Merge remote-tracking branch 'origin/master'

Fixed images not loading

.github/workflows/watchdiff.yml

@@ -0,0 +1,23 @@
+# This is a basic workflow that is manually triggered
+
+name: Watch hitomi.la file changes
+
+on:
+  schedule:
+    - cron: "*/10 * * * *"
+
+jobs:
+  watchdiff:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          ref: watchdiff
+      - name: Download files
+        run: ./fetch.sh
+      - name: Commit and Push
+        id: push
+        run: |
+            git config --global user.name 'Watchdiff bot'
+            git config --global user.email 'tom5079@naver.com'
+            { git add . && git commit -m "File update" && git push; } | tail -1 | grep -q "nothing to commit"

.gitignore

@@ -1,33 +1,20 @@
-# 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
-.idea/
-misc.xml
-deploymentTargetDropDown.xml
-render.experimental.xml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
 
-# Keystore files
-*.jks
-*.keystore
+#Github pages
+/gh-pages
 
-# Google Services (e.g. APIs or Firebase)
-google-services.json
-
-# Android Profiling
-*.hprof
+#Private files
+**/google-services.json
+**/credentials.json

.idea/codeStyles/Project.xml

@@ -0,0 +1,139 @@
+<component name="ProjectCodeStyleConfiguration">
+  <code_scheme name="Project" version="173">
+    <option name="RIGHT_MARGIN" value="120" />
+    <JetCodeStyleSettings>
+      <option name="PACKAGES_TO_USE_STAR_IMPORTS">
+        <value>
+          <package name="java.util" alias="false" withSubpackages="false" />
+          <package name="kotlinx.android.synthetic" alias="false" withSubpackages="true" />
+          <package name="io.ktor" alias="false" withSubpackages="true" />
+        </value>
+      </option>
+      <option name="PACKAGES_IMPORT_LAYOUT">
+        <value>
+          <package name="" alias="false" withSubpackages="true" />
+          <package name="java" alias="false" withSubpackages="true" />
+          <package name="javax" alias="false" withSubpackages="true" />
+          <package name="kotlin" alias="false" withSubpackages="true" />
+          <package name="" alias="true" withSubpackages="true" />
+        </value>
+      </option>
+      <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>

.idea/codeStyles/codeStyleConfig.xml

@@ -0,0 +1,5 @@
+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="USE_PER_PROJECT_SETTINGS" value="true" />
+  </state>
+</component>

.idea/compiler.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="11" />
+  </component>
+</project>

.idea/copyright/GPL.xml

@@ -0,0 +1,6 @@
+<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>

.idea/copyright/profiles_settings.xml

@@ -0,0 +1,7 @@
+<component name="CopyrightManager">
+  <settings>
+    <module2copyright>
+      <element module="Project Files" copyright="GPL" />
+    </module2copyright>
+  </settings>
+</component>

.idea/dictionaries/tom50.xml

@@ -0,0 +1,7 @@
+<component name="ProjectDictionaryState">
+  <dictionary name="tom50">
+    <words>
+      <w>hitomi</w>
+    </words>
+  </dictionary>
+</component>

.idea/encodings.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding" addBOMForNewFiles="with NO BOM" />
+</project>

.idea/gradle.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="GRADLE" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="gradleHome" value="/usr/share/java/gradle" />
+        <option name="gradleJvm" value="11" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>

.idea/inspectionProfiles/Project_Default.xml

@@ -0,0 +1,6 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="AndroidLintNewerVersionAvailable" enabled="true" level="WARNING" enabled_by_default="true" />
+  </profile>
+</component>

.idea/jarRepositories.xml

@@ -0,0 +1,90 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="maven2" />
+      <option name="name" value="maven2" />
+      <option name="url" value="http://guardian.github.com/maven/repo-releases" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="BintrayJCenter" />
+      <option name="name" value="BintrayJCenter" />
+      <option name="url" value="https://jcenter.bintray.com/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="maven" />
+      <option name="name" value="maven" />
+      <option name="url" value="https://jitpack.io" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="Google" />
+      <option name="name" value="Google" />
+      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenRepo" />
+      <option name="name" value="MavenRepo" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="maven2" />
+      <option name="name" value="maven2" />
+      <option name="url" value="https://guardian.github.com/maven/repo-releases" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="maven3" />
+      <option name="name" value="maven3" />
+      <option name="url" value="https://s3.amazonaws.com/fabric-artifacts-private/internal-snapshots" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="maven4" />
+      <option name="name" value="maven4" />
+      <option name="url" value="https://maven.fabric.io/public" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenLocal" />
+      <option name="name" value="MavenLocal" />
+      <option name="url" value="file:/$USER_HOME$/.m2/repository/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenLocal" />
+      <option name="name" value="MavenLocal" />
+      <option name="url" value="file:/$USER_HOME$/.m2/repository" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="maven3" />
+      <option name="name" value="maven3" />
+      <option name="url" value="https://dl.bintray.com/tom5079/maven" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="maven3" />
+      <option name="name" value="maven3" />
+      <option name="url" value="http://dl.bintray.com/piasy/maven" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="maven2" />
+      <option name="name" value="maven2" />
+      <option name="url" value="https://guardian.github.io/maven/repo-releases/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenLocal" />
+      <option name="name" value="MavenLocal" />
+      <option name="url" value="file:$USER_HOME$/.m2/repository/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="maven2" />
+      <option name="name" value="maven2" />
+      <option name="url" value="https://oss.sonatype.org/content/repositories/snapshots" />
+    </remote-repository>
+  </component>
+</project>

.idea/kotlinCodeInsightSettings.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="KotlinCodeInsightWorkspaceSettings">
+    <option name="addUnambiguousImportsOnTheFly" value="true" />
+    <option name="optimizeImportsOnTheFly" value="true" />
+  </component>
+</project>

.idea/kotlinc.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Kotlin2JvmCompilerArguments">
+    <option name="jvmTarget" value="1.8" />
+  </component>
+</project>

.idea/misc.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DesignSurface">
+    <option name="filePathToZoomLevelMap">
+      <map>
+        <entry key="app/src/main/res/layout/reader_activity.xml" value="0.14351851851851852" />
+      </map>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" 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>

.idea/scopes/Pupil.xml

@@ -0,0 +1,3 @@
+<component name="DependencyValidationManager">
+  <scope name="Pupil" pattern="file[app]:*/" />
+</component>

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>

README.md

@@ -2,7 +2,7 @@
 *Pupil, Hitomi.la viewer for Android*  
 
 ![](https://img.shields.io/github/downloads/tom5079/Pupil/total)  
-[![](https://img.shields.io/github/downloads/tom5079/Pupil/5.1.6-hotfix7/Pupil-v5.1.6-hotfix7.apk?color=%234fc3f7&label=DOWNLOAD%20APP&style=for-the-badge)](https://github.com/tom5079/Pupil/releases/download/5.1.6-hotfix7/Pupil-v5.1.6-hotfix7.apk)  
+[![](https://img.shields.io/github/downloads/tom5079/Pupil/5.2.17/Pupil-v5.2.17.apk?color=%234fc3f7&label=DOWNLOAD%20APP&style=for-the-badge)](https://github.com/tom5079/Pupil/releases/download/5.2.17/Pupil-v5.2.17.apk)  
 [![](https://discordapp.com/api/guilds/610452916612104194/embed.png?style=banner2)](https://discord.gg/Stj4b5v)
 
 # Features
@@ -20,7 +20,7 @@ or Build app yourself
 
 # Contribution
 
-Any kind of contribution is appriciated. Feel free to leave PR!
+Any kind of contribution is appreciated. Feel free to leave PR!
 
 ## Tag Translation
 Head over to [tags branch](https://github.com/tom5079/Pupil/tree/tags)

app/build.gradle

@@ -0,0 +1,142 @@
+apply plugin: "com.android.application"
+apply plugin: "kotlin-android"
+apply plugin: "kotlin-kapt"
+apply plugin: "kotlin-parcelize"
+apply plugin: "kotlinx-serialization"
+apply plugin: "com.google.android.gms.oss-licenses-plugin"
+
+if (file("google-services.json").exists()) {
+    logger.lifecycle("Firebase Enabled")
+    apply plugin: "com.google.gms.google-services"
+    apply plugin: "com.google.firebase.crashlytics"
+    apply plugin: "com.google.firebase.firebase-perf"
+} else {
+    logger.lifecycle("Firebase Disabled")
+}
+
+ext {
+    okhttp_version = "3.12.12"
+}
+
+configurations {
+    all {
+        resolutionStrategy {
+            eachDependency { DependencyResolveDetails details ->
+                if (details.requested.group == "com.squareup.okhttp3" && details.requested.name == "okhttp") {
+                    // OkHttp drops support before 5.0 since 3.13.0
+                    details.useVersion okhttp_version
+                }
+            }
+        }
+    }
+}
+
+android {
+    compileSdkVersion 31
+    defaultConfig {
+        applicationId "xyz.quaver.pupil"
+        minSdkVersion 16
+        targetSdkVersion 31
+        versionCode 69
+        versionName "5.2.18"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        vectorDrawables.useSupportLibrary = true
+    }
+    buildTypes {
+        debug {
+            defaultConfig.minSdkVersion 21
+
+            minifyEnabled false
+            shrinkResources false
+
+            debuggable true
+            applicationIdSuffix ".debug"
+            versionNameSuffix "-DEBUG"
+
+            ext.enableCrashlytics = false
+            ext.alwaysUpdateBuildId = false
+        }
+        release {
+            minifyEnabled true
+            shrinkResources true
+
+            proguardFiles getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro"
+        }
+    }
+    buildFeatures {
+        viewBinding true
+    }
+    kotlinOptions {
+        jvmTarget = JavaVersion.VERSION_1_8.toString()
+        freeCompilerArgs += "-Xuse-experimental=kotlin.Experimental"
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: "libs", include: ["*.jar", "*.aar"])
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.6.0"
+    implementation "org.jetbrains.kotlinx:kotlinx-serialization-json:1.3.2"
+    
+    implementation "androidx.appcompat:appcompat:1.4.0"
+    implementation "androidx.activity:activity-ktx:1.4.0"
+    implementation "androidx.fragment:fragment-ktx:1.4.0"
+    implementation "androidx.preference:preference-ktx:1.1.1"
+    implementation "androidx.recyclerview:recyclerview:1.2.1"
+    implementation "androidx.constraintlayout:constraintlayout:2.1.2"
+    implementation "androidx.gridlayout:gridlayout:1.0.0"
+    implementation "androidx.biometric:biometric:1.1.0"
+    implementation "androidx.work:work-runtime-ktx:2.7.1"
+
+    implementation "com.daimajia.swipelayout:library:1.2.0@aar"
+
+    implementation "com.google.android.material:material:1.4.0"
+
+    implementation platform('com.google.firebase:firebase-bom:29.0.3')
+    implementation "com.google.firebase:firebase-analytics-ktx"
+    implementation "com.google.firebase:firebase-crashlytics-ktx"
+    implementation "com.google.firebase:firebase-perf-ktx"
+
+    implementation "com.google.android.gms:play-services-oss-licenses:17.0.0"
+    implementation "com.google.android.gms:play-services-mlkit-face-detection:16.2.1"
+
+    implementation "com.github.clans:fab:1.6.4"
+
+    //implementation "com.quiph.ui:recyclerviewfastscroller:0.2.1"
+
+    implementation 'com.github.piasy:BigImageViewer:1.8.1'
+    implementation 'com.github.piasy:FrescoImageLoader:1.8.1'
+    implementation 'com.github.piasy:FrescoImageViewFactory:1.8.1'
+    implementation 'com.facebook.fresco:imagepipeline-okhttp3:2.6.0'
+
+    //noinspection GradleDependency
+    implementation "com.squareup.okhttp3:okhttp:$okhttp_version"
+
+    implementation "com.tbuonomo.andrui:viewpagerdotsindicator:4.1.2"
+
+    implementation "net.rdrei.android.dirchooser:library:3.2@aar"
+    implementation "com.gu:option:1.3"
+
+    implementation "com.andrognito.patternlockview:patternlockview:1.0.0"
+    //implementation "com.andrognito.pinlockview:pinlockview:2.1.0"
+
+    implementation "ru.noties.markwon:core:3.1.0"
+
+    implementation "org.jsoup:jsoup:1.14.3"
+
+    implementation "com.google.guava:guava:31.0.1-android"
+
+    implementation "xyz.quaver:documentfilex:0.7.2"
+    implementation "xyz.quaver:floatingsearchview:1.1.7"
+
+    testImplementation "junit:junit:4.13.2"
+    testImplementation "org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.0"
+    androidTestImplementation "androidx.test.ext:junit:1.1.3"
+    androidTestImplementation "androidx.test:rules:1.4.0"
+    androidTestImplementation "androidx.test:runner:1.4.0"
+    androidTestImplementation "androidx.test.espresso:espresso-core:3.4.0"
+}

app/build.gradle.kts

@@ -1,183 +0,0 @@
-import com.google.protobuf.gradle.*
-
-plugins {
-    id("com.android.application")
-    kotlin("android")
-    kotlin("kapt")
-    id("kotlin-parcelize")
-    id("kotlinx-serialization")
-    id("com.google.android.gms.oss-licenses-plugin")
-    id("com.google.gms.google-services")
-    id("com.google.firebase.crashlytics")
-    id("com.google.firebase.firebase-perf")
-    id("com.google.protobuf")
-}
-
-android {
-    compileSdk = 33
-
-    signingConfigs {
-        create("release") {
-            storeFile = File(System.getenv("SIGNING_STORE_FILE"))
-            storePassword = System.getenv("SIGNING_STORE_PASSWORD")
-            keyAlias = System.getenv("SIGNING_KEY_ALIAS")
-            keyPassword = System.getenv("SIGNING_KEY_PASSWORD")
-        }
-    }
-
-    defaultConfig {
-        applicationId = "xyz.quaver.pupil"
-        minSdk = 21
-        targetSdk = 33
-        versionCode = 600
-        versionName = VERSION
-        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
-    }
-
-    buildTypes {
-        getByName("debug") {
-            isDebuggable = true
-            applicationIdSuffix = ".debug"
-            versionNameSuffix = "-DEBUG"
-
-            proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
-
-            extra.set("enableCrashlytics", false)
-            extra.set("alwaysUpdateBuildId", false)
-        }
-        getByName("release") {
-            isMinifyEnabled = false
-            applicationIdSuffix = ".beta"
-
-            isCrunchPngs = false
-
-            proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
-
-            signingConfig = signingConfigs.getByName("release")
-        }
-    }
-
-    buildFeatures {
-        compose = true
-    }
-
-    composeOptions {
-        kotlinCompilerExtensionVersion = Versions.JETPACK_COMPOSE
-    }
-
-    compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_8
-        targetCompatibility = JavaVersion.VERSION_1_8
-    }
-
-    kotlinOptions {
-        jvmTarget = "1.8"
-        freeCompilerArgs += "-Xopt-in=kotlin.RequiresOptIn"
-    }
-
-    packagingOptions {
-        resources.excludes.addAll(
-            listOf(
-                "META-INF/AL2.0",
-                "META-INF/LGPL2.1"
-            )
-        )
-    }
-    namespace = "xyz.quaver.pupil"
-}
-
-dependencies {
-    implementation(fileTree(mapOf("dir" to "libs", "include" to listOf("*.aar"))))
-    implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8")
-    implementation(Kotlin.SERIALIZATION)
-    implementation(Kotlin.COROUTINE)
-
-    implementation("androidx.activity:activity-compose:1.6.1")
-    implementation("androidx.navigation:navigation-compose:2.5.3")
-
-    implementation(JetpackCompose.FOUNDATION)
-    implementation(JetpackCompose.UI)
-    implementation(JetpackCompose.UI_UTIL)
-    implementation(JetpackCompose.UI_TOOLING)
-    implementation(JetpackCompose.ANIMATION)
-    implementation(JetpackCompose.MATERIAL)
-    implementation(JetpackCompose.MATERIAL_ICONS)
-    implementation(JetpackCompose.RUNTIME_LIVEDATA)
-
-//    implementation(JetpackCompose.MARKDOWN)
-
-    implementation(Accompanist.INSETS)
-    implementation(Accompanist.INSETS_UI)
-    implementation(Accompanist.FLOW_LAYOUT)
-    implementation(Accompanist.SYSTEM_UI_CONTROLLER)
-    implementation(Accompanist.DRAWABLE_PAINTER)
-    implementation(Accompanist.APPCOMPAT_THEME)
-
-    implementation("io.coil-kt:coil-compose:2.0.0-rc03")
-
-    implementation(KtorClient.CORE)
-    implementation(KtorClient.OKHTTP)
-    implementation(KtorClient.CONTENT_NEGOTIATION)
-    implementation(KtorClient.SERIALIZATION)
-
-    implementation("androidx.room:room-runtime:2.4.3")
-    annotationProcessor("androidx.room:room-compiler:2.4.3")
-    kapt("androidx.room:room-compiler:2.4.3")
-    implementation("androidx.room:room-ktx:2.4.3")
-
-    implementation("androidx.datastore:datastore:1.0.0")
-    implementation("androidx.datastore:datastore-preferences:1.0.0")
-
-    implementation("org.kodein.di:kodein-di-framework-compose:7.11.0")
-
-    implementation(platform("com.google.firebase:firebase-bom:29.0.3"))
-    implementation("com.google.firebase:firebase-analytics-ktx")
-    implementation("com.google.firebase:firebase-crashlytics-ktx")
-    implementation("com.google.firebase:firebase-perf-ktx")
-
-    implementation("com.google.protobuf:protobuf-javalite:3.19.1")
-
-    implementation("com.google.android.gms:play-services-oss-licenses:17.0.0")
-
-    implementation("org.jsoup:jsoup:1.14.3")
-
-    implementation("xyz.quaver.pupil.sources:core:0.0.1-alpha01-DEV29")
-
-    implementation("xyz.quaver:documentfilex:0.7.2")
-    implementation("xyz.quaver:subsampledimage:0.0.1-alpha22-SNAPSHOT")
-
-    implementation("org.kodein.log:kodein-log:0.12.0")
-    debugImplementation("com.squareup.leakcanary:leakcanary-android:2.8.1")
-
-    testImplementation("junit:junit:4.13.2")
-    testImplementation("org.mockito:mockito-inline:4.4.0")
-    testImplementation(KtorClient.TEST)
-    testImplementation(Kotlin.COROUTINE_TEST)
-
-    androidTestImplementation("androidx.test.ext:junit:1.1.3")
-    androidTestImplementation("androidx.test:rules:1.4.0")
-    androidTestImplementation("androidx.test:runner:1.4.0")
-    androidTestImplementation("androidx.test.espresso:espresso-core:3.4.0")
-    androidTestImplementation(KtorClient.TEST)
-
-    androidTestImplementation("androidx.compose.ui:ui-test-junit4:1.1.1")
-}
-
-protobuf {
-    protoc {
-        artifact = "com.google.protobuf:protoc:3.19.1"
-    }
-    generateProtoTasks {
-        all().forEach { task ->
-            task.builtins {
-                id("java") {
-                    option("lite")
-                }
-            }
-        }
-    }
-}
-
-task<Exec>("clearAppCache") {
-    commandLine("adb", "shell", "pm", "clear", "xyz.quaver.pupil.debug")
-}

app/credentials.json

@@ -1 +0,0 @@
-{"installed":{"client_id":"644157827114-rnbcmlqiaqgg295o45kavchnvi3dedbo.apps.googleusercontent.com","project_id":"pupil-1598439316578","auth_uri":"https://accounts.google.com/o/oauth2/auth","token_uri":"https://oauth2.googleapis.com/token","auth_provider_x509_cert_url":"https://www.googleapis.com/oauth2/v1/certs","redirect_uris":["urn:ietf:wg:oauth:2.0:oob","http://localhost"]}}

app/proguard-rules.pro

@@ -1,6 +1,6 @@
 # Add project specific ProGuard rules here.
 # You can control the set of applied configuration files using the
-# proguardFiles setting in build.gradle.kts.
+# proguardFiles setting in build.gradle.
 #
 # For more details, see
 #   http://developer.android.com/guide/developing/tools/proguard.html
@@ -23,23 +23,14 @@
 -dontobfuscate
 
