thumbnail fix

fix image loading
fix loading
2025-03-23 10:31:12 -07:00 · 2025-03-23 10:13:41 -07:00 · 2025-03-23 09:44:53 -07:00 · 2025-02-26 23:42:41 -08:00 · 2025-02-26 23:39:11 -08:00 · 2025-02-25 00:19:51 -08:00
321 changed files with 12109 additions and 5839 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
-/local.properties
-/.idea/caches
-/.idea/libraries
-/.idea/modules.xml
-/.idea/workspace.xml
-/.idea/navEditor.xml
-/.idea/assetWizardSettings.xml
-.DS_Store
-/build
-/captures
-.externalNativeBuild
+.idea/
+misc.xml
+deploymentTargetDropDown.xml
+render.experimental.xml

-#Github pages
-/gh-pages
+# Keystore files
+*.jks
+*.keystore

-#Private files
-**/google-services.json
+# Google Services (e.g. APIs or Firebase)
+google-services.json
+
+# Android Profiling
+*.hprof
--- a/.idea/codeStyles/Project.xml
+++ b/.idea/codeStyles/Project.xml
@@ -1,125 +0,0 @@
-<component name="ProjectCodeStyleConfiguration">
-  <code_scheme name="Project" version="173">
-    <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$/libpupil" />
-          </set>
-        </option>
-        <option name="resolveModulePerSourceSet" value="false" />
-      </GradleProjectSettings>
-    </option>
-  </component>
-</project>
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="1.8" project-jdk-type="JavaSDK">
-    <output url="file://$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
@@ -1,27 +1,29 @@
-# Pupil
-
 ![Banner](https://github.com/tom5079/Pupil/blob/gh-pages/assets/images/pupil-banner.png?raw=true)
 *Pupil, Hitomi.la viewer for Android*

-# Screenshot
-![Main Screen](https://github.com/tom5079/Pupil/blob/gh-pages/assets/images/main-screenshot.png?raw=true)
-*Main Screen*
+![](https://img.shields.io/github/downloads/tom5079/Pupil/total)  
+[![](https://img.shields.io/github/downloads/tom5079/Pupil/5.3.18/Pupil-v5.3.18.apk?color=%234fc3f7&label=DOWNLOAD%20APP&style=for-the-badge)](https://github.com/tom5079/Pupil/releases/download/5.3.18/Pupil-v5.3.18.apk)  
+[![](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)
-*Reader Screen*
+# Features

-Images are censored to be SFW
+![Main Screen](https://github.com/tom5079/Pupil/blob/gh-pages/assets/images/main-screenshot.jpg?raw=true)

 # Installation

 Go [Releases page](https://github.com/tom5079/Pupil/releases) and get latest version or  
 Visit [github page](https://tom5079.github.io/Pupil/) (only available in Korean)  
-or Build app yourself  
+or Build app yourself

 # Manual

-[Manual](https://tom5079.github.io/Pupil/2019/06/06/manual-kr.html) is only available in Korean. Consider using translator.
+[Manual](https://tom5079.github.io/Pupil/2019/06/06/manual-kr.html) is only available in Korean.
+Consider using translator.

 # 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
@@ -1,87 +0,0 @@
-apply plugin: 'com.android.application'
-apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-kapt'
-apply plugin: 'kotlin-android-extensions'
-apply plugin: 'kotlinx-serialization'
-
-if (file("google-services.json").exists()) {
-    apply plugin: 'com.google.gms.google-services'
-    apply plugin: 'io.fabric'
-    apply plugin: 'com.google.firebase.firebase-perf'
-}
-
-android {
-    compileSdkVersion 29
-    defaultConfig {
-        applicationId "xyz.quaver.pupil"
-        minSdkVersion 16
-        targetSdkVersion 29
-        versionCode 31
-        versionName "4.2"
-        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
-        multiDexEnabled true
-        vectorDrawables.useSupportLibrary = true
-    }
-    buildTypes {
-        release {
-            minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
-        }
-        buildTypes.each {
-            it.buildConfigField('boolean', 'CENSOR', 'false')
-        }
-    }
-    kotlinOptions {
-        freeCompilerArgs += '-Xuse-experimental=kotlin.Experimental'
-    }
-    compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_8
-        targetCompatibility JavaVersion.VERSION_1_8
-    }
-    buildToolsVersion = '29.0.2'
-}
-
-dependencies {
-    def markwonVersion = "3.0.1"
-
-    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:1.2.1'
-    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.2.1'
-    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.constraintlayout:constraintlayout:1.1.3'
-    implementation 'androidx.gridlayout:gridlayout:1.0.0'
-    implementation 'androidx.lifecycle:lifecycle-extensions:2.1.0'
-    implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.1.0'
-    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-alpha03'
-    implementation 'com.google.firebase:firebase-core:17.2.1'
-    implementation 'com.google.firebase:firebase-perf:19.0.4'
-    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:4.9.0'
-    implementation ("com.github.bumptech.glide:recyclerview-integration:4.9.0") {
-        transitive = false
-    }
-    implementation 'com.andrognito.patternlockview:patternlockview:1.0.0'
-    implementation "ru.noties.markwon:core:${markwonVersion}"
-    kapt 'com.github.bumptech.glide:compiler:4.9.0'
-    testImplementation 'junit:junit:4.12'
-    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 {
-    experimental = true
-}
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -0,0 +1,129 @@
+plugins {
+    alias(libs.plugins.android.application)
+    alias(libs.plugins.kotlin.android)
+    alias(libs.plugins.kotlinx.serialization)
+    alias(libs.plugins.kotlin.compose)
+    alias(libs.plugins.gms.oss.licenses)
+    alias(libs.plugins.gms.google.services)
+    alias(libs.plugins.firebase.crashlytics)
+    alias(libs.plugins.firebase.perf)
+    id("kotlin-parcelize")
+}
+
+android {
+    namespace = "xyz.quaver.pupil"
+    compileSdk = 35
+
+    defaultConfig {
+        applicationId = "xyz.quaver.pupil"
+        minSdk = 21
+        targetSdk = 35
+        versionCode = 70
+        versionName = "5.3.21"
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+        vectorDrawables.useSupportLibrary = true
+    }
+    buildFeatures {
+        buildConfig = true
+        compose = true
+    }
+    buildTypes {
+        debug {
+            isMinifyEnabled = false
+            isShrinkResources = false
+
+            isDebuggable = true
+            applicationIdSuffix = ".debug"
+            versionNameSuffix = "-DEBUG"
+
+            extra.apply {
+                set("enableCrashlytics", false)
+                set("alwaysUpdateBuildId", false)
+            }
+        }
+        release {
+            isMinifyEnabled = true
+            isShrinkResources = true
+
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro"
+            )
+        }
+    }
+    buildFeatures {
+        viewBinding = true
+    }
+    kotlinOptions {
+        jvmTarget = JavaVersion.VERSION_11.toString()
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
+    }
+}
+
+dependencies {
+    implementation(libs.kotlin.stdlib.jdk8)
+    implementation(libs.kotlinx.coroutines.android)
+    implementation(libs.kotlinx.serialization.json)
+    implementation(libs.kotlinx.datetime)
+
+    implementation(libs.androidx.compose.runtime)
+
+    implementation(libs.core.ktx)
+    implementation(libs.appcompat)
+    implementation(libs.activity.ktx)
+    implementation(libs.fragment.ktx)
+    implementation(libs.preference.ktx)
+    implementation(libs.recyclerview)
+    implementation(libs.constraintlayout)
+    implementation(libs.gridlayout)
+    implementation(libs.biometric)
+    implementation(libs.work.runtime.ktx)
+
+    implementation(libs.library)
+
+    implementation(libs.material)
+
+    implementation(platform(libs.firebase.bom))
+    implementation(libs.firebase.analytics.ktx)
+    implementation(libs.firebase.crashlytics.ktx)
+    implementation(libs.firebase.perf.ktx)
+
+    implementation(libs.play.services.oss.licenses)
+    implementation(libs.play.services.mlkit.face.detection)
+
+    implementation(libs.fab)
+
+    implementation(libs.bigimageviewer)
+    implementation(libs.frescoimageloader)
+    implementation(libs.frescoimageviewfactory)
+    implementation(libs.imagepipeline.okhttp3)
+
+    //noinspection GradleDependency
+    implementation(libs.okhttp)
+    implementation(libs.ktor.network)
+
+    implementation(libs.dotsindicator)
+
+    implementation(libs.pinlockview)
+    implementation(libs.patternlockview)
+
+    implementation(libs.core)
+
+    implementation(libs.ripplebackground.library)
+    implementation(libs.recyclerview.fastscroller)
+
+    implementation(libs.jsoup)
+
+    implementation(libs.documentfilex)
+    implementation(libs.floatingsearchview)
+
+    testImplementation(libs.junit)
+    testImplementation(libs.kotlinx.coroutines.test)
+    androidTestImplementation(libs.ext.junit)
+    androidTestImplementation(libs.rules)
+    androidTestImplementation(libs.runner)
+    androidTestImplementation(libs.espresso.core)
+}
--- 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
@@ -18,4 +18,20 @@

 # If you keep the line number information, uncomment this to
 # hide the original source file name.
-#-renamesourcefileattribute SourceFile
+#-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/baselineProfiles/0/app-release.dm
+++ b/app/release/baselineProfiles/0/app-release.dm
--- a/app/release/baselineProfiles/1/app-release.dm
+++ b/app/release/baselineProfiles/1/app-release.dm
--- a/app/release/output-metadata.json
+++ b/app/release/output-metadata.json
@@ -0,0 +1,37 @@
+{
+  "version": 3,
+  "artifactType": {
+    "type": "APK",
+    "kind": "Directory"
+  },
+  "applicationId": "xyz.quaver.pupil",
+  "variantName": "release",
+  "elements": [
+    {
+      "type": "SINGLE",
+      "filters": [],
+      "attributes": [],
+      "versionCode": 70,
+      "versionName": "5.3.21",
+      "outputFile": "app-release.apk"
+    }
+  ],
+  "elementType": "File",
+  "baselineProfiles": [
+    {
+      "minApi": 28,
+      "maxApi": 30,
+      "baselineProfiles": [
+        "baselineProfiles/1/app-release.dm"
+      ]
+    },
+    {
+      "minApi": 31,
+      "maxApi": 2147483647,
+      "baselineProfiles": [
+        "baselineProfiles/0/app-release.dm"
+      ]
+    }
+  ],
+  "minSdkVersionForDexing": 21
+}
--- a/app/release/output.json
+++ b/app/release/output.json
@@ -1 +0,0 @@
-[{"outputType":{"type":"APK"},"apkData":{"type":"MAIN","splits":[],"versionCode":31,"versionName":"4.2","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
@@ -21,27 +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.serialization.ImplicitReflectionSerializer
-import kotlinx.serialization.json.Json
-import kotlinx.serialization.json.JsonConfiguration
-import kotlinx.serialization.json.JsonObject
+import kotlinx.coroutines.runBlocking
+import okhttp3.OkHttpClient
+import okhttp3.Request
 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.hiyobi.createImgList
-import xyz.quaver.hiyobi.getReader
-import xyz.quaver.hiyobi.user_agent
-import xyz.quaver.pupil.ui.LockActivity
-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
+import xyz.quaver.pupil.hitomi.*
+import java.util.*
+import java.util.concurrent.TimeUnit

 /**
 * Instrumented test, which will execute on an Android device.
@@ -50,72 +40,144 @@ import javax.net.ssl.HttpsURLConnection
 */
@RunWith(AndroidJUnit4::class)
 class ExampleInstrumentedTest {
+//    @Before
+//    fun init() {
+//        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+//    }

-    @Test
-    fun useAppContext() {
-        // Context of the app under test.
-        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
-        Log.i("PUPILD", getDownloadDirectory(appContext).absolutePath ?: "")
-        assertEquals("xyz.quaver.pupil", appContext.packageName)
+    @Before
+    fun init() {
+        clientBuilder = OkHttpClient.Builder()
+            .readTimeout(0, TimeUnit.SECONDS)
+            .writeTimeout(0, TimeUnit.SECONDS)
+            .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() {
-        val activityTestRule = ActivityTestRule(LockActivity::class.java)
-        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+    fun test_empty() {
+        print(
+            "".trim()
+                .replace(Regex("""^\?"""), "")
+                .lowercase(Locale.getDefault())
+                .split(Regex("\\s+"))
+                .map {
+                    it.replace('_', ' ')
+                })
+    }
+    @Test
+    fun test_nozomi() {
+        val nozomi = getGalleryIDsFromNozomi(null, "index", "all")

-        ContextCompat.getExternalFilesDirs(appContext, null).forEachIndexed { index, file ->
-            Log.i("PUPILD", "$index: ${file?.absolutePath}")
-        }
+        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 data: ByteArray
-
-        with(URL(createImgList(1426382, reader)[0].path).openConnection() as HttpsURLConnection) {
-            setRequestProperty("User-Agent", user_agent)
-            setRequestProperty("Cookie", cookie)
-
-            data = inputStream.readBytes()
+        val r = runBlocking {
+            doSearch("language:korean")
        }

-        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() {
-        val context = InstrumentationRegistry.getInstrumentation().targetContext
+    fun test_getGalleryInfo() {
+        val info = getGalleryInfo(1469394)

-        val json = Json(JsonConfiguration.Stable)
-
-        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())
-            }
-        }
+        print(info)
    }

    @Test
-    fun test_updateOldReader() {
-        val context = InstrumentationRegistry.getInstrumentation().targetContext
+    fun test_getReader() {
+        val reader = getGalleryInfo(2128654)

-        updateOldReaderGalleries(context)
+        Log.d("PUPILD", reader.toString())
    }
+
+    @Test
+    fun test_getImages() { runBlocking {
+        val galleryID = 2128654
+
+        val images = getGalleryInfo(galleryID).files.map {
+            imageUrlFromImage(galleryID, it,false)
+        }
+
+        Log.d("PUPILD", images.toString())
+
+//        images.forEachIndexed { index, image ->
+//            println("Testing $index/${images.size}: $image")
+//            val response = client.newCall(
+//                Request.Builder()
+//                    .url(image)
+//                    .header("Referer", "https://hitomi.la/")
+//                    .build()
+//            ).execute()
+//
+//            assertEquals(200, response.code())
+//
+//            println("$index/${images.size} Passed")
+//        }
+    } }
+
+//    @Test
+//    fun test_urlFromUrlFromHash() {
+//        val url = urlFromUrlFromHash(1531795, GalleryFiles(
+//            212, "719d46a7556be0d0021c5105878507129b5b3308b02cf67f18901b69dbb3b5ef", 1, "00.jpg", 300
+//        ), "webp")
+//
+//        print(url)
+//    }
+
+//    @Test
+//    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)
+//    }
+
+//    @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/debug/res/values/strings.xml
+++ b/app/src/debug/res/values/strings.xml
@@ -0,0 +1,19 @@
+<?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/>.
+  -->
+
+<resources></resources>
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -1,11 +1,26 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    package="xyz.quaver.pupil">
+    xmlns:tools="http://schemas.android.com/tools">

    <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 android:name="android.permission.READ_EXTERNAL_STORAGE" android:maxSdkVersion="23"/>
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" android:maxSdkVersion="23"/>
+    <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"
@@ -16,10 +31,16 @@
        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="${applicationId}.fileprovider"
+            android:authorities="${applicationId}.provider"
            android:name="androidx.core.content.FileProvider"
            android:exported="false"
            android:grantUriPermissions="true">
@@ -30,85 +51,139 @@

