key]!!.button.isChecked = true
            }
        }
    }
    private val requestDownloadFolderOldLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
        val context = context ?: return@registerForActivityResult
        val dialog = dialog ?: return@registerForActivityResult
        if (it.resultCode == DirectoryChooserActivity.RESULT_CODE_DIR_SELECTED) {
            val directory = it.data?.getStringExtra(DirectoryChooserActivity.RESULT_SELECTED_DIR)!!
            if (!File(directory).canWrite()) {
                Snackbar.make(
                    dialog.window!!.decorView.rootView,
                    R.string.settings_download_folder_not_writable,
                    Snackbar.LENGTH_LONG
                ).show()
                val downloadFolder = DownloadManager.getInstance(context).downloadFolder.canonicalPath
                val key = entries.keys.firstOrNull { it?.canonicalPath == downloadFolder }
                entries[key]!!.button.isChecked = true
                if (key == null) entries[key]!!.locationAvailable.text = downloadFolder
            }
            else {
                entries[null]?.locationAvailable?.text = directory
                Preferences["download_folder"] = File(directory).toURI().toString()
            }
        }
    }
    private fun initView() {
        val externalFilesDirs = ContextCompat.getExternalFilesDirs(requireContext(), null)
        externalFilesDirs.forEachIndexed { index, dir ->
            dir ?: return@forEachIndexed
            DownloadLocationItemBinding.inflate(layoutInflater, binding.root, true).apply {
                locationType.text = requireContext().getString(when (index) {
                    0 -> R.string.settings_download_folder_internal
                    else -> R.string.settings_download_folder_removable
                })
                locationAvailable.text = requireContext().getString(
                    R.string.settings_download_folder_available,
                    byteToString(dir.freeSpace)
                )
                root.setOnClickListener {
                    entries.values.forEach { entry ->
                        entry.button.isChecked = false
                    }
                    button.performClick()
                    Preferences["download_folder"] = dir.toUri().toString()
                }
                entries[dir] = this
            }
        }
        DownloadLocationItemBinding.inflate(layoutInflater, binding.root, true).apply {
            locationType.text = requireContext().getString(R.string.settings_download_folder_custom)
            root.setOnClickListener {
                entries.values.forEach { entry ->
                    entry.button.isChecked = false
                }
                button.performClick()
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                    val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE).apply {
                        putExtra("android.content.extra.SHOW_ADVANCED", true)
                    }
                    requestDownloadFolderLauncher.launch(intent)
                } else {    // Can't use SAF on old Androids!
                    val config = DirectoryChooserConfig.builder()
                        .newDirectoryName("Pupil")
                        .allowNewDirectoryNameModification(true)
                        .build()
                    val intent = Intent(context, DirectoryChooserActivity::class.java).apply {
                        putExtra(DirectoryChooserActivity.EXTRA_CONFIG, config)
                    }
                    requestDownloadFolderOldLauncher.launch(intent)
                }
            }
            entries[null] = this
        }
        val downloadFolder = DownloadManager.getInstance(requireContext()).downloadFolder.canonicalPath
        val key = entries.keys.firstOrNull { it?.canonicalPath == downloadFolder }
        entries[key]!!.button.isChecked = true
        if (key == null) entries[key]!!.locationAvailable.text = downloadFolder
    }
    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        _binding = DownloadLocationDialogBinding.inflate(layoutInflater)
        initView()
        return AlertDialog.Builder(requireContext()).apply {
            setTitle(R.string.settings_download_folder)
            setView(binding.root)
            setPositiveButton(requireContext().getText(android.R.string.ok)) { _, _ ->
                if (Preferences["download_folder", ""].isEmpty())
                    Preferences["download_folder"] = context.getExternalFilesDir(null)?.toUri()?.toString() ?: ""
            }
            isCancelable = false
        }.create()
    }
    override fun onDestroy() {
        super.onDestroy()
        _binding = null
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/dialog/GalleryDialog.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/dialog/GalleryDialog.kt
@@ -18,56 +18,49 @@
 package xyz.quaver.pupil.ui.dialog
 import android.app.Dialog
 import android.content.Context
 import android.content.Intent
 import android.net.Uri
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.LinearLayout.LayoutParams
 import androidx.appcompat.app.AlertDialog
 import androidx.core.content.ContextCompat
 import androidx.recyclerview.widget.GridLayoutManager
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
-import com.bumptech.glide.Glide
+import androidx.viewpager2.widget.ViewPager2
 import com.google.android.material.chip.Chip
 import com.google.android.material.snackbar.Snackbar
 import kotlinx.android.synthetic.main.dialog_gallery.*
 import kotlinx.android.synthetic.main.gallery_details.view.*
 import kotlinx.android.synthetic.main.item_gallery_details.view.*
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.async
 import kotlinx.coroutines.launch
-import xyz.quaver.hitomi.Gallery
+import kotlinx.coroutines.withContext
-import xyz.quaver.hitomi.GalleryBlock
+import xyz.quaver.pupil.hitomi.Gallery
-import xyz.quaver.hitomi.getGallery
+import xyz.quaver.pupil.hitomi.getGallery
 import xyz.quaver.pupil.BuildConfig
 import xyz.quaver.pupil.Pupil
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.adapters.GalleryBlockAdapter
-import xyz.quaver.pupil.adapters.ThumbnailAdapter
+import xyz.quaver.pupil.adapters.ThumbnailPageAdapter
 import xyz.quaver.pupil.databinding.*
 import xyz.quaver.pupil.favoriteTags
 import xyz.quaver.pupil.types.Tag
 import xyz.quaver.pupil.ui.ReaderActivity
 import xyz.quaver.pupil.ui.view.TagChip
 import xyz.quaver.pupil.util.ItemClickSupport
-import xyz.quaver.pupil.util.download.Cache
+import xyz.quaver.pupil.util.downloader.Cache
 import xyz.quaver.pupil.util.wordCapitalize
 import java.util.*
 import kotlin.collections.ArrayList
-class GalleryDialog(context: Context, private val galleryID: Int) : Dialog(context) {
+class GalleryDialog(context: Context, private val galleryID: Int) : AlertDialog(context) {
    private val languages = context.resources.getStringArray(R.array.languages).map {
        it.split("|").let { split ->
            Pair(split[0], split[1])
        }
    }.toMap()
    private val glide = Glide.with(context)
    val onChipClickedHandler = ArrayList<((Tag) -> (Unit))>()
    private lateinit var binding: GalleryDialogBinding
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
-        setContentView(R.layout.dialog_gallery)
+        binding = GalleryDialogBinding.inflate(layoutInflater)
        setContentView(binding.root)
        window?.attributes.apply {
            this ?: return@apply
@@ -76,13 +69,12 @@ class GalleryDialog(context: Context, private val galleryID: Int) : Dialog(conte
            height = LayoutParams.MATCH_PARENT
        }
-        with(gallery_fab) {
+        with(binding.fab) {
            setImageDrawable(ContextCompat.getDrawable(context, R.drawable.arrow_right))
            setOnClickListener {
                context.startActivity(Intent(context, ReaderActivity::class.java).apply {
                    putExtra("galleryID", galleryID)
                })
                (context.applicationContext as Pupil).histories.add(galleryID)
            }
        }
@@ -91,11 +83,11 @@ class GalleryDialog(context: Context, private val galleryID: Int) : Dialog(conte
                val gallery = getGallery(galleryID)
                launch (Dispatchers.Main) {
-                    gallery_progressbar.visibility = View.GONE
+                    binding.progressbar.visibility = View.GONE
-                    gallery_title.text = gallery.title
+                    binding.title.text = gallery.title
-                    gallery_artist.text = gallery.artists.joinToString(", ") { it.wordCapitalize() }
+                    binding.artist.text = gallery.artists.joinToString(", ") { it.wordCapitalize() }
-                    with(gallery_type) {
+                    with(binding.type) {
                        text = gallery.type.wordCapitalize()
                        setOnClickListener {
                            gallery.type.let {
@@ -112,28 +104,26 @@ class GalleryDialog(context: Context, private val galleryID: Int) : Dialog(conte
                        }
                    }
-                    Glide.with(context)
+                    binding.cover.showImage(Uri.parse(gallery.cover))
                        .load(gallery.cover)
                        .apply {
                            if (BuildConfig.CENSOR)
                                override(5, 8)
                        }.into(gallery_cover)
                    addDetails(gallery)
                    addThumbnails(gallery)
                    addRelated(gallery)
                }
            } catch (e: Exception) {
-                Snackbar.make(gallery_layout, R.string.unable_to_connect, Snackbar.LENGTH_INDEFINITE).show()
+                Snackbar.make(binding.root, R.string.unable_to_connect, Snackbar.LENGTH_INDEFINITE).apply {
                    if (Locale.getDefault().language == "ko")
                        setAction(context.getText(R.string.https_text)) {
                            context.startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(context.getString(R.string.https))))
                        }
                }.show()
            }
        }
    }
    private fun addDetails(gallery: Gallery) {
-        val inflater = LayoutInflater.from(context)
+        GalleryDialogDetailsBinding.inflate(layoutInflater, binding.contents, true).apply {
-        
+            type.setText(R.string.gallery_details)
        inflater.inflate(R.layout.gallery_details, gallery_contents, false).apply {
            gallery_details.setText(R.string.gallery_details)
            listOf(
                R.string.gallery_artists,
@@ -149,7 +139,18 @@ class GalleryDialog(context: Context, private val galleryID: Int) : Dialog(conte
                    listOf(gallery.language).map { Tag("language", it) },
                    gallery.series.map { Tag("series", it) },
                    gallery.characters.map { Tag("character", it) },
-                    gallery.tags.map {
+                    gallery.tags.sortedBy {
                        val tag = Tag.parse(it)
                        if (favoriteTags.contains(tag))
                            -1
                        else
                            when(Tag.parse(it).area) {
                                "female" -> 0
                                "male" -> 1
                                else -> 2
                            }
                    }.map {
                        Tag.parse(it).let { tag ->
                            when {
                                tag.area != null -> tag
@@ -161,33 +162,12 @@ class GalleryDialog(context: Context, private val galleryID: Int) : Dialog(conte
            ).filter {
                    (_, content) -> content.isNotEmpty()
            }.forEach { (title, content) ->
-                inflater.inflate(R.layout.item_gallery_details, gallery_details_contents, false).apply {
+                GalleryDialogTagsBinding.inflate(layoutInflater, contents, true).apply {
-                    gallery_details_type.setText(title)
+                    type.setText(title)
                    content.forEach { tag ->
-                        gallery_details_tags.addView(
+                        tags.addView(
-                            Chip(context).apply {
+                            TagChip(context, tag).apply {
                                chipIcon = when(tag.area) {
                                    "male" -> {
                                        setChipBackgroundColorResource(R.color.material_blue_700)
                                        setTextColor(ContextCompat.getColor(context, android.R.color.white))
                                        ContextCompat.getDrawable(context, R.drawable.ic_gender_male_white)
                                    }
                                    "female" -> {
                                        setChipBackgroundColorResource(R.color.material_pink_600)
                                        setTextColor(ContextCompat.getColor(context, android.R.color.white))
                                        ContextCompat.getDrawable(context, R.drawable.ic_gender_female_white)
                                    }
                                    else -> null
                                }
                                text = when (tag.area) {
                                    "language" -> languages[tag.tag]
                                    else -> tag.tag.wordCapitalize()
                                }
                                setEnsureMinTouchTargetSize(false)
                                setOnClickListener {
                                    onChipClickedHandler.forEach { handler ->
                                        handler.invoke(tag)
@@ -196,37 +176,36 @@ class GalleryDialog(context: Context, private val galleryID: Int) : Dialog(conte
                            }
                        )
                    }
                }.let {
                    gallery_details_contents.addView(it)
                }
            }
        }.let {
            gallery_contents.addView(it)
        }
    }
    private fun addThumbnails(gallery: Gallery) {
-        val inflater = LayoutInflater.from(context)
+        GalleryDialogDetailsBinding.inflate(layoutInflater, binding.contents, true).apply {
            type.setText(R.string.gallery_thumbnails)
-        inflater.inflate(R.layout.gallery_details, gallery_contents, false).apply {
+            val pager = ViewPager2(context).apply {
-            gallery_details.setText(R.string.gallery_thumbnails)
+                adapter = ThumbnailPageAdapter(gallery.thumbnails)
-
+                layoutParams = ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT)
-            RecyclerView(context).apply {
+            }
-                layoutManager = GridLayoutManager(context, 3)
+
-                adapter = ThumbnailAdapter(glide, gallery.thumbnails)
+            contents.addView(
-            }.let {
+                pager,
-                gallery_details_contents.addView(it, LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT))
+                LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT)
            )
            // TODO: Change to direct allocation
            GalleryDialogDotindicatorBinding.inflate(layoutInflater, contents, true).apply {
                dotindicator.setViewPager2(pager)
            }
        }.let {
            gallery_contents.addView(it)
        }
    }
    private fun addRelated(gallery: Gallery) {
-        val inflater = LayoutInflater.from(context)
+        val galleries = mutableListOf<Int>()
        val galleries = ArrayList<GalleryBlock>()
-        val adapter = GalleryBlockAdapter(context, galleries).apply {
+        val adapter = GalleryBlockAdapter(galleries).apply {
            onChipClickedHandler.add { tag ->
                this@GalleryDialog.onChipClickedHandler.forEach { handler ->
                    handler.invoke(tag)
@@ -234,38 +213,21 @@ class GalleryDialog(context: Context, private val galleryID: Int) : Dialog(conte
            }
        }
-        CoroutineScope(Dispatchers.Main).launch {
+        GalleryDialogDetailsBinding.inflate(layoutInflater, binding.contents, true).apply {
-            gallery.related.forEachIndexed { i, galleryID ->
+            type.setText(R.string.gallery_related)
                async(Dispatchers.IO) {
                    Cache(context).getGalleryBlock(galleryID)
                }.let {
                    val galleryBlock = it.await() ?: return@let
-                    galleries.add(galleryBlock)
+            contents.addView(RecyclerView(context).apply {
                    adapter.notifyItemInserted(i)
                }
            }
        }
        inflater.inflate(R.layout.gallery_details, gallery_contents, false).apply {
            gallery_details.setText(R.string.gallery_related)
            RecyclerView(context).apply {
                layoutManager = LinearLayoutManager(context)
                this.adapter = adapter
-                ItemClickSupport.addTo(this)
+                ItemClickSupport.addTo(this).apply {
-                    .setOnItemClickListener { _, position, _ ->
+                    onItemClickListener = { _, position, _ ->
                        context.startActivity(Intent(context, ReaderActivity::class.java).apply {
-                            putExtra("galleryID", galleries[position].id)
+                            putExtra("galleryID", galleries[position])
                        })
                        (context.applicationContext as Pupil).histories.add(galleries[position].id)
                    }
-                    .setOnItemLongClickListener { _, position, _ ->
+                    onItemLongClickListener = { _, position, _ ->
-                        GalleryDialog(
+                        GalleryDialog(context, galleries[position]).apply {
                            context,
                            galleries[position].id
                        ).apply {
                            onChipClickedHandler.add { tag ->
                                this@GalleryDialog.onChipClickedHandler.forEach { it.invoke(tag) }
                            }
@@ -273,11 +235,20 @@ class GalleryDialog(context: Context, private val galleryID: Int) : Dialog(conte
                        true
                    }
            }.let {
                gallery_details_contents.addView(it, LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT))
                }
-        }.let {
+            })
-            gallery_contents.addView(it)
+
            CoroutineScope(Dispatchers.IO).launch {
                gallery.related.forEach { galleryID ->
                    Cache.getInstance(context, galleryID).getGalleryBlock()?.let {
                        galleries.add(galleryID)
                    }
                }
                withContext(Dispatchers.Main) {
                    adapter.notifyDataSetChanged()
                }
            }
        }
    }
--- a/app/src/main/java/xyz/quaver/pupil/ui/dialog/MirrorDialog.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/dialog/MirrorDialog.kt
@@ -1,97 +0,0 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.ui.dialog
 import android.annotation.SuppressLint
 import android.app.Dialog
 import android.content.Context
 import android.os.Bundle
 import androidx.appcompat.app.AlertDialog
 import androidx.preference.PreferenceManager
 import androidx.recyclerview.widget.DividerItemDecoration
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.adapters.MirrorAdapter
 class MirrorDialog(context: Context) : AlertDialog(context) {
    class ItemTouchHelperCallback : ItemTouchHelper.Callback() {
        var onMoveItem : ((Int, Int) -> (Unit))? = null
        override fun getMovementFlags(
            recyclerView: RecyclerView,
            viewHolder: RecyclerView.ViewHolder
        ) = makeMovementFlags(ItemTouchHelper.UP or ItemTouchHelper.DOWN, 0)
        override fun onMove(
            recyclerView: RecyclerView,
            viewHolder: RecyclerView.ViewHolder,
            target: RecyclerView.ViewHolder
        ): Boolean {
            onMoveItem?.invoke(viewHolder.adapterPosition, target.adapterPosition)
            return true
        }
        override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {
        }
    }
    private lateinit var recyclerView: RecyclerView
    @SuppressLint("InflateParams")
    override fun onCreate(savedInstanceState: Bundle?) {
        initDialog()
        setTitle(R.string.settings_mirror_title)
        setView(recyclerView)
        setButton(Dialog.BUTTON_POSITIVE, context.getString(android.R.string.ok)) { _, _ -> }
        super.onCreate(savedInstanceState)
    }
    private fun initDialog() {
        recyclerView = RecyclerView(context).apply recyclerview@{
            addItemDecoration(DividerItemDecoration(context, DividerItemDecoration.VERTICAL))
            layoutManager = LinearLayoutManager(context)
            adapter = MirrorAdapter(context).apply adapter@{
                val itemTouchHelper = ItemTouchHelper(ItemTouchHelperCallback().apply {
                    onMoveItem = this@adapter.onItemMove
                }).apply {
                    attachToRecyclerView(this@recyclerview)
                }
                onStartDrag = {
                    itemTouchHelper.startDrag(it)
                }
                onItemMoved = {
                    PreferenceManager.getDefaultSharedPreferences(context)
                        .edit()
                        .putString("mirrors", it.joinToString(">"))
                        .apply()
                }
            }
        }
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/dialog/ProxyDialogFragment.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/dialog/ProxyDialogFragment.kt
@@ -0,0 +1,133 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.ui.dialog
 import android.app.Dialog
 import android.content.Context
 import android.os.Bundle
 import android.view.View
 import android.widget.AdapterView
 import android.widget.ArrayAdapter
 import androidx.appcompat.app.AlertDialog
 import androidx.fragment.app.DialogFragment
 import kotlinx.serialization.encodeToString
 import kotlinx.serialization.json.Json
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.client
 import xyz.quaver.pupil.clientBuilder
 import xyz.quaver.pupil.clientHolder
 import xyz.quaver.pupil.databinding.ProxyDialogBinding
 import xyz.quaver.pupil.util.Preferences
 import xyz.quaver.pupil.util.ProxyInfo
 import xyz.quaver.pupil.util.getProxyInfo
 import xyz.quaver.pupil.util.proxyInfo
 import java.net.Proxy
 class ProxyDialogFragment : DialogFragment() {
    private var _binding: ProxyDialogBinding? = null
    private val binding get() = _binding!!