 -keepattributes *Annotation*, InnerClasses
--dontnote kotlinx.serialization.AnnotationsKt # core serialization annotations
-
-# kotlinx-serialization-json specific. Add this if you have java.lang.NoClassDefFoundError kotlinx.serialization.json.JsonObjectSerializer
--keepclassmembers class kotlinx.serialization.json.** {
+-dontnote kotlinx.serialization.SerializationKt
+-keep,includedescriptorclasses class xyz.quaver.**$$serializer { *; } # <-- change package name to your app's
+-keepclassmembers class xyz.quaver.pupil.** { # <-- change package name to your app's
     *** Companion;
 }
--keepclasseswithmembers class kotlinx.serialization.json.** {
+-keepclasseswithmembers class xyz.quaver.pupil.** { # <-- change package name to your app's
     kotlinx.serialization.KSerializer serializer(...);
 }
-
--keep,includedescriptorclasses class xyz.quaver.**$$serializer { *; }
--keepclassmembers class xyz.quaver.** {
-    *** Companion;
-}
--keepclasseswithmembers class xyz.quaver.** {
-    kotlinx.serialization.KSerializer serializer(...);
-}
--keepclassmembers class * extends androidx.datastore.preferences.protobuf.GeneratedMessageLite {
-    <fields>;
-}
+-keep class xyz.quaver.pupil.ui.fragment.ManageFavoritesFragment
+-keep class xyz.quaver.pupil.ui.fragment.ManageStorageFragment
+-keep class xyz.quaver.pupil.** { *; }

app/release/output-metadata.json

@@ -4,15 +4,15 @@
     "type": "APK",
     "kind": "Directory"
   },
-  "applicationId": "xyz.quaver.pupil.beta",
+  "applicationId": "xyz.quaver.pupil",
   "variantName": "release",
   "elements": [
     {
       "type": "SINGLE",
       "filters": [],
       "attributes": [],
-      "versionCode": 600,
-      "versionName": "6.0.0-alpha02",
+      "versionCode": 69,
+      "versionName": "5.2.18",
       "outputFile": "app-release.apk"
     }
   ],

app/src/androidTest/java/xyz/quaver/pupil/ExampleInstrumentedTest.kt

@@ -20,20 +20,18 @@
 
 package xyz.quaver.pupil
 
+import android.os.Build
 import android.util.Log
+import android.webkit.*
+import android.widget.Toast
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.platform.app.InstrumentationRegistry
-import com.google.api.Http
-import io.ktor.client.*
-import io.ktor.client.call.*
-import io.ktor.client.engine.okhttp.*
-import io.ktor.client.request.*
-import io.ktor.client.statement.*
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.runBlocking
-import kotlinx.coroutines.withContext
+import com.google.firebase.crashlytics.FirebaseCrashlytics
+import kotlinx.coroutines.*
+import org.junit.Before
 import org.junit.Test
 import org.junit.runner.RunWith
+import xyz.quaver.pupil.hitomi.*
 
 /**
  * Instrumented test, which will execute on an Android device.
@@ -42,10 +40,81 @@ import org.junit.runner.RunWith
  */
 @RunWith(AndroidJUnit4::class)
 class ExampleInstrumentedTest {
+    @Before
+    fun init() {
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+
+        runBlocking {
+            withContext(Dispatchers.Main) {
+                initWebView(appContext)
+            }
+        }
+    }
 
     @Test
-    fun useAppContext() {
-        // Context of the app under test.
-        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+    fun test_getGalleryIDsFromNozomi() {
+        runBlocking {
+            val result = getGalleryIDsFromNozomi(null, "boten", "all")
+
+            Log.d("PUPILD", "getGalleryIDsFromNozomi: ${result.size}")
+        }
+    }
+
+    @Test
+    fun test_getGalleryIDsForQuery() {
+        runBlocking {
+            val result = getGalleryIDsForQuery("female:crotch tattoo")
+
+            Log.d("PUPILD", "getGalleryIDsForQuery: ${result.size}")
+        }
+    }
+
+    @Test
+    fun test_getSuggestionsForQuery() {
+        runBlocking {
+            val result = getSuggestionsForQuery("fem")
+
+            Log.d("PUPILD", "getSuggestionsForQuery: ${result.size}")
+        }
+    }
+
+    @Test
+    fun test_urlFromUrlFromHash() {
+        runBlocking {
+            val galleryInfo = getGalleryInfo(2102416)
+
+            val result = galleryInfo.files.map {
+                imageUrlFromImage(2102416, it, false)
+            }
+
+            Log.d("PUPILD", result.toString())
+        }
+    }
+
+    @Test
+    fun test_getGalleryInfo() {
+        runBlocking {
+            val galleryInfo = getGalleryInfo(2102416)
+
+            Log.d("PUPILD", galleryInfo.toString())
+        }
+    }
+
+    @Test
+    fun test_getGallery() {
+        runBlocking {
+            val gallery = getGallery(2109479)
+
+            Log.d("PUPILD", gallery.toString())
+        }
+    }
+
+    @Test
+    fun test_getGalleryBlock() {
+        runBlocking {
+            val block = getGalleryBlock(2013877)
+
+            Log.d("PUPILD", block.toString())
+        }
     }
 }

app/src/main/AndroidManifest.xml

@@ -1,15 +1,19 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools">
+    xmlns:tools="http://schemas.android.com/tools"
+    package="xyz.quaver.pupil">
 
     <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="21"/>
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" android:maxSdkVersion="21"/>
+    <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.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.CAMERA" />
     <uses-permission android:name="android.permission.VIBRATE"/>
-    <uses-permission android:name="android.permission.QUERY_ALL_PACKAGES" tools:ignore="QueryAllPackagesPermission" />
 
+    <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"
@@ -21,12 +25,15 @@
         android:supportsRtl="true"
         android:theme="@style/AppTheme"
         android:networkSecurityConfig="@xml/network_security_config"
-        android:windowSoftInputMode="adjustResize"
         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">
@@ -34,14 +41,191 @@
             <meta-data
                 android:name="android.support.FILE_PROVIDER_PATHS"
                 android:resource="@xml/file_paths" />
+
         </provider>
 
+        <service android:name=".services.DownloadService"
+            android:exported="false"/>
+
+        <receiver
+            android:name=".receiver.UpdateBroadcastReceiver"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.DOWNLOAD_COMPLETE" />
+            </intent-filter>
+        </receiver>
+
+        <activity android:name=".ui.LockActivity" />
+        <activity
+            android:name=".ui.ReaderActivity"
+            android:configChanges="keyboardHidden|orientation|screenSize"
+            android:parentActivityName=".ui.MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <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" />
+            </intent-filter>
+            <intent-filter>
+                <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="/manga"
+                    android:scheme="http" />
+            </intent-filter>
+            <intent-filter>
+                <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="/doujinshi"
+                    android:scheme="http" />
+            </intent-filter>
+            <intent-filter>
+                <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="/cg"
+                    android:scheme="http" />
+            </intent-filter>
+            <intent-filter>
+                <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="/reader"
+                    android:scheme="http" />
+            </intent-filter>
+            <intent-filter>
+                <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" />
+            </intent-filter>
+            <intent-filter>
+                <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="/manga"
+                    android:scheme="https" />
+            </intent-filter>
+            <intent-filter>
+                <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="/doujinshi"
+                    android:scheme="https" />
+            </intent-filter>
+            <intent-filter>
+                <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="/cg"
+                    android:scheme="https" />
+            </intent-filter>
+            <intent-filter>
+                <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="/reader"
+                    android:scheme="https" />
+            </intent-filter>
+            <intent-filter>
+                <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" />
+            </intent-filter>
+            <intent-filter>
+                <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" />
+            </intent-filter>
+            <intent-filter>
+                <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" />
+            </intent-filter>
+            <intent-filter>
+                <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" />
+            </intent-filter>
+        </activity>
+        <activity
+            android:name=".ui.SettingsActivity"
+            android:label="@string/settings_title">
+            <tools:validation testUrl="http://ix.io/eer" />
+        </activity>
         <activity
             android:name=".ui.MainActivity"
             android:configChanges="keyboardHidden|orientation|screenSize"
             android:theme="@style/NoActionBarAppTheme"
-            android:exported="true"
-            android:windowSoftInputMode="adjustResize">
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <action android:name="android.intent.action.VIEW" />
@@ -50,8 +234,17 @@
             </intent-filter>
             <intent-filter>
                 <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"
+                    android:host="ix.io"
+                    android:pathPattern="/..*" />
             </intent-filter>
         </activity>
+        <activity android:name="net.rdrei.android.dirchooser.DirectoryChooserActivity" />
     </application>
 
 </manifest>

app/src/main/java/xyz/quaver/pupil/Pupil.kt

@@ -18,39 +18,270 @@
 
 package xyz.quaver.pupil
 
+import android.annotation.SuppressLint
 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.webkit.*
+import android.widget.Toast
+import androidx.appcompat.app.AppCompatDelegate
+import androidx.core.content.ContextCompat
+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 io.ktor.client.*
-import io.ktor.client.engine.okhttp.*
-import io.ktor.client.plugins.contentnegotiation.*
-import io.ktor.serialization.kotlinx.json.*
-import org.kodein.di.*
-import org.kodein.di.android.x.androidXModule
-import xyz.quaver.pupil.sources.core.NetworkCache
-import xyz.quaver.pupil.sources.core.settingsDataStore
-import xyz.quaver.pupil.util.PupilHttpClient
+import com.google.firebase.crashlytics.FirebaseCrashlytics
+import kotlinx.coroutines.*
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.asSharedFlow
+import okhttp3.*
+import xyz.quaver.io.FileX
+import xyz.quaver.pupil.hitomi.evaluationContext
+import xyz.quaver.pupil.types.Tag
+import xyz.quaver.pupil.util.*
+import java.io.File
+import java.net.URL
+import java.util.*
+import java.util.concurrent.Executors
+import java.util.concurrent.TimeUnit
+import kotlin.reflect.KClass
 
-class Pupil : Application(), DIAware {
+typealias PupilInterceptor = (Interceptor.Chain) -> Response
 
-    override val di: DI by DI.lazy {
-        import(androidXModule(this@Pupil))
+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
 
-        bind { singleton { NetworkCache(this@Pupil) } }
+val interceptors = mutableMapOf<KClass<out Any>, PupilInterceptor>()
 
-        bindSingleton { settingsDataStore }
+lateinit var clientBuilder: OkHttpClient.Builder
 
-        bind { singleton { PupilHttpClient(OkHttp.create()) } }
+var clientHolder: OkHttpClient? = null
+val client: OkHttpClient
+    get() = clientHolder ?: clientBuilder.build().also {
+        clientHolder = it
     }
 
+@SuppressLint("StaticFieldLeak")
+lateinit var webView: WebView
+val _webViewFlow = MutableSharedFlow<Pair<String, String?>>()
+val webViewFlow = _webViewFlow.asSharedFlow()
+var webViewReady = false
+var webViewFailed = false
+private var reloadJob: Job? = null
+
+fun reloadWebView() {
+    if (reloadJob?.isActive == true) return
+
+    reloadJob = CoroutineScope(Dispatchers.IO).launch {
+        webViewReady = false
+        webViewFailed = false
+
+        evaluationContext.cancelChildren(CancellationException("reload"))
+
+        runCatching {
+            URL(
+                if (BuildConfig.DEBUG)
+                    "https://tom5079.github.io/Pupil/hitomi-dev.html"
+                else
+                    "https://tom5079.github.io/Pupil/hitomi.html"
+            ).readText()
+        }.onFailure {
+            webViewFailed = true
+        }.getOrNull()?.let { html ->
+            launch(Dispatchers.Main) {
+                webView.loadDataWithBaseURL(
+                    "https://hitomi.la/",
+                    html,
+                    "text/html",
+                    null,
+                    null
+                )
+            }
+        }
+    }
+}
+
+private var htmlVersion: String = ""
+fun reloadWhenFailedOrUpdate() = CoroutineScope(Dispatchers.Default).launch {
+    while (true) {
+        if (
+            webViewFailed ||
+            runCatching {
+                URL(
+                    if (BuildConfig.DEBUG)
+                        "https://tom5079.github.io/Pupil/hitomi-dev.html.ver"
+                    else
+                        "https://tom5079.github.io/Pupil/hitomi.html.ver"
+                ).readText()
+            }.getOrNull().let { version ->
+                (!version.isNullOrEmpty() && version != htmlVersion).also {
+                    if (it) htmlVersion = version!!
+                }
+            }
+        ) {
+            reloadWebView()
+        }
+
+        delay(if (webViewReady && !webViewFailed) 10000 else 1000)
+    }
+}
+
+@SuppressLint("SetJavaScriptEnabled")
+fun initWebView(context: Context) {
+    if (BuildConfig.DEBUG) WebView.setWebContentsDebuggingEnabled(true)
+
+    webView = WebView(context).apply {
+        with (settings) {
+            javaScriptEnabled = true
+            domStorageEnabled = true
+        }
+
+        userAgent = settings.userAgentString
+
+        webViewClient = object: WebViewClient() {
+            override fun onPageFinished(view: WebView?, url: String?) {
+                webViewReady = true
+            }
+
+            override fun onReceivedError(
+                view: WebView?,
+                request: WebResourceRequest?,
+                error: WebResourceError?
+            ) {
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+                    FirebaseCrashlytics.getInstance().log(
+                        "onReceivedError: ${error?.description}"
+                    )
+                }
+            }
+        }
+
+        webChromeClient = object: WebChromeClient() {
+            override fun onConsoleMessage(consoleMessage: ConsoleMessage?): Boolean {
+                FirebaseCrashlytics.getInstance().log(
+                    "onConsoleMessage: ${consoleMessage?.message()} (${consoleMessage?.sourceId()}:${consoleMessage?.lineNumber()})"
+                )
+
+                return super.onConsoleMessage(consoleMessage)
+            }
+        }
+
+        addJavascriptInterface(object {
+            @JavascriptInterface
+            fun onResult(uid: String, result: String) {
+                CoroutineScope(Dispatchers.Unconfined).launch {
+                    _webViewFlow.emit(uid to result)
+                }
+            }
+            @JavascriptInterface
+            fun onError(uid: String, message: String) {
+                CoroutineScope(Dispatchers.Unconfined).launch {
+                    _webViewFlow.emit(uid to null)
+                }
+                FirebaseCrashlytics.getInstance().log(
+                    "onError: $message"
+                )
+            }
+        }, "Callback")
+    }
+
+    reloadWhenFailedOrUpdate()
+}
+
+lateinit var userAgent: String
+
+class Pupil : Application() {
+
+    companion object {
+        lateinit var instance: Pupil
+            private set
+    }
+
+    @SuppressLint("SetJavaScriptEnabled")
     override fun onCreate() {
-        super.onCreate()
+        instance = this
+
+        initWebView(this)
+
+        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
+        }
+
+        FirebaseCrashlytics.getInstance().setUserId(userID)
+
+        val proxyInfo = getProxyInfo()
+
+        clientBuilder = OkHttpClient.Builder()
+            .connectTimeout(0, TimeUnit.SECONDS)
+            .readTimeout(0, TimeUnit.SECONDS)
+            .proxyInfo(proxyInfo)
+            .addInterceptor { chain ->
+                val request = chain.request().newBuilder()
+                    .header("User-Agent", userAgent)
+                    .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)
@@ -60,6 +291,15 @@ class Pupil : Application(), DIAware {
             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
 
@@ -83,6 +323,21 @@ class Pupil : Application(), DIAware {
                 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
+            })
         }
+
+        AppCompatDelegate.setDefaultNightMode(when (Preferences.get<Boolean>("dark_mode")) {
+            true -> AppCompatDelegate.MODE_NIGHT_YES
+            false -> AppCompatDelegate.MODE_NIGHT_NO
+        })
+
+        super.onCreate()
     }
+
 }

app/src/main/java/xyz/quaver/pupil/adapters/GalleryBlockAdapter.kt

@@ -0,0 +1,323 @@
+/*
+ *     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.adapters
+
+import android.content.ClipData
+import android.content.ClipboardManager
+import android.content.Context
+import android.graphics.drawable.Drawable
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+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.daimajia.swipe.SwipeLayout
+import com.daimajia.swipe.adapters.RecyclerSwipeAdapter
+import com.daimajia.swipe.interfaces.SwipeAdapterInterface
+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.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
+
+class GalleryBlockAdapter(private val galleries: List<Int>) : RecyclerSwipeAdapter<RecyclerView.ViewHolder>(), SwipeAdapterInterface {
+
+    var updateAll = true
+    var thin: Boolean = Preferences["thin"]
+
+    inner class GalleryViewHolder(val binding: GalleryblockItemBinding) : RecyclerView.ViewHolder(binding.root) {
+        private var galleryID: Int = 0
+
+        init {
+            CoroutineScope(Dispatchers.Main).launch {
+                while (updateAll) {
+                    updateProgress(itemView.context)
+                    delay(1000)
+                }
+            }
+        }
+
+        private fun updateProgress(context: Context) = CoroutineScope(Dispatchers.Main).launch {
+            with(binding.galleryblockCard) {
+                val imageList = Cache.getInstance(context, galleryID).metadata.imageList
+
+                if (imageList == null) {
+                    max = 0
+                    return@with
+                }
+
+                progress = imageList.count { it != null }
+                max = imageList.size
+
+                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])
+                        }
+                    }.toMap()
+
+                    val artists = galleryBlock.artists
+                    val series = galleryBlock.series
+
+                    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)
+                            }
+
+                            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)
+                            } }
+                        }
+                    }
+
+                    binding.galleryblockTitle.text = galleryBlock.title
+                    with(binding.galleryblockArtist) {
+                        text = artists.joinToString { it.wordCapitalize() }
+                        visibility = when {
+                            artists.isNotEmpty() -> View.VISIBLE
+                            else -> View.GONE
+                        }
+
+                        CoroutineScope(Dispatchers.IO).launch {
+                            val gallery = runCatching {
+                                getGallery(galleryID)
+                            }.getOrNull()
+
+                            if (gallery?.groups?.isNotEmpty() != true)
+                                return@launch
+
+                            launch(Dispatchers.Main) {
+                                text = context.getString(
+                                    R.string.galleryblock_artist_with_group,
+                                    artists.joinToString { it.wordCapitalize() },
+                                    gallery.groups.joinToString { it.wordCapitalize() }
+                                )
+                            }
+                        }
+                    }
+                    with(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.isNotEmpty() -> 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
+                                        }
+                                }.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()
+                                    })
+                                }
+                            }
+                        }
+                    }
+
+
+                }
+            }
+
+            // Make some views invisible to make it thinner
+            if (thin) {
+                binding.galleryblockTagGroup.visibility = View.GONE
+            }
+        }
+    }
+
+    val onChipClickedHandler = ArrayList<((Tag) -> Unit)>()
+    var onDownloadClickedHandler: ((Int) -> Unit)? = null
+    var onDeleteClickedHandler: ((Int) -> Unit)? = null
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
+        return GalleryViewHolder(GalleryblockItemBinding.inflate(LayoutInflater.from(parent.context), parent, false))
+    }
+
+    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
+        if (holder is GalleryViewHolder) {
+            val galleryID = galleries[position]
+
+            holder.bind(galleryID)
+
+            holder.binding.galleryblockCard.binding.download.setOnClickListener {
+                onDownloadClickedHandler?.invoke(position)
+            }
+
+            holder.binding.galleryblockCard.binding.delete.setOnClickListener {
+                onDeleteClickedHandler?.invoke(position)
+            }
+
+            mItemManger.bindView(holder.binding.root, position)
+
+            holder.binding.galleryblockCard.binding.swipeLayout.addSwipeListener(object: SwipeLayout.SwipeListener {
+                override fun onStartOpen(layout: SwipeLayout?) {
+                    mItemManger.closeAllExcept(layout)
+
+                    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?) {}
+                override fun onHandRelease(layout: SwipeLayout?, xvel: Float, yvel: Float) {}
+                override fun onOpen(layout: SwipeLayout?) {}
+                override fun onStartClose(layout: SwipeLayout?) {}
+                override fun onUpdate(layout: SwipeLayout?, leftOffset: Int, topOffset: Int) {}
+            })
+        }
+    }
+
+    override fun getItemCount() = galleries.size
+
+    override fun getSwipeLayoutResourceId(position: Int) = R.id.swipe_layout
+}