        </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">
-            <intent-filter>
+            android:parentActivityName=".ui.MainActivity"
+            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
-                    android:host="hitomi.la"
-                    android:pathPrefix="/galleries"
-                    android:scheme="https" />
+                <data android:scheme="http" />
+                <data android:scheme="https" />
+                <data android:host="*.hasha.in"/>
+                <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
-                    android:host="hiyobi.me"
-                    android:pathPrefix="/reader"
-                    android:scheme="https" />
+                <data android:scheme="http" />
+                <data android:scheme="https" />
+                <data android:host="hitomi.la"/>
+                <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
-                    android:host="e-hentai.org"
-                    android:pathPrefix="/g"
-                    android:scheme="https" />
+                <data android:scheme="http" />
+                <data android:scheme="https" />
+                <data android:host="hitomi.la" />
+                <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
-                    android:host="hitomi.la"
-                    android:pathPrefix="/galleries"
-                    android:scheme="http" />
+                <data android:scheme="http" />
+                <data android:scheme="https" />
+                <data android:host="hitomi.la" />
+                <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
-                    android:host="hiyobi.me"
-                    android:scheme="http"
-                    android:pathPrefix="/reader" />
+                <data android:scheme="http" />
+                <data android:scheme="https" />
+                <data android:host="hitomi.la" />
+                <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
-                    android:host="e-hentai.org"
-                    android:pathPrefix="/g"
-                    android:scheme="http" />
+                <data android:scheme="http" />
+                <data android:scheme="https" />
+                <data android:host="hitomi.la" />
+                <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" />
@@ -116,6 +191,8 @@
                <category android:name="android.intent.category.LAUNCHER" />
            </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
@@ -18,41 +18,176 @@

 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 kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.launch
-import xyz.quaver.pupil.util.Histories
-import xyz.quaver.pupil.util.updateOldReaderGalleries
+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 downloads: Histories
-    lateinit var favorites: Histories
+lateinit var histories: SavedSet<Int>
+    private set
+lateinit var favorites: SavedSet<Int>
+    private set
+lateinit var favoriteTags: SavedSet<Tag>
+    private set
+lateinit var searchHistory: SavedSet<String>
+    private set

-    init {
-        AppCompatDelegate.setCompatVectorFromResourcesEnabled(true)
+val interceptors = mutableMapOf<KClass<out Any>, PupilInterceptor>()
+
+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"))
-        downloads = Histories(File(ContextCompat.getDataDir(this), "downloads.json"))
-        favorites = Histories(File(ContextCompat.getDataDir(this), "favorites.json"))
+        AppCompatDelegate.setCompatVectorFromResourcesEnabled(true)
+
+        preferences = PreferenceManager.getDefaultSharedPreferences(this)
+
+        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) {
+            Preferences.remove("download_folder")
+        }
+
+        if (!Preferences["reset_secure", false]) {
+            Preferences["security_mode"] = false
+            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)
@@ -62,26 +197,59 @@ 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_LOW).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.setDefaultNightMode(when (preference.getBoolean("dark_mode", false)) {
+        AppCompatDelegate.setDefaultNightMode(when (Preferences.get<Boolean>("dark_mode")) {
            true -> AppCompatDelegate.MODE_NIGHT_YES
            false -> AppCompatDelegate.MODE_NIGHT_NO
        })

-        CoroutineScope(Dispatchers.IO).launch {
-            updateOldReaderGalleries(this@Pupil)
-        }
-
        super.onCreate()
    }

--- a/app/src/main/java/xyz/quaver/pupil/adapters/GalleryBlockAdapter.kt
+++ b/app/src/main/java/xyz/quaver/pupil/adapters/GalleryBlockAdapter.kt
@@ -18,327 +18,294 @@

 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.SparseBooleanArray
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import android.widget.LinearLayout
-import androidx.cardview.widget.CardView
+import android.widget.Toast
 import androidx.core.content.ContextCompat
 import androidx.recyclerview.widget.RecyclerView
 import androidx.vectordrawable.graphics.drawable.Animatable2Compat
 import androidx.vectordrawable.graphics.drawable.AnimatedVectorDrawableCompat
-import com.bumptech.glide.RequestManager
-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 kotlinx.android.synthetic.main.item_galleryblock.view.*
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Deferred
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.launch
-import kotlinx.serialization.json.Json
-import kotlinx.serialization.json.JsonConfiguration
-import xyz.quaver.hitomi.GalleryBlock
-import xyz.quaver.hitomi.Reader
-import xyz.quaver.pupil.BuildConfig
-import xyz.quaver.pupil.Pupil
+import com.github.piasy.biv.loader.ImageLoader
+import kotlinx.coroutines.*
+import xyz.quaver.io.util.getChild
 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.GalleryDownloader
-import xyz.quaver.pupil.util.Histories
-import xyz.quaver.pupil.util.getCachedGallery
+import xyz.quaver.pupil.ui.view.ProgressCard
+import xyz.quaver.pupil.util.Preferences
+import xyz.quaver.pupil.util.downloader.Cache
+import xyz.quaver.pupil.util.downloader.DownloadManager
 import xyz.quaver.pupil.util.wordCapitalize
 import java.io.File
-import java.util.*
-import kotlin.collections.ArrayList
-import kotlin.collections.HashMap
-import kotlin.concurrent.schedule

-class GalleryBlockAdapter(private val glide: RequestManager, private val galleries: List<Pair<GalleryBlock, Deferred<String>>>) : RecyclerSwipeAdapter<RecyclerView.ViewHolder>(), SwipeAdapterInterface {
+class GalleryBlockAdapter(private val galleries: List<Int>) : RecyclerSwipeAdapter<RecyclerView.ViewHolder>(), SwipeAdapterInterface {

-    enum class ViewType {
-        NEXT,
-        GALLERY,
-        PREV
-    }
+    var updateAll = true
+    var thin: Boolean = Preferences["thin"]

-    private lateinit var favorites: Histories
+    inner class GalleryViewHolder(val binding: GalleryblockItemBinding) : RecyclerView.ViewHolder(binding.root) {
+        private var galleryID: Int = 0

-    inner class GalleryViewHolder(val view: View) : RecyclerView.ViewHolder(view) {
-        fun bind(item: Pair<GalleryBlock, Deferred<String>>) {
-            with(view) {
-                val resources = context.resources
-                val languages = resources.getStringArray(R.array.languages).map {
-                    it.split("|").let { split ->
-                        Pair(split[0], split[1])
-                    }
-                }.toMap()
+        init {
+            CoroutineScope(Dispatchers.Main).launch {
+                while (updateAll) {
+                    updateProgress(itemView.context)
+                    delay(1000)
+                }
+            }
+        }

-                val (galleryBlock: GalleryBlock, thumbnail: Deferred<String>) = item
+        private fun updateProgress(context: Context) = CoroutineScope(Dispatchers.Main).launch {
+            with(binding.galleryblockCard) {
+                val imageList = Cache.getInstance(context, galleryID).metadata.imageList

-                val artists = galleryBlock.artists
-                val series = galleryBlock.series
+                if (imageList == null) {
+                    max = 0
+                    return@with
+                }

-                CoroutineScope(Dispatchers.Main).launch {
-                    val cache = thumbnail.await()
+                progress = imageList.count { it != null }
+                max = imageList.size

-                    glide
-                        .load(cache)
-                        .skipMemoryCache(true)
-                        .diskCacheStrategy(DiskCacheStrategy.NONE)
-                        .error(R.drawable.image_broken_variant)
-                        .apply {
-                            if (BuildConfig.CENSOR)
-                                override(5, 8)
+                this@GalleryViewHolder.binding.galleryblockId.setOnClickListener {
+                    (context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager).setPrimaryClip(
+                        ClipData.newPlainText("gallery_id", galleryID.toString())
+                    )
+                    Toast.makeText(context, R.string.copied_to_clipboard, Toast.LENGTH_SHORT).show()
+                }
+
+                type = if (!imageList.contains(null)) {
+                    val downloadManager = DownloadManager.getInstance(context)
+
+                    if (downloadManager.getDownloadFolder(galleryID) == null)
+                        ProgressCard.Type.CACHE
+                    else
+                        ProgressCard.Type.DOWNLOAD
+                } else
+                    ProgressCard.Type.LOADING
+            }
+        }
+
+        fun bind(galleryID: Int) {
+            this.galleryID = galleryID
+            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])
                        }
-                        .into(galleryblock_thumbnail)
-                }
+                    }.toMap()

-                //Check cache
-                val readerCache = { File(getCachedGallery(context, galleryBlock.id), "reader.json") }
-                val imageCache = { File(getCachedGallery(context, galleryBlock.id), "images") }
+                    val artists = galleryBlock.artists
+                    val series = galleryBlock.series

-                try {
-                   Json(JsonConfiguration.Stable)
-                        .parse(Reader.serializer(), readerCache.invoke().readText())
-                } catch(e: Exception) {
-                    readerCache.invoke().delete()
-                }
+                    binding.galleryblockThumbnail.apply {
+                        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)
+                            }

-                if (readerCache.invoke().exists()) {
-                    val reader = Json(JsonConfiguration.Stable)
-                        .parse(Reader.serializer(), readerCache.invoke().readText())
-
-                    with(galleryblock_progressbar) {
-                        max = reader.galleryInfo.size
-                        progress = imageCache.invoke().list()?.size ?: 0
-
-                        visibility = View.VISIBLE
+                            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.IO).launch {
+                            cache.getThumbnail().let { launch(Dispatchers.Main) {
+                                showImage(it)
+                            } }
+                        }
                    }
-                } else {
-                    galleryblock_progressbar.visibility = View.GONE
-                }

-                if (refreshTasks[this@GalleryViewHolder] == null) {
-                    val refresh = Timer(false).schedule(0, 1000) {
-                        post {
-                            with(view.galleryblock_progressbar) {
-                                progress = imageCache.invoke().list()?.size ?: 0
+                    binding.galleryblockTitle.text = galleryBlock.title
+                    with(binding.galleryblockArtist) {
+                        text = artists.joinToString { it.wordCapitalize() }
+                        visibility = when {
+                            artists.isNotEmpty() -> View.VISIBLE
+                            else -> View.GONE
+                        }

-                                if (!readerCache.invoke().exists()) {
-                                    visibility = View.GONE
-                                    max = 0
-                                    progress = 0
+                        CoroutineScope(Dispatchers.IO).launch {
+                            val gallery = runCatching {
+                                getGallery(galleryID)
+                            }.getOrNull()

-                                    view.galleryblock_progress_complete.visibility = View.INVISIBLE
-                                } else {
-                                    if (visibility == View.GONE) {
-                                        val reader = Json(JsonConfiguration.Stable)
-                                            .parse(Reader.serializer(), readerCache.invoke().readText())
-                                        max = reader.galleryInfo.size
-                                        visibility = View.VISIBLE
-                                    }
+                            if (gallery?.groups?.isNotEmpty() != true)
+                                return@launch

-                                    if (progress == max) {
-                                        if (completeFlag.get(galleryBlock.id, false)) {
-                                            with(view.galleryblock_progress_complete) {
-                                                setImageResource(R.drawable.ic_progressbar)
-                                                visibility = View.VISIBLE
-                                            }
-                                        } else {
-                                            with(view.galleryblock_progress_complete) {
-                                                setImageDrawable(AnimatedVectorDrawableCompat.create(context, R.drawable.ic_progressbar_complete).apply {
-                                                    this?.start()
-                                                })
-                                                visibility = View.VISIBLE
-                                            }
-                                            completeFlag.put(galleryBlock.id, true)
+                            launch(Dispatchers.Main) {
+                                text = context.getString(
+                                    R.string.galleryblock_artist_with_group,
+                                    artists.joinToString { it.wordCapitalize() },
+                                    gallery.groups.joinToString { it.wordCapitalize() }
+                                )
+                            }
+                        }
+                    }
+                    with(binding.galleryblockSeries) {
+                        text =
+                            resources.getString(
+                                R.string.galleryblock_series,
+                                series.joinToString(", ") { it.wordCapitalize() })
+                        visibility = when {
+                            series.isNotEmpty() -> View.VISIBLE
+                            else -> View.GONE
+                        }
+                    }
+                    binding.galleryblockType.text = resources.getString(R.string.galleryblock_type, galleryBlock.type).wordCapitalize()
+                    with(binding.galleryblockLanguage) {
+                        text =
+                            resources.getString(R.string.galleryblock_language, languages[galleryBlock.language])
+                        visibility = when {
+                            !galleryBlock.language.isNullOrEmpty() -> View.VISIBLE
+                            else -> View.GONE
+                        }
+                    }
+
+                    with(binding.galleryblockTagGroup) {
+                        onClickListener = {
+                            onChipClickedHandler.forEach { callback ->
+                                callback.invoke(it)
+                            }
+                        }
+
+                        tags.clear()
+
+                        CoroutineScope(Dispatchers.IO).launch {
+                            tags.addAll(
+                                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
                                        }
-                                    } else
-                                        view.galleryblock_progress_complete.visibility = View.INVISIBLE
+                                }.map {
+                                    Tag.parse(it)
+                                }
+                            )
+
+                            launch(Dispatchers.Main) {
+                                refresh()
+                            }
+                        }
+                    }
+
+                    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)
+                        }
+                    }
+
+                    with(binding.galleryblockFavorite) {
+                        setImageResource(if (favorites.contains(galleryBlock.id)) R.drawable.ic_star_filled else R.drawable.ic_star_empty)
+                        setOnClickListener {
+                            when {
+                                favorites.contains(galleryBlock.id) -> {
+                                    favorites.remove(galleryBlock.id)
+
+                                    setImageResource(R.drawable.ic_star_empty)
+                                }
+                                else -> {
+                                    favorites.add(galleryBlock.id)
+
+                                    setImageDrawable(AnimatedVectorDrawableCompat.create(context, R.drawable.avd_star).apply {
+                                        this ?: return@apply
+
+                                        registerAnimationCallback(object: Animatable2Compat.AnimationCallback() {
+                                            override fun onAnimationEnd(drawable: Drawable?) {
+                                                setImageResource(R.drawable.ic_star_filled)
+                                            }
+                                        })
+                                        start()
+                                    })
                                }
                            }
                        }
                    }

-                    refreshTasks[this@GalleryViewHolder] = refresh
+
                }
+            }

