Update README.md

Fixes concurrentmodificationexception

.gitignore

@@ -16,4 +16,5 @@
 /gh-pages
 
 #Private files
-**/google-services.json
+**/google-services.json
+**/credentials.json

.idea/codeStyles/Project.xml

@@ -2,6 +2,22 @@
   <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">

.idea/compiler.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="1.8" />
+  </component>
+</project>

.idea/copyright/Apache.xml

@@ -1,6 +0,0 @@
-<component name="CopyrightManager">
-  <copyright>
-    <option name="notice" value="   Copyright &amp;#36;today.year tom5079&#10;&#10;   Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);&#10;   you may not use this file except in compliance with the License.&#10;   You may obtain a copy of the License at&#10;&#10;     http://www.apache.org/licenses/LICENSE-2.0&#10;&#10;   Unless required by applicable law or agreed to in writing, software&#10;   distributed under the License is distributed on an &quot;AS IS&quot; BASIS,&#10;   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.&#10;   See the License for the specific language governing permissions and&#10;   limitations under the License." />
-    <option name="myName" value="Apache" />
-  </copyright>
-</component>

.idea/copyright/profiles_settings.xml

@@ -2,7 +2,6 @@
   <settings>
     <module2copyright>
       <element module="Pupil" copyright="GPL" />
-      <element module="libpupil" copyright="Apache" />
     </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/gradle.xml

@@ -11,7 +11,6 @@
           <set>
             <option value="$PROJECT_DIR$" />
             <option value="$PROJECT_DIR$/app" />
-            <option value="$PROJECT_DIR$/libpupil" />
           </set>
         </option>
         <option name="resolveModulePerSourceSet" value="false" />

.idea/jarRepositories.xml

@@ -51,5 +51,25 @@
       <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>
   </component>
 </project>

.idea/misc.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">

.idea/scopes/libpupil.xml

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

README.md

@@ -1,18 +1,12 @@
-# Pupil
-
 ![Banner](https://github.com/tom5079/Pupil/blob/gh-pages/assets/images/pupil-banner.png?raw=true)
 *Pupil, Hitomi.la viewer for Android*  
 
+![](https://img.shields.io/github/downloads/tom5079/Pupil/total)  
+[![](https://img.shields.io/github/downloads/tom5079/Pupil/latest/Pupil-v5.1.4.apk?color=%234fc3f7&label=DOWNLOAD%20APP&style=for-the-badge)](https://github.com/tom5079/Pupil/releases/download/5.1.4/Pupil-v5.1.4.apk)  
 [![](https://discordapp.com/api/guilds/610452916612104194/embed.png?style=banner2)](https://discord.gg/Stj4b5v)  
 
-# Screenshot
-![Main Screen](https://github.com/tom5079/Pupil/blob/gh-pages/assets/images/main-screenshot.png?raw=true)
-*Main Screen*
-
-![Reader Screen](https://github.com/tom5079/Pupil/blob/gh-pages/assets/images/reader-screenshot.png?raw=true)
-*Reader Screen*
-
-Images are censored to be SFW
+# Features
+![Main Screen](https://github.com/tom5079/Pupil/blob/gh-pages/assets/images/main-screenshot.jpg?raw=true)
 
 # Installation
 
@@ -26,4 +20,7 @@ or Build app yourself
 
 # Contribution
 
-Any kind of contribution is appriciated. Feel free to leave PR! 
+Any kind of contribution is appriciated. Feel free to leave PR!
+
+## Tag Translation
+Head over to [tags branch](https://github.com/tom5079/Pupil/tree/tags)

app/build.gradle

@@ -1,98 +1,138 @@
-apply plugin: 'com.android.application'
-apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-kapt'
-apply plugin: 'kotlin-android-extensions'
-apply plugin: 'kotlinx-serialization'
+apply plugin: "com.android.application"
+apply plugin: "kotlin-android"
+apply plugin: "kotlin-kapt"
+apply plugin: "kotlin-android-extensions"
+apply plugin: "kotlinx-serialization"
+apply plugin: "com.google.android.gms.oss-licenses-plugin"
 
 if (file("google-services.json").exists() && file("src/debug/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'
+    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 29
+    compileSdkVersion 30
     defaultConfig {
         applicationId "xyz.quaver.pupil"
         minSdkVersion 16
-        targetSdkVersion 29
-        versionCode 57
-        versionName "4.20-hotfix2"
+        targetSdkVersion 30
+        versionCode 63
+        versionName "5.1.4"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
-        multiDexEnabled true
         vectorDrawables.useSupportLibrary = true
     }
     buildTypes {
         debug {
+            minifyEnabled true
+            shrinkResources true
+
             debuggable true
             applicationIdSuffix ".debug"
             versionNameSuffix "-DEBUG"
 
-            buildConfigField('Boolean', 'CENSOR', 'false')
-            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+            proguardFiles getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro"
+
+            ext.enableCrashlytics = false
+            ext.alwaysUpdateBuildId = false
         }
         release {
-            buildConfigField('Boolean', 'CENSOR', 'false')
-            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+            minifyEnabled true
+            shrinkResources true
+
+            proguardFiles getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro"
         }
     }
     kotlinOptions {
-        freeCompilerArgs += '-Xuse-experimental=kotlin.Experimental'
+        jvmTarget = JavaVersion.VERSION_1_8.toString()
+        freeCompilerArgs += "-Xuse-experimental=kotlin.Experimental"
     }
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
-    buildToolsVersion = '29.0.3'
+    buildToolsVersion = "29.0.3"
 }
 
 dependencies {
-    def markwonVersion = '3.1.0'
-
-    implementation fileTree(dir: 'libs', include: ['*.jar', '*.aar'])
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
-    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.7"
-    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.7"
-    implementation "org.jetbrains.kotlinx:kotlinx-serialization-runtime:0.20.0"
-    implementation 'androidx.appcompat:appcompat:1.1.0'
-    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
-    implementation 'androidx.preference:preference:1.1.1'
-    implementation 'androidx.gridlayout:gridlayout:1.0.0'
+    implementation fileTree(dir: "libs", include: ["*.jar", "*.aar"])
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.9"
+    implementation "org.jetbrains.kotlinx:kotlinx-serialization-json:1.0.0-RC2"
+    
+    implementation "androidx.appcompat:appcompat:1.2.0"
+    implementation "androidx.activity:activity-ktx:1.2.0-beta01"
+    implementation "androidx.fragment:fragment-ktx:1.3.0-beta01"
+    implementation "androidx.preference:preference:1.1.1"
+    implementation "androidx.constraintlayout:constraintlayout:2.0.2"
+    implementation "androidx.gridlayout:gridlayout:1.0.0"
     implementation "androidx.biometric:biometric:1.0.1"
-    implementation 'androidx.multidex:multidex:2.0.1'
+    implementation "androidx.work:work-runtime-ktx:2.4.0"
+
     implementation "com.daimajia.swipelayout:library:1.2.0@aar"
-    implementation 'com.google.android.material:material:1.3.0-alpha02'
-    implementation 'com.google.firebase:firebase-core:17.4.4'
-    implementation 'com.google.firebase:firebase-analytics:17.4.4'
-    implementation 'com.google.firebase:firebase-crashlytics:17.1.1'
-    implementation 'com.google.firebase:firebase-perf:19.0.8'
-    implementation 'com.github.arimorty:floatingsearchview:2.1.1'
-    implementation 'com.github.clans:fab:1.6.4'
-    implementation 'com.github.bumptech.glide:glide:4.11.0'
-    implementation "com.github.bumptech.glide:okhttp3-integration:4.11.0"
-    implementation 'com.github.bumptech.glide:annotations:4.11.0'
-    annotationProcessor 'com.github.bumptech.glide:compiler:4.11.0'
-    kapt 'com.github.bumptech.glide:compiler:4.11.0'
-    implementation ("com.github.bumptech.glide:recyclerview-integration:4.11.0") {
-        transitive = false
-    }
-    implementation 'com.tbuonomo.andrui:viewpagerdotsindicator:4.1.2'
-    implementation 'net.rdrei.android.dirchooser:library:3.2@aar'
-    implementation 'com.github.chrisbanes:PhotoView:2.3.0'
-    implementation 'com.andrognito.patternlockview:patternlockview:1.0.0'
-    //implementation 'com.andrognito.pinlockview:pinlockview:2.1.0'
-    implementation "ru.noties.markwon:core:${markwonVersion}"
-    testImplementation 'junit:junit:4.13'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
-    androidTestImplementation 'androidx.test:rules:1.2.0'
-    androidTestImplementation 'androidx.test:runner:1.2.0'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
-    implementation project(path: ':libpupil')
+
+    implementation "com.google.android.material:material:1.3.0-alpha03"
+
+    implementation "com.google.firebase:firebase-core:17.5.1"
+    implementation "com.google.firebase:firebase-analytics:17.6.0"
+    implementation "com.google.firebase:firebase-crashlytics:17.2.2"
+    implementation "com.google.firebase:firebase-perf:19.0.9"
+
+    implementation "com.google.android.gms:play-services-oss-licenses:17.0.0"
+    implementation "com.google.android.gms:play-services-mlkit-face-detection:16.1.1"
+
+    implementation "com.github.clans:fab:1.6.4"
+
+    //implementation "com.quiph.ui:recyclerviewfastscroller:0.2.1"
+
+    implementation 'com.github.piasy:BigImageViewer:1.6.7'
+    implementation 'com.github.piasy:FrescoImageLoader:1.6.7'
+    implementation 'com.github.piasy:FrescoImageViewFactory:1.6.7'
+
+    //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 "xyz.quaver:libpupil:1.7.2"
+    implementation "xyz.quaver:documentfilex:0.3.1"
+    implementation "xyz.quaver:floatingsearchview:1.0.7"
+
+    testImplementation "junit:junit:4.13"
+    androidTestImplementation "androidx.test.ext:junit:1.1.2"
+    androidTestImplementation "androidx.test:rules:1.3.0"
+    androidTestImplementation "androidx.test:runner:1.3.0"
+    androidTestImplementation "androidx.test.espresso:espresso-core:3.3.0"
 }
 
 androidExtensions {
     experimental = true
-}
+}

app/proguard-rules.pro

@@ -22,17 +22,14 @@
 
 -dontobfuscate
 
--keep public class * implements com.bumptech.glide.module.GlideModule
--keep class * extends com.bumptech.glide.module.AppGlideModule {
- <init>(...);
+-keepattributes *Annotation*, InnerClasses
+-dontnote kotlinx.serialization.SerializationKt
+-keep,includedescriptorclasses class xyz.quaver.**$$serializer { *; } # <-- change package name to your app's
+-keepclassmembers class xyz.quaver.pupil.** { # <-- change package name to your app's
+    *** Companion;
 }
--keep public enum com.bumptech.glide.load.ImageHeaderParser$** {
-  **[] $VALUES;
-  public *;
+-keepclasseswithmembers class xyz.quaver.pupil.** { # <-- change package name to your app's
+    kotlinx.serialization.KSerializer serializer(...);
 }
--keep class com.bumptech.glide.load.data.ParcelFileDescriptorRewinder$InternalRewinder {
-  *** rewind();
-}
-
--keep public class * extends com.bumptech.glide.module.AppGlideModule
--keep class com.bumptech.glide.GeneratedAppGlideModuleImpl
+-keep class xyz.quaver.pupil.ui.fragment.ManageFavoritesFragment
+-keep class xyz.quaver.pupil.ui.fragment.ManageStorageFragment

app/release/output-metadata.json

@@ -11,8 +11,8 @@
       "type": "SINGLE",
       "filters": [],
       "properties": [],
-      "versionCode": 57,
-      "versionName": "4.20-hotfix2",
+      "versionCode": 63,
+      "versionName": "5.1.4",
       "enabled": true,
       "outputFile": "app-release.apk"
     }

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

@@ -20,25 +20,10 @@
 
 package xyz.quaver.pupil
 
-import android.util.Log
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.platform.app.InstrumentationRegistry
-import androidx.test.rule.ActivityTestRule
-import kotlinx.coroutines.runBlocking
 import org.junit.Test
 import org.junit.runner.RunWith
-import xyz.quaver.hitomi.getGalleryIDsFromNozomi
-import xyz.quaver.hiyobi.cookie
-import xyz.quaver.hiyobi.createImgList
-import xyz.quaver.hiyobi.getReader
-import xyz.quaver.hiyobi.user_agent
-import xyz.quaver.pupil.ui.LockActivity
-import xyz.quaver.pupil.util.download.Cache
-import xyz.quaver.pupil.util.download.DownloadWorker
-import xyz.quaver.pupil.util.getDownloadDirectory
-import java.io.InputStreamReader
-import java.net.URL
-import javax.net.ssl.HttpsURLConnection
 
 /**
  * Instrumented test, which will execute on an Android device.
@@ -53,72 +38,4 @@ class ExampleInstrumentedTest {
         // Context of the app under test.
         val appContext = InstrumentationRegistry.getInstrumentation().targetContext
     }
-
-    @Test
-    fun checkCacheDir() {
-        val activityTestRule = ActivityTestRule(LockActivity::class.java)
-        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
-
-        Runtime.getRuntime().exec("du -hs " + getDownloadDirectory(appContext)).let {
-            InputStreamReader(it.inputStream).readLines().forEach { res ->
-                Log.i("PUPILD", res)
-            }
-        }
-    }
-
-    @Test
-    fun test_nozomi() {
-        val nozomi = getGalleryIDsFromNozomi(null, "index", "all")
-
-        Log.i("PUPILD", nozomi.size.toString())
-    }
-
-    @Test
-    fun test_doSearch() {
-        val reader = getReader( 1426382)
-
-        val data: ByteArray
-
-        with(URL(createImgList(1426382, reader)[0].path).openConnection() as HttpsURLConnection) {
-            setRequestProperty("User-Agent", user_agent)
-            setRequestProperty("Cookie", cookie)
-
-            data = inputStream.readBytes()
-        }
-
-        Log.d("Pupil", data.size.toString())
-    }
-
-    @Test
-    fun test_downloadWorker() {
-        val context = InstrumentationRegistry.getInstrumentation().targetContext
-
-        val galleryID = 515515
-
-        val worker = DownloadWorker.getInstance(context)
-
-        worker.queue.add(galleryID)
-
-        while(worker.progress.indexOfKey(galleryID) < 0 || worker.progress[galleryID] != null) {
-            Log.i("PUPILD", worker.progress[galleryID]?.joinToString(" ") ?: "null")
-
-            if (worker.progress[galleryID]?.all { it.isInfinite() } == true)
-                break
-        }
-
-        Log.i("PUPILD", "DONE!!")
-    }
-
-    @Test
-    fun test_getReaderOrNull() {
-        val context = InstrumentationRegistry.getInstrumentation().targetContext
-
-        val galleryID = 1561552
-
-        runBlocking {
-            Log.i("PUPILD", Cache(context).getReader(galleryID)?.galleryInfo?.title ?: "null")
-        }
-
-        Log.i("PUPILD", Cache(context).getReaderOrNull(galleryID)?.galleryInfo?.title ?: "null")
-    }
 }

app/src/main/AndroidManifest.xml

@@ -6,10 +6,13 @@
     <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"/>
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
-    <uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
+    <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.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.CAMERA" />
 
+    <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"
@@ -20,10 +23,14 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme"
+        android:networkSecurityConfig="@xml/network_security_config"
         tools:replace="android:theme"
-        android:requestLegacyExternalStorage="true"
         tools:ignore="UnusedAttribute">
 
+        <meta-data
+            android:name="com.google.mlkit.vision.DEPENDENCIES"
+            android:value="face" />
+
         <provider
             android:authorities="${applicationId}.provider"
             android:name="androidx.core.content.FileProvider"
@@ -36,9 +43,14 @@
 
         </provider>
 
-        <receiver android:name=".BroadcastReciever" android:exported="true">
+        <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"/>
+                <action android:name="android.intent.action.DOWNLOAD_COMPLETE" />
             </intent-filter>
         </receiver>
 
@@ -204,7 +216,9 @@
         </activity>
         <activity
             android:name=".ui.SettingsActivity"
-            android:label="@string/settings_title" />
+            android:label="@string/settings_title">
+            <tools:validation testUrl="http://ix.io/eer" />
+        </activity>
         <activity
             android:name=".ui.MainActivity"
             android:configChanges="keyboardHidden|orientation|screenSize"
@@ -215,6 +229,17 @@
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </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>

app/src/main/java/com/arlib/floatingsearchview/FloatingSearchViewDayNight.kt

@@ -1,35 +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 com.arlib.floatingsearchview
-
-import android.content.Context
-import android.os.Parcelable
-import android.util.AttributeSet
-
-class FloatingSearchViewDayNight @JvmOverloads constructor(
-    context: Context,
-    attrs: AttributeSet? = null)
-    : FloatingSearchView(context, attrs) {
-
-    // hack to remove color attributes which should not be reused
-    override fun onSaveInstanceState(): Parcelable? {
-        super.onSaveInstanceState()
-        return null
-    }
-}

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

@@ -18,61 +18,109 @@
 
 package xyz.quaver.pupil
 
-import android.app.Notification
-import android.app.NotificationChannel
-import android.app.NotificationManager
+import android.app.*
 import android.content.Context
+import android.content.Intent
+import android.net.Uri
 import android.os.Build
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.core.content.ContextCompat
-import androidx.multidex.MultiDexApplication
 import androidx.preference.PreferenceManager
+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 com.google.firebase.analytics.FirebaseAnalytics
 import com.google.firebase.crashlytics.FirebaseCrashlytics
-import xyz.quaver.proxy
-import xyz.quaver.pupil.util.Histories
-import xyz.quaver.pupil.util.getProxy
+import okhttp3.Interceptor
+import okhttp3.OkHttpClient
+import okhttp3.Response
+import xyz.quaver.io.FileX
+import xyz.quaver.pupil.types.Tag
+import xyz.quaver.pupil.util.*
+import xyz.quaver.pupil.util.downloader.DownloadManager
+import xyz.quaver.setClient
 import java.io.File
 import java.util.*
+import java.util.concurrent.TimeUnit
+import kotlin.reflect.KClass
 
-class Pupil : MultiDexApplication() {
+typealias PupilInterceptor = (Interceptor.Chain) -> Response
 
-    lateinit var histories: Histories
-    lateinit var favorites: Histories
+lateinit var histories: SavedSet<Int>
+    private set
+lateinit var favorites: SavedSet<Int>
+    private set
+lateinit var favoriteTags: SavedSet<Tag>
+    private set
+lateinit var searchHistory: SavedSet<String>
+    private set
 
-    init {
-        AppCompatDelegate.setCompatVectorFromResourcesEnabled(true)
+val interceptors = mutableMapOf<KClass<out Any>, PupilInterceptor>()
+
+lateinit var clientBuilder: OkHttpClient.Builder
+
+var clientHolder: OkHttpClient? = null
+val client: OkHttpClient
+    get() = clientHolder ?: clientBuilder.build().also {
+        clientHolder = it
+        setClient(it)
     }
 
-    override fun onCreate() {
-        val preference = PreferenceManager.getDefaultSharedPreferences(this)
+class Pupil : Application() {
 
-        val userID =
-            if (preference.getString("user_id", "").isNullOrEmpty()) {
-                UUID.randomUUID().toString().also {
-                    preference.edit().putString("user_id", it).apply()
-                }
-            } else
-                preference.getString("user_id", "") ?: ""
+    override fun onCreate() {
+        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)
 
-        proxy = getProxy(this)
+        val proxyInfo = getProxyInfo()
+
+        clientBuilder = OkHttpClient.Builder()
+            .connectTimeout(0, TimeUnit.SECONDS)
+            .readTimeout(0, TimeUnit.SECONDS)
+            .proxyInfo(proxyInfo)
+            .addInterceptor { chain ->
+                val request = chain.request()
+                val tag = request.tag() ?: return@addInterceptor chain.proceed(request)
+
+                interceptors[tag::class]?.invoke(chain) ?: chain.proceed(request)
+            }
 
         try {
-            preference.getString("dl_location", null).also {
-                if (!File(it!!).canWrite())
+            Preferences.get<String>("download_folder").also {
+                if (it.startsWith("content") && Build.VERSION.SDK_INT > 19)
+                    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()
+
+                DownloadManager.getInstance(this).migrate()
             }
         } catch (e: Exception) {
-            preference.edit().remove("dl_location").apply()
+            Preferences.remove("download_folder")
         }
 
-        histories = Histories(File(ContextCompat.getDataDir(this), "histories.json"))
-        favorites = Histories(File(ContextCompat.getDataDir(this), "favorites.json"))
+        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"), "")
 
         if (BuildConfig.DEBUG)
             FirebaseAnalytics.getInstance(this).setAnalyticsCollectionEnabled(false)
@@ -85,6 +133,8 @@ class Pupil : MultiDexApplication() {
             e.printStackTrace()
         }
 
+        BigImageViewer.initialize(FrescoImageLoader.with(this))
+
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
             val manager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
 
@@ -95,6 +145,13 @@ class Pupil : MultiDexApplication() {
                 lockscreenVisibility = Notification.VISIBILITY_SECRET
             })
 
+            manager.createNotificationChannel(NotificationChannel("downloader", getString(R.string.channel_downloader), NotificationManager.IMPORTANCE_LOW).apply {
+                description = getString(R.string.channel_downloader_description)
+                enableLights(false)
+                enableVibration(false)
+                lockscreenVisibility = Notification.VISIBILITY_SECRET
+            })
+
             manager.createNotificationChannel(NotificationChannel("update", getString(R.string.channel_update), NotificationManager.IMPORTANCE_HIGH).apply {
                 description = getString(R.string.channel_update_description)
                 enableLights(true)
@@ -102,7 +159,7 @@ class Pupil : MultiDexApplication() {
                 lockscreenVisibility = Notification.VISIBILITY_SECRET
             })
 
-            manager.createNotificationChannel(NotificationChannel("import", getString(R.string.channel_update), NotificationManager.IMPORTANCE_HIGH).apply {
+            manager.createNotificationChannel(NotificationChannel("import", getString(R.string.channel_update), NotificationManager.IMPORTANCE_LOW).apply {
                 description = getString(R.string.channel_update_description)
                 enableLights(false)
                 enableVibration(false)
@@ -110,8 +167,7 @@ class Pupil : MultiDexApplication() {
             })
         }
 
-        AppCompatDelegate.setCompatVectorFromResourcesEnabled(true)
-        AppCompatDelegate.setDefaultNightMode(when (preference.getBoolean("dark_mode", false)) {
+        AppCompatDelegate.setDefaultNightMode(when (Preferences.get<Boolean>("dark_mode")) {
             true -> AppCompatDelegate.MODE_NIGHT_YES
             false -> AppCompatDelegate.MODE_NIGHT_NO
         })

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

@@ -1,42 +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
-
-import android.content.Context
-import com.bumptech.glide.Glide
-import com.bumptech.glide.Registry
-import com.bumptech.glide.annotation.GlideModule
-import com.bumptech.glide.integration.okhttp3.OkHttpUrlLoader
-import com.bumptech.glide.load.model.GlideUrl
-import com.bumptech.glide.module.AppGlideModule
-import xyz.quaver.pupil.util.download.DownloadWorker
-import java.io.InputStream
-
-@GlideModule
-class PupilGlideModule : AppGlideModule() {
-
-    override fun registerComponents(context: Context, glide: Glide, registry: Registry) {
-        registry.append(
-            GlideUrl::class.java,
-            InputStream::class.java,
-            OkHttpUrlLoader.Factory(DownloadWorker.getInstance(context).client)
-        )
-    }
-
-}

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

@@ -20,7 +20,6 @@ package xyz.quaver.pupil.adapters
 
 import android.content.Context
 import android.graphics.drawable.Drawable
-import android.util.Base64
 import android.util.SparseBooleanArray
 import android.view.LayoutInflater
 import android.view.View
@@ -28,36 +27,29 @@ import android.view.ViewGroup
 import android.widget.LinearLayout
 import androidx.cardview.widget.CardView
 import androidx.core.content.ContextCompat
-import androidx.preference.PreferenceManager
 import androidx.recyclerview.widget.RecyclerView
-import androidx.swiperefreshlayout.widget.CircularProgressDrawable
 import androidx.vectordrawable.graphics.drawable.Animatable2Compat
 import androidx.vectordrawable.graphics.drawable.AnimatedVectorDrawableCompat
-import com.bumptech.glide.RequestManager
-import com.bumptech.glide.load.engine.DiskCacheStrategy
 import com.daimajia.swipe.SwipeLayout
 import com.daimajia.swipe.adapters.RecyclerSwipeAdapter
 import com.daimajia.swipe.interfaces.SwipeAdapterInterface
-import com.google.android.material.chip.Chip
+import com.github.piasy.biv.loader.ImageLoader
 import kotlinx.android.synthetic.main.item_galleryblock.view.*
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.launch
-import kotlinx.coroutines.withContext
-import xyz.quaver.hitomi.GalleryBlock
+import kotlinx.coroutines.*
+import xyz.quaver.hitomi.getGallery
 import xyz.quaver.hitomi.getReader
-import xyz.quaver.pupil.BuildConfig
-import xyz.quaver.pupil.Pupil
+import xyz.quaver.io.util.getChild
 import xyz.quaver.pupil.R
+import xyz.quaver.pupil.favoriteTags
+import xyz.quaver.pupil.favorites
 import xyz.quaver.pupil.types.Tag
-import xyz.quaver.pupil.util.Histories
-import xyz.quaver.pupil.util.download.Cache
+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.util.*
-import kotlin.collections.ArrayList
-import kotlin.concurrent.schedule
+import java.io.File
 
-class GalleryBlockAdapter(private val glide: RequestManager, private val galleries: List<GalleryBlock>) : RecyclerSwipeAdapter<RecyclerView.ViewHolder>(), SwipeAdapterInterface {
+class GalleryBlockAdapter(private val galleries: List<Int>) : RecyclerSwipeAdapter<RecyclerView.ViewHolder>(), SwipeAdapterInterface {
 
     enum class ViewType {
         NEXT,
@@ -65,43 +57,61 @@ class GalleryBlockAdapter(private val glide: RequestManager, private val galleri
         PREV
     }
 
-    private lateinit var favorites: Histories
-
-    val timer = Timer()
-
-    var isThin = false
+    var updateAll = true
+    var thin: Boolean = Preferences["thin"]
 
     inner class GalleryViewHolder(val view: View) : RecyclerView.ViewHolder(view) {
-        var timerTask: TimerTask? = null
+        private var galleryID: Int = 0
 
-        private fun updateProgress(context: Context, galleryID: Int) {
-            val reader = Cache(context).getReaderOrNull(galleryID)
+        init {
+            CoroutineScope(Dispatchers.Main).launch {
+                while (updateAll) {
+                    updateProgress(view.context)
+                    delay(1000)
+                }
+            }
+        }
+
+        private fun updateProgress(context: Context) {
+            val cache = Cache.getInstance(context, galleryID)
 
             CoroutineScope(Dispatchers.Main).launch {
-                if (reader == null || PreferenceManager.getDefaultSharedPreferences(context).getBoolean("cache_disable", false)) {
-                    view.galleryblock_progressbar.visibility = View.GONE
-                    view.galleryblock_progress_complete.visibility = View.GONE
+                if (cache.metadata.reader == null) {
+                    view.galleryblock_progressbar_layout.visibility = View.GONE
+                    view.galleryblock_progress_complete.visibility = View.INVISIBLE
                     return@launch
                 }
 
                 with(view.galleryblock_progressbar) {
+                    val imageList = cache.metadata.imageList!!
 