app/src/main/java/xyz/quaver/pupil/adapters/ReaderAdapter.kt

@@ -0,0 +1,250 @@
+/*
+ *     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.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.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.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 activity: ReaderActivity,
+    private val galleryID: Int
+) : RecyclerView.Adapter<ReaderAdapter.ViewHolder>() {
+    var galleryInfo: GalleryInfo? = null
+
+    var isFullScreen = false
+
+    var onItemClickListener : (() -> (Unit))? = null
+
+    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 onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        return ViewHolder(ReaderItemBinding.inflate(LayoutInflater.from(parent.context), parent, false))
+    }
+
+    private var cache: Cache? = null
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        holder.bind(position)
+    }
+
+    override fun getItemCount() = galleryInfo?.files?.size ?: 0
+
+    override fun onViewRecycled(holder: ViewHolder) {
+        holder.clear()
+    }
+
+}
+
+class FrescoImageViewFactory : ImageViewFactory() {
+    var updateView: ((ImageInfo) -> Unit)? = null
+
+    override fun createAnimatedImageView(
+        context: Context, imageType: Int,
+        initScaleType: Int
+    ): View {
+        val view = SimpleDraweeView(context)
+        view.hierarchy.actualImageScaleType = scaleType(initScaleType)
+        return view
+    }
+
+    override fun loadAnimatedContent(
+        view: View, imageType: Int,
+        imageFile: File
+    ) {
+        if (view is SimpleDraweeView) {
+            val controller: DraweeController = Fresco.newDraweeControllerBuilder()
+                .setUri(Uri.parse("file://" + imageFile.absolutePath))
+                .setAutoPlayAnimations(true)
+                .setControllerListener(object: BaseControllerListener<ImageInfo>() {
+                    override fun onIntermediateImageSet(id: String?, imageInfo: ImageInfo?) {
+                        imageInfo?.let { updateView?.invoke(it) }
+                    }
+
+                    override fun onFinalImageSet(id: String?, imageInfo: ImageInfo?, animatable: Animatable?) {
+                        imageInfo?.let { updateView?.invoke(it) }
+                    }
+                })
+                .build()
+            view.controller = controller
+        }
+    }
+
+    override fun createThumbnailView(
+        context: Context,
+        scaleType: ImageView.ScaleType, willLoadFromNetwork: Boolean
+    ): View {
+        return if (willLoadFromNetwork) {
+            val thumbnailView = SimpleDraweeView(context)
+            thumbnailView.hierarchy.actualImageScaleType = scaleType(scaleType)
+            thumbnailView
+        } else {
+            super.createThumbnailView(context, scaleType, false)
+        }
+    }
+
+    override fun loadThumbnailContent(view: View, thumbnail: Uri) {
+        if (view is SimpleDraweeView) {
+            val controller: DraweeController = Fresco.newDraweeControllerBuilder()
+                .setUri(thumbnail)
+                .build()
+            view.controller = controller
+        }
+    }
+
+    private fun scaleType(value: Int): ScalingUtils.ScaleType {
+        return when (value) {
+            BigImageView.INIT_SCALE_TYPE_CENTER -> ScalingUtils.ScaleType.CENTER
+            BigImageView.INIT_SCALE_TYPE_CENTER_CROP -> ScalingUtils.ScaleType.CENTER_CROP
+            BigImageView.INIT_SCALE_TYPE_CENTER_INSIDE -> ScalingUtils.ScaleType.CENTER_INSIDE
+            BigImageView.INIT_SCALE_TYPE_FIT_END -> ScalingUtils.ScaleType.FIT_END
+            BigImageView.INIT_SCALE_TYPE_FIT_START -> ScalingUtils.ScaleType.FIT_START
+            BigImageView.INIT_SCALE_TYPE_FIT_XY -> ScalingUtils.ScaleType.FIT_XY
+            BigImageView.INIT_SCALE_TYPE_FIT_CENTER -> ScalingUtils.ScaleType.FIT_CENTER
+            else -> ScalingUtils.ScaleType.FIT_CENTER
+        }
+    }
+
+    private fun scaleType(scaleType: ImageView.ScaleType): ScalingUtils.ScaleType {
+        return when (scaleType) {
+            ImageView.ScaleType.CENTER -> ScalingUtils.ScaleType.CENTER
+            ImageView.ScaleType.CENTER_CROP -> ScalingUtils.ScaleType.CENTER_CROP
+            ImageView.ScaleType.CENTER_INSIDE -> ScalingUtils.ScaleType.CENTER_INSIDE
+            ImageView.ScaleType.FIT_END -> ScalingUtils.ScaleType.FIT_END
+            ImageView.ScaleType.FIT_START -> ScalingUtils.ScaleType.FIT_START
+            ImageView.ScaleType.FIT_XY -> ScalingUtils.ScaleType.FIT_XY
+            ImageView.ScaleType.FIT_CENTER -> ScalingUtils.ScaleType.FIT_CENTER
+            else -> ScalingUtils.ScaleType.FIT_CENTER
+        }
+    }
+}

app/src/main/java/xyz/quaver/pupil/adapters/ThumbnailAdapter.kt

@@ -0,0 +1,52 @@
+/*
+ *     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.adapters
+
+import android.net.Uri
+import android.view.ViewGroup
+import androidx.core.content.ContextCompat
+import androidx.recyclerview.widget.RecyclerView
+import com.github.piasy.biv.view.BigImageView
+import xyz.quaver.pupil.R
+
+class ThumbnailAdapter(var thumbnails: List<String>) : RecyclerView.Adapter<ThumbnailAdapter.ViewHolder>() {
+
+    class ViewHolder(val view: BigImageView) : RecyclerView.ViewHolder(view) {
+        fun clear() {
+            view.ssiv?.recycle()
+        }
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        return ViewHolder(BigImageView(parent.context).apply {
+            setFailureImage(ContextCompat.getDrawable(context, R.drawable.image_broken_variant))
+        })
+    }
+
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        holder.view.showImage(Uri.parse(thumbnails[position]))
+    }
+
+    override fun getItemCount() = thumbnails.size
+
+    override fun onViewRecycled(holder: ViewHolder) {
+        holder.clear()
+    }
+
+}

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
+
+}

app/src/main/java/xyz/quaver/pupil/hitomi/Utils.kt

@@ -0,0 +1,46 @@
+/*
+ *    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
+
+import kotlinx.serialization.json.Json
+import okhttp3.Request
+import xyz.quaver.pupil.client
+import java.io.IOException
+import java.net.URL
+
+/**
+ * kotlinx.serialization.json.Json object for global use  
+ * properties should not be changed
+ *
+ * @see [https://kotlin.github.io/kotlinx.serialization/kotlinx-serialization-core/kotlinx-serialization-core/kotlinx.serialization.json/-json/index.html]
+ */
+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() }.body()?.use { it.string() } ?: throw IOException()
+}

app/src/main/java/xyz/quaver/pupil/hitomi/common.kt

@@ -0,0 +1,142 @@
+/*
+ *    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 android.util.Log
+import android.webkit.WebView
+import android.widget.Toast
+import com.google.common.collect.ConcurrentHashMultiset
+import com.google.firebase.crashlytics.FirebaseCrashlytics
+import kotlinx.coroutines.*
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.flow.transformWhile
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.Json
+import xyz.quaver.json
+import xyz.quaver.pupil.*
+import java.util.*
+import java.util.concurrent.ConcurrentHashMap
+import kotlin.coroutines.resume
+import kotlin.coroutines.suspendCoroutine
+
+const val protocol = "https:"
+
+val evaluationContext = Dispatchers.Main + Job()
+
+suspend fun WebView.evaluate(script: String): String = coroutineScope {
+    var result: String? = null
+
+    while (result == null) {
+        try {
+            result = withContext(evaluationContext) {
+                while (webViewFailed || !webViewReady) yield()
+
+                suspendCoroutine { continuation ->
+                    evaluateJavascript(script) {
+                        continuation.resume(it)
+                    }
+                }
+
+            }
+        } catch (e: CancellationException) {
+            if (e.message != "reload") result = "null"
+        }
+    }
+
+    result
+}
+
+@OptIn(ExperimentalCoroutinesApi::class)
+suspend fun WebView.evaluatePromise(
+    script: String,
+    then: String = ".then(result => Callback.onResult(%uid, JSON.stringify(result))).catch(err => Callback.onError(%uid, JSON.stringify(err)))"
+): String = coroutineScope {
+    var result: String? = null
+
+    while (result == null) {
+        try {
+            result = withContext(evaluationContext) {
+                while (webViewFailed || !webViewReady) yield()
+
+                val uid = UUID.randomUUID().toString()
+
+                val flow: Flow<Pair<String, String?>> = webViewFlow.transformWhile { (currentUid, result) ->
+                    if (currentUid == uid) {
+                        emit(currentUid to result)
+                    }
+                    currentUid != uid
+                }
+
+                launch {
+                    evaluateJavascript((script + then).replace("%uid", "'$uid'"), null)
+                }
+
+                flow.first().second
+            }
+        } catch (e: CancellationException) {
+            if (e.message != "reload") result = "null"
+        }
+    }
+
+    result
+}
+
+@Suppress("EXPERIMENTAL_API_USAGE")
+suspend fun getGalleryInfo(galleryID: Int): GalleryInfo {
+    val result = webView.evaluatePromise("get_gallery_info($galleryID)")
+
+    return json.decodeFromString(result)
+}
+
+//common.js
+const val domain = "ltn.hitomi.la"
+const val galleryblockdir = "galleryblock"
+const val nozomiextension = ".nozomi"
+
+val String?.js: String
+    get() = if (this == null) "null" else "'$this'"
+
+@OptIn(ExperimentalSerializationApi::class)
+suspend fun urlFromUrlFromHash(galleryID: Int, image: GalleryFiles, dir: String? = null, ext: String? = null, base: String? = null): String {
+    val result = webView.evaluate(
+        """
+        url_from_url_from_hash(
+            ${galleryID.toString().js},
+            ${Json.encodeToString(image)},
+            ${dir.js}, ${ext.js}, ${base.js}
+        )
+        """.trimIndent()
+    )
+
+    return Json.decodeFromString(result)
+}
+
+suspend fun imageUrlFromImage(galleryID: Int, image: GalleryFiles, noWebp: Boolean) : String {
+    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)
+    }
+}

app/src/main/java/xyz/quaver/pupil/hitomi/galleries.kt

@@ -0,0 +1,47 @@
+/*
+ *    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 kotlinx.serialization.decodeFromString
+import kotlinx.serialization.json.Json
+import org.jsoup.Jsoup
+import xyz.quaver.pupil.webView
+import xyz.quaver.readText
+import java.net.URL
+import java.net.URLDecoder
+
+@Serializable
+data class Gallery(
+    val related: List<Int>,
+    val langList: Map<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 result = webView.evaluatePromise("get_gallery($galleryID)")
+    return Json.decodeFromString(result)
+}

app/src/main/java/xyz/quaver/pupil/hitomi/galleryblock.kt

@@ -0,0 +1,48 @@
+/*
+ *    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 kotlinx.serialization.decodeFromString
+import kotlinx.serialization.json.Json
+import org.jsoup.Jsoup
+import xyz.quaver.pupil.webView
+import xyz.quaver.readText
+import java.net.URL
+import java.net.URLDecoder
+import java.nio.ByteBuffer
+import java.nio.ByteOrder
+import java.util.*
+import javax.net.ssl.HttpsURLConnection
+
+@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>
+)
+
+suspend fun getGalleryBlock(galleryID: Int) : GalleryBlock {
+    val result = webView.evaluatePromise("get_gallery_block($galleryID)")
+    return Json.decodeFromString(result)
+}

app/src/main/java/xyz/quaver/pupil/hitomi/reader.kt

@@ -0,0 +1,49 @@
+/*
+ *    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
+
+fun getReferer(galleryID: Int) = "https://hitomi.la/reader/$galleryID.html"
+
+@Serializable
+data class GalleryInfo(
+    val language_localname: String? = null,
+    val language: String? = null,
+    val date: String? = null,
+    val files: List<GalleryFiles>,
+    val id: Int? = null,
+    val type: String? = null,
+    val title: String? = null
+)
+
+@Serializable
+data class GalleryFiles(
+    val width: Int,
+    val hash: String,
+    val haswebp: Int = 0,
+    val name: String,
+    val height: Int,
+    val hasavif: Int = 0,
+    val hasavifsmalltn: Int? = 0
+)
+
+//Set header `Referer` to reader url to avoid 403 error
+@Deprecated("", replaceWith = ReplaceWith("getGalleryInfo"))
+suspend fun getReader(galleryID: Int) : GalleryInfo {
+   return getGalleryInfo(galleryID)
+}

app/src/main/java/xyz/quaver/pupil/hitomi/results.kt

@@ -0,0 +1,87 @@
+/*
+ *    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.*
+
+suspend fun doSearch(query: String, sortByPopularity: Boolean = false) : Set<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.matches(Regex("^-.+")))
+            negativeTerms.push(term.replace(Regex("^-"), ""))
+        else if (term.isNotBlank())
+            positiveTerms.push(term)
+    }
+
+    val positiveResults = positiveTerms.map {
+        async {
+            runCatching {
+                getGalleryIDsForQuery(it)
+            }.getOrElse { emptySet() }
+        }
+    }
+
+    val negativeResults = negativeTerms.mapIndexed { index, it ->
+        async {
+            runCatching {
+                getGalleryIDsForQuery(it)
+            }.getOrElse { emptySet() }
+        }
+    }
+
+    val results = when {
+        sortByPopularity -> getGalleryIDsFromNozomi(null, "popular", "all")
+        positiveTerms.isEmpty() -> getGalleryIDsFromNozomi(null, "index", "all")
+        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.forEachIndexed { index, it ->
+        filterNegative(it.await())
+    }
+
+    results
+}

app/src/main/java/xyz/quaver/pupil/hitomi/search.kt

@@ -0,0 +1,65 @@
+/*
+ *    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 android.util.Log
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.json.Json
+import xyz.quaver.pupil.webView
+
+//searchlib.js
+const val extension = ".html"
+
+@OptIn(ExperimentalSerializationApi::class)
+suspend fun getGalleryIDsForQuery(query: String) : Set<Int> {
+    val result = webView.evaluatePromise("get_galleryids_for_query('$query')")
+
+    return Json.decodeFromString(result)
+}
+
+@Serializable
+data class Suggestion(val s: String, val t: Int, val u: String, val n: String)
+
+@OptIn(ExperimentalSerializationApi::class)
+suspend fun getSuggestionsForQuery(query: String) : List<Suggestion> {
+    val result = webView.evaluatePromise(
+        "get_suggestions_for_query('$query', ++search_serial)",
+        then = """
+            .then(r => {
+                let [results, results_serial] = r;
+                if (search_serial !== results_serial) {
+                    Callback.onResult(%uid, '[]');
+                } else {
+                    Callback.onResult(%uid, JSON.stringify(results));
+                }
+            });
+        """.trimIndent()
+    )
+
+    return Json.decodeFromString(result) ?: return emptyList()
+}
+
+@OptIn(ExperimentalSerializationApi::class)
+suspend fun getGalleryIDsFromNozomi(area: String?, tag: String, language: String) : Set<Int> {
+    val jsArea = if (area == null) "null" else "'$area'"
+
+    val json = webView.evaluatePromise("""get_galleryids_from_nozomi($jsArea, '$tag', '$language')""")
+
+    return Json.decodeFromString(json)
+}

app/src/main/java/xyz/quaver/pupil/receiver/UpdateBroadcastReceiver.kt

@@ -0,0 +1,94 @@
+/*
+ *     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" ->
+                                    FileProvider.getUriForFile(context, context.applicationContext.packageName + ".provider", File(uri.path!!)
+                                    )
+                                "content" -> uri
+                                else -> null
+                            }
+                        }
+                    } else
+                        null
+                } ?: return
+
+                // Build Notification
+
+                val notificationManager = NotificationManagerCompat.from(context)
+
+                val pendingIntent = PendingIntent.getActivity(context, 0, 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)
+            }
+        }
+    }
+
+}

app/src/main/java/xyz/quaver/pupil/services/DownloadService.kt

@@ -0,0 +1,435 @@
+/*
+ *     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.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.common.util.concurrent.RateLimiter
+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")
+    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 (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 rateLimiter = RateLimiter.create(2.0)
+    private val rateLimitHost = Regex("..?\\.hitomi.la")
+
+    private val interceptor: PupilInterceptor = { chain ->
+        val request = chain.request()
+
+        var response = chain.proceed(request)
+        var limit = 5
+
+        while (!response.isSuccessful) {
+            if (response.code() == 503) {
+                Thread.sleep(200)
+            } else if (--limit > 0)
+                break
+
+            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) {
+            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 {
+                    response.also {
+                        if (it.code() != 200) throw IOException(
+                            "$galleryID $index ${response.request().url()} CODE ${it.code()}"
+                        )
+                    }.body()?.use {
+                        val padding = ceil(progress[galleryID]?.size?.let { log10(it.toFloat()) } ?: 0F).toInt()
+
+                        Cache.getInstance(this@DownloadService, galleryID)
+                            .putImage(index, "${index.toString().padStart(padding, '0')}.$ext", it.byteStream())
+
+                        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) }
+                        }
+                    } ?: throw Exception("Response null")
+                }.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(30))
+        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 {
+        startForeground(R.id.downloader_notification_id, serviceNotification.build())
+
+        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() {
+        startForeground(R.id.downloader_notification_id, serviceNotification.build())
+        interceptors[Tag::class] = interceptor
+    }
+
+    override fun onDestroy() {
+        interceptors.remove(Tag::class)
+    }
+}

app/src/main/java/xyz/quaver/pupil/sources/LocalSources.kt

@@ -1,108 +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.sources
-
-import android.app.Application
-import android.content.Context
-import android.content.pm.PackageInfo
-import android.content.pm.PackageManager
-import androidx.compose.runtime.*
-import androidx.compose.ui.platform.LocalContext
-import dalvik.system.PathClassLoader
-import kotlinx.coroutines.coroutineScope
-import kotlinx.coroutines.delay
-import kotlinx.coroutines.sync.Mutex
-import kotlinx.coroutines.sync.withLock
-import xyz.quaver.pupil.sources.core.Source
-
-@Composable
-fun rememberLocalSourceList(context: Context = LocalContext.current): State<List<SourceEntry>> = produceState(emptyList()) {
-    while (true) {
-        value = loadSourceList(context)
-        delay(1000)
-    }
-}
-
-suspend fun loadSource(context: Context, sourceEntry: SourceEntry): Source = coroutineScope {
-    sourceCacheMutex.withLock {
-        sourceCache[sourceEntry.packageName] ?: run {
-            val classLoader = PathClassLoader(sourceEntry.sourceDir, null, context.classLoader)
-
-            Class.forName("${sourceEntry.packagePath}${sourceEntry.sourcePath}", false, classLoader)
-                .getConstructor(Application::class.java)
-                .newInstance(context.applicationContext) as Source
-        }.also { sourceCache[sourceEntry.packageName] = it }
-    }
-}
-
-private const val SOURCES_FEATURE = "pupil.sources"
-private const val SOURCES_PACKAGE_PREFIX = "xyz.quaver.pupil.sources"
-private const val SOURCES_PATH = "pupil.sources.path"
-
-private val PackageInfo.isSourceFeatureEnabled
-    get() = this.reqFeatures.orEmpty().any { it.name == SOURCES_FEATURE }
-
-private fun loadSource(context: Context, packageInfo: PackageInfo): List<SourceEntry> {
-    val packageManager = context.packageManager
-
-    val applicationInfo = packageInfo.applicationInfo
-
-    val packageName = packageManager.getApplicationLabel(applicationInfo).toString().substringAfter("[Pupil] ")
-    val packagePath = packageInfo.packageName
-
-    val icon = packageManager.getApplicationIcon(applicationInfo)
-
-    val version = packageInfo.versionName
-
-    return packageInfo
-        .applicationInfo
-        .metaData
-        ?.getString(SOURCES_PATH)
-        ?.split(';')
-        ?.map { source ->
-            val (sourceName, sourcePath) = source.split(':', limit = 2)
-            SourceEntry(
-                packageName,
-                packagePath,
-                sourceName,
-                sourcePath,
-                applicationInfo.sourceDir,
-                icon,
-                version
-            )
-        }.orEmpty()
-}
-
-private val sourceCacheMutex = Mutex()
-private val sourceCache = mutableMapOf<String, Source>()
-
-private fun loadSourceList(context: Context): List<SourceEntry> {
-    val packageManager = context.packageManager
-
-    val packages = packageManager.getInstalledPackages(
-        PackageManager.GET_CONFIGURATIONS or PackageManager.GET_META_DATA
-    )
-
-    return packages.flatMap { packageInfo ->
-        if (packageInfo.isSourceFeatureEnabled)
-            loadSource(context, packageInfo)
-        else
-            emptyList()
-    }
-}

app/src/main/java/xyz/quaver/pupil/sources/RemoteSources.kt

@@ -1,36 +0,0 @@
-/*
- *     Pupil, Hitomi.la viewer for Android
- *     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
- *     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.sources
-
-import androidx.compose.runtime.*
-import kotlinx.coroutines.delay
-import org.kodein.di.compose.localDI
-import org.kodein.di.compose.rememberInstance
-import org.kodein.di.direct
-import org.kodein.di.instance
-import xyz.quaver.pupil.util.PupilHttpClient
-import xyz.quaver.pupil.util.RemoteSourceInfo
-
-@Composable
-fun rememberRemoteSourceList(client: PupilHttpClient = localDI().direct.instance()) = produceState<Map<String, RemoteSourceInfo>?>(null) {
-    while (true) {
-        value = client.getRemoteSourceList()
-        delay(1000)
-    }
-}

app/src/main/java/xyz/quaver/pupil/sources/common.kt

@@ -1,31 +0,0 @@
-/*
- *     Pupil, Hitomi.la viewer for Android
- *     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
- *     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.sources
-
-import android.graphics.drawable.Drawable
-
-data class SourceEntry(
-    val packageName: String,
-    val packagePath: String,
-    val sourceName: String,
-    val sourcePath: String,
-    val sourceDir: String,
-    val icon: Drawable,
-    val version: String
-)

app/src/main/java/xyz/quaver/pupil/types/SendLogException.kt

@@ -1,6 +1,6 @@
 /*
  *     Pupil, Hitomi.la viewer for Android
- *     Copyright (C) 2021 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
@@ -13,14 +13,9 @@
  *     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 <https://www.gnu.org/licenses/>.
+ *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-plugins {
-    `kotlin-dsl`
-}
+package xyz.quaver.pupil.types
 