-                galleryblock_title.text = galleryBlock.title
-                with(galleryblock_artist) {
-                    text = artists.joinToString(", ") { it.wordCapitalize() }
-                    visibility = when {
-                        artists.isNotEmpty() -> View.VISIBLE
-                        else -> View.GONE
-                    }
-                }
-                with(galleryblock_series) {
-                    text =
-                        resources.getString(
-                            R.string.galleryblock_series,
-                            series.joinToString(", ") { it.wordCapitalize() })
-                    visibility = when {
-                        series.isNotEmpty() -> View.VISIBLE
-                        else -> View.GONE
-                    }
-                }
-                galleryblock_type.text = resources.getString(R.string.galleryblock_type, galleryBlock.type).wordCapitalize()
-                with(galleryblock_language) {
-                    text =
-                        resources.getString(R.string.galleryblock_language, languages[galleryBlock.language])
-                    visibility = when {
-                        galleryBlock.language.isNotEmpty() -> View.VISIBLE
-                        else -> View.GONE
-                    }
-                }
-
-                galleryblock_tag_group.removeAllViews()
-                galleryBlock.relatedTags.forEach {
-                    galleryblock_tag_group.addView(Chip(context).apply {
-                        val tag = Tag.parse(it).let {  tag ->
-                            when {
-                                tag.area != null -> tag
-                                else -> Tag("tag", it)
-                            }
-                        }
-
-                        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 = tag.tag.wordCapitalize()
-                        setOnClickListener {
-                            for (callback in onChipClickedHandler)
-                                callback.invoke(tag)
-                        }
-                    })
-                }
-
-                galleryblock_id.text = galleryBlock.id.toString()
-
-                if (!::favorites.isInitialized)
-                    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 {
-                            favorites.contains(galleryBlock.id) -> {
-                                favorites.remove(galleryBlock.id)
-
-                                setImageResource(R.drawable.ic_star_empty)
-                            }
-                            else -> {
-                                favorites.add(galleryBlock.id)
-
-                                setImageDrawable(AnimatedVectorDrawableCompat.create(context, R.drawable.avd_star).apply {
-                                    this ?: return@apply
-
-                                    registerAnimationCallback(object: Animatable2Compat.AnimationCallback() {
-                                        override fun onAnimationEnd(drawable: Drawable?) {
-                                            setImageResource(R.drawable.ic_star_filled)
-                                        }
-                                    })
-                                    start()
-                                })
-                            }
-                        }
-                    }
-                }
+            // Make some views invisible to make it thinner
+            if (thin) {
+                binding.galleryblockTagGroup.visibility = View.GONE
            }
        }
    }
-    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
-                }
-            }
-        }
-    }
-
-    private val refreshTasks = HashMap<GalleryViewHolder, TimerTask>()
-    val completeFlag = SparseBooleanArray()

    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 {
-
-        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
-            )
-        )
+        return GalleryViewHolder(GalleryblockItemBinding.inflate(LayoutInflater.from(parent.context), 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) {
-                setOnClickListener {
-                    holder.view.performClick()
-                }
-                setOnLongClickListener {
-                    holder.view.performLongClick()
-                }
-            }
-
-            holder.view.galleryblock_download.setOnClickListener {
+            holder.binding.galleryblockCard.binding.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 = when(GalleryDownloader.get(gallery.first.id)) {
-                        null -> holder.view.context.getString(R.string.main_download)
-                        else -> holder.view.context.getString(android.R.string.cancel)
-                    }
+                    holder.binding.galleryblockCard.binding.download.text =
+                        if (DownloadManager.getInstance(holder.binding.root.context).isDownloading(galleryID))
+                            holder.binding.root.context.getString(android.R.string.cancel)
+                        else
+                            holder.binding.root.context.getString(R.string.main_download)
                }

                override fun onClose(layout: SwipeLayout?) {}
@@ -350,29 +317,7 @@ class GalleryBlockAdapter(private val glide: RequestManager, private val galleri
        }
    }

-    override fun onViewDetachedFromWindow(holder: RecyclerView.ViewHolder) {
-        super.onViewDetachedFromWindow(holder)
+    override fun getItemCount() = galleries.size

-        if (holder is GalleryViewHolder) {
-            val task = refreshTasks[holder] ?: return
-
-            task.cancel()
-            refreshTasks.remove(holder)
-        }
-    }
-
-    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
+    override fun getSwipeLayoutResourceId(position: Int) = R.id.swipe_layout
 }
--- a/app/src/main/java/xyz/quaver/pupil/adapters/ReaderAdapter.kt
+++ b/app/src/main/java/xyz/quaver/pupil/adapters/ReaderAdapter.kt
@@ -18,55 +18,233 @@

 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.RequestManager
-import com.bumptech.glide.load.engine.DiskCacheStrategy
-import xyz.quaver.pupil.BuildConfig
+import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
+import com.facebook.drawee.backends.pipeline.Fresco
+import com.facebook.drawee.controller.BaseControllerListener
+import com.facebook.drawee.drawable.ScalingUtils
+import com.facebook.drawee.interfaces.DraweeController
+import com.facebook.drawee.view.SimpleDraweeView
+import com.facebook.imagepipeline.image.ImageInfo
+import com.github.piasy.biv.view.BigImageView
+import com.github.piasy.biv.view.ImageShownCallback
+import com.github.piasy.biv.view.ImageViewFactory
+import kotlinx.coroutines.*
 import xyz.quaver.pupil.R
-import xyz.quaver.pupil.util.getCachedGallery
+import xyz.quaver.pupil.databinding.ReaderItemBinding
+import xyz.quaver.pupil.hitomi.GalleryInfo
+import xyz.quaver.pupil.ui.ReaderActivity
+import xyz.quaver.pupil.util.downloader.Cache
 import java.io.File
+import kotlin.math.roundToInt

-class ReaderAdapter(private val glide: RequestManager,
-                    private val galleryID: Int,
-                    private val images: List<String>) : RecyclerView.Adapter<ReaderAdapter.ViewHolder>() {
+class ReaderAdapter(
+    private val activity: ReaderActivity,
+    private val galleryID: Int
+) : RecyclerView.Adapter<ReaderAdapter.ViewHolder>() {
+    var galleryInfo: GalleryInfo? = null

    var isFullScreen = false

-    class ViewHolder(val view: View) : RecyclerView.ViewHolder(view)
+    var onItemClickListener : (() -> (Unit))? = null

-    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
-        return LayoutInflater.from(parent.context).inflate(
-            R.layout.item_reader, parent, false
-        ).let {
-            ViewHolder(it)
+    inner class ViewHolder(private val binding: ReaderItemBinding) : RecyclerView.ViewHolder(binding.root) {
+        init {
+            with (binding.image) {
+                setImageViewFactory(FrescoImageViewFactory().apply {
+                    updateView = { imageInfo ->
+                        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
+                            }
+                        }
+                    }
+
+                    override fun onThumbnailShown() {}
+                })
+
+                setFailureImage(ContextCompat.getDrawable(itemView.context, R.drawable.image_broken_variant))
+                setOnClickListener {
+                    onItemClickListener?.invoke()
+                }
+            }
+
+            binding.root.setOnClickListener {
+                onItemClickListener?.invoke()
+            }
+        }
+
+        fun bind(position: Int) {
+            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}"
+                }
+            } else {
+                binding.root.layoutParams.height = ViewGroup.LayoutParams.MATCH_PARENT
+                binding.image.updateLayoutParams<ConstraintLayout.LayoutParams> {
+                    height = ConstraintLayout.LayoutParams.MATCH_PARENT
+                    dimensionRatio = null
+                }
+                binding.root.background = null
+            }
+
+            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
+
+                clear()
+
+                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 onBindViewHolder(holder: ViewHolder, position: Int) {
-        holder.view as ImageView
-
-        if (isFullScreen)
-            holder.view.layoutParams.height = RecyclerView.LayoutParams.MATCH_PARENT
-        else
-            holder.view.layoutParams.height = RecyclerView.LayoutParams.WRAP_CONTENT
-
-        glide
-            .load(File(getCachedGallery(holder.view.context, galleryID), images[position]))
-            .diskCacheStrategy(DiskCacheStrategy.NONE)
-            .skipMemoryCache(true)
-            .error(R.drawable.image_broken_variant)
-            .dontTransform()
-            .apply {
-                if (BuildConfig.CENSOR)
-                    override(5, 8)
-            }
-            .into(holder.view)
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        return ViewHolder(ReaderItemBinding.inflate(LayoutInflater.from(parent.context), parent, false))
    }

-    override fun getItemCount() = images.size
+    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 xyz.quaver.pupil.BuildConfig
+import com.github.piasy.biv.view.BigImageView
+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
-            .load(thumbnails[position])
-            .apply {
-                if (BuildConfig.CENSOR)
-                    override(5, 8)
-            }
-            .into(holder.view)
+        holder.view.showImage(Uri.parse(thumbnails[position]))
    }

    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 +1,308 @@
+/*
+ *    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.Dispatchers
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.suspendCancellableCoroutine
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import kotlinx.coroutines.withContext
+import kotlinx.serialization.Serializable
+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 kotlin.coroutines.resumeWithException
+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.gold-usergeneratedcontent.net"
+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.gold-usergeneratedcontent.net/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("(..)(.)$").find(h)
+        return m!!.groupValues.let { it[2] + it[1] }.toInt(16).toString(10)
+    }
+}
+
+suspend fun subdomainFromURL(url: String, base: String? = null, dir: String? = null): String {
+    var retval = ""
+
+    if (!base.isNullOrBlank()) {
+        when {
+            dir == "webp" -> retval = "w"
+            dir == "avif" -> retval = "a"
+        }
+    }
+
+    val b = 16
+
+    val r = Regex("""/[0-9a-f]{61}([0-9a-f]{2})([0-9a-f])""")
+    val m = r.find(url) ?: return ""
+
+    val g = m.groupValues.let { it[2] + it[1] }.toIntOrNull(b)
+
+    if (g != null) {
+        retval = if (base.isNullOrEmpty()) {
+            retval + (1 + gg.m(g)).toString()
+        } else {
+            (97 + gg.m(g)).toChar().toString() + base
+        }
+    }
+
+    return retval
+}
+
+suspend fun urlFromUrl(url: String, base: String? = null, dir: String? = null): String {
+    return url.replace(
+        Regex("""//..?\.(?:gold-usergeneratedcontent\.net|hitomi\.la)/"""),
+        "//${subdomainFromURL(url, base, dir)}.gold-usergeneratedcontent.net/"
+    )
+}
+
+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 != '.' }
+    return buildString {
+        append("https://a.gold-usergeneratedcontent.net/")
+        if (dir != "webp" && dir != "avif") {
+            append(dir)
+            append("/")
+        }
+        append(fullPathFromHash(image.hash))
+        append(".")
+        append(ext)
+    }
+}
+
+suspend fun urlFromUrlFromHash(
+    galleryID: Int,
+    image: GalleryFiles,
+    dir: String? = null,
+    ext: String? = null,
+    base: String? = null,
+) =
+    if (base == "tn")
+        urlFromUrl(
+            "https://a.gold-usergeneratedcontent.net/$dir/${realFullPathFromHash(image.hash)}.$ext",
+            base,
+        )
+    else
+        urlFromUrl(urlFromHash(galleryID, image, dir, ext), base, dir)
+
+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
@@ -14,37 +14,25 @@
 *    limitations under the License.
 */

-package xyz.quaver.hitomi
+package xyz.quaver.pupil.hitomi

 import kotlinx.serialization.Serializable
-import org.jsoup.Jsoup
-
-fun getReferer(galleryID: Int) = "https://hitomi.la/reader/$galleryID.html"
-fun webpUrlFromUrl(url: String) = url.replace("/galleries/", "/webp/") + ".webp"
+import xyz.quaver.pupil.hitomi.GalleryInfo
+import xyz.quaver.pupil.hitomi.getGalleryInfo