-                    progress = Cache(context).getImages(galleryID)?.size ?: 0
+                    progress = imageList.count { it != null }
+                    max = imageList.size
 
-                    if (visibility == View.GONE) {
-                        visibility = View.VISIBLE
-                        max = reader.galleryInfo.files.size
+                    with(view.galleryblock_progressbar_layout) {
+                        if (visibility == View.GONE)
+                            visibility = View.VISIBLE
                     }
 
-                    if (progress == max) {
+                    if (!imageList.contains(null)) {
+                        val downloadManager = DownloadManager.getInstance(context)
+
                         if (completeFlag.get(galleryID, false)) {
                             with(view.galleryblock_progress_complete) {
-                                setImageResource(R.drawable.ic_progressbar)
+                                setImageResource(
+                                    if (downloadManager.getDownloadFolder(galleryID) != null)
+                                        R.drawable.ic_progressbar
+                                    else R.drawable.ic_progressbar_cache
+                                )
                                 visibility = View.VISIBLE
                             }
                         } else {
                             with(view.galleryblock_progress_complete) {
-                                setImageDrawable(AnimatedVectorDrawableCompat.create(context, R.drawable.ic_progressbar_complete).apply {
+                                setImageDrawable(AnimatedVectorDrawableCompat.create(context,
+                                    if (downloadManager.getDownloadFolder(galleryID) != null)
+                                        R.drawable.ic_progressbar_complete
+                                    else R.drawable.ic_progressbar_complete_cache
+                                ).apply {
                                     this?.start()
                                 })
                                 visibility = View.VISIBLE
@@ -114,7 +124,16 @@ class GalleryBlockAdapter(private val glide: RequestManager, private val galleri
             }
         }
 
-        fun bind(galleryBlock: GalleryBlock) {
+        fun bind(galleryID: Int) {
+            this.galleryID = galleryID
+            updateProgress(view.context)
+
+            val cache = Cache.getInstance(view.context, galleryID)
+
+            val galleryBlock = runBlocking {
+                cache.getGalleryBlock()
+            } ?: return
+
             with(view) {
                 val resources = context.resources
                 val languages = resources.getStringArray(R.array.languages).map {
@@ -126,66 +145,61 @@ class GalleryBlockAdapter(private val glide: RequestManager, private val galleri
                 val artists = galleryBlock.artists
                 val series = galleryBlock.series
 
-                if (isThin)
-                    galleryblock_thumbnail.layoutParams.width = context.resources.getDimensionPixelSize(
-                        R.dimen.galleryblock_thumbnail_thin
-                    )
-                galleryblock_thumbnail.setImageDrawable(CircularProgressDrawable(context).also {
-                    it.start()
-                })
-
-                CoroutineScope(Dispatchers.Main).launch {
-                    val thumbnail = Cache(context).getThumbnail(galleryBlock.id).let {
-                        if (it != null)
-                            Base64.decode(it, Base64.DEFAULT)
-                        else
-                            null
+                galleryblock_thumbnail.apply {
+                    setOnClickListener {
+                        view.performClick()
                     }
-
-                    galleryblock_thumbnail.post {
-                        glide
-                            .load(thumbnail)
-                            .skipMemoryCache(true)
-                            .diskCacheStrategy(DiskCacheStrategy.NONE)
-                            .error(R.drawable.image_broken_variant)
-                            .apply {
-                                if (BuildConfig.CENSOR)
-                                    override(5, 8)
+                    setOnLongClickListener {
+                        view.performLongClick()
+                    }
+                    setFailureImage(ContextCompat.getDrawable(context, R.drawable.image_broken_variant))
+                    setImageLoaderCallback(object: ImageLoader.Callback {
+                        override fun onFail(error: Exception?) {
+                            Cache.getInstance(context, galleryID).let { cache ->
+                                cache.cacheFolder.getChild(".thumbnail").let { if (it.exists()) it.delete() }
+                                cache.downloadFolder?.getChild(".thumbnail")?.let { if (it.exists()) it.delete() }
                             }
-                            .into(galleryblock_thumbnail)
+                        }
+
+                        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)
+                        } }
                     }
                 }
 
-                //Check cache
-                val cache = Cache(context).getCachedGallery(galleryBlock.id)
-                val reader = Cache(context).getReaderOrNull(galleryBlock.id)
-
-                if (reader != null) {
-                    val count = cache.listFiles()?.count {
-                        Regex("^[0-9]+.+\$").matches(it.name)
-                    } ?: 0
-
-                    with(galleryblock_progressbar) {
-                        max = reader.galleryInfo.files.size
-                        progress = count
-
-                        visibility = View.VISIBLE
-                    }
-                } else
-                    galleryblock_progressbar.visibility = View.GONE
-
-                if (timerTask == null)
-                    timerTask = timer.schedule(0, 1000) {
-                        updateProgress(context, galleryBlock.id)
-                    }
-
                 galleryblock_title.text = galleryBlock.title
                 with(galleryblock_artist) {
-                    text = artists.joinToString(", ") { it.wordCapitalize() }
+                    text = artists.joinToString { it.wordCapitalize() }
                     visibility = when {
                         artists.isNotEmpty() -> View.VISIBLE
                         else -> View.GONE
                     }
+
+                    CoroutineScope(Dispatchers.IO).launch {
+                        val gallery = runCatching {
+                            getGallery(galleryID)
+                        }.getOrNull()
+
+                        if (gallery?.groups?.isNotEmpty() != true)
+                            return@launch
+
+                        launch(Dispatchers.Main) {
+                            text = context.getString(
+                                R.string.galleryblock_artist_with_group,
+                                artists.joinToString { it.wordCapitalize() },
+                                gallery.groups.joinToString { it.wordCapitalize() }
+                            )
+                        }
+                    }
                 }
                 with(galleryblock_series) {
                     text =
@@ -207,36 +221,32 @@ class GalleryBlockAdapter(private val glide: RequestManager, private val galleri
                     }
                 }
 
-                galleryblock_tag_group.removeAllViews()
-                galleryBlock.relatedTags.forEach {
-                    galleryblock_tag_group.addView(Chip(context).apply {
-                        val tag = Tag.parse(it).let {  tag ->
-                            when {
-                                tag.area != null -> tag
-                                else -> Tag("tag", it)
-                            }
+                with(galleryblock_tag_group) {
+                    onClickListener = {
+                        onChipClickedHandler.forEach { callback ->
+                            callback.invoke(it)
                         }
+                    }
 
-                        chipIcon = when(tag.area) {
-                            "male" -> {
-                                setChipBackgroundColorResource(R.color.material_blue_700)
-                                setTextColor(ContextCompat.getColor(context, android.R.color.white))
-                                ContextCompat.getDrawable(context, R.drawable.gender_male)
-                            }
-                            "female" -> {
-                                setChipBackgroundColorResource(R.color.material_pink_600)
-                                setTextColor(ContextCompat.getColor(context, android.R.color.white))
-                                ContextCompat.getDrawable(context, R.drawable.gender_female)
-                            }
-                            else -> null
+                    tags.clear()
+                    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)
                         }
-                        text = tag.tag.wordCapitalize()
-                        setEnsureMinTouchTargetSize(false)
-                        setOnClickListener {
-                            for (callback in onChipClickedHandler)
-                                callback.invoke(tag)
-                        }
-                    })
+                    )
+
+                    refresh()
                 }
 
                 galleryblock_id.text = galleryBlock.id.toString()
@@ -250,9 +260,6 @@ class GalleryBlockAdapter(private val glide: RequestManager, private val galleri
                     }
                 }
 
-                if (!::favorites.isInitialized)
-                    favorites = (context.applicationContext as Pupil).favorites
-
                 with(galleryblock_favorite) {
                     setImageResource(if (favorites.contains(galleryBlock.id)) R.drawable.ic_star_filled else R.drawable.ic_star_empty)
                     setOnClickListener {
@@ -282,9 +289,7 @@ class GalleryBlockAdapter(private val glide: RequestManager, private val galleri
 
 
                 // Make some views invisible to make it thinner
-                if (isThin) {
-                    galleryblock_language.visibility = View.GONE
-                    galleryblock_type.visibility = View.GONE
+                if (thin) {
                     galleryblock_tag_group.visibility = View.GONE
                 }
             }
@@ -336,9 +341,9 @@ class GalleryBlockAdapter(private val glide: RequestManager, private val galleri
 
     override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
         if (holder is GalleryViewHolder) {
-            val gallery = galleries[position-(if (showPrev) 1 else 0)]
+            val galleryID = galleries[position-(if (showPrev) 1 else 0)]
 
-            holder.bind(gallery)
+            holder.bind(galleryID)
 
             with(holder.view.galleryblock_primary) {
                 setOnClickListener {
@@ -364,7 +369,7 @@ class GalleryBlockAdapter(private val glide: RequestManager, private val galleri
                     mItemManger.closeAllExcept(layout)
 
                     holder.view.galleryblock_download.text =
-                        if (Cache(holder.view.context).isDownloading(gallery.id))
+                        if (DownloadManager.getInstance(holder.view.context).isDownloading(galleryID))
                             holder.view.context.getString(android.R.string.cancel)
                         else
                             holder.view.context.getString(R.string.main_download)
@@ -379,18 +384,9 @@ class GalleryBlockAdapter(private val glide: RequestManager, private val galleri
         }
     }
 
-    override fun onViewDetachedFromWindow(holder: RecyclerView.ViewHolder) {
-        super.onViewDetachedFromWindow(holder)
-
-        if (holder is GalleryViewHolder) {
-            holder.timerTask?.cancel()
-            holder.timerTask = null
-        }
-    }
-
     override fun getItemCount() =
-        (if (galleries.isEmpty()) 0 else galleries.size)+
-        (if (showNext) 1 else 0)+
+        galleries.size +
+        (if (showNext) 1 else 0) +
         (if (showPrev) 1 else 0)
 
     override fun getItemViewType(position: Int): Int {

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

@@ -24,10 +24,10 @@ import android.view.LayoutInflater
 import android.view.MotionEvent
 import android.view.View
 import android.view.ViewGroup
-import androidx.preference.PreferenceManager
 import androidx.recyclerview.widget.RecyclerView
 import kotlinx.android.synthetic.main.item_mirrors.view.*
 import xyz.quaver.pupil.R
+import xyz.quaver.pupil.util.Preferences
 import java.util.*
 
 class MirrorAdapter(context: Context) : RecyclerView.Adapter<MirrorAdapter.ViewHolder>() {
@@ -41,8 +41,7 @@ class MirrorAdapter(context: Context) : RecyclerView.Adapter<MirrorAdapter.ViewH
     }.toMap()
 
     val list = mirrors.keys.toMutableList().apply {
-        PreferenceManager.getDefaultSharedPreferences(context)
-            .getString("mirrors", "")!!
+        Preferences.get<String>("mirrors")
             .split(">")
             .reversed()
             .forEach {

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

@@ -18,153 +18,233 @@
 
 package xyz.quaver.pupil.adapters
 
-import android.app.Activity
+import android.content.Context
+import android.graphics.DiscretePathEffect
+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.preference.PreferenceManager
+import androidx.core.content.ContextCompat
+import androidx.core.view.updateLayoutParams
 import androidx.recyclerview.widget.RecyclerView
-import com.bumptech.glide.RequestManager
-import com.bumptech.glide.load.engine.DiskCacheStrategy
-import com.bumptech.glide.load.model.GlideUrl
-import com.bumptech.glide.load.model.LazyHeaders
+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.android.synthetic.main.item_reader.view.*
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.launch
-import xyz.quaver.Code
+import kotlinx.coroutines.*
 import xyz.quaver.hitomi.Reader
-import xyz.quaver.hitomi.getReferer
-import xyz.quaver.hitomi.imageUrlFromImage
-import xyz.quaver.hiyobi.cookie
-import xyz.quaver.hiyobi.createImgList
-import xyz.quaver.hiyobi.user_agent
 import xyz.quaver.pupil.R
-import xyz.quaver.pupil.util.download.Cache
-import xyz.quaver.pupil.util.download.DownloadWorker
-import java.util.*
-import kotlin.concurrent.schedule
+import xyz.quaver.pupil.ui.ReaderActivity
+import xyz.quaver.pupil.util.downloader.Cache
+import java.io.File
 import kotlin.math.roundToInt
 
-class ReaderAdapter(private val glide: RequestManager,
-                    private val galleryID: Int,
-                    private val activity: Activity) : RecyclerView.Adapter<ReaderAdapter.ViewHolder>() {
+class ReaderAdapter(
+    private val activity: ReaderActivity,
+    private val galleryID: Int
+) : RecyclerView.Adapter<ReaderAdapter.ViewHolder>() {
 
     var reader: Reader? = null
-    val timer = Timer()
 
     var isFullScreen = false
 
-    var onItemClickListener : ((Int) -> (Unit))? = null
+    var onItemClickListener : (() -> (Unit))? = null
 
-    class ViewHolder(val view: View) : RecyclerView.ViewHolder(view)
-
-    var downloadWorker: DownloadWorker? = null
+    class ViewHolder(val view: View) : RecyclerView.ViewHolder(view) {
+        fun clear() {
+            view.image.mainView.let {
+                when (it) {
+                    is SubsamplingScaleImageView ->
+                        it.recycle()
+                    is SimpleDraweeView ->
+                        it.controller = null
+                }
+            }
+        }
+    }
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
         return LayoutInflater.from(parent.context).inflate(
             R.layout.item_reader, parent, false
         ).let {
+            with(it) {
+                image.setImageViewFactory(FrescoImageViewFactory().apply {
+                    updateView = { imageInfo ->
+                        it.image.updateLayoutParams<ConstraintLayout.LayoutParams> {
+                            dimensionRatio = "${imageInfo.width}:${imageInfo.height}"
+                        }
+                    }
+                })
+                image.setImageShownCallback(object : ImageShownCallback {
+                    override fun onMainImageShown() {
+                        it.image.mainView.let { v ->
+                            when (v) {
+                                is SubsamplingScaleImageView ->
+                                    if (!isFullScreen) it.image.layoutParams.height = ViewGroup.LayoutParams.WRAP_CONTENT
+                            }
+                        }
+                    }
+
+                    override fun onThumbnailShown() {}
+                })
+                image.setFailureImage(ContextCompat.getDrawable(context, R.drawable.image_broken_variant))
+                image.setOnClickListener {
+                    this.performClick()
+                }
+                setOnClickListener {
+                    onItemClickListener?.invoke()
+                }
+            }
+
             ViewHolder(it)
         }
     }
 
+    private var cache: Cache? = null
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
         holder.view as ConstraintLayout
 
-        if (downloadWorker == null)
-            downloadWorker = DownloadWorker.getInstance(holder.view.context)
+        if (cache == null)
+            cache = Cache.getInstance(holder.view.context, galleryID)
 
-        if (isFullScreen) {
-            holder.view.layoutParams.height = RecyclerView.LayoutParams.MATCH_PARENT
-            holder.view.container.layoutParams.height = ConstraintLayout.LayoutParams.MATCH_PARENT
+        if (!isFullScreen) {
+            holder.view.setBackgroundResource(R.drawable.reader_item_boundary)
+            holder.view.image.updateLayoutParams<ConstraintLayout.LayoutParams> {
+                height = 0
+                dimensionRatio =
+                    "${reader!!.galleryInfo.files[position].width}:${reader!!.galleryInfo.files[position].height}"
+            }
         } else {
-            holder.view.layoutParams.height = RecyclerView.LayoutParams.WRAP_CONTENT
-            holder.view.container.layoutParams.height = 0
-
-            (holder.view.container.layoutParams as ConstraintLayout.LayoutParams)
-                .dimensionRatio = "W,${reader!!.galleryInfo.files[position].width}:${reader!!.galleryInfo.files[position].height}"
-        }
-
-        holder.view.image.setOnPhotoTapListener { _, _, _ ->
-            onItemClickListener?.invoke(position)
-        }
-
-        holder.view.container.setOnClickListener {
-            onItemClickListener?.invoke(position)
+            holder.view.layoutParams.height = ViewGroup.LayoutParams.MATCH_PARENT
+            holder.view.image.updateLayoutParams<ConstraintLayout.LayoutParams> {
+                height = ConstraintLayout.LayoutParams.MATCH_PARENT
+                dimensionRatio = null
+            }
+            holder.view.background = null
         }
 
         holder.view.reader_index.text = (position+1).toString()
 
-        val preferences = PreferenceManager.getDefaultSharedPreferences(holder.view.context)
-        if (preferences.getBoolean("cache_disable", false)) {
-            val lowQuality = preferences.getBoolean("low_quality", false)
+        val image = cache!!.getImage(position)
+        val progress = activity.downloader?.progress?.get(galleryID)?.get(position)
 
-            val url = when (reader!!.code) {
-                Code.HITOMI ->
-                    GlideUrl(
-                        imageUrlFromImage(
-                            galleryID,
-                            reader!!.galleryInfo.files[position],
-                            !lowQuality
-                        )
-                    , LazyHeaders.Builder().addHeader("Referer", getReferer(galleryID)).build())
-                Code.HIYOBI ->
-                    GlideUrl(createImgList(galleryID, reader!!, lowQuality)[position].path, LazyHeaders.Builder()
-                        .addHeader("User-Agent", user_agent)
-                        .addHeader("Cookie", cookie)
-                        .build())
-                else -> null
-            }
-            holder.view.image.post {
-                glide
-                    .load(url!!)
-                    .diskCacheStrategy(DiskCacheStrategy.NONE)
-                    .skipMemoryCache(false)
-                    .fitCenter()
-                    .error(R.drawable.image_broken_variant)
-                    .into(holder.view.image)
-            }
+        if (progress?.isInfinite() == true && image != null) {
+            holder.view.progress_group.visibility = View.INVISIBLE
+            holder.view.image.showImage(image.uri)
         } else {
-            val image = Cache(holder.view.context).getImage(galleryID, position)
-            val progress = downloadWorker!!.progress[galleryID]?.get(position)
+            holder.view.progress_group.visibility = View.VISIBLE
+            holder.view.reader_item_progressbar.progress =
+                if (progress?.isInfinite() == true)
+                    100
+                else
+                    progress?.roundToInt() ?: 0
 
-            if (progress?.isInfinite() == true && image != null) {
-                holder.view.reader_item_progressbar.visibility = View.INVISIBLE
+            holder.clear()
 
-                holder.view.image.post {
-                    glide
-                        .load(image)
-                        .diskCacheStrategy(DiskCacheStrategy.NONE)
-                        .skipMemoryCache(true)
-                        .fitCenter()
-                        .error(R.drawable.image_broken_variant)
-                        .into(holder.view.image)
-                }
-
-            } else {
-                holder.view.reader_item_progressbar.visibility = View.VISIBLE
-
-                glide.clear(holder.view.image)
-
-                holder.view.reader_item_progressbar.progress =
-                    if (progress?.isInfinite() == true)
-                        100
-                    else
-                        progress?.roundToInt() ?: 0
-
-                holder.view.image.setImageDrawable(null)
-
-                timer.schedule(1000) {
-                    CoroutineScope(Dispatchers.Main).launch {
-                        notifyItemChanged(position)
-                    }
-                }
+            CoroutineScope(Dispatchers.Main).launch {
+                delay(1000)
+                notifyItemChanged(position)
             }
         }
     }
 
     override fun getItemCount() = reader?.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

@@ -18,32 +18,35 @@
 
 package xyz.quaver.pupil.adapters
 
+import android.net.Uri
 import android.view.ViewGroup
-import android.widget.ImageView
+import androidx.core.content.ContextCompat
 import androidx.recyclerview.widget.RecyclerView
-import com.bumptech.glide.RequestManager
-import com.bumptech.glide.load.engine.DiskCacheStrategy
-import xyz.quaver.pupil.BuildConfig
+import com.github.piasy.biv.view.BigImageView
+import xyz.quaver.pupil.R
 
-class ThumbnailAdapter(private val glide: RequestManager, var thumbnails: List<String>) : RecyclerView.Adapter<ThumbnailAdapter.ViewHolder>() {
+class ThumbnailAdapter(var thumbnails: List<String>) : RecyclerView.Adapter<ThumbnailAdapter.ViewHolder>() {
 
-    class ViewHolder(val view: ImageView) : RecyclerView.ViewHolder(view)
+    class ViewHolder(val view: BigImageView) : RecyclerView.ViewHolder(view) {
+        fun clear() {
+            view.ssiv?.recycle()
+        }
+    }
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
-        return ViewHolder(ImageView(parent.context))
+        return ViewHolder(BigImageView(parent.context).apply {
+            setFailureImage(ContextCompat.getDrawable(context, R.drawable.image_broken_variant))
+        })
     }
 
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
-        glide
-            .load(thumbnails[position])
-            .diskCacheStrategy(DiskCacheStrategy.NONE)
-            .apply {
-                if (BuildConfig.CENSOR)
-                    override(5, 8)
-            }
-            .into(holder.view)
+        holder.view.showImage(Uri.parse(thumbnails[position]))
     }
 
     override fun getItemCount() = thumbnails.size
 
+    override fun onViewRecycled(holder: ViewHolder) {
+        holder.clear()
+    }
+
 }

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

@@ -21,17 +21,19 @@ package xyz.quaver.pupil.adapters
 import android.view.ViewGroup
 import androidx.recyclerview.widget.GridLayoutManager
 import androidx.recyclerview.widget.RecyclerView
-import com.bumptech.glide.RequestManager
 import kotlin.math.min
 
-class ThumbnailPageAdapter(private val glide: RequestManager, private val thumbnails: List<String>) : RecyclerView.Adapter<ThumbnailPageAdapter.ViewHolder>() {
+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 {
-            layoutManager = GridLayoutManager(parent.context, 3)
-            adapter = ThumbnailAdapter(glide, listOf())
+            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)
         })
     }
@@ -41,7 +43,7 @@ class ThumbnailPageAdapter(private val glide: RequestManager, private val thumbn
             thumbnails = this@ThumbnailPageAdapter.thumbnails.slice(9*position until min(9*position+9, this@ThumbnailPageAdapter.thumbnails.size))
             notifyDataSetChanged()
 
-            holder.view.layoutManager?.scrollToPosition(itemCount-1)
+            (holder.view.layoutManager as GridLayoutManager).scrollToPosition(8)
         }
     }
 

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

@@ -16,7 +16,7 @@
  *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-package xyz.quaver.pupil
+package xyz.quaver.pupil.receiver
 
 import android.app.DownloadManager
 import android.app.PendingIntent
@@ -28,18 +28,11 @@ import android.webkit.MimeTypeMap
 import androidx.core.app.NotificationCompat
 import androidx.core.app.NotificationManagerCompat
 import androidx.core.content.FileProvider
-import androidx.preference.PreferenceManager
-import xyz.quaver.pupil.util.NOTIFICATION_ID_UPDATE
-import xyz.quaver.pupil.util.cancelImport
+import xyz.quaver.pupil.R
+import xyz.quaver.pupil.util.Preferences
 import java.io.File
 
-class BroadcastReciever : BroadcastReceiver() {
-
-    companion object {
-        const val ACTION_CANCEL_IMPORT = "ACTION_CANCEL_IMPORT"
-
-        const val EXTRA_IMPORT_NOTIFICATION_ID = "EXTRA_IMPORT_NOTIFICATION_ID"
-    }
+class UpdateBroadcastReceiver : BroadcastReceiver() {
 
     override fun onReceive(context: Context?, intent: Intent?) {
         context ?: return
@@ -48,12 +41,10 @@ class BroadcastReciever : BroadcastReceiver() {
             DownloadManager.ACTION_DOWNLOAD_COMPLETE -> {
 
                 // Validate download
-
-                val preference = PreferenceManager.getDefaultSharedPreferences(context)
-                val downloadID = preference.getLong("update_download_id", -1)
+                val downloadID: Long = Preferences["update_download_id"]
                 val downloadManager = context.getSystemService(Context.DOWNLOAD_SERVICE) as DownloadManager
 
-                if (intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1) != downloadID)
+                if (intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -2) != downloadID)
                     return
 
                 // Get target uri
@@ -62,19 +53,21 @@ class BroadcastReciever : BroadcastReceiver() {
                     .setFilterById(downloadID)
 
                 val uri = downloadManager.query(query).use { cursor ->
-                    cursor.moveToFirst()
+                    if (cursor.moveToFirst()) {
+                        cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI)).let {
+                            val uri = Uri.parse(it)
 
-                    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 -> return
+                            when (uri.scheme) {
+                                "file" ->
+                                    FileProvider.getUriForFile(context, context.applicationContext.packageName + ".provider", File(uri.path!!)
+                                    )
+                                "content" -> uri
+                                else -> null
+                            }
                         }
-                    }
-                }
+                    } else
+                        null
+                } ?: return
 
                 // Build Notification
 
@@ -92,10 +85,7 @@ class BroadcastReciever : BroadcastReceiver() {
                     .setContentIntent(pendingIntent)
                     .build()
 
-                notificationManager.notify(NOTIFICATION_ID_UPDATE, notification)
-            }
-            ACTION_CANCEL_IMPORT -> {
-                cancelImport = true
+                notificationManager.notify(R.id.notification_id_update, notification)
             }
         }
     }