-repositories {
-    mavenCentral()
-    google()
-}
+class SendLogException : Exception()

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

app/src/main/java/xyz/quaver/pupil/types/Tags.kt

@@ -0,0 +1,111 @@
+/*
+ *     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.serialization.Serializable
+
+@Serializable
+data class Tag(val area: String?, val tag: String, val isNegative: Boolean = false) {
+    companion object {
+        fun parse(tag: String) : Tag {
+            if (tag.firstOrNull() == '-') {
+                tag.substring(1).split(Regex(":"), 2).let {
+                    return when(it.size) {
+                        2 -> Tag(it[0], it[1], true)
+                        else -> Tag(null, tag, true)
+                    }
+                }
+            }
+            tag.split(Regex(":"), 2).let {
+                return when(it.size) {
+                    2 -> Tag(it[0], it[1])
+                    else -> Tag(null, tag)
+                }
+            }
+        }
+    }
+
+    override fun toString(): String {
+        return (if (isNegative) "-" else "") + when(area) {
+            null -> tag
+            else -> "$area:$tag"
+        }
+    }
+
+    fun toQuery(): String {
+        return toString().replace(' ', '_')
+    }
+
+    override fun equals(other: Any?): Boolean {
+        if (other !is Tag)
+            return false
+
+        if (other.area == area && other.tag == tag)
+            return true
+
+        return false
+    }
+
+    override fun hashCode() = toString().hashCode()
+}
+
+class Tags(val tags: MutableSet<Tag> = mutableSetOf()) : MutableSet<Tag> by tags {
+
+    companion object {
+        fun parse(tags: String) : Tags {
+            return Tags(
+                tags.split(' ').map {
+                    if (it.isNotEmpty())
+                        Tag.parse(it)
+                    else
+                        null
+                }.filterNotNull().toMutableSet()
+            )
+        }
+    }
+
+    fun contains(element: String): Boolean {
+        tags.forEach {
+            if (it.toString() == element)
+                return true
+        }
+
+        return false
+    }
+
+    fun add(element: String): Boolean {
+        return tags.add(Tag.parse(element))
+    }
+
+    fun remove(element: String) {
+        tags.filter { it.toString() == element }.forEach {
+            tags.remove(it)
+        }
+    }
+
+    fun removeByArea(area: String, isNegative: Boolean? = null) {
+        tags.filter { it.area == area && (if(isNegative == null) true else (it.isNegative == isNegative)) }.forEach {
+            tags.remove(it)
+        }
+    }
+
+    override fun toString(): String {
+        return tags.joinToString(" ") { it.toString() }
+    }
+}

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))
+    }
+
+}

app/src/main/java/xyz/quaver/pupil/ui/LockActivity.kt

@@ -0,0 +1,280 @@
+/*
+ *     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.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 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)
+        binding = LockActivityBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        lockManager = try {
+            LockManager(this)
+        } catch (e: Exception) {
+            AlertDialog.Builder(this).apply {
+                setTitle(R.string.warning)
+                setMessage(R.string.lock_corrupted)
+                setPositiveButton(android.R.string.ok) { _, _ ->
+                    finish()
+                }
+            }.show()
+            return
+        }
+
+        mode = intent.getStringExtra("mode")
+        val force = intent.getBooleanExtra("force", false)
+
+        when(mode) {
+            null -> {
+                if (lockManager.isEmpty()) {
+                    setResult(RESULT_OK)
+                    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()
+                    }
+                }
+            }
+        }
+    }
+
+}

app/src/main/java/xyz/quaver/pupil/ui/MainActivity.kt

@@ -18,100 +18,819 @@
 
 package xyz.quaver.pupil.ui
 
+import android.annotation.SuppressLint
+import android.content.Intent
+import android.net.Uri
+import android.os.Build
 import android.os.Bundle
-import androidx.activity.ComponentActivity
-import androidx.activity.compose.BackHandler
-import androidx.activity.compose.setContent
-import androidx.compose.animation.Crossfade
-import androidx.compose.material.MaterialTheme
-import androidx.compose.runtime.*
-import androidx.compose.ui.graphics.Color
-import androidx.core.view.WindowCompat
-import androidx.navigation.compose.NavHost
-import androidx.navigation.compose.composable
-import androidx.navigation.compose.rememberNavController
-import com.google.accompanist.insets.ProvideWindowInsets
-import com.google.accompanist.systemuicontroller.rememberSystemUiController
-import kotlinx.coroutines.launch
-import org.kodein.di.*
-import org.kodein.di.android.closestDI
-import org.kodein.di.android.subDI
-import org.kodein.di.compose.rememberInstance
-import xyz.quaver.pupil.BuildConfig
-import xyz.quaver.pupil.sources.core.Source
-import xyz.quaver.pupil.sources.core.util.LocalActivity
-import xyz.quaver.pupil.sources.loadSource
-import xyz.quaver.pupil.ui.theme.PupilTheme
-import xyz.quaver.pupil.util.PupilHttpClient
-import xyz.quaver.pupil.util.Release
+import android.text.InputType
+import android.text.util.Linkify
+import android.util.Log
+import android.view.KeyEvent
+import android.view.MenuItem
+import android.view.View
+import android.view.animation.DecelerateInterpolator
+import android.widget.EditText
+import android.widget.TextView
+import androidx.appcompat.app.AlertDialog
+import androidx.core.content.ContextCompat
+import androidx.core.view.GravityCompat
+import androidx.core.view.ViewCompat
+import androidx.recyclerview.widget.RecyclerView
+import com.google.android.material.navigation.NavigationView
+import com.google.android.material.snackbar.Snackbar
+import com.google.firebase.crashlytics.FirebaseCrashlytics
+import kotlinx.coroutines.*
+import xyz.quaver.floatingsearchview.FloatingSearchView
+import xyz.quaver.floatingsearchview.suggestions.model.SearchSuggestion
+import xyz.quaver.floatingsearchview.util.view.MenuView
+import xyz.quaver.floatingsearchview.util.view.SearchInputView
+import xyz.quaver.pupil.hitomi.doSearch
+import xyz.quaver.pupil.hitomi.getGalleryIDsFromNozomi
+import xyz.quaver.pupil.hitomi.getSuggestionsForQuery
+import xyz.quaver.pupil.*
+import xyz.quaver.pupil.adapters.GalleryBlockAdapter
+import xyz.quaver.pupil.databinding.MainActivityBinding
+import xyz.quaver.pupil.services.DownloadService
+import xyz.quaver.pupil.types.*
+import xyz.quaver.pupil.ui.dialog.DownloadLocationDialogFragment
+import xyz.quaver.pupil.ui.dialog.GalleryDialog
+import xyz.quaver.pupil.ui.view.MainView
+import xyz.quaver.pupil.ui.view.ProgressCard
+import xyz.quaver.pupil.util.ItemClickSupport
+import xyz.quaver.pupil.util.Preferences
+import xyz.quaver.pupil.util.checkUpdate
+import xyz.quaver.pupil.util.downloader.Cache
+import xyz.quaver.pupil.util.downloader.DownloadManager
+import xyz.quaver.pupil.util.restore
+import java.util.regex.Pattern
+import kotlin.math.*
 
-class MainActivity : ComponentActivity(), DIAware {
-    override val di by closestDI()
+class MainActivity :
+    BaseActivity(),
+    NavigationView.OnNavigationItemSelectedListener
+{
+
+    enum class Mode {
+        SEARCH,
+        HISTORY,
+        DOWNLOAD,
+        FAVORITE
+    }
+
+    enum class SortMode {
+        NEWEST,
+        POPULAR
+    }
+
+    private val galleries = ArrayList<Int>()
+
+    private var query = ""
+    set(value) {
+        field = value
+        with(findViewById<SearchInputView>(R.id.search_bar_text)) {
+            if (text.toString() != value)
+                setText(query, TextView.BufferType.EDITABLE)
+        }
+    }
+    private var queryStack = mutableListOf<String>()
+
+    private var mode = Mode.SEARCH
+    private var sortMode = SortMode.NEWEST
+
+    private var galleryIDs: Deferred<List<Int>>? = null
+    private var totalItems = 0
+    private var loadingJob: Job? = null
+    private var currentPage = 0
+
+    private lateinit var binding: MainActivityBinding
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+        binding = MainActivityBinding.inflate(layoutInflater)
+        setContentView(binding.root)
 
-        WindowCompat.setDecorFitsSystemWindows(window, false)
-
-        setContent {
-            PupilTheme {
-                ProvideWindowInsets(windowInsetsAnimationsEnabled = true) {
-                    val navController = rememberNavController()
-
-                    val systemUiController = rememberSystemUiController()
-                    val useDarkIcons = MaterialTheme.colors.isLight
-
-                    val coroutineScope = rememberCoroutineScope()
-
-                    val client: PupilHttpClient by rememberInstance()
-
-                    val latestRelease by produceState<Release?>(null) {
-                        value = null //client.latestRelease()
+        if (intent.action == Intent.ACTION_VIEW) {
+            intent.dataString?.let { url ->
+                restore(url,
+                    onFailure = {
+                        Snackbar.make(binding.contents.recyclerview, R.string.settings_backup_failed, Snackbar.LENGTH_LONG).show()
+                    }, onSuccess = {
+                        Snackbar.make(binding.contents.recyclerview, getString(R.string.settings_restore_success, it.size), Snackbar.LENGTH_LONG).show()
                     }
-
-                    var dismissUpdate by remember { mutableStateOf(false) }
-
-                    SideEffect {
-                        systemUiController.setSystemBarsColor(
-                            color = Color.Transparent,
-                            darkIcons = useDarkIcons
                 )
             }
-
-                    latestRelease?.let { release ->
-                        UpdateAlertDialog(
-                            show = !dismissUpdate && release.version != BuildConfig.VERSION_NAME,
-                            release = release,
-                            onDismiss = { dismissUpdate = true }
-                        )
         }
 
-                    NavHost(navController, "main") {
-                        composable("main") {
-                            var source by remember { mutableStateOf<Source?>(null) }
+        if (Preferences["download_folder", ""].isEmpty())
+            DownloadLocationDialogFragment().show(supportFragmentManager, "Download Location Dialog")
 
-                            BackHandler(
-                                enabled = source != null
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R &&
+            !Preferences["download_folder_ignore_warning", false] &&
+            ContextCompat.getExternalFilesDirs(this, null).filterNotNull().map { Uri.fromFile(it).toString() }
+                .contains(Preferences["download_folder", ""])
         ) {
-                                source = null
+            AlertDialog.Builder(this)
+                .setTitle(R.string.warning)
+                .setMessage(R.string.unaccessible_download_folder)
+                .setPositiveButton(android.R.string.ok) { _, _ ->
+                    DownloadLocationDialogFragment().show(supportFragmentManager, "Download Location Dialog")
+                }.setNegativeButton(R.string.ignore) { _, _ ->
+                    Preferences["download_folder_ignore_warning"] = true
+                }.show()
         }
 
-                            Crossfade(source) { _source ->
-                                if (_source == null)
-                                    SourceSelector {
-                                        coroutineScope.launch {
-                                            source = loadSource(application, it)
+        initView()
     }
+
+    override fun onResume() {
+        super.onResume()
+
+        checkUpdate(this)
+    }
+
+    @OptIn(ExperimentalStdlibApi::class)
+    override fun onBackPressed() {
+        when {
+            binding.drawer.isDrawerOpen(GravityCompat.START) -> binding.drawer.closeDrawer(GravityCompat.START)
+            queryStack.removeLastOrNull() != null && queryStack.isNotEmpty() -> runOnUiThread {
+                query = queryStack.last()
+
+                cancelFetch()
+                clearGalleries()
+                fetchGalleries(query, sortMode)
+                loadBlocks()
+            }
+            else -> super.onBackPressed()
+        }
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+
+        (binding.contents.recyclerview.adapter as? GalleryBlockAdapter)?.updateAll = false
+    }
+
+    override fun onKeyDown(keyCode: Int, event: KeyEvent?): Boolean {
+        val perPage = Preferences["per_page", "25"].toInt()
+        val maxPage = ceil(totalItems / perPage.toDouble()).roundToInt()
+
+        return when(keyCode) {
+            KeyEvent.KEYCODE_VOLUME_UP -> {
+                if (currentPage > 0) {
+                    runOnUiThread {
+                        currentPage--
+
+                        cancelFetch()
+                        clearGalleries()
+                        fetchGalleries(query, sortMode)
+                        loadBlocks()
+                    }
+                }
+
+                true
+            }
+            KeyEvent.KEYCODE_VOLUME_DOWN -> {
+                if (currentPage < maxPage) {
+                    runOnUiThread {
+                        currentPage++
+
+                        cancelFetch()
+                        clearGalleries()
+                        fetchGalleries(query, sortMode)
+                        loadBlocks()
+                    }
+                }
+
+                true
+            }
+            else -> super.onKeyDown(keyCode, event)
+        }
+    }
+
+    private fun initView() {
+        binding.contents.recyclerview.addOnScrollListener(object: RecyclerView.OnScrollListener() {
+            override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
+                // -height of the search view < translationY < 0
+                binding.contents.searchview.translationY =
+                    min(
+                        max(
+                        binding.contents.searchview.translationY - dy,
+                        -binding.contents.searchview.binding.querySection.root.height.toFloat()
+                    ), 0F)
+
+                if (dy > 0)
+                    binding.contents.fab.hideMenuButton(true)
+                else if (dy < 0)
+                    binding.contents.fab.showMenuButton(true)
+            }
+        })
+
+        Linkify.addLinks(binding.contents.noresult, Pattern.compile(getString(R.string.https_text)), null, null, { _, _ -> getString(R.string.https) })
+
+        //NavigationView
+        binding.navView.setNavigationItemSelectedListener(this)
+
+        with(binding.contents.cancelFab) {
+            setImageResource(R.drawable.cancel)
+            setOnClickListener {
+                DownloadService.cancel(this@MainActivity)
+            }
+        }
+
+        with(binding.contents.jumpFab) {
+            setImageResource(R.drawable.ic_jump)
+            setOnClickListener {
+                val perPage = Preferences["per_page", "25"].toInt()
+                val editText = EditText(context)
+
+                AlertDialog.Builder(context).apply {
+                    setView(editText)
+                    setTitle(R.string.main_jump_title)
+                    setMessage(getString(
+                        R.string.main_jump_message,
+                        currentPage+1,
+                        ceil(totalItems / perPage.toDouble()).roundToInt()
+                    ))
+
+                    setPositiveButton(android.R.string.ok) { _, _ ->
+                        currentPage = (editText.text.toString().toIntOrNull() ?: return@setPositiveButton)-1
+
+                        runOnUiThread {
+                            cancelFetch()
+                            clearGalleries()
+                            loadBlocks()
+                        }
+                    }
+                }.show()
+            }
+        }
+
+        with(binding.contents.randomFab) {
+            setImageResource(R.drawable.shuffle_variant)
+            setOnClickListener {
+                runBlocking {
+                    withTimeoutOrNull(100) {
+                        galleryIDs?.await()
+                    }
+                }.let {
+                    if (it?.isEmpty() == false) {
+                        val galleryID = it.random()
+
+                        GalleryDialog(this@MainActivity, galleryID).apply {
+                            onChipClickedHandler.add {
+                                runOnUiThread {
+                                    query = it.toQuery()
+                                    currentPage = 0
+
+                                    cancelFetch()
+                                    clearGalleries()
+                                    fetchGalleries(query, sortMode)
+                                    loadBlocks()
+                                }
+                                dismiss()
+                            }
+                        }.show()
+                    }
+                }
+            }
+        }
+
+        with(binding.contents.idFab) {
+            setImageResource(R.drawable.numeric)
+            setOnClickListener {
+                val editText = EditText(context).apply {
+                    inputType = InputType.TYPE_CLASS_NUMBER
+                }
+
+                AlertDialog.Builder(context).apply {
+                    setView(editText)
+                    setTitle(R.string.main_open_gallery_by_id)
+
+                    setPositiveButton(android.R.string.ok) { _, _ ->
+                        val galleryID = editText.text.toString().toIntOrNull() ?: return@setPositiveButton
+
+                        GalleryDialog(this@MainActivity, galleryID).apply {
+                            onChipClickedHandler.add {
+                                runOnUiThread {
+                                    query = it.toQuery()
+                                    currentPage = 0
+
+                                    cancelFetch()
+                                    clearGalleries()
+                                    fetchGalleries(query, sortMode)
+                                    loadBlocks()
+                                }
+                                dismiss()
+                            }
+                        }.show()
+                    }
+                }.show()
+            }
+        }
+
+        with(binding.contents.view) {
+            setOnPageTurnListener(object: MainView.OnPageTurnListener {
+                override fun onPrev(page: Int) {
+                    currentPage--
+
+                    // disable pageturn until the contents are loaded
+                    setCurrentPage(1, false)
+
+                    ViewCompat.animate(binding.contents.searchview)
+                        .setDuration(100)
+                        .setInterpolator(DecelerateInterpolator())
+                        .translationY(0F)
+
+                    cancelFetch()
+                    clearGalleries()
+                    fetchGalleries(query, sortMode)
+                    loadBlocks()
+                }
+
+                override fun onNext(page: Int) {
+                    currentPage++
+
+                    // disable pageturn until the contents are loaded
+                    setCurrentPage(1, false)
+
+                    ViewCompat.animate(binding.contents.searchview)
+                        .setDuration(100)
+                        .setInterpolator(DecelerateInterpolator())
+                        .translationY(0F)
+
+                    cancelFetch()
+                    clearGalleries()
+                    fetchGalleries(query, sortMode)
+                    loadBlocks()
+                }
+            })
+        }
+
+        setupSearchBar()
+        setupRecyclerView()
+        fetchGalleries(query, sortMode)
+        loadBlocks()
+    }
+
+    @SuppressLint("ClickableViewAccessibility")
+    private fun setupRecyclerView() {
+        with(binding.contents.recyclerview) {
+            adapter = GalleryBlockAdapter(galleries).apply {
+                onChipClickedHandler.add {
+                    runOnUiThread {
+                        query = it.toQuery()
+                        currentPage = 0
+
+                        cancelFetch()
+                        clearGalleries()
+                        fetchGalleries(query, sortMode)
+                        loadBlocks()
+                    }
+                }
+                onDownloadClickedHandler = { position ->
+                    val galleryID = galleries[position]
+
+                    if (DownloadManager.getInstance(context).isDownloading(galleryID)) {     //download in progress
+                        DownloadService.cancel(this@MainActivity, galleryID)
                     }
                     else {
-                                    CompositionLocalProvider(LocalActivity provides this@MainActivity) {
-                                        _source.Entry()
+                        DownloadManager.getInstance(context).addDownloadFolder(galleryID)
+                        DownloadService.download(this@MainActivity, galleryID)
                     }
-                                }
-                            }
-                        }
-                        composable("settings") {
 