@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>) {
-    enum class Code {
-        HITOMI,
-        HIYOBI,
-        SORALA
-    }
-}
-
 //Set header `Referer` to reader url to avoid 403 error
-fun getReader(galleryID: Int) : Reader {
-    val readerUrl = "https://hitomi.la/reader/$galleryID.html"
-
-    val doc = Jsoup.connect(readerUrl).get()
-
-   return Reader(Reader.Code.HITOMI, doc.title(), getGalleryInfo(galleryID))
+@Deprecated("", replaceWith = ReplaceWith("getGalleryInfo"))
+fun getReader(galleryID: Int) : GalleryInfo {
+   return getGalleryInfo(galleryID)
 }
--- a/app/src/main/java/xyz/quaver/pupil/hitomi/results.kt
+++ b/app/src/main/java/xyz/quaver/pupil/hitomi/results.kt
@@ -0,0 +1,94 @@
+/*
+ *    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.async
+import kotlinx.coroutines.coroutineScope
+import java.util.LinkedList
+
+suspend fun doSearch(query: String, sortMode: SortMode): List<Int> = coroutineScope {
+    val terms = query
+        .trim()
+        .replace(Regex("""^\?"""), "")
+        .lowercase()
+        .split(Regex("\\s+"))
+        .map {
+            it.replace('_', ' ')
+        }
+
+    val positiveTerms = LinkedList<String>()
+    val negativeTerms = LinkedList<String>()
+
+    for (term in terms) {
+        if (term.startsWith("-"))
+            negativeTerms.push(term.substring(1))
+        else if (term.isNotBlank())
+            positiveTerms.push(term)
+    }
+
+    val positiveResults = positiveTerms.map {
+        async {
+            runCatching {
+                getGalleryIDsForQuery(it, sortMode)
+            }.getOrElse { emptySet() }
+        }
+    }
+
+    val negativeResults = negativeTerms.map {
+        async {
+            runCatching {
+                getGalleryIDsForQuery(it, sortMode)
+            }.getOrElse { emptySet() }
+        }
+    }
+
+    val results = when {
+        positiveTerms.isEmpty() -> getGalleryIDsFromNozomi(
+            SearchArgs("all", "index", "all"),
+            sortMode
+        )
+
+        else -> emptySet()
+    }.toMutableSet()
+
+    fun filterPositive(newResults: Set<Int>) {
+        when {
+            results.isEmpty() -> results.addAll(newResults)
+            else -> results.retainAll(newResults)
+        }
+    }
+
+    fun filterNegative(newResults: Set<Int>) {
+        results.removeAll(newResults)
+    }
+
+    //positive results
+    positiveResults.forEach {
+        filterPositive(it.await())
+    }
+
+    //negative results
+    negativeResults.forEach {
+        filterNegative(it.await())
+    }
+
+    return@coroutineScope if (sortMode != SortMode.RANDOM) {
+        results.toList()
+    } else {
+        results.shuffled()
+    }
+}
--- a/app/src/main/java/xyz/quaver/pupil/hitomi/search.kt
+++ b/app/src/main/java/xyz/quaver/pupil/hitomi/search.kt
@@ -0,0 +1,409 @@
+/*
+ *    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.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 kotlin.math.min
+
+data class SearchArgs(
+    val area: String?,
+    val tag: String,
+    val language: String,
+) {
+    companion object {
+        fun fromQuery(query: String): SearchArgs? {
+            if (!query.contains(':')) {
+                return null
+            }
+
+            val (left, right) = query.split(':')
+
+            return when (left) {
+                "male", "female" -> SearchArgs("tag", query, "all")
+                "language" -> SearchArgs("all", "index", right)
+                else -> SearchArgs(left, right, "all")
+            }
+        }
+    }
+}
+
+enum class SortMode {
+    DATE_ADDED,
+    DATE_PUBLISHED,
+    POPULAR_TODAY,
+    POPULAR_WEEK,
+    POPULAR_MONTH,
+    POPULAR_YEAR,
+    RANDOM;
+
+    val orderBy: String
+        get() = when (this) {
+            DATE_ADDED, DATE_PUBLISHED, RANDOM -> "date"
+            POPULAR_TODAY, POPULAR_WEEK, POPULAR_MONTH, POPULAR_YEAR -> "popular"
+        }
+
+    val orderByKey: String
+        get() = when (this) {
+            DATE_ADDED, RANDOM -> "added"
+            DATE_PUBLISHED -> "published"
+            POPULAR_TODAY -> "today"
+            POPULAR_WEEK -> "week"
+            POPULAR_MONTH -> "month"
+            POPULAR_YEAR -> "year"
+        }
+}
+
+//searchlib.js
+const val separator = "-"
+const val extension = ".html"
+const val index_dir = "tagindex"
+const val galleries_index_dir = "galleriesindex"
+const val max_node_size = 464
+const val B = 16
+const val compressed_nozomi_prefix = "n"
+
+val tag_index_version: String by lazy { getIndexVersion("tagindex") }
+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)
+}
+
+@OptIn(ExperimentalUnsignedTypes::class)
+fun hashTerm(term: String): UByteArray {
+    return sha256(term.toByteArray()).toUByteArray().sliceArray(0 until 4)
+}
+
+fun sanitize(input: String): String {
+    return input.replace(Regex("[/#]"), "")
+}
+
+fun getIndexVersion(name: String) =
+    URL("$protocol//$domain/$name/version?_=${System.currentTimeMillis()}").readText()
+
+//search.js
+fun getGalleryIDsForQuery(query: String, sortMode: SortMode): Set<Int> {
+    val sanitizedQuery = query.replace("_", " ")
+
+    val args = SearchArgs.fromQuery(sanitizedQuery)
+
+    return if (args != null) {
+        getGalleryIDsFromNozomi(args, sortMode)
+    } else {
+        val key = hashTerm(sanitizedQuery)
+        val field = "galleries"
+
+        val node = getNodeAtAddress(field, 0)
+
+        val data = bSearch(field, key, node)
+
+        if (data != null)
+            return getGalleryIDsFromData(data)
+
+        return emptySet()
+    }
+}
+
+fun encodeSearchQueryForUrl(s: Char) =
+    when (s) {
+        ' ' -> "_"
+        '/' -> "slash"
+        '.' -> "dot"
+        else -> s.toString()
+    }
+
+fun getSuggestionsForQuery(query: String): List<Suggestion> {
+    query.replace('_', ' ').let {
+        var field = "global"
+        var term = it
+
+        if (term.indexOf(':') > -1) {
+            val sides = it.split(':')
+            field = sides[0]
+            term = sides[1]
+        }
+
+        val chars = term.map(::encodeSearchQueryForUrl)
+        val url =
+            "https://$tagIndexDomain/$field${if (chars.isNotEmpty()) "/${chars.joinToString("/")}" else ""}.json"
+
+        val request = Request.Builder()
+            .url(url)
+            .build()
+
+        val suggestions = json.parseToJsonElement(
+            client.newCall(request).execute().body()?.use { body -> body.string() }
+                ?: return emptyList())
+
+        return buildList {
+            suggestions.jsonArray.forEach { suggestionRaw ->
+                val suggestion = suggestionRaw.jsonArray
+                if (suggestion.size < 3) {
+                    return@forEach
+                }
+                val ns = suggestion[2].content ?: ""
+
+                val tagname = sanitize(suggestion[0].content ?: return@forEach)
+                val url = when (ns) {
+                    "female", "male" -> "/tag/$ns:$tagname${separator}1$extension"
+                    "language" -> "/index-$tagname${separator}1$extension"
+                    else -> "/$ns/$tagname${separator}all${separator}1$extension"
+                }
+
+                add(
+                    Suggestion(
+                        suggestion[0].content ?: "",
+                        suggestion[1].content?.toIntOrNull() ?: 0,
+                        url,
+                        ns
+                    )
+                )
+            }
+        }
+    }
+}
+
+data class Suggestion(val s: String, val t: Int, val u: String, val n: String)
+
+fun getSuggestionsFromData(field: String, data: Pair<Long, Int>): List<Suggestion> {
+    val url = "$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))
+
+    val suggestions = ArrayList<Suggestion>()
+
+    val buffer = ByteBuffer
+        .wrap(inbuf)
+        .order(ByteOrder.BIG_ENDIAN)
+    val numberOfSuggestions = buffer.int
+
+    if (numberOfSuggestions > 100 || numberOfSuggestions <= 0)
+        throw Exception("number of suggestions $numberOfSuggestions is too long")
+
+    for (i in 0.until(numberOfSuggestions)) {
+        var top = buffer.int
+
+        val ns = inbuf.sliceArray(buffer.position().until(buffer.position() + top))
+            .toString(charset("UTF-8"))
+        buffer.position(buffer.position() + top)
+
+        top = buffer.int
+
+        val tag = inbuf.sliceArray(buffer.position().until(buffer.position() + top))
+            .toString(charset("UTF-8"))
+        buffer.position(buffer.position() + top)
+
+        val count = buffer.int
+
+        val tagname = sanitize(tag)
+        val u =
+            when (ns) {
+                "female", "male" -> "/tag/$ns:$tagname${separator}1$extension"
+                "language" -> "/index-$tagname${separator}1$extension"
+                else -> "/$ns/$tagname${separator}all${separator}1$extension"
+            }
+
+        suggestions.add(Suggestion(tag, count, u, ns))
+    }
+
+    return suggestions
+}
+
+fun nozomiAddressFromArgs(args: SearchArgs, sortMode: SortMode) = when {
+    sortMode != SortMode.DATE_ADDED && sortMode != SortMode.RANDOM ->
+        if (args.area == "all") "$protocol//$domain/$compressed_nozomi_prefix/${sortMode.orderBy}/${sortMode.orderByKey}-${args.language}$nozomiextension"
+        else "$protocol//$domain/$compressed_nozomi_prefix/${args.area}/${sortMode.orderBy}/${sortMode.orderByKey}/${args.tag}-${args.language}$nozomiextension"
+
+    args.area == "all" -> "$protocol//$domain/$compressed_nozomi_prefix/${args.tag}-${args.language}$nozomiextension"
+    else -> "$protocol//$domain/$compressed_nozomi_prefix/${args.area}/${args.tag}-${args.language}$nozomiextension"
+}
+
+fun getGalleryIDsFromNozomi(args: SearchArgs, sortMode: SortMode): Set<Int> {
+    val nozomiAddress = nozomiAddressFromArgs(args, sortMode)
+
+    val bytes = URL(nozomiAddress).readBytes()
+
+    val nozomi = mutableSetOf<Int>()
+
+    val arrayBuffer = ByteBuffer
+        .wrap(bytes)
+        .order(ByteOrder.BIG_ENDIAN)
+
+    while (arrayBuffer.hasRemaining())
+        nozomi.add(arrayBuffer.int)
+
+    return nozomi
+}
+
+fun getGalleryIDsFromData(data: Pair<Long, Int>): Set<Int> {
+    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))
+
+    val galleryIDs = mutableSetOf<Int>()
+
+    val buffer = ByteBuffer
+        .wrap(inbuf)
+        .order(ByteOrder.BIG_ENDIAN)
+
+    val numberOfGalleryIDs = buffer.int
+
+    val expectedLength = numberOfGalleryIDs * 4 + 4
+
+    if (numberOfGalleryIDs > 10000000 || numberOfGalleryIDs <= 0)
+        throw Exception("number_of_galleryids $numberOfGalleryIDs is too long")
+    else if (inbuf.size != expectedLength)
+        throw Exception("inbuf.byteLength ${inbuf.size} != expected_length $expectedLength")
+
+    for (i in 0.until(numberOfGalleryIDs))
+        galleryIDs.add(buffer.int)
+
+    return galleryIDs
+}
+
+fun getNodeAtAddress(field: String, address: Long): Node {
+    val url =
+        when (field) {
+            "galleries" -> "$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 decodeNode(nodedata)
+}
+
+fun getURLAtRange(url: String, range: LongRange): ByteArray {
+    val request = Request.Builder()
+        .url(url)
+        .header("Range", "bytes=${range.first}-${range.last}")
+        .build()
+
+    return client.newCall(request).execute().body()?.use { it.bytes() } ?: byteArrayOf()
+}
+
+@OptIn(ExperimentalUnsignedTypes::class)
+data class Node(
+    val keys: List<UByteArray>,
+    val datas: List<Pair<Long, Int>>,
+    val subNodeAddresses: List<Long>
+)
+
+@OptIn(ExperimentalUnsignedTypes::class)
+fun decodeNode(data: ByteArray): Node {
+    val buffer = ByteBuffer
+        .wrap(data)
+        .order(ByteOrder.BIG_ENDIAN)
+
+    val uData = data.toUByteArray()
+
+    val numberOfKeys = buffer.int
+    val keys = ArrayList<UByteArray>()
+
+    for (i in 0.until(numberOfKeys)) {
+        val keySize = buffer.int
+
+        if (keySize == 0 || keySize > 32)
+            throw Exception("fatal: !keySize || keySize > 32")
+
+        keys.add(uData.sliceArray(buffer.position().until(buffer.position() + keySize)))
+        buffer.position(buffer.position() + keySize)
+    }
+
+    val numberOfDatas = buffer.int
+    val datas = ArrayList<Pair<Long, Int>>()
+
+    for (i in 0.until(numberOfDatas)) {
+        val offset = buffer.long
+        val length = buffer.int
+
+        datas.add(Pair(offset, length))
+    }
+
+    val numberOfSubNodeAddresses = B + 1
+    val subNodeAddresses = ArrayList<Long>()
+
+    for (i in 0.until(numberOfSubNodeAddresses)) {
+        val subNodeAddress = buffer.long
+        subNodeAddresses.add(subNodeAddress)
+    }
+
+    return Node(keys, datas, subNodeAddresses)
+}
+
+@OptIn(ExperimentalUnsignedTypes::class)
+fun bSearch(field: String, key: UByteArray, node: Node): Pair<Long, Int>? {
+    fun compareArrayBuffers(dv1: UByteArray, dv2: UByteArray): Int {
+        val top = min(dv1.size, dv2.size)
+
+        for (i in 0.until(top)) {
+            if (dv1[i] < dv2[i])
+                return -1
+            else if (dv1[i] > dv2[i])
+                return 1
+        }
+
+        return 0
+    }
+
+    fun locateKey(key: UByteArray, node: Node): Pair<Boolean, Int> {
+        for (i in node.keys.indices) {
+            val cmpResult = compareArrayBuffers(key, node.keys[i])
+
+            if (cmpResult <= 0)
+                return Pair(cmpResult == 0, i)
+        }
+
+        return Pair(false, node.keys.size)
+    }
+
+    fun isLeaf(node: Node): Boolean {
+        for (subnode in node.subNodeAddresses)
+            if (subnode != 0L)
+                return false
+
+        return true
+    }
+
+    if (node.keys.isEmpty())
+        return null
+
+    val (there, where) = locateKey(key, node)
+    if (there)
+        return node.datas[where]
+    else if (isLeaf(node))
+        return null
+
+    val nextNode = getNodeAtAddress(field, node.subNodeAddresses[where])
+    return bSearch(field, key, nextNode)
+}
--- 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) 2019  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
@@ -18,15 +18,5 @@

 package xyz.quaver.pupil.types

-import com.arlib.floatingsearchview.suggestions.model.SearchSuggestion
-import kotlinx.android.parcel.Parcelize
-import xyz.quaver.hitomi.Suggestion
-
-@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 {
-        return s
-    }
-}
+class SendLogException : Exception()
+class JavascriptException(message: String?) : Exception(message)
--- a/app/src/main/java/xyz/quaver/pupil/types/Suggestions.kt
+++ b/app/src/main/java/xyz/quaver/pupil/types/Suggestions.kt
@@ -0,0 +1,50 @@
+/*
+ *     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.types
+
+import kotlinx.parcelize.IgnoredOnParcel
+import kotlinx.parcelize.Parcelize
+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)
+
+    @IgnoredOnParcel
+    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 {
-        return super.hashCode()
-    }
+    override fun hashCode() = toString().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 {
-            remove(it)
+        tags.filter { it.toString() == element }.forEach {
+            tags.remove(it)
        }
    }

    fun removeByArea(area: String, isNegative: Boolean? = null) {
-        filter { it.area == area && (if(isNegative == null) true else (it.isNegative == isNegative)) }.forEach {
-            remove(it)
+        tags.filter { it.area == area && (if(isNegative == null) true else (it.isNegative == isNegative)) }.forEach {
+            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
@@ -21,22 +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 {
@@ -49,12 +189,8 @@ class LockActivity : AppCompatActivity() {
            return
        }

-        val mode = intent.getStringExtra("mode")
-
-        lock_pattern.isEnabled = false
-        lock_pin.isEnabled = false
-        lock_fingerprint.isEnabled = false
-        lock_password.isEnabled = false
+        mode = intent.getStringExtra("mode")
+        val force = intent.getBooleanExtra("force", false)

        when(mode) {
            null -> {
@@ -63,52 +199,82 @@ class LockActivity : AppCompatActivity() {
                    finish()
                    return
                }
+
+                if (System.currentTimeMillis() - lastUnlocked < 5*60*1000 && !force) {
+                    lastUnlocked = System.currentTimeMillis()
+                    setResult(RESULT_OK)
+                    finish()
+                    return
+                }
+
+                if (
+                    Preferences["lock_fingerprint"]
+                    && BiometricManager.from(this).canAuthenticate() == BiometricManager.BIOMETRIC_SUCCESS
+                ) {
+                    binding.fingerprintBtn.apply {
+                        isEnabled = true
+                        setOnClickListener {
+                            showBiometricPrompt()
+                        }
+                    }
+                    showBiometricPrompt()
+                }
+
+                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()
                    }
                }
            }
        }
-
-        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
-                                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()
-                            } else {
-                                if (lastPass == it) {
-                                    LockManager(context!!).add(Lock.generate(Lock.Type.PATTERN, it))
-                                    finish()
-                                } else {
-                                    lock_pattern_view.setViewMode(PatternLockView.PatternViewMode.WRONG)
-                                    lastPass = ""
-
-                                    Snackbar.make(view!!, R.string.settings_lock_wrong_confirm, Snackbar.LENGTH_LONG).show()
-                                }
-                            }
-                        }
-                    }
-                }
-            }
-        ).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
@@ -19,44 +19,55 @@
 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.net.Uri
+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.preference.PreferenceManager
+import androidx.core.content.ContextCompat
 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.bumptech.glide.Glide
-import com.crashlytics.android.Crashlytics
 import com.google.android.material.snackbar.Snackbar
-import io.fabric.sdk.android.Fabric
-import kotlinx.android.synthetic.main.activity_reader.*
-import kotlinx.android.synthetic.main.activity_reader.view.*
-import kotlinx.android.synthetic.main.dialog_numberpicker.view.*
+import com.google.firebase.crashlytics.FirebaseCrashlytics
+import com.google.mlkit.vision.face.Face
+import com.qtalk.recyclerviewfastscroller.RecyclerViewFastScroller
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
-import kotlinx.serialization.ImplicitReflectionSerializer
-import xyz.quaver.pupil.Pupil
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.adapters.ReaderAdapter
-import xyz.quaver.pupil.util.GalleryDownloader
-import xyz.quaver.pupil.util.Histories
-import xyz.quaver.pupil.util.ItemClickSupport
-import xyz.quaver.pupil.util.hasPermission
+import xyz.quaver.pupil.databinding.NumberpickerDialogBinding
+import xyz.quaver.pupil.databinding.ReaderActivityBinding
+import xyz.quaver.pupil.favorites
+import xyz.quaver.pupil.services.DownloadService
+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 val images = ArrayList<String>()
-    private var gallerySize = 0
    private var currentPage = 0

    private var isScroll = true
@@ -64,52 +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 {
-            value -> View.VISIBLE
-            else -> View.GONE
+    private lateinit var cache: Cache
+    var downloader: DownloadService? = null
+    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)
+            }
+        }
+
+        override fun onServiceDisconnected(name: ComponentName?) {
+            downloader = null
        }
    }