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

@@ -0,0 +1,425 @@
+/*
+ *     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 androidx.core.app.NotificationCompat
+import androidx.core.app.NotificationManagerCompat
+import androidx.core.app.TaskStackBuilder
+import androidx.core.content.ContextCompat
+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.cleanCache
+import xyz.quaver.pupil.util.downloader.Cache
+import xyz.quaver.pupil.util.downloader.DownloadManager
+import xyz.quaver.pupil.util.ellipsize
+import xyz.quaver.pupil.util.normalizeID
+import xyz.quaver.pupil.util.requestBuilders
+import java.io.IOException
+import java.util.*
+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)
+        }
+        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),
+            ).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 interceptor: PupilInterceptor = { chain ->
+        val request = chain.request()
+        var response = chain.proceed(request)
+
+        var retry = 5
+        while (!response.isSuccessful && retry > 0) {
+            response = chain.proceed(request)
+            retry--
+        }
+
+        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) {
+            if (e.message?.contains("cancel", true) == false) {
+                val galleryID = (call.request().tag() as Tag).galleryID
+
+                // Retry
+                cancel(galleryID)
+                download(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()
+
+            kotlin.runCatching {
+                val image = response.also { if (it.code() != 200) throw IOException() }.body()?.use { it.bytes() } ?: throw Exception()
+                val padding = ceil(progress[galleryID]?.size?.let { log10(it.toFloat()) } ?: 0F).toInt()
+
+                CoroutineScope(Dispatchers.IO).launch {
+                    kotlin.runCatching {
+                        Cache.getInstance(this@DownloadService, galleryID).putImage(index, "${index.toString().padStart(padding, '0')}.$ext", image)
+                    }.onSuccess {
+                        progress[galleryID]?.set(index, Float.POSITIVE_INFINITY)
+                        notify(galleryID)
+
+                        if (isCompleted(galleryID)) {
+                            if (DownloadManager.getInstance(this@DownloadService)
+                                    .getDownloadFolder(galleryID) != null)
+                                Cache.getInstance(this@DownloadService, galleryID).moveToDownload()
+
+                            startId?.let { stopSelf(it) }
+                        }
+                    }.onFailure {
+                        cancel(galleryID)
+                        download(galleryID)
+                    }
+                }
+            }
+        }
+    }
+
+    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 reader = cache.getReader()
+
+        // Gallery doesn't exist
+        if (reader == null) {
+            delete(galleryID)
+            progress[galleryID] = mutableListOf()
+            return@launch
+        }
+
+        histories.add(galleryID)
+
+        progress[galleryID] = MutableList(reader.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(reader.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)
+            }
+        }
+
+        reader.requestBuilders.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/types/Suggestions.kt

@@ -18,15 +18,33 @@
 
 package xyz.quaver.pupil.types
 
-import com.arlib.floatingsearchview.suggestions.model.SearchSuggestion
+import kotlinx.android.parcel.IgnoredOnParcel
 import kotlinx.android.parcel.Parcelize
+import xyz.quaver.floatingsearchview.suggestions.model.SearchSuggestion
 import xyz.quaver.hitomi.Suggestion
+import xyz.quaver.pupil.util.translations
 
 @Parcelize
 data class TagSuggestion(val s: String, val t: Int, val u: String, val n: String) : SearchSuggestion {
     constructor(s: Suggestion) : this(s.s, s.t, s.u, s.n)
 
-    override fun getBody(): String {
-        return s
-    }
-}
+    @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

@@ -24,7 +24,7 @@ import kotlinx.serialization.Serializable
 data class Tag(val area: String?, val tag: String, val isNegative: Boolean = false) {
     companion object {
         fun parse(tag: String) : Tag {
-            if (tag.first() == '-') {
+            if (tag.firstOrNull() == '-') {
                 tag.substring(1).split(Regex(":"), 2).let {
                     return when(it.size) {
                         2 -> Tag(it[0], it[1], true)
@@ -62,12 +62,10 @@ data class Tag(val area: String?, val tag: String, val isNegative: Boolean = fal
         return false
     }
 
-    override fun hashCode(): Int {
-        return super.hashCode()
-    }
+    override fun hashCode() = toString().hashCode()
 }
 
-class Tags(tag: List<Tag?>?) : ArrayList<Tag>() {
+class Tags(val tags: MutableSet<Tag> = mutableSetOf()) : MutableSet<Tag> by tags {
 
     companion object {
         fun parse(tags: String) : Tags {
@@ -77,20 +75,13 @@ class Tags(tag: List<Tag?>?) : ArrayList<Tag>() {
                         Tag.parse(it)
                     else
                         null
-                }
+                }.filterNotNull().toMutableSet()
             )
         }
     }
 
-    init {
-        tag?.forEach {
-            if (it != null)
-                add(it)
-        }
-    }
-
     fun contains(element: String): Boolean {
-        forEach {
+        tags.forEach {
             if (it.toString() == element)
                 return true
         }
@@ -99,23 +90,22 @@ class Tags(tag: List<Tag?>?) : ArrayList<Tag>() {
     }
 
     fun add(element: String): Boolean {
-        return super.add(Tag.parse(element))
+        return tags.add(Tag.parse(element))
     }
 
     fun remove(element: String) {
-        filter { it.toString() == element }.forEach {
-            remove(it)
+        tags.filter { it.toString() == element }.forEach {
+            tags.remove(it)
         }
     }
 
     fun removeByArea(area: String, isNegative: Boolean? = null) {
-        filter { it.area == area && (if(isNegative == null) true else (it.isNegative == isNegative)) }.forEach {
-            remove(it)
+        tags.filter { it.area == area && (if(isNegative == null) true else (it.isNegative == isNegative)) }.forEach {
+            tags.remove(it)
         }
     }
 
     override fun toString(): String {
-        return joinToString(" ") { it.toString() }
+        return tags.joinToString(" ") { it.toString() }
     }
-
 }

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

@@ -27,7 +27,6 @@ import androidx.appcompat.app.AppCompatActivity
 import androidx.biometric.BiometricManager
 import androidx.biometric.BiometricPrompt
 import androidx.core.content.ContextCompat
-import androidx.preference.PreferenceManager
 import com.andrognito.patternlockview.PatternLockView
 import com.google.android.material.snackbar.Snackbar
 import kotlinx.android.synthetic.main.activity_lock.*
@@ -38,7 +37,9 @@ 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
@@ -52,6 +53,7 @@ class LockActivity : AppCompatActivity() {
                     val result = lockManager.check(it)
 
                     if (result == true) {
+                        lastUnlocked = System.currentTimeMillis()
                         setResult(Activity.RESULT_OK)
                         finish()
                     } else
@@ -86,6 +88,7 @@ class LockActivity : AppCompatActivity() {
                     val result = lockManager.check(it)
 
                     if (result == true) {
+                        lastUnlocked = System.currentTimeMillis()
                         setResult(Activity.RESULT_OK)
                         finish()
                     } else {
@@ -157,6 +160,7 @@ class LockActivity : AppCompatActivity() {
                 override fun onAuthenticationSucceeded(
                     result: BiometricPrompt.AuthenticationResult) {
                     super.onAuthenticationSucceeded(result)
+                    lastUnlocked = System.currentTimeMillis()
                     setResult(RESULT_OK)
                     finish()
                     return
@@ -185,6 +189,7 @@ class LockActivity : AppCompatActivity() {
         }
 
         mode = intent.getStringExtra("mode")
+        val force = intent.getBooleanExtra("force", false)
 
         when(mode) {
             null -> {
@@ -194,8 +199,15 @@ class LockActivity : AppCompatActivity() {
                     return
                 }
 
+                if (System.currentTimeMillis() - lastUnlocked < 5*60*1000 && !force) {
+                    lastUnlocked = System.currentTimeMillis()
+                    setResult(RESULT_OK)
+                    finish()
+                    return
+                }
+
                 if (
-                    PreferenceManager.getDefaultSharedPreferences(this).getBoolean("lock_fingerprint", false)
+                    Preferences["lock_fingerprint"]
                     && BiometricManager.from(this).canAuthenticate() == BiometricManager.BIOMETRIC_SUCCESS
                 ) {
                     lock_fingerprint.apply {

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

@@ -19,62 +19,59 @@
 package xyz.quaver.pupil.ui
 
 import android.annotation.SuppressLint
-import android.app.Activity
 import android.content.Intent
-import android.graphics.drawable.Animatable
 import android.net.Uri
 import android.os.Bundle
-import android.text.*
-import android.text.style.AlignmentSpan
-import android.util.TypedValue
+import android.text.InputType
+import android.text.util.Linkify
 import android.view.KeyEvent
+import android.view.MenuItem
 import android.view.MotionEvent
 import android.view.View
-import android.view.WindowManager
-import android.view.inputmethod.EditorInfo
-import android.widget.*
+import android.widget.EditText
+import android.widget.ImageView
+import android.widget.LinearLayout
+import android.widget.TextView
 import androidx.appcompat.app.AlertDialog
-import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.app.AppCompatDelegate
 import androidx.cardview.widget.CardView
-import androidx.core.content.ContextCompat
-import androidx.core.content.res.ResourcesCompat
 import androidx.core.view.GravityCompat
-import androidx.preference.PreferenceManager
-import androidx.vectordrawable.graphics.drawable.AnimatedVectorDrawableCompat
-import com.arlib.floatingsearchview.FloatingSearchView
-import com.arlib.floatingsearchview.FloatingSearchViewDayNight
-import com.arlib.floatingsearchview.suggestions.model.SearchSuggestion
-import com.arlib.floatingsearchview.util.view.SearchInputView
-import com.bumptech.glide.Glide
 import com.google.android.material.appbar.AppBarLayout
+import com.google.android.material.navigation.NavigationView
+import com.google.android.material.snackbar.Snackbar
 import com.google.firebase.crashlytics.FirebaseCrashlytics
 import kotlinx.android.synthetic.main.activity_main.*
 import kotlinx.android.synthetic.main.activity_main_content.*
 import kotlinx.coroutines.*
-import kotlinx.serialization.builtins.list
-import xyz.quaver.hitomi.GalleryBlock
+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.hitomi.doSearch
 import xyz.quaver.hitomi.getGalleryIDsFromNozomi
 import xyz.quaver.hitomi.getSuggestionsForQuery
-import xyz.quaver.pupil.Pupil
-import xyz.quaver.pupil.R
+import xyz.quaver.pupil.*
 import xyz.quaver.pupil.adapters.GalleryBlockAdapter
-import xyz.quaver.pupil.types.Tag
-import xyz.quaver.pupil.types.TagSuggestion
-import xyz.quaver.pupil.types.Tags
+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.util.*
-import xyz.quaver.pupil.util.download.Cache
-import xyz.quaver.pupil.util.download.DownloadWorker
-import java.io.File
-import java.util.*
-import kotlin.collections.ArrayList
+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.abs
 import kotlin.math.ceil
 import kotlin.math.min
 import kotlin.math.roundToInt
 
-class MainActivity : AppCompatActivity() {
+class MainActivity :
+    BaseActivity(),
+    NavigationView.OnNavigationItemSelectedListener
+{
 
     enum class Mode {
         SEARCH,
@@ -82,13 +79,13 @@ class MainActivity : AppCompatActivity() {
         DOWNLOAD,
         FAVORITE
     }
-    
+
     enum class SortMode {
         NEWEST,
         POPULAR
     }
 
-    private val galleries = ArrayList<GalleryBlock>()
+    private val galleries = ArrayList<Int>()
 
     private var query = ""
     set(value) {
@@ -103,57 +100,30 @@ class MainActivity : AppCompatActivity() {
     private var mode = Mode.SEARCH
     private var sortMode = SortMode.NEWEST
 
-    private val REQUEST_SETTINGS = 45162
-    private val REQUEST_LOCK = 561
-
     private var galleryIDs: Deferred<List<Int>>? = null
     private var totalItems = 0
     private var loadingJob: Job? = null
     private var currentPage = 0
 
-    private lateinit var histories: Histories
-    private lateinit var favorites: Histories
-
     override fun onCreate(savedInstanceState: Bundle?) {
+        AppCompatDelegate.setCompatVectorFromResourcesEnabled(true)
         super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
 
-        val lockManager = try {
-            LockManager(this)
-        } catch (e: Exception) {
-            android.app.AlertDialog.Builder(this).apply {
-                setTitle(R.string.warning)
-                setMessage(R.string.lock_corrupted)
-                setPositiveButton(android.R.string.ok) { _, _ ->
-                    finish()
-                }
-            }.show()
-
-            return
-        }
-
-        if (lockManager.isNotEmpty())
-            startActivityForResult(Intent(this, LockActivity::class.java), REQUEST_LOCK)
-
-        val preference = PreferenceManager.getDefaultSharedPreferences(this)
-
-        if (Locale.getDefault().language == "ko") {
-            if (!preference.getBoolean("https_block_alert", false)) {
-                android.app.AlertDialog.Builder(this).apply {
-                    setTitle(R.string.https_block_alert_title)
-                    setMessage(R.string.https_block_alert)
-                    setPositiveButton(android.R.string.ok) { _, _ -> }
-                }.show()
-
-                preference.edit().putBoolean("https_block_alert", true).apply()
+        if (intent.action == Intent.ACTION_VIEW) {
+            intent.dataString?.let { url ->
+                restore(url,
+                    onFailure = {
+                        Snackbar.make(this.main_recyclerview, R.string.settings_backup_failed, Snackbar.LENGTH_LONG).show()
+                    }, onSuccess = {
+                        Snackbar.make(this.main_recyclerview, getString(R.string.settings_restore_success, it.size), Snackbar.LENGTH_LONG).show()
+                    }
+                )
             }
         }
 
-        with(application as Pupil) {
-            this@MainActivity.histories = histories
-            this@MainActivity.favorites = favorites
-        }
-
-        setContentView(R.layout.activity_main)
+        if (Preferences["download_folder", ""].isEmpty())
+            DownloadLocationDialogFragment().show(supportFragmentManager, "Download Location Dialog")
 
         checkUpdate(this)
 
@@ -179,25 +149,11 @@ class MainActivity : AppCompatActivity() {
     override fun onDestroy() {
         super.onDestroy()
 
-        (main_recyclerview?.adapter as? GalleryBlockAdapter)?.timer?.cancel()
-    }
-
-    override fun onResume() {
-        val preferences = PreferenceManager.getDefaultSharedPreferences(this)
-
-        if (preferences.getBoolean("security_mode", false))
-            window.setFlags(
-                WindowManager.LayoutParams.FLAG_SECURE,
-                WindowManager.LayoutParams.FLAG_SECURE)
-        else
-            window.clearFlags(WindowManager.LayoutParams.FLAG_SECURE)
-
-        super.onResume()
+        (main_recyclerview?.adapter as? GalleryBlockAdapter)?.updateAll = false
     }
 
     override fun onKeyDown(keyCode: Int, event: KeyEvent?): Boolean {
-        val preference = PreferenceManager.getDefaultSharedPreferences(this)
-        val perPage = preference.getString("per_page", "25")!!.toIntOrNull() ?: 25
+        val perPage = Preferences["per_page", "25"].toInt()
         val maxPage = ceil(totalItems / perPage.toDouble()).roundToInt()
 
         return when(keyCode) {
@@ -233,24 +189,6 @@ class MainActivity : AppCompatActivity() {
         }
     }
 
-    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
-        super.onActivityResult(requestCode, resultCode, data)
-        when(requestCode) {
-            REQUEST_SETTINGS -> {
-                runOnUiThread {
-                    cancelFetch()
-                    clearGalleries()
-                    fetchGalleries(query, sortMode)
-                    loadBlocks()
-                }
-            }
-            REQUEST_LOCK -> {
-                if (resultCode != Activity.RESULT_OK)
-                    finish()
-            }
-        }
-    }
-
     private fun initView() {
         var prevP1 = 0
         main_appbar_layout.addOnOffsetChangedListener(
@@ -269,85 +207,22 @@ class MainActivity : AppCompatActivity() {
             }
         )
 
+        Linkify.addLinks(main_noresult, Pattern.compile(getString(R.string.https_text)), null, null, { _, _ -> getString(R.string.https) })
+
         //NavigationView
-        main_nav_view.setNavigationItemSelectedListener {
-            runOnUiThread {
-                main_drawer_layout.closeDrawers()
-
-                when(it.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))))
-                    }
-                }
-            }
-
-            true
-        }
+        main_nav_view.setNavigationItemSelectedListener(this)
 
         with(main_fab_cancel) {
             setImageResource(R.drawable.cancel)
             setOnClickListener {
-                DownloadWorker.getInstance(context).stop()
+                DownloadService.cancel(this@MainActivity)
             }
         }
 
         with(main_fab_jump) {
             setImageResource(R.drawable.ic_jump)
             setOnClickListener {
-                val preference = PreferenceManager.getDefaultSharedPreferences(context)
-                val perPage = preference.getString("per_page", "25")!!.toIntOrNull() ?: 25
+                val perPage = Preferences["per_page", "25"].toInt()
                 val editText = EditText(context)
 
                 AlertDialog.Builder(context).apply {
@@ -383,11 +258,7 @@ class MainActivity : AppCompatActivity() {
                     if (it?.isEmpty() == false) {
                         val galleryID = it.random()
 
-                        GalleryDialog(
-                            this@MainActivity,
-                            Glide.with(this@MainActivity),
-                            galleryID
-                        ).apply {
+                        GalleryDialog(this@MainActivity, galleryID).apply {
                             onChipClickedHandler.add {
                                 runOnUiThread {
                                     query = it.toQuery()
@@ -418,14 +289,22 @@ class MainActivity : AppCompatActivity() {
                     setTitle(R.string.main_open_gallery_by_id)
 
                     setPositiveButton(android.R.string.ok) { _, _ ->
-                            val galleryID = editText.text.toString().toIntOrNull() ?: return@setPositiveButton
-                            val intent = Intent(this@MainActivity, ReaderActivity::class.java).apply {
-                                putExtra("galleryID", galleryID)
+                        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()
                             }
-
-                            startActivity(intent)
-
-                            histories.add(galleryID)
+                        }.show()
                     }
                 }.show()
             }
@@ -440,7 +319,7 @@ class MainActivity : AppCompatActivity() {
     @SuppressLint("ClickableViewAccessibility")
     private fun setupRecyclerView() {
         with(main_recyclerview) {
-            adapter = GalleryBlockAdapter(Glide.with(this@MainActivity), galleries).apply {
+            adapter = GalleryBlockAdapter(galleries).apply {
                 onChipClickedHandler.add {
                     runOnUiThread {
                         query = it.toQuery()
@@ -453,74 +332,57 @@ class MainActivity : AppCompatActivity() {
                     }
                 }
                 onDownloadClickedHandler = { position ->
-                    val galleryID = galleries[position].id
-                    val worker = DownloadWorker.getInstance(context)
-                    if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean("cache_disable", false))
-                        Toast.makeText(context, R.string.settings_download_when_cache_disable_warning, Toast.LENGTH_SHORT).show()
-                    else {
-                        if (worker.progress.indexOfKey(galleryID) >= 0 && Cache(context).isDownloading(galleryID)) {     //download in progress
-                            Cache(context).setDownloading(galleryID, false)
-                            worker.cancel(galleryID)
-                        }
-                        else {
-                            Cache(context).setDownloading(galleryID, true)
+                    val galleryID = galleries[position]
 
-                            worker.queue.add(galleryID)
-                        }
+                    if (DownloadManager.getInstance(context).isDownloading(galleryID)) {     //download in progress
+                        DownloadService.cancel(this@MainActivity, galleryID)
+                    }
+                    else {
+                        DownloadManager.getInstance(context).addDownloadFolder(galleryID)
+                        DownloadService.download(this@MainActivity, galleryID)
                     }
 
                     closeAllItems()
                 }
 
                 onDeleteClickedHandler = { position ->
-                    val galleryID = galleries[position].id
+                    val galleryID = galleries[position]
+                    DownloadService.delete(this@MainActivity, galleryID)
 
-                    CoroutineScope(Dispatchers.Default).launch {
-                        DownloadWorker.getInstance(context).cancel(galleryID)
+                    histories.remove(galleryID)
 
-                        Cache(context).getCachedGallery(galleryID).deleteRecursively()
+                    if (this@MainActivity.mode != Mode.SEARCH)
+                        runOnUiThread {
+                            cancelFetch()
+                            clearGalleries()
+                            fetchGalleries(query, sortMode)
+                            loadBlocks()
+                        }
 
-                        histories.remove(galleryID)
-
-                        if (this@MainActivity.mode != Mode.SEARCH)
-                            runOnUiThread {
-                                cancelFetch()
-                                clearGalleries()
-                                fetchGalleries(query, sortMode)
-                                loadBlocks()
-                            }
-
-                        completeFlag.put(galleryID, false)
-                    }
+                    completeFlag.put(galleryID, false)
 
                     closeAllItems()
                 }
             }
-            ItemClickSupport.addTo(this)
-                .setOnItemClickListener { _, position, v ->
+            ItemClickSupport.addTo(this).apply {
+                onItemClickListener = listener@{ _, position, v ->
                     if (v !is CardView)
-                        return@setOnItemClickListener
+                        return@listener
 
                     val intent = Intent(this@MainActivity, ReaderActivity::class.java)
-                    val gallery = galleries[position]
-                    intent.putExtra("galleryID", gallery.id)
+                    intent.putExtra("galleryID", galleries[position])
 
                     //TODO: Maybe sprinkling some transitions will be nice :D
                     startActivity(intent)
+                }
 
-                    histories.add(gallery.id)
-                }.setOnItemLongClickListener { _, position, v ->
-
+                onItemLongClickListener = listener@{ _, position, v ->
                     if (v !is CardView)
-                        return@setOnItemLongClickListener true
+                        return@listener false
 
-                    val galleryID = galleries[position].id
+                    val galleryID = galleries.getOrNull(position) ?: return@listener true
 
-                    GalleryDialog(
-                        this@MainActivity,
-                        Glide.with(this@MainActivity),
-                        galleryID
-                    ).apply {
+                    GalleryDialog(this@MainActivity, galleryID).apply {
                         onChipClickedHandler.add {
                             runOnUiThread {
                                 query = it.toQuery()
@@ -537,11 +399,11 @@ class MainActivity : AppCompatActivity() {
 
                     true
                 }
+            }
 
             var origin = 0f
             var target = -1
-            val preferences = PreferenceManager.getDefaultSharedPreferences(context)
-            val perPage = preferences.getString("per_page", "25")!!.toInt()
+            val perPage = Preferences["per_page", "25"].toInt()
             setOnTouchListener { _, event ->
                 when(event.action) {
                     MotionEvent.ACTION_UP -> {
@@ -742,38 +604,25 @@ class MainActivity : AppCompatActivity() {
         }
     }
 
+    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() {
-        val searchInputView = findViewById<SearchInputView>(R.id.search_bar_text)
-        //Change upper case letters to lower case
-        searchInputView.addTextChangedListener(object: TextWatcher {
-            override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {
-
-            }
-
-            override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
-
-            }
-
-            override fun afterTextChanged(s: Editable?) {
-                s ?: return
-
-                if (s.any { it.isUpperCase() })
-                    s.replace(0, s.length, s.toString().toLowerCase(Locale.getDefault()))
-            }
-        })
-        searchInputView.imeOptions = EditorInfo.IME_FLAG_NO_EXTRACT_UI
-
-        with(main_searchview as FloatingSearchViewDayNight) {
-            val favoritesFile = File(ContextCompat.getDataDir(context), "favorites_tags.json")
-            val serializer = Tag.serializer().list
-
-            if (!favoritesFile.exists()) {
-                favoritesFile.createNewFile()
-                favoritesFile.writeText(json.stringify(serializer, Tags(listOf())))
-            }
-
-            setOnLeftMenuClickListener(object: FloatingSearchView.OnLeftMenuClickListener {
+        with(main_searchview as xyz.quaver.pupil.ui.view.FloatingSearchView) {
+            onMenuStatusChangeListener = object: FloatingSearchView.OnMenuStatusChangeListener {
                 override fun onMenuOpened() {
                     (this@MainActivity.main_recyclerview.adapter as GalleryBlockAdapter).closeAllItems()
                 }
@@ -781,178 +630,69 @@ class MainActivity : AppCompatActivity() {
                 override fun onMenuClosed() {
                     //Do Nothing
                 }
-            })
+            }
 
-            setOnMenuItemClickListener {
-                when(it.itemId) {
-                    R.id.main_menu_settings -> startActivityForResult(Intent(this@MainActivity, SettingsActivity::class.java), REQUEST_SETTINGS)
-                    R.id.main_menu_thin -> {
-                        main_recyclerview.apply {
-                            (adapter as GalleryBlockAdapter).apply {
-                                isThin = !isThin
-                            }
-
-                            adapter = adapter       // Force to redraw
-                        }
-                    }
-                    R.id.main_menu_sort_newest -> {
-                        sortMode = SortMode.NEWEST
-                        it.isChecked = true
-
-                        runOnUiThread {
-                            currentPage = 0
-
-                            cancelFetch()
-                            clearGalleries()
-                            fetchGalleries(query, sortMode)
-                            loadBlocks()
-                        }
-                    }
-                    R.id.main_menu_sort_popular -> {
-                        sortMode = SortMode.POPULAR
-                        it.isChecked = true
-
-                        runOnUiThread {
-                            currentPage = 0
-
-                            cancelFetch()
-                            clearGalleries()
-                            fetchGalleries(query, sortMode)
-                            loadBlocks()
-                        }
-                    }
+            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"]
                 }
             }
 
-            setOnQueryChangeListener { _, query ->
+            onHistoryDeleteClickedListener = {
+                searchHistory.remove(it)
+                swapSuggestions(defaultSuggestions)
+            }
+            onFavoriteHistorySwitchClickListener = {
+                isFavorite = !isFavorite
+                swapSuggestions(defaultSuggestions)
+            }
+
+            onMenuItemClickListener = {
+                onActionMenuItemSelected(it)
+            }
+
+            onQueryChangeListener = lambda@{ _, query ->
                 this@MainActivity.query = query
 
                 suggestionJob?.cancel()
 
-                clearSuggestions()
-
                 if (query.isEmpty() or query.endsWith(' ')) {
-                    swapSuggestions(json.parse(serializer, favoritesFile.readText()).map {
-                        TagSuggestion(it.tag, -1, "", it.area ?: "tag")
-                    })
+                    swapSuggestions(defaultSuggestions)
 
-                    return@setOnQueryChangeListener
+                    return@lambda
                 }
 