    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        _binding = ProxyDialogBinding.inflate(layoutInflater)
        initView()
        return AlertDialog.Builder(requireContext()).apply {
            setView(binding.root)
        }.create()
    }
    private fun initView() {
        val proxyInfo = getProxyInfo()
        val enabler = { enable: Boolean ->
            binding.addr.isEnabled = enable
            binding.port.isEnabled = enable
            binding.username.isEnabled = enable
            binding.password.isEnabled = enable
            if (!enable) {
                binding.addr.text = null
                binding.port.text = null
                binding.username.text = null
                binding.password.text = null
            }
        }
        with(binding.typeSelector) {
            adapter = ArrayAdapter(
                context,
                android.R.layout.simple_spinner_dropdown_item,
                context.resources.getStringArray(R.array.proxy_type)
            )
            setSelection(proxyInfo.type.ordinal)
            onItemSelectedListener = object: AdapterView.OnItemSelectedListener {
                override fun onItemSelected(parent: AdapterView<*>?, view: View?, position: Int, id: Long) {
                    enabler.invoke(position != 0)
                }
                override fun onNothingSelected(parent: AdapterView<*>?) {}
            }
        }
        binding.addr.setText(proxyInfo.host)
        binding.port.setText(proxyInfo.port?.toString())
        binding.username.setText(proxyInfo.username)
        binding.password.setText(proxyInfo.password)
        enabler.invoke(proxyInfo.type != Proxy.Type.DIRECT)
        binding.cancelButton.setOnClickListener {
            dismiss()
        }
        binding.okButton.setOnClickListener {
            val type = Proxy.Type.values()[binding.typeSelector.selectedItemPosition]
            val addr = binding.addr.text?.toString()
            val port = binding.port.text?.toString()?.toIntOrNull()
            val username = binding.username.text?.toString()
            val password = binding.password.text?.toString()
            if (type != Proxy.Type.DIRECT) {
                if (addr == null || addr.isEmpty())
                    binding.addr.error = requireContext().getText(R.string.proxy_dialog_error)
                if (port == null)
                    binding.port.error = requireContext().getText(R.string.proxy_dialog_error)
                if (addr == null || addr.isEmpty() || port == null)
                    return@setOnClickListener
            }
            ProxyInfo(type, addr, port, username, password).let {
                Preferences["proxy"] = Json.encodeToString(it)
                clientBuilder
                    .proxyInfo(it)
                clientHolder = null
                client
            }
            dismiss()
        }
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/fragment/LockFragment.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/fragment/LockFragment.kt
@@ -1,81 +0,0 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.ui.fragment
 import android.content.Intent
 import android.os.Bundle
 import androidx.appcompat.app.AlertDialog
 import androidx.preference.Preference
 import androidx.preference.PreferenceFragmentCompat
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.ui.LockActivity
 import xyz.quaver.pupil.util.Lock
 import xyz.quaver.pupil.util.LockManager
 class LockFragment : PreferenceFragmentCompat() {
    override fun onResume() {
        super.onResume()
        val lockManager = LockManager(context!!)
        findPreference<Preference>("lock_pattern")?.summary =
            if (lockManager.contains(Lock.Type.PATTERN))
                getString(R.string.settings_lock_enabled)
            else
                ""
    }
    override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
        setPreferencesFromResource(R.xml.lock_preferences, rootKey)
        with(findPreference<Preference>("lock_pattern")) {
            this!!
            if (LockManager(context!!).contains(Lock.Type.PATTERN))
                summary = getString(R.string.settings_lock_enabled)
            onPreferenceClickListener = Preference.OnPreferenceClickListener {
                val lockManager = LockManager(context!!)
                if (lockManager.contains(Lock.Type.PATTERN)) {
                    AlertDialog.Builder(context).apply {
                        setTitle(R.string.warning)
                        setMessage(R.string.settings_lock_remove_message)
                        setPositiveButton(android.R.string.yes) { _, _ ->
                            lockManager.remove(Lock.Type.PATTERN)
                            onResume()
                        }
                        setNegativeButton(android.R.string.no) { _, _ -> }
                    }.show()
                } else {
                    val intent = Intent(context, LockActivity::class.java).apply {
                        putExtra("mode", "add_lock")
                        putExtra("type", "pattern")
                    }
                    startActivity(intent)
                }
                true
            }
        }
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/fragment/LockSettingsFragment.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/fragment/LockSettingsFragment.kt
@@ -0,0 +1,146 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.ui.fragment
 import android.content.Intent
 import android.os.Bundle
 import android.widget.Toast
 import androidx.appcompat.app.AlertDialog
 import androidx.preference.Preference
 import androidx.preference.PreferenceFragmentCompat
 import androidx.preference.SwitchPreferenceCompat
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.ui.LockActivity
 import xyz.quaver.pupil.util.Lock
 import xyz.quaver.pupil.util.LockManager
 import xyz.quaver.pupil.util.Preferences
 class LockSettingsFragment : PreferenceFragmentCompat() {
    override fun onResume() {
        super.onResume()
        val lockManager = LockManager(requireContext())
        findPreference<Preference>("lock_pattern")?.summary =
            if (lockManager.contains(Lock.Type.PATTERN))
                getString(R.string.settings_lock_enabled)
            else
                ""
        findPreference<Preference>("lock_pin")?.summary =
            if (lockManager.contains(Lock.Type.PIN))
                getString(R.string.settings_lock_enabled)
            else
                ""
        if (lockManager.isEmpty()) {
            (findPreference<Preference>("lock_fingerprint") as SwitchPreferenceCompat).isChecked = false
            Preferences["lock_fingerprint"] = false
        }
    }
    override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
        setPreferencesFromResource(R.xml.lock_preferences, rootKey)
        with(findPreference<Preference>("lock_pattern")) {
            this!!
            if (LockManager(requireContext()).contains(Lock.Type.PATTERN))
                summary = getString(R.string.settings_lock_enabled)
            onPreferenceClickListener = Preference.OnPreferenceClickListener {
                val lockManager = LockManager(requireContext())
                if (lockManager.contains(Lock.Type.PATTERN)) {
                    AlertDialog.Builder(requireContext()).apply {
                        setTitle(R.string.warning)
                        setMessage(R.string.settings_lock_remove_message)
                        setPositiveButton(android.R.string.ok) { _, _ ->
                            lockManager.remove(Lock.Type.PATTERN)
                            onResume()
                        }
                        setNegativeButton(android.R.string.cancel) { _, _ -> }
                    }.show()
                } else {
                    val intent = Intent(requireContext(), LockActivity::class.java).apply {
                        putExtra("mode", "add_lock")
                        putExtra("type", "pattern")
                    }
                    startActivity(intent)
                }
                true
            }
        }
        with(findPreference<Preference>("lock_pin")) {
            this!!
            if (LockManager(requireContext()).contains(Lock.Type.PIN))
                summary = getString(R.string.settings_lock_enabled)
            onPreferenceClickListener = Preference.OnPreferenceClickListener {
                val lockManager = LockManager(requireContext())
                if (lockManager.contains(Lock.Type.PIN)) {
                    AlertDialog.Builder(requireContext()).apply {
                        setTitle(R.string.warning)
                        setMessage(R.string.settings_lock_remove_message)
                        setPositiveButton(android.R.string.ok) { _, _ ->
                            lockManager.remove(Lock.Type.PIN)
                            onResume()
                        }
                        setNegativeButton(android.R.string.cancel) { _, _ -> }
                    }.show()
                } else {
                    val intent = Intent(requireContext(), LockActivity::class.java).apply {
                        putExtra("mode", "add_lock")
                        putExtra("type", "pin")
                    }
                    startActivity(intent)
                }
                true
            }
        }
        with(findPreference<Preference>("lock_fingerprint")) {
            this!!
            setOnPreferenceChangeListener { _, newValue ->
                this as SwitchPreferenceCompat
                if (newValue == true && LockManager(requireContext()).isEmpty()) {
                    isChecked = false
                    Toast.makeText(requireContext(), R.string.settings_lock_fingerprint_without_lock, Toast.LENGTH_SHORT).show()
                } else
                    isChecked = newValue as Boolean
                false
            }
        }
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/fragment/ManageFavoritesFragment.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/fragment/ManageFavoritesFragment.kt
@@ -0,0 +1,140 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.ui.fragment
 import android.app.Activity
 import android.content.Intent
 import android.content.res.Resources
 import android.graphics.PorterDuff
 import android.graphics.PorterDuffColorFilter
 import android.os.Bundle
 import android.util.Log
 import android.widget.EditText
 import android.widget.TextView
 import android.widget.Toast
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AlertDialog
 import androidx.core.content.ContextCompat
 import androidx.core.content.FileProvider
 import androidx.core.graphics.drawable.DrawableCompat
 import androidx.preference.Preference
 import androidx.preference.PreferenceFragmentCompat
 import androidx.swiperefreshlayout.widget.CircularProgressDrawable
 import com.google.android.material.snackbar.Snackbar
 import kotlinx.coroutines.MainScope
 import kotlinx.coroutines.launch
 import kotlinx.datetime.LocalDate
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.buildJsonObject
 import kotlinx.serialization.json.decodeFromJsonElement
 import okhttp3.*
 import xyz.quaver.io.FileX
 import xyz.quaver.io.util.readText
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.client
 import xyz.quaver.pupil.favoriteTags
 import xyz.quaver.pupil.favorites
 import xyz.quaver.pupil.types.Tag
 import xyz.quaver.pupil.util.get
 import xyz.quaver.pupil.util.restore
 import java.io.File
 import java.io.IOException
 import kotlin.math.roundToInt
 class ManageFavoritesFragment : PreferenceFragmentCompat() {
    private val requestBackupFileLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
        if (result.resultCode != Activity.RESULT_OK) {
            return@registerForActivityResult
        }
        val uri = result.data?.data ?: return@registerForActivityResult
        val context = context ?: return@registerForActivityResult
        val view = view ?: return@registerForActivityResult
        val backupData = runCatching {
            FileX(context, uri).readText()?.let { Json.parseToJsonElement(it) }
        }.getOrNull() ?: run{
            Snackbar.make(view, context.getString(R.string.error), Toast.LENGTH_LONG).show()
            return@registerForActivityResult
        }
        val newFavorites = backupData["favorites"]?.let { Json.decodeFromJsonElement<List<Int>>(it) }.orEmpty()
        val newFavoriteTags = backupData["favorite_tags"]?.let { Json.decodeFromJsonElement<List<Tag>>(it) }.orEmpty()
        favorites.addAll(newFavorites)
        favoriteTags.addAll(newFavoriteTags)
        Snackbar.make(view, context.getString(R.string.settings_restore_success, newFavorites.size + newFavoriteTags.size), Snackbar.LENGTH_LONG).show()
    }
    override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
        setPreferencesFromResource(R.xml.manage_favorites_preferences, rootKey)
        initPreferences()
    }
    private fun initPreferences() {
        val context = context ?: return
        findPreference<Preference>("backup")?.setOnPreferenceClickListener {
            val favorites = runCatching {
                Json.parseToJsonElement(File(ContextCompat.getDataDir(context), "favorites.json").readText())
            }.getOrNull()
            val favoriteTags = kotlin.runCatching {
                Json.parseToJsonElement(File(ContextCompat.getDataDir(context), "favorites_tags.json").readText())
            }.getOrNull()
            val favoriteJson = buildJsonObject {
                favorites?.let {
                    put("favorites", it)
                }
                favoriteTags?.let {
                    put("favorite_tags", it)
                }
            }
            val backupFile = File(context.filesDir, "pupil-backup.json").also {
                it.writeText(favoriteJson.toString())
            }
            Intent(Intent.ACTION_SEND).apply {
                val uri = FileProvider.getUriForFile(context, "${context.packageName}.provider", backupFile)
                setDataAndType(uri, "application/json")
                addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
                putExtra(Intent.EXTRA_STREAM, uri)
            }.let {
                context.startActivity(Intent.createChooser(it, getString(R.string.settings_backup_share)))
            }
            true
        }
        findPreference<Preference>("restore")?.setOnPreferenceClickListener {
            val intent = Intent(Intent.ACTION_OPEN_DOCUMENT).apply {
                addCategory(Intent.CATEGORY_OPENABLE)
                type = "*/*"
            }
            requestBackupFileLauncher.launch(intent)
            true
        }
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/fragment/ManageStorageFragment.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/fragment/ManageStorageFragment.kt
@@ -0,0 +1,263 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.ui.fragment
 import android.graphics.ColorFilter
 import android.graphics.PorterDuff
 import android.graphics.PorterDuffColorFilter
 import android.os.Bundle
 import android.widget.Toast
 import androidx.appcompat.app.AlertDialog
 import androidx.core.content.ContextCompat
 import androidx.preference.Preference
 import androidx.preference.PreferenceFragmentCompat
 import androidx.swiperefreshlayout.widget.CircularProgressDrawable
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.launch
 import kotlinx.serialization.decodeFromString
 import kotlinx.serialization.encodeToString
 import kotlinx.serialization.json.Json
 import xyz.quaver.io.FileX
 import xyz.quaver.io.SAFileX
 import xyz.quaver.io.util.deleteRecursively
 import xyz.quaver.io.util.getChild
 import xyz.quaver.io.util.readText
 import xyz.quaver.io.util.writeText
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.histories
 import xyz.quaver.pupil.hitomi.json
 import xyz.quaver.pupil.util.byteToString
 import xyz.quaver.pupil.util.downloader.Cache
 import xyz.quaver.pupil.util.downloader.DownloadManager
 import xyz.quaver.pupil.util.downloader.Metadata
 import java.io.File
 import kotlin.math.roundToInt
 class ManageStorageFragment : PreferenceFragmentCompat(), Preference.OnPreferenceClickListener {
    private var job: Job? = null
    override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
        setPreferencesFromResource(R.xml.manage_storage_preferences, rootKey)
        initPreferences()
    }
    override fun onPreferenceClick(preference: Preference): Boolean {
        val context = context ?: return false
        with(preference) {
            when (key) {
                "delete_cache" -> {
                    val dir = File(context.cacheDir, "imageCache")
                    AlertDialog.Builder(context).apply {
                        setTitle(R.string.warning)
                        setMessage(R.string.settings_clear_cache_alert_message)
                        setPositiveButton(android.R.string.ok) { _, _ ->
                            if (dir.exists())
                                dir.deleteRecursively()
                            Cache.instances.clear()
                            summary = context.getString(R.string.settings_storage_usage, byteToString(0))
                            CoroutineScope(Dispatchers.IO).launch {
                                var size = 0L
                                dir.walk().forEach {
                                    size += it.length()
                                    launch(Dispatchers.Main) {
                                        summary = context.getString(R.string.settings_storage_usage, byteToString(size))
                                    }
                                }
                            }
                        }
                        setNegativeButton(android.R.string.cancel) { _, _ -> }
                    }.show()
                }
                "recover_downloads" -> {
                    val density = context.resources.displayMetrics.density
                    this.icon = object: CircularProgressDrawable(context) {
                        override fun getIntrinsicHeight() = (24*density).roundToInt()
                        override fun getIntrinsicWidth() = (24*density).roundToInt()
                    }.apply {
                        setStyle(CircularProgressDrawable.DEFAULT)
                        colorFilter = PorterDuffColorFilter(ContextCompat.getColor(context, R.color.colorAccent), PorterDuff.Mode.SRC_IN)
                        start()
                    }
                    val downloadManager = DownloadManager.getInstance(context)
                    val downloadFolderMap = downloadManager.downloadFolderMap
                    downloadFolderMap.clear()
                    downloadManager.downloadFolder.listFiles { file -> file.isDirectory }?.forEach { folder ->
                        val metadataFile = FileX(context, folder, ".metadata")
                        if (!metadataFile.exists()) return@forEach
                        val metadata = metadataFile.readText()?.let {
                            runCatching {
                                json.decodeFromString<Metadata>(it)
                            }.getOrNull()
                        } ?: return@forEach
                        val galleryID = metadata.galleryBlock?.id ?: metadata.galleryInfo?.id?.toIntOrNull() ?: return@forEach
                        downloadFolderMap[galleryID] = folder.name
                    }
                    downloadManager.downloadFolderMap.putAll(downloadFolderMap)
                    val downloads = FileX(context, downloadManager.downloadFolder, ".download")
                    if (!downloads.exists()) downloads.createNewFile()
                    downloads.writeText(Json.encodeToString(downloadFolderMap))
                    this.icon = null
                    Toast.makeText(context, android.R.string.ok, Toast.LENGTH_SHORT).show()
                }
                "delete_downloads" -> {
                    val dir = DownloadManager.getInstance(context).downloadFolder
                    AlertDialog.Builder(context).apply {
                        setTitle(R.string.warning)
                        setMessage(R.string.settings_clear_downloads_alert_message)
                        setPositiveButton(android.R.string.ok) { _, _ ->
                            CoroutineScope(Dispatchers.IO).launch {
                                job?.cancel()
                                launch(Dispatchers.Main) {
                                    summary = context.getString(R.string.settings_storage_usage_loading)
                                }
                                if (dir.exists())
                                    dir.listFiles()?.forEach {
                                        when (it) {
                                            is FileX -> it.deleteRecursively()
                                            else -> it.deleteRecursively()
                                        }
                                    }
                                job = launch {
                                    var size = 0L
                                    launch(Dispatchers.Main) {
                                        summary = context.getString(R.string.settings_storage_usage, byteToString(size))
                                    }
                                    dir.walk().forEach {
                                        size += it.length()
                                        launch(Dispatchers.Main) {
                                            summary = context.getString(R.string.settings_storage_usage, byteToString(size))
                                        }
                                    }
                                }
                            }
                        }
                        setNegativeButton(android.R.string.cancel) { _, _ -> }
                    }.show()
                }
                "clear_history" -> {
                    AlertDialog.Builder(context).apply {
                        setTitle(R.string.warning)
                        setMessage(R.string.settings_clear_history_alert_message)
                        setPositiveButton(android.R.string.ok) { _, _ ->
                            histories.clear()
                            summary = context.getString(R.string.settings_clear_history_summary, histories.size)
                        }
                        setNegativeButton(android.R.string.cancel) { _, _ -> }
                    }.show()
                }
                else -> return false
            }
        }
        return true
    }
    private fun initPreferences() {
        val context = context ?: return
        with(findPreference<Preference>("delete_cache")) {
            this ?: return@with
            val dir = File(context.cacheDir, "imageCache")
            summary = context.getString(R.string.settings_storage_usage, byteToString(0))
            CoroutineScope(Dispatchers.IO).launch {
                var size = 0L
                dir.walk().forEach {
                    size += it.length()
                    launch(Dispatchers.Main) {
                        summary = context.getString(R.string.settings_storage_usage, byteToString(size))
                    }
                }
            }
            onPreferenceClickListener = this@ManageStorageFragment
        }
        with(findPreference<Preference>("delete_downloads")) {
            this ?: return@with
            val dir = DownloadManager.getInstance(context).downloadFolder
            summary = context.getString(R.string.settings_storage_usage, byteToString(0))
            job?.cancel()
            job = CoroutineScope(Dispatchers.IO).launch {
                var size = 0L
                dir.walk().forEach {
                    launch(Dispatchers.Main) {
                        summary = context.getString(R.string.settings_storage_usage, byteToString(size))
                    }
                    size += it.length()
                }
            }
            onPreferenceClickListener = this@ManageStorageFragment
        }
        with(findPreference<Preference>("clear_history")) {
            this ?: return@with
            summary = context.getString(R.string.settings_clear_history_summary, histories.size)
            onPreferenceClickListener = this@ManageStorageFragment
        }
        with(findPreference<Preference>("recover_downloads")) {
            this ?: return@with
            onPreferenceClickListener = this@ManageStorageFragment
        }
    }
    override fun onDestroy() {
        job?.cancel()
        super.onDestroy()
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/fragment/PINLockFragment.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/fragment/PINLockFragment.kt
@@ -0,0 +1,57 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.ui.fragment
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.fragment.app.Fragment
 import com.andrognito.pinlockview.PinLockListener
 import xyz.quaver.pupil.databinding.PinLockFragmentBinding
 class PINLockFragment : Fragment() {
    private var _binding: PinLockFragmentBinding? = null
    val binding get() = _binding!!
    var onPINEntered: ((String) -> Unit)? = null
    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
        _binding = PinLockFragmentBinding.inflate(inflater, container, false)
        binding.pinLockView.attachIndicatorDots(binding.indicatorDots)
        binding.pinLockView.setPinLockListener(object: PinLockListener {
            override fun onComplete(p0: String?) {
                onPINEntered?.invoke(p0 ?: "")
            }
            override fun onEmpty() {}
            override fun onPinChange(p0: Int, p1: String?) {}
        })
        return binding.root
    }
    override fun onDestroy() {
        super.onDestroy()
        _binding = null
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/fragment/PatternLockFragment.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/fragment/PatternLockFragment.kt
@@ -26,38 +26,36 @@ import androidx.fragment.app.Fragment
 import com.andrognito.patternlockview.PatternLockView
 import com.andrognito.patternlockview.listener.PatternLockViewListener
 import com.andrognito.patternlockview.utils.PatternLockUtils
-import kotlinx.android.synthetic.main.fragment_pattern_lock.*
+import xyz.quaver.pupil.databinding.PatternLockFragmentBinding
 import kotlinx.android.synthetic.main.fragment_pattern_lock.view.*
 import xyz.quaver.pupil.R
-class PatternLockFragment : Fragment(), PatternLockViewListener {
+class PatternLockFragment : Fragment() {
    private var _binding: PatternLockFragmentBinding? = null
    val binding get() = _binding!!