-    private lateinit var downloader: GalleryDownloader
-
    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)
-
-        if (Fabric.isInitialized())
-            Crashlytics.setInt("GalleryID", galleryID)
+        cache = Cache.getInstance(this, galleryID)
+        FirebaseCrashlytics.getInstance().setCustomKey("GalleryID", galleryID)

        if (galleryID == 0) {
            onBackPressed()
            return
        }

-        initDownloader()
-
+        initDownloadListener()
        initView()
-
-        if (!downloader.download)
-            downloader.start()
    }

    override fun onNewIntent(intent: Intent) {
@@ -122,14 +157,13 @@ class ReaderActivity : AppCompatActivity() {
            val uri = intent.data
            val lastPathSegment = uri?.lastPathSegment
            if (uri != null && lastPathSegment != null) {
-                val nonNumber = Regex("[^-?0-9]+")
-
-                galleryID = when (uri.host) {
-                    "hitomi.la" -> lastPathSegment.replace(nonNumber, "").toInt()
-                    "히요비.asia" -> lastPathSegment.toInt()
-                    "xn--9w3b15m8vo.asia" -> lastPathSegment.toInt()
+                galleryID = if (uri.host?.endsWith("hasha.in") == true) {
+                    lastPathSegment?.toInt() ?: 0
+                } else when (uri.host) {
+                    "hitomi.la" ->
+                        Regex("([0-9]+).html").find(lastPathSegment)?.groupValues?.get(1)?.toIntOrNull() ?: 0
                    "e-hentai.org" -> uri.pathSegments[1].toInt()
-                    else -> return
+                    else -> 0
                }
            }
        } else {
@@ -137,26 +171,10 @@ class ReaderActivity : AppCompatActivity() {
        }
    }

-    override fun onResume() {
-        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 {
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
        menuInflater.inflate(R.menu.reader, menu)

-        with(menu?.findItem(R.id.reader_menu_favorite)) {
-            this ?: return@with
-
+        with(menu.findItem(R.id.reader_menu_favorite)) {
            if (favorites.contains(galleryID))
                (icon as Animatable).start()
        }
@@ -165,20 +183,22 @@ class ReaderActivity : AppCompatActivity() {
        return true
    }

-    override fun onOptionsItemSelected(item: MenuItem?): Boolean {
-        when(item?.itemId) {
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        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)
-                with(view.dialog_number_picker) {
-                    minValue=1
-                    maxValue=gallerySize
-                    value=currentPage
+                // TODO: Switch to DialogFragment
+                val binding = NumberpickerDialogBinding.inflate(layoutInflater, binding.root, false)
+
+                with(binding.numberPicker) {
+                    minValue = 1
+                    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 {
-                    (reader_recyclerview.layoutManager as LinearLayoutManager?)?.scrollToPositionWithOffset(view.dialog_number_picker.value-1, 0)
+                binding.okButton.setOnClickListener {
+                    (this@ReaderActivity.binding.recyclerview.layoutManager as LinearLayoutManager).scrollToPositionWithOffset(binding.numberPicker.value-1, 0)
                    dialog.dismiss()
                }

@@ -201,11 +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()

-        if (::downloader.isInitialized && !downloader.download)
-            downloader.cancel()
+        update = false
+
+        if (!DownloadManager.getInstance(this).isDownloading(galleryID))
+            DownloadService.cancel(this, galleryID)
    }

    override fun onBackPressed() {
@@ -227,12 +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
            }
@@ -240,124 +281,60 @@ class ReaderActivity : AppCompatActivity() {
        }
    }

-    private fun initDownloader() {
-        var d: GalleryDownloader? = GalleryDownloader.get(galleryID)
+    private var update = true
+    private fun initDownloadListener() {
+        CoroutineScope(Dispatchers.Main).launch {
+            while (update) {
+                delay(1000)

-        if (d == null)
-            d = GalleryDownloader(this, galleryID)
+                val downloader = downloader ?: continue

-        downloader = d.apply {
-            onReaderLoadedHandler = {
-                CoroutineScope(Dispatchers.Main).launch {
-                    title = it.title
-                    with(reader_download_progressbar) {
-                        max = it.galleryInfo.size
-                        progress = 0
-                    }
-                    with(reader_progressbar) {
-                        max = it.galleryInfo.size
-                        progress = 0
-                    }
+                if (!downloader.progress.containsKey(galleryID))  //loading
+                    continue

-                    gallerySize = it.galleryInfo.size
-                    menu?.findItem(R.id.reader_menu_page_indicator)?.title = "$currentPage/${it.galleryInfo.size}"
+                if (downloader.progress[galleryID]?.isEmpty() == true) {      //Gallery not found
+                    update = false
+                    Snackbar
+                        .make(binding.root, R.string.reader_failed_to_find_gallery, Snackbar.LENGTH_INDEFINITE)
+                        .show()
+
+                    return@launch
                }
-            }
-            onProgressHandler = {
-                CoroutineScope(Dispatchers.Main).launch {
-                    reader_download_progressbar.progress = it
-                    menu?.findItem(R.id.reader_menu_use_hiyobi)?.isVisible = downloader.useHiyobi
-                }
-            }
-            onDownloadedHandler = {
-                val item = it.toList()
-                CoroutineScope(Dispatchers.Main).launch {
-                    if (images.isEmpty()) {
-                        images.addAll(item)
-                        reader_recyclerview.adapter?.notifyDataSetChanged()
-                    } else {
-                        images.add(item.last())
-                        reader_recyclerview.adapter?.notifyItemInserted(images.size-1)
-                    }
-                }
-            }
-            onErrorHandler = {
-                Snackbar
-                    .make(reader_layout, it.message ?: it.javaClass.name, Snackbar.LENGTH_INDEFINITE)
-                    .setAction(R.string.reader_help) {
-                        startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.error_help))))
-                    }
-                    .show()
-                downloader.download = false
-            }
-            onCompleteHandler = {
-                CoroutineScope(Dispatchers.Main).launch {
-                    reader_download_progressbar.visibility = View.GONE
-                }
-            }
-            onNotifyChangedHandler = { notify ->
-                val fab = reader_fab_download

-                runOnUiThread {
-                    if (notify) {
-                        val icon = AnimatedVectorDrawableCompat.create(this, R.drawable.ic_downloading)
-                        icon?.registerAnimationCallback(object: Animatable2Compat.AnimationCallback() {
-                            override fun onAnimationEnd(drawable: Drawable?) {
-                                if (downloader.download)
-                                    fab.post {
-                                        icon.start()
-                                        fab.labelText = getString(R.string.reader_fab_download_cancel)
-                                    }
-                                else
-                                    fab.post {
-                                        fab.setImageResource(R.drawable.ic_download)
-                                        fab.labelText = getString(R.string.reader_fab_download)
-                                    }
-                            }
-                        })
+                binding.downloadProgressbar.max = binding.recyclerview.adapter?.itemCount ?: 0
+                binding.downloadProgressbar.progress =
+                    downloader.progress[galleryID]?.count { it.isInfinite() } ?: 0

-                        fab.setImageDrawable(icon)
-                        icon?.start()
-                    } else {
-                        runOnUiThread {
-                            fab.setImageResource(R.drawable.ic_download)
+                if (title == getString(R.string.reader_loading)) {
+                    val galleryInfo = cache.metadata.galleryInfo
+
+                    if (galleryInfo != null) {
+                        with(binding.recyclerview.adapter as ReaderAdapter) {
+                            this.galleryInfo = galleryInfo
+                            notifyDataSetChanged()
                        }
+
+                        title = galleryInfo.title
+                        menu?.findItem(R.id.reader_menu_page_indicator)?.title =
+                            "$currentPage/${galleryInfo.files.size}"
+
+                        menu?.findItem(R.id.reader_type)?.icon = ContextCompat.getDrawable(this@ReaderActivity, R.drawable.hitomi)
                    }
                }
-            }
-        }

-        if (downloader.download) {
-            downloader.invokeOnReaderLoaded()
-            downloader.invokeOnNotifyChanged()
+                if (downloader.isCompleted(galleryID)) {   //Download finished
+                    binding.downloadProgressbar.visibility = View.GONE
+
+                    animateDownloadFAB(false)
+                }
+            }
        }
    }

    private fun initView() {
-        with(reader_recyclerview) {
-            adapter = ReaderAdapter(Glide.with(this@ReaderActivity), galleryID, images)
-
-            addOnScrollListener(object: RecyclerView.OnScrollListener() {
-                override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
-                    super.onScrolled(recyclerView, dx, dy)
-
-                    if (dy < 0)
-                        this@ReaderActivity.reader_fab.showMenuButton(true)
-                    else if (dy > 0)
-                        this@ReaderActivity.reader_fab.hideMenuButton(true)
-
-                    val layoutManager = recyclerView.layoutManager as LinearLayoutManager
-
-                    if (layoutManager.findFirstVisibleItemPosition() == -1)
-                        return
-                    currentPage = layoutManager.findFirstVisibleItemPosition()+1
-                    menu?.findItem(R.id.reader_menu_page_indicator)?.title = "$currentPage/$gallerySize"
-                    this@ReaderActivity.reader_progressbar.progress = currentPage
-                }
-            })
-
-            ItemClickSupport.addTo(this)
-                .setOnItemClickListener { _, _, _ ->
+        with(binding.recyclerview) {
+            adapter = ReaderAdapter(this@ReaderActivity, galleryID).apply {
+                onItemClickListener = {
                    if (isScroll) {
                        isScroll = false
                        isFullscreen = true
@@ -365,39 +342,86 @@ 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
                    }
                }
+            }
+
+            addOnScrollListener(object: RecyclerView.OnScrollListener() {
+                override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
+                    super.onScrolled(recyclerView, dx, dy)
+
+                    if (dy < 0)
+                        binding.fab.showMenuButton(true)
+                    else if (dy > 0)
+                        binding.fab.hideMenuButton(true)
+
+                    val layoutManager = recyclerView.layoutManager as LinearLayoutManager
+
+                    if (layoutManager.findFirstVisibleItemPosition() == -1)
+                        return
+                    currentPage = layoutManager.findFirstVisibleItemPosition()+1
+                    menu?.findItem(R.id.reader_menu_page_indicator)?.title = "$currentPage/${recyclerView.adapter!!.itemCount}"
+                }
+            })
        }

-        with(reader_fab_download) {
-            setImageResource(R.drawable.ic_download)
+        with(binding.downloadFab) {
+            animateDownloadFAB(DownloadManager.getInstance(this@ReaderActivity).getDownloadFolder(galleryID) != null) //If download in progress, animate button
+
            setOnClickListener {
+                requestNotificationPermission(
+                    this@ReaderActivity,
+                    requestNotificationPermssionLauncher
+                ) {
+                    val downloadManager = DownloadManager.getInstance(this@ReaderActivity)

-                if (!this@ReaderActivity.hasPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
-                    AlertDialog.Builder(this@ReaderActivity).apply {
-                        setTitle(R.string.warning)
-                        setMessage(R.string.update_no_permission)
-                        setPositiveButton(android.R.string.ok) { _, _ -> }
-                    }.show()
-
-                    return@setOnClickListener
+                    if (downloadManager.isDownloading(galleryID)) {
+                        downloadManager.deleteDownloadFolder(galleryID)
+                        animateDownloadFAB(false)
+                    } else {
+                        downloadManager.addDownloadFolder(galleryID)
+                        DownloadService.download(context, galleryID, true)
+                        animateDownloadFAB(true)
+                    }
                }
-
-                downloader.download = !downloader.download
-
-                if (!downloader.download)
-                    downloader.clearNotification()
            }
        }

-        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)
            }
        }
    }
@@ -407,26 +431,189 @@ 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)
-            reader_recyclerview.layoutManager = LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false)
+            snapHelper.attachToRecyclerView(binding.recyclerview)
+            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(binding.downloadFab) {
+            if (animate) {
+                val icon = AnimatedVectorDrawableCompat.create(context, R.drawable.ic_downloading)
+
+                icon?.registerAnimationCallback(object : Animatable2Compat.AnimationCallback() {
+                    override fun onAnimationEnd(drawable: Drawable?) {
+                        if (downloader?.isCompleted(galleryID) == true) // If download is finished, stop animating
+                            post {
+                                setImageResource(R.drawable.ic_download)
+                                labelText = getString(R.string.reader_fab_download_cancel)
+                            }
+                        else                                                            // Or continue animate
+                            post {
+                                icon.start()
+                                labelText = getString(R.string.reader_fab_download_cancel)
+                            }
+                    }
+                })
+
+                setImageDrawable(icon)
+                icon?.start()
+            } else {
+                setImageResource(R.drawable.ic_download)
+                labelText = getString(R.string.reader_fab_download)
+            }
+        }
+    }
+
+    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
@@ -18,50 +18,15 @@

 package xyz.quaver.pupil.ui

-import android.app.Activity
-import android.content.Intent
 import android.os.Bundle
-import android.text.Editable
-import android.text.TextWatcher
-import android.view.LayoutInflater
 import android.view.MenuItem
-import android.view.WindowManager
-import android.widget.ArrayAdapter
-import android.widget.LinearLayout
-import android.widget.TextView
-import androidx.appcompat.app.AlertDialog
-import androidx.appcompat.app.AppCompatActivity
-import androidx.appcompat.app.AppCompatDelegate
-import androidx.core.content.ContextCompat
-import androidx.preference.Preference
-import androidx.preference.PreferenceFragmentCompat
-import androidx.preference.PreferenceManager
-import com.google.android.material.snackbar.Snackbar
-import kotlinx.android.synthetic.main.dialog_default_query.view.*
-import kotlinx.serialization.ImplicitReflectionSerializer
-import kotlinx.serialization.json.Json
-import kotlinx.serialization.parseList
-import xyz.quaver.pupil.Pupil
 import xyz.quaver.pupil.R
-import xyz.quaver.pupil.types.Tags
-import xyz.quaver.pupil.ui.dialog.DownloadLocationDialog
-import xyz.quaver.pupil.util.*
-import java.io.File
-import java.nio.charset.Charset
-import java.util.*
+import xyz.quaver.pupil.ui.fragment.SettingsFragment

-class SettingsActivity : AppCompatActivity() {
-
-    val REQUEST_LOCK = 38238
-    val REQUEST_RESTORE = 16546
+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()
@@ -70,440 +35,11 @@ class SettingsActivity : AppCompatActivity() {
        supportActionBar?.setDisplayHomeAsUpEnabled(true)
    }