-                val currentQuery = query.split(" ").last().replace('_', ' ')
+                swapSuggestions(listOf(LoadingSuggestion(getText(R.string.reader_loading).toString())))
+
+                val currentQuery = query.split(" ").last()
+                    .replace(Regex("^-"), "")
+                    .replace('_', ' ')
 
                 suggestionJob = CoroutineScope(Dispatchers.IO).launch {
-                    val suggestions = ArrayList(getSuggestionsForQuery(currentQuery).map { TagSuggestion(it) })
+                    val suggestions = kotlin.runCatching {
+                        getSuggestionsForQuery(currentQuery).map { TagSuggestion(it) }.toMutableList()
+                    }.getOrElse { mutableListOf() }
 
                     suggestions.filter {
                         val tag = "${it.n}:${it.s.replace(Regex("\\s"), "_")}"
-                        Tags(json.parse(serializer, favoritesFile.readText())).contains(tag)
+                        favoriteTags.contains(Tag.parse(tag))
                     }.reversed().forEach {
                         suggestions.remove(it)
                         suggestions.add(0, it)
                     }
 
                     withContext(Dispatchers.Main) {
-                        swapSuggestions(suggestions)
+                        swapSuggestions(if (suggestions.isNotEmpty()) suggestions else listOf(NoResultSuggestion(getText(R.string.main_no_result).toString())))
                     }
                 }
             }
 
-            setOnBindSuggestionCallback { suggestionView, leftIcon, textView, item, _ ->
-                item as TagSuggestion
-
-                val tag = "${item.n}:${item.s.replace(Regex("\\s"), "_")}"
-
-                val color = TypedValue()
-                theme.resolveAttribute(R.attr.colorControlNormal, color, true)
-
-                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)) {
-
-                    if (Tags(json.parse(serializer, favoritesFile.readText())).contains(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 favorites = Tags(json.parse(serializer, favoritesFile.readText()))
-
-                        if (favorites.contains(tag)) {
-                            setImageResource(R.drawable.ic_star_empty)
-                            favorites.remove(tag)
-                        }
-                        else {
-                            setImageDrawable(AnimatedVectorDrawableCompat.create(context,
-                                R.drawable.avd_star
-                            ))
-                            (drawable as Animatable).start()
-
-                            favorites.add(tag)
-                        }
-
-                        favoritesFile.writeText(json.stringify(serializer, favorites))
-                    }
-                }
-
-                if (item.t == -1) {
-                    textView.text = item.s
-                } else {
-                    val text = "${item.s}\n ${item.t}"
-
-                    val len = text.length
-                    val left = item.s.length
-
-                    textView.text = SpannableString(text).apply {
-                        val s = AlignmentSpan.Standard(Layout.Alignment.ALIGN_OPPOSITE)
-                        setSpan(s, left, len, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
-                        setSpan(SetLineOverlap(true), 1, len-2, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
-                        setSpan(SetLineOverlap(false), len-1, len, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
-                    }
-                }
-            }
-
-            setOnSearchListener(object : FloatingSearchView.OnSearchListener {
-                override fun onSuggestionClicked(searchSuggestion: SearchSuggestion?) {
-                    if (searchSuggestion !is TagSuggestion)
-                        return
-
-                    with(searchInputView.text) {
-                        delete(if (lastIndexOf(' ') == -1) 0 else lastIndexOf(' ')+1, length)
-                        append("${searchSuggestion.n}:${searchSuggestion.s.replace(Regex("\\s"), "_")} ")
-                    }
-                }
-
-                override fun onSearchAction(currentQuery: String?) {
-                    //Do search on onFocusCleared()
-                }
-            })
-
-            setOnFocusChangeListener(object: FloatingSearchView.OnFocusChangeListener {
+            onFocusChangeListener = object: FloatingSearchView.OnFocusChangeListener {
                 override fun onFocus() {
                     if (query.isEmpty() or query.endsWith(' '))
-                        swapSuggestions(json.parse(serializer, favoritesFile.readText()).map {
-                            TagSuggestion(it.tag, -1, "", it.area ?: "tag")
-                        })
+                        swapSuggestions(defaultSuggestions)
                 }
 
                 override fun onFocusCleared() {
@@ -966,12 +706,124 @@ class MainActivity : AppCompatActivity() {
                         loadBlocks()
                     }
                 }
-            })
+            }
 
             attachNavigationDrawerToMenuButton(main_drawer_layout)
         }
     }
 
+    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
+                main_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 {
+            main_drawer_layout.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()
@@ -993,14 +845,30 @@ class MainActivity : AppCompatActivity() {
     }
 
     private fun fetchGalleries(query: String, sortMode: SortMode) {
-        val preference = PreferenceManager.getDefaultSharedPreferences(this)
-        val defaultQuery = preference.getString("default_query", "")!!
+        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(this@MainActivity.main_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)
@@ -1026,34 +894,28 @@ class MainActivity : AppCompatActivity() {
                 Mode.HISTORY -> {
                     when {
                         query.isEmpty() -> {
-                            histories.toList().also {
+                            histories.reversed().also {
                                 totalItems = it.size
                             }
                         }
                         else -> {
                             val result = doSearch(query).sorted()
-                            histories.filter { result.binarySearch(it) >= 0 }.also {
+                            histories.reversed().filter { result.binarySearch(it) >= 0 }.also {
                                 totalItems = it.size
                             }
                         }
                     }
                 }
                 Mode.DOWNLOAD -> {
-                    val downloads = getDownloadDirectory(this@MainActivity).listFiles()?.filter { file ->
-                        file.isDirectory && file.name.toIntOrNull() != null
-                    }?.sortedByDescending {
-                        it.lastModified()
-                    }?.map {
-                        it.name.toInt()
-                    } ?: emptyList()
+                    val downloads = DownloadManager.getInstance(this@MainActivity).downloadFolderMap.keys.toList()
 
                     when {
-                        query.isEmpty() -> downloads.also {
+                        query.isEmpty() -> downloads.reversed().also {
                             totalItems = it.size
                         }
                         else -> {
                             val result = doSearch(query).sorted()
-                            downloads.filter { result.binarySearch(it) >= 0 }.also {
+                            downloads.reversed().filter { result.binarySearch(it) >= 0 }.also {
                                 totalItems = it.size
                             }
                         }
@@ -1061,12 +923,12 @@ class MainActivity : AppCompatActivity() {
                 }
                 Mode.FAVORITE -> {
                     when {
-                        query.isEmpty() -> favorites.toList().also {
+                        query.isEmpty() -> favorites.reversed().also {
                             totalItems = it.size
                         }
                         else -> {
                             val result = doSearch(query).sorted()
-                            favorites.filter { result.binarySearch(it) >= 0 }.also {
+                            favorites.reversed().filter { result.binarySearch(it) >= 0 }.also {
                                 totalItems = it.size
                             }
                         }
@@ -1077,8 +939,7 @@ class MainActivity : AppCompatActivity() {
     }
 
     private fun loadBlocks() {
-        val preference = PreferenceManager.getDefaultSharedPreferences(this)
-        val perPage = preference.getString("per_page", "25")?.toInt() ?: 25
+        val perPage = Preferences["per_page", "25"].toInt()
 
         loadingJob = CoroutineScope(Dispatchers.IO).launch {
             val galleryIDs = try {
@@ -1103,16 +964,16 @@ class MainActivity : AppCompatActivity() {
                 for (chunk in chunks)
                     chunk.map { galleryID ->
                         async {
-                            Cache(this@MainActivity).getGalleryBlock(galleryID)
+                            Cache.getInstance(this@MainActivity, galleryID).getGalleryBlock()?.let {
+                                galleryID
+                            }
                         }
                     }.forEach {
-                        val galleryBlock = it.await()
+                        it.await()?.also {
+                            withContext(Dispatchers.Main) {
+                                main_progressbar.hide()
 
-                        withContext(Dispatchers.Main) {
-                            main_progressbar.hide()
-
-                            if (galleryBlock != null) {
-                                galleries.add(galleryBlock)
+                                galleries.add(it)
                                 main_recyclerview.adapter!!.notifyItemInserted(galleries.size - 1)
                             }
                         }

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

@@ -18,41 +18,54 @@
 
 package xyz.quaver.pupil.ui
 
+import android.Manifest
+import android.content.ComponentName
 import android.content.Intent
+import android.content.ServiceConnection
+import android.content.pm.PackageManager
 import android.graphics.drawable.Animatable
 import android.graphics.drawable.Drawable
+import android.os.Build
 import android.os.Bundle
+import android.os.IBinder
 import android.view.*
-import android.widget.Toast
+import android.view.animation.Animation
+import android.view.animation.AnticipateInterpolator
+import android.view.animation.OvershootInterpolator
+import android.view.animation.TranslateAnimation
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AlertDialog
-import androidx.appcompat.app.AppCompatActivity
 import androidx.core.content.ContextCompat
-import androidx.preference.PreferenceManager
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.PagerSnapHelper
 import androidx.recyclerview.widget.RecyclerView
 import androidx.vectordrawable.graphics.drawable.Animatable2Compat
 import androidx.vectordrawable.graphics.drawable.AnimatedVectorDrawableCompat
-import com.bumptech.glide.Glide
 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.android.synthetic.main.activity_reader.*
 import kotlinx.android.synthetic.main.activity_reader.view.*
 import kotlinx.android.synthetic.main.dialog_numberpicker.view.*
+import kotlinx.android.synthetic.main.reader_eye_card.view.*
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 import xyz.quaver.Code
-import xyz.quaver.pupil.Pupil
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.adapters.ReaderAdapter
-import xyz.quaver.pupil.util.Histories
-import xyz.quaver.pupil.util.download.Cache
-import xyz.quaver.pupil.util.download.DownloadWorker
-import java.util.*
-import kotlin.concurrent.schedule
+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 : AppCompatActivity() {
+class ReaderActivity : BaseActivity() {
 
     private var galleryID = 0
     private var currentPage = 0
@@ -63,37 +76,57 @@ class ReaderActivity : AppCompatActivity() {
         field = value
 
         (reader_recyclerview.adapter as ReaderAdapter).isFullScreen = value
+    }
 
-        reader_progressbar.visibility = when {
-            value -> View.VISIBLE
-            else -> View.GONE
+    private lateinit var cache: Cache
+    var downloader: DownloadService? = null
+    private val conn = object: ServiceConnection {
+        override fun onServiceConnected(name: ComponentName?, service: IBinder?) {
+            downloader = (service as DownloadService.Binder).service.also {
+                it.priority = 0
+
+                if (!it.progress.containsKey(galleryID))
+                    DownloadService.download(this@ReaderActivity, galleryID, true)
+            }
+        }
+
+        override fun onServiceDisconnected(name: ComponentName?) {
+            downloader = null
         }
     }
 
-    private val timer = Timer()
-
     private val snapHelper = PagerSnapHelper()
-
     private var menu: Menu? = null
 
-    private lateinit var favorites: Histories
+    private val requestPermissionLauncher = registerForActivityResult(ActivityResultContracts.RequestPermission()) { isGranted ->
+        if (isGranted)
+            toggleCamera()
+        else
+            AlertDialog.Builder(this)
+                .setTitle(R.string.error)
+                .setMessage(R.string.camera_denied)
+                .setPositiveButton(android.R.string.ok) { _, _ ->}
+                .show()
+    }
+
+    enum class Eye {
+        LEFT,
+        RIGHT
+    }
+
+    private var cameraEnabled = false
+    private var eyeType: Eye? = null
+    private var eyeTime: Long = 0L
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_reader)
 
         title = getString(R.string.reader_loading)
         supportActionBar?.setDisplayHomeAsUpEnabled(false)
 
-        favorites = (application as Pupil).favorites
-
-        window.setFlags(
-            WindowManager.LayoutParams.FLAG_SECURE,
-            WindowManager.LayoutParams.FLAG_SECURE)
-
-        setContentView(R.layout.activity_reader)
-
         handleIntent(intent)
-
+        cache = Cache.getInstance(this, galleryID)
         FirebaseCrashlytics.getInstance().setCustomKey("GalleryID", galleryID)
 
         if (galleryID == 0) {
@@ -101,37 +134,8 @@ class ReaderActivity : AppCompatActivity() {
             return
         }
 
+        initDownloadListener()
         initView()
-        if (PreferenceManager.getDefaultSharedPreferences(this).getBoolean("cache_disable", false)) {
-            reader_download_progressbar.visibility = View.GONE
-            CoroutineScope(Dispatchers.IO).launch {
-                val reader = Cache(this@ReaderActivity).getReader(galleryID)
-
-                launch(Dispatchers.Main) initDownloader@{
-                    if (reader == null) {
-                        Snackbar
-                            .make(reader_layout, R.string.reader_failed_to_find_gallery, Snackbar.LENGTH_INDEFINITE)
-                            .show()
-                        return@initDownloader
-                    }
-
-                    (reader_recyclerview.adapter as ReaderAdapter).apply {
-                        this.reader = reader
-                        notifyDataSetChanged()
-                    }
-                    title = reader.galleryInfo.title ?: ""
-                    menu?.findItem(R.id.reader_menu_page_indicator)?.title = "$currentPage/${reader.galleryInfo.files.size}"
-
-                    menu?.findItem(R.id.reader_type)?.icon = ContextCompat.getDrawable(this@ReaderActivity,
-                        when (reader.code) {
-                            Code.HITOMI -> R.drawable.hitomi
-                            Code.HIYOBI -> R.drawable.ic_hiyobi
-                            else -> android.R.color.transparent
-                        })
-                }
-            }
-        } else
-            initDownloader()
     }
 
     override fun onNewIntent(intent: Intent) {
@@ -157,19 +161,6 @@ class ReaderActivity : AppCompatActivity() {
         }
     }
 
-    override fun onResume() {
-        val preferences = PreferenceManager.getDefaultSharedPreferences(this)
-
-        if (preferences.getBoolean("security_mode", false))
-            window.setFlags(
-                WindowManager.LayoutParams.FLAG_SECURE,
-                WindowManager.LayoutParams.FLAG_SECURE)
-        else
-            window.clearFlags(WindowManager.LayoutParams.FLAG_SECURE)
-
-        super.onResume()
-    }
-
     override fun onCreateOptionsMenu(menu: Menu?): Boolean {
         menuInflater.inflate(R.menu.reader, menu)
 
@@ -184,14 +175,14 @@ class ReaderActivity : AppCompatActivity() {
         return true
     }
 
-    override fun onOptionsItemSelected(item: MenuItem?): Boolean {
-        when(item?.itemId) {
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        when(item.itemId) {
             R.id.reader_menu_page_indicator -> {
                 val view = LayoutInflater.from(this).inflate(R.layout.dialog_numberpicker, reader_layout, false)
                 with(view.dialog_number_picker) {
-                    minValue=1
-                    maxValue=Cache(context).getReaderOrNull(galleryID)?.galleryInfo?.files?.size ?: 0
-                    value=currentPage
+                    minValue = 1
+                    maxValue = cache.metadata.reader?.galleryInfo?.files?.size ?: 0
+                    value = currentPage
                 }
                 val dialog = AlertDialog.Builder(this).apply {
                     setView(view)
@@ -220,14 +211,32 @@ class ReaderActivity : AppCompatActivity() {
         return true
     }
 
+    override fun onResume() {
+        super.onResume()
+
+        bindService(Intent(this, DownloadService::class.java), conn, BIND_AUTO_CREATE)
+
+        if (cameraEnabled)
+            startCamera(this, cameraCallback)
+    }
+
+    override fun onPause() {
+        super.onPause()
+        closeCamera()
+
+        if (downloader != null)
+            unbindService(conn)
+
+        downloader?.priority = galleryID
+    }
+
     override fun onDestroy() {
         super.onDestroy()
 
-        timer.cancel()
-        (reader_recyclerview?.adapter as? ReaderAdapter)?.timer?.cancel()
+        update = false
 
-        if (!Cache(this).isDownloading(galleryID))
-            DownloadWorker.getInstance(this@ReaderActivity).cancel(galleryID)
+        if (!DownloadManager.getInstance(this).isDownloading(galleryID))
+            DownloadService.cancel(this, galleryID)
     }
 
     override fun onBackPressed() {
@@ -262,51 +271,55 @@ class ReaderActivity : AppCompatActivity() {
         }
     }
 
-    private fun initDownloader() {
-        val worker = DownloadWorker.getInstance(this).apply {
-            cancel(galleryID)
-            queue.add(galleryID)
-        }
+    private var update = true
+    private fun initDownloadListener() {
+        CoroutineScope(Dispatchers.Main).launch {
+            while (update) {
+                delay(1000)
 
-        timer.schedule(1000, 1000) {
-            if (worker.progress.indexOfKey(galleryID) < 0)  //loading
-                return@schedule
+                val downloader = downloader ?: continue
 
-            if (worker.progress[galleryID] == null) {      //Gallery not found
-                timer.cancel()
-                Snackbar
-                    .make(reader_layout, R.string.reader_failed_to_find_gallery, Snackbar.LENGTH_INDEFINITE)
-                    .show()
-            }
+                if (!downloader.progress.containsKey(galleryID))  //loading
+                    continue
+
+                if (downloader.progress[galleryID]?.isEmpty() == true) {      //Gallery not found
+                    update = false
+                    Snackbar
+                        .make(reader_layout, R.string.reader_failed_to_find_gallery, Snackbar.LENGTH_INDEFINITE)
+                        .show()
+
+                    return@launch
+                }
 
-            runOnUiThread {
                 reader_download_progressbar.max = reader_recyclerview.adapter?.itemCount ?: 0
-                reader_download_progressbar.progress = worker.progress[galleryID]?.count { it.isInfinite() } ?: 0
-                reader_progressbar.max = reader_recyclerview.adapter?.itemCount ?: 0
+                reader_download_progressbar.progress =
+                    downloader.progress[galleryID]?.count { it.isInfinite() } ?: 0
 
                 if (title == getString(R.string.reader_loading)) {
-                    val reader = Cache(this@ReaderActivity).getReaderOrNull(galleryID)
+                    val reader = cache.metadata.reader
 
                     if (reader != null) {
-
-                        with (reader_recyclerview.adapter as ReaderAdapter) {
+                        with(reader_recyclerview.adapter as ReaderAdapter) {
                             this.reader = reader
                             notifyDataSetChanged()
                         }
 
                         title = reader.galleryInfo.title
-                        menu?.findItem(R.id.reader_menu_page_indicator)?.title = "$currentPage/${reader.galleryInfo.files.size}"
+                        menu?.findItem(R.id.reader_menu_page_indicator)?.title =
+                            "$currentPage/${reader.galleryInfo.files.size}"
 
-                        menu?.findItem(R.id.reader_type)?.icon = ContextCompat.getDrawable(this@ReaderActivity,
+                        menu?.findItem(R.id.reader_type)?.icon = ContextCompat.getDrawable(
+                            this@ReaderActivity,
                             when (reader.code) {
                                 Code.HITOMI -> R.drawable.hitomi
                                 Code.HIYOBI -> R.drawable.ic_hiyobi
                                 else -> android.R.color.transparent
-                            })
+                            }
+                        )
                     }
                 }
 
-                if (worker.progress[galleryID]?.all { it.isInfinite() } == true) {   //Download finished
+                if (downloader.isCompleted(galleryID)) {   //Download finished
                     reader_download_progressbar.visibility = View.GONE
 
                     animateDownloadFAB(false)
@@ -317,7 +330,7 @@ class ReaderActivity : AppCompatActivity() {
 
     private fun initView() {
         with(reader_recyclerview) {
-            adapter = ReaderAdapter(Glide.with(this@ReaderActivity), galleryID, this@ReaderActivity).apply {
+            adapter = ReaderAdapter(this@ReaderActivity, galleryID).apply {
                 onItemClickListener = {
                     if (isScroll) {
                         isScroll = false
@@ -346,26 +359,24 @@ class ReaderActivity : AppCompatActivity() {
                         return
                     currentPage = layoutManager.findFirstVisibleItemPosition()+1
                     menu?.findItem(R.id.reader_menu_page_indicator)?.title = "$currentPage/${recyclerView.adapter!!.itemCount}"
-                    this@ReaderActivity.reader_progressbar.progress = currentPage
+
                 }
             })
         }
 
         with(reader_fab_download) {
-            animateDownloadFAB(Cache(context).isDownloading(galleryID)) //If download in progress, animate button
+            animateDownloadFAB(DownloadManager.getInstance(this@ReaderActivity).getDownloadFolder(galleryID) != null) //If download in progress, animate button
 
             setOnClickListener {
-                if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean("cache_disable", false))
-                    Toast.makeText(context, R.string.settings_download_when_cache_disable_warning, Toast.LENGTH_SHORT).show()
-                else {
-                    if (Cache(context).isDownloading(galleryID)) {
-                        Cache(context).setDownloading(galleryID, false)
+                val downloadManager = DownloadManager.getInstance(this@ReaderActivity)
 
-                        animateDownloadFAB(false)
-                    } else {
-                        Cache(context).setDownloading(galleryID, true)
-                        animateDownloadFAB(true)
-                    }
+                if (downloadManager.isDownloading(galleryID)) {
+                    downloadManager.deleteDownloadFolder(galleryID)
+                    animateDownloadFAB(false)
+                } else {
+                    downloadManager.addDownloadFolder(galleryID)
+                    DownloadService.download(context, galleryID, true)
+                    animateDownloadFAB(true)
                 }
             }
         }
@@ -373,9 +384,26 @@ class ReaderActivity : AppCompatActivity() {
         with(reader_fab_retry) {
             setImageResource(R.drawable.refresh)
             setOnClickListener {
-                DownloadWorker.getInstance(context).let {
-                    it.cancel(galleryID)
-                    it.queue.add(galleryID)
+                DownloadService.download(context, galleryID)
+            }
+        }
+
+        with(reader_fab_auto) {
+            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)
                 }
             }
         }
@@ -397,10 +425,22 @@ class ReaderActivity : AppCompatActivity() {
                 flags = flags or WindowManager.LayoutParams.FLAG_FULLSCREEN
                 supportActionBar?.hide()
                 this@ReaderActivity.reader_fab.visibility = View.INVISIBLE
+                this@ReaderActivity.scroller.let {
+                    it.handleWidth = resources.getDimensionPixelSize(R.dimen.thumb_height)
+                    it.handleHeight = resources.getDimensionPixelSize(R.dimen.thumb_width)
+                    it.handleDrawable = ContextCompat.getDrawable(this@ReaderActivity, R.drawable.thumb_horizontal)
+                    it.fastScrollDirection = RecyclerViewFastScroller.FastScrollDirection.HORIZONTAL
+                }
             } else {
                 flags = flags and WindowManager.LayoutParams.FLAG_FULLSCREEN.inv()
                 supportActionBar?.show()
                 this@ReaderActivity.reader_fab.visibility = View.VISIBLE
+                this@ReaderActivity.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
@@ -415,7 +455,7 @@ class ReaderActivity : AppCompatActivity() {
             reader_recyclerview.layoutManager = LinearLayoutManager(this)
         } else {
             snapHelper.attachToRecyclerView(reader_recyclerview)
-            reader_recyclerview.layoutManager = LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false)
+            reader_recyclerview.layoutManager = LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, Preferences["rtl", false])
         }
 
         (reader_recyclerview.layoutManager as LinearLayoutManager).scrollToPositionWithOffset(currentPage-1, 0)
@@ -428,8 +468,7 @@ class ReaderActivity : AppCompatActivity() {
 
                 icon?.registerAnimationCallback(object : Animatable2Compat.AnimationCallback() {
                     override fun onAnimationEnd(drawable: Drawable?) {
-                        val worker = DownloadWorker.getInstance(context)
-                        if (worker.progress[galleryID]?.all { it.isInfinite() } == true) // If download is finished, stop animating
+                        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)
@@ -450,4 +489,120 @@ class ReaderActivity : AppCompatActivity() {
             }
         }
     }
+
+    val cameraCallback: (List<Face>) -> Unit = callback@{ faces ->
+        eye_card.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(eye_card) {
+                    left_eye.setImageDrawable(it)
+                    right_eye.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(eye_card) {
+            left_eye.setImageDrawable(
+                ContextCompat.getDrawable(
+                    context,
+                    if (left) R.drawable.eye else R.drawable.eye_closed
+                )
+            )
+            right_eye.setImageDrawable(
+                ContextCompat.getDrawable(
+                    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) {
+            (this@ReaderActivity.reader_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 = this@ReaderActivity.eye_card
+        when (camera) {
+            null -> {
+                reader_fab_auto.labelText = getString(R.string.reader_fab_auto_cancel)
+                reader_fab_auto.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 -> {
+                reader_fab_auto.labelText = getString(R.string.reader_fab_auto)
+                reader_fab_auto.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

@@ -18,38 +18,15 @@
 
 package xyz.quaver.pupil.ui
 
-import android.annotation.SuppressLint
-import android.app.Activity
-import android.content.Intent
-import android.content.pm.PackageManager
-import android.os.Build
 import android.os.Bundle
 import android.view.MenuItem
-import android.view.WindowManager
-import androidx.appcompat.app.AppCompatActivity
-import androidx.preference.PreferenceManager
-import com.google.android.material.snackbar.Snackbar
-import kotlinx.android.synthetic.main.settings_activity.*
-import kotlinx.serialization.builtins.list
-import kotlinx.serialization.builtins.serializer
-import net.rdrei.android.dirchooser.DirectoryChooserActivity
-import xyz.quaver.pupil.Pupil
 import xyz.quaver.pupil.R
-import xyz.quaver.pupil.ui.fragment.LockSettingsFragment
 import xyz.quaver.pupil.ui.fragment.SettingsFragment
-import xyz.quaver.pupil.util.*
-import java.io.File
-import java.nio.charset.Charset
 
-class SettingsActivity : AppCompatActivity() {
+class SettingsActivity : BaseActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-
-        window.setFlags(
-            WindowManager.LayoutParams.FLAG_SECURE,
-            WindowManager.LayoutParams.FLAG_SECURE)
-
         setContentView(R.layout.settings_activity)
         supportFragmentManager
             .beginTransaction()
@@ -58,157 +35,11 @@ class SettingsActivity : AppCompatActivity() {
         supportActionBar?.setDisplayHomeAsUpEnabled(true)
     }
 