    var onPatternDrawn: ((String) -> Unit)? = null
    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
-    ): View? {
+    ): View {
-        return inflater.inflate(R.layout.fragment_pattern_lock, container, false).apply {
+        _binding = PatternLockFragmentBinding.inflate(inflater, container, false)
-            lock_pattern_view.addPatternLockListener(this@PatternLockFragment)
+        binding.patternLockView.addPatternLockListener(object: PatternLockViewListener {
        }
    }
    override fun onCleared() {
    }
            override fun onComplete(pattern: MutableList<PatternLockView.Dot>?) {
-        val password = PatternLockUtils.patternToMD5(lock_pattern_view, pattern)
+                val password = PatternLockUtils.patternToMD5(binding.patternLockView, pattern)
                onPatternDrawn?.invoke(password)
            }
-    override fun onProgress(progressPattern: MutableList<PatternLockView.Dot>?) {
+            override fun onCleared() {}
-
+            override fun onProgress(progressPattern: MutableList<PatternLockView.Dot>?) {}
            override fun onStarted() {}
        })
        return binding.root
    }
-    override fun onStarted() {
+    override fun onDestroy() {
-
+        super.onDestroy()
        _binding = null
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/fragment/SettingsFragment.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/fragment/SettingsFragment.kt
@@ -18,28 +18,36 @@
 package xyz.quaver.pupil.ui.fragment
-import android.content.Intent
+import android.app.Activity
-import android.content.SharedPreferences
+import android.content.*
 import android.os.Bundle
-import androidx.appcompat.app.AlertDialog
+import android.util.Log
 import android.widget.Toast
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AppCompatDelegate
-import androidx.core.content.ContextCompat
+import androidx.preference.*
-import androidx.documentfile.provider.DocumentFile
+import com.google.android.gms.oss.licenses.OssLicensesMenuActivity
-import androidx.preference.Preference
+import com.google.firebase.crashlytics.FirebaseCrashlytics
-import androidx.preference.PreferenceCategory
+import com.google.firebase.crashlytics.internal.model.CrashlyticsReport
-import androidx.preference.PreferenceFragmentCompat
+import kotlinx.coroutines.CoroutineScope
-import androidx.preference.PreferenceManager
+import kotlinx.coroutines.Dispatchers
-import com.google.android.material.snackbar.Snackbar
+import kotlinx.coroutines.launch
-import xyz.quaver.pupil.Pupil
+import okhttp3.Dispatcher
 import xyz.quaver.io.FileX
 import xyz.quaver.io.util.getChild
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.client
 import xyz.quaver.pupil.clientBuilder
 import xyz.quaver.pupil.clientHolder
 import xyz.quaver.pupil.types.SendLogException
 import xyz.quaver.pupil.ui.LockActivity
 import xyz.quaver.pupil.ui.SettingsActivity
-import xyz.quaver.pupil.ui.dialog.DefaultQueryDialog
+import xyz.quaver.pupil.ui.TransferActivity
-import xyz.quaver.pupil.ui.dialog.DownloadLocationDialog
+import xyz.quaver.pupil.ui.dialog.*
 import xyz.quaver.pupil.ui.dialog.MirrorDialog
 import xyz.quaver.pupil.util.*
-import java.io.File
+import xyz.quaver.pupil.util.downloader.DownloadManager
-
+import java.util.*
 import java.util.concurrent.Executors
 class SettingsFragment :
    PreferenceFragmentCompat(),
@@ -47,16 +55,20 @@ class SettingsFragment :
    Preference.OnPreferenceChangeListener,
    SharedPreferences.OnSharedPreferenceChangeListener {
-    override fun onCreate(savedInstanceState: Bundle?) {
+    private val lockLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
-        super.onCreate(savedInstanceState)
+        if (it.resultCode == Activity.RESULT_OK) {
-
+            parentFragmentManager
-        PreferenceManager.getDefaultSharedPreferences(context).registerOnSharedPreferenceChangeListener(this)
+                .beginTransaction()
                .replace(R.id.settings, LockSettingsFragment())
                .addToBackStack("Lock")
                .commitAllowingStateLoss()
        }
    }
    override fun onResume() {
        super.onResume()
-        val lockManager = LockManager(context!!)
+        val lockManager = LockManager(requireContext())
        findPreference<Preference>("app_lock")?.summary = if (lockManager.locks.isNullOrEmpty()) {
            getString(R.string.settings_lock_none)
@@ -71,103 +83,41 @@ class SettingsFragment :
        }
    }
-    private fun getDirSize(dir: DocumentFile) : String {
+    override fun onPreferenceClick(preference: Preference): Boolean {
        val size = dir.walk().map { it.length() }.sum()
        return getString(R.string.settings_clear_summary, byteToString(size))
    }
    override fun onPreferenceClick(preference: Preference?): Boolean {
        with (preference) {
            this ?: return false
            when (key) {
                "app_version" -> {
                    checkUpdate(activity as SettingsActivity, true)
                }
-                "delete_cache" -> {
+                "download_folder" -> {
-                    val dir = DocumentFile.fromFile(File(context.cacheDir, "imageCache"))
+                    DownloadLocationDialogFragment().show(parentFragmentManager, "Download Location Dialog")
                    AlertDialog.Builder(context).apply {
                        setTitle(R.string.warning)
                        setMessage(R.string.settings_clear_cache_alert_message)
                        setPositiveButton(android.R.string.yes) { _, _ ->
                            if (dir.exists())
                                dir.deleteRecursively()
                            summary = getDirSize(dir)
                        }
                        setNegativeButton(android.R.string.no) { _, _ -> }
                    }.show()
                }
                "delete_downloads" -> {
                    val dir = getDownloadDirectory(context)
                    AlertDialog.Builder(context).apply {
                        setTitle(R.string.warning)
                        setMessage(R.string.settings_clear_downloads_alert_message)
                        setPositiveButton(android.R.string.yes) { _, _ ->
                            if (dir.exists())
                                dir.deleteRecursively()
                            summary = getDirSize(dir)
                        }
                        setNegativeButton(android.R.string.no) { _, _ -> }
                    }.show()
                }
                "clear_history" -> {
                    val histories = (context.applicationContext as Pupil).histories
                    AlertDialog.Builder(context).apply {
                        setTitle(R.string.warning)
                        setMessage(R.string.settings_clear_history_alert_message)
                        setPositiveButton(android.R.string.yes) { _, _ ->
                            histories.clear()
                            summary = getString(R.string.settings_clear_history_summary, histories.size)
                        }
                        setNegativeButton(android.R.string.no) { _, _ -> }
                    }.show()
                }
                "dl_location" -> {
                    DownloadLocationDialog(activity!!).show()
                }
                "default_query" -> {
-                    DefaultQueryDialog(context).apply {
+                    DefaultQueryDialog().apply {
                        onPositiveButtonClickListener = { newTags ->
-                            sharedPreferences.edit().putString("default_query", newTags.toString()).apply()
+                            Preferences["default_query"] = newTags.toString()
                            summary = newTags.toString()
                        }
-                    }.show()
+                    }.show(parentFragmentManager, "Default Query Dialog")
                }
                "app_lock" -> {
-                    val intent = Intent(context, LockActivity::class.java)
+                    val intent = Intent(requireContext(), LockActivity::class.java).apply {
-                    activity?.startActivityForResult(intent, REQUEST_LOCK)
+                        putExtra("force", true)
                    }
-                "mirrors" -> {
+                    lockLauncher.launch(intent)
                    MirrorDialog(context)
                        .show()
                }
-                "backup" -> {
+                "proxy" -> {
-                    File(ContextCompat.getDataDir(context), "favorites.json").copyTo(
+                    ProxyDialogFragment().show(parentFragmentManager, "Proxy Dialog")
                        context,
                        getDownloadDirectory(context).let {
                            if (it.findFile("favorites.json") != null)
                                it
                            else
                                it.createFile("null", "favorites.json")!!
                }
                "user_id" -> {
                    FirebaseCrashlytics.getInstance().recordException(SendLogException())
                    (context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager).setPrimaryClip(
                        ClipData.newPlainText("user_id", Preferences.get<String>("user_id"))
                    )
-
+                    Toast.makeText(context, R.string.copied_to_clipboard, Toast.LENGTH_SHORT).show()
                    Snackbar.make(this@SettingsFragment.listView, R.string.settings_backup_snackbar, Snackbar.LENGTH_LONG)
                        .show()
                }
-                "restore" -> {
+                "transfer_data" -> {
-                    val intent = Intent(Intent.ACTION_GET_CONTENT).apply {
+                    activity?.startActivity(Intent(activity, TransferActivity::class.java))
                        addCategory(Intent.CATEGORY_OPENABLE)
                        type = "*/*"
                    }
                    activity?.startActivityForResult(intent, REQUEST_RESTORE)
                }
                else -> return false
            }
@@ -176,11 +126,24 @@ class SettingsFragment :
        return true
    }
-    override fun onPreferenceChange(preference: Preference?, newValue: Any?): Boolean {
+    override fun onPreferenceChange(preference: Preference, newValue: Any?): Boolean {
        with (preference) {
            this ?: return false
            when (key) {
                "tag_translation" -> {
                    updateTranslations()
                }
                "nomedia" -> {
                    val create = (newValue as? Boolean) ?: return false
                    return kotlin.runCatching {
                        val nomedia = DownloadManager.getInstance(context).downloadFolder.getChild(".nomedia")
                        if (create)
                            nomedia.createNewFile()
                        else
                            nomedia.delete()
                    }.getOrDefault(false)
                }
                "dark_mode" -> {
                    AppCompatDelegate.setDefaultNightMode(when (newValue as Boolean) {
                        true -> AppCompatDelegate.MODE_NIGHT_YES
@@ -195,9 +158,33 @@ class SettingsFragment :
    }
    override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences?, key: String?) {
        key ?: return
        with(findPreference<Preference>(key)) {
            this ?: return
            when (key) {
-            "dl_location" -> {
+                "proxy" -> {
-                findPreference<Preference>(key)?.summary = getDownloadDirectory(context!!).uri.path
+                    summary = context.let { getProxyInfo().type.name }
                }
                "download_folder" -> {
                    summary = FileX(context, Preferences.get<String>("download_folder")).canonicalPath
                }
                "download_folder_name" -> {
                    summary = Preferences["download_folder_name", "[-id-] -title-"]
                }
                "max_concurrent_download" -> {
                    val newValue = Preferences.get<String>(key).toIntOrNull() ?: 0
                    if (newValue == 0)
                        clientBuilder.dispatcher(Dispatcher())
                    else
                        clientBuilder.dispatcher((Dispatcher(Executors.newFixedThreadPool(newValue))))
                    clientHolder = null
                    client
                }
                else -> return
            }
        }
    }
@@ -205,9 +192,16 @@ class SettingsFragment :
    override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
        setPreferencesFromResource(R.xml.root_preferences, rootKey)
        Preferences.registerOnSharedPreferenceChangeListener(this)
        initPreferences()
    }
    override fun onDestroy() {
        Preferences.unregisterOnSharedPreferenceChangeListener(this)
        super.onDestroy()
    }
    private fun initPreferences() {
        for (i in 0 until preferenceScreen.preferenceCount) {
@@ -217,47 +211,44 @@ class SettingsFragment :
                else
                    listOf(this)
            }.forEach { preference ->
-                with (preference) {
+                with (preference) with@{
                    when (key) {
                        "app_version" -> {
-                            val manager = context.packageManager
+                            val manager = requireContext().packageManager
-                            val info = manager.getPackageInfo(context.packageName, 0)
+                            val info = manager.getPackageInfo(requireContext().packageName, 0)
-                            summary = context.getString(R.string.settings_app_version_description, info.versionName)
+                            summary = requireContext().getString(R.string.settings_app_version_description, info.versionName)
                            onPreferenceClickListener = this@SettingsFragment
                        }
-                        "delete_cache" -> {
+                        "download_folder_name" -> {
-                            val dir = DocumentFile.fromFile(File(context.cacheDir, "imageCache"))
+                            summary = Preferences["download_folder_name", "[-id-] -title-"]
-                            summary = getDirSize(dir)
+
                            setOnPreferenceClickListener {
                                DownloadFolderNameDialogFragment().show(requireActivity().supportFragmentManager, "Download Location Dialog")
                                true
                            }
                        }
                        "download_folder" -> {
                            summary = FileX(context, Preferences.get<String>("download_folder")).canonicalPath
                            onPreferenceClickListener = this@SettingsFragment
                        }
-                        "delete_downloads" -> {
+                        "nomedia" -> {
-                            val dir = getDownloadDirectory(context)
+                            (this as SwitchPreferenceCompat).isChecked = kotlin.runCatching {
-                            summary = getDirSize(dir)
+                                DownloadManager.getInstance(context).downloadFolder.getChild(".nomedia").exists()
                            }.getOrDefault(false)
-                            onPreferenceClickListener = this@SettingsFragment
+                            onPreferenceChangeListener = this@SettingsFragment
                        }
                        "clear_history" -> {
                            val histories = (activity!!.application as Pupil).histories
                            summary = getString(R.string.settings_clear_history_summary, histories.size)
                            onPreferenceClickListener = this@SettingsFragment
                        }
                        "dl_location" -> {
                            summary = getDownloadDirectory(context).uri.path
                            onPreferenceClickListener = this@SettingsFragment
                        }
                        "default_query" -> {
-                            val preferences = PreferenceManager.getDefaultSharedPreferences(context)
+                            summary = Preferences.get<String>("default_query")
                            summary = preferences.getString("default_query", "") ?: ""
                            onPreferenceClickListener = this@SettingsFragment
                        }
                        "app_lock" -> {
-                            val lockManager = LockManager(context)
+                            val lockManager = LockManager(requireContext())
                            summary =
                                if (lockManager.locks.isNullOrEmpty()) {
                                    getString(R.string.settings_lock_none)
@@ -273,16 +264,49 @@ class SettingsFragment :
                            onPreferenceClickListener = this@SettingsFragment
                        }
-                        "mirrors" -> {
+                        "proxy" -> {
                            summary = getProxyInfo().type.name
                            onPreferenceClickListener = this@SettingsFragment
                        }
                        "tag_translation" -> {
                            this as ListPreference
                            isEnabled = false
                            CoroutineScope(Dispatchers.IO).launch {
                                kotlin.runCatching {
                                    val languages = getAvailableLanguages().distinct().toTypedArray()
                                    entries = languages.map { Locale(it).let { loc -> loc.getDisplayLanguage(loc) } }.toTypedArray()
                                    entryValues = languages
                                    launch(Dispatchers.Main) {
                                        isEnabled = true
                                    }
                                }
                            }
                            onPreferenceChangeListener = this@SettingsFragment
                        }
                        "dark_mode" -> {
                            onPreferenceChangeListener = this@SettingsFragment
                        }
-                        "backup" -> {
+                        "old_import_galleries" -> {
                            onPreferenceClickListener = this@SettingsFragment
                        }
-                        "restore" -> {
+                        "user_id" -> {
                            summary = Preferences.get<String>("user_id")
                            onPreferenceClickListener = this@SettingsFragment
                        }
                        "oss" -> {
                            setOnPreferenceClickListener {
                                context.startActivity(Intent(context, OssLicensesMenuActivity::class.java))
                                true
                            }
                        }
                        "transfer_data" -> {
                            onPreferenceClickListener = this@SettingsFragment
                        }
                    }
--- a/app/src/main/java/xyz/quaver/pupil/ui/fragment/TransferConnectedFragment.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/fragment/TransferConnectedFragment.kt
@@ -0,0 +1,10 @@
 package xyz.quaver.pupil.ui.fragment
 import androidx.fragment.app.Fragment
 import xyz.quaver.pupil.R
 class TransferConnectedFragment: Fragment(R.layout.transfer_connected_fragment) {
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/fragment/TransferDirectionFragment.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/fragment/TransferDirectionFragment.kt
@@ -0,0 +1,44 @@
 package xyz.quaver.pupil.ui.fragment
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.activityViewModels
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.databinding.TransferDirectionFragmentBinding
 import xyz.quaver.pupil.ui.TransferStep
 import xyz.quaver.pupil.ui.TransferViewModel
 class TransferDirectionFragment : Fragment(R.layout.transfer_direction_fragment) {
    private var _binding: TransferDirectionFragmentBinding? = null
    private val binding get() = _binding!!
    private val viewModel: TransferViewModel by activityViewModels()
    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View {
        _binding = TransferDirectionFragmentBinding.inflate(inflater, container, false)
        binding.inButton.setOnClickListener {
            viewModel.setStep(TransferStep.TARGET)
        }
        binding.outButton.setOnClickListener {
            viewModel.setStep(TransferStep.WAIT_FOR_CONNECTION)
        }
        return binding.root
    }
    override fun onDestroyView() {
        super.onDestroyView()
        _binding = null
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/fragment/TransferPermissionFragment.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/fragment/TransferPermissionFragment.kt
@@ -0,0 +1,38 @@
 package xyz.quaver.pupil.ui.fragment
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.activityViewModels
 import xyz.quaver.pupil.databinding.TransferPermissionFragmentBinding
 import xyz.quaver.pupil.ui.TransferStep
 import xyz.quaver.pupil.ui.TransferViewModel
 class TransferPermissionFragment: Fragment() {
    private var _binding: TransferPermissionFragmentBinding? = null
    private val binding get() = _binding!!
    private val viewModel: TransferViewModel by activityViewModels()
    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View {
        _binding = TransferPermissionFragmentBinding.inflate(inflater, container, false)
        binding.permissionsButton.setOnClickListener {
            viewModel.setStep(TransferStep.TARGET_FORCE)
        }
        return binding.root
    }
    override fun onDestroyView() {
        super.onDestroyView()
        _binding = null
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/fragment/TransferSelectDataFragment.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/fragment/TransferSelectDataFragment.kt
@@ -0,0 +1,37 @@
 package xyz.quaver.pupil.ui.fragment
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.activityViewModels
 import xyz.quaver.pupil.databinding.TransferSelectDataFragmentBinding
 import xyz.quaver.pupil.ui.TransferViewModel
 class TransferSelectDataFragment: Fragment() {
    private var _binding: TransferSelectDataFragmentBinding? = null
    private val binding get() = _binding!!
    private val viewModel: TransferViewModel by activityViewModels()
    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        _binding = TransferSelectDataFragmentBinding.inflate(inflater, container, false)
        binding.checkAll.setOnCheckedChangeListener {  _, isChecked ->
            viewModel.list()
        }
        return binding.root
    }
    override fun onDestroyView() {
        super.onDestroyView()
        _binding = null
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/fragment/TransferTargetFragment.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/fragment/TransferTargetFragment.kt
@@ -0,0 +1,69 @@
 package xyz.quaver.pupil.ui.fragment
 import android.os.Bundle
 import android.util.Log
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.ArrayAdapter
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.activityViewModels
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.adapters.TransferPeersAdapter
 import xyz.quaver.pupil.databinding.TransferTargetFragmentBinding
 import xyz.quaver.pupil.ui.TransferStep
 import xyz.quaver.pupil.ui.TransferViewModel
 class TransferTargetFragment : Fragment() {
    private var _binding: TransferTargetFragmentBinding? = null
    private val binding get() = _binding!!
    private val viewModel: TransferViewModel by activityViewModels()
    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View {
        _binding = TransferTargetFragmentBinding.inflate(inflater, container, false)
        viewModel.thisDevice.observe(viewLifecycleOwner) { device ->
            if (device == null) {
                return@observe
            }
            if (device.status == 3) {
                binding.ripple.startRippleAnimation()
                binding.retryButton.visibility = View.INVISIBLE
            } else {
                binding.ripple.stopRippleAnimation()
                binding.retryButton.visibility = View.VISIBLE
            }
        }
        viewModel.peers.observe(viewLifecycleOwner) { peers ->
            if (peers == null) {
                return@observe
            }
            binding.deviceList.adapter = TransferPeersAdapter(peers.deviceList) {
                viewModel.connect(it)
            }
        }
        binding.ripple.startRippleAnimation()
        binding.retryButton.setOnClickListener {
            viewModel.setStep(TransferStep.TARGET)
        }
        return binding.root
    }
    override fun onDestroyView() {
        super.onDestroyView()
        _binding = null
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/fragment/TransferWaitForConnectionFragment.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/fragment/TransferWaitForConnectionFragment.kt
@@ -0,0 +1,32 @@
 package xyz.quaver.pupil.ui.fragment
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.fragment.app.Fragment
 import xyz.quaver.pupil.databinding.TransferWaitForConnectionFragmentBinding
 class TransferWaitForConnectionFragment : Fragment() {
    private var _binding: TransferWaitForConnectionFragmentBinding? = null
    private val binding get() = _binding!!