-    override fun onResume() {
-        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()
-    }
-
-    class SettingsFragment : PreferenceFragmentCompat() {
-
-        override fun onResume() {
-            super.onResume()
-
-            val lockManager = LockManager(context!!)
-
-            findPreference<Preference>("app_lock")?.summary = if (lockManager.locks.isNullOrEmpty()) {
-                getString(R.string.settings_lock_none)
-            } else {
-                lockManager.locks?.joinToString(", ") {
-                    when(it.type) {
-                        Lock.Type.PATTERN -> getString(R.string.settings_lock_pattern)
-                        Lock.Type.PIN -> getString(R.string.settings_lock_pin)
-                        Lock.Type.PASSWORD -> getString(R.string.settings_lock_password)
-                    }
-                }
-            }
-        }
-
-        private fun getDirSize(dir: File) : String {
-            val size = dir.walk().map { it.length() }.sum()
-
-            return getString(R.string.settings_clear_summary, byteToString(size))
-        }
-
-        override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
-            setPreferencesFromResource(R.xml.root_preferences, rootKey)
-
-            with(findPreference<Preference>("app_version")) {
-                this!!
-
-                val manager = context.packageManager
-                val info = manager.getPackageInfo(context.packageName, 0)
-
-                summary = context.getString(R.string.settings_app_version_description, info.versionName)
-
-                setOnPreferenceClickListener {
-                    checkUpdate(activity as SettingsActivity, true)
-
-                    true
-                }
-            }
-
-            with(findPreference<Preference>("delete_cache")) {
-                this!!
-
-                val dir = File(context.cacheDir, "imageCache")
-
-                summary = getDirSize(dir)
-
-                onPreferenceClickListener = Preference.OnPreferenceClickListener {
-                    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()
-
-                    true
-                }
-            }
-
-            with(findPreference<Preference>("delete_downloads")) {
-                this!!
-
-                val dir = getDownloadDirectory(context)
-
-                summary = getDirSize(dir)
-
-                onPreferenceClickListener = Preference.OnPreferenceClickListener {
-                    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()
-
-                            val downloads = (activity!!.application as Pupil).downloads
-
-                            downloads.clear()
-
-                            summary = getDirSize(dir)
-                        }
-                        setNegativeButton(android.R.string.no) { _, _ -> }
-                    }.show()
-
-                    true
-                }
-            }
-            with(findPreference<Preference>("clear_history")) {
-                this!!
-
-                val histories = (activity!!.application as Pupil).histories
-
-                summary = getString(R.string.settings_clear_history_summary, histories.size)
-
-                onPreferenceClickListener = Preference.OnPreferenceClickListener {
-                    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()
-
-                    true
-                }
-            }
-
-            with(findPreference<Preference>("dl_location")) {
-                this!!
-
-                summary = getDownloadDirectory(context).absolutePath
-
-                onPreferenceClickListener = Preference.OnPreferenceClickListener {
-                    DownloadLocationDialog(context).apply {
-                        onDownloadLocationChangedListener = { value ->
-                            PreferenceManager.getDefaultSharedPreferences(context).edit()
-                                .putInt(key, value)
-                                .apply()
-                            summary = getDownloadDirectory(context).absolutePath
-                        }
-                    }.show()
-
-                    true
-                }
-            }
-
-            with(findPreference<Preference>("default_query")) {
-                this!!
-
-                val preferences = PreferenceManager.getDefaultSharedPreferences(context)
-
-                summary = preferences.getString("default_query", "") ?: ""
-
-                val languages = resources.getStringArray(R.array.languages).map {
-                    it.split("|").let { split ->
-                        Pair(split[0], split[1])
-                    }
-                }.toMap()
-                val reverseLanguages = languages.entries.associate { (k, v) -> v to k }
-
-                val excludeBL = "-male:yaoi"
-                val excludeGuro = listOf("-female:guro", "-male:guro")
-
-                onPreferenceClickListener = Preference.OnPreferenceClickListener {
-                    val dialogView = LayoutInflater.from(context).inflate(
-                        R.layout.dialog_default_query,
-                        LinearLayout(context),
-                        false
-                    )
-
-                    val tags = Tags.parse(
-                        preferences.getString("default_query", "") ?: ""
-                    )
-
-                    summary = tags.toString()
-
-                    with(dialogView.default_query_dialog_language_selector) {
-                        adapter =
-                            ArrayAdapter(
-                                context,
-                                android.R.layout.simple_spinner_dropdown_item,
-                                arrayListOf(
-                                    getString(R.string.default_query_dialog_language_selector_none)
-                                ).apply {
-                                    addAll(languages.values)
-                                }
-                            )
-                        if (tags.any { it.area == "language" && !it.isNegative }) {
-                            val tag = languages[tags.first { it.area == "language" }.tag]
-                            if (tag != null) {
-                                setSelection(
-                                    @Suppress("UNCHECKED_CAST")
-                                    (adapter as ArrayAdapter<String>).getPosition(tag)
-                                )
-                                tags.removeByArea("language", false)
-                            }
-                        }
-                    }
-
-                    with(dialogView.default_query_dialog_BL_checkbox) {
-                        isChecked = tags.contains(excludeBL)
-                        if (tags.contains(excludeBL))
-                            tags.remove(excludeBL)
-                    }
-
-                    with(dialogView.default_query_dialog_guro_checkbox) {
-                        isChecked = excludeGuro.all { tags.contains(it) }
-                        if (excludeGuro.all { tags.contains(it) })
-                            excludeGuro.forEach {
-                                tags.remove(it)
-                            }
-                    }
-
-                    with(dialogView.default_query_dialog_edittext) {
-                        setText(tags.toString(), TextView.BufferType.EDITABLE)
-                        addTextChangedListener(object : TextWatcher {
-                            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()))
-                            }
-                        })
-                    }
-
-                    val dialog = AlertDialog.Builder(context!!).apply {
-                        setView(dialogView)
-                    }.create()
-
-                    dialogView.default_query_dialog_ok.setOnClickListener {
-                        val newTags = Tags.parse(dialogView.default_query_dialog_edittext.text.toString())
-
-                        with(dialogView.default_query_dialog_language_selector) {
-                            if (selectedItemPosition != 0)
-                                newTags.add("language:${reverseLanguages[selectedItem]}")
-                        }
-
-                        if (dialogView.default_query_dialog_BL_checkbox.isChecked)
-                            newTags.add(excludeBL)
-
-                        if (dialogView.default_query_dialog_guro_checkbox.isChecked)
-                            excludeGuro.forEach { tag ->
-                                newTags.add(tag)
-                            }
-
-                        preferenceManager.sharedPreferences.edit().putString("default_query", newTags.toString()).apply()
-                        summary = preferences.getString("default_query", "") ?: ""
-                        tags.clear()
-                        tags.addAll(newTags)
-                        dialog.dismiss()
-                    }
-
-                    dialog.show()
-
-                    true
-                }
-            }
-            with(findPreference<Preference>("app_lock")) {
-                this!!
-
-                val lockManager = LockManager(context)
-
-                summary = if (lockManager.locks.isNullOrEmpty()) {
-                    getString(R.string.settings_lock_none)
-                } else {
-                    lockManager.locks?.joinToString(", ") {
-                        when(it.type) {
-                            Lock.Type.PATTERN -> getString(R.string.settings_lock_pattern)
-                            Lock.Type.PIN -> getString(R.string.settings_lock_pin)
-                            Lock.Type.PASSWORD -> getString(R.string.settings_lock_password)
-                        }
-                    }
-                }
-
-                onPreferenceClickListener = Preference.OnPreferenceClickListener {
-                    val intent = Intent(context, LockActivity::class.java)
-                    activity?.startActivityForResult(intent, (activity as SettingsActivity).REQUEST_LOCK)
-
-                    true
-                }
-            }
-
-            with(findPreference<Preference>("dark_mode")) {
-                this!!
-
-                onPreferenceChangeListener = Preference.OnPreferenceChangeListener { _, newValue ->
-                    AppCompatDelegate.setDefaultNightMode(when (newValue as Boolean) {
-                            true -> AppCompatDelegate.MODE_NIGHT_YES
-                            false -> AppCompatDelegate.MODE_NIGHT_NO
-                    })
-
-                    true
-                }
-            }
-
-            with(findPreference<Preference>("backup")) {
-                this!!
-
-                onPreferenceClickListener = Preference.OnPreferenceClickListener {
-                    File(ContextCompat.getDataDir(context), "favorites.json").copyTo(
-                        File(getDownloadDirectory(context), "favorites.json"),
-                        true
-                    )
-
-                    Snackbar.make(this@SettingsFragment.listView, R.string.settings_backup_snackbar, Snackbar.LENGTH_LONG)
-                        .show()
-
-                    true
-                }
-            }
-
-            with(findPreference<Preference>("restore")) {
-                this!!
-
-                onPreferenceClickListener = Preference.OnPreferenceClickListener {
-                    val intent = Intent(Intent.ACTION_GET_CONTENT).apply {
-                        addCategory(Intent.CATEGORY_OPENABLE)
-                        type = "*/*"
-                    }
-
-                    activity?.startActivityForResult(intent, (activity as SettingsActivity).REQUEST_RESTORE)
-
-                    true
-                }
-            }
-        }
-    }
-
-    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
-                }
-            }
-        }
-    }
-
-    override fun onOptionsItemSelected(item: MenuItem?): Boolean {
-        when (item?.itemId) {
+    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()
-                    }
-                }
-            }
-            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
@@ -0,0 +1,171 @@
+/*
+ *     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.text.Editable
+import android.text.TextWatcher
+import android.widget.ArrayAdapter
+import androidx.appcompat.app.AlertDialog
+import androidx.fragment.app.DialogFragment
+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 : DialogFragment() {
+
+    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: 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")
+
+    var onPositiveButtonClickListener : ((Tags) -> (Unit))? = null
+
+    private var _binding: DefaultQueryDialogBinding? = null
+    private val binding get() = _binding!!
+
+    private fun initView() {
+        val tags = Tags.parse(
+            Preferences["default_query"]
+        )
+
+        with(binding.languageSelector) {
+            adapter =
+                ArrayAdapter(
+                    context,
+                    android.R.layout.simple_spinner_dropdown_item,
+                    arrayListOf(
+                        context.getString(R.string.default_query_dialog_language_selector_none)
+                    ).apply {
+                        addAll(languages.values)
+                    }
+                )
+            if (tags.any { it.area == "language" && !it.isNegative }) {
+                val tag = languages[tags.first { it.area == "language" }.tag]
+                if (tag != null) {
+                    setSelection(
+                        @Suppress("UNCHECKED_CAST")
+                        (adapter as ArrayAdapter<String>).getPosition(tag)
+                    )
+                    tags.removeByArea("language", false)
+                }
+            }
+        }
+
+        with(binding.BLCheckbox) {
+            isChecked = tags.contains(excludeBL)
+            if (tags.contains(excludeBL))
+                tags.remove(excludeBL)
+        }
+
+        with(binding.guroCheckbox) {
+            isChecked = excludeGuro.all { tags.contains(it) }
+            if (excludeGuro.all { tags.contains(it) })
+                excludeGuro.forEach {
+                    tags.remove(it)
+                }
+        }
+
+        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(
+                    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().lowercase()
+                        )
+                }
+            })
+        }
+    }
+
+    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
@@ -1,78 +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.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 xyz.quaver.pupil.R
-import xyz.quaver.pupil.util.byteToString
-
-@SuppressLint("InflateParams")
-class DownloadLocationDialog(context: Context) : AlertDialog(context) {
-
-    private val preference = PreferenceManager.getDefaultSharedPreferences(context)
-    private val buttons = mutableListOf<RadioButton>()
-    var onDownloadLocationChangedListener : ((Int) -> (Unit))? = null
-
-    init {
-        val view = layoutInflater.inflate(R.layout.dialog_dl_location, null) as LinearLayout
-
-        ContextCompat.getExternalFilesDirs(context, null).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 { button ->
-                        button.isChecked = false
-                    }
-                    button.performClick()
-                    onDownloadLocationChangedListener?.invoke(index)
-                }
-                buttons.add(button)
-            })
-        }
-
-        buttons[preference.getInt("dl_location", 0)].isChecked = true
-
-        setTitle(R.string.settings_dl_location)
-
-        setView(view)
-
-        setButton(Dialog.BUTTON_POSITIVE, context.getText(android.R.string.ok)) { _, _ ->
-            dismiss()
-        }
-    }
-
-}
--- 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 +1,156 @@
+/*
+ *     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.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 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
+
+                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 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()
+
+                val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE).apply {
+                    putExtra("android.content.extra.SHOW_ADVANCED", true)
+                }
+
+                requestDownloadFolderLauncher.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
@@ -18,53 +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 com.google.android.material.chip.Chip
+import androidx.viewpager2.widget.ViewPager2
 import com.google.android.material.snackbar.Snackbar
-import kotlinx.android.synthetic.main.dialog_galleryblock.*
-import kotlinx.android.synthetic.main.gallery_details.view.*
-import kotlinx.android.synthetic.main.item_gallery_details.view.*
-import kotlinx.coroutines.*
-import xyz.quaver.hitomi.Gallery
-import xyz.quaver.hitomi.GalleryBlock
-import xyz.quaver.hitomi.getGallery
-import xyz.quaver.hitomi.getGalleryBlock
-import xyz.quaver.pupil.BuildConfig
-import xyz.quaver.pupil.Pupil
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import xyz.quaver.pupil.hitomi.Gallery
+import xyz.quaver.pupil.hitomi.getGallery
 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.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) {
-
-    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)
+class GalleryDialog(context: Context, private val galleryID: Int) : AlertDialog(context) {

    val onChipClickedHandler = ArrayList<((Tag) -> (Unit))>()

+    private lateinit var binding: GalleryDialogBinding
+
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
-        setContentView(R.layout.dialog_galleryblock)
+        binding = GalleryDialogBinding.inflate(layoutInflater)
+        setContentView(binding.root)

        window?.attributes.apply {
            this ?: return@apply
@@ -73,13 +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)
            }
        }

@@ -87,12 +82,12 @@ class GalleryDialog(context: Context, private val galleryID: Int) : Dialog(conte
            try {
                val gallery = getGallery(galleryID)

-                launch(Dispatchers.Main) {
-                    gallery_progressbar.visibility = View.GONE
-                    gallery_title.text = gallery.title
-                    gallery_artist.text = gallery.artists.joinToString(", ") { it.wordCapitalize() }
+                launch (Dispatchers.Main) {
+                    binding.progressbar.visibility = View.GONE
+                    binding.title.text = gallery.title
+                    binding.artist.text = gallery.artists.joinToString(", ") { it.wordCapitalize() }

-                    with(gallery_type) {
+                    with(binding.type) {
                        text = gallery.type.wordCapitalize()
                        setOnClickListener {
                            gallery.type.let {
@@ -109,28 +104,26 @@ class GalleryDialog(context: Context, private val galleryID: Int) : Dialog(conte
                        }
                    }

-                    Glide.with(context)
-                        .load(gallery.cover)
-                        .apply {
-                            if (BuildConfig.CENSOR)
-                                override(5, 8)
-                        }.into(gallery_cover)
+                    binding.cover.showImage(Uri.parse(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)
-        
-        inflater.inflate(R.layout.gallery_details, gallery_contents, false).apply {
-            gallery_details.setText(R.string.gallery_details)
+        GalleryDialogDetailsBinding.inflate(layoutInflater, binding.contents, true).apply {
+            type.setText(R.string.gallery_details)

            listOf(
                R.string.gallery_artists,
@@ -146,7 +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
@@ -156,33 +160,14 @@ class GalleryDialog(context: Context, private val galleryID: Int) : Dialog(conte
                    }
                )
            ).filter {
-                (_, content) -> content.isNotEmpty()
+                    (_, content) -> content.isNotEmpty()
            }.forEach { (title, content) ->
-                inflater.inflate(R.layout.item_gallery_details, gallery_details_contents, false).apply {
-                    gallery_details_type.setText(title)
+                GalleryDialogTagsBinding.inflate(layoutInflater, contents, true).apply {
+                    type.setText(title)

                    content.forEach { tag ->
-                        gallery_details_tags.addView(
-                            Chip(context).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()
-                                }
-
+                        tags.addView(
+                            TagChip(context, tag).apply {
                                setOnClickListener {
                                    onChipClickedHandler.forEach { handler ->
                                        handler.invoke(tag)
@@ -191,37 +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 {
-            gallery_details.setText(R.string.gallery_thumbnails)
-
-            RecyclerView(context).apply {
-                layoutManager = GridLayoutManager(context, 3)
-                adapter = ThumbnailAdapter(glide, gallery.thumbnails)
-            }.let {
-                gallery_details_contents.addView(it, LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT))
+            val pager = ViewPager2(context).apply {
+                adapter = ThumbnailPageAdapter(gallery.thumbnails)
+                layoutParams = ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT)
+            }
+
+            contents.addView(
+                pager,
+                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 = ArrayList<Pair<GalleryBlock, Deferred<String>>>()
+        val galleries = mutableListOf<Int>()