-    override fun onResume() {
-        val preferences = PreferenceManager.getDefaultSharedPreferences(this)
-
-        if (preferences.getBoolean("security_mode", false))
-            window.setFlags(
-                WindowManager.LayoutParams.FLAG_SECURE,
-                WindowManager.LayoutParams.FLAG_SECURE)
-        else
-            window.clearFlags(WindowManager.LayoutParams.FLAG_SECURE)
-        super.onResume()
-    }
-
-    override fun onOptionsItemSelected(item: MenuItem?): Boolean {
-        when (item?.itemId) {
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        when (item.itemId) {
             android.R.id.home -> onBackPressed()
         }
 
         return true
     }
-
-    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
-        when(requestCode) {
-            REQUEST_LOCK -> {
-                if (resultCode == Activity.RESULT_OK) {
-                    supportFragmentManager
-                        .beginTransaction()
-                        .replace(R.id.settings, LockSettingsFragment())
-                        .addToBackStack("Lock")
-                        .commitAllowingStateLoss()
-                }
-            }
-            REQUEST_RESTORE -> {
-                if (resultCode == Activity.RESULT_OK) {
-                    val uri = data?.data ?: return
-
-                    try {
-                        val str = contentResolver.openInputStream(uri).use { inputStream ->
-                            inputStream!!
-
-                            inputStream.readBytes().toString(Charset.defaultCharset())
-                        }
-
-                        (application as Pupil).favorites.addAll(json.parse(Int.serializer().list, str).also {
-                            Snackbar.make(
-                                window.decorView,
-                                getString(R.string.settings_restore_successful, it.size),
-                                Snackbar.LENGTH_LONG
-                            ).show()
-                        })
-                    } catch (e: Exception) {
-                        Snackbar.make(
-                            window.decorView,
-                            R.string.settings_restore_failed,
-                            Snackbar.LENGTH_LONG
-                        ).show()
-                    }
-                }
-            }
-            REQUEST_DOWNLOAD_FOLDER -> {
-                if (resultCode == Activity.RESULT_OK) {
-                    data?.data?.also { uri ->
-                        val takeFlags: Int =
-                            intent.flags and (Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
-
-                        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT)
-                            contentResolver.takePersistableUriPermission(uri, takeFlags)
-
-                        val file = uri.toFile(this)
-
-                        if (file?.canWrite() != true)
-                            Snackbar.make(
-                                settings,
-                                R.string.settings_dl_location_not_writable,
-                                Snackbar.LENGTH_LONG
-                            ).show()
-                        else
-                            PreferenceManager.getDefaultSharedPreferences(this).edit()
-                                .putString("dl_location", file.canonicalPath)
-                                .apply()
-                    }
-                }
-            }
-            REQUEST_DOWNLOAD_FOLDER_OLD -> {
-                if (resultCode == DirectoryChooserActivity.RESULT_CODE_DIR_SELECTED) {
-                    val directory = data?.getStringExtra(DirectoryChooserActivity.RESULT_SELECTED_DIR)!!
-
-                    if (!File(directory).canWrite())
-                        Snackbar.make(
-                            settings,
-                            R.string.settings_dl_location_not_writable,
-                            Snackbar.LENGTH_LONG
-                        ).show()
-                    else
-                        PreferenceManager.getDefaultSharedPreferences(this).edit()
-                            .putString("dl_location", File(directory).canonicalPath)
-                            .apply()
-                }
-            }
-            REQUEST_IMPORT_OLD_GALLERIES -> {
-                if (resultCode == Activity.RESULT_OK) {
-                    data?.data?.also { uri ->
-                        val takeFlags: Int =
-                            intent.flags and (Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
-
-                        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT)
-                            contentResolver.takePersistableUriPermission(uri, takeFlags)
-
-                        val file = uri.toFile(this)
-
-                        if (file?.canRead() != true)
-                            Snackbar.make(
-                                settings,
-                                resources.getText(R.string.import_old_galleries_folder_not_readable),
-                                Snackbar.LENGTH_LONG
-                            ).show()
-                        else
-                            importOldGalleries(this, file)
-                    }
-                }
-            }
-            REQUEST_IMPORT_OLD_GALLERIES_OLD -> {
-                if (resultCode == DirectoryChooserActivity.RESULT_CODE_DIR_SELECTED) {
-                    val directory = data?.getStringExtra(DirectoryChooserActivity.RESULT_SELECTED_DIR)!!
-
-                    if (!File(directory).canRead())
-                        Snackbar.make(
-                            settings,
-                            resources.getText(R.string.import_old_galleries_folder_not_readable),
-                            Snackbar.LENGTH_LONG
-                        ).show()
-                    else {
-                        importOldGalleries(this, File(directory))
-                    }
-                }
-            }
-            else -> super.onActivityResult(requestCode, resultCode, data)
-        }
-    }
-
-    @SuppressLint("InlinedApi")
-    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
-        when (requestCode) {
-            REQUEST_WRITE_PERMISSION_AND_SAF -> {
-                if (grantResults.firstOrNull() == PackageManager.PERMISSION_GRANTED) {
-                    val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE).apply {
-                        putExtra("android.content.extra.SHOW_ADVANCED", true)
-                    }
-
-                    startActivityForResult(intent, REQUEST_DOWNLOAD_FOLDER)
-                }
-            }
-        }
-    }
 }

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

@@ -28,11 +28,11 @@ import android.view.LayoutInflater
 import android.view.View
 import android.widget.ArrayAdapter
 import androidx.appcompat.app.AlertDialog
-import androidx.preference.PreferenceManager
 import kotlinx.android.synthetic.main.dialog_default_query.*
 import kotlinx.android.synthetic.main.dialog_default_query.view.*
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.types.Tags
+import xyz.quaver.pupil.util.Preferences
 
 class DefaultQueryDialog(context : Context) : AlertDialog(context) {
 
@@ -82,9 +82,8 @@ class DefaultQueryDialog(context : Context) : AlertDialog(context) {
 
     @SuppressLint("InflateParams")
     private fun build() : View {
-        val preferences = PreferenceManager.getDefaultSharedPreferences(context)
         val tags = Tags.parse(
-            preferences.getString("default_query", "") ?: ""
+            Preferences["default_query"]
         )
 
         val view = LayoutInflater.from(context).inflate(R.layout.dialog_default_query, null)

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

@@ -0,0 +1,74 @@
+/*
+ *     Pupil, Hitomi.la viewer for Android
+ *     Copyright (C) 2020  tom5079
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package xyz.quaver.pupil.ui.dialog
+
+import android.annotation.SuppressLint
+import android.app.Dialog
+import android.os.Bundle
+import android.view.View
+import android.view.ViewGroup
+import androidx.core.widget.addTextChangedListener
+import androidx.fragment.app.DialogFragment
+import com.google.android.material.snackbar.Snackbar
+import kotlinx.android.synthetic.main.dialog_download_folder_name.view.*
+import kotlinx.coroutines.runBlocking
+import xyz.quaver.pupil.R
+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() {
+
+    @SuppressLint("InflateParams")
+    private fun build(): View {
+        val galleryID = Cache.instances.let { if (it.size == 0) 1199708 else it.keys.elementAt((0 until it.size).random()) }
+        val galleryBlock = runBlocking {
+            Cache.getInstance(requireContext(), galleryID).getGalleryBlock()
+        }
+
+        return layoutInflater.inflate(R.layout.dialog_download_folder_name, null).apply {
+            message.text = getString(R.string.settings_download_folder_name_message, formatMap.keys.toString(), galleryBlock?.formatDownloadFolder() ?: "")
+            edittext.setText(Preferences["download_folder_name", "[-id-] -title-"])
+            edittext.addTextChangedListener {
+                message.text = getString(R.string.settings_download_folder_name_message, formatMap.keys.toString(), galleryBlock?.formatDownloadFolderTest(it.toString()) ?: "")
+            }
+            ok_button.setOnClickListener {
+                val newValue = edittext.text.toString()
+
+                if ((newValue as? String)?.contains("/") != false) {
+                    Snackbar.make(this, R.string.settings_invalid_download_folder_name, Snackbar.LENGTH_SHORT).show()
+                    return@setOnClickListener
+                }
+
+                Preferences["download_folder_name"] = edittext.text.toString()
+
+                dismiss()
+            }
+        }
+    }
+
+    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog =
+       Dialog(requireContext()).apply {
+           setContentView(build())
+           window?.attributes?.width = ViewGroup.LayoutParams.MATCH_PARENT
+       }
+
+}

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

@@ -1,138 +0,0 @@
-/*
- *     Pupil, Hitomi.la viewer for Android
- *     Copyright (C) 2020  tom5079
- *
- *     This program is free software: you can redistribute it and/or modify
- *     it under the terms of the GNU General Public License as published by
- *     the Free Software Foundation, either version 3 of the License, or
- *     (at your option) any later version.
- *
- *     This program is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public License
- *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-package xyz.quaver.pupil.ui.dialog
-
-import android.Manifest
-import android.annotation.SuppressLint
-import android.app.Activity
-import android.app.Dialog
-import android.content.Intent
-import android.content.pm.PackageManager
-import android.os.Build
-import android.os.Bundle
-import android.view.View
-import android.widget.LinearLayout
-import android.widget.RadioButton
-import androidx.appcompat.app.AlertDialog
-import androidx.core.app.ActivityCompat
-import androidx.core.content.ContextCompat
-import androidx.preference.PreferenceManager
-import kotlinx.android.synthetic.main.item_dl_location.view.*
-import net.rdrei.android.dirchooser.DirectoryChooserActivity
-import net.rdrei.android.dirchooser.DirectoryChooserConfig
-import xyz.quaver.pupil.R
-import xyz.quaver.pupil.util.*
-import java.io.File
-
-@SuppressLint("InflateParams")
-class DownloadLocationDialog(val activity: Activity) : AlertDialog(activity) {
-
-    private val preference = PreferenceManager.getDefaultSharedPreferences(context)
-    private val buttons = mutableListOf<Pair<RadioButton, File?>>()
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        setTitle(R.string.settings_dl_location)
-
-        setView(build())
-
-        setButton(Dialog.BUTTON_POSITIVE, context.getText(android.R.string.ok)) { _, _ -> }
-
-        super.onCreate(savedInstanceState)
-    }
-
-    private fun build() : View {
-        val view = layoutInflater.inflate(R.layout.dialog_dl_location, null) as LinearLayout
-
-        val externalFilesDirs = ContextCompat.getExternalFilesDirs(context, null)
-
-        externalFilesDirs.forEachIndexed { index, dir ->
-
-            dir ?: return@forEachIndexed
-
-            view.addView(layoutInflater.inflate(R.layout.item_dl_location, view, false).apply {
-                location_type.text = context.getString(when (index) {
-                    0 -> R.string.settings_dl_location_internal
-                    else -> R.string.settings_dl_location_removable
-                })
-                location_available.text = context.getString(
-                    R.string.settings_dl_location_available,
-                    byteToString(dir.freeSpace)
-                )
-                setOnClickListener {
-                    buttons.forEach { pair ->
-                        pair.first.isChecked = false
-                    }
-                    button.performClick()
-                    preference.edit().putString("dl_location", dir.canonicalPath).apply()
-                }
-                buttons.add(button to dir)
-            })
-        }
-
-        view.addView(layoutInflater.inflate(R.layout.item_dl_location, view, false).apply {
-            location_type.text = context.getString(R.string.settings_dl_location_custom)
-            setOnClickListener {
-                buttons.forEach { pair ->
-                    pair.first.isChecked = false
-                }
-                button.performClick()
-
-                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
-
-                    if (ContextCompat.checkSelfPermission(context, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED)
-                        ActivityCompat.requestPermissions(activity, arrayOf(Manifest.permission.WRITE_EXTERNAL_STORAGE), REQUEST_WRITE_PERMISSION_AND_SAF)
-                    else {
-                        val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE).apply {
-                            putExtra("android.content.extra.SHOW_ADVANCED", true)
-                        }
-
-                        activity.startActivityForResult(intent, REQUEST_DOWNLOAD_FOLDER)
-                    }
-
-                    dismiss()
-                } else {    // Can't use SAF on old Androids!
-                    val config = DirectoryChooserConfig.builder()
-                        .newDirectoryName("Pupil")
-                        .allowNewDirectoryNameModification(true)
-                        .build()
-
-                    val intent = Intent(context, DirectoryChooserActivity::class.java).apply {
-                        putExtra(DirectoryChooserActivity.EXTRA_CONFIG, config)
-                    }
-
-                    activity.startActivityForResult(intent, REQUEST_DOWNLOAD_FOLDER_OLD)
-                    dismiss()
-                }
-            }
-            buttons.add(button to null)
-        })
-
-        externalFilesDirs.indexOfFirst {
-            it.canonicalPath == getDownloadDirectory(context).canonicalPath
-        }.let { index ->
-            if (index < 0)
-                buttons.first().first.isChecked = true
-            else
-                buttons[index].first.isChecked = true
-        }
-
-        return view
-    }
-
-}

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

@@ -0,0 +1,196 @@
+/*
+ *     Pupil, Hitomi.la viewer for Android
+ *     Copyright (C) 2020  tom5079
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package xyz.quaver.pupil.ui.dialog
+
+import android.annotation.SuppressLint
+import android.app.Activity
+import android.app.Dialog
+import android.content.Intent
+import android.os.Build
+import android.os.Bundle
+import android.view.View
+import android.widget.LinearLayout
+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 kotlinx.android.synthetic.main.dialog_download_folder_name.view.*
+import kotlinx.android.synthetic.main.item_download_folder.view.*
+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.util.Preferences
+import xyz.quaver.pupil.util.byteToString
+import xyz.quaver.pupil.util.downloader.DownloadManager
+import xyz.quaver.pupil.util.migrate
+import java.io.File
+
+class DownloadLocationDialogFragment : DialogFragment() {
+    private val entries = mutableMapOf<File?, View>()
+
+    private val requestDownloadFolderLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
+        if (it.resultCode == Activity.RESULT_OK) {
+            val activity = activity ?: return@registerForActivityResult
+            val context = context ?: return@registerForActivityResult
+            val dialog = dialog ?: return@registerForActivityResult
+
+            it.data?.data?.also { uri ->
+                val takeFlags: Int =
+                    activity.intent.flags and
+                            (Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
+
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT)
+                    context.contentResolver.takePersistableUriPermission(uri, takeFlags)
+
+                if (kotlin.runCatching { FileX(context, uri).canWrite() }.getOrDefault(false)) {
+                    entries[null]?.location_available?.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]!!.location_available.text = downloadFolder
+                }
+            }
+        }
+    }
+
+    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]!!.location_available.text = downloadFolder
+            }
+            else {
+                entries[null]?.location_available?.text = directory
+                Preferences["download_folder"] = File(directory).toURI().toString()
+            }
+        }
+    }
+
+    @SuppressLint("InflateParams")
+    private fun build() : View? {
+        val context = context ?: return null
+
+        val view = layoutInflater.inflate(R.layout.dialog_download_folder, null) as LinearLayout
+
+        val externalFilesDirs = ContextCompat.getExternalFilesDirs(context, null)
+
+        externalFilesDirs.forEachIndexed { index, dir ->
+            dir ?: return@forEachIndexed
+
+            view.addView(layoutInflater.inflate(R.layout.item_download_folder, view, false).apply {
+                location_type.text = context.getString(when (index) {
+                    0 -> R.string.settings_download_folder_internal
+                    else -> R.string.settings_download_folder_removable
+                })
+                location_available.text = context.getString(
+                    R.string.settings_download_folder_available,
+                    byteToString(dir.freeSpace)
+                )
+                setOnClickListener {
+                    entries.values.forEach {
+                        it.button.isChecked = false
+                    }
+                    button.performClick()
+                    Preferences["download_folder"] = dir.toUri().toString()
+                }
+                entries[dir] = this
+            })
+        }
+
+        view.addView(layoutInflater.inflate(R.layout.item_download_folder, view, false).apply {
+            location_type.text = context.getString(R.string.settings_download_folder_custom)
+            setOnClickListener {
+                entries.values.forEach {
+                    it.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(context).downloadFolder.canonicalPath
+        val key = entries.keys.firstOrNull { it?.canonicalPath == downloadFolder }
+        entries[key]!!.button.isChecked = true
+        if (key == null) entries[key]!!.location_available.text = downloadFolder
+
+        return view
+    }
+
+    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+        val builder = AlertDialog.Builder(requireContext())
+
+        builder
+            .setTitle(R.string.settings_download_folder)
+            .setView(build())
+            .setPositiveButton(requireContext().getText(android.R.string.ok)) { _, _ ->
+                if (Preferences["download_folder", ""].isEmpty())
+                    Preferences["download_folder"] = context?.getExternalFilesDir(null)?.toUri()?.toString() ?: ""
+
+                DownloadManager.getInstance(requireContext()).migrate()
+            }
+
+        isCancelable = false
+
+        return builder.create()
+    }
+}

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

@@ -18,19 +18,19 @@
 
 package xyz.quaver.pupil.ui.dialog
 
-import android.app.Dialog
 import android.content.Context
 import android.content.Intent
+import android.net.Uri
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import android.widget.LinearLayout.LayoutParams
+import androidx.appcompat.app.AlertDialog
 import androidx.core.content.ContextCompat
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import androidx.viewpager2.widget.ViewPager2
-import com.bumptech.glide.RequestManager
-import com.google.android.material.chip.Chip
 import com.google.android.material.snackbar.Snackbar
 import kotlinx.android.synthetic.main.dialog_gallery.*
 import kotlinx.android.synthetic.main.dialog_gallery_details.view.*
@@ -38,29 +38,25 @@ import kotlinx.android.synthetic.main.dialog_gallery_dotindicator.view.*
 import kotlinx.android.synthetic.main.item_gallery_details.view.*
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.async
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 import xyz.quaver.hitomi.Gallery
-import xyz.quaver.hitomi.GalleryBlock
 import xyz.quaver.hitomi.getGallery
-import xyz.quaver.pupil.BuildConfig
-import xyz.quaver.pupil.Pupil
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.adapters.GalleryBlockAdapter
 import xyz.quaver.pupil.adapters.ThumbnailPageAdapter
+import xyz.quaver.pupil.favoriteTags
+import xyz.quaver.pupil.histories
 import xyz.quaver.pupil.types.Tag
 import xyz.quaver.pupil.ui.ReaderActivity
+import xyz.quaver.pupil.ui.view.TagChip
 import xyz.quaver.pupil.util.ItemClickSupport
-import xyz.quaver.pupil.util.download.Cache
+import xyz.quaver.pupil.util.downloader.Cache
 import xyz.quaver.pupil.util.wordCapitalize
+import java.util.*
+import kotlin.collections.ArrayList
 
-class GalleryDialog(context: Context, private val glide: RequestManager, private val galleryID: Int) : Dialog(context) {
-
-    private val languages = context.resources.getStringArray(R.array.languages).map {
-        it.split("|").let { split ->
-            Pair(split[0], split[1])
-        }
-    }.toMap()
+class GalleryDialog(context: Context, private val galleryID: Int) : AlertDialog(context) {
 
     val onChipClickedHandler = ArrayList<((Tag) -> (Unit))>()
 
@@ -81,7 +77,6 @@ class GalleryDialog(context: Context, private val glide: RequestManager, private
                 context.startActivity(Intent(context, ReaderActivity::class.java).apply {
                     putExtra("galleryID", galleryID)
                 })
-                (context.applicationContext as Pupil).histories.add(galleryID)
             }
         }
 
@@ -111,26 +106,26 @@ class GalleryDialog(context: Context, private val glide: RequestManager, private
                         }
                     }
 
-                    glide
-                        .load(gallery.cover)
-                        .apply {
-                            if (BuildConfig.CENSOR)
-                                override(5, 8)
-                        }.into(gallery_cover)
+                    gallery_cover.showImage(Uri.parse(gallery.cover))
 
                     addDetails(gallery)
                     addThumbnails(gallery)
                     addRelated(gallery)
                 }
             } catch (e: Exception) {
-                Snackbar.make(gallery_layout, R.string.unable_to_connect, Snackbar.LENGTH_INDEFINITE).show()
+                Snackbar.make(gallery_layout, R.string.unable_to_connect, Snackbar.LENGTH_INDEFINITE).apply {
+                    if (Locale.getDefault().language == "ko")
+                        setAction(context.getText(R.string.https_text)) {
+                            context.startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(context.getString(R.string.https))))
+                        }
+                }.show()
             }
         }
     }
 
     private fun addDetails(gallery: Gallery) {
         val inflater = LayoutInflater.from(context)
-        
+
         inflater.inflate(R.layout.dialog_gallery_details, gallery_contents, false).apply {
             gallery_details.setText(R.string.gallery_details)
 
@@ -148,7 +143,18 @@ class GalleryDialog(context: Context, private val glide: RequestManager, private
                     listOf(gallery.language).map { Tag("language", it) },
                     gallery.series.map { Tag("series", it) },
                     gallery.characters.map { Tag("character", it) },
-                    gallery.tags.map {
+                    gallery.tags.sortedBy {
+                        val tag = Tag.parse(it)
+
+                        if (favoriteTags.contains(tag))
+                            -1
+                        else
+                            when(Tag.parse(it).area) {
+                                "female" -> 0
+                                "male" -> 1
+                                else -> 2
+                            }
+                    }.map {
                         Tag.parse(it).let { tag ->
                             when {
                                 tag.area != null -> tag
@@ -165,28 +171,7 @@ class GalleryDialog(context: Context, private val glide: RequestManager, private
 
                     content.forEach { tag ->
                         gallery_details_tags.addView(
-                            Chip(context).apply {
-                                chipIcon = when(tag.area) {
-                                    "male" -> {
-                                        setChipBackgroundColorResource(R.color.material_blue_700)
-                                        setTextColor(ContextCompat.getColor(context, android.R.color.white))
-                                        ContextCompat.getDrawable(context, R.drawable.gender_male)
-                                    }
-                                    "female" -> {
-                                        setChipBackgroundColorResource(R.color.material_pink_600)
-                                        setTextColor(ContextCompat.getColor(context, android.R.color.white))
-                                        ContextCompat.getDrawable(context, R.drawable.gender_female)
-                                    }
-                                    else -> null
-                                }
-
-                                text = when (tag.area) {
-                                    "language" -> languages[tag.tag]
-                                    else -> tag.tag.wordCapitalize()
-                                }
-
-                                setEnsureMinTouchTargetSize(false)
-
+                            TagChip(context, tag).apply {
                                 setOnClickListener {
                                     onChipClickedHandler.forEach { handler ->
                                         handler.invoke(tag)
@@ -211,7 +196,8 @@ class GalleryDialog(context: Context, private val glide: RequestManager, private
             gallery_details.setText(R.string.gallery_thumbnails)
 
             val pager = ViewPager2(context).apply {
-                adapter = ThumbnailPageAdapter(glide, gallery.thumbnails)
+                adapter = ThumbnailPageAdapter(gallery.thumbnails)
+                layoutParams = ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT)
             }
 
             gallery_details_contents.addView(
@@ -229,9 +215,9 @@ class GalleryDialog(context: Context, private val glide: RequestManager, private
 
     private fun addRelated(gallery: Gallery) {
         val inflater = LayoutInflater.from(context)
-        val galleries = ArrayList<GalleryBlock>()
+        val galleries = ArrayList<Int>()
 
-        val adapter = GalleryBlockAdapter(glide, galleries).apply {
+        val adapter = GalleryBlockAdapter(galleries).apply {
             onChipClickedHandler.add { tag ->
                 this@GalleryDialog.onChipClickedHandler.forEach { handler ->
                     handler.invoke(tag)
@@ -239,19 +225,6 @@ class GalleryDialog(context: Context, private val glide: RequestManager, private
             }
         }
 
-        CoroutineScope(Dispatchers.Main).launch {
-            gallery.related.forEachIndexed { i, galleryID ->
-                async(Dispatchers.IO) {
-                    Cache(context).getGalleryBlock(galleryID)
-                }.let {
-                    val galleryBlock = it.await() ?: return@let
-
-                    galleries.add(galleryBlock)
-                    adapter.notifyItemInserted(i)
-                }
-            }
-        }
-
         inflater.inflate(R.layout.dialog_gallery_details, gallery_contents, false).apply {
             gallery_details.setText(R.string.gallery_related)
 
@@ -259,19 +232,14 @@ class GalleryDialog(context: Context, private val glide: RequestManager, private
                 layoutManager = LinearLayoutManager(context)
                 this.adapter = adapter
 
-                ItemClickSupport.addTo(this)
-                    .setOnItemClickListener { _, position, _ ->
+                ItemClickSupport.addTo(this).apply {
+                    onItemClickListener = { _, position, _ ->
                         context.startActivity(Intent(context, ReaderActivity::class.java).apply {
-                            putExtra("galleryID", galleries[position].id)
+                            putExtra("galleryID", galleries[position])
                         })
-                        (context.applicationContext as Pupil).histories.add(galleries[position].id)
                     }
-                    .setOnItemLongClickListener { _, position, _ ->
-                        GalleryDialog(
-                            context,
-                            glide,
-                            galleries[position].id
-                        ).apply {
+                    onItemLongClickListener = { _, position, _ ->
+                        GalleryDialog(context, galleries[position]).apply {
                             onChipClickedHandler.add { tag ->
                                 this@GalleryDialog.onChipClickedHandler.forEach { it.invoke(tag) }
                             }
@@ -279,12 +247,25 @@ class GalleryDialog(context: Context, private val glide: RequestManager, private
 
                         true
                     }
+                }
             }.let {
                 gallery_details_contents.addView(it, LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT))
             }
         }.let {
             gallery_contents.addView(it)
         }
+
+        CoroutineScope(Dispatchers.IO).launch {
+            gallery.related.forEach { galleryID ->
+                Cache.getInstance(context, galleryID).getGalleryBlock()?.let {
+                    galleries.add(galleryID)
+                }
+            }
+
+            withContext(Dispatchers.Main) {
+                adapter.notifyDataSetChanged()
+            }
+        }
     }
 
 }

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

@@ -24,13 +24,13 @@ import android.content.Context
 import android.os.Bundle
 import android.view.View
 import androidx.appcompat.app.AlertDialog
-import androidx.preference.PreferenceManager
 import androidx.recyclerview.widget.DividerItemDecoration
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.adapters.MirrorAdapter
+import xyz.quaver.pupil.util.Preferences
 
 class MirrorDialog(context: Context) : AlertDialog(context) {
 
@@ -82,10 +82,7 @@ class MirrorDialog(context: Context) : AlertDialog(context) {
                 }
 
                 onItemMoved = {
-                    PreferenceManager.getDefaultSharedPreferences(context)
-                        .edit()
-                        .putString("mirrors", it.joinToString(">"))
-                        .apply()
+                    Preferences["mirrors"] = it.joinToString(">")
                 }
             }
         }