+                    closeAllItems()
+                }
+
+                onDeleteClickedHandler = { position ->
+                    val galleryID = galleries[position]
+                    DownloadService.delete(this@MainActivity, galleryID)
+
+                    histories.remove(galleryID)
+
+                    if (this@MainActivity.mode != Mode.SEARCH)
+                        runOnUiThread {
+                            cancelFetch()
+                            clearGalleries()
+                            fetchGalleries(query, sortMode)
+                            loadBlocks()
+                        }
+
+                    closeAllItems()
+                }
+            }
+            ItemClickSupport.addTo(this).apply {
+                onItemClickListener = listener@{ _, position, v ->
+                    if (v !is ProgressCard)
+                        return@listener
+
+                    val intent = Intent(this@MainActivity, ReaderActivity::class.java)
+                    intent.putExtra("galleryID", galleries[position])
+
+                    //TODO: Maybe sprinkling some transitions will be nice :D
+                    startActivity(intent)
+                }
+
+                onItemLongClickListener = listener@{ _, position, v ->
+                    if (v !is ProgressCard)
+                        return@listener false
+
+                    val galleryID = galleries.getOrNull(position) ?: return@listener true
+
+                    GalleryDialog(this@MainActivity, galleryID).apply {
+                        onChipClickedHandler.add {
+                            runOnUiThread {
+                                query = it.toQuery()
+                                currentPage = 0
+
+                                cancelFetch()
+                                clearGalleries()
+                                fetchGalleries(query, sortMode)
+                                loadBlocks()
+                            }
+                            dismiss()
+                        }
+                    }.show()
+
+                    true
+                }
+            }
+        }
+    }
+
+    private var isFavorite = false
+    private val defaultSuggestions: List<SearchSuggestion>
+        get() = when {
+            isFavorite -> {
+                favoriteTags.map {
+                    TagSuggestion(it.tag, -1, "", it.area ?: "tag")
+                } + FavoriteHistorySwitch(getString(R.string.search_show_histories))
+            }
+            else -> {
+                searchHistory.map {
+                    Suggestion(it)
+                }.takeLast(10) + FavoriteHistorySwitch(getString(R.string.search_show_tags))
+            }
+        }.reversed()
+
+    private var suggestionJob : Job? = null
+    private fun setupSearchBar() {
+        with(binding.contents.searchview) {
+            onMenuStatusChangeListener = object: FloatingSearchView.OnMenuStatusChangeListener {
+                override fun onMenuOpened() {
+                    (this@MainActivity.binding.contents.recyclerview.adapter as GalleryBlockAdapter).closeAllItems()
+                }
+
+                override fun onMenuClosed() {
+                    //Do Nothing
+                }
+            }
+
+            post {
+                findViewById<MenuView>(R.id.menu_view).menuItems.firstOrNull {
+                    (it as MenuItem).itemId == R.id.main_menu_thin
+                }?.let {
+                    (it as MenuItem).isChecked = Preferences["thin"]
+                }
+            }
+
+            onHistoryDeleteClickedListener = {
+                searchHistory.remove(it)
+                swapSuggestions(defaultSuggestions)
+            }
+            onFavoriteHistorySwitchClickListener = {
+                isFavorite = !isFavorite
+                swapSuggestions(defaultSuggestions)
+            }
+
+            onMenuItemClickListener = {
+                onActionMenuItemSelected(it)
+            }
+
+            onQueryChangeListener = lambda@{ _, query ->
+                this@MainActivity.query = query
+
+                suggestionJob?.cancel()
+
+                if (query.isEmpty() or query.endsWith(' ')) {
+                    swapSuggestions(defaultSuggestions)
+
+                    return@lambda
+                }
+
+                swapSuggestions(listOf(LoadingSuggestion(getText(R.string.reader_loading).toString())))
+
+                val currentQuery = query.split(" ").last()
+                    .replace(Regex("^-"), "")
+                    .replace('_', ' ')
+
+                suggestionJob = CoroutineScope(Dispatchers.IO).launch {
+                    val suggestions = kotlin.runCatching {
+                        getSuggestionsForQuery(currentQuery).map { TagSuggestion(it) }.toMutableList()
+                    }.getOrElse { mutableListOf() }
+
+                    suggestions.filter {
+                        val tag = "${it.n}:${it.s.replace(Regex("\\s"), "_")}"
+                        favoriteTags.contains(Tag.parse(tag))
+                    }.reversed().forEach {
+                        suggestions.remove(it)
+                        suggestions.add(0, it)
+                    }
+
+                    withContext(Dispatchers.Main) {
+                        swapSuggestions(if (suggestions.isNotEmpty()) suggestions else listOf(NoResultSuggestion(getText(R.string.main_no_result).toString())))
+                    }
+                }
+            }
+
+            onFocusChangeListener = object: FloatingSearchView.OnFocusChangeListener {
+                override fun onFocus() {
+                    if (query.isEmpty() or query.endsWith(' '))
+                        swapSuggestions(defaultSuggestions)
+                }
+
+                override fun onFocusCleared() {
+                    suggestionJob?.cancel()
+
+                    runOnUiThread {
+                        cancelFetch()
+                        clearGalleries()
+                        currentPage = 0
+                        fetchGalleries(query, sortMode)
+                        loadBlocks()
+                    }
+                }
+            }
+
+            attachNavigationDrawerToMenuButton(this@MainActivity.binding.drawer)
+        }
+    }
+
+    fun onActionMenuItemSelected(item: MenuItem?) {
+        when(item?.itemId) {
+            R.id.main_menu_settings -> startActivity(Intent(this@MainActivity, SettingsActivity::class.java))
+            R.id.main_menu_thin -> {
+                val thin = !item.isChecked
+
+                item.isChecked = thin
+                binding.contents.recyclerview.apply {
+                    (adapter as GalleryBlockAdapter).apply {
+                        this.thin = thin
+
+                        Preferences["thin"] = thin
+                    }
+
+                    adapter = adapter       // Force to redraw
+                }
+            }
+            R.id.main_menu_sort_newest -> {
+                sortMode = SortMode.NEWEST
+                item.isChecked = true
+
+                runOnUiThread {
+                    currentPage = 0
+
+                    cancelFetch()
+                    clearGalleries()
+                    fetchGalleries(query, sortMode)
+                    loadBlocks()
+                }
+            }
+            R.id.main_menu_sort_popular -> {
+                sortMode = SortMode.POPULAR
+                item.isChecked = true
+
+                runOnUiThread {
+                    currentPage = 0
+
+                    cancelFetch()
+                    clearGalleries()
+                    fetchGalleries(query, sortMode)
+                    loadBlocks()
+                }
+            }
+        }
+    }
+
+    override fun onNavigationItemSelected(item: MenuItem): Boolean {
+        runOnUiThread {
+            binding.drawer.closeDrawers()
+
+            when(item.itemId) {
+                R.id.main_drawer_home -> {
+                    cancelFetch()
+                    clearGalleries()
+                    currentPage = 0
+                    query = ""
+                    queryStack.clear()
+                    mode = Mode.SEARCH
+                    fetchGalleries(query, sortMode)
+                    loadBlocks()
+                }
+                R.id.main_drawer_history -> {
+                    cancelFetch()
+                    clearGalleries()
+                    currentPage = 0
+                    query = ""
+                    queryStack.clear()
+                    mode = Mode.HISTORY
+                    fetchGalleries(query, sortMode)
+                    loadBlocks()
+                }
+                R.id.main_drawer_downloads -> {
+                    cancelFetch()
+                    clearGalleries()
+                    currentPage = 0
+                    query = ""
+                    queryStack.clear()
+                    mode = Mode.DOWNLOAD
+                    fetchGalleries(query, sortMode)
+                    loadBlocks()
+                }
+                R.id.main_drawer_favorite -> {
+                    cancelFetch()
+                    clearGalleries()
+                    currentPage = 0
+                    query = ""
+                    queryStack.clear()
+                    mode = Mode.FAVORITE
+                    fetchGalleries(query, sortMode)
+                    loadBlocks()
+                }
+                R.id.main_drawer_help -> {
+                    startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.help))))
+                }
+                R.id.main_drawer_github -> {
+                    startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.github))))
+                }
+                R.id.main_drawer_homepage -> {
+                    startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.home_page))))
+                }
+                R.id.main_drawer_email -> {
+                    startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.email))))
+                }
+                R.id.main_drawer_kakaotalk -> {
+                    startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.discord))))
+                }
+            }
+        }
+
+        return true
+    }
+
+    private fun cancelFetch() {
+        galleryIDs?.cancel()
+        loadingJob?.cancel()
+    }
+
+    private fun clearGalleries() = CoroutineScope(Dispatchers.Main).launch {
+        galleries.clear()
+
+        with(binding.contents.recyclerview.adapter as GalleryBlockAdapter?) {
+            this ?: return@with
+
+            this.notifyDataSetChanged()
+        }
+
+        binding.contents.noresult.visibility = View.INVISIBLE
+        binding.contents.progressbar.show()
+    }
+
+    private fun fetchGalleries(query: String, sortMode: SortMode) {
+        val defaultQuery: String = Preferences["default_query"]
+
+        if (query.isNotBlank())
+            searchHistory.add(query)
+
+        if (query != queryStack.lastOrNull()) {
+            queryStack.remove(query)
+            queryStack.add(query)
+        }
+
+        if (query.isNotEmpty() && mode != Mode.SEARCH) {
+            Snackbar.make(binding.contents.recyclerview, R.string.search_all, Snackbar.LENGTH_SHORT).apply {
+                setAction(android.R.string.ok) {
+                    cancelFetch()
+                    clearGalleries()
+                    currentPage = 0
+                    mode = Mode.SEARCH
+                    queryStack.clear()
+                    fetchGalleries(query, sortMode)
+                    loadBlocks()
+                }
+            }.show()
+        }
+
+        galleryIDs = null
+
+        if (galleryIDs?.isActive == true)
+            return
+
+        galleryIDs = CoroutineScope(Dispatchers.IO).async {
+            when(mode) {
+                Mode.SEARCH -> {
+                    when {
+                        query.isEmpty() and defaultQuery.isEmpty() -> {
+                            when(sortMode) {
+                                SortMode.POPULAR -> getGalleryIDsFromNozomi(null, "popular", "all")
+                                else -> getGalleryIDsFromNozomi(null, "index", "all")
+                            }.also {
+                                totalItems = it.size
+                            }
+                        }
+                        else -> doSearch("$defaultQuery $query", sortMode == SortMode.POPULAR).also {
+                            totalItems = it.size
+                        }
+                    }
+                }
+                Mode.HISTORY -> {
+                    when {
+                        query.isEmpty() -> {
+                            histories.reversed().also {
+                                totalItems = it.size
+                            }
+                        }
+                        else -> {
+                            val result = doSearch(query).sorted()
+                            histories.reversed().filter { result.binarySearch(it) >= 0 }.also {
+                                totalItems = it.size
+                            }
+                        }
+                    }
+                }
+                Mode.DOWNLOAD -> {
+                    val downloads = DownloadManager.getInstance(this@MainActivity).downloadFolderMap.keys.toList()
+
+                    when {
+                        query.isEmpty() -> downloads.reversed().also {
+                            totalItems = it.size
+                        }
+                        else -> {
+                            val result = doSearch(query).sorted()
+                            downloads.reversed().filter { result.binarySearch(it) >= 0 }.also {
+                                totalItems = it.size
+                            }
+                        }
+                    }
+                }
+                Mode.FAVORITE -> {
+                    when {
+                        query.isEmpty() -> favorites.reversed().also {
+                            totalItems = it.size
+                        }
+                        else -> {
+                            val result = doSearch(query).sorted()
+                            favorites.reversed().filter { result.binarySearch(it) >= 0 }.also {
+                                totalItems = it.size
+                            }
+                        }
+                    }
+                }
+            }.toList()
+        }
+    }
+
+    private fun loadBlocks() {
+        val perPage = Preferences["per_page", "25"].toInt()
+
+        loadingJob = CoroutineScope(Dispatchers.IO).launch {
+            val galleryIDs = try {
+                galleryIDs!!.await().also {
+                    if (it.isEmpty())
+                        throw Exception("No result")
+                }
+            } catch (e: Exception) {
+                if (e !is CancellationException)
+                    FirebaseCrashlytics.getInstance().recordException(e)
+
+                withContext(Dispatchers.Main) {
+                    binding.contents.noresult.visibility = View.VISIBLE
+                    binding.contents.progressbar.hide()
+                }
+
+                return@launch
+            }
+
+            launch(Dispatchers.Main) {
+                binding.contents.view.setCurrentPage(currentPage + 1, galleryIDs.size > (currentPage+1)*perPage)
+            }
+
+            galleryIDs.slice(currentPage*perPage until min(currentPage*perPage+perPage, galleryIDs.size)).chunked(5).let { chunks ->
+                for (chunk in chunks)
+                    chunk.map { galleryID ->
+                        async {
+                            Cache.getInstance(this@MainActivity, galleryID).getGalleryBlock()?.let {
+                                galleryID
+                            }
+                        }
+                    }.forEach {
+                        it.await()?.also {
+                            withContext(Dispatchers.Main) {
+                                binding.contents.progressbar.hide()
+
+                                galleries.add(it)
+                                binding.contents.recyclerview.adapter!!.notifyItemInserted(galleries.size - 1)
                             }
                         }
                     }

app/src/main/java/xyz/quaver/pupil/ui/ReaderActivity.kt

@@ -0,0 +1,604 @@
+/*
+ *     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.ui
+
+import android.Manifest
+import android.content.ComponentName
+import android.content.Intent
+import android.content.ServiceConnection
+import android.content.pm.PackageManager
+import android.graphics.drawable.Animatable
+import android.graphics.drawable.Drawable
+import android.os.Build
+import android.os.Bundle
+import android.os.IBinder
+import android.view.*
+import android.view.animation.Animation
+import android.view.animation.AnticipateInterpolator
+import android.view.animation.OvershootInterpolator
+import android.view.animation.TranslateAnimation
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.appcompat.app.AlertDialog
+import androidx.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.google.android.material.snackbar.Snackbar
+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 xyz.quaver.pupil.R
+import xyz.quaver.pupil.adapters.ReaderAdapter
+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.closeCamera
+import xyz.quaver.pupil.util.downloader.Cache
+import xyz.quaver.pupil.util.downloader.DownloadManager
+import xyz.quaver.pupil.util.startCamera
+
+class ReaderActivity : BaseActivity() {
+
+    private var galleryID = 0
+    private var currentPage = 0
+
+    private var isScroll = true
+    private var isFullscreen = false
+    set(value) {
+        field = value
+
+        (binding.recyclerview.adapter as ReaderAdapter).isFullScreen = value
+    }
+
+    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 val snapHelper = PagerSnapHelper()
+    private var menu: Menu? = null
+
+    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
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = ReaderActivityBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        title = getString(R.string.reader_loading)
+        supportActionBar?.setDisplayHomeAsUpEnabled(false)
+
+        handleIntent(intent)
+        cache = Cache.getInstance(this, galleryID)
+        FirebaseCrashlytics.getInstance().setCustomKey("GalleryID", galleryID)
+
+        if (galleryID == 0) {
+            onBackPressed()
+            return
+        }
+
+        initDownloadListener()
+        initView()
+    }
+
+    override fun onNewIntent(intent: Intent) {
+        super.onNewIntent(intent)
+        handleIntent(intent)
+    }
+
+    private fun handleIntent(intent: Intent) {
+        if (intent.action == Intent.ACTION_VIEW) {
+            val uri = intent.data
+            val lastPathSegment = uri?.lastPathSegment
+            if (uri != null && lastPathSegment != null) {
+                galleryID = when (uri.host) {
+                    "hitomi.la" ->
+                        Regex("([0-9]+).html").find(lastPathSegment)?.groupValues?.get(1)?.toIntOrNull() ?: 0
+                    "hiyobi.me" -> lastPathSegment.toInt()
+                    "e-hentai.org" -> uri.pathSegments[1].toInt()
+                    else -> 0
+                }
+            }
+        } else {
+            galleryID = intent.getIntExtra("galleryID", 0)
+        }
+    }
+
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
+        menuInflater.inflate(R.menu.reader, menu)
+
+        with(menu.findItem(R.id.reader_menu_favorite)) {
+            if (favorites.contains(galleryID))
+                (icon as Animatable).start()
+        }
+
+        this.menu = menu
+        return true
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        when(item.itemId) {
+            R.id.reader_menu_page_indicator -> {
+                // 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(binding.root)
+                }.create()
+                binding.okButton.setOnClickListener {
+                    (this@ReaderActivity.binding.recyclerview.layoutManager as LinearLayoutManager).scrollToPositionWithOffset(binding.numberPicker.value-1, 0)
+                    dialog.dismiss()
+                }
+
+                dialog.show()
+            }
+            R.id.reader_menu_favorite -> {
+                val id = galleryID
+                val favorite = menu?.findItem(R.id.reader_menu_favorite) ?: return true
+
+                if (favorites.contains(id)) {
+                    favorites.remove(id)
+                    favorite.icon = AnimatedVectorDrawableCompat.create(this, R.drawable.avd_star)
+                } else {
+                    favorites.add(id)
+                    (favorite.icon as Animatable).start()
+                }
+            }
+        }
+
+        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()
+
+        update = false
+
+        if (!DownloadManager.getInstance(this).isDownloading(galleryID))
+            DownloadService.cancel(this, galleryID)
+    }
+
+    override fun onBackPressed() {
+        if (isScroll and !isFullscreen)
+            super.onBackPressed()
+
+        if (isFullscreen) {
+            isFullscreen = false
+            fullscreen(false)
+        }
+
+        if (!isScroll) {
+            isScroll = true
+            scrollMode(true)
+        }
+    }
+
+    override fun onKeyDown(keyCode: Int, event: KeyEvent?): Boolean {
+        //currentPage is 1-based
+        return when(keyCode) {
+            KeyEvent.KEYCODE_VOLUME_UP -> {
+                (binding.recyclerview.layoutManager as LinearLayoutManager).scrollToPositionWithOffset(currentPage-2, 0)
+
+                true
+            }
+            KeyEvent.KEYCODE_VOLUME_DOWN -> {
+                (binding.recyclerview.layoutManager as LinearLayoutManager?)?.scrollToPositionWithOffset(currentPage, 0)
+
+                true
+            }
+            else -> super.onKeyDown(keyCode, event)
+        }
+    }
+
+    private var update = true
+    private fun initDownloadListener() {
+        CoroutineScope(Dispatchers.Main).launch {
+            while (update) {
+                delay(1000)
+
+                val downloader = downloader ?: continue
+
+                if (!downloader.progress.containsKey(galleryID))  //loading
+                    continue
+
+                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
+                }
+
+                binding.downloadProgressbar.max = binding.recyclerview.adapter?.itemCount ?: 0
+                binding.downloadProgressbar.progress =
+                    downloader.progress[galleryID]?.count { it.isInfinite() } ?: 0
+
+                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.isCompleted(galleryID)) {   //Download finished
+                    binding.downloadProgressbar.visibility = View.GONE
+
+                    animateDownloadFAB(false)
+                }
+            }
+        }
+    }
+
+    private fun initView() {
+        with(binding.recyclerview) {
+            adapter = ReaderAdapter(this@ReaderActivity, galleryID).apply {
+                onItemClickListener = {
+                    if (isScroll) {
+                        isScroll = false
+                        isFullscreen = true
+
+                        scrollMode(false)
+                        fullscreen(true)
+                    } else {
+                        (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(binding.downloadFab) {
+            animateDownloadFAB(DownloadManager.getInstance(this@ReaderActivity).getDownloadFolder(galleryID) != null) //If download in progress, animate button
+
+            setOnClickListener {
+                val downloadManager = DownloadManager.getInstance(this@ReaderActivity)
+
+                if (downloadManager.isDownloading(galleryID)) {
+                    downloadManager.deleteDownloadFolder(galleryID)
+                    animateDownloadFAB(false)
+                } else {
+                    downloadManager.addDownloadFolder(galleryID)
+                    DownloadService.download(context, galleryID, true)
+                    animateDownloadFAB(true)
+                }
+            }
+        }
+
+        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)
+
+                binding.fab.close(true)
+            }
+        }
+    }
+
+    private fun fullscreen(isFullscreen: Boolean) {
+        with(window.attributes) {
+            if (isFullscreen) {
+                flags = flags or WindowManager.LayoutParams.FLAG_FULLSCREEN
+                supportActionBar?.hide()
+                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()
+                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)
+            binding.recyclerview.layoutManager = LinearLayoutManager(this)
+        } else {
+            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)
+                }
+            }
+        }
+
+        (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
+            }
+        }
+    }
+}

app/src/main/java/xyz/quaver/pupil/ui/SettingsActivity.kt

@@ -0,0 +1,45 @@
+/*
+ *     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.ui
+
+import android.os.Bundle
+import android.view.MenuItem
+import xyz.quaver.pupil.R
+import xyz.quaver.pupil.ui.fragment.SettingsFragment
+
+class SettingsActivity : BaseActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.settings_activity)
+        supportFragmentManager
+            .beginTransaction()
+            .replace(R.id.settings, SettingsFragment())
+            .commit()
+        supportActionBar?.setDisplayHomeAsUpEnabled(true)
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        when (item.itemId) {
+            android.R.id.home -> onBackPressed()
+        }
+
+        return true
+    }
+}