-        val adapter = GalleryBlockAdapter(glide, galleries).apply {
+        val adapter = GalleryBlockAdapter(galleries).apply {
            onChipClickedHandler.add { tag ->
                this@GalleryDialog.onChipClickedHandler.forEach { handler ->
                    handler.invoke(tag)
@@ -229,38 +213,21 @@ class GalleryDialog(context: Context, private val galleryID: Int) : Dialog(conte
            }
        }

-        CoroutineScope(Dispatchers.Main).launch {
-            gallery.related.forEachIndexed { i, galleryID ->
-                async(Dispatchers.IO) {
-                    getGalleryBlock(galleryID)
-                }.let {
-                    val galleryBlock = it.await() ?: return@let
+        GalleryDialogDetailsBinding.inflate(layoutInflater, binding.contents, true).apply {
+            type.setText(R.string.gallery_related)

-                    galleries.add(Pair(galleryBlock, GlobalScope.async { galleryBlock.thumbnails.first() }))
-                    adapter.notifyItemInserted(i)
-                }
-            }
-        }
-
-        inflater.inflate(R.layout.gallery_details, gallery_contents, false).apply {
-            gallery_details.setText(R.string.gallery_related)
-
-            RecyclerView(context).apply {
+            contents.addView(RecyclerView(context).apply {
                layoutManager = LinearLayoutManager(context)
                this.adapter = adapter

-                ItemClickSupport.addTo(this)
-                    .setOnItemClickListener { _, position, _ ->
+                ItemClickSupport.addTo(this).apply {
+                    onItemClickListener = { _, position, _ ->
                        context.startActivity(Intent(context, ReaderActivity::class.java).apply {
-                            putExtra("galleryID", galleries[position].first.id)
+                            putExtra("galleryID", galleries[position])
                        })
-                        (context.applicationContext as Pupil).histories.add(galleries[position].first.id)
                    }
-                    .setOnItemLongClickListener { _, position, _ ->
-                        GalleryDialog(
-                            context,
-                            galleries[position].first.id
-                        ).apply {
+                    onItemLongClickListener = { _, position, _ ->
+                        GalleryDialog(context, galleries[position]).apply {
                            onChipClickedHandler.add { tag ->
                                this@GalleryDialog.onChipClickedHandler.forEach { it.invoke(tag) }
                            }
@@ -268,11 +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))
+                }
+            })
+
+            CoroutineScope(Dispatchers.IO).launch {
+                gallery.related.forEach { galleryID ->
+                    Cache.getInstance(context, galleryID).getGalleryBlock()?.let {
+                        galleries.add(galleryID)
+                    }
+                }
+
+                withContext(Dispatchers.Main) {
+                    adapter.notifyDataSetChanged()
+                }
            }
-        }.let {
-            gallery_contents.addView(it)
        }
    }

--- 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/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
@@ -16,7 +16,7 @@
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

-package xyz.quaver.pupil.ui
+package xyz.quaver.pupil.ui.fragment

 import android.os.Bundle
 import android.view.LayoutInflater
@@ -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 kotlinx.android.synthetic.main.fragment_pattern_lock.view.*
-import xyz.quaver.pupil.R
+import xyz.quaver.pupil.databinding.PatternLockFragmentBinding

-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? {
-        return inflater.inflate(R.layout.fragment_pattern_lock, container, false).apply {
-            lock_pattern_view.addPatternLockListener(this@PatternLockFragment)
-        }
+    ): View {
+        _binding = PatternLockFragmentBinding.inflate(inflater, container, false)
+        binding.patternLockView.addPatternLockListener(object: PatternLockViewListener {
+            override fun onComplete(pattern: MutableList<PatternLockView.Dot>?) {
+                val password = PatternLockUtils.patternToMD5(binding.patternLockView, pattern)
+                onPatternDrawn?.invoke(password)
+            }
+
+            override fun onCleared() {}
+            override fun onProgress(progressPattern: MutableList<PatternLockView.Dot>?) {}
+            override fun onStarted() {}
+        })
+        return binding.root
    }

-    override fun onCleared() {
-
-    }
-
-    override fun onComplete(pattern: MutableList<PatternLockView.Dot>?) {
-        val password = PatternLockUtils.patternToMD5(lock_pattern_view, pattern)
-        onPatternDrawn?.invoke(password)
-    }
-
-    override fun onProgress(progressPattern: MutableList<PatternLockView.Dot>?) {
-
-    }
-
-    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
@@ -0,0 +1,318 @@
+/*
+ *     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.*
+import android.os.Bundle
+import android.util.Log
+import android.widget.Toast
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.appcompat.app.AppCompatDelegate
+import androidx.preference.*
+import com.google.android.gms.oss.licenses.OssLicensesMenuActivity
+import com.google.firebase.crashlytics.FirebaseCrashlytics
+import com.google.firebase.crashlytics.internal.model.CrashlyticsReport
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+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.TransferActivity
+import xyz.quaver.pupil.ui.dialog.*
+import xyz.quaver.pupil.util.*
+import xyz.quaver.pupil.util.downloader.DownloadManager
+import java.util.*
+import java.util.concurrent.Executors
+
+class SettingsFragment :
+    PreferenceFragmentCompat(),
+    Preference.OnPreferenceClickListener,
+    Preference.OnPreferenceChangeListener,
+    SharedPreferences.OnSharedPreferenceChangeListener {
+
+    private val lockLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
+        if (it.resultCode == Activity.RESULT_OK) {
+            parentFragmentManager
+                .beginTransaction()
+                .replace(R.id.settings, LockSettingsFragment())
+                .addToBackStack("Lock")
+                .commitAllowingStateLoss()
+        }
+    }
+
+    override fun onResume() {
+        super.onResume()
+
+        val lockManager = LockManager(requireContext())
+
+        findPreference<Preference>("app_lock")?.summary = if (lockManager.locks.isNullOrEmpty()) {
+            getString(R.string.settings_lock_none)
+        } else {
+            lockManager.locks?.joinToString(", ") {
+                when(it.type) {
+                    Lock.Type.PATTERN -> getString(R.string.settings_lock_pattern)
+                    Lock.Type.PIN -> getString(R.string.settings_lock_pin)
+                    Lock.Type.PASSWORD -> getString(R.string.settings_lock_password)
+                }
+            }
+        }
+    }
+
+    override fun onPreferenceClick(preference: Preference): Boolean {
+        with (preference) {
+            when (key) {
+                "app_version" -> {
+                    checkUpdate(activity as SettingsActivity, true)
+                }
+                "download_folder" -> {
+                    DownloadLocationDialogFragment().show(parentFragmentManager, "Download Location Dialog")
+                }
+                "default_query" -> {
+                    DefaultQueryDialog().apply {
+                        onPositiveButtonClickListener = { newTags ->
+                            Preferences["default_query"] = newTags.toString()
+                            summary = newTags.toString()
+                        }
+                    }.show(parentFragmentManager, "Default Query Dialog")
+                }
+                "app_lock" -> {
+                    val intent = Intent(requireContext(), LockActivity::class.java).apply {
+                        putExtra("force", true)
+                    }
+                    lockLauncher.launch(intent)
+                }
+                "proxy" -> {
+                    ProxyDialogFragment().show(parentFragmentManager, "Proxy Dialog")
+                }
+                "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()
+                }
+                "transfer_data" -> {
+                    activity?.startActivity(Intent(activity, TransferActivity::class.java))
+                }
+                else -> return false
+            }
+        }
+
+        return true
+    }
+
+    override fun onPreferenceChange(preference: Preference, newValue: Any?): Boolean {
+        with (preference) {
+            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
+                        false -> AppCompatDelegate.MODE_NIGHT_NO
+                    })
+                }
+                else -> return false
+            }
+        }
+
+        return true
+    }
+
+    override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences?, key: String?) {
+        key ?: return
+
+        with(findPreference<Preference>(key)) {
+            this ?: return
+
+            when (key) {
+                "proxy" -> {
+                    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
+            }
+        }
+    }
+
+    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) {
+
+            preferenceScreen.getPreference(i).run {
+                if (this is PreferenceCategory)
+                    (0 until preferenceCount).map { getPreference(it) }
+                else
+                    listOf(this)
+            }.forEach { preference ->
+                with (preference) with@{
+
+                    when (key) {
+                        "app_version" -> {
+                            val manager = requireContext().packageManager
+                            val info = manager.getPackageInfo(requireContext().packageName, 0)
+                            summary = requireContext().getString(R.string.settings_app_version_description, info.versionName)
+
+                            onPreferenceClickListener = this@SettingsFragment
+                        }
+                        "download_folder_name" -> {
+                            summary = Preferences["download_folder_name", "[-id-] -title-"]
+
+                            setOnPreferenceClickListener {
+                                DownloadFolderNameDialogFragment().show(requireActivity().supportFragmentManager, "Download Location Dialog")
+
+                                true
+                            }
+                        }
+                        "download_folder" -> {
+                            summary = FileX(context, Preferences.get<String>("download_folder")).canonicalPath
+
+                            onPreferenceClickListener = this@SettingsFragment
+                        }
+                        "nomedia" -> {
+                            (this as SwitchPreferenceCompat).isChecked = kotlin.runCatching {
+                                DownloadManager.getInstance(context).downloadFolder.getChild(".nomedia").exists()
+                            }.getOrDefault(false)
+
+                            onPreferenceChangeListener = this@SettingsFragment
+                        }
+                        "default_query" -> {
+                            summary = Preferences.get<String>("default_query")
+
+                            onPreferenceClickListener = this@SettingsFragment
+                        }
+                        "app_lock" -> {
+                            val lockManager = LockManager(requireContext())
+                            summary =
+                                if (lockManager.locks.isNullOrEmpty()) {
+                                    getString(R.string.settings_lock_none)
+                                } else {
+                                    lockManager.locks?.joinToString(", ") {
+                                        when (it.type) {
+                                            Lock.Type.PATTERN -> getString(R.string.settings_lock_pattern)
+                                            Lock.Type.PIN -> getString(R.string.settings_lock_pin)
+                                            Lock.Type.PASSWORD -> getString(R.string.settings_lock_password)
+                                        }
+                                    }
+                                }
+
+                            onPreferenceClickListener = this@SettingsFragment
+                        }
+                        "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
+                        }
+                        "old_import_galleries" -> {
+                            onPreferenceClickListener = this@SettingsFragment
+                        }
+                        "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().lowercase())
+    }
+
+    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/GalleryDownloader.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/GalleryDownloader.kt
@@ -1,325 +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 android.app.PendingIntent
-import android.content.Context
-import android.content.ContextWrapper
-import android.content.Intent
-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 kotlinx.coroutines.*
-import kotlinx.serialization.json.Json
-import kotlinx.serialization.json.JsonConfiguration
-import xyz.quaver.hitomi.Reader
-import xyz.quaver.hitomi.getReader
-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.Pupil
-import xyz.quaver.pupil.R
-import xyz.quaver.pupil.ui.ReaderActivity
-import java.io.File
-import java.io.FileOutputStream
-import java.net.URL
-import java.util.*
-import javax.net.ssl.HttpsURLConnection
-import kotlin.collections.ArrayList
-import kotlin.concurrent.schedule
-
-class GalleryDownloader(
-    base: Context,
-    private val galleryID: Int,
-    _notify: Boolean = false
-) : ContextWrapper(base) {
-
-    private val downloads = (applicationContext as Pupil).downloads
-    var useHiyobi = PreferenceManager.getDefaultSharedPreferences(this).getBoolean("use_hiyobi", false)
-
-    var download: Boolean = false
-        set(value) {
-            if (value) {
-                field = true
-                notificationManager.notify(galleryID, notificationBuilder.build())
-
-                if (reader?.isActive == false && downloadJob?.isActive != true) {
-                    val data = File(getDownloadDirectory(this), galleryID.toString())
-                    val cache = File(cacheDir, "imageCache/$galleryID")
-
-                    if (File(cache, "images").exists() && !data.exists()) {
-                        cache.copyRecursively(data, true)
-                        cache.deleteRecursively()
-                    }
-
-                    field = false
-                }
-
-                downloads.add(galleryID)
-            } else {
-                field = false
-            }
-
-            onNotifyChangedHandler?.invoke(value)
-        }
-
-    private val reader: Deferred<Reader?>?
-    private var downloadJob: Job? = null
-
-    private lateinit var notificationBuilder: NotificationCompat.Builder
-    private lateinit var notificationManager: NotificationManagerCompat
-
-    var onReaderLoadedHandler: ((Reader) -> Unit)? = null
-    var onProgressHandler: ((Int) -> Unit)? = null
-    var onDownloadedHandler: ((List<String>) -> Unit)? = null
-    var onErrorHandler: ((Exception) -> Unit)? = null
-    var onCompleteHandler: (() -> Unit)? = null
-    var onNotifyChangedHandler: ((Boolean) -> Unit)? = null
-
-    companion object : SparseArray<GalleryDownloader>()
-
-    init {
-        put(galleryID, this)
-
-        initNotification()
-
-        reader = CoroutineScope(Dispatchers.IO).async {
-            try {
-                download = _notify
-                val json = Json(JsonConfiguration.Stable)
-                val serializer = Reader.serializer()
-
-                //Check cache
-                val cache = File(getCachedGallery(this@GalleryDownloader, galleryID), "reader.json")
-
-                try {
-                    json.parse(serializer, cache.readText())
-                } catch(e: Exception) {
-                    cache.delete()
-                }
-
-                if (cache.exists()) {
-                    val cached = json.parse(serializer, cache.readText())
-
-                    if (cached.galleryInfo.isNotEmpty()) {
-                        useHiyobi = cached.code == Reader.Code.HIYOBI
-
-                        onReaderLoadedHandler?.invoke(cached)
-
-                        return@async cached
-                    }
-                }
-
-                //Cache doesn't exist. Load from internet
-                val reader = when {
-                    useHiyobi -> {
-                        try {
-                            xyz.quaver.hiyobi.getReader(galleryID)
-                        } catch(e: Exception) {
-                            useHiyobi = false
-                            getReader(galleryID)
-                        }
-                    }
-                    else -> {
-                        getReader(galleryID)
-                    }
-                }
-
-                if (reader.galleryInfo.isNotEmpty()) {
-                    //Save cache
-                    if (cache.parentFile?.exists() == false)
-                        cache.parentFile!!.mkdirs()
-
-                    cache.writeText(json.stringify(serializer, reader))
-                }
-
-                reader
-            } catch (e: Exception) {
-                Crashlytics.logException(e)
-                onErrorHandler?.invoke(e)
-                null
-            }
-        }
-    }
-
-    fun start() {
-        downloadJob = CoroutineScope(Dispatchers.Default).launch {
-            val reader = reader!!.await() ?: return@launch
-
-            notificationBuilder.setContentTitle(reader.title)
-
-            val list = ArrayList<String>()
-
-            onReaderLoadedHandler?.invoke(reader)
-
-            notificationBuilder
-                .setProgress(reader.galleryInfo.size, 0, false)
-                .setContentText("0/${reader.galleryInfo.size}")
-
-            reader.galleryInfo.chunked(4).forEachIndexed { chunkIndex, chunked ->
-                chunked.mapIndexed { i, galleryInfo ->
-                    val index = chunkIndex*4+i
-
-                    async(Dispatchers.IO) {
-                        val url = when(useHiyobi) {
-                            true -> createImgList(galleryID, reader)[index].path
-                            false -> when {
-                                (!galleryInfo.hash.isNullOrBlank()) and (galleryInfo.haswebp == 1) ->
-                                    urlFromUrlFromHash(galleryID, galleryInfo, "webp")
-                                else ->
-                                    urlFromUrlFromHash(galleryID, galleryInfo)
-                            }
-                        }
-
-                        val name = "$index".padStart(4, '0')
-                        val ext = url.split('.').last()
-
-                        val cache = File(getCachedGallery(this@GalleryDownloader, galleryID), "images/$name.$ext")
-
-                        if (!cache.exists())
-                            try {
-                                with(URL(url).openConnection() as HttpsURLConnection) {
-                                    if (useHiyobi) {
-                                        setRequestProperty("User-Agent", user_agent)
-                                        setRequestProperty("Cookie", cookie)
-                                    } else
-                                        setRequestProperty("Referer", getReferer(galleryID))
-
-                                    if (cache.parentFile?.exists() == false)
-                                        cache.parentFile!!.mkdirs()
-
-                                    inputStream.copyTo(FileOutputStream(cache))
-                                }
-                            } catch (e: Exception) {
-                                cache.delete()
-
-                                onErrorHandler?.invoke(e)
-
-                                notificationBuilder
-                                    .setContentTitle(reader.title)
-                                    .setContentText(getString(R.string.reader_notification_error))
-                                    .setProgress(0, 0, false)
-
-                                notificationManager.notify(galleryID, notificationBuilder.build())
-                            }
-
-                        "images/$name.$ext"
-                    }
-                }.forEach {
-                    list.add(it.await())
-
-                    val index = list.size
-
-                    onProgressHandler?.invoke(index)
-
-                    notificationBuilder
-                        .setProgress(reader.galleryInfo.size, index, false)
-                        .setContentText("$index/${reader.galleryInfo.size}")
-
-                    if (download)
-                        notificationManager.notify(galleryID, notificationBuilder.build())
-
-                    onDownloadedHandler?.invoke(list)
-                }
-            }
-
-            Timer(false).schedule(1000) {
-                notificationBuilder
-                    .setContentTitle(reader.title)
-                    .setContentText(getString(R.string.reader_notification_complete))
-                    .setProgress(0, 0, false)
-
-                if (download) {
-                    File(cacheDir, "imageCache/${galleryID}").let {
-                        if (it.exists()) {
-                            val target = File(getDownloadDirectory(this@GalleryDownloader), galleryID.toString())
-
-                            if (!target.exists())
-                                target.mkdirs()
-
-                            it.copyRecursively(target, true)
-                            it.deleteRecursively()
-                        }
-                    }
-
-                    notificationManager.notify(galleryID, notificationBuilder.build())
-
-                    download = false
-                }
-
-                onCompleteHandler?.invoke()
-            }
-
-            remove(galleryID)
-        }
-    }
-
-    fun cancel() {
-        downloadJob?.cancel()
-
-        remove(galleryID)
-    }
-
-    suspend fun cancelAndJoin() {
-        downloadJob?.cancelAndJoin()
-
-        remove(galleryID)
-    }
-
-    fun invokeOnReaderLoaded() {
-        CoroutineScope(Dispatchers.Default).launch {
-            onReaderLoadedHandler?.invoke(reader?.await() ?: return@launch)
-        }
-    }
-
-    fun clearNotification() {
-        notificationManager.cancel(galleryID)
-    }
-
-    fun invokeOnNotifyChanged() {
-        onNotifyChangedHandler?.invoke(download)
-    }
-
-    private fun initNotification() {
-        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)
-        }
-
-        notificationManager = NotificationManagerCompat.from(this)
-
-        notificationBuilder = 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)
-            setContentIntent(pendingIntent)
-            setProgress(0, 0, true)
-            priority = NotificationCompat.PRIORITY_LOW
-        }
-    }
-
-}
--- 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/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
@@ -19,46 +19,49 @@
 package xyz.quaver.pupil.util