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

@@ -27,31 +27,31 @@ import android.view.View
 import android.view.ViewGroup
 import android.widget.AdapterView
 import android.widget.ArrayAdapter
-import androidx.preference.PreferenceManager
+import androidx.appcompat.app.AlertDialog
 import kotlinx.android.synthetic.main.dialog_proxy.view.*
-import xyz.quaver.proxy
+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.util.Preferences
 import xyz.quaver.pupil.util.ProxyInfo
 import xyz.quaver.pupil.util.getProxyInfo
-import xyz.quaver.pupil.util.json
+import xyz.quaver.pupil.util.proxyInfo
 import java.net.Proxy
 
-class ProxyDialog(context: Context) : Dialog(context) {
+class ProxyDialog(context: Context) : AlertDialog(context) {
 
     override fun onCreate(savedInstanceState: Bundle?) {
-        val view = build()
-
-        setTitle(R.string.settings_proxy_title)
-        setContentView(view)
-
-        window?.attributes?.width = ViewGroup.LayoutParams.MATCH_PARENT
+        setView(build())
 
         super.onCreate(savedInstanceState)
     }
 
     @SuppressLint("InflateParams")
     private fun build() : View {
-        val proxyInfo = getProxyInfo(context)
+        val proxyInfo = getProxyInfo()
 
         val view = LayoutInflater.from(context).inflate(R.layout.dialog_proxy, null)
 
@@ -116,12 +116,12 @@ class ProxyDialog(context: Context) : Dialog(context) {
             }
 
             ProxyInfo(type, addr, port, username, password).let {
+                Preferences["proxy"] = Json.encodeToString(it)
 
-                PreferenceManager.getDefaultSharedPreferences(context).edit().putString("proxy",
-                    json.stringify(ProxyInfo.serializer(), it)
-                ).apply()
-
-                proxy = it.proxy()
+                clientBuilder
+                    .proxyInfo(it)
+                clientHolder = null
+                client
             }
 
             dismiss()

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

@@ -24,15 +24,14 @@ import android.widget.Toast
 import androidx.appcompat.app.AlertDialog
 import androidx.preference.Preference
 import androidx.preference.PreferenceFragmentCompat
-import androidx.preference.PreferenceManager
 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() {
+class LockSettingsFragment : PreferenceFragmentCompat() {
 
     override fun onResume() {
         super.onResume()
@@ -54,7 +53,7 @@ class LockSettingsFragment :
         if (lockManager.isEmpty()) {
             (findPreference<Preference>("lock_fingerprint") as SwitchPreferenceCompat).isChecked = false
 
-            PreferenceManager.getDefaultSharedPreferences(context).edit().putBoolean("lock_fingerprint", false).apply()
+            Preferences["lock_fingerprint"] = false
         }
     }
 
@@ -75,11 +74,11 @@ class LockSettingsFragment :
                         setTitle(R.string.warning)
                         setMessage(R.string.settings_lock_remove_message)
 
-                        setPositiveButton(android.R.string.yes) { _, _ ->
+                        setPositiveButton(android.R.string.ok) { _, _ ->
                             lockManager.remove(Lock.Type.PATTERN)
                             onResume()
                         }
-                        setNegativeButton(android.R.string.no) { _, _ -> }
+                        setNegativeButton(android.R.string.cancel) { _, _ -> }
                     }.show()
                 } else {
                     val intent = Intent(requireContext(), LockActivity::class.java).apply {
@@ -108,11 +107,11 @@ class LockSettingsFragment :
                         setTitle(R.string.warning)
                         setMessage(R.string.settings_lock_remove_message)
 
-                        setPositiveButton(android.R.string.yes) { _, _ ->
+                        setPositiveButton(android.R.string.ok) { _, _ ->
                             lockManager.remove(Lock.Type.PIN)
                             onResume()
                         }
-                        setNegativeButton(android.R.string.no) { _, _ -> }
+                        setNegativeButton(android.R.string.cancel) { _, _ -> }
                     }.show()
                 } else {
                     val intent = Intent(requireContext(), LockActivity::class.java).apply {

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 +1,196 @@
+/*
+ *     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 { (it as? FileX)?.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/SettingsFragment.kt

@@ -18,39 +18,28 @@
 
 package xyz.quaver.pupil.ui.fragment
 
-import android.Manifest
+import android.app.Activity
 import android.content.*
-import android.content.pm.PackageManager
-import android.os.Build
 import android.os.Bundle
+import android.os.LocaleList
 import android.widget.Toast
-import androidx.appcompat.app.AlertDialog
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AppCompatDelegate
-import androidx.core.app.ActivityCompat
-import androidx.core.content.ContextCompat
-import androidx.preference.Preference
-import androidx.preference.PreferenceCategory
-import androidx.preference.PreferenceFragmentCompat
-import androidx.preference.PreferenceManager
-import com.google.android.material.snackbar.Snackbar
+import androidx.core.os.LocaleListCompat
+import androidx.preference.*
+import com.google.android.gms.oss.licenses.OssLicensesMenuActivity
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
-import net.rdrei.android.dirchooser.DirectoryChooserActivity
-import net.rdrei.android.dirchooser.DirectoryChooserConfig
-import xyz.quaver.pupil.Pupil
+import xyz.quaver.io.FileX
+import xyz.quaver.io.util.getChild
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.ui.LockActivity
 import xyz.quaver.pupil.ui.SettingsActivity
-import xyz.quaver.pupil.ui.dialog.DefaultQueryDialog
-import xyz.quaver.pupil.ui.dialog.DownloadLocationDialog
-import xyz.quaver.pupil.ui.dialog.MirrorDialog
-import xyz.quaver.pupil.ui.dialog.ProxyDialog
+import xyz.quaver.pupil.ui.dialog.*
 import xyz.quaver.pupil.util.*
-import java.io.BufferedReader
-import java.io.File
-import java.io.InputStreamReader
-
+import xyz.quaver.pupil.util.downloader.DownloadManager
+import java.util.*
 
 class SettingsFragment :
     PreferenceFragmentCompat(),
@@ -58,7 +47,15 @@ class SettingsFragment :
     Preference.OnPreferenceChangeListener,
     SharedPreferences.OnSharedPreferenceChangeListener {
 
-    lateinit var sharedPreference: SharedPreferences
+    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()
@@ -78,16 +75,6 @@ class SettingsFragment :
         }
     }
 
-    private fun getDirSize(dir: File) : String {
-        return getString(R.string.settings_storage_usage,
-            Runtime.getRuntime().exec("du -hs " + dir.absolutePath).let {
-                BufferedReader(InputStreamReader(it.inputStream)).use { reader ->
-                    reader.readLine()?.split('\t')?.firstOrNull() ?: "0"
-                }
-            }
-        )
-    }
-
     override fun onPreferenceClick(preference: Preference?): Boolean {
         with (preference) {
             this ?: return false
@@ -96,79 +83,22 @@ class SettingsFragment :
                 "app_version" -> {
                     checkUpdate(activity as SettingsActivity, true)
                 }
-                "delete_cache" -> {
-                    val dir = File(requireContext().cacheDir, "imageCache")
-
-                    AlertDialog.Builder(requireContext()).apply {
-                        setTitle(R.string.warning)
-                        setMessage(R.string.settings_clear_cache_alert_message)
-                        setPositiveButton(android.R.string.yes) { _, _ ->
-                            if (dir.exists())
-                                dir.deleteRecursively()
-
-                            summary = getString(R.string.settings_storage_usage_loading)
-
-                            CoroutineScope(Dispatchers.IO).launch {
-                                getDirSize(dir).let {
-                                    launch(Dispatchers.Main) {
-                                        this@with.summary = it
-                                    }
-                                }
-                            }
-                        }
-                        setNegativeButton(android.R.string.no) { _, _ -> }
-                    }.show()
-                }
-                "delete_downloads" -> {
-                    val dir = getDownloadDirectory(requireContext())
-
-                    AlertDialog.Builder(requireContext()).apply {
-                        setTitle(R.string.warning)
-                        setMessage(R.string.settings_clear_downloads_alert_message)
-                        setPositiveButton(android.R.string.yes) { _, _ ->
-                            if (dir.exists())
-                                dir.deleteRecursively()
-
-                            summary = getString(R.string.settings_storage_usage_loading)
-
-                            CoroutineScope(Dispatchers.IO).launch {
-                                getDirSize(dir).let {
-                                    launch(Dispatchers.Main) {
-                                        this@with.summary = it
-                                    }
-                                }
-                            }
-                        }
-                        setNegativeButton(android.R.string.no) { _, _ -> }
-                    }.show()
-                }
-                "clear_history" -> {
-                    val histories = (requireContext().applicationContext as Pupil).histories
-
-                    AlertDialog.Builder(requireContext()).apply {
-                        setTitle(R.string.warning)
-                        setMessage(R.string.settings_clear_history_alert_message)
-                        setPositiveButton(android.R.string.yes) { _, _ ->
-                            histories.clear()
-                            summary = getString(R.string.settings_clear_history_summary, histories.size)
-                        }
-                        setNegativeButton(android.R.string.no) { _, _ -> }
-                    }.show()
-                }
-                "dl_location" -> {
-                    DownloadLocationDialog(requireActivity()).show()
+                "download_folder" -> {
+                    DownloadLocationDialogFragment().show(parentFragmentManager, "Download Location Dialog")
                 }
                 "default_query" -> {
                     DefaultQueryDialog(requireContext()).apply {
                         onPositiveButtonClickListener = { newTags ->
-                            sharedPreferences.edit().putString("default_query", newTags.toString()).apply()
+                            Preferences["default_query"] = newTags.toString()
                             summary = newTags.toString()
                         }
                     }.show()
                 }
                 "app_lock" -> {
-                    val intent = Intent(requireContext(), LockActivity::class.java)
-                    activity?.startActivityForResult(intent, REQUEST_LOCK)
+                    val intent = Intent(requireContext(), LockActivity::class.java).apply {
+                        putExtra("force", true)
+                    }
+                    lockLauncher.launch(intent)
                 }
                 "mirrors" -> {
                     MirrorDialog(requireContext())
@@ -178,54 +108,9 @@ class SettingsFragment :
                     ProxyDialog(requireContext())
                         .show()
                 }
-                "nomedia" -> {
-                    File(getDownloadDirectory(context), ".nomedia").createNewFile()
-                }
-                "backup" -> {
-                    File(ContextCompat.getDataDir(requireContext()), "favorites.json").copyTo(
-                        File(getDownloadDirectory(requireContext()), "favorites.json"),
-                        true
-                    )
-
-                    Snackbar.make(this@SettingsFragment.listView, R.string.settings_backup_snackbar, Snackbar.LENGTH_LONG)
-                        .show()
-                }
-                "restore" -> {
-                    val intent = Intent(Intent.ACTION_GET_CONTENT).apply {
-                        addCategory(Intent.CATEGORY_OPENABLE)
-                        type = "*/*"
-                    }
-
-                    activity?.startActivityForResult(intent, REQUEST_RESTORE)
-                }
-                "old_import_galleries" -> {
-                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
-
-                        if (ContextCompat.checkSelfPermission(requireContext(), Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED)
-                            ActivityCompat.requestPermissions(requireActivity(), arrayOf(Manifest.permission.WRITE_EXTERNAL_STORAGE), REQUEST_WRITE_PERMISSION_AND_SAF)
-                        else {
-                            val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE).apply {
-                                putExtra("android.content.extra.SHOW_ADVANCED", true)
-                            }
-
-                            activity?.startActivityForResult(intent, REQUEST_IMPORT_OLD_GALLERIES)
-                        }
-                    } else {    // Can't use SAF on old Androids!
-                        val config = DirectoryChooserConfig.builder()
-                            .newDirectoryName("Pupil")
-                            .allowNewDirectoryNameModification(true)
-                            .build()
-
-                        val intent = Intent(requireContext(), DirectoryChooserActivity::class.java).apply {
-                            putExtra(DirectoryChooserActivity.EXTRA_CONFIG, config)
-                        }
-
-                        activity?.startActivityForResult(intent, REQUEST_IMPORT_OLD_GALLERIES_OLD)
-                    }
-                }
                 "user_id" -> {
                     (context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager).setPrimaryClip(
-                        ClipData.newPlainText("user_id", sharedPreference.getString("user_id", ""))
+                        ClipData.newPlainText("user_id", Preferences.get<String>("user_id"))
                     )
                     Toast.makeText(context, R.string.settings_user_id_toast, Toast.LENGTH_SHORT).show()
                 }
@@ -241,6 +126,21 @@ class SettingsFragment :
             this ?: return false
 
             when (key) {
+                "tag_language" -> {
+                    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
@@ -262,10 +162,13 @@ class SettingsFragment :
 
             when (key) {
                 "proxy" -> {
-                    summary = getProxyInfo(requireContext()).type.name
+                    summary = context?.let { getProxyInfo().type.name }
                 }
-                "dl_location" -> {
-                    summary = getDownloadDirectory(requireContext()).canonicalPath
+                "download_folder" -> {
+                    summary = FileX(context, Preferences.get<String>("download_folder")).canonicalPath
+                }
+                "download_folder_name" -> {
+                    summary = Preferences["download_folder_name", "[-id-] -title-"]
                 }
             }
         }
@@ -274,12 +177,16 @@ class SettingsFragment :
     override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
         setPreferencesFromResource(R.xml.root_preferences, rootKey)
 
-        sharedPreference = PreferenceManager.getDefaultSharedPreferences(requireContext())
-        sharedPreference.registerOnSharedPreferenceChangeListener(this)
+        Preferences.registerOnSharedPreferenceChangeListener(this)
 
         initPreferences()
     }
 
+    override fun onDestroy() {
+        Preferences.unregisterOnSharedPreferenceChangeListener(this)
+        super.onDestroy()
+    }
+
     private fun initPreferences() {
         for (i in 0 until preferenceScreen.preferenceCount) {
 
@@ -289,7 +196,7 @@ class SettingsFragment :
                 else
                     listOf(this)
             }.forEach { preference ->
-                with (preference) {
+                with (preference) with@{
 
                     when (key) {
                         "app_version" -> {
@@ -299,47 +206,29 @@ class SettingsFragment :
 
                             onPreferenceClickListener = this@SettingsFragment
                         }
-                        "delete_cache" -> {
-                            val dir = File(requireContext().cacheDir, "imageCache")
+                        "download_folder_name" -> {
+                            summary = Preferences["download_folder_name", "[-id-] -title-"]
 
-                            summary = getString(R.string.settings_storage_usage_loading)
-                            CoroutineScope(Dispatchers.IO).launch {
-                                getDirSize(dir).let {
-                                    launch(Dispatchers.Main) {
-                                        this@with.summary = it
-                                    }
-                                }
+                            setOnPreferenceClickListener {
+                                DownloadFolderNameDialogFragment().show(requireActivity().supportFragmentManager, "Download Location Dialog")
+
+                                true
                             }
+                        }
+                        "download_folder" -> {
+                            summary = FileX(context, Preferences.get<String>("download_folder")).canonicalPath
 
                             onPreferenceClickListener = this@SettingsFragment
                         }
-                        "delete_downloads" -> {
-                            val dir = getDownloadDirectory(requireContext())
+                        "nomedia" -> {
+                            (this as SwitchPreferenceCompat).isChecked = kotlin.runCatching {
+                                DownloadManager.getInstance(context).downloadFolder.getChild(".nomedia").exists()
+                            }.getOrDefault(false)
 
-                            summary = getString(R.string.settings_storage_usage_loading)
-                            CoroutineScope(Dispatchers.IO).launch {
-                                getDirSize(dir).let {
-                                    launch(Dispatchers.Main) {
-                                        this@with.summary = it
-                                    }
-                                }
-                            }
-
-                            onPreferenceClickListener = this@SettingsFragment
-                        }
-                        "clear_history" -> {
-                            val histories = (requireActivity().application as Pupil).histories
-                            summary = getString(R.string.settings_clear_history_summary, histories.size)
-
-                            onPreferenceClickListener = this@SettingsFragment
-                        }
-                        "dl_location" -> {
-                            summary = getDownloadDirectory(requireContext()).canonicalPath
-
-                            onPreferenceClickListener = this@SettingsFragment
+                            onPreferenceChangeListener = this@SettingsFragment
                         }
                         "default_query" -> {
-                            summary = sharedPreference.getString("default_query", "") ?: ""
+                            summary = Preferences.get<String>("default_query")
 
                             onPreferenceClickListener = this@SettingsFragment
                         }
@@ -360,33 +249,49 @@ class SettingsFragment :
 
                             onPreferenceClickListener = this@SettingsFragment
                         }
+                        "tag_language" -> {
+                            this as ListPreference
+
+                            isEnabled = false
+
+                            CoroutineScope(Dispatchers.IO).launch {
+                                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
+
+                        }
                         "mirrors" -> {
                             onPreferenceClickListener = this@SettingsFragment
                         }
                         "proxy" -> {
-                            summary = getProxyInfo(requireContext()).type.name
+                            summary = getProxyInfo().type.name
 
                             onPreferenceClickListener = this@SettingsFragment
                         }
                         "dark_mode" -> {
                             onPreferenceChangeListener = this@SettingsFragment
                         }
-                        "nomedia" -> {
-                            onPreferenceClickListener = this@SettingsFragment
-                        }
-                        "backup" -> {
-                            onPreferenceClickListener = this@SettingsFragment
-                        }
-                        "restore" -> {
-                            onPreferenceClickListener = this@SettingsFragment
-                        }
                         "old_import_galleries" -> {
                             onPreferenceClickListener = this@SettingsFragment
                         }
                         "user_id" -> {
-                            summary = sharedPreference.getString("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/view/FloatingSearchView.kt

@@ -0,0 +1,218 @@
+/*
+ *     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.os.Parcelable
+import android.text.Editable
+import android.text.TextWatcher
+import android.util.AttributeSet
+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.MenuPopupHelper
+import xyz.quaver.floatingsearchview.util.view.MenuView
+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
+
+        searchInputView.addTextChangedListener(this)
+        onSearchListener = this
+        onBindSuggestionCallback = { a, b, c, d, e ->
+            onBindSuggestion(a, b, c, d, e)
+        }
+    }
+
+    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.replace(Regex("\\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/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 +1,90 @@
+/*
+ *     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 com.google.android.material.chip.Chip
+import com.google.android.material.chip.ChipGroup
+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 {
+        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)
+    }
+
+    fun refresh() {
+        this.removeAllViews()
+
+        tags.take(maxChipSize).forEach {
+            this.addView(TagChip(context, it).apply {
+                setOnClickListener {
+                    onClickListener?.invoke(this.tag)
+                }
+            })
+        }
+
+        if (maxChipSize > 0 && this.size > maxChipSize)
+            addView(moreView)
+    }
+
+    init {
+        applyAttributes(context.obtainStyledAttributes(attr, R.styleable.TagChipGroup))
+
+        refresh()
+    }
+
+}

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

@@ -1,39 +0,0 @@
-/*
- *     Pupil, Hitomi.la viewer for Android
- *     Copyright (C) 2020  tom5079
- *
- *     This program is free software: you can redistribute it and/or modify
- *     it under the terms of the GNU General Public License as published by
- *     the Free Software Foundation, either version 3 of the License, or
- *     (at your option) any later version.
- *
- *     This program is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public License
- *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-package xyz.quaver.pupil.util
-
-import kotlinx.serialization.json.Json
-import kotlinx.serialization.json.JsonConfiguration
-import okhttp3.Dispatcher
-import okhttp3.OkHttpClient
-import xyz.quaver.proxy
-import java.util.concurrent.Executors
-import java.util.concurrent.TimeUnit
-
-const val REQUEST_LOCK = 38238
-const val REQUEST_RESTORE = 16546
-const val REQUEST_IMPORT_OLD_GALLERIES = 6458
-const val REQUEST_IMPORT_OLD_GALLERIES_OLD = 5946
-const val REQUEST_DOWNLOAD_FOLDER = 3874
-const val REQUEST_DOWNLOAD_FOLDER_OLD = 3425
-const val REQUEST_WRITE_PERMISSION_AND_SAF = 13900
-
-const val NOTIFICATION_ID_UPDATE = 2345
-
-val json = Json(JsonConfiguration.Stable)

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

@@ -1,107 +0,0 @@
-package xyz.quaver.pupil.util;
-
-import android.view.View;
-import androidx.annotation.NonNull;
-import androidx.recyclerview.widget.RecyclerView;
-import xyz.quaver.pupil.R;
-
-/*
-  Source: http://www.littlerobots.nl/blog/Handle-Android-RecyclerView-Clicks/
-  USAGE:
-
-  ItemClickSupport.addTo(mRecyclerView).setOnItemClickListener(new ItemClickSupport.OnItemClickListener() {
-      @Override
-      public void onItemClicked(RecyclerView recyclerView, int position, View v) {
-          // do it
-      }
-  });
-
-*/
-public class ItemClickSupport {
-    private final RecyclerView mRecyclerView;
-    private OnItemClickListener mOnItemClickListener;
-    private OnItemLongClickListener mOnItemLongClickListener;
-    private View.OnClickListener mOnClickListener = new View.OnClickListener() {
-        @Override
-        public void onClick(View v) {
-            if (mOnItemClickListener != null) {
-                RecyclerView.ViewHolder holder = mRecyclerView.getChildViewHolder(v);
-                mOnItemClickListener.onItemClicked(mRecyclerView, holder.getAdapterPosition(), v);
-            }
-        }
-    };
-    private View.OnLongClickListener mOnLongClickListener = new View.OnLongClickListener() {
-        @Override
-        public boolean onLongClick(View v) {
-            if (mOnItemLongClickListener != null) {
-                RecyclerView.ViewHolder holder = mRecyclerView.getChildViewHolder(v);
-                return mOnItemLongClickListener.onItemLongClicked(mRecyclerView, holder.getAdapterPosition(), v);
-            }
-            return false;
-        }
-    };
-    private RecyclerView.OnChildAttachStateChangeListener mAttachListener
-            = new RecyclerView.OnChildAttachStateChangeListener() {
-        @Override
-        public void onChildViewAttachedToWindow(@NonNull View view) {
-            if (mOnItemClickListener != null) {
-                view.setOnClickListener(mOnClickListener);
-            }
-            if (mOnItemLongClickListener != null) {
-                view.setOnLongClickListener(mOnLongClickListener);
-            }
-        }
-
-        @Override
-        public void onChildViewDetachedFromWindow(@NonNull View view) {
-
-        }
-    };
-
-    private ItemClickSupport(RecyclerView recyclerView) {
-        mRecyclerView = recyclerView;
-        mRecyclerView.setTag(R.id.item_click_support, this);
-        mRecyclerView.addOnChildAttachStateChangeListener(mAttachListener);
-    }
-
-    public static ItemClickSupport addTo(RecyclerView view) {
-        ItemClickSupport support = (ItemClickSupport) view.getTag(R.id.item_click_support);
-        if (support == null) {
-            support = new ItemClickSupport(view);
-        }
-        return support;
-    }
-
-    public static ItemClickSupport removeFrom(RecyclerView view) {
-        ItemClickSupport support = (ItemClickSupport) view.getTag(R.id.item_click_support);
-        if (support != null) {
-            support.detach(view);
-        }
-        return support;
-    }
-
-    public ItemClickSupport setOnItemClickListener(OnItemClickListener listener) {
-        mOnItemClickListener = listener;
-        return this;
-    }
-
-    public ItemClickSupport setOnItemLongClickListener(OnItemLongClickListener listener) {
-        mOnItemLongClickListener = listener;
-        return this;
-    }
-
-    private void detach(RecyclerView view) {
-        view.removeOnChildAttachStateChangeListener(mAttachListener);
-        view.setTag(R.id.item_click_support, null);
-    }
-
-    public interface OnItemClickListener {
-
-        void onItemClicked(RecyclerView recyclerView, int position, View v);
-    }
-
-    public interface OnItemLongClickListener {
-
-        boolean onItemLongClicked(RecyclerView recyclerView, int position, View v);
-    }
-}

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/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 kotlinx.serialization.*
+import kotlinx.serialization.builtins.ListSerializer
+import kotlinx.serialization.json.Json
+import java.io.File
+import java.util.*
+
+class SavedSet <T: Any> (private val file: File, private val any: T, private val set: MutableSet<T> = Collections.synchronizedSet(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()
+    }
+
+    fun load() {
+        synchronized(this) {
+            set.clear()
+            kotlin.runCatching {
+                Json.decodeFromString(serializer, file.readText())
+            }.onSuccess {
+                set.addAll(it)
+            }
+        }
+    }
+
+    @OptIn(ExperimentalSerializationApi::class)
+    fun save() {
+        synchronized(this) {
+            file.writeText(Json.encodeToString(serializer, set.toList()))
+        }
+    }
+
+    override fun add(element: T): Boolean {
+        load()
+
+        set.remove(element)
+
+        return set.add(element).also {
+            save()
+        }
+    }
+
+    override fun addAll(elements: Collection<T>): Boolean {
+        load()
+
+        set.removeAll(elements)
+
+        return set.addAll(elements).also {
+            save()
+        }
+    }
+
+    override fun remove(element: T): Boolean {
+        load()
+
+        return set.remove(element).also {
+            save()
+        }
+    }
+
+    override fun clear() {
+        set.clear()
+        save()
+    }
+
+}

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

@@ -1,37 +0,0 @@
-package xyz.quaver.pupil.util
-
-import android.graphics.Paint
-import android.text.style.LineHeightSpan
-
-class SetLineOverlap(private val overlap: Boolean) : LineHeightSpan {
-    companion object {
-        private var originalBottom = 15
-        private var originalDescent = 13
-        private var overlapSaved = false
-    }
-
-    override fun chooseHeight(
-        text: CharSequence?,
-        start: Int,
-        end: Int,
-        spanstartv: Int,
-        lineHeight: Int,
-        fm: Paint.FontMetricsInt?
-    ) {
-        fm ?: return
-
-        if (overlap) {
-            if (overlapSaved) {
-                originalBottom = fm.bottom
-                originalDescent = fm.descent
-                overlapSaved = true
-            }
-            fm.bottom += fm.top
-            fm.descent += fm.top
-        } else {
-            fm.bottom = originalBottom
-            fm.descent = originalDescent
-            overlapSaved = false
-        }
-    }
-}