    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        _binding = TransferWaitForConnectionFragmentBinding.inflate(layoutInflater)
        binding.ripple.startRippleAnimation()
        return binding.root
    }
    override fun onDestroyView() {
        super.onDestroyView()
        _binding = null
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/view/FloatingSearchView.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/view/FloatingSearchView.kt
@@ -0,0 +1,216 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.ui.view
 import android.content.Context
 import android.graphics.PorterDuff
 import android.graphics.PorterDuffColorFilter
 import android.graphics.drawable.Animatable
 import android.text.Editable
 import android.text.TextWatcher
 import android.util.AttributeSet
 import android.util.Log
 import android.view.LayoutInflater
 import android.view.View
 import android.view.inputmethod.EditorInfo
 import android.widget.ImageView
 import android.widget.LinearLayout
 import android.widget.TextView
 import androidx.core.content.ContextCompat
 import androidx.core.content.res.ResourcesCompat
 import androidx.swiperefreshlayout.widget.CircularProgressDrawable
 import androidx.vectordrawable.graphics.drawable.AnimatedVectorDrawableCompat
 import xyz.quaver.floatingsearchview.FloatingSearchView
 import xyz.quaver.floatingsearchview.suggestions.model.SearchSuggestion
 import xyz.quaver.floatingsearchview.util.view.SearchInputView
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.favoriteTags
 import xyz.quaver.pupil.types.*
 import java.util.*
 class FloatingSearchView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null) :
    FloatingSearchView(context, attrs),
    FloatingSearchView.OnSearchListener,
    TextWatcher
 {
    private val searchInputView = findViewById<SearchInputView>(R.id.search_bar_text)
    var onHistoryDeleteClickedListener: ((String) -> Unit)? = null
    var onFavoriteHistorySwitchClickListener: (() -> Unit)? = null
    init {
        searchInputView.imeOptions = EditorInfo.IME_FLAG_NO_EXTRACT_UI or searchInputView.imeOptions
        searchInputView.addTextChangedListener(this)
        onSearchListener = this
        onBindSuggestionCallback = { binding, item, itemPosition ->
            onBindSuggestion(binding.root, binding.leftIcon, binding.body, item, itemPosition)
        }
    }
    override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {
    }
    override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
    }
    override fun afterTextChanged(s: Editable?) {
        s ?: return
        if (s.any { it.isUpperCase() })
            s.replace(0, s.length, s.toString().toLowerCase(Locale.getDefault()))
    }
    override fun onSuggestionClicked(searchSuggestion: SearchSuggestion?) {
        when (searchSuggestion) {
            is TagSuggestion -> {
                val tag = "${searchSuggestion.n}:${searchSuggestion.s.replace(Regex("\\s"), "_")}"
                with(searchInputView.text!!) {
                    delete(if (lastIndexOf(' ') == -1) 0 else lastIndexOf(' ') + 1, length)
                    if (!this.contains(tag))
                        append("$tag ")
                }
            }
            is Suggestion -> {
                with(searchInputView.text!!) {
                    clear()
                    append(searchSuggestion.body)
                }
            }
            is FavoriteHistorySwitch -> onFavoriteHistorySwitchClickListener?.invoke()
        }
    }
    override fun onSearchAction(currentQuery: String?) {}
    fun onBindSuggestion(
        suggestionView: View?,
        leftIcon: ImageView?,
        textView: TextView?,
        item: SearchSuggestion?,
        itemPosition: Int
    ) {
      when(item) {
            is TagSuggestion -> {
                val tag = "${item.n}:${item.s}"
                leftIcon?.setImageDrawable(
                    ResourcesCompat.getDrawable(
                        resources,
                        when(item.n) {
                            "female" -> R.drawable.gender_female
                            "male" -> R.drawable.gender_male
                            "language" -> R.drawable.translate
                            "group" -> R.drawable.account_group
                            "character" -> R.drawable.account_star
                            "series" -> R.drawable.book_open
                            "artist" -> R.drawable.brush
                            else -> R.drawable.tag
                        },
                        context.theme)
                )
                with(suggestionView?.findViewById<ImageView>(R.id.right_icon)) {
                    this ?: return@with
                    if (favoriteTags.contains(Tag.parse(tag)))
                        setImageResource(R.drawable.ic_star_filled)
                    else
                        setImageResource(R.drawable.ic_star_empty)
                    visibility = View.VISIBLE
                    rotation = 0f
                    isEnabled = true
                    isClickable = true
                    setOnClickListener {
                        val tag = Tag.parse(tag)
                        if (favoriteTags.contains(tag)) {
                            setImageResource(R.drawable.ic_star_empty)
                            favoriteTags.remove(tag)
                        }
                        else {
                            setImageDrawable(
                                AnimatedVectorDrawableCompat.create(context,
                                    R.drawable.avd_star
                                ))
                            (drawable as Animatable).start()
                            favoriteTags.add(tag)
                        }
                    }
                }
                if (item.t > 0) {
                    (suggestionView as? LinearLayout)?.let {
                        val count = it.findViewById<TextView>(R.id.count)
                        if (count == null)
                            it.addView(
                                LayoutInflater.from(context).inflate(R.layout.suggestion_count, suggestionView, false)
                                    .apply {
                                        this as TextView
                                        text = item.t.toString()
                                    }, 2
                            )
                        else
                            count.text = item.t.toString()
                    }
                }
            }
            is FavoriteHistorySwitch -> {
                leftIcon?.setImageDrawable(ResourcesCompat.getDrawable(resources, R.drawable.swap_horizontal, context.theme))
            }
            is Suggestion -> {
                leftIcon?.setImageDrawable(ResourcesCompat.getDrawable(resources, R.drawable.history, context.theme))
                with(suggestionView?.findViewById<ImageView>(R.id.right_icon)) {
                    this ?: return@with
                    setImageDrawable(ResourcesCompat.getDrawable(resources, R.drawable.delete, context.theme))
                    visibility = View.VISIBLE
                    rotation = 0f
                    isEnabled = true
                    isClickable = true
                    setOnClickListener {
                        onHistoryDeleteClickedListener?.invoke(item.body)
                    }
                }
            }
            is LoadingSuggestion -> {
                leftIcon?.setImageDrawable(CircularProgressDrawable(context).also {
                    it.setStyle(CircularProgressDrawable.DEFAULT)
                    it.colorFilter = PorterDuffColorFilter(ContextCompat.getColor(context, R.color.colorAccent), PorterDuff.Mode.SRC_IN)
                    it.start()
                })
            }
            is NoResultSuggestion -> {
                leftIcon?.setImageDrawable(ResourcesCompat.getDrawable(resources, R.drawable.close, context.theme))
            }
        }
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/view/MainView.java
+++ b/app/src/main/java/xyz/quaver/pupil/ui/view/MainView.java
@@ -0,0 +1,462 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.ui.view;
 import android.animation.ValueAnimator;
 import android.content.Context;
 import android.content.res.Configuration;
 import android.graphics.Canvas;
 import android.graphics.Paint;
 import android.graphics.Rect;
 import android.os.Vibrator;
 import android.util.AttributeSet;
 import android.util.DisplayMetrics;
 import android.view.Gravity;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.animation.DecelerateInterpolator;
 import android.widget.TextView;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AppCompatDelegate;
 import androidx.appcompat.content.res.AppCompatResources;
 import androidx.core.content.ContextCompat;
 import androidx.core.view.NestedScrollingChild;
 import androidx.core.view.NestedScrollingChildHelper;
 import androidx.core.view.NestedScrollingParent;
 import androidx.core.view.NestedScrollingParentHelper;
 import androidx.core.view.ViewCompat;
 import androidx.core.widget.TextViewCompat;
 import xyz.quaver.pupil.R;
@SuppressWarnings("NullableProblems")
 public class MainView extends ViewGroup implements NestedScrollingChild, NestedScrollingParent {
    private static final int PAGE_TURN_LAYOUT_SIZE = 48;
    private static final int PAGE_TURN_ANIM_DURATION = 500;
    private static final int PREV_OFFSET = 64;
    private static final int RIPPLE_GIVE = 4;
    private final float adjustedPageTurnLayoutSize;
    private final float adjustedPrevOffset;
    private final float adjustedRippleGive;
    final private NestedScrollingParentHelper mNestedScrollingParentHelper;
    final private NestedScrollingChildHelper mNestedScrollingChildHelper;
    final private Vibrator mVibrator;
    private View mTarget;
    private TextView mPrev;
    private TextView mNext;
    private final Paint mRipplePaint = new Paint();
    private final Rect mRippleBound = new Rect();
    private int mRippleSize = 0;
    private final int mRippleTargetSize;
    private final ValueAnimator mRippleAnimator = new ValueAnimator();
    private int mCurrentOverScroll = 0;
    private int mCurrentPage = 1;
    private boolean mShowPrev;
    private boolean mShowNext;
    private OnPageTurnListener mOnPageTurnListener;
    public MainView(@NonNull Context context) {
        this(context, null);
    }
    public MainView(@NonNull Context context, AttributeSet attr) {
        this(context, attr, 0);
    }
    public MainView(@NonNull Context context, AttributeSet attr, int defStyle) {
        super(context, attr, defStyle);
        setWillNotDraw(false);
        DisplayMetrics metrics = getResources().getDisplayMetrics();
        adjustedPageTurnLayoutSize = PAGE_TURN_LAYOUT_SIZE * metrics.density;
        adjustedPrevOffset = PREV_OFFSET * metrics.density;
        adjustedRippleGive = RIPPLE_GIVE * metrics.density;
        mRippleTargetSize = metrics.widthPixels;
        mNestedScrollingParentHelper = new NestedScrollingParentHelper(this);
        mNestedScrollingChildHelper = new NestedScrollingChildHelper(this);
        mVibrator = (Vibrator) getContext().getSystemService(Context.VIBRATOR_SERVICE);
        mRippleAnimator.addUpdateListener(animation -> {
            mRippleSize = (int) animation.getAnimatedValue();
            invalidate();
        });
        mRippleAnimator.setDuration(PAGE_TURN_ANIM_DURATION);
        initPageTurnView();
    }
    public void setCurrentPage(int currentPage, boolean showNext) {
        mCurrentPage = currentPage;
        mShowPrev = currentPage > 1;
        mShowNext = showNext;
        mPrev.setText(getContext().getString(R.string.main_move_to_page, mCurrentPage-1));
        mNext.setText(getContext().getString(R.string.main_move_to_page, mCurrentPage+1));
    }
    public void setOnPageTurnListener(OnPageTurnListener listener) {
        mOnPageTurnListener = listener;
    }
    private void initPageTurnView() {
        TextView prev = new TextView(getContext());
        TextView next = new TextView(getContext());
        prev.setGravity(Gravity.CENTER_VERTICAL);
        next.setGravity(Gravity.CENTER_VERTICAL);
        prev.setCompoundDrawablesWithIntrinsicBounds(R.drawable.navigate_prev, 0, 0, 0);
        next.setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.navigate_next, 0);
        TextViewCompat.setCompoundDrawableTintList(prev, AppCompatResources.getColorStateList(getContext(), R.color.colorAccent));
        TextViewCompat.setCompoundDrawableTintList(next, AppCompatResources.getColorStateList(getContext(), R.color.colorAccent));
        prev.setVisibility(View.INVISIBLE);
        next.setVisibility(View.INVISIBLE);
        mPrev = prev;
        mNext = next;
        addView(mPrev);
        addView(mNext);
        setCurrentPage(1, false);
    }
    private void ensureTarget() {
        if (mTarget == null) {
            for (int i = 0; i < getChildCount(); i++) {
                View child = getChildAt(i);
                if (!child.equals(mNext) && !child.equals(mPrev)) {
                    mTarget = child;
                    break;
                }
            }
        }
    }
    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        final int width = getMeasuredWidth();
        final int height = getMeasuredHeight();
        if (getChildCount() == 0)
            return;
        if (mTarget == null)
            ensureTarget();
        if (mTarget == null)
            return;
        mTarget.layout(
            getPaddingLeft(),
            getPaddingTop(),
            width - getPaddingRight(),
            height - getPaddingBottom()
        );
        final int prevWidth = mPrev.getMeasuredWidth();
        mPrev.layout(
            width / 2 - prevWidth / 2,
            getPaddingTop() + (int) adjustedPrevOffset,
            width / 2 + prevWidth / 2,
            getPaddingTop() + (int) adjustedPrevOffset + mPrev.getMeasuredHeight()
        );
        final int nextWidth = mNext.getMeasuredWidth();
        mNext.layout(
            width / 2 - nextWidth / 2,
            height - getPaddingBottom() - mNext.getMeasuredHeight(),
            width / 2 + nextWidth / 2,
            height - getPaddingBottom()
        );
    }
    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        if (mTarget == null)
            ensureTarget();
        if (mTarget == null)
            return;
        mTarget.measure(
            MeasureSpec.makeMeasureSpec(getMeasuredWidth() - getPaddingLeft() - getPaddingRight(), MeasureSpec.EXACTLY),
            MeasureSpec.makeMeasureSpec(getMeasuredHeight() - getPaddingTop() - getPaddingBottom(), MeasureSpec.EXACTLY)
        );
        mPrev.measure(
            MeasureSpec.makeMeasureSpec(getMeasuredWidth(), MeasureSpec.AT_MOST),
            MeasureSpec.makeMeasureSpec((int) adjustedPageTurnLayoutSize, MeasureSpec.EXACTLY)
        );
        mNext.measure(
            MeasureSpec.makeMeasureSpec(getMeasuredWidth(), MeasureSpec.AT_MOST),
            MeasureSpec.makeMeasureSpec((int) adjustedPageTurnLayoutSize, MeasureSpec.EXACTLY)
        );
    }
    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        if (mCurrentOverScroll == 0)
            return;
        if (mCurrentOverScroll > 0) {
            mRippleBound.set(
                getPaddingLeft(),
                (int) (getPaddingTop() - adjustedRippleGive),
                getMeasuredWidth() - getPaddingRight(),
                (int) (getPaddingTop() + adjustedPrevOffset + mPrev.getMeasuredHeight() + adjustedRippleGive)
            );
        }
        if (mCurrentOverScroll < 0) {
            final int height = getMeasuredHeight();
            mRippleBound.set(
                getPaddingLeft(),
                (int) (height - getPaddingBottom() - mNext.getMeasuredHeight() - adjustedRippleGive),
                getMeasuredWidth() - getPaddingRight(),
                height - getPaddingBottom()
            );
        }
        mRipplePaint.reset();
        mRipplePaint.setStyle(Paint.Style.FILL);
        int currentNightMode = getResources().getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK;
        switch (currentNightMode) {
            case Configuration.UI_MODE_NIGHT_YES:
                mRipplePaint.setColor(ContextCompat.getColor(getContext(), R.color.material_light_blue_700));
                break;
            case Configuration.UI_MODE_NIGHT_NO:
                mRipplePaint.setColor(ContextCompat.getColor(getContext(), R.color.material_light_blue_300));
                break;
        }
        canvas.drawCircle(
            (mRippleBound.left + mRippleBound.right) / 2F,
            mCurrentOverScroll > 0 ? mRippleBound.bottom : mRippleBound.top,
            mRippleSize,
            mRipplePaint
        );
    }
    private void onOverscroll(int overscroll) {
        if (mTarget == null)
            ensureTarget();
        if (mTarget == null)
            return;
        mCurrentOverScroll = overscroll;
        if (overscroll > 0) {
            mPrev.setVisibility(View.VISIBLE);
            mNext.setVisibility(View.INVISIBLE);
        } else if (overscroll < 0) {
            mPrev.setVisibility(View.INVISIBLE);
            mNext.setVisibility(View.VISIBLE);
        } else {
            mPrev.setVisibility(View.INVISIBLE);
            mNext.setVisibility(View.INVISIBLE);
        }
        if (Math.abs(overscroll) >= adjustedPageTurnLayoutSize) {
            if (!mRippleAnimator.isStarted() && mRippleSize != mRippleTargetSize) {
                mVibrator.vibrate(10);
                mRippleAnimator.setIntValues(mRippleSize, mRippleTargetSize);
                mRippleAnimator.start();
            }
        } else {
            if (!mRippleAnimator.isStarted() && mRippleSize != 0) {
                mRippleAnimator.setIntValues(mRippleSize, 0);
                mRippleAnimator.start();
            }
        }
        float clippedOverScrollTop = (overscroll > 0 ? 1 : -1) * Math.min(Math.abs(overscroll), adjustedPageTurnLayoutSize);
        mTarget.setTranslationY(clippedOverScrollTop);
    }
    private void onOverscrollEnd(int overscroll) {
        if (mTarget == null)
            ensureTarget();
        if (mTarget == null)
            return;
        mRippleAnimator.cancel();
        mRippleAnimator.setIntValues(mRippleSize, 0);
        mRippleAnimator.start();
        mPrev.setVisibility(View.INVISIBLE);
        mNext.setVisibility(View.INVISIBLE);
        ViewCompat.animate(mTarget)
            .setDuration(PAGE_TURN_ANIM_DURATION)
            .setInterpolator(new DecelerateInterpolator())
            .translationY(0);
        if (Math.abs(overscroll) > adjustedPageTurnLayoutSize && mOnPageTurnListener != null) {
            if (overscroll > 0)
                mOnPageTurnListener.onPrev(mCurrentPage-1);
            if (overscroll < 0)
                mOnPageTurnListener.onNext(mCurrentPage+1);
        }
    }
    // NestedScrollingParent
    private int mTotalUnconsumed = 0;
    @Override
    public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) {
        return isEnabled() && (nestedScrollAxes & ViewCompat.SCROLL_AXIS_VERTICAL) != 0;
    }
    @Override
    public void onNestedScrollAccepted(View child, View target, int axes) {
        mNestedScrollingParentHelper.onNestedScrollAccepted(child, target, axes);
        startNestedScroll(axes & ViewCompat.SCROLL_AXIS_VERTICAL);
        mTotalUnconsumed = 0;
    }
    @Override
    public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) {
        if (mTotalUnconsumed != 0 && dy > 0 == mTotalUnconsumed > 0) {
            if (Math.abs(dy) > Math.abs(mTotalUnconsumed)) {
                consumed[1] = dy - mTotalUnconsumed;
                mTotalUnconsumed = 0;
            } else {
                mTotalUnconsumed -= dy;
                consumed[1] = dy;
            }
            onOverscroll(mTotalUnconsumed);
        }
        final int[] parentConsumed = new int[2];
        if (dispatchNestedPreScroll(dx - consumed[0], dy - consumed[1], parentConsumed, null)) {
            consumed[0] += parentConsumed[0];
            consumed[1] += parentConsumed[1];
        }
    }
    @Override
    public void onNestedScroll(View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed) {
        final int[] mParentOffsetInWindow = new int[2];
        dispatchNestedScroll(dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed, mParentOffsetInWindow);
        final int dy = dyUnconsumed + mParentOffsetInWindow[1];
        if (mTotalUnconsumed == 0 && ((dy < 0 && !mShowPrev) || (dy > 0 && !mShowNext)))
            return;
        if (dy != 0) {
            mTotalUnconsumed -= dy;
            onOverscroll(mTotalUnconsumed);
        }
    }
    @Override
    public void onStopNestedScroll(View child) {
        mNestedScrollingParentHelper.onStopNestedScroll(child);
        if (Math.abs(mTotalUnconsumed) > 0) {
            onOverscrollEnd(mTotalUnconsumed);
            mTotalUnconsumed = 0;
        }
        stopNestedScroll();
    }
    // NestedScrollingChild
    @Override
    public void setNestedScrollingEnabled(boolean enabled) {
        mNestedScrollingChildHelper.setNestedScrollingEnabled(enabled);
    }
    @Override
    public boolean isNestedScrollingEnabled() {
        return mNestedScrollingChildHelper.isNestedScrollingEnabled();
    }
    @Override
    public boolean startNestedScroll(int axes) {
        return mNestedScrollingChildHelper.startNestedScroll(axes);
    }
    @Override
    public void stopNestedScroll() {
        mNestedScrollingChildHelper.stopNestedScroll();
    }
    @Override
    public boolean hasNestedScrollingParent() {
        return mNestedScrollingChildHelper.hasNestedScrollingParent();
    }
    @Override
    public boolean dispatchNestedScroll(int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed, @Nullable int[] offsetInWindow) {
        return mNestedScrollingChildHelper.dispatchNestedScroll(dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed, offsetInWindow);
    }
    @Override
    public boolean dispatchNestedPreScroll(int dx, int dy, @Nullable int[] consumed, @Nullable int[] offsetInWindow) {
        return mNestedScrollingChildHelper.dispatchNestedPreScroll(dx, dy, consumed, offsetInWindow);
    }
    @Override
    public boolean dispatchNestedFling(float velocityX, float velocityY, boolean consumed) {
        return mNestedScrollingChildHelper.dispatchNestedFling(velocityX, velocityY, consumed);
    }
    @Override
    public boolean dispatchNestedPreFling(float velocityX, float velocityY) {
        return mNestedScrollingChildHelper.dispatchNestedPreFling(velocityX, velocityY);
    }
    public interface OnPageTurnListener {
        void onPrev(int page);
        void onNext(int page);