app/src/main/java/xyz/quaver/pupil/ui/SourceSelector.kt

@@ -1,352 +0,0 @@
-/*
- *     Pupil, Hitomi.la viewer for Android
- *     Copyright (C) 2021 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 <https://www.gnu.org/licenses/>.
- */
-
-package xyz.quaver.pupil.ui
-
-import android.app.Application
-import android.content.Intent
-import android.net.Uri
-import android.provider.Settings
-import androidx.compose.foundation.Image
-import androidx.compose.foundation.layout.*
-import androidx.compose.foundation.lazy.LazyColumn
-import androidx.compose.foundation.lazy.items
-import androidx.compose.material.*
-import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.filled.Download
-import androidx.compose.material.icons.filled.DownloadDone
-import androidx.compose.material.icons.filled.Explore
-import androidx.compose.material.icons.outlined.Info
-import androidx.compose.runtime.*
-import androidx.compose.ui.Alignment
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.vector.ImageVector
-import androidx.compose.ui.platform.LocalContext
-import androidx.compose.ui.text.capitalize
-import androidx.compose.ui.text.intl.Locale
-import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.unit.dp
-import androidx.navigation.NavDestination.Companion.hierarchy
-import androidx.navigation.NavGraph.Companion.findStartDestination
-import androidx.navigation.compose.NavHost
-import androidx.navigation.compose.composable
-import androidx.navigation.compose.currentBackStackEntryAsState
-import androidx.navigation.compose.rememberNavController
-import coil.compose.AsyncImage
-import com.google.accompanist.drawablepainter.rememberDrawablePainter
-import com.google.accompanist.insets.LocalWindowInsets
-import com.google.accompanist.insets.rememberInsetsPaddingValues
-import com.google.accompanist.insets.systemBarsPadding
-import com.google.accompanist.insets.ui.BottomNavigation
-import com.google.accompanist.insets.ui.Scaffold
-import com.google.accompanist.insets.ui.TopAppBar
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.launch
-import kotlinx.coroutines.withContext
-import org.kodein.di.DI
-import org.kodein.di.DIAware
-import org.kodein.di.compose.localDI
-import org.kodein.di.instance
-import xyz.quaver.pupil.sources.SourceEntry
-import xyz.quaver.pupil.sources.rememberLocalSourceList
-import xyz.quaver.pupil.sources.rememberRemoteSourceList
-import xyz.quaver.pupil.util.PupilHttpClient
-import xyz.quaver.pupil.util.RemoteSourceInfo
-import xyz.quaver.pupil.util.launchApkInstaller
-import java.io.File
-
-private sealed class SourceSelectorScreen(val route: String, val icon: ImageVector) {
-    object Local: SourceSelectorScreen("local", Icons.Default.DownloadDone)
-    object Explore: SourceSelectorScreen("explore", Icons.Default.Explore)
-}
-
-private val sourceSelectorScreens = listOf(
-    SourceSelectorScreen.Local,
-    SourceSelectorScreen.Explore
-)
-
-private val RemoteSourceInfo.apkUrl: String
-    get() = "https://github.com/tom5079/PupilSources/releases/download/$name-$version/$projectName-release.apk"
-
-
-class DownloadApkActionState(override val di: DI) : DIAware {
-    private val app: Application by instance()
-    private val client: PupilHttpClient by instance()
-
-    var progress by mutableStateOf<Float?>(null)
-        private set
-
-    suspend fun download(url: String): File? = withContext(Dispatchers.IO) {
-        progress = 0f
-
-        val file = File.createTempFile("pupil", ".apk", File(app.cacheDir, "apks").also {
-            it.mkdirs()
-        })
-
-        client.downloadFile(url, file).collect { progress = it }
-
-        if (progress == Float.POSITIVE_INFINITY) file else null
-    }
-
-    fun reset() {
-        progress = null
-    }
-}
-
-@Composable
-fun rememberDownloadApkActionState(di: DI = localDI()) = remember { DownloadApkActionState(di) }
-
-@Composable
-fun DownloadApkAction(
-    state: DownloadApkActionState,
-    content: @Composable () -> Unit
-) {
-    state.progress?.let { progress ->
-        Box(
-            Modifier.padding(12.dp, 0.dp)
-        ) {
-            when {
-                progress.isFinite() && progress > 0f ->
-                    CircularProgressIndicator(progress, modifier = Modifier.size(24.dp))
-                else ->
-                    CircularProgressIndicator(modifier = Modifier.size(24.dp))
-            }
-        }
-
-        true
-    } ?: content()
-}
-
-@Composable
-fun SourceListItem(icon: @Composable (Modifier) -> Unit = { }, name: String, version: String, actions: @Composable () -> Unit = { }) {
-    Card(
-        modifier = Modifier.padding(8.dp),
-        elevation = 4.dp
-    ) {
-        Row(
-            modifier = Modifier.fillMaxWidth(),
-            verticalAlignment = Alignment.CenterVertically,
-            horizontalArrangement = Arrangement.spacedBy(8.dp)
-        ) {
-            icon(Modifier.size(48.dp))
-
-            Column(
-                Modifier.weight(1f)
-            ) {
-                Text(name.capitalize(Locale.current))
-
-                CompositionLocalProvider(LocalContentAlpha provides 0.5f) {
-                    Text(
-                        "v$version",
-                        style = MaterialTheme.typography.caption
-                    )
-                }
-            }
-
-            actions()
-        }
-    }
-}
-
-@Composable
-fun Local(onSource: (SourceEntry) -> Unit) {
-    val coroutineScope = rememberCoroutineScope()
-    val context = LocalContext.current
-
-    val localSourceList by rememberLocalSourceList()
-    val remoteSourceList by rememberRemoteSourceList()
-
-    if (localSourceList.isEmpty()) {
-        Box(Modifier.fillMaxSize()) {
-            Column(
-                Modifier.align(Alignment.Center),
-                horizontalAlignment = Alignment.CenterHorizontally,
-                verticalArrangement = Arrangement.spacedBy(16.dp)
-            ) {
-                CompositionLocalProvider(LocalContentAlpha provides 0.5f) {
-                    Text("(´∇｀)", style = MaterialTheme.typography.h2)
-                }
-                Text("No sources found!\nLet's go download one.", textAlign = TextAlign.Center)
-            }
-        }
-    } else {
-        LazyColumn {
-            items(localSourceList) { source ->
-                val actionState = rememberDownloadApkActionState()
-
-                SourceListItem(
-                    icon = { modifier ->
-                        Image(
-                            rememberDrawablePainter(source.icon),
-                            contentDescription = "source icon",
-                            modifier = modifier
-                        )
-                    },
-                    source.sourceName,
-                    source.version
-                ) {
-                    DownloadApkAction(actionState) {
-                        val remoteSource = remoteSourceList?.get(source.packageName)
-                        if (remoteSource != null && remoteSource.version != source.version) {
-                            TextButton(onClick = {
-                                coroutineScope.launch {
-                                    val file = actionState.download(remoteSource.apkUrl)!! // TODO("Handle error")
-                                    context.launchApkInstaller(file)
-                                    actionState.reset()
-                                }
-                            }) {
-                                Text("UPDATE")
-                            }
-                        } else {
-                            TextButton(
-                                onClick = { onSource(source) }
-                            ) {
-                                Text("GO")
-                            }
-                        }
-                    }
-                }
-            }
-        }
-    }
-}
-
-@Composable
-fun Explore() {
-    val localSourceList by rememberLocalSourceList()
-    val localSources by derivedStateOf {
-        localSourceList.associateBy {
-            it.packageName
-        }
-    }
-
-    val context = LocalContext.current
-
-    val coroutineScope = rememberCoroutineScope()
-
-    val remoteSources by rememberRemoteSourceList()
-
-    Box(
-        Modifier.fillMaxSize()
-    ) {
-        if (remoteSources == null)
-            CircularProgressIndicator(Modifier.align(Alignment.Center))
-        else
-            LazyColumn {
-                items(remoteSources?.values?.toList().orEmpty()) { sourceInfo ->
-                    val actionState = rememberDownloadApkActionState()
-
-                    SourceListItem(
-                        icon = { modifier ->
-                            AsyncImage(
-                                "https://raw.githubusercontent.com/tom5079/PupilSources/master/${sourceInfo.projectName}/src/main/res/mipmap-xxxhdpi/ic_launcher.png",
-                                contentDescription = "source icon",
-                                modifier = modifier
-                            )
-                        },
-                        sourceInfo.name,
-                        sourceInfo.version
-                    ) {
-                        DownloadApkAction(actionState) {
-                            if (localSources[sourceInfo.name]?.version != sourceInfo.version) {
-                                TextButton(onClick = {
-                                    coroutineScope.launch {
-                                        val file = actionState.download(sourceInfo.apkUrl)!! // TODO("Handle exception")
-                                        context.launchApkInstaller(file)
-                                        actionState.reset()
-                                    }
-                                }) {
-                                    Text("UPDATE")
-                                }
-                            } else {
-                                IconButton(onClick = {
-                                    if (sourceInfo.name in localSources) {
-                                        context.startActivity(
-                                            Intent(
-                                                Settings.ACTION_APPLICATION_DETAILS_SETTINGS,
-                                                Uri.fromParts("package", localSources[sourceInfo.name]!!.packagePath, null)
-                                            )
-                                        )
-                                    } else coroutineScope.launch {
-                                        val file = actionState.download(sourceInfo.apkUrl)!! // TODO("Handle exception")
-                                        context.launchApkInstaller(file)
-                                        actionState.reset()
-                                    }
-                                }) {
-                                    Icon(
-                                        if (sourceInfo.name !in localSources) Icons.Default.Download
-                                        else                                  Icons.Outlined.Info,
-                                        contentDescription = "download"
-                                    )
-                                }
-                            }
-                        }
-                    }
-                }
-            }
-    }
-}
-
-@Composable
-fun SourceSelector(onSource: (SourceEntry) -> Unit) {
-    val bottomNavController = rememberNavController()
-
-    Scaffold(
-        topBar = {
-            TopAppBar(
-                title = {
-                    Text("Pupil")
-                },
-                contentPadding = rememberInsetsPaddingValues(LocalWindowInsets.current.statusBars)
-            )
-        },
-        bottomBar = {
-            BottomNavigation(
-                contentPadding = rememberInsetsPaddingValues(LocalWindowInsets.current.navigationBars)
-            ) {
-                val navBackStackEntry by bottomNavController.currentBackStackEntryAsState()
-                val currentDestination = navBackStackEntry?.destination
-
-                sourceSelectorScreens.forEach { screen ->
-                    BottomNavigationItem(
-                        icon = { Icon(screen.icon, contentDescription = screen.route) },
-                        label = { Text(screen.route) },
-                        selected = currentDestination?.hierarchy?.any { it.route == screen.route } == true,
-                        onClick = {
-                            bottomNavController.navigate(screen.route) {
-                                popUpTo(bottomNavController.graph.findStartDestination().id) {
-                                    saveState = true
-                                }
-                                launchSingleTop = true
-                                restoreState = true
-                            }
-                        }
-                    )
-                }
-            }
-        }
-    ) { contentPadding ->
-        NavHost(bottomNavController, startDestination = "local", modifier = Modifier
-            .systemBarsPadding(top = false, bottom = false)
-            .padding(contentPadding)) {
-            composable(SourceSelectorScreen.Local.route) { Local(onSource) }
-            composable(SourceSelectorScreen.Explore.route) { Explore() }
-        }
-    }
-
-}

app/src/main/java/xyz/quaver/pupil/ui/UpdateDialog.kt

@@ -1,95 +0,0 @@
-/*
- *     Pupil, Hitomi.la viewer for Android
- *     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
- *     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 androidx.compose.foundation.layout.*
-import androidx.compose.material.*
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.rememberCoroutineScope
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.platform.LocalContext
-import androidx.compose.ui.unit.dp
-import androidx.compose.ui.window.Dialog
-import kotlinx.coroutines.launch
-import org.kodein.di.compose.onDIContext
-import xyz.quaver.pupil.util.Release
-import xyz.quaver.pupil.util.launchApkInstaller
-import java.util.*
-
-@Composable
-fun UpdateAlertDialog(
-    show: Boolean,
-    release: Release,
-    onDismiss: () -> Unit
-) {
-    val state = rememberDownloadApkActionState()
-
-    val coroutineScope = rememberCoroutineScope()
-    val context = LocalContext.current
-
-    if (show) {
-        Dialog(onDismissRequest = { if (state.progress == null) onDismiss() }) {
-            Card {
-                val progress = state.progress
-
-                if (progress != null) {
-                    if (progress.isFinite() && progress > 0)
-                        LinearProgressIndicator(progress)
-                    else
-                        LinearProgressIndicator()
-                }
-
-                Column(
-                    Modifier.padding(start = 8.dp, top = 8.dp, end = 8.dp, bottom = 0.dp),
-                    verticalArrangement = Arrangement.spacedBy(8.dp)
-                ) {
-                    Text(
-                        "Update Available",
-                        style = MaterialTheme.typography.h6
-                    )
-
-                    Text(release.releaseNotes.getOrElse(Locale.getDefault()) { release.releaseNotes[Locale.ENGLISH]!! })
-
-                    Row(
-                        Modifier.fillMaxWidth(),
-                        horizontalArrangement = Arrangement.End
-                    ) {
-                        TextButton(onClick = onDismiss, enabled = progress == null) {
-                            Text("DISMISS")
-                        }
-
-                        TextButton(
-                            onClick = {
-                                coroutineScope.launch {
-                                    val file = state.download(release.apkUrl)!! // TODO("Handle exception")
-                                    context.launchApkInstaller(file)
-                                    state.reset()
-                                    onDismiss()
-                                }
-                            },
-                            enabled = progress == null
-                        ) {
-                            Text("UPDATE")
-                        }
-                    }
-                }
-            }
-        }
-    }
-}

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().toLowerCase(java.util.Locale.getDefault())
+                        )
+                }
+            })
+        }
+    }
+
+    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
+    }
+
+}

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()
+        }
+    }
+
+}

app/src/main/java/xyz/quaver/pupil/ui/dialog/DownloadLocationDialogFragment.kt

@@ -0,0 +1,199 @@
+/*
+ *     Pupil, Hitomi.la viewer for Android
+ *     Copyright (C) 2020  tom5079
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package xyz.quaver.pupil.ui.dialog
+
+import android.app.Activity
+import android.app.Dialog
+import android.content.Intent
+import android.os.Build
+import android.os.Bundle
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.appcompat.app.AlertDialog
+import androidx.core.content.ContextCompat
+import androidx.core.net.toUri
+import androidx.fragment.app.DialogFragment
+import com.google.android.material.snackbar.Snackbar
+import net.rdrei.android.dirchooser.DirectoryChooserActivity
+import net.rdrei.android.dirchooser.DirectoryChooserConfig
+import xyz.quaver.io.FileX
+import xyz.quaver.io.util.toFile
+import xyz.quaver.pupil.R
+import xyz.quaver.pupil.databinding.DownloadLocationDialogBinding
+import xyz.quaver.pupil.databinding.DownloadLocationItemBinding
+import xyz.quaver.pupil.util.Preferences
+import xyz.quaver.pupil.util.byteToString
+import xyz.quaver.pupil.util.downloader.DownloadManager
+import java.io.File
+
+class DownloadLocationDialogFragment : DialogFragment() {
+
+    private var _binding: DownloadLocationDialogBinding? = null
+    private val binding get() = _binding!!
+
+    private val entries = mutableMapOf<File?, DownloadLocationItemBinding>()
+
+    private val requestDownloadFolderLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
+        if (it.resultCode == Activity.RESULT_OK) {
+            val context = context ?: return@registerForActivityResult
+            val dialog = dialog ?: return@registerForActivityResult
+
+            it.data?.data?.also { uri ->
+                val takeFlags: Int = Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION
+
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT)
+                    context.contentResolver.takePersistableUriPermission(uri, takeFlags)
+
+                if (kotlin.runCatching { FileX(context, uri).canWrite() }.getOrDefault(false)) {
+                    entries[null]?.locationAvailable?.text = uri.toFile(context)?.canonicalPath
+                    Preferences["download_folder"] = uri.toString()
+                } else {
+                    Snackbar.make(
+                        dialog.window!!.decorView.rootView,
+                        R.string.settings_download_folder_not_writable,
+                        Snackbar.LENGTH_LONG
+                    ).show()
+
+                    val downloadFolder = DownloadManager.getInstance(context).downloadFolder.canonicalPath
+                    val key = entries.keys.firstOrNull { it?.canonicalPath == downloadFolder }
+                    entries[key]!!.button.isChecked = true
+                    if (key == null) entries[key]!!.locationAvailable.text = downloadFolder
+                }
+            }
+        } else {
+            val downloadFolder = DownloadManager.getInstance(context ?: return@registerForActivityResult).downloadFolder.canonicalPath
+            val key = entries.keys.firstOrNull { it?.canonicalPath == downloadFolder }
+            if (key == null)
+                entries[key]!!.locationAvailable.text = downloadFolder
+            else {
+                entries[null]!!.button.isChecked = false
+                entries[key]!!.button.isChecked = true
+            }
+        }
+    }
+
+    private val requestDownloadFolderOldLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
+        val context = context ?: return@registerForActivityResult
+        val dialog = dialog ?: return@registerForActivityResult
+
+        if (it.resultCode == DirectoryChooserActivity.RESULT_CODE_DIR_SELECTED) {
+            val directory = it.data?.getStringExtra(DirectoryChooserActivity.RESULT_SELECTED_DIR)!!
+
+            if (!File(directory).canWrite()) {
+                Snackbar.make(
+                    dialog.window!!.decorView.rootView,
+                    R.string.settings_download_folder_not_writable,
+                    Snackbar.LENGTH_LONG
+                ).show()
+
+                val downloadFolder = DownloadManager.getInstance(context).downloadFolder.canonicalPath
+                val key = entries.keys.firstOrNull { it?.canonicalPath == downloadFolder }
+                entries[key]!!.button.isChecked = true
+                if (key == null) entries[key]!!.locationAvailable.text = downloadFolder
+            }
+            else {
+                entries[null]?.locationAvailable?.text = directory
+                Preferences["download_folder"] = File(directory).toURI().toString()
+            }
+        }
+    }
+
+    private fun initView() {
+        val externalFilesDirs = ContextCompat.getExternalFilesDirs(requireContext(), null)
+
+        externalFilesDirs.forEachIndexed { index, dir ->
+            dir ?: return@forEachIndexed
+
+            DownloadLocationItemBinding.inflate(layoutInflater, binding.root, true).apply {
+                locationType.text = requireContext().getString(when (index) {
+                    0 -> R.string.settings_download_folder_internal
+                    else -> R.string.settings_download_folder_removable
+                })
+                locationAvailable.text = requireContext().getString(
+                    R.string.settings_download_folder_available,
+                    byteToString(dir.freeSpace)
+                )
+                root.setOnClickListener {
+                    entries.values.forEach { entry ->
+                        entry.button.isChecked = false
+                    }
+                    button.performClick()
+                    Preferences["download_folder"] = dir.toUri().toString()
+                }
+                entries[dir] = this
+            }
+        }
+
+        DownloadLocationItemBinding.inflate(layoutInflater, binding.root, true).apply {
+            locationType.text = requireContext().getString(R.string.settings_download_folder_custom)
+            root.setOnClickListener {
+                entries.values.forEach { entry ->
+                    entry.button.isChecked = false
+                }
+                button.performClick()
+
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+                    val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE).apply {
+                        putExtra("android.content.extra.SHOW_ADVANCED", true)
+                    }
+
+                    requestDownloadFolderLauncher.launch(intent)
+                } else {    // Can't use SAF on old Androids!
+                    val config = DirectoryChooserConfig.builder()
+                        .newDirectoryName("Pupil")
+                        .allowNewDirectoryNameModification(true)
+                        .build()
+
+                    val intent = Intent(context, DirectoryChooserActivity::class.java).apply {
+                        putExtra(DirectoryChooserActivity.EXTRA_CONFIG, config)
+                    }
+
+                    requestDownloadFolderOldLauncher.launch(intent)
+                }
+            }
+            entries[null] = this
+        }
+
+        val downloadFolder = DownloadManager.getInstance(requireContext()).downloadFolder.canonicalPath
+        val key = entries.keys.firstOrNull { it?.canonicalPath == downloadFolder }
+        entries[key]!!.button.isChecked = true
+        if (key == null) entries[key]!!.locationAvailable.text = downloadFolder
+    }
+
+    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+        _binding = DownloadLocationDialogBinding.inflate(layoutInflater)
+
+        initView()
+
+        return AlertDialog.Builder(requireContext()).apply {
+            setTitle(R.string.settings_download_folder)
+            setView(binding.root)
+            setPositiveButton(requireContext().getText(android.R.string.ok)) { _, _ ->
+                if (Preferences["download_folder", ""].isEmpty())
+                    Preferences["download_folder"] = context.getExternalFilesDir(null)?.toUri()?.toString() ?: ""
+            }
+
+            isCancelable = false
+        }.create()
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        _binding = null
+    }
+}