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/download/Cache.kt

@@ -1,311 +0,0 @@
-/*
- *     Pupil, Hitomi.la viewer for Android
- *     Copyright (C) 2020  tom5079
- *
- *     This program is free software: you can redistribute it and/or modify
- *     it under the terms of the GNU General Public License as published by
- *     the Free Software Foundation, either version 3 of the License, or
- *     (at your option) any later version.
- *
- *     This program is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public License
- *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-package xyz.quaver.pupil.util.download
-
-import android.content.Context
-import android.content.ContextWrapper
-import android.util.Base64
-import android.util.SparseArray
-import androidx.preference.PreferenceManager
-import com.google.firebase.crashlytics.FirebaseCrashlytics
-import kotlinx.coroutines.*
-import xyz.quaver.Code
-import xyz.quaver.hitomi.GalleryBlock
-import xyz.quaver.hitomi.Reader
-import xyz.quaver.proxy
-import xyz.quaver.pupil.util.getCachedGallery
-import xyz.quaver.pupil.util.getDownloadDirectory
-import xyz.quaver.pupil.util.isParentOf
-import xyz.quaver.pupil.util.json
-import java.io.BufferedInputStream
-import java.io.File
-import java.io.FileOutputStream
-import java.io.InputStream
-import java.net.URL
-import java.util.*
-import java.util.concurrent.locks.Lock
-import java.util.concurrent.locks.ReentrantLock
-
-class Cache(context: Context) : ContextWrapper(context) {
-
-    companion object {
-        private val moving = mutableListOf<Int>()
-        private val readers = SparseArray<Reader?>()
-    }
-
-    private val locks = SparseArray<Lock>()
-    private fun lock(galleryID: Int) {
-        synchronized(locks) {
-            if (locks.indexOfKey(galleryID) < 0)
-                locks.put(galleryID, ReentrantLock())
-        }
-
-        locks[galleryID].lock()
-    }
-
-    private fun unlock(galleryID: Int) {
-        locks[galleryID]?.unlock()
-    }
-
-    private val preference = PreferenceManager.getDefaultSharedPreferences(this)
-
-    // Search in this order
-    // Download -> Cache
-    fun getCachedGallery(galleryID: Int) = getCachedGallery(this, galleryID).also {
-        if (!it.exists())
-            it.mkdirs()
-    }
-
-    fun getCachedMetadata(galleryID: Int) : Metadata? {
-        val file = File(getCachedGallery(galleryID), ".metadata")
-
-        if (!file.exists())
-            return null
-
-        return try {
-            json.parse(Metadata.serializer(), file.readText())
-        } catch (e: Exception) {
-            //File corrupted
-            file.delete()
-            null
-        }
-    }
-
-    fun setCachedMetadata(galleryID: Int, metadata: Metadata) {
-        if (preference.getBoolean("cache_disable", false))
-            return
-
-        val file = File(getCachedGallery(galleryID), ".metadata").also {
-            if (!it.exists())
-                it.createNewFile()
-        }
-
-        file.writeText(json.stringify(Metadata.serializer(), metadata))
-    }
-
-    suspend fun getThumbnail(galleryID: Int): String? {
-        val metadata = Cache(this).getCachedMetadata(galleryID)
-
-        @Suppress("BlockingMethodInNonBlockingContext")
-        val thumbnail = if (metadata?.thumbnail == null)
-            withContext(Dispatchers.IO) {
-                val thumbnails = getGalleryBlock(galleryID)?.thumbnails
-                try {
-                    Base64.encodeToString(URL(thumbnails?.firstOrNull()).openConnection(proxy).getInputStream().use {
-                        it.readBytes()
-                    }, Base64.DEFAULT)
-                } catch (e: Exception) {
-                    null
-                }
-            }
-        else
-            metadata.thumbnail
-
-        setCachedMetadata(
-            galleryID,
-            Metadata(Cache(this).getCachedMetadata(galleryID), thumbnail = thumbnail)
-        )
-
-        return thumbnail
-    }
-
-    suspend fun getGalleryBlock(galleryID: Int): GalleryBlock? {
-        val metadata = Cache(this).getCachedMetadata(galleryID)
-
-        val sources = listOf(
-            { xyz.quaver.hitomi.getGalleryBlock(galleryID) },
-            { xyz.quaver.hiyobi.getGalleryBlock(galleryID) }
-        )
-
-        val galleryBlock = if (metadata?.galleryBlock == null) {
-            CoroutineScope(Dispatchers.IO).async {
-                var galleryBlock: GalleryBlock? = null
-
-                for (source in sources) {
-                    galleryBlock = try {
-                        source.invoke()
-                    } catch (e: Exception) {
-                        null
-                    }
-
-                    if (galleryBlock != null)
-                        break
-                }
-
-                galleryBlock
-            }.await() ?: return null
-        }
-        else
-            metadata.galleryBlock
-
-        setCachedMetadata(
-            galleryID,
-            Metadata(Cache(this).getCachedMetadata(galleryID), galleryBlock = galleryBlock)
-        )
-
-        return galleryBlock
-    }
-
-    fun getReaderOrNull(galleryID: Int): Reader? {
-        return readers[galleryID] ?: getCachedMetadata(galleryID)?.reader
-    }
-
-    suspend fun getReader(galleryID: Int): Reader? {
-        val metadata = getCachedMetadata(galleryID)
-        val mirrors = preference.getString("mirrors", null)?.split('>') ?: listOf()
-
-        val sources = mapOf(
-            Code.HITOMI to { xyz.quaver.hitomi.getReader(galleryID) },
-            Code.HIYOBI to { xyz.quaver.hiyobi.getReader(galleryID) }
-        ).let {
-            if (mirrors.isNotEmpty())
-                it.toSortedMap(
-                    Comparator { o1, o2 ->
-                        mirrors.indexOf(o1.name) - mirrors.indexOf(o2.name)
-                    }
-                )
-            else
-                it
-        }
-
-        val reader =
-            if (readers[galleryID] != null)
-                return readers[galleryID]
-            else if (metadata?.reader == null) {
-                var retval: Reader? = null
-
-                for (source in sources) {
-                    retval = try {
-                        withContext(Dispatchers.IO) {
-                            withTimeoutOrNull(1000) {
-                                    source.value.invoke()
-                            }
-                        }
-                    } catch (e: Exception) {
-                        FirebaseCrashlytics.getInstance().recordException(e)
-                        null
-                    }
-
-                    if (retval != null)
-                        break
-                }
-
-                retval
-            } else
-                metadata.reader
-
-        readers.put(galleryID, reader)
-
-        setCachedMetadata(
-            galleryID,
-            Metadata(Cache(this).getCachedMetadata(galleryID), readers = reader)
-        )
-
-        return reader
-    }
-
-    val imageNameRegex = Regex("""^\d+\..+$""")
-    fun getImages(galleryID: Int): List<File?>? {
-        val gallery = getCachedGallery(galleryID)
-
-        return gallery.list { _, name ->
-            imageNameRegex.matches(name)
-        }?.map {
-            File(gallery, it)
-        }
-    }
-
-    val imageExtensions = listOf(
-        "png",
-        "jpg",
-        "webp",
-        "gif"
-    )
-    fun getImage(galleryID: Int, index: Int): File? {
-        val gallery = getCachedGallery(galleryID)
-
-        for (ext in imageExtensions) {
-            File(gallery, "%05d.$ext".format(index)).let {
-                if (it.exists())
-                    return it
-            }
-        }
-
-        return null
-    }
-
-
-    fun putImage(galleryID: Int, index: Int, ext: String, data: InputStream) {
-        if (preference.getBoolean("cache_disable", false))
-            return
-
-        val cache = File(getCachedGallery(galleryID), "%05d.$ext".format(index)).also {
-            if (!it.exists())
-                it.createNewFile()
-        }
-
-        try {
-            BufferedInputStream(data).use { inputStream ->
-                FileOutputStream(cache).use { outputStream ->
-                    inputStream.copyTo(outputStream)
-                }
-            }
-        } catch (e: Exception) {
-            cache.delete()
-        }
-    }
-
-    fun moveToDownload(galleryID: Int) {
-        if (preference.getBoolean("cache_disable", false))
-            return
-
-        if (moving.contains(galleryID))
-            return
-
-        CoroutineScope(Dispatchers.IO).launch {
-            val cache = getCachedGallery(galleryID).also {
-                if (!it.exists())
-                    return@launch
-            }
-            val download = File(getDownloadDirectory(this@Cache), galleryID.toString())
-
-            if (download.isParentOf(cache))
-                return@launch
-
-            FirebaseCrashlytics.getInstance().log("MOVING ${cache.canonicalPath} --> ${download.canonicalPath}")
-
-            cache.copyRecursively(download, true) { file, err ->
-                FirebaseCrashlytics.getInstance().log("MOVING ERROR ${file.canonicalPath} ${err.message}")
-                OnErrorAction.SKIP
-            }
-            FirebaseCrashlytics.getInstance().log("MOVED ${cache.canonicalPath}")
-
-            FirebaseCrashlytics.getInstance().log("DELETING ${cache.canonicalPath}")
-            cache.deleteRecursively()
-            FirebaseCrashlytics.getInstance().log("DELETED ${cache.canonicalPath}")
-        }
-    }
-
-    fun isDownloading(galleryID: Int) = getCachedMetadata(galleryID)?.isDownloading == true
-
-    fun setDownloading(galleryID: Int, isDownloading: Boolean) {
-        setCachedMetadata(galleryID, Metadata(getCachedMetadata(galleryID), isDownloading = isDownloading))
-    }
-
-}

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

@@ -1,393 +0,0 @@
-/*
- *     Pupil, Hitomi.la viewer for Android
- *     Copyright (C) 2020  tom5079
- *
- *     This program is free software: you can redistribute it and/or modify
- *     it under the terms of the GNU General Public License as published by
- *     the Free Software Foundation, either version 3 of the License, or
- *     (at your option) any later version.
- *
- *     This program is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public License
- *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-package xyz.quaver.pupil.util.download
-
-import android.app.PendingIntent
-import android.content.Context
-import android.content.ContextWrapper
-import android.content.Intent
-import android.content.SharedPreferences
-import android.util.Log
-import android.util.SparseArray
-import androidx.core.app.NotificationCompat
-import androidx.core.app.NotificationManagerCompat
-import androidx.core.app.TaskStackBuilder
-import androidx.preference.PreferenceManager
-import com.google.firebase.crashlytics.FirebaseCrashlytics
-import kotlinx.coroutines.*
-import okhttp3.*
-import okio.*
-import xyz.quaver.Code
-import xyz.quaver.hitomi.Reader
-import xyz.quaver.hitomi.getReferer
-import xyz.quaver.hitomi.imageUrlFromImage
-import xyz.quaver.hiyobi.cookie
-import xyz.quaver.hiyobi.createImgList
-import xyz.quaver.hiyobi.user_agent
-import xyz.quaver.proxy
-import xyz.quaver.pupil.R
-import xyz.quaver.pupil.ui.ReaderActivity
-import java.io.File
-import java.io.IOException
-import java.util.concurrent.LinkedBlockingQueue
-import java.util.concurrent.TimeUnit
-
-@OptIn(ExperimentalCoroutinesApi::class)
-class DownloadWorker private constructor(context: Context) : ContextWrapper(context) {
-
-    private val preferences : SharedPreferences = PreferenceManager.getDefaultSharedPreferences(this)
-
-    //region ProgressListener
-    @Suppress("UNCHECKED_CAST")
-    private val progressListener = object: ProgressListener {
-        override fun update(tag: Any?, bytesRead: Long, contentLength: Long, done: Boolean) {
-            val (galleryID, index) = (tag as? Pair<Int, Int>) ?: return
-
-            if (!done && progress[galleryID]?.get(index)?.isFinite() == true)
-                progress[galleryID]?.set(index, bytesRead * 100F / contentLength)
-        }
-    }
-
-    interface ProgressListener {
-        fun update(tag: Any?, bytesRead : Long, contentLength: Long, done: Boolean)
-    }
-
-    class ProgressResponseBody(
-        val tag: Any?,
-        val responseBody: ResponseBody,
-        val progressListener : ProgressListener
-    ) : ResponseBody() {
-        private var bufferedSource : BufferedSource? = null
-
-        override fun contentLength() = responseBody.contentLength()
-        override fun contentType() = responseBody.contentType()
-
-        override fun source(): BufferedSource {
-            if (bufferedSource == null)
-                bufferedSource = Okio.buffer(source(responseBody.source()))
-
-            return bufferedSource!!
-        }
-
-        private fun source(source: Source) = object: ForwardingSource(source) {
-
-            var totalBytesRead = 0L
-
-            override fun read(sink: Buffer, byteCount: Long): Long {
-                val bytesRead = super.read(sink, byteCount)
-
-                totalBytesRead += if (bytesRead == -1L) 0L else bytesRead
-                progressListener.update(tag, totalBytesRead, responseBody.contentLength(), bytesRead == -1L)
-
-                return bytesRead
-            }
-
-        }
-    }
-    //endregion
-
-    //region Singleton
-    companion object {
-
-        @Volatile private var instance: DownloadWorker? = null
-
-        fun getInstance(context: Context) =
-            instance ?: synchronized(this) {
-                instance ?: DownloadWorker(context).also { instance = it }
-            }
-    }
-    //endregion
-
-    val notificationManager = NotificationManagerCompat.from(context)
-
-    val queue = LinkedBlockingQueue<Int>()
-
-    /*
-    * KEY
-    *  primary galleryID
-    *  secondary index
-    * PRIMARY VALUE
-    *  MutableList -> Download in progress
-    *  null -> Loading / Gallery doesn't exist
-    * SECONDARY VALUE
-    *  0 <= value < 100 -> Download in progress
-    *  Float.POSITIVE_INFINITY -> Download completed
-    */
-    val progress = SparseArray<MutableList<Float>?>()
-    val notification = SparseArray<NotificationCompat.Builder?>()
-
-    private val loop = loop()
-    private val worker = SparseArray<Job?>()
-
-    val interceptor = Interceptor { chain ->
-        val request = chain.request()
-        var response = chain.proceed(request)
-
-        var retry = 5
-        while (!response.isSuccessful && retry > 0) {
-            response = chain.proceed(request)
-            retry--
-        }
-
-        response.newBuilder()
-            .body(response.body()?.let {
-                ProgressResponseBody(request.tag(), it, progressListener)
-            }).build()
-    }
-
-    val client =
-        OkHttpClient.Builder()
-            .connectTimeout(0, TimeUnit.SECONDS)
-            .addInterceptor(interceptor)
-            .readTimeout(0, TimeUnit.SECONDS)
-            .dispatcher(Dispatcher().apply {
-                maxRequests = 4
-                maxRequestsPerHost = 4
-            })
-            .proxy(proxy)
-            .build()
-
-    fun stop() {
-        queue.clear()
-
-        loop.cancel()
-        for (i in 0 until worker.size()) {
-            val galleryID = worker.keyAt(i)
-
-            Cache(this@DownloadWorker).setDownloading(galleryID, false)
-            worker[galleryID]?.cancel()
-        }
-
-        client.dispatcher().queuedCalls().filter {
-            it.request().tag() is Pair<*, *>
-        }.forEach {
-            it.cancel()
-        }
-
-        progress.clear()
-        notification.clear()
-        notificationManager.cancelAll()
-    }
-
-    fun cancel(galleryID: Int) {
-        queue.remove(galleryID)
-        worker[galleryID]?.cancel()
-
-        client.dispatcher().queuedCalls().filter {
-            ((it.request().tag() as Pair<*, *>).first as Int) == galleryID
-        }.forEach {
-            it.cancel()
-        }
-
-        progress.remove(galleryID)
-        notification.remove(galleryID)
-        notificationManager.cancel(galleryID)
-    }
-
-    fun isCompleted(galleryID: Int) = progress[galleryID]?.all { it.isInfinite() } == true
-
-    private fun queueDownload(galleryID: Int, reader: Reader, index: Int, callback: Callback) {
-        val lowQuality = preferences.getBoolean("low_quality", false)
-
-        val request = Request.Builder().apply {
-            when (reader.code) {
-                Code.HITOMI -> {
-                    url(
-                        imageUrlFromImage(
-                            galleryID,
-                            reader.galleryInfo.files[index],
-                            !lowQuality
-                        )
-                    )
-                    addHeader("Referer", getReferer(galleryID))
-                }
-                Code.HIYOBI -> {
-                    url(createImgList(galleryID, reader, lowQuality)[index].path)
-                    addHeader("User-Agent", user_agent)
-                    addHeader("Cookie", cookie)
-                }
-                else -> {
-                    //shouldn't be called anyway
-                }
-            }
-            tag(galleryID to index)
-        }.build()
-
-        client.newCall(request).enqueue(callback)
-    }
-
-    private fun download(galleryID: Int) = CoroutineScope(Dispatchers.IO).launch {
-        val reader = Cache(this@DownloadWorker).getReader(galleryID)
-
-        //gallery doesn't exist
-        if (reader == null) {
-            progress.put(galleryID, null)
-
-            Cache(this@DownloadWorker).setDownloading(galleryID, false)
-            return@launch
-        }
-
-        val cache = Cache(this@DownloadWorker).getImages(galleryID)
-
-        progress.put(galleryID, reader.galleryInfo.files.indices.map { index ->
-            if (cache?.firstOrNull { it?.nameWithoutExtension?.toIntOrNull()  == index } != null)
-                Float.POSITIVE_INFINITY
-            else
-                0F
-        }.toMutableList())
-
-        if (notification[galleryID] == null)
-            initNotification(galleryID)
-
-        notification[galleryID]?.setContentTitle(reader.galleryInfo.title)
-        notify(galleryID)
-
-        if (isCompleted(galleryID)) {
-            with(Cache(this@DownloadWorker)) {
-                if (isDownloading(galleryID)) {
-                    moveToDownload(galleryID)
-                    setDownloading(galleryID, false)
-                }
-            }
-
-            return@launch
-        }
-
-        for (i in reader.galleryInfo.files.indices) {
-            val callback = object : Callback {
-                override fun onFailure(call: Call, e: IOException) {
-                    if (e.message?.contains("cancel", true) != false)
-                        return
-
-                    Log.i("PUPILD", "FAIL ${call.request().tag()} (${e.message})")
-                    FirebaseCrashlytics.getInstance().apply {
-                        log("FAIL ${call.request().tag()} (${e.message})")
-                        setCustomKey("POS", "FAIL")
-                        recordException(e)
-                    }
-
-                    cancel(galleryID)
-                    queue.add(galleryID)
-                }
-
-                override fun onResponse(call: Call, response: Response) {
-                    val ext = call.request().url().encodedPath().split('.').last()
-
-                    try {
-                        response.body().use {
-                            Cache(this@DownloadWorker).putImage(galleryID, i, ext, it!!.byteStream())
-                        }
-                        progress[galleryID]?.set(i, Float.POSITIVE_INFINITY)
-
-                        notify(galleryID)
-
-                        CoroutineScope(Dispatchers.IO).launch {
-                            if (isCompleted(galleryID)) {
-                                with(Cache(this@DownloadWorker)) {
-                                    if (isDownloading(galleryID)) {
-                                        moveToDownload(galleryID)
-                                        setDownloading(galleryID, false)
-                                    }
-                                }
-                            }
-                        }
-                    } catch (e: Exception) {
-                        FirebaseCrashlytics.getInstance().apply {
-                            log("FAIL ON OK ${call.request().tag()} (${e.message})")
-                            setCustomKey("POS", "FAIL ON OK")
-                            recordException(e)
-                        }
-
-                        File(Cache(this@DownloadWorker).getCachedGallery(galleryID), "%05d.$ext".format(i)).delete()
-
-                        cancel(galleryID)
-                        queue.add(galleryID)
-                    }
-                }
-            }
-
-            if (progress[galleryID]?.get(i)?.isFinite() == true)
-                queueDownload(galleryID, reader, i, callback)
-        }
-    }
-
-    private fun notify(galleryID: Int) {
-        val max = progress[galleryID]?.size ?: 0
-        val progress = progress[galleryID]?.count { it.isInfinite() } ?: 0
-
-        if (isCompleted(galleryID)) {
-            notification[galleryID]
-                ?.setContentText(getString(R.string.reader_notification_complete))
-                ?.setSmallIcon(android.R.drawable.stat_sys_download_done)
-                ?.setProgress(0, 0, false)
-                ?.setOngoing(false)
-
-            notificationManager.cancel(galleryID)
-        } else
-            notification[galleryID]
-                ?.setProgress(max, progress, false)
-                ?.setContentText("$progress/$max")
-
-        if (Cache(this).isDownloading(galleryID) && notification[galleryID] != null)
-            notification[galleryID]?.let { notificationManager.notify(galleryID, it.build()) }
-        else
-            notificationManager.cancel(galleryID)
-    }
-
-    private fun initNotification(galleryID: Int) {
-        val intent = Intent(this, ReaderActivity::class.java).apply {
-            putExtra("galleryID", galleryID)
-        }
-        val pendingIntent = TaskStackBuilder.create(this).run {
-            addNextIntentWithParentStack(intent)
-            getPendingIntent(galleryID, PendingIntent.FLAG_UPDATE_CURRENT)
-        }
-
-        notification.put(galleryID, NotificationCompat.Builder(this, "download").apply {
-            setContentTitle(getString(R.string.reader_loading))
-            setContentText(getString(R.string.reader_notification_text))
-            setSmallIcon(android.R.drawable.stat_sys_download)                                  // had to use this because old android doesn't support VectorDrawable on Notification :P
-            setContentIntent(pendingIntent)
-            setProgress(0, 0, true)
-            setOngoing(true)
-        })
-    }
-
-    private fun loop() = CoroutineScope(Dispatchers.Default).launch {
-        while (true) {
-            if (queue.isEmpty())
-                continue
-
-            val galleryID = queue.peek() ?: continue
-
-            if (progress.indexOfKey(galleryID) >= 0)    // Gallery already downloading!
-                cancel(galleryID)
-
-            if (notification[galleryID] == null)
-                initNotification(galleryID)
-
-            if (Cache(this@DownloadWorker).isDownloading(galleryID))
-                notification[galleryID]?.let { notificationManager.notify(galleryID, it.build()) }
-
-            worker.put(galleryID, download(galleryID))
-            queue.poll()
-        }
-    }
-
-}

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

@@ -1,44 +0,0 @@
-/*
- *     Pupil, Hitomi.la viewer for Android
- *     Copyright (C) 2020  tom5079
- *
- *     This program is free software: you can redistribute it and/or modify
- *     it under the terms of the GNU General Public License as published by
- *     the Free Software Foundation, either version 3 of the License, or
- *     (at your option) any later version.
- *
- *     This program is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public License
- *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-package xyz.quaver.pupil.util.download
-
-import kotlinx.serialization.Serializable
-import xyz.quaver.hitomi.GalleryBlock
-import xyz.quaver.hitomi.Reader
-
-@Serializable
-data class Metadata(
-    val thumbnail: String? = null,
-    val galleryBlock: GalleryBlock? = null,
-    val reader: Reader? = null,
-    val isDownloading: Boolean? = null
-) {
-    constructor(
-        metadata: Metadata?,
-        thumbnail: String? = null,
-        galleryBlock: GalleryBlock? = null,
-        readers: Reader? = null,
-        isDownloading: Boolean? = null
-    ) : this(
-        thumbnail ?: metadata?.thumbnail,
-        galleryBlock ?: metadata?.galleryBlock,
-        readers ?: metadata?.reader,
-        isDownloading ?: metadata?.isDownloading
-    )
-}