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/view/ProgressCard.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/view/ProgressCard.kt
@@ -0,0 +1,72 @@
 package xyz.quaver.pupil.ui.view
 import android.content.Context
 import android.util.AttributeSet
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.cardview.widget.CardView
 import androidx.core.content.ContextCompat
 import androidx.core.graphics.drawable.DrawableCompat
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.databinding.ProgressCardViewBinding
 class ProgressCard @JvmOverloads constructor(context: Context, attr: AttributeSet? = null, defStyle: Int = R.attr.cardViewStyle) : CardView(context, attr, defStyle) {
    enum class Type {
        LOADING,
        CACHE,
        DOWNLOAD
    }
    var type: Type = Type.LOADING
        set(value) {
            field = value
            when (field) {
                Type.LOADING -> R.color.colorAccent
                Type.CACHE -> R.color.material_blue_700
                Type.DOWNLOAD -> R.color.material_green_a700
            }.let {
                val color = ContextCompat.getColor(context, it)
                DrawableCompat.setTint(binding.progressbar.progressDrawable, color)
            }
        }
    var progress: Int
        get() = binding.progressbar.progress
        set(value) {
            binding.progressbar.progress = value
        }
    var max: Int
        get() = binding.progressbar.max
        set(value) {
            binding.progressbar.max = value
            binding.progressbar.visibility =
                if (value == 0)
                    GONE
                else
                    VISIBLE
        }
    val binding = ProgressCardViewBinding.inflate(LayoutInflater.from(context), this)
    init {
        binding.content.setOnClickListener {
            performClick()
        }
        binding.content.setOnLongClickListener {
            performLongClick()
        }
    }
    override fun addView(child: View?, index: Int, params: ViewGroup.LayoutParams?) {
        if (childCount == 0)
            super.addView(child, index, params)
        else
            binding.content.addView(child, index, params)
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/view/TagChip.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/view/TagChip.kt
@@ -0,0 +1,100 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.ui.view
 import android.annotation.SuppressLint
 import android.content.Context
 import androidx.core.content.ContextCompat
 import com.google.android.material.chip.Chip
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.favoriteTags
 import xyz.quaver.pupil.types.Tag
 import xyz.quaver.pupil.util.translations
 import xyz.quaver.pupil.util.wordCapitalize
@SuppressLint("ViewConstructor")
 class TagChip(context: Context, _tag: Tag) : Chip(context) {
    val tag: Tag =
        _tag.let {
            when {
                it.area != null -> it
                else -> Tag("tag", _tag.tag)
            }
        }
    private val languages = context.resources.getStringArray(R.array.languages).map {
        it.split("|").let { split ->
            Pair(split[0], split[1])
        }
    }.toMap()
    init {
        when(tag.area) {
            "male" -> {
                setChipBackgroundColorResource(R.color.material_blue_700)
                setTextColor(ContextCompat.getColor(context, android.R.color.white))
                setCloseIconTintResource(android.R.color.white)
                chipIcon = ContextCompat.getDrawable(context, R.drawable.gender_male_white)
            }
            "female" -> {
                setChipBackgroundColorResource(R.color.material_pink_600)
                setTextColor(ContextCompat.getColor(context, android.R.color.white))
                setCloseIconTintResource(android.R.color.white)
                chipIcon = ContextCompat.getDrawable(context, R.drawable.gender_female_white)
            }
        }
        if (favoriteTags.contains(tag))
            setChipBackgroundColorResource(R.color.material_orange_500)
        isCloseIconVisible = true
        closeIcon = ContextCompat.getDrawable(context,
            if (favoriteTags.contains(tag))
                R.drawable.ic_star_filled
            else
                R.drawable.ic_star_empty
        )
        setOnCloseIconClickListener {
            if (favoriteTags.contains(tag)) {
                favoriteTags.remove(tag)
                closeIcon = ContextCompat.getDrawable(context, R.drawable.ic_star_empty)
                when(tag.area) {
                    "male" -> setChipBackgroundColorResource(R.color.material_blue_700)
                    "female" -> setChipBackgroundColorResource(R.color.material_pink_600)
                    else -> chipBackgroundColor = null
                }
            } else {
                favoriteTags.add(tag)
                closeIcon = ContextCompat.getDrawable(context, R.drawable.ic_star_filled)
                setChipBackgroundColorResource(R.color.material_orange_500)
            }
        }
        text = when (tag.area) {
            "language" -> languages[tag.tag]
            else -> (translations[tag.tag] ?: tag.tag).wordCapitalize()
        }
        setEnsureMinTouchTargetSize(false)
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/ui/view/TagChipGroup.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/view/TagChipGroup.kt
@@ -0,0 +1,100 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.ui.view
 import android.content.Context
 import android.content.res.TypedArray
 import android.util.AttributeSet
 import android.util.Log
 import com.google.android.material.chip.Chip
 import com.google.android.material.chip.ChipGroup
 import kotlinx.coroutines.*
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.types.Tag
 import xyz.quaver.pupil.types.Tags
 class TagChipGroup @JvmOverloads constructor(context: Context, attr: AttributeSet? = null, attrStyle: Int = R.attr.chipGroupStyle, val tags: Tags = Tags()) : ChipGroup(context, attr, attrStyle), MutableSet<Tag> by tags {
    object Defaults {
        const val maxChipSize = 10
    }
    var maxChipSize: Int = Defaults.maxChipSize
        set(value) {
            field = value
            refresh()
        }
    private val moreView = Chip(context).apply {
        text = "…"
        setEnsureMinTouchTargetSize(false)
        setOnClickListener {
            removeView(this)
            for (i in maxChipSize until tags.size) {
                val tag = tags.elementAt(i)
                addView(TagChip(context, tag).apply {
                    setOnClickListener {
                        onClickListener?.invoke(tag)
                    }
                })
            }
        }
    }
    var onClickListener: ((Tag) -> Unit)? = null
    private fun applyAttributes(attr: TypedArray) {
        maxChipSize = attr.getInt(R.styleable.TagChipGroup_maxTag, Defaults.maxChipSize)
    }
    private var refreshJob: Job? = null
    fun refresh() {
        refreshJob?.cancel()
        this.removeAllViews()
        refreshJob = CoroutineScope(Dispatchers.Main).launch {
            tags.take(maxChipSize).map {
                CoroutineScope(Dispatchers.Default).async {
                    TagChip(context, it).apply {
                        setOnClickListener {
                            onClickListener?.invoke(this.tag)
                        }
                    }
                }
            }.forEach {
                addView(it.await())
            }
            if (maxChipSize > 0 && tags.size > maxChipSize)
                addView(moreView)
        }
    }
    init {
        applyAttributes(context.obtainStyledAttributes(attr, R.styleable.TagChipGroup))
        refresh()
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/util/FileUtils.java
+++ b/app/src/main/java/xyz/quaver/pupil/util/FileUtils.java
@@ -1,178 +0,0 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.util;
 /*
 * Copyright (C) 2007-2008 OpenIntents.org
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 import android.content.ContentUris;
 import android.content.Context;
 import android.database.Cursor;
 import android.net.Uri;
 import android.os.Build;
 import android.provider.DocumentsContract;
 import android.provider.MediaStore;
 /**
 * @version 2009-07-03
 * @author Peli
 * @version 2013-12-11
 * @author paulburke (ipaulpro)
 */
 public class FileUtils {
    /**
     * Get a file path from a Uri. This will get the the path for Storage Access
     * Framework Documents, as well as the _data field for the MediaStore and
     * other file-based ContentProviders.
     *
     * @param context The context.
     * @param uri The Uri to query.
     * @author paulburke
     */
    public static String getPath(final Context context, final Uri uri) {
        // DocumentProvider
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT && DocumentsContract.isDocumentUri(context, uri)) {
            // ExternalStorageProvider
            if (isExternalStorageDocument(uri)) {
                final String docId = DocumentsContract.getDocumentId(uri);
                final String[] split = docId.split(":");
                final String type = split[0];
                if ("primary".equalsIgnoreCase(type)) {
                    return context.getExternalFilesDir(null).getParentFile().getParentFile().getParentFile().getParent() + "/" + split[1];
                }
                // TODO handle non-primary volumes
            }
            // DownloadsProvider
            else if (isDownloadsDocument(uri)) {
                final String id = DocumentsContract.getDocumentId(uri);
                final Uri contentUri = ContentUris.withAppendedId(
                        Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
                return getDataColumn(context, contentUri, null, null);
            }
            // MediaProvider
            else if (isMediaDocument(uri)) {
                final String docId = DocumentsContract.getDocumentId(uri);
                final String[] split = docId.split(":");
                final String type = split[0];
                Uri contentUri = null;
                if ("image".equals(type)) {
                    contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
                } else if ("video".equals(type)) {
                    contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
                } else if ("audio".equals(type)) {
                    contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
                }
                final String selection = "_id=?";
                final String[] selectionArgs = new String[] {
                        split[1]
                };
                return getDataColumn(context, contentUri, selection, selectionArgs);
            }
        }
        // MediaStore (and general)
        else if ("content".equalsIgnoreCase(uri.getScheme())) {
            return getDataColumn(context, uri, null, null);
        }
        // File
        else if ("file".equalsIgnoreCase(uri.getScheme())) {
            return uri.getPath();
        }
        return null;
    }
    /**
     * Get the value of the data column for this Uri. This is useful for
     * MediaStore Uris, and other file-based ContentProviders.
     *
     * @param context The context.
     * @param uri The Uri to query.
     * @param selection (Optional) Filter used in the query.
     * @param selectionArgs (Optional) Selection arguments used in the query.
     * @return The value of the _data column, which is typically a file path.
     */
    public static String getDataColumn(Context context, Uri uri, String selection,
                                       String[] selectionArgs) {
        Cursor cursor = null;
        final String column = "_data";
        final String[] projection = {
                column
        };
        try {
            cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
                    null);
            if (cursor != null && cursor.moveToFirst()) {
                final int column_index = cursor.getColumnIndexOrThrow(column);
                return cursor.getString(column_index);
            }
        } finally {
            if (cursor != null)
                cursor.close();
        }
        return null;
    }
    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is ExternalStorageProvider.
     */
    public static boolean isExternalStorageDocument(Uri uri) {
        return "com.android.externalstorage.documents".equals(uri.getAuthority());
    }
    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is DownloadsProvider.
     */
    public static boolean isDownloadsDocument(Uri uri) {
        return "com.android.providers.downloads.documents".equals(uri.getAuthority());
    }
    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is MediaProvider.
     */
    public static boolean isMediaDocument(Uri uri) {
        return "com.android.providers.media.documents".equals(uri.getAuthority());
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/util/ItemClickSupport.java
+++ b/app/src/main/java/xyz/quaver/pupil/util/ItemClickSupport.java
@@ -1,107 +0,0 @@
 package xyz.quaver.pupil.util;
 import android.view.View;
 import androidx.annotation.NonNull;
 import androidx.recyclerview.widget.RecyclerView;
 import xyz.quaver.pupil.R;
 /*
  Source: http://www.littlerobots.nl/blog/Handle-Android-RecyclerView-Clicks/
  USAGE:
  ItemClickSupport.addTo(mRecyclerView).setOnItemClickListener(new ItemClickSupport.OnItemClickListener() {
      @Override
      public void onItemClicked(RecyclerView recyclerView, int position, View v) {
          // do it
      }
  });
 */
 public class ItemClickSupport {
    private final RecyclerView mRecyclerView;
    private OnItemClickListener mOnItemClickListener;
    private OnItemLongClickListener mOnItemLongClickListener;
    private View.OnClickListener mOnClickListener = new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (mOnItemClickListener != null) {
                RecyclerView.ViewHolder holder = mRecyclerView.getChildViewHolder(v);
                mOnItemClickListener.onItemClicked(mRecyclerView, holder.getAdapterPosition(), v);
            }
        }
    };
    private View.OnLongClickListener mOnLongClickListener = new View.OnLongClickListener() {
        @Override
        public boolean onLongClick(View v) {
            if (mOnItemLongClickListener != null) {
                RecyclerView.ViewHolder holder = mRecyclerView.getChildViewHolder(v);
                return mOnItemLongClickListener.onItemLongClicked(mRecyclerView, holder.getAdapterPosition(), v);
            }
            return false;
        }
    };
    private RecyclerView.OnChildAttachStateChangeListener mAttachListener
            = new RecyclerView.OnChildAttachStateChangeListener() {
        @Override
        public void onChildViewAttachedToWindow(@NonNull View view) {
            if (mOnItemClickListener != null) {
                view.setOnClickListener(mOnClickListener);
            }
            if (mOnItemLongClickListener != null) {
                view.setOnLongClickListener(mOnLongClickListener);
            }
        }
        @Override
        public void onChildViewDetachedFromWindow(@NonNull View view) {
        }
    };
    private ItemClickSupport(RecyclerView recyclerView) {
        mRecyclerView = recyclerView;
        mRecyclerView.setTag(R.id.item_click_support, this);
        mRecyclerView.addOnChildAttachStateChangeListener(mAttachListener);
    }
    public static ItemClickSupport addTo(RecyclerView view) {
        ItemClickSupport support = (ItemClickSupport) view.getTag(R.id.item_click_support);
        if (support == null) {
            support = new ItemClickSupport(view);
        }
        return support;
    }
    public static ItemClickSupport removeFrom(RecyclerView view) {
        ItemClickSupport support = (ItemClickSupport) view.getTag(R.id.item_click_support);
        if (support != null) {
            support.detach(view);
        }
        return support;
    }
    public ItemClickSupport setOnItemClickListener(OnItemClickListener listener) {
        mOnItemClickListener = listener;
        return this;
    }
    public ItemClickSupport setOnItemLongClickListener(OnItemLongClickListener listener) {
        mOnItemLongClickListener = listener;
        return this;
    }
    private void detach(RecyclerView view) {
        view.removeOnChildAttachStateChangeListener(mAttachListener);
        view.setTag(R.id.item_click_support, null);
    }
    public interface OnItemClickListener {
        void onItemClicked(RecyclerView recyclerView, int position, View v);
    }
    public interface OnItemLongClickListener {
        boolean onItemLongClicked(RecyclerView recyclerView, int position, View v);
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/util/ItemClickSupport.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/ItemClickSupport.kt
@@ -0,0 +1,69 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.util
 import android.view.View
 import androidx.recyclerview.widget.RecyclerView
 import xyz.quaver.pupil.R
 class ItemClickSupport(private val recyclerView: RecyclerView) {
    var onItemClickListener: ((RecyclerView, Int, View) -> Unit)? = null
    var onItemLongClickListener: ((RecyclerView, Int, View) -> Boolean)? = null
    init {
        recyclerView.apply {
            setTag(R.id.item_click_support, this)
            addOnChildAttachStateChangeListener(object: RecyclerView.OnChildAttachStateChangeListener {
                override fun onChildViewAttachedToWindow(view: View) {
                    onItemClickListener?.let { listener ->
                        view.setOnClickListener {
                            recyclerView.getChildViewHolder(view).let { holder ->
                                listener.invoke(recyclerView, holder.adapterPosition, view)
                            }
                        }
                    }
                    onItemLongClickListener?.let { listener ->
                        view.setOnLongClickListener {
                            recyclerView.getChildViewHolder(view).let { holder ->
                                listener.invoke(recyclerView, holder.adapterPosition, view)
                            }
                        }
                    }
                }
                override fun onChildViewDetachedFromWindow(view: View) {
                    // Do Nothing
                }
            })
        }
    }
    fun detach() {
        recyclerView.apply {
            clearOnChildAttachStateChangeListeners()
            setTag(R.id.item_click_support, null)
        }
    }
    companion object {
        fun addTo(view: RecyclerView) = view.let { removeFrom(it); ItemClickSupport(it) }
        fun removeFrom(view: RecyclerView) = (view.tag as? ItemClickSupport)?.detach()
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/util/Preferences.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/Preferences.kt
@@ -0,0 +1,48 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.util
 import android.content.SharedPreferences
 import kotlin.reflect.KClass
 lateinit var preferences: SharedPreferences
 object Preferences: SharedPreferences by preferences {
    val defMap = mapOf(
        String::class to "",
        Int::class to -1,
        Long::class to -1L,
        Boolean::class to false,
        Set::class to emptySet<Any>()
    )
    operator fun set(key: String, value: String) = edit().putString(key, value).apply()
    operator fun set(key: String, value: Int) = edit().putInt(key, value).apply()
    operator fun set(key: String, value: Long) = edit().putLong(key, value).apply()
    operator fun set(key: String, value: Boolean) = edit().putBoolean(key, value).apply()
    operator fun set(key: String, value: Set<String>) = edit().putStringSet(key, value).apply()
    @Suppress("UNCHECKED_CAST")
    inline operator fun <reified T: Any> get(key: String, defaultVal: T = defMap[T::class] as T): T = (all[key] as? T) ?: defaultVal
    fun remove(key: String) {
        edit().remove(key).apply()
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/util/SavedSet.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/SavedSet.kt
@@ -0,0 +1,93 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.util
 import com.google.firebase.crashlytics.FirebaseCrashlytics
 import kotlinx.serialization.ExperimentalSerializationApi
 import kotlinx.serialization.KSerializer
 import kotlinx.serialization.builtins.ListSerializer
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.serializer
 import java.io.File
 class SavedSet <T: Any> (private val file: File, private val any: T, private val set: MutableSet<T> = mutableSetOf()) : MutableSet<T> by set {
    @Suppress("UNCHECKED_CAST")
    @OptIn(ExperimentalSerializationApi::class)
    val serializer: KSerializer<List<T>>
        get() = ListSerializer(serializer(any::class.java) as KSerializer<T>)
    init {
        if (!file.exists()) {
            file.parentFile?.mkdirs()
            save()
        }
        load()
    }
    @Synchronized
    fun load() {
        set.clear()
        kotlin.runCatching {
            Json.decodeFromString(serializer, file.readText())
        }.onSuccess {
            set.addAll(it)
        }.onFailure {
            FirebaseCrashlytics.getInstance().recordException(it)
        }
    }
    @Synchronized
    @OptIn(ExperimentalSerializationApi::class)
    fun save() {
        file.writeText(Json.encodeToString(serializer, set.toList()))
    }
    @Synchronized
    override fun add(element: T): Boolean {
        set.remove(element)
        return set.add(element).also {
            save()
        }
    }
    @Synchronized
    override fun addAll(elements: Collection<T>): Boolean {
        set.removeAll(elements)
        return set.addAll(elements).also {
            save()
        }
    }
    @Synchronized
    override fun remove(element: T): Boolean {
        return set.remove(element).also {
            save()
        }
    }
    @Synchronized
    override fun clear() {
        set.clear()
        save()
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/util/SetLineOverlap.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/SetLineOverlap.kt
@@ -1,37 +0,0 @@
 package xyz.quaver.pupil.util
 import android.graphics.Paint
 import android.text.style.LineHeightSpan
 class SetLineOverlap(private val overlap: Boolean) : LineHeightSpan {
    companion object {
        private var originalBottom = 15
        private var originalDescent = 13
        private var overlapSaved = false
    }
    override fun chooseHeight(
        text: CharSequence?,
        start: Int,
        end: Int,
        spanstartv: Int,
        lineHeight: Int,
        fm: Paint.FontMetricsInt?