app/src/main/java/xyz/quaver/pupil/ui/dialog/GalleryDialog.kt

@@ -0,0 +1,255 @@
+/*
+ *     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.content.Context
+import android.content.Intent
+import android.net.Uri
+import android.os.Bundle
+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.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import androidx.viewpager2.widget.ViewPager2
+import com.google.android.material.snackbar.Snackbar
+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.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) : AlertDialog(context) {
+
+    val onChipClickedHandler = ArrayList<((Tag) -> (Unit))>()
+
+    private lateinit var binding: GalleryDialogBinding
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = GalleryDialogBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        window?.attributes.apply {
+            this ?: return@apply
+
+            width = LayoutParams.MATCH_PARENT
+            height = LayoutParams.MATCH_PARENT
+        }
+
+        with(binding.fab) {
+            setImageDrawable(ContextCompat.getDrawable(context, R.drawable.arrow_right))
+            setOnClickListener {
+                context.startActivity(Intent(context, ReaderActivity::class.java).apply {
+                    putExtra("galleryID", galleryID)
+                })
+            }
+        }
+
+        CoroutineScope(Dispatchers.IO).launch {
+            try {
+                val gallery = getGallery(galleryID)
+
+                launch (Dispatchers.Main) {
+                    binding.progressbar.visibility = View.GONE
+                    binding.title.text = gallery.title
+                    binding.artist.text = gallery.artists.joinToString(", ") { it.wordCapitalize() }
+
+                    with(binding.type) {
+                        text = gallery.type.wordCapitalize()
+                        setOnClickListener {
+                            gallery.type.let {
+                                when (it) {
+                                    "artist CG" -> "artistcg"
+                                    "game CG" -> "gamecg"
+                                    else -> it
+                                }
+                            }.let {
+                                onChipClickedHandler.forEach { handler ->
+                                    handler.invoke(Tag("type", it))
+                                }
+                            }
+                        }
+                    }
+
+                    binding.cover.showImage(Uri.parse(gallery.cover))
+
+                    addDetails(gallery)
+                    addThumbnails(gallery)
+                    addRelated(gallery)
+                }
+            } catch (e: Exception) {
+                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) {
+        GalleryDialogDetailsBinding.inflate(layoutInflater, binding.contents, true).apply {
+            type.setText(R.string.gallery_details)
+
+            listOf(
+                R.string.gallery_artists,
+                R.string.gallery_groups,
+                R.string.gallery_language,
+                R.string.gallery_series,
+                R.string.gallery_characters,
+                R.string.gallery_tags
+            ).zip(
+                listOf(
+                    gallery.artists.map { Tag("artist", it) },
+                    gallery.groups.map { Tag("group", it) },
+                    listOf(gallery.language).map { Tag("language", it) },
+                    gallery.series.map { Tag("series", it) },
+                    gallery.characters.map { Tag("character", it) },
+                    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
+                                else -> Tag("tag", it)
+                            }
+                        }
+                    }
+                )
+            ).filter {
+                    (_, content) -> content.isNotEmpty()
+            }.forEach { (title, content) ->
+                GalleryDialogTagsBinding.inflate(layoutInflater, contents, true).apply {
+                    type.setText(title)
+
+                    content.forEach { tag ->
+                        tags.addView(
+                            TagChip(context, tag).apply {
+                                setOnClickListener {
+                                    onChipClickedHandler.forEach { handler ->
+                                        handler.invoke(tag)
+                                    }
+                                }
+                            }
+                        )
+                    }
+                }
+            }
+        }
+    }
+
+    private fun addThumbnails(gallery: Gallery) {
+        GalleryDialogDetailsBinding.inflate(layoutInflater, binding.contents, true).apply {
+            type.setText(R.string.gallery_thumbnails)
+
+            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)
+            }
+        }
+    }
+
+    private fun addRelated(gallery: Gallery) {
+        val galleries = mutableListOf<Int>()
+
+        val adapter = GalleryBlockAdapter(galleries).apply {
+            onChipClickedHandler.add { tag ->
+                this@GalleryDialog.onChipClickedHandler.forEach { handler ->
+                    handler.invoke(tag)
+                }
+            }
+        }
+
+        GalleryDialogDetailsBinding.inflate(layoutInflater, binding.contents, true).apply {
+            type.setText(R.string.gallery_related)
+
+            contents.addView(RecyclerView(context).apply {
+                layoutManager = LinearLayoutManager(context)
+                this.adapter = adapter
+
+                ItemClickSupport.addTo(this).apply {
+                    onItemClickListener = { _, position, _ ->
+                        context.startActivity(Intent(context, ReaderActivity::class.java).apply {
+                            putExtra("galleryID", galleries[position])
+                        })
+                    }
+                    onItemLongClickListener = { _, position, _ ->
+                        GalleryDialog(context, galleries[position]).apply {
+                            onChipClickedHandler.add { tag ->
+                                this@GalleryDialog.onChipClickedHandler.forEach { it.invoke(tag) }
+                            }
+                        }.show()
+
+                        true
+                    }
+                }
+            })
+
+            CoroutineScope(Dispatchers.IO).launch {
+                gallery.related.forEach { galleryID ->
+                    Cache.getInstance(context, galleryID).getGalleryBlock()?.let {
+                        galleries.add(galleryID)
+                    }
+                }
+
+                withContext(Dispatchers.Main) {
+                    adapter.notifyDataSetChanged()
+                }
+            }
+        }
+    }
+
+}

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()
+        }
+    }
+
+}

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
+            }
+        }
+    }
+}

app/src/main/java/xyz/quaver/pupil/ui/fragment/ManageFavoritesFragment.kt

@@ -0,0 +1,106 @@
+/*
+ *     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.EditText
+import android.widget.TextView
+import androidx.appcompat.app.AlertDialog
+import androidx.core.content.ContextCompat
+import androidx.preference.Preference
+import androidx.preference.PreferenceFragmentCompat
+import com.google.android.material.snackbar.Snackbar
+import okhttp3.*
+import xyz.quaver.pupil.R
+import xyz.quaver.pupil.client
+import xyz.quaver.pupil.favorites
+import xyz.quaver.pupil.util.restore
+import java.io.File
+import java.io.IOException
+
+class ManageFavoritesFragment : PreferenceFragmentCompat() {
+
+    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 request = Request.Builder()
+                .url(context.getString(R.string.backup_url))
+                .post(
+                    FormBody.Builder()
+                        .add("f:1", File(ContextCompat.getDataDir(context), "favorites.json").readText())
+                        .build()
+                ).build()
+
+            client.newCall(request).enqueue(object: Callback {
+                override fun onFailure(call: Call, e: IOException) {
+                    val view = view ?: return
+                    Snackbar.make(view, R.string.settings_backup_failed, Snackbar.LENGTH_LONG).show()
+                }
+
+                override fun onResponse(call: Call, response: Response) {
+                    if (response.code() != 200) {
+                        response.close()
+                        return
+                    }
+
+                    Intent(Intent.ACTION_SEND).apply {
+                        type = "text/plain"
+                        putExtra(Intent.EXTRA_TEXT, response.body()?.use { it.string() }?.replace("\n", ""))
+                    }.let {
+                        getContext()?.startActivity(Intent.createChooser(it, getString(R.string.settings_backup_share)))
+                    }
+                }
+            })
+
+            true
+        }
+        findPreference<Preference>("restore")?.setOnPreferenceClickListener {
+            val editText = EditText(context).apply {
+                setText(context.getString(R.string.backup_url), TextView.BufferType.EDITABLE)
+            }
+
+            AlertDialog.Builder(context)
+                .setTitle(R.string.settings_restore_title)
+                .setView(editText)
+                .setPositiveButton(android.R.string.ok) { _, _ ->
+                    restore(editText.text.toString(),
+                        onFailure = onFailure@{
+                            val view = view ?: return@onFailure
+                            Snackbar.make(view, R.string.settings_restore_failed, Snackbar.LENGTH_LONG).show()
+                        }, onSuccess = onSuccess@{
+                            val view = view ?: return@onSuccess
+                            Snackbar.make(view, context.getString(R.string.settings_restore_success, it.size), Snackbar.LENGTH_LONG).show()
+                        })
+                }.setNegativeButton(android.R.string.cancel) { _, _ ->
+                    // Do Nothing
+                }.show()
+
+            true
+        }
+    }
+
+}

app/src/main/java/xyz/quaver/pupil/ui/fragment/ManageStorageFragment.kt

@@ -0,0 +1,201 @@
+/*
+ *     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 androidx.appcompat.app.AlertDialog
+import androidx.preference.Preference
+import androidx.preference.PreferenceFragmentCompat
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.launch
+import xyz.quaver.io.FileX
+import xyz.quaver.io.util.deleteRecursively
+import xyz.quaver.pupil.R
+import xyz.quaver.pupil.histories
+import xyz.quaver.pupil.util.byteToString
+import xyz.quaver.pupil.util.downloader.Cache
+import xyz.quaver.pupil.util.downloader.DownloadManager
+import java.io.File
+
+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) {
+            this ?: return false
+
+            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()
+                }
+                "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
+        }
+    }
+
+    override fun onDestroy() {
+        job?.cancel()
+        super.onDestroy()
+    }
+
+}

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
+    }
+
+}

app/src/main/java/xyz/quaver/pupil/ui/fragment/PatternLockFragment.kt

@@ -0,0 +1,61 @@
+/*
+ *     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.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.patternlockview.PatternLockView
+import com.andrognito.patternlockview.listener.PatternLockViewListener
+import com.andrognito.patternlockview.utils.PatternLockUtils
+import xyz.quaver.pupil.databinding.PatternLockFragmentBinding
+
+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 {
+        _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 onDestroy() {
+        super.onDestroy()
+        _binding = null
+    }
+
+}

app/src/main/java/xyz/quaver/pupil/ui/fragment/SettingsFragment.kt

@@ -0,0 +1,313 @@
+/*
+ *     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.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 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.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) {
+            this ?: return false
+
+            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()
+                }
+                else -> return false
+            }
+        }
+
+        return true
+    }
+
+    override fun onPreferenceChange(preference: Preference?, newValue: Any?): Boolean {
+        with (preference) {
+            this ?: return false
+
+            when (key) {
+                "tag_translation" -> {
+                    updateTranslations()
+                }
+                "nomedia" -> {
+                    val create = (newValue as? Boolean) ?: return false
+
+                    return kotlin.runCatching {
+                        val nomedia = DownloadManager.getInstance(context).downloadFolder.getChild(".nomedia")
+
+                        if (create)
+                            nomedia.createNewFile()
+                        else
+                            nomedia.delete()
+                    }.getOrDefault(false)
+                }
+                "dark_mode" -> {
+                    AppCompatDelegate.setDefaultNightMode(when (newValue as Boolean) {
+                        true -> AppCompatDelegate.MODE_NIGHT_YES
+                        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
+                            }
+                        }
+                    }
+
+                }
+            }
+        }
+    }
+}

app/src/main/java/xyz/quaver/pupil/ui/theme/Color.kt

@@ -1,28 +0,0 @@
-/*
- *     Pupil, Hitomi.la viewer for Android
- *     Copyright (C) 2021 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 <https://www.gnu.org/licenses/>.
- */
-
-package xyz.quaver.pupil.ui.theme
-
-import androidx.compose.ui.graphics.Color
-
-val LightBlue300 = Color(0xFF4FC3F7)
-val LightBlue700 = Color(0xFF0288D1)
-val Pink600 = Color(0xFFD81B60)
-val Blue700 = Color(0xFF1976D2)
-val GreenA700 = Color(0xFF00C853)
-val Orange500 = Color(0xFFFF9800)

app/src/main/java/xyz/quaver/pupil/ui/theme/Shape.kt

@@ -1,29 +0,0 @@
-/*
- *     Pupil, Hitomi.la viewer for Android
- *     Copyright (C) 2021 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 <https://www.gnu.org/licenses/>.
- */
-
-package xyz.quaver.pupil.ui.theme
-
-import androidx.compose.foundation.shape.RoundedCornerShape
-import androidx.compose.material.Shapes
-import androidx.compose.ui.unit.dp
-
-val Shapes = Shapes(
-    small = RoundedCornerShape(4.dp),
-    medium = RoundedCornerShape(4.dp),
-    large = RoundedCornerShape(0.dp)
-)

app/src/main/java/xyz/quaver/pupil/ui/theme/Theme.kt

@@ -1,57 +0,0 @@
-/*
- *     Pupil, Hitomi.la viewer for Android
- *     Copyright (C) 2021 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 <https://www.gnu.org/licenses/>.
- */
-
-package xyz.quaver.pupil.ui.theme
-
-import androidx.compose.foundation.isSystemInDarkTheme
-import androidx.compose.material.MaterialTheme
-import androidx.compose.material.contentColorFor
-import androidx.compose.material.darkColors
-import androidx.compose.material.lightColors
-import androidx.compose.runtime.Composable
-import androidx.compose.ui.graphics.Color
-
-private val DarkColorPalette = darkColors(
-    primary = LightBlue300,
-    primaryVariant = LightBlue700,
-    secondary = Pink600,
-    onPrimary = Color.White,
-    onSecondary = Color.White
-)
-private val LightColorPalette = lightColors(
-    primary = LightBlue300,
-    primaryVariant = LightBlue700,
-    secondary = Pink600,
-    onPrimary = Color.White,
-    onSecondary = Color.White
-)
-
-@Composable
-fun PupilTheme(
-    darkTheme: Boolean = isSystemInDarkTheme(),
-    content: @Composable () -> Unit
-) {
-    val colors = if (darkTheme) DarkColorPalette else LightColorPalette
-
-    MaterialTheme(
-        colors = colors,
-        typography = Typography,
-        shapes = Shapes,
-        content = content
-    )
-}

app/src/main/java/xyz/quaver/pupil/ui/theme/Type.kt

@@ -1,33 +0,0 @@
-/*
- *     Pupil, Hitomi.la viewer for Android
- *     Copyright (C) 2021 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 <https://www.gnu.org/licenses/>.
- */
-
-package xyz.quaver.pupil.ui.theme
-
-import androidx.compose.material.Typography
-import androidx.compose.ui.text.TextStyle
-import androidx.compose.ui.text.font.FontFamily
-import androidx.compose.ui.text.font.FontWeight
-import androidx.compose.ui.unit.sp
-
-val Typography = Typography(
-    body1 = TextStyle(
-        fontFamily = FontFamily.Default,
-        fontWeight = FontWeight.Normal,
-        fontSize = 16.sp
-    )
-)

app/src/main/java/xyz/quaver/pupil/ui/view/FloatingSearchView.kt

@@ -0,0 +1,216 @@
+/*
+ *     Pupil, Hitomi.la viewer for Android
+ *     Copyright (C) 2020  tom5079
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package xyz.quaver.pupil.ui.view
+
+import android.content.Context
+import android.graphics.PorterDuff
+import android.graphics.PorterDuffColorFilter
+import android.graphics.drawable.Animatable
+import android.text.Editable
+import android.text.TextWatcher
+import android.util.AttributeSet
+import android.util.Log
+import android.view.LayoutInflater
+import android.view.View
+import android.view.inputmethod.EditorInfo
+import android.widget.ImageView
+import android.widget.LinearLayout
+import android.widget.TextView
+import androidx.core.content.ContextCompat
+import androidx.core.content.res.ResourcesCompat
+import androidx.swiperefreshlayout.widget.CircularProgressDrawable
+import androidx.vectordrawable.graphics.drawable.AnimatedVectorDrawableCompat
+import xyz.quaver.floatingsearchview.FloatingSearchView
+import xyz.quaver.floatingsearchview.suggestions.model.SearchSuggestion
+import xyz.quaver.floatingsearchview.util.view.SearchInputView
+import xyz.quaver.pupil.R
+import xyz.quaver.pupil.favoriteTags
+import xyz.quaver.pupil.types.*
+import java.util.*
+
+class FloatingSearchView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null) :
+    FloatingSearchView(context, attrs),
+    FloatingSearchView.OnSearchListener,
+    TextWatcher
+{
+    private val searchInputView = findViewById<SearchInputView>(R.id.search_bar_text)
+
+    var onHistoryDeleteClickedListener: ((String) -> Unit)? = null
+    var onFavoriteHistorySwitchClickListener: (() -> Unit)? = null
+
+    init {
+        searchInputView.imeOptions = EditorInfo.IME_FLAG_NO_EXTRACT_UI or searchInputView.imeOptions
+
+        searchInputView.addTextChangedListener(this)
+        onSearchListener = this
+        onBindSuggestionCallback = { binding, item, itemPosition ->
+            onBindSuggestion(binding.root, binding.leftIcon, binding.body, item, itemPosition)
+        }
+    }
+
+    override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {
+
+    }
+
+    override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
+
+    }
+
+    override fun afterTextChanged(s: Editable?) {
+        s ?: return
+
+        if (s.any { it.isUpperCase() })
+            s.replace(0, s.length, s.toString().toLowerCase(Locale.getDefault()))
+    }
+
+    override fun onSuggestionClicked(searchSuggestion: SearchSuggestion?) {
+        when (searchSuggestion) {
+            is TagSuggestion -> {
+                val tag = "${searchSuggestion.n}:${searchSuggestion.s.replace(Regex("\\s"), "_")}"
+                with(searchInputView.text!!) {
+                    delete(if (lastIndexOf(' ') == -1) 0 else lastIndexOf(' ') + 1, length)
+
+                    if (!this.contains(tag))
+                        append("$tag ")
+                }
+            }
+            is Suggestion -> {
+                with(searchInputView.text!!) {
+                    clear()
+                    append(searchSuggestion.body)
+                }
+            }
+            is FavoriteHistorySwitch -> onFavoriteHistorySwitchClickListener?.invoke()
+        }
+    }
+
+    override fun onSearchAction(currentQuery: String?) {}
+
+    fun onBindSuggestion(
+        suggestionView: View?,
+        leftIcon: ImageView?,
+        textView: TextView?,
+        item: SearchSuggestion?,
+        itemPosition: Int
+    ) {
+      when(item) {
+            is TagSuggestion -> {
+                val tag = "${item.n}:${item.s}"
+
+                leftIcon?.setImageDrawable(
+                    ResourcesCompat.getDrawable(
+                        resources,
+                        when(item.n) {
+                            "female" -> R.drawable.gender_female
+                            "male" -> R.drawable.gender_male
+                            "language" -> R.drawable.translate
+                            "group" -> R.drawable.account_group
+                            "character" -> R.drawable.account_star
+                            "series" -> R.drawable.book_open
+                            "artist" -> R.drawable.brush
+                            else -> R.drawable.tag
+                        },
+                        context.theme)
+                )
+
+                with(suggestionView?.findViewById<ImageView>(R.id.right_icon)) {
+                    this ?: return@with
+
+                    if (favoriteTags.contains(Tag.parse(tag)))
+                        setImageResource(R.drawable.ic_star_filled)
+                    else
+                        setImageResource(R.drawable.ic_star_empty)
+
+                    visibility = View.VISIBLE
+                    rotation = 0f
+
+                    isEnabled = true
+                    isClickable = true
+
+                    setOnClickListener {
+                        val tag = Tag.parse(tag)
+
+                        if (favoriteTags.contains(tag)) {
+                            setImageResource(R.drawable.ic_star_empty)
+                            favoriteTags.remove(tag)
+                        }
+                        else {
+                            setImageDrawable(
+                                AnimatedVectorDrawableCompat.create(context,
+                                    R.drawable.avd_star
+                                ))
+                            (drawable as Animatable).start()
+
+                            favoriteTags.add(tag)
+                        }
+                    }
+                }
+
+                if (item.t > 0) {
+                    (suggestionView as? LinearLayout)?.let {
+                        val count = it.findViewById<TextView>(R.id.count)
+                        if (count == null)
+                            it.addView(
+                                LayoutInflater.from(context).inflate(R.layout.suggestion_count, suggestionView, false)
+                                    .apply {
+                                        this as TextView
+
+                                        text = item.t.toString()
+                                    }, 2
+                            )
+                        else
+                            count.text = item.t.toString()
+                    }
+                }
+            }
+            is FavoriteHistorySwitch -> {
+                leftIcon?.setImageDrawable(ResourcesCompat.getDrawable(resources, R.drawable.swap_horizontal, context.theme))
+            }
+            is Suggestion -> {
+                leftIcon?.setImageDrawable(ResourcesCompat.getDrawable(resources, R.drawable.history, context.theme))
+
+                with(suggestionView?.findViewById<ImageView>(R.id.right_icon)) {
+                    this ?: return@with
+
+                    setImageDrawable(ResourcesCompat.getDrawable(resources, R.drawable.delete, context.theme))
+
+                    visibility = View.VISIBLE
+                    rotation = 0f
+
+                    isEnabled = true
+                    isClickable = true
+
+                    setOnClickListener {
+                        onHistoryDeleteClickedListener?.invoke(item.body)
+                    }
+                }
+            }
+            is LoadingSuggestion -> {
+                leftIcon?.setImageDrawable(CircularProgressDrawable(context).also {
+                    it.setStyle(CircularProgressDrawable.DEFAULT)
+                    it.colorFilter = PorterDuffColorFilter(ContextCompat.getColor(context, R.color.colorAccent), PorterDuff.Mode.SRC_IN)
+                    it.start()
+                })
+            }
+            is NoResultSuggestion -> {
+                leftIcon?.setImageDrawable(ResourcesCompat.getDrawable(resources, R.drawable.close, context.theme))
+            }
+        }
+    }
+}