 import android.content.Context
-import androidx.core.content.ContextCompat
-import androidx.preference.PreferenceManager
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+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

-fun getCachedGallery(context: Context, galleryID: Int): File {
-    return File(getDownloadDirectory(context), galleryID.toString()).let {
-        when {
-            it.exists() -> it
-            else -> File(context.cacheDir, "imageCache/$galleryID")
-        }
-    }
-}
+val mutex = Mutex()
+fun cleanCache(context: Context) = CoroutineScope(Dispatchers.IO).launch {
+    if (mutex.isLocked) return@launch

-fun getDownloadDirectory(context: Context): File {
-    val dlLocation = PreferenceManager.getDefaultSharedPreferences(context).getInt("dl_location", 0)
+    mutex.withLock {
+        val cacheFolder = File(context.cacheDir, "imageCache")
+        val downloadManager = DownloadManager.getInstance(context)

-    return ContextCompat.getExternalFilesDirs(context, null)[dlLocation]
-}
+        val limit = (Preferences.get<String>("cache_limit").toLongOrNull() ?: 0L)*1024*1024*1024

-fun URL.download(to: File, onDownloadProgress: ((Long, Long) -> Unit)? = null) {
-    to.outputStream().use { out ->
+        if (limit == 0L) return@withLock

-        with(openConnection()) {
-            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)
-                }
+        val cacheSize = {
+            var size = 0L

+            cacheFolder.walk().forEach {
+                size += it.length()
            }
+
+            size
        }

+        if (cacheSize.invoke() > limit)
+            while (cacheSize.invoke() > limit/2) {
+                val caches = cacheFolder.list() ?: return@withLock
+
+                synchronized(histories) {
+                    (histories.firstOrNull {
+                        caches.contains(it.toString()) && !downloadManager.isDownloading(it)
+                    } ?: return@withLock).let {
+                        Cache.delete(context, it)
+                    }
+                }
+            }
    }
 }
--- 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
@@ -18,53 +18,177 @@

 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
-import kotlin.math.round

-//Android Q+ uses scoped storage thus not requiring permission
-fun Context.hasPermission(permission: String) =
-    Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q || ContextCompat.checkSelfPermission(this, permission) == PackageManager.PERMISSION_GRANTED
-
-@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.getDefault()))
+        result.add(word.replaceFirstChar { if (it.isLowerCase()) it.titlecase(Locale.US) else it.toString() })

    return result.joinToString(" ")
 }

-
-//https://discuss.kotlinlang.org/t/how-do-you-round-a-number-to-n-decimal-places/8843(fvasco)
-fun Double.round(decimals: Int): Double {
-    var multiplier = 1.0
-    repeat(decimals) { multiplier *= 10 }
-    return round(this * multiplier) / multiplier
-}
+private val suffix = listOf(
+    "B",
+    "kB",
+    "MB",
+    "GB",
+    "TB" //really?
+)

 fun byteToString(byte: Long, precision : Int = 1) : String {
-
-    val suffix = listOf(
-        "B",
-        "kB",
-        "MB",
-        "GB",
-        "TB" //really?
-    )
-    var size = byte.toDouble()
-    var suffixIndex = 0
+    var size = byte.toDouble(); var suffixIndex = 0

    while (size >= 1024) {
        size /= 1024
        suffixIndex++
    }

-    return "${size.round(precision)} ${suffix[suffixIndex]}"
+    return "%.${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
@@ -18,55 +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.webkit.MimeTypeMap
+import android.net.Uri
+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.core.content.FileProvider
-import androidx.lifecycle.Lifecycle
 import androidx.preference.PreferenceManager
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
-import kotlinx.serialization.InternalSerializationApi
-import kotlinx.serialization.internal.EnumSerializer
 import kotlinx.serialization.json.*
+import okhttp3.Call
+import okhttp3.Callback
+import okhttp3.Request
+import okhttp3.Response
 import ru.noties.markwon.Markwon
-import xyz.quaver.availableInHiyobi
-import xyz.quaver.hitomi.Reader
-import xyz.quaver.pupil.BuildConfig
-import xyz.quaver.pupil.R
+import xyz.quaver.pupil.*
+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))
-            true
-        else
-            it.jsonObject["prerelease"]?.boolean == false
+        Preferences["beta"] || it.jsonObject["prerelease"]?.jsonPrimitive?.booleanOrNull == 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
@@ -75,14 +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: AppCompatActivity, force: Boolean = false) {
+fun checkUpdate(context: Context, force: Boolean = false) {

    val preferences = PreferenceManager.getDefaultSharedPreferences(context)
    val ignoreUpdateUntil = preferences.getLong("ignore_update_until", 0)
@@ -91,11 +83,11 @@ 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) {
-            Locale.KOREAN -> "한국어"
-            Locale.JAPANESE -> "日本語"
+        val target = when(locale.language) {
+            "ko" -> "한국어"
+            "ja" -> "日本語"
            else -> "English"
        }

@@ -129,12 +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

@@ -142,52 +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) { _, _ ->
-
-                val notificationManager = NotificationManagerCompat.from(context)
-                val builder = NotificationCompat.Builder(context, "download").apply {
-                    setContentTitle(context.getString(R.string.update_notification_description))
-                    setSmallIcon(android.R.drawable.stat_sys_download)
-                    priority = NotificationCompat.PRIORITY_LOW
+            setPositiveButton(android.R.string.ok) { _, _ ->
+                if (!checkNotificationEnabled(context)) {
+                    showNotificationPermissionExplanationDialog(context)
+                    return@setPositiveButton
                }

-                CoroutineScope(Dispatchers.IO).launch {
-                    val target = File(getDownloadDirectory(context), "Pupil.apk")
+                val downloadManager = context.getSystemService(Context.DOWNLOAD_SERVICE) as DownloadManager

-                    URL(url).download(target) { progress, fileSize ->
-                        builder.setProgress(fileSize.toInt(), progress.toInt(), false)
-                        notificationManager.notify(UPDATE_NOTIFICATION_ID, builder.build())
-                    }
+                //Cancel any download queued before

-                    val install = Intent(Intent.ACTION_VIEW).apply {
-                        flags = Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_GRANT_READ_URI_PERMISSION
-                        setDataAndType(FileProvider.getUriForFile(
-                            context,
-                            context.applicationContext.packageName + ".fileprovider",
-                            target
-                        ), MimeTypeMap.getSingleton().getExtensionFromMimeType(".apk"))
-                    }
+                val id: Long = Preferences["update_download_id"]

-                    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))
-                    }
+                if (id != -1L)
+                    downloadManager.remove(id)

-                    notificationManager.cancel(UPDATE_NOTIFICATION_ID)
+                val target = File(context.getExternalFilesDir(null), "Pupil.apk").also {
+                    it.delete()
+                }

-                    if (context.lifecycle.currentState.isAtLeast(Lifecycle.State.RESUMED))
-                        context.startActivity(install)
-                    else
-                        notificationManager.notify(UPDATE_NOTIFICATION_ID, builder.build())
+                val request = DownloadManager.Request(Uri.parse(url))
+                    .setTitle(context.getText(R.string.update_notification_description))
+                    .setDestinationUri(Uri.fromFile(target))
+
+                downloadManager.enqueue(request).also {
+                    Preferences["update_download_id"] = it
                }
            }
-            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()
            }
        }
@@ -198,57 +175,40 @@ fun checkUpdate(context: AppCompatActivity, force: Boolean = false) {
    }
 }

-fun getOldReaderGalleries(context: Context) : List<File> {
-    val oldGallery = mutableListOf<File>()
-
-    listOf(
-        getDownloadDirectory(context),
-        File(context.cacheDir, "imageCache")
-    ).forEach { root ->
-        root.listFiles()?.forEach { gallery ->
-            File(gallery, "reader.json").let { readerFile ->
-                if (!readerFile.exists())
-                    return@let
-
-                try {
-                    Json(JsonConfiguration.Stable).parseJson(readerFile.readText())
-                        .jsonObject.let { reader ->
-                        if (!reader.contains("code"))
-                            oldGallery.add(gallery)
-                    }
-                } catch (e: Exception) {
-                    // do nothing
-                }
-            }
-        }
+fun restore(url: String, onFailure: ((Throwable) -> Unit)? = null, onSuccess: ((Int) -> Unit)? = null) {
+    if (!URLUtil.isValidUrl(url)) {
+        onFailure?.invoke(IllegalArgumentException())
+        return
    }

-    return oldGallery
-}
+    val request = Request.Builder()
+        .url(url)
+        .get()
+        .build()

-@UseExperimental(InternalSerializationApi::class)
-fun updateOldReaderGalleries(context: Context) {
+    client.newCall(request).enqueue(object: Callback {
+        override fun onFailure(call: Call, e: IOException) {
+            onFailure?.invoke(e)
+        }

-    val json = Json(JsonConfiguration.Stable)
+        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() } ?: "[]")

-   getOldReaderGalleries(context).forEach { gallery ->
-       val reader = json.parseJson(File(gallery, "reader.json").apply {
-           if (!exists())
-               return@forEach
-       }.readText())
-           .jsonObject.toMutableMap()
+                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()

-       val codeSerializer = EnumSerializer(Reader.Code::class)
-
-       reader["code"] = when {
-           (File(gallery, "images").list()?.
-               all { !it.endsWith("webp") } ?: return@forEach) &&
-                   availableInHiyobi(gallery.name.toIntOrNull() ?: return@forEach)
-                -> json.toJson(codeSerializer, Reader.Code.HIYOBI)
-           else -> json.toJson(codeSerializer, Reader.Code.HITOMI)
-       }
-
-       File(gallery, "reader.json").writeText(JsonObject(reader).toString())
-   }
+                        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/layout/item_reader.xml
+++ b/app/src/main/res/layout/item_reader.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
@@ -17,9 +17,8 @@
  ~     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  -->

-<ImageView xmlns:android="http://schemas.android.com/apk/res/android"
-    android:contentDescription="@string/reader_imageview_description"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:minHeight="100dp"
-    android:paddingBottom="8dp"/>
+<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/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 +17,5 @@
  ~     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  -->

-<GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:columnCount="3"/>
+<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/app/src/main/res/drawable-hdpi/ic_account_group.png
+++ b/app/src/main/res/drawable-hdpi/ic_account_group.png
--- a/app/src/main/res/drawable-hdpi/ic_account_star.png
+++ b/app/src/main/res/drawable-hdpi/ic_account_star.png
--- a/app/src/main/res/drawable-hdpi/ic_book_open.png
+++ b/app/src/main/res/drawable-hdpi/ic_book_open.png
--- a/app/src/main/res/drawable-hdpi/ic_brush.png
+++ b/app/src/main/res/drawable-hdpi/ic_brush.png
--- a/app/src/main/res/drawable-hdpi/ic_expand.png
+++ b/app/src/main/res/drawable-hdpi/ic_expand.png
--- a/Show More
+++ b/Show More
				`@@ -1 +0,0 @@`
				`[{"outputType":{"type":"APK"},"apkData":{"type":"MAIN","splits":[],"versionCode":31,"versionName":"4.2","enabled":true,"outputFile":"app-release.apk","fullName":"release","baseName":"release"},"path":"app-release.apk","properties":{}}]`