    ) {
        fm ?: return
        if (overlap) {
            if (overlapSaved) {
                originalBottom = fm.bottom
                originalDescent = fm.descent
                overlapSaved = true
            }
            fm.bottom += fm.top
            fm.descent += fm.top
        } else {
            fm.bottom = originalBottom
            fm.descent = originalDescent
            overlapSaved = false
        }
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/util/camera.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/camera.kt
@@ -0,0 +1,119 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
@file:Suppress("DEPRECATION", "Recycle")
 package xyz.quaver.pupil.util
 import android.content.Context
 import android.content.pm.PackageManager
 import android.graphics.ImageFormat
 import android.graphics.SurfaceTexture
 import android.hardware.Camera
 import android.view.Surface
 import android.view.WindowManager
 import com.google.android.gms.tasks.Task
 import com.google.mlkit.vision.common.InputImage
 import com.google.mlkit.vision.face.Face
 import com.google.mlkit.vision.face.FaceDetection
 import com.google.mlkit.vision.face.FaceDetectorOptions
 /** Check if this device has a camera */
 private fun Context.checkCameraHardware() =
    this.packageManager.hasSystemFeature(PackageManager.FEATURE_CAMERA)
 private fun openFrontCamera() : Pair<Camera?, Int> {
    var camera: Camera? = null
    var cameraID: Int = -1
    val cameraInfo = Camera.CameraInfo()
    for (i in 0 until Camera.getNumberOfCameras()) {
        Camera.getCameraInfo(i, cameraInfo)
        if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_FRONT)
            runCatching { Camera.open(i) }.getOrNull()?.let { camera = it; cameraID = i }
        if (camera != null) break
    }
    return Pair(camera, cameraID)
 }
 val orientations = mapOf(
    Surface.ROTATION_0 to 0,
    Surface.ROTATION_90 to 90,
    Surface.ROTATION_180 to 180,
    Surface.ROTATION_270 to 270,
 )
 private fun getRotation(context: Context, cameraID: Int): Int {
    val cameraRotation = Camera.CameraInfo().also { Camera.getCameraInfo(cameraID, it) }.orientation
    val rotation = orientations[(context.getSystemService(Context.WINDOW_SERVICE) as WindowManager).defaultDisplay.rotation] ?: error("")
    return (cameraRotation + rotation) % 360
 }
 var camera: Camera? = null
 var surfaceTexture: SurfaceTexture? = null
 private val detector = FaceDetection.getClient(
    FaceDetectorOptions.Builder()
        .setClassificationMode(FaceDetectorOptions.CLASSIFICATION_MODE_ALL)
        .build()
 )
 private var process: Task<List<Face>>? = null
 fun startCamera(context: Context, callback: (List<Face>) -> Unit) {
    if (camera != null) closeCamera()
    val cameraID = openFrontCamera().let { (cam, cameraID) ->
        cam ?: return
        camera = cam
        cameraID
    }
    with (camera!!) {
        parameters = parameters.apply {
            setPreviewSize(640, 480)
            previewFormat = ImageFormat.NV21
        }
        setPreviewTexture(surfaceTexture ?: SurfaceTexture(0).also {
            surfaceTexture = it
        })
        startPreview()
        setPreviewCallback { bytes, _ ->
            if (process?.isComplete == false)
                return@setPreviewCallback
            val rotation = getRotation(context, cameraID)
            val image = InputImage.fromByteArray(bytes, 640, 480, rotation, InputImage.IMAGE_FORMAT_NV21)
            process = detector.process(image)
                .addOnSuccessListener(callback)
        }
    }
 }
 fun closeCamera() {
    camera?.setPreviewCallback(null)
    camera?.stopPreview()
    surfaceTexture?.release()
    surfaceTexture = null
    camera?.release()
    camera = null
 }
--- a/app/src/main/java/xyz/quaver/pupil/util/download/Cache.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/download/Cache.kt
@@ -1,237 +0,0 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.util.download
 import android.content.Context
 import android.content.ContextWrapper
 import android.util.Base64
 import androidx.documentfile.provider.DocumentFile
 import androidx.preference.PreferenceManager
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.async
 import kotlinx.coroutines.withContext
 import kotlinx.serialization.ImplicitReflectionSerializer
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.parse
 import kotlinx.serialization.stringify
 import xyz.quaver.Code
 import xyz.quaver.hitomi.GalleryBlock
 import xyz.quaver.hitomi.Reader
 import xyz.quaver.pupil.util.*
 import java.io.File
 import java.net.URL
 class Cache(context: Context) : ContextWrapper(context) {
    private val preference = PreferenceManager.getDefaultSharedPreferences(this)
    // Search in this order
    // Download -> Cache
    fun getCachedGallery(galleryID: Int) : DocumentFile? {
        var file = getDownloadDirectory(this).findFile(galleryID.toString())
        if (file?.exists() == true)
            return file
        file = DocumentFile.fromFile(File(cacheDir, "imageCache/$galleryID"))
        return if (file.exists())
             file
        else
             null
    }
    @UseExperimental(ImplicitReflectionSerializer::class)
    fun getCachedMetadata(galleryID: Int) : Metadata? {
        val file = (getCachedGallery(galleryID) ?: return null).findFile(".metadata")
        if (file?.exists() != true)
            return null
        return try {
            Json.parse(file.readText(this))
        } catch (e: Exception) {
            //File corrupted
            file.delete()
            null
        }
    }
    @UseExperimental(ImplicitReflectionSerializer::class)
    fun setCachedMetadata(galleryID: Int, metadata: Metadata) {
        val file = getCachedGallery(galleryID)?.findFile(".metadata") ?:
        DocumentFile.fromFile(File(cacheDir, "imageCache/$galleryID").also {
            if (!it.exists())
                it.mkdirs()
        }).createFile("null", ".metadata") ?: return
        file.writeText(this, Json.stringify(metadata))
    }
    suspend fun getThumbnail(galleryID: Int): String? {
        val metadata = Cache(this).getCachedMetadata(galleryID)
        val thumbnail = if (metadata?.thumbnail == null)
            withContext(Dispatchers.IO) {
                val thumbnails = getGalleryBlock(galleryID)?.thumbnails
                try {
                    Base64.encodeToString(URL(thumbnails?.firstOrNull()).readBytes(), Base64.DEFAULT)
                } catch (e: Exception) {
                    null
                }
            }
        else
            metadata.thumbnail
        setCachedMetadata(
            galleryID,
            Metadata(Cache(this).getCachedMetadata(galleryID), thumbnail = thumbnail)
        )
        return thumbnail
    }
    suspend fun getGalleryBlock(galleryID: Int): GalleryBlock? {
        val metadata = Cache(this).getCachedMetadata(galleryID)
        val source = mapOf(
            Code.HITOMI to { xyz.quaver.hitomi.getGalleryBlock(galleryID) },
            Code.HIYOBI to { xyz.quaver.hiyobi.getGalleryBlock(galleryID) }
        )
        val galleryBlock = if (metadata?.galleryBlock == null)
           source.entries.map {
               CoroutineScope(Dispatchers.IO).async {
                   kotlin.runCatching {
                       it.value.invoke()
                   }.getOrNull()
               }
           }.firstOrNull {
               it.await() != null
           }?.await()
        else
            metadata.galleryBlock
        setCachedMetadata(
            galleryID,
            Metadata(Cache(this).getCachedMetadata(galleryID), galleryBlock = galleryBlock)
        )
        return galleryBlock
    }
    fun getReaderOrNull(galleryID: Int): Reader? {
        return getCachedMetadata(galleryID)?.reader
    }
    suspend fun getReader(galleryID: Int): Reader? {
        val metadata = getCachedMetadata(galleryID)
        val mirrors = preference.getString("mirrors", null)?.split('>') ?: listOf()
        val sources = mapOf(
            Code.HITOMI to { xyz.quaver.hitomi.getReader(galleryID) },
            Code.HIYOBI to { xyz.quaver.hiyobi.getReader(galleryID) }
        ).let {
            if (mirrors.isNotEmpty())
                it.toSortedMap(
                    Comparator { o1, o2 ->
                        mirrors.indexOf(o1.name) - mirrors.indexOf(o2.name)
                    }
                )
            else
                it
        }
        val reader = if (metadata?.reader == null) {
            CoroutineScope(Dispatchers.IO).async {
                var retval: Reader? = null
                for (source in sources) {
                    retval = kotlin.runCatching {
                        source.value.invoke()
                    }.getOrNull()
                    if (retval != null)
                        break
                }
                retval
            }.await()
        } else
            metadata.reader
        if (reader != null)
            setCachedMetadata(
                galleryID,
                Metadata(Cache(this).getCachedMetadata(galleryID), readers = reader)
            )
        return reader
    }
    fun getImages(galleryID: Int): List<DocumentFile?>? {
        val gallery = getCachedGallery(galleryID) ?: return null
        val reader = getReaderOrNull(galleryID) ?: return null
        val images = gallery.listFiles()
        return reader.galleryInfo.indices.map { index ->
            images.firstOrNull { file -> file.name?.startsWith("%05d".format(index)) == true }
        }
    }
    fun putImage(galleryID: Int, name: String, data: ByteArray) {
        val cache = getCachedGallery(galleryID) ?:
        DocumentFile.fromFile(File(cacheDir, "imageCache/$galleryID").also {
            if (!it.exists())
                it.mkdirs()
        }) ?: return
        if (!Regex("""^[0-9]+.+$""").matches(name))
            throw IllegalArgumentException("File name is not a number")
        cache.let {
            if (it.findFile(name) != null)
                it
            else
                it.createFile("null", name)
        }?.writeBytes(this, data)
    }
    fun moveToDownload(galleryID: Int) {
        val cache = getCachedGallery(galleryID)
        if (cache != null) {
            val download = getDownloadDirectory(this)
            if (!download.isParentOf(cache)) {
                cache.copyRecursively(this, download)
                cache.deleteRecursively()
            }
        } else
            getDownloadDirectory(this).createDirectory(galleryID.toString())
    }
    fun isDownloading(galleryID: Int) = getCachedMetadata(galleryID)?.isDownloading == true
    fun setDownloading(galleryID: Int, isDownloading: Boolean) {
        setCachedMetadata(galleryID, Metadata(getCachedMetadata(galleryID), isDownloading = isDownloading))
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/util/download/DownloadWorker.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/download/DownloadWorker.kt
@@ -1,391 +0,0 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.util.download
 import android.app.PendingIntent
 import android.content.Context
 import android.content.ContextWrapper
 import android.content.Intent
 import android.content.SharedPreferences
 import android.util.SparseArray
 import androidx.core.app.NotificationCompat
 import androidx.core.app.NotificationManagerCompat
 import androidx.core.app.TaskStackBuilder
 import androidx.preference.PreferenceManager
 import com.crashlytics.android.Crashlytics
 import io.fabric.sdk.android.Fabric
 import kotlinx.coroutines.*
 import okhttp3.*
 import okio.*
 import xyz.quaver.Code
 import xyz.quaver.hitomi.Reader
 import xyz.quaver.hitomi.getReferer
 import xyz.quaver.hitomi.urlFromUrlFromHash
 import xyz.quaver.hiyobi.cookie
 import xyz.quaver.hiyobi.createImgList
 import xyz.quaver.hiyobi.user_agent
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.ui.ReaderActivity
 import java.io.IOException
 import java.util.concurrent.Executors
 import java.util.concurrent.LinkedBlockingQueue
@UseExperimental(ExperimentalCoroutinesApi::class)
 class DownloadWorker private constructor(context: Context) : ContextWrapper(context) {
    private val preferences : SharedPreferences = PreferenceManager.getDefaultSharedPreferences(this)
    //region ProgressListener
    @Suppress("UNCHECKED_CAST")
    private val progressListener = object: ProgressListener {
        override fun update(tag: Any?, bytesRead: Long, contentLength: Long, done: Boolean) {
            val (galleryID, index) = (tag as? Pair<Int, Int>) ?: return
            if (!done && progress[galleryID]?.get(index)?.isFinite() == true)
                progress[galleryID]?.set(index, bytesRead * 100F / contentLength)
        }
    }
    interface ProgressListener {
        fun update(tag: Any?, bytesRead : Long, contentLength: Long, done: Boolean)
    }
    class ProgressResponseBody(
        val tag: Any?,
        val responseBody: ResponseBody,
        val progressListener : ProgressListener
    ) : ResponseBody() {
        private var bufferedSource : BufferedSource? = null
        override fun contentLength() = responseBody.contentLength()
        override fun contentType() = responseBody.contentType() ?: null
        override fun source(): BufferedSource {
            if (bufferedSource == null)
                bufferedSource = Okio.buffer(source(responseBody.source()))
            return bufferedSource!!
        }
        private fun source(source: Source) = object: ForwardingSource(source) {
            var totalBytesRead = 0L
            override fun read(sink: Buffer, byteCount: Long): Long {
                val bytesRead = super.read(sink, byteCount)
                totalBytesRead += if (bytesRead == -1L) 0L else bytesRead
                progressListener.update(tag, totalBytesRead, responseBody.contentLength(), bytesRead == -1L)
                return bytesRead
            }
        }
    }
    //endregion
    //region Singleton
    companion object {
        @Volatile private var instance: DownloadWorker? = null
        fun getInstance(context: Context) =
            instance ?: synchronized(this) {
                instance ?: DownloadWorker(context).also { instance = it }
            }
    }
    //endregion
    val notificationManager = NotificationManagerCompat.from(context)
    val queue = LinkedBlockingQueue<Int>()
    /*
    * KEY
    *  primary galleryID
    *  secondary index
    * PRIMARY VALUE
    *  MutableList -> Download in progress
    *  null -> Loading / Gallery doesn't exist
    * SECONDARY VALUE
    *  0 <= value < 100 -> Download in progress
    *  Float.POSITIVE_INFINITY -> Download completed
    *  Float.NaN -> Exception
    */
    val progress = SparseArray<MutableList<Float>?>()
    /*
    * KEY
    *  primary galleryID
    *  secondary index
    * PRIMARY VALUE
    *  MutableList -> Download in progress / Loading
    *  null -> Gallery doesn't exist
    * SECONDARY VALUE
    *  Throwable -> Exception
    *  null -> Download in progress / Loading
    */
    val exception = SparseArray<MutableList<Throwable?>?>()
    val notification = SparseArray<NotificationCompat.Builder>()
    private val loop = loop()
    private val worker = SparseArray<Job?>()
    @Volatile var nRunners = 0
    private val client = OkHttpClient.Builder()
        .addInterceptor { chain ->
            val request = chain.request()
            var response = chain.proceed(request)
            var retry = preferences.getInt("retry", 3)
            while (!response.isSuccessful && retry > 0) {
                response = chain.proceed(request)
                retry--
            }
            response.newBuilder()
                .body(ProgressResponseBody(request.tag(), response.body(), progressListener))
                .build()
        }
        .dispatcher(Dispatcher(Executors.newFixedThreadPool(4)))
        .build()
    fun stop() {
        queue.clear()
        loop.cancel()
        for (i in 0..worker.size()) {
            val galleryID = worker.keyAt(i)
            Cache(this@DownloadWorker).setDownloading(galleryID, false)
            worker[galleryID]?.cancel()
        }
        client.dispatcher().cancelAll()
        progress.clear()
        exception.clear()
        notification.clear()
        notificationManager.cancelAll()
        nRunners = 0
    }
    fun cancel(galleryID: Int) {
        queue.remove(galleryID)
        worker[galleryID]?.cancel()
        client.dispatcher().queuedCalls()
            .filter {
                @Suppress("UNCHECKED_CAST")
                (it.request().tag() as? Pair<Int, Int>)?.first == galleryID
            }
            .forEach {
                it.cancel()
            }
        progress.remove(galleryID)
        exception.remove(galleryID)
        notification.remove(galleryID)
        notificationManager.cancel(galleryID)
        if (progress.indexOfKey(galleryID) >= 0) {
            Cache(this@DownloadWorker).setDownloading(galleryID, false)
            nRunners--
        }
    }
    fun isCompleted(galleryID: Int) = progress[galleryID]?.all { !it.isFinite() } == true
    private fun queueDownload(galleryID: Int, reader: Reader, index: Int, callback: Callback) {
        val cache = Cache(this@DownloadWorker).getImages(galleryID)
        val lowQuality = preferences.getBoolean("low_quality", false)
        //Cache exists :P
        cache?.get(index)?.let {
            progress[galleryID]?.set(index, Float.POSITIVE_INFINITY)
            notify(galleryID)
            if (isCompleted(galleryID)) {
                with(Cache(this@DownloadWorker)) {
                    if (isDownloading(galleryID)) {
                        moveToDownload(galleryID)
                        setDownloading(galleryID, false)
                    }
                }
                nRunners--
            }
            return
        }
        val request = Request.Builder().apply {
            when (reader.code) {
                Code.HITOMI -> {
                    url(
                        urlFromUrlFromHash(
                            galleryID,
                            reader.galleryInfo[index],
                            if (lowQuality) "webp" else null
                        )
                    )
                    addHeader("Referer", getReferer(galleryID))
                }
                Code.HIYOBI -> {
                    url(createImgList(galleryID, reader, lowQuality)[index].path)
                    addHeader("User-Agent", user_agent)
                    addHeader("Cookie", cookie)
                }
                else -> {
                    //shouldn't be called anyway
                }
            }
            tag(galleryID to index)
        }.build()
        client.newCall(request).enqueue(callback)
    }
    private fun download(galleryID: Int) = CoroutineScope(Dispatchers.IO).launch {
        val reader = Cache(this@DownloadWorker).getReader(galleryID)
        //gallery doesn't exist
        if (reader == null) {
            progress.put(galleryID, null)
            exception.put(galleryID, null)
            Cache(this@DownloadWorker).setDownloading(galleryID, false)
            nRunners--
            return@launch
        }
        progress.put(galleryID, reader.galleryInfo.map { 0F }.toMutableList())
        exception.put(galleryID, reader.galleryInfo.map { null }.toMutableList())
        if (notification[galleryID] == null)
            initNotification(galleryID)
        notification[galleryID].setContentTitle(reader.title)
        notify(galleryID)
        for (i in reader.galleryInfo.indices) {
            val callback = object : Callback {
                override fun onFailure(call: Call, e: IOException) {
                    if (Fabric.isInitialized())
                        Crashlytics.logException(e)
                    progress[galleryID]?.set(i, Float.NaN)
                    exception[galleryID]?.set(i, e)
                    notify(galleryID)
                    if (isCompleted(galleryID)) {
                        val cache = Cache(this@DownloadWorker)
                        if (cache.isDownloading(galleryID)) {
                            cache.moveToDownload(galleryID)
                            cache.setDownloading(galleryID, false)
                        }
                        nRunners--
                    }
                }
                override fun onResponse(call: Call, response: Response) {
                    response.body().use {
                        val res = it.bytes()
                        val ext =
                            call.request().url().encodedPath().split('.').last()
                        Cache(this@DownloadWorker).putImage(galleryID, "%05d.%s".format(i, ext), res)
                        progress[galleryID]?.set(i, Float.POSITIVE_INFINITY)
                    }
                    notify(galleryID)
                    if (isCompleted(galleryID)) {
                        val cache = Cache(this@DownloadWorker)
                        if (cache.isDownloading(galleryID)) {
                            cache.moveToDownload(galleryID)
                            cache.setDownloading(galleryID, false)
                        }
                        nRunners--
                    }
                }
            }
            queueDownload(galleryID, reader, i, callback)
        }
    }
    private fun notify(galleryID: Int) {
        val max = progress[galleryID]?.size ?: 0
        val progress = progress[galleryID]?.count { !it.isFinite() } ?: 0
        if (isCompleted(galleryID))
            notification[galleryID]
                ?.setContentText(getString(R.string.reader_notification_complete))
                ?.setProgress(0, 0, false)
        else
            notification[galleryID]
                ?.setProgress(max, progress, false)
                ?.setContentText("$progress/$max")
        if (Cache(this).isDownloading(galleryID) && notification[galleryID] != null)
            notificationManager.notify(galleryID, notification[galleryID].build())
        else
            notificationManager.cancel(galleryID)
    }
    private fun initNotification(galleryID: Int) {
        val intent = Intent(this, ReaderActivity::class.java).apply {
            putExtra("galleryID", galleryID)
        }
        val pendingIntent = TaskStackBuilder.create(this).run {
            addNextIntentWithParentStack(intent)
            getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT)
        }
        notification.put(galleryID, NotificationCompat.Builder(this, "download").apply {
            setContentTitle(getString(R.string.reader_loading))
            setContentText(getString(R.string.reader_notification_text))
            setSmallIcon(android.R.drawable.stat_sys_download)                                  // had to use this because old android doesn't support VectorDrawable on Notification :P
            setContentIntent(pendingIntent)
            setProgress(0, 0, true)
        })
    }
    private fun loop() = CoroutineScope(Dispatchers.Default).launch {
        while (true) {
            if (queue.isEmpty() || nRunners > preferences.getInt("max_download", 4))
                continue
            val galleryID = queue.poll() ?: continue
            if (progress.indexOfKey(galleryID) >= 0)    // Gallery already downloading!