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);
+    }
+}

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)
+    }
+
+}

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)
+    }
+
+}

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()
+    }
+
+}

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()
+    }
+}

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()
+    }
+}

app/src/main/java/xyz/quaver/pupil/util/PupilHttpClient.kt

@@ -1,156 +0,0 @@
-/*
- *     Pupil, Hitomi.la viewer for Android
- *     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
- *     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 androidx.compose.ui.res.stringArrayResource
-import io.ktor.client.*
-import io.ktor.client.call.*
-import io.ktor.client.engine.*
-import io.ktor.client.plugins.contentnegotiation.*
-import io.ktor.client.request.*
-import io.ktor.client.statement.*
-import io.ktor.http.*
-import io.ktor.serialization.kotlinx.json.*
-import io.ktor.utils.io.core.*
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.flow.flow
-import kotlinx.coroutines.flow.flowOn
-import kotlinx.coroutines.withContext
-import kotlinx.serialization.Serializable
-import kotlinx.serialization.json.*
-import java.io.File
-import java.util.*
-
-@Serializable
-data class RemoteSourceInfo(
-    val projectName: String,
-    val name: String,
-    val version: String
-)
-
-class Release(
-    val version: String,
-    val apkUrl: String,
-    val releaseNotes: Map<Locale, String>
-)
-
-private val localeMap = mapOf(
-    "한국어" to Locale.KOREAN,
-    "日本語" to Locale.JAPANESE,
-    "English" to Locale.ENGLISH
-)
-
-class PupilHttpClient(engine: HttpClientEngine) {
-    private val httpClient = HttpClient(engine) {
-        install(ContentNegotiation) {
-            json()
-        }
-    }
-
-    /**
-     * Fetch a list of available sources from PupilSources repository.
-     * Returns empty map when exception occurs
-     */
-    suspend fun getRemoteSourceList(): Map<String, RemoteSourceInfo> = withContext(Dispatchers.IO) {
-        runCatching {
-            httpClient.get("https://tom5079.github.io/PupilSources/versions.json").body<Map<String, RemoteSourceInfo>>()
-        }.getOrDefault(emptyMap())
-    }
-
-    /**
-     * Downloads specific file from :url to :dest.
-     * Returns flow that emits progress.
-     * when value emitted by flow {
-     *   in 0f .. 1f        -> downloading
-     *   POSITIVE_INFINITY  -> download finised
-     *   NEGATIVE_INFINITY  -> exception occured
-     * }
-     */
-    fun downloadFile(url: String, dest: File) = flow {
-        runCatching {
-            httpClient.prepareGet(url).execute { response ->
-                val channel = response.bodyAsChannel()
-                val contentLength = response.contentLength() ?: -1
-                var readBytes = 0f
-
-                dest.outputStream().use { outputStream ->
-                    while (!channel.isClosedForRead) {
-                        val packet = channel.readRemaining(DEFAULT_BUFFER_SIZE.toLong())
-                        while (!packet.isEmpty) {
-                            val bytes = packet.readBytes()
-                            outputStream.write(bytes)
-
-                            readBytes += bytes.size
-                            emit(readBytes / contentLength)
-                        }
-                    }
-                }
-            }
-
-            emit(Float.POSITIVE_INFINITY)
-        }.onFailure {
-            emit(Float.NEGATIVE_INFINITY)
-        }
-    }.flowOn(Dispatchers.IO)
-
-    /**
-     * Latest application release info from Github API.
-     * Returns null when exception occurs.
-     */
-    suspend fun latestRelease(beta: Boolean = true): Release? = withContext(Dispatchers.IO) {
-        runCatching {
-            val releases = Json.parseToJsonElement(
-                httpClient.get("https://api.github.com/repos/tom5079/Pupil/releases").bodyAsText()
-            ).jsonArray
-
-            val latestRelease = releases.first { release ->
-                beta || !release.jsonObject["prerelease"]!!.jsonPrimitive.boolean
-            }.jsonObject
-
-            val version = latestRelease["tag_name"]!!.jsonPrimitive.content
-
-            val apkUrl = latestRelease["assets"]!!.jsonArray.first { asset ->
-                val name = asset.jsonObject["name"]!!.jsonPrimitive.content
-                name.startsWith("Pupil-v") && name.endsWith(".apk")
-            }.jsonObject["browser_download_url"]!!.jsonPrimitive.content
-
-            val releaseNotes: Map<Locale, String> = buildMap {
-                val body = latestRelease["body"]!!.jsonPrimitive.content
-
-                var locale: Locale? = null
-                val stringBuilder = StringBuilder()
-                body.lineSequence().forEach { line ->
-                    localeMap[line.drop(3)]?.let { newLocale ->
-                        if (locale != null) {
-                            put(locale!!, stringBuilder.deleteCharAt(stringBuilder.length-1).toString())
-                            stringBuilder.clear()
-                        }
-                        locale = newLocale
-                        return@forEach
-                    }
-
-                    if (locale != null) stringBuilder.appendLine(line)
-                }
-                put(locale!!, stringBuilder.deleteCharAt(stringBuilder.length-1).toString())
-            }
-
-            Release(version, apkUrl, releaseNotes)
-        }.getOrNull()
-    }
-}

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()
+    }
+
+}

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
+}

app/src/main/java/xyz/quaver/pupil/util/downloader/Cache.kt

@@ -0,0 +1,285 @@
+/*
+ *     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 android.util.Log
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import kotlinx.coroutines.withContext
+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.GalleryBlock
+import xyz.quaver.pupil.hitomi.GalleryInfo
+import xyz.quaver.pupil.hitomi.getGalleryBlock
+import xyz.quaver.pupil.hitomi.getGalleryInfo
+import xyz.quaver.pupil.userAgent
+import java.io.File
+import java.io.IOException
+import java.io.InputStream
+import java.util.concurrent.ConcurrentHashMap
+
+@Serializable
+data class OldGalleryBlock(
+    val code: String,
+    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>
+)
+
+@Serializable
+data class OldReader(val code: String, val galleryInfo: GalleryInfo)
+
+@Serializable
+data class OldMetadata(
+    var galleryBlock: OldGalleryBlock? = 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?.let { galleryBlock -> GalleryBlock(
+        galleryBlock.id,
+        galleryBlock.galleryUrl,
+        galleryBlock.thumbnails,
+        galleryBlock.title,
+        galleryBlock.artists,
+        galleryBlock.series,
+        galleryBlock.type,
+        galleryBlock.language,
+        galleryBlock.relatedTags) },
+        old.reader?.galleryInfo,
+        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/$galleryID").deleteRecursively()
+            instances.remove(galleryID)
+        }
+    }
+
+    init {
+        cacheFolder.mkdirs()
+    }
+
+    var metadata = kotlin.runCatching {
+        findFile(".metadata")?.readText()?.let { metadata ->
+            kotlin.runCatching {
+                Json.decodeFromString<Metadata>(metadata)
+            }.getOrElse {
+                Metadata(Json.decodeFromString<OldMetadata>(metadata))
+            }
+        }
+    }.getOrNull() ?: Metadata()
+
+    val downloadFolder: FileX?
+        get() = DownloadManager.getInstance(this).getDownloadFolder(galleryID)
+
+    val cacheFolder: FileX
+        get() = FileX(this, cacheDir, "imageCache/$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")
+    fun putImage(index: Int, fileName: String, data: InputStream) {
+        val file = cacheFolder.getChild(fileName)
+
+        if (!file.exists())
+            file.createNewFile()
+        file.outputStream()?.use {
+            data.copyTo(it)
+        }
+        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()
+        }
+    }
+}

app/src/main/java/xyz/quaver/pupil/util/downloader/DownloadManager.kt

@@ -0,0 +1,128 @@
+/*
+ *     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 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.*
+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
+            }
+        }.invoke()
+
+    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 = {
+                    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 ?: {
+                        file.createNewFile()
+                        mutableMapOf<Int, String>()
+                    }.invoke()
+                }.invoke()
+            }
+
+            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)
+
+        if (folder.exists()) return@launch
+
+        folder.mkdir()
+
+        downloadFolderMap[galleryID] = folder.name
+
+        downloadFolder.getChild(".download").let { if (!it.exists()) it.createNewFile() }
+        downloadFolder.getChild(".download").writeText(Json.encodeToString(downloadFolderMap))
+    }
+
+    @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))
+            }
+        }
+    }
+}

app/src/main/java/xyz/quaver/pupil/util/file.kt

@@ -0,0 +1,67 @@
+/*
+ *     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.content.Context
+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
+
+val mutex = Mutex()
+fun cleanCache(context: Context) = CoroutineScope(Dispatchers.IO).launch {
+    if (mutex.isLocked) return@launch
+
+    mutex.withLock {
+        val cacheFolder = File(context.cacheDir, "imageCache")
+        val downloadManager = DownloadManager.getInstance(context)
+
+        val limit = (Preferences.get<String>("cache_limit").toLongOrNull() ?: 0L)*1024*1024*1024
+
+        if (limit == 0L) return@withLock
+
+        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)
+                    }
+                }
+            }
+    }
+}

app/src/main/java/xyz/quaver/pupil/util/lock.kt

@@ -0,0 +1,124 @@
+/*
+ *     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.content.Context
+import android.content.ContextWrapper
+import androidx.core.content.ContextCompat
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.Json
+import java.io.File
+import java.security.MessageDigest
+
+fun hash(password: String): String {
+    val bytes = password.toByteArray()
+    val md = MessageDigest.getInstance("SHA-256")
+
+    return md.digest(bytes).fold("") { str, it -> str + "%02x".format(it) }
+}
+
+// Ret1: SHA-256 Hash
+// Ret2: Hash salt
+fun hashWithSalt(password: String): Pair<String, String> {
+    val salt = (0 until 12).map { source.random() }.joinToString()
+
+    return Pair(hash(password+salt), salt)
+}
+
+const val source = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
+
+@Serializable
+data class Lock(val type: Type, val hash: String, val salt: String) {
+
+    enum class Type {
+        PATTERN,
+        PIN,
+        PASSWORD
+    }
+
+    companion object {
+        fun generate(type: Type, password: String): Lock {
+            val (hash, salt) = hashWithSalt(password)
+            return Lock(type, hash, salt)
+        }
+    }
+
+    fun match(password: String): Boolean {
+        return hash(password+salt) == hash
+    }
+}
+
+class LockManager(base: Context): ContextWrapper(base) {
+
+    var locks: ArrayList<Lock>? = null
+
+    init {
+        load()
+    }
+
+    private fun load() {
+        val lock = File(ContextCompat.getDataDir(this), "lock.json")
+
+        if (!lock.exists()) {
+            lock.createNewFile()
+            lock.writeText("[]")
+        }
+
+        locks = Json.decodeFromString(lock.readText())
+    }
+
+    private fun save() {
+        val lock = File(ContextCompat.getDataDir(this), "lock.json")
+
+        if (!lock.exists())
+            lock.createNewFile()
+
+        lock.writeText(Json.encodeToString(locks?.toList() ?: listOf()))
+    }
+
+    fun add(lock: Lock) {
+        remove(lock.type)
+        locks?.add(lock)
+        save()
+    }
+
+    fun remove(type: Lock.Type) {
+        locks?.removeAll { it.type == type }
+        save()
+    }
+
+    fun check(password: String): Boolean? {
+        return locks?.any {
+            it.match(password)
+        }
+    }
+
+    fun isEmpty(): Boolean {
+        return locks.isNullOrEmpty()
+    }
+
+    fun isNotEmpty(): Boolean = !isEmpty()
+
+    fun contains(type: Lock.Type): Boolean {
+        return locks?.any { it.type == type } ?: false
+    }
+
+}

app/src/main/java/xyz/quaver/pupil/util/misc.kt

@@ -0,0 +1,138 @@
+/*
+ *     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.annotation.SuppressLint
+import com.google.firebase.crashlytics.FirebaseCrashlytics
+import kotlinx.serialization.json.*
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import xyz.quaver.pupil.hitomi.GalleryBlock
+import xyz.quaver.pupil.hitomi.GalleryInfo
+import xyz.quaver.pupil.hitomi.getReferer
+import xyz.quaver.pupil.hitomi.imageUrlFromImage
+import java.util.*
+import kotlin.collections.ArrayList
+
+@OptIn(ExperimentalStdlibApi::class)
+fun String.wordCapitalize() : String {
+    val result = ArrayList<String>()
+
+    @SuppressLint("DefaultLocale")
+    for (word in this.split(" "))
+        result.add(word.replaceFirstChar { if (it.isLowerCase()) it.titlecase(Locale.US) else it.toString() })
+
+    return result.joinToString(" ")
+}
+
+private val suffix = listOf(
+    "B",
+    "kB",
+    "MB",
+    "GB",
+    "TB" //really?
+)
+
+fun byteToString(byte: Long, precision : Int = 1) : String {
+    var size = byte.toDouble(); var suffixIndex = 0
+
+    while (size >= 1024) {
+        size /= 1024
+        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 { artists.joinToString() }
+    // 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 ?: 0
+    val lowQuality = Preferences["low_quality", true]
+
+    return this.files.map {
+        Request.Builder()
+            .url(
+                runCatching {
+                    imageUrlFromImage(galleryID, it, !lowQuality)
+                }
+                .onFailure {
+                    FirebaseCrashlytics.getInstance().recordException(it)
+                }
+                .getOrDefault("https://a/")
+            )
+            .header("Referer", "https://hitomi.la/")
+            .header("User-Agent", "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36")
+    }
+}
+
+fun String.ellipsize(n: Int): String =
+    if (this.length > n)
+        this.slice(0 until n) + "…"
+    else
+        this
+
+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

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))])

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())
+}

app/src/main/java/xyz/quaver/pupil/util/update.kt

@@ -0,0 +1,201 @@
+/*
+ *     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.DownloadManager
+import android.content.Context
+import android.net.Uri
+import android.webkit.URLUtil
+import androidx.appcompat.app.AlertDialog
+import androidx.preference.PreferenceManager
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.json.*
+import okhttp3.Call
+import okhttp3.Callback
+import okhttp3.Request
+import okhttp3.Response
+import ru.noties.markwon.Markwon
+import xyz.quaver.pupil.BuildConfig
+import xyz.quaver.pupil.R
+import xyz.quaver.pupil.client
+import xyz.quaver.pupil.favorites
+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.parseToJsonElement(it).jsonArray
+        }
+    } catch (e: Exception) {
+        JsonArray(emptyList())
+    }
+}
+
+fun checkUpdate(url: String) : JsonObject? {
+    val releases = getReleases(url)
+
+    if (releases.isEmpty())
+        return null
+
+    return releases.firstOrNull {
+        Preferences["beta"] || it.jsonObject["prerelease"]?.jsonPrimitive?.booleanOrNull == false
+    }?.let {
+        if (it.jsonObject["tag_name"]?.jsonPrimitive?.contentOrNull == BuildConfig.VERSION_NAME)
+            null
+        else
+            it.jsonObject
+    }
+}
+
+fun getApkUrl(releases: JsonObject) : String? {
+    return releases["assets"]?.jsonArray?.firstOrNull {
+        Regex("Pupil-v.+\\.apk").matches(it.jsonObject["name"]?.jsonPrimitive?.contentOrNull ?: "")
+    }.let {
+        it?.jsonObject?.get("browser_download_url")?.jsonPrimitive?.contentOrNull
+    }
+}
+
+fun checkUpdate(context: Context, force: Boolean = false) {
+
+    val preferences = PreferenceManager.getDefaultSharedPreferences(context)
+    val ignoreUpdateUntil = preferences.getLong("ignore_update_until", 0)
+
+    if (!force && ignoreUpdateUntil > System.currentTimeMillis())
+        return
+
+    fun extractReleaseNote(update: JsonObject, locale: Locale) : String {
+        val markdown = update["body"]!!.jsonPrimitive.content
+
+        val target = when(locale.language) {
+            "ko" -> "한국어"
+            "ja" -> "日本語"
+            else -> "English"
+        }
+
+        val releaseNote = Regex("^# Release Note.+$")
+        val language = Regex("^## $target$")
+        val end = Regex("^#.+$")
+
+        var releaseNoteFlag = false
+        var languageFlag = false
+
+        val result = StringBuilder()
+
+        for(line in markdown.lines()) {
+            if (releaseNote.matches(line)) {
+                releaseNoteFlag = true
+                continue
+            }
+
+            if (releaseNoteFlag) {
+                if (language.matches(line)) {
+                    languageFlag = true
+                    continue
+                }
+            }
+
+            if (languageFlag) {
+                if (end.matches(line))
+                    break
+
+                result.append(line+"\n")
+            }
+        }
+
+        return context.getString(R.string.update_release_note, update["tag_name"]?.jsonPrimitive?.contentOrNull, result.toString())
+    }
+
+    CoroutineScope(Dispatchers.Default).launch {
+        val update =
+            checkUpdate(context.getString(R.string.release_url)) ?: return@launch
+
+        val url = getApkUrl(update) ?: return@launch
+
+        val dialog = AlertDialog.Builder(context).apply {
+            setTitle(R.string.update_title)
+            val msg = extractReleaseNote(update, Locale.getDefault())
+            setMessage(Markwon.create(context).toMarkdown(msg))
+            setPositiveButton(android.R.string.ok) { _, _ ->
+                val downloadManager = context.getSystemService(Context.DOWNLOAD_SERVICE) as DownloadManager
+
+                //Cancel any download queued before
+
+                val id: Long = Preferences["update_download_id"]
+
+                if (id != -1L)
+                    downloadManager.remove(id)
+
+                val target = File(context.getExternalFilesDir(null), "Pupil.apk").also {
+                    it.delete()
+                }
+
+                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.cancel else R.string.ignore) { _, _ ->
+                if (!force)
+                    preferences.edit()
+                        .putLong("ignore_update_until", System.currentTimeMillis() + 604800000)
+                        .apply()
+            }
+        }
+
+        launch(Dispatchers.Main) {
+            dialog.show()
+        }
+    }
+}
+
+fun restore(url: String, onFailure: ((Throwable) -> Unit)? = null, onSuccess: ((List<Int>) -> Unit)? = null) {
+    if (!URLUtil.isValidUrl(url)) {
+        onFailure?.invoke(IllegalArgumentException())
+        return
+    }
+
+    val request = Request.Builder()
+        .url(url)
+        .get()
+        .build()
+
+    client.newCall(request).enqueue(object: Callback {
+        override fun onFailure(call: Call, e: IOException) {
+            onFailure?.invoke(e)
+        }
+
+        override fun onResponse(call: Call, response: Response) {
+            kotlin.runCatching {
+                Json.decodeFromString<List<Int>>(response.also { if (it.code() != 200) throw IOException() }.body().use { it?.string() } ?: "[]").let {
+                    favorites.addAll(it)
+                    onSuccess?.invoke(it)
+                }
+            }.onFailure { onFailure?.invoke(it) }
+        }
+    })
+}

app/src/main/java/xyz/quaver/pupil/util/util.kt

@@ -1,38 +0,0 @@
-/*
- *     Pupil, Hitomi.la viewer for Android
- *     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
- *     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 android.content.Intent
-import android.webkit.MimeTypeMap
-import androidx.core.content.FileProvider
-import java.io.File
-
-fun Context.launchApkInstaller(file: File) {
-    val uri = FileProvider.getUriForFile(this, "$packageName.fileprovider", file)
-
-    val intent = 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"))
-    }
-
-    startActivity(intent)
-}

app/src/main/res/anim/shake.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~     Pupil, Hitomi.la viewer for Android
+  ~     Copyright (C) 2020  tom5079
+  ~
+  ~     This program is free software: you can redistribute it and/or modify
+  ~     it under the terms of the GNU General Public License as published by
+  ~     the Free Software Foundation, either version 3 of the License, or
+  ~     (at your option) any later version.
+  ~
+  ~     This program is distributed in the hope that it will be useful,
+  ~     but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~     GNU General Public License for more details.
+  ~
+  ~     You should have received a copy of the GNU General Public License
+  ~     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+  -->
+
+<translate xmlns:android="http://schemas.android.com/apk/res/android"
+    android:duration="300"
+    android:fromXDelta="0"
+    android:interpolator="@anim/shake_cycle"
+    android:toXDelta="10" />

app/src/main/res/anim/shake_cycle.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~     Pupil, Hitomi.la viewer for Android
+  ~     Copyright (C) 2020  tom5079
+  ~
+  ~     This program is free software: you can redistribute it and/or modify
+  ~     it under the terms of the GNU General Public License as published by
+  ~     the Free Software Foundation, either version 3 of the License, or
+  ~     (at your option) any later version.
+  ~
+  ~     This program is distributed in the hope that it will be useful,
+  ~     but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~     GNU General Public License for more details.
+  ~
+  ~     You should have received a copy of the GNU General Public License
+  ~     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+  -->
+
+<cycleInterpolator xmlns:android="http://schemas.android.com/apk/res/android"
+    android:cycles="3" />

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>