                continue
            initNotification(galleryID)
            if (Cache(this@DownloadWorker).isDownloading(galleryID))
                notificationManager.notify(galleryID, notification[galleryID].build())
            worker.put(galleryID, download(galleryID))
            nRunners++
        }
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/util/download/Metadata.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/download/Metadata.kt
@@ -1,44 +0,0 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.util.download
 import kotlinx.serialization.Serializable
 import xyz.quaver.hitomi.GalleryBlock
 import xyz.quaver.hitomi.Reader
@Serializable
 data class Metadata(
    val thumbnail: String? = null,
    val galleryBlock: GalleryBlock? = null,
    val reader: Reader? = null,
    val isDownloading: Boolean? = null
 ) {
    constructor(
        metadata: Metadata?,
        thumbnail: String? = null,
        galleryBlock: GalleryBlock? = null,
        readers: Reader? = null,
        isDownloading: Boolean? = null
    ) : this(
        thumbnail ?: metadata?.thumbnail,
        galleryBlock ?: metadata?.galleryBlock,
        readers ?: metadata?.reader,
        isDownloading ?: metadata?.isDownloading
    )
 }
--- a/app/src/main/java/xyz/quaver/pupil/util/downloader/Cache.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/downloader/Cache.kt
@@ -0,0 +1,297 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.util.downloader
 import android.content.Context
 import android.content.ContextWrapper
 import android.net.Uri
 import kotlinx.coroutines.*
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.decodeFromString
 import kotlinx.serialization.encodeToString
 import kotlinx.serialization.json.Json
 import okhttp3.Request
 import xyz.quaver.io.FileX
 import xyz.quaver.io.util.*
 import xyz.quaver.pupil.client
 import xyz.quaver.pupil.hitomi.*
 import java.io.File
 import java.io.IOException
 import java.util.concurrent.ConcurrentHashMap
@Serializable
 data class OldReader(
    val code: String,
    val galleryInfo: OldGalleryInfo
 )
@Serializable
 data class OldGalleryInfo(
    val language_localname: String? = null,
    val language: String? = null,
    val date: String? = null,
    val files: List<OldGalleryFiles>,
    val id: Int? = null,
    val type: String? = null,
    val title: String? = null
 )
@Serializable
 data class OldGalleryFiles(
    val width: Int,
    val hash: String,
    val haswebp: Int = 0,
    val name: String,
    val height: Int,
    val hasavif: Int = 0,
    val hasavifsmalltn: Int? = 0
 )
@Serializable
 data class OldMetadata(
    var galleryBlock: GalleryBlock? = null,
    var reader: OldReader? = null,
    var imageList: MutableList<String?>? = null
 ) {
    fun copy(): OldMetadata = OldMetadata(galleryBlock, reader, imageList?.let { MutableList(it.size) { i -> it[i] } })
 }
@Serializable
 data class Metadata(
    var galleryBlock: GalleryBlock? = null,
    var galleryInfo: GalleryInfo? = null,
    var imageList: MutableList<String?>? = null
 ) {
    constructor(old: OldMetadata) : this(
        old.galleryBlock,
        old.reader?.galleryInfo?.let { oldGalleryInfo ->
            GalleryInfo(
                oldGalleryInfo.id.toString(),
                oldGalleryInfo.title ?: "",
                null,
                oldGalleryInfo.language,
                oldGalleryInfo.type ?: "",
                oldGalleryInfo.date ?: "",
                files = oldGalleryInfo.files.map {
                    GalleryFiles(
                        it.width,
                        it.hash,
                        it.haswebp,
                        it.name,
                        it.height,
                        it.hasavif,
                        it.hasavifsmalltn
                    )
                }
            )
        },
        old.imageList
    )
    fun copy(): Metadata = Metadata(galleryBlock, galleryInfo, imageList?.let { MutableList(it.size) { i -> it[i] } })
 }
 class Cache private constructor(context: Context, val galleryID: Int) : ContextWrapper(context) {
    companion object {
        val instances = ConcurrentHashMap<Int, Cache>()
        fun getInstance(context: Context, galleryID: Int) =
            instances[galleryID] ?: synchronized(this) {
                instances[galleryID] ?: Cache(context, galleryID).also { instances.put(galleryID, it) }
            }
        @Synchronized
        fun delete(context: Context, galleryID: Int) {
            File(context.cacheDir, "imageCache/$galleryID").deleteRecursively()
            instances.remove(galleryID)
        }
    }
    init {
        cacheFolder.mkdirs()
    }
    var metadata = kotlin.runCatching {
        findFile(".metadata")?.readText()?.let { metadata ->
            kotlin.runCatching {
                Json.decodeFromString<Metadata>(metadata)
            }.getOrElse {
                Metadata(json.decodeFromString<OldMetadata>(metadata))
            }
        }
    }.onFailure { it.printStackTrace() }.getOrNull() ?: Metadata()
    val downloadFolder: FileX?
        get() = DownloadManager.getInstance(this).getDownloadFolder(galleryID)
    val cacheFolder: FileX
        get() = FileX(this, cacheDir, "imageCache/$galleryID").also {
            if (!it.exists())
                it.mkdirs()
        }
    fun findFile(fileName: String): FileX? =
         downloadFolder?.let { downloadFolder -> downloadFolder.getChild(fileName).let {
            if (it.exists()) it else null
        } } ?: cacheFolder.getChild(fileName).let {
            if (it.exists()) it else null
        }
    @Suppress("BlockingMethodInNonBlockingContext")
    fun setMetadata(change: (Metadata) -> Unit) {
        change.invoke(metadata)
        val file = cacheFolder.getChild(".metadata")
        kotlin.runCatching {
            if (!file.exists()) {
                file.createNewFile()
            }
            file.writeText(Json.encodeToString(metadata))
        }
    }
    suspend fun getGalleryBlock(): GalleryBlock? {
        return metadata.galleryBlock
            ?: withContext(Dispatchers.IO) {
                try {
                    getGalleryBlock(galleryID).also {
                        setMetadata { metadata -> metadata.galleryBlock = it }
                    }
                } catch (e: Exception) { return@withContext null }
            }
    }
    @Suppress("BlockingMethodInNonBlockingContext")
    suspend fun getThumbnail(): Uri =
        findFile(".thumbnail")?.uri
            ?: getGalleryBlock()?.thumbnails?.firstOrNull()?.let { withContext(Dispatchers.IO) {
                kotlin.runCatching {
                    val request = Request.Builder()
                        .url(it)
                        .header("Referer", "https://hitomi.la/")
                        .build()
                    client.newCall(request).execute().also { if (it.code() != 200) throw IOException() }.body()?.use { it.bytes() }
                }.getOrNull()?.let { thumbnail -> kotlin.runCatching {
                    cacheFolder.getChild(".thumbnail").also {
                        if (!it.exists())
                            it.createNewFile()
                        it.writeBytes(thumbnail)
                    }
                }.getOrNull()?.uri }
            } } ?: Uri.EMPTY
    suspend fun getGalleryInfo(): GalleryInfo? {
        return metadata.galleryInfo
            ?: withContext(Dispatchers.IO) {
                try {
                    getGalleryInfo(galleryID).also {
                        setMetadata { metadata ->
                            metadata.galleryInfo = it
                            if (metadata.imageList == null)
                                metadata.imageList = MutableList(it.files.size) { null }
                        }
                    }
                } catch (e: Exception) {
                    null
                }
            }
    }
    fun getImage(index: Int): FileX? =
        metadata.imageList?.getOrNull(index)?.let { findFile(it) }
    @Suppress("BlockingMethodInNonBlockingContext")
    suspend fun putImage(index: Int, fileName: String, data: ByteArray) = coroutineScope {
        val file = cacheFolder.getChild(fileName)
        if (!file.exists())
            file.createNewFile()
        file.writeBytes(data)
        setMetadata { metadata -> metadata.imageList!![index] = fileName }
    }
    private val lock = ConcurrentHashMap<Int, Mutex>()
    @Suppress("BlockingMethodInNonBlockingContext")
    fun moveToDownload() = CoroutineScope(Dispatchers.IO).launch {
        val downloadFolder = downloadFolder ?: return@launch
        if (lock[galleryID]?.isLocked == true)
            return@launch
        (lock[galleryID] ?: Mutex().also { lock[galleryID] = it }).withLock {
            val cacheMetadata = cacheFolder.getChild(".metadata")
            val downloadMetadata = downloadFolder.getChild(".metadata")
            if (!cacheMetadata.exists())
                return@launch
            if (cacheMetadata.exists()) {
                kotlin.runCatching {
                    if (!downloadMetadata.exists())
                        downloadMetadata.createNewFile()
                    downloadMetadata.writeText(Json.encodeToString(metadata))
                }
            }
            val cacheThumbnail = cacheFolder.getChild(".thumbnail")
            val downloadThumbnail = downloadFolder.getChild(".thumbnail")
            if (cacheThumbnail.exists()) {
                kotlin.runCatching {
                    if (!downloadThumbnail.exists())
                        downloadThumbnail.createNewFile()
                    downloadThumbnail.outputStream()?.use { target -> target.channel.truncate(0L); cacheThumbnail.inputStream()?.use { source ->
                        source.copyTo(target)
                    } }
                    cacheThumbnail.delete()
                }
            }
            metadata.imageList?.forEach { imageName ->
                imageName ?: return@forEach
                val target = downloadFolder.getChild(imageName)
                val source = cacheFolder.getChild(imageName)
                if (!source.exists())
                    return@forEach
                kotlin.runCatching {
                    if (!target.exists())
                        target.createNewFile()
                    target.outputStream()?.use { target -> target.channel.truncate(0L); source.inputStream()?.use { source ->
                        source.copyTo(target)
                    } }
                }
            }
            cacheFolder.deleteRecursively()
        }
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/util/downloader/DownloadManager.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/downloader/DownloadManager.kt
@@ -0,0 +1,127 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.util.downloader
 import android.content.Context
 import android.content.ContextWrapper
 import android.util.Log
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlinx.serialization.decodeFromString
 import kotlinx.serialization.encodeToString
 import kotlinx.serialization.json.Json
 import okhttp3.Call
 import xyz.quaver.io.FileX
 import xyz.quaver.io.util.deleteRecursively
 import xyz.quaver.io.util.getChild
 import xyz.quaver.io.util.readText
 import xyz.quaver.io.util.writeText
 import xyz.quaver.pupil.client
 import xyz.quaver.pupil.services.DownloadService
 import xyz.quaver.pupil.util.Preferences
 import xyz.quaver.pupil.util.formatDownloadFolder
 class DownloadManager private constructor(context: Context) : ContextWrapper(context) {
    companion object {
        @Volatile private var instance: DownloadManager? = null
        fun getInstance(context: Context) =
            instance ?: synchronized(this) {
                instance ?: DownloadManager(context).also { instance = it }
            }
    }
    val defaultDownloadFolder = FileX(this, getExternalFilesDir(null)!!)
    val downloadFolder: FileX
        get() = kotlin.runCatching {
            FileX(this, Preferences.get<String>("download_folder"))
        }.getOrElse {
            Preferences["download_folder"] = defaultDownloadFolder.uri.toString()
            defaultDownloadFolder
        }
    private var prevDownloadFolder: FileX? = null
    private var downloadFolderMapInstance: MutableMap<Int, String>? = null
    val downloadFolderMap: MutableMap<Int, String>
        @Synchronized
        get() {
            if (prevDownloadFolder != downloadFolder) {
                prevDownloadFolder = downloadFolder
                downloadFolderMapInstance = run {
                    val file = downloadFolder.getChild(".download")
                    val data = if (file.exists())
                        kotlin.runCatching {
                            file.readText()?.let{ Json.decodeFromString<MutableMap<Int, String>>(it) }
                        }.onFailure { file.delete() }.getOrNull()
                    else
                        null
                    data ?: run {
                        file.createNewFile()
                        mutableMapOf()
                    }
                }
            }
            return downloadFolderMapInstance ?: mutableMapOf()
        }
    @Synchronized
    fun isDownloading(galleryID: Int): Boolean {
        val isThisGallery: (Call) -> Boolean = { !it.isCanceled && (it.request().tag() as? DownloadService.Tag)?.galleryID == galleryID }
        return downloadFolderMap.containsKey(galleryID)
                && client.dispatcher().let { it.queuedCalls().any(isThisGallery) || it.runningCalls().any(isThisGallery) }
    }
    @Synchronized
    fun getDownloadFolder(galleryID: Int): FileX? =
        downloadFolderMap[galleryID]?.let { downloadFolder.getChild(it) }
    fun addDownloadFolder(galleryID: Int) = CoroutineScope(Dispatchers.IO).launch {
        val name = Cache.getInstance(this@DownloadManager, galleryID).getGalleryBlock()
            ?.formatDownloadFolder() ?: return@launch
        val folder = downloadFolder.getChild(name)
        downloadFolderMap[galleryID] = name
        downloadFolder.getChild(".download").let { if (!it.exists()) it.createNewFile() }
        downloadFolder.getChild(".download").writeText(Json.encodeToString(downloadFolderMap))
        if (folder.exists()) return@launch
        folder.mkdir()
    }
    @Synchronized
    fun deleteDownloadFolder(galleryID: Int) {
        downloadFolderMap[galleryID]?.let {
            kotlin.runCatching {
                downloadFolder.getChild(it).deleteRecursively()
                downloadFolderMap.remove(galleryID)
                downloadFolder.getChild(".download").let { if (!it.exists()) it.createNewFile() }
                downloadFolder.getChild(".download").writeText(Json.encodeToString(downloadFolderMap))
            }
        }
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/util/file.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/file.kt
@@ -19,133 +19,49 @@
 package xyz.quaver.pupil.util
 import android.content.Context
-import android.net.Uri
+import kotlinx.coroutines.CoroutineScope
-import androidx.core.content.FileProvider
+import kotlinx.coroutines.Dispatchers
-import androidx.documentfile.provider.DocumentFile
+import kotlinx.coroutines.launch
-import androidx.preference.PreferenceManager
+import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 import xyz.quaver.pupil.histories
 import xyz.quaver.pupil.util.downloader.Cache
 import xyz.quaver.pupil.util.downloader.DownloadManager
 import java.io.File
 import java.net.URL
 import java.nio.charset.Charset
 import java.util.*
-fun getCachedGallery(context: Context, galleryID: Int) =
+val mutex = Mutex()
-    getDownloadDirectory(context).findFile(galleryID.toString()) ?:
+fun cleanCache(context: Context) = CoroutineScope(Dispatchers.IO).launch {
-    DocumentFile.fromFile(File(context.cacheDir, "imageCache/$galleryID"))
+    if (mutex.isLocked) return@launch
-fun getDownloadDirectory(context: Context) : DocumentFile {
+    mutex.withLock {
-    val uri = PreferenceManager.getDefaultSharedPreferences(context).getString("dl_location", null).let {
+        val cacheFolder = File(context.cacheDir, "imageCache")
-        if (it != null)
+        val downloadManager = DownloadManager.getInstance(context)
-            Uri.parse(it)
+
-        else
+        val limit = (Preferences.get<String>("cache_limit").toLongOrNull() ?: 0L)*1024*1024*1024
-            Uri.fromFile(context.getExternalFilesDir(null))
+
        if (limit == 0L) return@withLock
        val cacheSize = {
            var size = 0L
            cacheFolder.walk().forEach {
                size += it.length()
            }
-    return if (uri.toString().startsWith("file"))
+            size
        DocumentFile.fromFile(File(uri.path!!))
    else
        DocumentFile.fromTreeUri(context, uri) ?: DocumentFile.fromFile(context.getExternalFilesDir(null)!!)
        }
-fun convertUpdateUri(context: Context, uri: Uri) : Uri =
+        if (cacheSize.invoke() > limit)
-    if (uri.toString().startsWith("file"))
+            while (cacheSize.invoke() > limit/2) {
-        FileProvider.getUriForFile(context, context.applicationContext.packageName + ".provider", File(uri.path!!.substringAfter("file:///")))
+                val caches = cacheFolder.list() ?: return@withLock
    else
        uri
-fun URL.download(context: Context, to: DocumentFile, onDownloadProgress: ((Long, Long) -> Unit)? = null) {
+                synchronized(histories) {
-    context.contentResolver.openOutputStream(to.uri).use { out ->
+                    (histories.firstOrNull {
-        out!!
+                        caches.contains(it.toString()) && !downloadManager.isDownloading(it)
-
+                    } ?: return@withLock).let {
-        with(openConnection()) {
+                        Cache.delete(context, it)
            val fileSize = contentLength.toLong()
            getInputStream().use {
                var bytesCopied: Long = 0
                val buffer = ByteArray(DEFAULT_BUFFER_SIZE)
                var bytes = it.read(buffer)
                while (bytes >= 0) {
                    out.write(buffer, 0, bytes)
                    bytesCopied += bytes
                    onDownloadProgress?.invoke(bytesCopied, fileSize)
                    bytes = it.read(buffer)
                }
            }
        }
    }
 }
 fun DocumentFile.isParentOf(file: DocumentFile?) : Boolean {
    var parent = file?.parentFile
    while (parent != null) {
        if (this.uri.path == parent.uri.path)
            return true
        parent = parent.parentFile
    }
    return false
 }
 fun DocumentFile.reader(context: Context, charset: Charset = Charsets.UTF_8) = context.contentResolver.openInputStream(uri)!!.reader(charset)
 fun DocumentFile.readBytes(context: Context) = context.contentResolver.openInputStream(uri)!!.readBytes()
 fun DocumentFile.readText(context: Context, charset: Charset = Charsets.UTF_8) = reader(context, charset).use { it.readText() }
 fun DocumentFile.writeBytes(context: Context, array: ByteArray) = context.contentResolver.openOutputStream(uri)!!.write(array)
 fun DocumentFile.writeText(context: Context, text: String, charset: Charset = Charsets.UTF_8) = writeBytes(context, text.toByteArray(charset))
 fun DocumentFile.copyRecursively(
    context: Context,
    target: DocumentFile
 ) {
    if (!exists())
        throw Exception("The source file doesn't exist.")
    if (this.isFile) {
        target.let {
            if (it.findFile(name!!) != null)
                it
            else
                createFile("null", name!!)!!
        }.writeBytes(
            context,
            readBytes(context)
        )
    } else if (this.isDirectory) {
        target.createDirectory(name!!).also { newTarget ->
            listFiles().forEach { child ->
                child.copyRecursively(context, newTarget!!)
                    }
                }
            }
    }
 fun DocumentFile.deleteRecursively() {
    if (this.isDirectory)
        listFiles().forEach {
            it.deleteRecursively()
 }
    this.delete()
 }
 fun DocumentFile.walk(state: LinkedList<DocumentFile> = LinkedList()) : Queue<DocumentFile> {
    if (state.isEmpty())
        state.push(this)
    listFiles().forEach {
        state.push(it)
        if (it.isDirectory) {
            it.walk(state)
        }
    }
    return state
 }
 fun File.copyTo(context: Context, target: DocumentFile) = target.writeBytes(context, this.readBytes())
--- a/app/src/main/java/xyz/quaver/pupil/util/history.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/history.kt
@@ -1,83 +0,0 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2019  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.util
 import kotlinx.serialization.ImplicitReflectionSerializer
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.JsonConfiguration
 import kotlinx.serialization.parseList
 import kotlinx.serialization.stringify
 import java.io.File
 class Histories(private val file: File) : ArrayList<Int>() {
    init {
        if (!file.exists())
            file.parentFile?.mkdirs()
        try {
            load()
        } catch (e: Exception) {
            save()
        }
    }
    @UseExperimental(ImplicitReflectionSerializer::class)
    fun load() : Histories {
        return apply {
            super.clear()
            addAll(
                Json(JsonConfiguration.Stable).parseList(
                    file.bufferedReader().use { it.readText() }
                )
            )
        }
    }
    @UseExperimental(ImplicitReflectionSerializer::class)
    fun save() {
        file.writeText(Json(JsonConfiguration.Stable).stringify(this))
    }
    override fun add(element: Int): Boolean {
        load()
        if (contains(element))
            super.remove(element)
        super.add(0, element)
        save()
        return true
    }
    override fun remove(element: Int): Boolean {
        load()
        val retval = super.remove(element)
        save()
        return retval
    }
    override fun clear() {
        super.clear()
        save()
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/util/lock.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/lock.kt
@@ -21,9 +21,10 @@ package xyz.quaver.pupil.util
 import android.content.Context
 import android.content.ContextWrapper
 import androidx.core.content.ContextCompat
-import kotlinx.serialization.*
+import kotlinx.serialization.Serializable
 import kotlinx.serialization.decodeFromString
 import kotlinx.serialization.encodeToString
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.JsonConfiguration
 import java.io.File
 import java.security.MessageDigest
@@ -42,7 +43,7 @@ fun hashWithSalt(password: String): Pair<String, String> {
    return Pair(hash(password+salt), salt)
 }
-val source = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
+const val source = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
@Serializable
 data class Lock(val type: Type, val hash: String, val salt: String) {
@@ -73,7 +74,6 @@ class LockManager(base: Context): ContextWrapper(base) {
        load()
    }
    @UseExperimental(ImplicitReflectionSerializer::class)
    private fun load() {
        val lock = File(ContextCompat.getDataDir(this), "lock.json")
@@ -82,17 +82,16 @@ class LockManager(base: Context): ContextWrapper(base) {
            lock.writeText("[]")
        }
-        locks = ArrayList(Json(JsonConfiguration.Stable).parseList(lock.readText()))
+        locks = Json.decodeFromString(lock.readText())
    }
    @UseExperimental(ImplicitReflectionSerializer::class)
    private fun save() {
        val lock = File(ContextCompat.getDataDir(this), "lock.json")
        if (!lock.exists())
            lock.createNewFile()
-        lock.writeText(Json(JsonConfiguration.Stable).stringify(locks?.toList() ?: listOf()))
+        lock.writeText(Json.encodeToString(locks?.toList() ?: listOf()))
    }
    fun add(lock: Lock) {
--- a/app/src/main/java/xyz/quaver/pupil/util/misc.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/misc.kt
@@ -18,30 +18,48 @@
 package xyz.quaver.pupil.util
 import android.Manifest
 import android.annotation.SuppressLint
 import android.app.Activity
 import android.content.Context
 import android.content.pm.PackageManager
 import android.os.Build
 import android.util.Log
 import androidx.activity.result.ActivityResultLauncher
 import androidx.appcompat.app.AlertDialog
 import androidx.core.app.ActivityCompat
 import androidx.core.content.ContextCompat
 import com.google.firebase.crashlytics.FirebaseCrashlytics
 import kotlinx.serialization.json.*
 import okhttp3.OkHttpClient
 import okhttp3.Request
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.hitomi.GalleryBlock
 import xyz.quaver.pupil.hitomi.GalleryInfo
 import xyz.quaver.pupil.hitomi.imageUrlFromImage
 import java.util.*
 import kotlin.collections.ArrayList
-@UseExperimental(ExperimentalStdlibApi::class)
+@OptIn(ExperimentalStdlibApi::class)
 fun String.wordCapitalize() : String {
    val result = ArrayList<String>()
    @SuppressLint("DefaultLocale")
    for (word in this.split(" "))
-        result.add(word.capitalize(Locale.US))
+        result.add(word.replaceFirstChar { if (it.isLowerCase()) it.titlecase(Locale.US) else it.toString() })
    return result.joinToString(" ")
 }
-fun byteToString(byte: Long, precision : Int = 1) : String {
+private val suffix = listOf(
    val suffix = listOf(
    "B",
    "kB",
    "MB",
    "GB",
    "TB" //really?
 )
 fun byteToString(byte: Long, precision : Int = 1) : String {
    var size = byte.toDouble(); var suffixIndex = 0
    while (size >= 1024) {
@@ -50,5 +68,127 @@ fun byteToString(byte: Long, precision : Int = 1) : String {
    }
    return "%.${precision}f ${suffix[suffixIndex]}".format(size)
 }
 /**
 * Convert android generated ID to requestCode
 * to prevent java.lang.IllegalArgumentException: Can only use lower 16 bits for requestCode
 *
 * https://stackoverflow.com/questions/38072322/generate-16-bit-unique-ids-in-android-for-startactivityforresult
 */
 fun Int.normalizeID() = this.and(0xFFFF)
 fun OkHttpClient.Builder.proxyInfo(proxyInfo: ProxyInfo) = this.apply {
    proxy(proxyInfo.proxy())
    proxyInfo.authenticator()?.let {
        proxyAuthenticator(it)
    }
 }
 val formatMap = mapOf<String, GalleryBlock.() -> (String)>(
    "-id-" to { id.toString() },
    "-title-" to { title },
    "-artist-" to { if (artists.isNotEmpty()) artists.joinToString() else "N/A" },
    "-group-" to { if (groups.isNotEmpty()) groups.joinToString() else "N/A" }
    // TODO
 )
 /**
 * Formats download folder name with given Metadata
 */
 fun GalleryBlock.formatDownloadFolder(): String =
    Preferences["download_folder_name", "[-id-] -title-"].let {
        formatMap.entries.fold(it) { str, (k, v) ->
            str.replace(k, v.invoke(this), true)
        }
    }.replace(Regex("""[*\\|"?><:/]"""), "").ellipsize(127)
 fun GalleryBlock.formatDownloadFolderTest(format: String): String =
    format.let {
        formatMap.entries.fold(it) { str, (k, v) ->
            str.replace(k, v.invoke(this), true)
        }
    }.replace(Regex("""[*\\|"?><:/]"""), "").ellipsize(127)
 suspend fun GalleryInfo.getRequestBuilders(): List<Request.Builder> {
    val galleryID = this.id.toIntOrNull() ?: 0
    return this.files.map {
        Request.Builder()
            .url(
                runCatching {
                    imageUrlFromImage(galleryID, it, false)
                }
                .onFailure {
                    FirebaseCrashlytics.getInstance().recordException(it)
                }
                .getOrDefault("https://a/")
            )
            .header("Referer", "https://hitomi.la/")
    }
 }
 fun byteCount(codePoint: Int): Int = when (codePoint) {
    in 0 ..< 0x80 -> 1
    in 0x80 ..< 0x800 -> 2
    in 0x800 ..< 0x10000 -> 3
    in 0x10000 ..< 0x110000 -> 4
    else -> 0
 }
 fun String.ellipsize(n: Int): String = buildString {
    var count = 0
    var index = 0
    val codePointLength = this@ellipsize.codePointCount(0, this@ellipsize.length)
    while (index < codePointLength) {
        val nextCodePoint = this@ellipsize.codePointAt(index)
        val nextByte = byteCount(nextCodePoint)
        if (count + nextByte > 124) {
            append("…")
            break
        }
        appendCodePoint(nextCodePoint)
        count += nextByte
        index++
    }
 }
 operator fun JsonElement.get(index: Int) =
    this.jsonArray[index]
 operator fun JsonElement.get(tag: String) =
    this.jsonObject[tag]
 fun JsonElement.getOrNull(tag: String) = kotlin.runCatching {
    this.jsonObject.getOrDefault(tag, null)
 }.getOrNull()
 val JsonElement.content
    get() = this.jsonPrimitive.contentOrNull
 fun checkNotificationEnabled(context: Context) =
    Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU ||
    ContextCompat.checkSelfPermission(context, Manifest.permission.POST_NOTIFICATIONS) == PackageManager.PERMISSION_GRANTED
 fun showNotificationPermissionExplanationDialog(context: Context) {
    AlertDialog.Builder(context)
        .setTitle(R.string.warning)
        .setMessage(R.string.notification_denied)
        .setPositiveButton(android.R.string.ok) { _, _ -> }
        .show()
 }
 fun requestNotificationPermission(
    activity: Activity,
    requestPermissionLauncher: ActivityResultLauncher<String>,
    showRationale: Boolean = true,
    ifGranted: () -> Unit,
 ) {
    when {
        checkNotificationEnabled(activity) -> ifGranted()
        showRationale && ActivityCompat.shouldShowRequestPermissionRationale(activity, Manifest.permission.POST_NOTIFICATIONS) ->
            showNotificationPermissionExplanationDialog(activity)
        else ->
            requestPermissionLauncher.launch(Manifest.permission.POST_NOTIFICATIONS)
    }
 }
--- a/app/src/main/java/xyz/quaver/pupil/util/proxy.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/proxy.kt
@@ -0,0 +1,58 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.util
 import android.content.Context
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.decodeFromString
 import kotlinx.serialization.encodeToString
 import kotlinx.serialization.json.Json
 import okhttp3.Authenticator
 import okhttp3.Credentials
 import java.net.InetSocketAddress
 import java.net.Proxy
@Serializable
 data class ProxyInfo(
    val type: Proxy.Type,
    val host: String? = null,
    val port: Int? = null,
    val username: String? = null,
    val password: String? = null
 ) {
    fun proxy() : Proxy {
        return if (host.isNullOrBlank() || port == null)
            return Proxy.NO_PROXY
        else
            Proxy(type, InetSocketAddress.createUnresolved(host, port))
    }
    fun authenticator(): Authenticator? = if (username.isNullOrBlank() || password.isNullOrBlank()) null else
            Authenticator { _, response ->
                val credential = Credentials.basic(username, password)
                response.request().newBuilder()
                    .header("Proxy-Authorization", credential)
                    .build()
            }
 }
 fun getProxyInfo(): ProxyInfo =
    Json.decodeFromString(Preferences["proxy", Json.encodeToString(ProxyInfo(Proxy.Type.DIRECT))])
--- a/app/src/main/java/xyz/quaver/pupil/util/translation.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/translation.kt
@@ -0,0 +1,68 @@
 /*
 *     Pupil, Hitomi.la viewer for Android
 *     Copyright (C) 2020  tom5079
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 package xyz.quaver.pupil.util
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlinx.serialization.decodeFromString
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.jsonArray
 import kotlinx.serialization.json.jsonPrimitive
 import okhttp3.Request
 import xyz.quaver.pupil.client
 import java.io.IOException
 import java.util.*
 private val filesURL = "https://api.github.com/repos/tom5079/Pupil/git/trees/tags"
 private val contentURL = "https://raw.githubusercontent.com/tom5079/Pupil/tags/"
 var translations: Map<String, String> = run {
    updateTranslations()
    emptyMap()
 }
    private set
@Suppress("BlockingMethodInNonBlockingContext")
 fun updateTranslations() = CoroutineScope(Dispatchers.IO).launch {
    translations = emptyMap()
    kotlin.runCatching {
        translations = Json.decodeFromString<Map<String, String>>(client.newCall(
            Request.Builder()
                .url(contentURL + "${Preferences["tag_translation", ""].let { if (it.isEmpty()) Locale.getDefault().language else it }}.json")
                .build()
        ).execute().also { if (it.code() != 200) return@launch }.body()?.use { it.string() } ?: return@launch).filterValues { it.isNotEmpty() }
    }
 }
 fun getAvailableLanguages(): List<String> {
    val languages = Locale.getISOLanguages()
    val json = Json.parseToJsonElement(client.newCall(
        Request.Builder()
            .url(filesURL)
            .build()
    ).execute().also { if (it.code() != 200) throw IOException() }.body()?.use { it.string() } ?: return emptyList())
    return listOf("en") + (json["tree"]?.jsonArray?.mapNotNull {
        val name = it["path"]?.jsonPrimitive?.content?.takeWhile { c -> c != '.' }
        languages.firstOrNull { code -> code.equals(name, ignoreCase = true) }
    } ?: emptyList())
 }
--- a/app/src/main/java/xyz/quaver/pupil/util/update.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/update.kt
@@ -18,49 +18,48 @@
 package xyz.quaver.pupil.util
-import android.app.PendingIntent
+import android.app.DownloadManager
 import android.content.Context
-import android.content.Intent
+import android.net.Uri
-import android.webkit.MimeTypeMap
+import android.webkit.URLUtil
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.app.NotificationCompat
 import androidx.core.app.NotificationManagerCompat
 import androidx.lifecycle.Lifecycle
 import androidx.preference.PreferenceManager
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlinx.serialization.json.*
 import okhttp3.Call
 import okhttp3.Callback
 import okhttp3.Request
 import okhttp3.Response
 import ru.noties.markwon.Markwon
-import xyz.quaver.pupil.BuildConfig
+import xyz.quaver.pupil.*
-import xyz.quaver.pupil.R
+import xyz.quaver.pupil.types.Tag
 import java.io.File
 import java.io.IOException
 import java.net.URL
 import java.util.*
 fun getReleases(url: String) : JsonArray {
    return try {
        URL(url).readText().let {
-            Json(JsonConfiguration.Stable).parse(JsonArray.serializer(), it)
+            Json.parseToJsonElement(it).jsonArray
        }
    } catch (e: Exception) {
        JsonArray(emptyList())
    }
 }
-fun checkUpdate(context: Context, url: String) : JsonObject? {
+fun checkUpdate(url: String) : JsonObject? {
    val releases = getReleases(url)
    if (releases.isEmpty())
        return null
    return releases.firstOrNull {
-        if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean("beta", false))
+        Preferences["beta"] || it.jsonObject["prerelease"]?.jsonPrimitive?.booleanOrNull == false
            true
        else
            it.jsonObject["prerelease"]?.boolean == false
    }?.let {
-        if (it.jsonObject["tag_name"]?.content == BuildConfig.VERSION_NAME)
+        if (it.jsonObject["tag_name"]?.jsonPrimitive?.contentOrNull == BuildConfig.VERSION_NAME)
            null
        else
            it.jsonObject
@@ -69,14 +68,13 @@ fun checkUpdate(context: Context, url: String) : JsonObject? {
 fun getApkUrl(releases: JsonObject) : String? {
    return releases["assets"]?.jsonArray?.firstOrNull {
-        Regex("Pupil-v.+\\.apk").matches(it.jsonObject["name"]?.content ?: "")
+        Regex("Pupil-v.+\\.apk").matches(it.jsonObject["name"]?.jsonPrimitive?.contentOrNull ?: "")
    }.let {
-        it?.jsonObject?.get("browser_download_url")?.content
+        it?.jsonObject?.get("browser_download_url")?.jsonPrimitive?.contentOrNull
    }
 }
-const val UPDATE_NOTIFICATION_ID = 384823
+fun checkUpdate(context: Context, force: Boolean = false) {
 fun checkUpdate(context: AppCompatActivity, force: Boolean = false) {
    val preferences = PreferenceManager.getDefaultSharedPreferences(context)
    val ignoreUpdateUntil = preferences.getLong("ignore_update_until", 0)
@@ -85,7 +83,7 @@ fun checkUpdate(context: AppCompatActivity, force: Boolean = false) {
        return
    fun extractReleaseNote(update: JsonObject, locale: Locale) : String {
-        val markdown = update["body"]!!.content
+        val markdown = update["body"]!!.jsonPrimitive.content
        val target = when(locale.language) {
            "ko" -> "한국어"
@@ -123,12 +121,12 @@ fun checkUpdate(context: AppCompatActivity, force: Boolean = false) {
            }
        }
-        return context.getString(R.string.update_release_note, update["tag_name"]?.content, result.toString())
+        return context.getString(R.string.update_release_note, update["tag_name"]?.jsonPrimitive?.contentOrNull, result.toString())
    }
    CoroutineScope(Dispatchers.Default).launch {
        val update =
-            checkUpdate(context, context.getString(R.string.release_url)) ?: return@launch
+            checkUpdate(context.getString(R.string.release_url)) ?: return@launch
        val url = getApkUrl(update) ?: return@launch
@@ -136,66 +134,37 @@ fun checkUpdate(context: AppCompatActivity, force: Boolean = false) {
            setTitle(R.string.update_title)
            val msg = extractReleaseNote(update, Locale.getDefault())
            setMessage(Markwon.create(context).toMarkdown(msg))
-            setPositiveButton(android.R.string.yes) { _, _ ->
+            setPositiveButton(android.R.string.ok) { _, _ ->
-
+                if (!checkNotificationEnabled(context)) {
-                val notificationManager = NotificationManagerCompat.from(context)
+                    showNotificationPermissionExplanationDialog(context)
-                val builder = NotificationCompat.Builder(context, "download").apply {
+                    return@setPositiveButton
                    setContentTitle(context.getString(R.string.update_notification_description))
                    setSmallIcon(android.R.drawable.stat_sys_download)
                    priority = NotificationCompat.PRIORITY_LOW
                }
-                CoroutineScope(Dispatchers.IO).launch io@{
+                val downloadManager = context.getSystemService(Context.DOWNLOAD_SERVICE) as DownloadManager
-                    val target = getDownloadDirectory(context).let {
+
-                        if (it.findFile("Pupil.apk") != null)
+                //Cancel any download queued before
-                            it
+
-                        else
+                val id: Long = Preferences["update_download_id"]
-                            it.createFile("null", "Pupil.apk")!!
+
                if (id != -1L)
                    downloadManager.remove(id)
                val target = File(context.getExternalFilesDir(null), "Pupil.apk").also {
                    it.delete()
                }
-                    try {
+                val request = DownloadManager.Request(Uri.parse(url))
-                        URL(url).download(context, target) { progress, fileSize ->
+                    .setTitle(context.getText(R.string.update_notification_description))
-                            builder.setProgress(fileSize.toInt(), progress.toInt(), false)
+                    .setDestinationUri(Uri.fromFile(target))
                            notificationManager.notify(UPDATE_NOTIFICATION_ID, builder.build())
                        }
                    } catch (e: Exception) {
                        builder.apply {
                            setContentText(context.getString(R.string.update_failed))
                            setMessage(context.getString(R.string.update_failed_message))
                            setSmallIcon(android.R.drawable.stat_sys_download_done)
                        }
-                        notificationManager.cancel(UPDATE_NOTIFICATION_ID)
+                downloadManager.enqueue(request).also {
-                        notificationManager.notify(UPDATE_NOTIFICATION_ID, builder.build())
+                    Preferences["update_download_id"] = it
                        return@io
                    }
                    val install = Intent(Intent.ACTION_VIEW).apply {
                        flags = Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_GRANT_READ_URI_PERMISSION
                        setDataAndType(convertUpdateUri(context, target.uri), MimeTypeMap.getSingleton().getMimeTypeFromExtension("apk"))
                    }
                    builder.apply {
                        setContentIntent(PendingIntent.getActivity(context, 0, install, 0))
                        setProgress(0, 0, false)
                        setSmallIcon(android.R.drawable.stat_sys_download_done)
                        setContentTitle(context.getString(R.string.update_download_completed))
                        setContentText(context.getString(R.string.update_download_completed_description))
                    }
                    notificationManager.cancel(UPDATE_NOTIFICATION_ID)
                    if (context.lifecycle.currentState.isAtLeast(Lifecycle.State.RESUMED))
                        context.startActivity(install)
                    else
                        notificationManager.notify(UPDATE_NOTIFICATION_ID, builder.build())
                }
            }
-            setNegativeButton(if (force) android.R.string.no else R.string.ignore_update) { _, _ ->
+            setNegativeButton(if (force) android.R.string.cancel else R.string.ignore) { _, _ ->
                if (!force)
                    preferences.edit()
-                        .putLong("ignore_update_until", System.currentTimeMillis() + 604800000)
+                        .putLong("ignore_update_until", System.currentTimeMillis() + 86400000)
                        .apply()
            }
        }
@@ -205,3 +174,41 @@ fun checkUpdate(context: AppCompatActivity, force: Boolean = false) {
        }
    }
 }
 fun restore(url: String, onFailure: ((Throwable) -> Unit)? = null, onSuccess: ((Int) -> Unit)? = null) {
    if (!URLUtil.isValidUrl(url)) {
        onFailure?.invoke(IllegalArgumentException())
        return
    }
    val request = Request.Builder()
        .url(url)
        .get()
        .build()
    client.newCall(request).enqueue(object: Callback {
        override fun onFailure(call: Call, e: IOException) {
            onFailure?.invoke(e)
        }
        override fun onResponse(call: Call, response: Response) {
            kotlin.runCatching {
                val data = Json.parseToJsonElement(response.also { if (it.code() != 200) throw IOException() }.body().use { it?.string() } ?: "[]")
                when (data) {
                    is JsonArray -> favorites.addAll(data.map { it.jsonPrimitive.int })
                    is JsonObject -> {
                        val newFavorites = data["favorites"]?.let { Json.decodeFromJsonElement<List<Int>>(it) }.orEmpty()
                        val newFavoriteTags = data["favorite_tags"]?.let { Json.decodeFromJsonElement<List<Tag>>(it) }.orEmpty()
                        favorites.addAll(newFavorites)
                        favoriteTags.addAll(newFavoriteTags)
                        onSuccess?.invoke(favorites.size + favoriteTags.size)
                    }
                    else -> error("data is neither JsonArray or JsonObject")
                }
            }.onFailure { onFailure?.invoke(it) }
        }
    })
 }
--- a/app/src/main/res/anim/shake.xml
+++ b/app/src/main/res/anim/shake.xml
@@ -0,0 +1,24 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!--
  ~     Pupil, Hitomi.la viewer for Android
  ~     Copyright (C) 2020  tom5079
  ~
  ~     This program is free software: you can redistribute it and/or modify
  ~     it under the terms of the GNU General Public License as published by
  ~     the Free Software Foundation, either version 3 of the License, or
  ~     (at your option) any later version.
  ~
  ~     This program is distributed in the hope that it will be useful,
  ~     but WITHOUT ANY WARRANTY; without even the implied warranty of
  ~     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  ~     GNU General Public License for more details.
  ~
  ~     You should have received a copy of the GNU General Public License
  ~     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  -->
 <translate xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="300"
    android:fromXDelta="0"
    android:interpolator="@anim/shake_cycle"
    android:toXDelta="10" />
--- a/app/src/main/res/anim/shake_cycle.xml
+++ b/app/src/main/res/anim/shake_cycle.xml
@@ -0,0 +1,21 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!--
  ~     Pupil, Hitomi.la viewer for Android
  ~     Copyright (C) 2020  tom5079
  ~
  ~     This program is free software: you can redistribute it and/or modify
  ~     it under the terms of the GNU General Public License as published by
  ~     the Free Software Foundation, either version 3 of the License, or
  ~     (at your option) any later version.
  ~
  ~     This program is distributed in the hope that it will be useful,
  ~     but WITHOUT ANY WARRANTY; without even the implied warranty of
  ~     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  ~     GNU General Public License for more details.
  ~
  ~     You should have received a copy of the GNU General Public License
  ~     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  -->
 <cycleInterpolator xmlns:android="http://schemas.android.com/apk/res/android"
    android:cycles="3" />
--- a/app/src/main/res/color/lock_fab.xml
+++ b/app/src/main/res/color/lock_fab.xml
@@ -0,0 +1,23 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!--
  ~     Pupil, Hitomi.la viewer for Android
  ~     Copyright (C) 2020  tom5079
  ~
  ~     This program is free software: you can redistribute it and/or modify
  ~     it under the terms of the GNU General Public License as published by
  ~     the Free Software Foundation, either version 3 of the License, or
  ~     (at your option) any later version.
  ~
  ~     This program is distributed in the hope that it will be useful,
  ~     but WITHOUT ANY WARRANTY; without even the implied warranty of
  ~     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  ~     GNU General Public License for more details.
  ~
  ~     You should have received a copy of the GNU General Public License
  ~     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  -->
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_enabled="false" android:color="@android:color/darker_gray"/>
    <item android:color="@color/colorPrimary"/>
 </selector>
--- a/Show More
+++ b/Show More
		`@@ -1 +0,0 @@`
			`[{"outputType":{"type":"APK"},"apkData":{"type":"MAIN","splits":[],"versionCode":37,"versionName":"5.3-beta4","enabled":true,"outputFile":"app-release.apk","fullName":"release","baseName":"release"},"path":"app-release.apk","properties":{}}]`