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

@@ -0,0 +1,269 @@
+/*
+ *     Pupil, Hitomi.la viewer for Android
+ *     Copyright (C) 2020  tom5079
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package xyz.quaver.pupil.util.downloader
+
+import android.content.Context
+import android.content.ContextWrapper
+import android.net.Uri
+import kotlinx.coroutines.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.Code
+import xyz.quaver.hitomi.GalleryBlock
+import xyz.quaver.hitomi.Reader
+import xyz.quaver.io.FileX
+import xyz.quaver.io.util.*
+import xyz.quaver.pupil.client
+import xyz.quaver.pupil.util.Preferences
+import java.io.File
+import java.io.IOException
+import java.util.concurrent.ConcurrentHashMap
+
+@Serializable
+data class Metadata(
+    var galleryBlock: GalleryBlock? = null,
+    var reader: Reader? = null,
+    var imageList: MutableList<String?>? = null
+) {
+    fun copy(): Metadata = Metadata(galleryBlock, reader, 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/$galleryID").deleteRecursively()
+            instances.remove(galleryID)
+        }
+    }
+
+    init {
+        cacheFolder.mkdirs()
+    }
+
+    var metadata = kotlin.runCatching {
+        findFile(".metadata")?.readText()?.let {
+            Json.decodeFromString<Metadata>(it)
+        }
+    }.getOrNull() ?: Metadata()
+
+    val downloadFolder: FileX?
+        get() = DownloadManager.getInstance(this).getDownloadFolder(galleryID)
+
+    val cacheFolder: FileX
+        get() = FileX(this, cacheDir, "imageCache/$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? {
+        val sources = listOf(
+            { xyz.quaver.hitomi.getGalleryBlock(galleryID) },
+            { xyz.quaver.hiyobi.getGalleryBlock(galleryID) }
+        )
+
+        return metadata.galleryBlock
+            ?: withContext(Dispatchers.IO) {
+                var galleryBlock: GalleryBlock? = null
+
+                for (source in sources) {
+                    galleryBlock = try {
+                        source.invoke()
+                    } catch (e: Exception) { null }
+
+                    if (galleryBlock != null)
+                        break
+                }
+
+                galleryBlock?.also {
+                    setMetadata { metadata -> metadata.galleryBlock = it }
+                }
+            }
+    }
+
+    @Suppress("BlockingMethodInNonBlockingContext")
+    suspend fun getThumbnail(): Uri =
+        findFile(".thumbnail")?.uri
+            ?: getGalleryBlock()?.thumbnails?.firstOrNull()?.let { withContext(Dispatchers.IO) {
+                kotlin.runCatching {
+                    val request = Request.Builder()
+                        .url(it)
+                        .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 getReader(): Reader? {
+        val mirrors = Preferences.get<String>("mirrors").let { if (it.isEmpty()) emptyList() else it.split('>') }
+
+        val sources = mapOf(
+            Code.HITOMI to { xyz.quaver.hitomi.getReader(galleryID) },
+            Code.HIYOBI to { xyz.quaver.hiyobi.getReader(galleryID) }
+        ).let {
+            if (mirrors.isNotEmpty())
+                it.toSortedMap{ o1, o2 -> mirrors.indexOf(o1.name) - mirrors.indexOf(o2.name) }
+            else
+                it
+        }
+
+        return metadata.reader
+            ?: withContext(Dispatchers.IO) {
+                var reader: Reader? = null
+
+                for (source in sources) {
+                    reader = try {
+                        source.value.invoke()
+                    } catch (e: Exception) {
+                        null
+                    }
+
+                   if (reader != null)
+                       break
+                }
+
+                reader?.also {
+                    setMetadata { metadata ->
+                        metadata.reader = it
+
+                        if (metadata.imageList == null)
+                            metadata.imageList = MutableList(reader.galleryInfo.files.size) { null }
+                    }
+                }
+            }
+    }
+
+    fun getImage(index: Int): FileX? =
+        metadata.imageList?.getOrNull(index)?.let { findFile(it) }
+
+    @Suppress("BlockingMethodInNonBlockingContext")
+    fun putImage(index: Int, fileName: String, data: ByteArray) {
+        val file = cacheFolder.getChild(fileName)
+
+        if (!file.exists())
+            file.createNewFile()
+        file.writeBytes(data)
+        setMetadata { metadata -> metadata.imageList!![index] = fileName }
+    }
+
+    private val lock = ConcurrentHashMap<Int, Mutex>()
+    @Suppress("BlockingMethodInNonBlockingContext")
+    fun moveToDownload() = CoroutineScope(Dispatchers.IO).launch {
+        val downloadFolder = downloadFolder ?: return@launch
+
+        if (lock[galleryID]?.isLocked == true)
+            return@launch
+
+        (lock[galleryID] ?: Mutex().also { lock[galleryID] = it }).withLock {
+            val cacheMetadata = cacheFolder.getChild(".metadata")
+            val downloadMetadata = downloadFolder.getChild(".metadata")
+
+            if (!cacheMetadata.exists())
+                return@launch
+
+            if (cacheMetadata.exists()) {
+                kotlin.runCatching {
+                    if (!downloadMetadata.exists())
+                        downloadMetadata.createNewFile()
+
+                    downloadMetadata.writeText(Json.encodeToString(metadata))
+                }
+            }
+
+            val cacheThumbnail = cacheFolder.getChild(".thumbnail")
+            val downloadThumbnail = downloadFolder.getChild(".thumbnail")
+
+            if (cacheThumbnail.exists()) {
+                kotlin.runCatching {
+                    if (!downloadThumbnail.exists())
+                        downloadThumbnail.createNewFile()
+
+                    downloadThumbnail.outputStream()?.use { target -> target.channel.truncate(0L); cacheThumbnail.inputStream()?.use { source ->
+                        source.copyTo(target)
+                    } }
+                    cacheThumbnail.delete()
+                }
+            }
+
+            metadata.imageList?.forEach { imageName ->
+                imageName ?: return@forEach
+                val target = downloadFolder.getChild(imageName)
+                val source = cacheFolder.getChild(imageName)
+
+                if (!source.exists())
+                    return@forEach
+
+                kotlin.runCatching {
+                    if (!target.exists())
+                        target.createNewFile()
+
+                    target.outputStream()?.use { target -> target.channel.truncate(0L); source.inputStream()?.use { source ->
+                        source.copyTo(target)
+                    } }
+                }
+            }
+
+            cacheFolder.deleteRecursively()
+        }
+    }
+}

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

@@ -0,0 +1,130 @@
+/*
+ *     Pupil, Hitomi.la viewer for Android
+ *     Copyright (C) 2020  tom5079
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package xyz.quaver.pupil.util.downloader
+
+import android.content.Context
+import android.content.ContextWrapper
+import android.util.Log
+import kotlinx.coroutines.runBlocking
+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!!
+        }
+
+
+    @Synchronized
+    fun isDownloading(galleryID: Int): Boolean {
+        val isThisGallery: (Call) -> Boolean = { (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) }
+
+    @Synchronized
+    fun addDownloadFolder(galleryID: Int) {
+        val name = runBlocking {
+            Cache.getInstance(this@DownloadManager, galleryID).getGalleryBlock()
+        }?.formatDownloadFolder() ?: return
+
+        val folder = downloadFolder.getChild(name)
+
+        if (folder.exists())
+            return
+
+        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

@@ -18,200 +18,48 @@
 
 package xyz.quaver.pupil.util
 
-import android.annotation.TargetApi
 import android.content.Context
-import android.net.Uri
-import android.os.Build
-import android.os.storage.StorageManager
-import android.provider.DocumentsContract
-import androidx.core.content.ContextCompat
-import androidx.preference.PreferenceManager
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import xyz.quaver.pupil.histories
+import xyz.quaver.pupil.util.downloader.Cache
+import xyz.quaver.pupil.util.downloader.DownloadManager
 import java.io.File
-import java.io.FileOutputStream
-import java.lang.reflect.Array
-import java.net.URL
 
+val mutex = Mutex()
+fun cleanCache(context: Context) = CoroutineScope(Dispatchers.IO).launch {
+    if (mutex.isLocked) return@launch
 
-fun getCachedGallery(context: Context, galleryID: Int) =
-    File(getDownloadDirectory(context), galleryID.toString()).let {
-        if (it.exists())
-            it
-        else
-            File(context.cacheDir, "imageCache/$galleryID")
-    }
+    mutex.withLock {
+        val cacheFolder = File(context.cacheDir, "imageCache")
+        val downloadManager = DownloadManager.getInstance(context)
 
-fun getDownloadDirectory(context: Context) =
-    PreferenceManager.getDefaultSharedPreferences(context).getString("dl_location", null).let {
-        if (it != null && !it.startsWith("content"))
-            File(it)
-        else
-            context.getExternalFilesDir(null)!!
-    }
+        val limit = (Preferences.get<String>("cache_limit").toLongOrNull() ?: 0L)*1024*1024*1024
 
-fun URL.download(to: File, onDownloadProgress: ((Long, Long) -> Unit)? = null) {
+        if (limit == 0L) return@withLock
 
-    if (to.parentFile?.exists() == false)
-        to.parentFile!!.mkdirs()
+        val cacheSize = {
+            var size = 0L
 
-    if (!to.exists())
-        to.createNewFile()
+            cacheFolder.walk().forEach {
+                size += it.length()
+            }
 
-    FileOutputStream(to).use { out ->
+            size
+        }
 
-        with(openConnection()) {
-            val fileSize = contentLength.toLong()
+        if (cacheSize.invoke() > limit)
+            while (cacheSize.invoke() > limit/2) {
+                val caches = cacheFolder.list() ?: return@withLock
 
-            getInputStream().use {
-
-                var bytesCopied: Long = 0
-                val buffer = ByteArray(DEFAULT_BUFFER_SIZE)
-
-                var bytes = it.read(buffer)
-                while (bytes >= 0) {
-                    out.write(buffer, 0, bytes)
-                    bytesCopied += bytes
-                    onDownloadProgress?.invoke(bytesCopied, fileSize)
-                    bytes = it.read(buffer)
+                (histories.toList().firstOrNull {
+                    caches.contains(it.toString()) && !downloadManager.isDownloading(it)
+                } ?: return@withLock).let {
+                    Cache.delete(context, it)
                 }
-
             }
-        }
-
     }
-}
-
-fun getExtSdCardPaths(context: Context) =
-    ContextCompat.getExternalFilesDirs(context, null).drop(1).map {
-        it.absolutePath.substringBeforeLast("/Android/data").let {  path ->
-            runCatching {
-                File(path).canonicalPath
-            }.getOrElse {
-                path
-            }
-        }
-    }
-
-const val PRIMARY_VOLUME_NAME = "primary"
-fun getVolumePath(context: Context, volumeID: String?): String? {
-    return runCatching {
-        val storageManager = context.getSystemService(Context.STORAGE_SERVICE) as StorageManager
-        val storageVolumeClass = Class.forName("android.os.storage.StorageVolume")
-
-        val getVolumeList = storageVolumeClass.javaClass.getMethod("getVolumeList")
-        val getUUID = storageVolumeClass.getMethod("getUuid")
-        val getPath = storageVolumeClass.getMethod("getPath")
-        val isPrimary = storageVolumeClass.getMethod("isPrimary")
-
-        val result = getVolumeList.invoke(storageManager)!!
-
-        val length = Array.getLength(result)
-
-        for (i in 0 until length) {
-            val storageVolumeElement = Array.get(result, i)
-            val uuid = getUUID.invoke(storageVolumeElement) as? String
-            val primary = isPrimary.invoke(storageVolumeElement) as? Boolean
-
-            // primary volume?
-            if (primary == true && volumeID == PRIMARY_VOLUME_NAME)
-                return@runCatching getPath.invoke(storageVolumeElement) as? String
-
-            // other volumes?
-            if (volumeID == uuid) {
-                return@runCatching getPath.invoke(storageVolumeElement) as? String
-            }
-        }
-        return@runCatching null
-    }.getOrNull()
-}
-
-// Credits go to https://stackoverflow.com/questions/34927748/android-5-0-documentfile-from-tree-uri/36162691#36162691
-@TargetApi(Build.VERSION_CODES.LOLLIPOP)
-fun getVolumeIdFromTreeUri(uri: Uri) =
-    DocumentsContract.getTreeDocumentId(uri).split(':').let {
-        if (it.isNotEmpty())
-            it[0]
-        else
-            null
-    }
-
-@TargetApi(Build.VERSION_CODES.LOLLIPOP)
-fun getDocumentPathFromTreeUri(uri: Uri) =
-    DocumentsContract.getTreeDocumentId(uri).split(':').let {
-        if (it.size >= 2)
-            it[1]
-        else
-            File.separator
-    }
-
-fun getFullPathFromTreeUri(context: Context, uri: Uri) : String? {
-    val volumePath = getVolumePath(context, getVolumeIdFromTreeUri(uri) ?: return null).let {
-        it ?: return File.separator
-
-        if (it.endsWith(File.separator))
-            it.dropLast(1)
-        else
-            it
-    }
-
-    val documentPath = getDocumentPathFromTreeUri(uri).let {
-        if (it.endsWith(File.separator))
-            it.dropLast(1)
-        else
-            it
-    }
-
-    return if (documentPath.isNotEmpty()) {
-        if (documentPath.startsWith(File.separator))
-            volumePath + documentPath
-        else
-            volumePath + File.separator + documentPath
-    } else
-        volumePath
-}
-
-// Huge thanks to avluis(https://github.com/avluis)
-// This code is originated from Hentoid(https://github.com/avluis/Hentoid) under Apache-2.0 license.
-fun Uri.toFile(context: Context): File? {
-    val path = this.path ?: return null
-
-    val pathSeparator = path.indexOf(':')
-    val folderName = path.substring(pathSeparator+1)
-
-    // Determine whether the designated file is
-    // - on a removable media (e.g. SD card, OTG)
-    // or
-    // - on the internal phone memory
-    val removableMediaFolderRoots = getExtSdCardPaths(context)
-
-    /* First test is to compare root names with known roots of removable media
-     * In many cases, the SD card root name is shared between pre-SAF (File) and SAF (DocumentFile) frameworks
-     * (e.g. /storage/3437-3934 vs. /tree/3437-3934)
-     * This is what the following block is trying to do
-     */
-    for (s in removableMediaFolderRoots) {
-        val sRoot = s.substring(s.lastIndexOf(File.separatorChar))
-        val root = path.substring(0, pathSeparator).let {
-            it.substring(it.lastIndexOf(File.separatorChar))
-        }
-
-        if (sRoot.equals(root, true)) {
-            return File(s + File.separatorChar + folderName)
-        }
-    }
-    /* In some other cases, there is no common name (e.g. /storage/sdcard1 vs. /tree/3437-3934)
-     * We can use a slower method to translate the Uri obtained with SAF into a pre-SAF path
-     * and compare it to the known removable media volume names
-     */
-    val root = getFullPathFromTreeUri(context, this)
-
-    for (s in removableMediaFolderRoots) {
-        if (root?.startsWith(s) == true) {
-            return File(root)
-        }
-    }
-
-    return File(context.getExternalFilesDir(null)?.canonicalPath?.substringBeforeLast("/Android/data") ?: return null, folderName)
-}
-
-fun File.isParentOf(another: File) =
-    another.absolutePath.startsWith(this.absolutePath)
+}

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

@@ -1,96 +0,0 @@
-/*
- *     Pupil, Hitomi.la viewer for Android
- *     Copyright (C) 2019  tom5079
- *
- *     This program is free software: you can redistribute it and/or modify
- *     it under the terms of the GNU General Public License as published by
- *     the Free Software Foundation, either version 3 of the License, or
- *     (at your option) any later version.
- *
- *     This program is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public License
- *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-package xyz.quaver.pupil.util
-
-import kotlinx.serialization.KSerializer
-import kotlinx.serialization.builtins.list
-import kotlinx.serialization.builtins.serializer
-import java.io.File
-
-class Histories(private val file: File) : ArrayList<Int>() {
-
-    val serializer: KSerializer<List<Int>> = Int.serializer().list
-
-    init {
-        if (!file.exists())
-            file.parentFile?.mkdirs()
-
-        try {
-            load()
-        } catch (e: Exception) {
-            save()
-        }
-    }
-
-    fun load() : Histories {
-        return apply {
-            super.clear()
-            super.addAll(
-                json.parse(
-                    serializer,
-                    file.bufferedReader().use { it.readText() }
-                )
-            )
-        }
-    }
-
-    fun save() {
-        file.writeText(json.stringify(serializer, this))
-    }
-
-    override fun add(element: Int): Boolean {
-        load()
-
-        if (contains(element))
-            super.remove(element)
-
-        super.add(0, element)
-
-        save()
-
-        return true
-    }
-
-    override fun addAll(elements: Collection<Int>): Boolean {
-        load()
-
-        for (e in elements) {
-            if (contains(e))
-                super.remove(e)
-            super.add(0, e)
-        }
-
-        save()
-
-        return true
-    }
-
-    override fun remove(element: Int): Boolean {
-        load()
-        val retval = super.remove(element)
-        save()
-
-        return retval
-    }
-
-    override fun clear() {
-        super.clear()
-        save()
-    }
-}

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

@@ -22,7 +22,9 @@ import android.content.Context
 import android.content.ContextWrapper
 import androidx.core.content.ContextCompat
 import kotlinx.serialization.Serializable
-import kotlinx.serialization.builtins.list
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.Json
 import java.io.File
 import java.security.MessageDigest
 
@@ -41,7 +43,7 @@ fun hashWithSalt(password: String): Pair<String, String> {
     return Pair(hash(password+salt), salt)
 }
 
-val source = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
+const val source = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
 
 @Serializable
 data class Lock(val type: Type, val hash: String, val salt: String) {
@@ -80,7 +82,7 @@ class LockManager(base: Context): ContextWrapper(base) {
             lock.writeText("[]")
         }
 
-        locks = ArrayList(json.parse(Lock.serializer().list, lock.readText()))
+        locks = Json.decodeFromString(lock.readText())
     }
 
     private fun save() {
@@ -89,7 +91,7 @@ class LockManager(base: Context): ContextWrapper(base) {
         if (!lock.exists())
             lock.createNewFile()
 
-        lock.writeText(json.stringify(Lock.serializer().list, locks?.toList() ?: listOf()))
+        lock.writeText(Json.encodeToString(locks?.toList() ?: listOf()))
     }
 
     fun add(lock: Lock) {

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

@@ -19,6 +19,21 @@
 package xyz.quaver.pupil.util
 
 import android.annotation.SuppressLint
+import android.content.Context
+import android.content.Intent
+import android.os.Build
+import androidx.core.content.ContextCompat
+import kotlinx.serialization.json.JsonElement
+import kotlinx.serialization.json.jsonArray
+import kotlinx.serialization.json.jsonObject
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import xyz.quaver.Code
+import xyz.quaver.hitomi.GalleryBlock
+import xyz.quaver.hitomi.Reader
+import xyz.quaver.hitomi.getReferer
+import xyz.quaver.hitomi.imageUrlFromImage
+import xyz.quaver.hiyobi.createImgList
 import java.util.*
 import kotlin.collections.ArrayList
 
@@ -33,15 +48,15 @@ fun String.wordCapitalize() : String {
     return result.joinToString(" ")
 }
 
-fun byteToString(byte: Long, precision : Int = 1) : String {
+private val suffix = listOf(
+    "B",
+    "kB",
+    "MB",
+    "GB",
+    "TB" //really?
+)
 
-    val suffix = listOf(
-        "B",
-        "kB",
-        "MB",
-        "GB",
-        "TB" //really?
-    )
+fun byteToString(byte: Long, precision : Int = 1) : String {
     var size = byte.toDouble(); var suffixIndex = 0
 
     while (size >= 1024) {
@@ -50,5 +65,76 @@ fun byteToString(byte: Long, precision : Int = 1) : String {
     }
 
     return "%.${precision}f ${suffix[suffixIndex]}".format(size)
+}
 
-}
+/**
+ * Convert android generated ID to requestCode
+ * to prevent java.lang.IllegalArgumentException: Can only use lower 16 bits for requestCode
+ *
+ * https://stackoverflow.com/questions/38072322/generate-16-bit-unique-ids-in-android-for-startactivityforresult
+ */
+fun Int.normalizeID() = this.and(0xFFFF)
+
+fun OkHttpClient.Builder.proxyInfo(proxyInfo: ProxyInfo) = this.apply {
+    proxy(proxyInfo.proxy())
+    proxyInfo.authenticator()?.let {
+        proxyAuthenticator(it)
+    }
+}
+
+val formatMap = mapOf<String, GalleryBlock.() -> (String)>(
+    "-id-" to { id.toString() },
+    "-title-" to { title },
+    "-artist-" to { 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)
+
+val Reader.requestBuilders: List<Request.Builder>
+    get() {
+        val galleryID = this.galleryInfo.id ?: 0
+        val lowQuality = Preferences["low_quality", true]
+
+        return when(code) {
+            Code.HITOMI -> {
+                this.galleryInfo.files.map {
+                    Request.Builder()
+                        .url(imageUrlFromImage(galleryID, it, !lowQuality))
+                        .header("Referer", getReferer(galleryID))
+                }
+            }
+            Code.HIYOBI -> {
+                createImgList(galleryID, this, lowQuality).map {
+                    Request.Builder()
+                        .url(it.path)
+                }
+            }
+        }
+    }
+
+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]

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

@@ -19,8 +19,10 @@
 package xyz.quaver.pupil.util
 
 import android.content.Context
-import androidx.preference.PreferenceManager
 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
@@ -35,29 +37,22 @@ data class ProxyInfo(
     val password: String? = null
 ) {
     fun proxy() : Proxy {
-        return if (host == null || port == null)
+        return if (host.isNullOrBlank() || port == null)
             return Proxy.NO_PROXY
         else
             Proxy(type, InetSocketAddress.createUnresolved(host, port))
     }
 
-    fun authenticator() = Authenticator { _, response ->
-        val credential = Credentials.basic(username ?: "", password ?: "")
+    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()
-    }
+                response.request().newBuilder()
+                    .header("Proxy-Authorization", credential)
+                    .build()
+            }
 
 }
 
-fun getProxy(context: Context) =
-    getProxyInfo(context).proxy()
-
-fun getProxyInfo(context: Context) =
-    PreferenceManager.getDefaultSharedPreferences(context).getString("proxy", null).let {
-        if (it == null)
-            ProxyInfo(Proxy.Type.DIRECT)
-        else
-            json.parse(ProxyInfo.serializer(), it)
-    }
+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 +1,66 @@
+/*
+ *     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()
+    translations = Json.decodeFromString<Map<String, String>>(client.newCall(
+        Request.Builder()
+            .url(contentURL + "${Preferences["tag_language", ""]}.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

@@ -21,60 +21,70 @@ package xyz.quaver.pupil.util
 import android.annotation.SuppressLint
 import android.app.DownloadManager
 import android.app.PendingIntent
+import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
+import android.content.IntentFilter
 import android.net.Uri
 import android.util.Base64
+import android.webkit.URLUtil
 import androidx.appcompat.app.AlertDialog
 import androidx.core.app.NotificationCompat
 import androidx.core.app.NotificationManagerCompat
 import androidx.preference.PreferenceManager
-import kotlinx.coroutines.*
-import kotlinx.serialization.json.JsonArray
-import kotlinx.serialization.json.JsonObject
-import kotlinx.serialization.json.boolean
-import kotlinx.serialization.json.content
-import okhttp3.*
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.launch
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.*
+import okhttp3.Call
+import okhttp3.Callback
+import okhttp3.Request
+import okhttp3.Response
 import ru.noties.markwon.Markwon
 import xyz.quaver.hitomi.GalleryBlock
 import xyz.quaver.hitomi.Reader
 import xyz.quaver.hitomi.getGalleryBlock
 import xyz.quaver.hitomi.getReader
-import xyz.quaver.proxy
-import xyz.quaver.pupil.BroadcastReciever
+import xyz.quaver.io.FileX
+import xyz.quaver.io.util.getChild
+import xyz.quaver.io.util.readText
+import xyz.quaver.io.util.writeBytes
+import xyz.quaver.io.util.writeText
 import xyz.quaver.pupil.BuildConfig
 import xyz.quaver.pupil.R
-import xyz.quaver.pupil.util.download.Cache
-import xyz.quaver.pupil.util.download.Metadata
+import xyz.quaver.pupil.client
+import xyz.quaver.pupil.favorites
+import xyz.quaver.pupil.services.DownloadService
+import xyz.quaver.pupil.util.downloader.Cache
+import xyz.quaver.pupil.util.downloader.Metadata
 import java.io.File
 import java.io.IOException
 import java.net.URL
 import java.util.*
-import java.util.concurrent.TimeUnit
 
 fun getReleases(url: String) : JsonArray {
     return try {
         URL(url).readText().let {
-            json.parse(JsonArray.serializer(), it)
+            Json.parseToJsonElement(it).jsonArray
         }
     } catch (e: Exception) {
         JsonArray(emptyList())
     }
 }
 
-fun checkUpdate(context: Context, url: String) : JsonObject? {
+fun checkUpdate(url: String) : JsonObject? {
     val releases = getReleases(url)
 
     if (releases.isEmpty())
         return null
 
     return releases.firstOrNull {
-        if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean("beta", false))
-            true
-        else
-            it.jsonObject["prerelease"]?.boolean == false
+        Preferences["beta"] || it.jsonObject["prerelease"]?.jsonPrimitive?.booleanOrNull == false
     }?.let {
-        if (it.jsonObject["tag_name"]?.content == BuildConfig.VERSION_NAME)
+        if (it.jsonObject["tag_name"]?.jsonPrimitive?.contentOrNull == BuildConfig.VERSION_NAME)
             null
         else
             it.jsonObject
@@ -83,13 +93,12 @@ fun checkUpdate(context: Context, url: String) : JsonObject? {
 
 fun getApkUrl(releases: JsonObject) : String? {
     return releases["assets"]?.jsonArray?.firstOrNull {
-        Regex("Pupil-v.+\\.apk").matches(it.jsonObject["name"]?.content ?: "")
+        Regex("Pupil-v.+\\.apk").matches(it.jsonObject["name"]?.jsonPrimitive?.contentOrNull ?: "")
     }.let {
-        it?.jsonObject?.get("browser_download_url")?.content
+        it?.jsonObject?.get("browser_download_url")?.jsonPrimitive?.contentOrNull
     }
 }
 
-const val UPDATE_NOTIFICATION_ID = 384823
 fun checkUpdate(context: Context, force: Boolean = false) {
 
     val preferences = PreferenceManager.getDefaultSharedPreferences(context)
@@ -99,7 +108,7 @@ fun checkUpdate(context: Context, force: Boolean = false) {
         return
 
     fun extractReleaseNote(update: JsonObject, locale: Locale) : String {
-        val markdown = update["body"]!!.content
+        val markdown = update["body"]!!.jsonPrimitive.content
 
         val target = when(locale.language) {
             "ko" -> "한국어"
@@ -137,12 +146,12 @@ fun checkUpdate(context: Context, force: Boolean = false) {
             }
         }
 
-        return context.getString(R.string.update_release_note, update["tag_name"]?.content, result.toString())
+        return context.getString(R.string.update_release_note, update["tag_name"]?.jsonPrimitive?.contentOrNull, result.toString())
     }
 
     CoroutineScope(Dispatchers.Default).launch {
         val update =
-            checkUpdate(context, context.getString(R.string.release_url)) ?: return@launch
+            checkUpdate(context.getString(R.string.release_url)) ?: return@launch
 
         val url = getApkUrl(update) ?: return@launch
 
@@ -150,15 +159,12 @@ fun checkUpdate(context: Context, force: Boolean = false) {
             setTitle(R.string.update_title)
             val msg = extractReleaseNote(update, Locale.getDefault())
             setMessage(Markwon.create(context).toMarkdown(msg))
-            setPositiveButton(android.R.string.yes) { _, _ ->
-
-                val preference = PreferenceManager.getDefaultSharedPreferences(context)
-
+            setPositiveButton(android.R.string.ok) { _, _ ->
                 val downloadManager = context.getSystemService(Context.DOWNLOAD_SERVICE) as DownloadManager
 
                 //Cancel any download queued before
 
-                val id = preference.getLong("update_download_id", -1)
+                val id: Long = Preferences["update_download_id"]
 
                 if (id != -1L)
                     downloadManager.remove(id)
@@ -172,10 +178,10 @@ fun checkUpdate(context: Context, force: Boolean = false) {
                     .setDestinationUri(Uri.fromFile(target))
 
                 downloadManager.enqueue(request).also {
-                    preference.edit().putLong("update_download_id", it).apply()
+                    Preferences["update_download_id"] = it
                 }
             }
-            setNegativeButton(if (force) android.R.string.no else R.string.ignore_update) { _, _ ->
+            setNegativeButton(if (force) android.R.string.cancel else R.string.ignore_update) { _, _ ->
                 if (!force)
                     preferences.edit()
                         .putLong("ignore_update_until", System.currentTimeMillis() + 604800000)
@@ -189,147 +195,141 @@ fun checkUpdate(context: Context, force: Boolean = false) {
     }
 }
 
-var cancelImport = false
-@SuppressLint("RestrictedApi")
-fun importOldGalleries(context: Context, folder: File) = CoroutineScope(Dispatchers.IO).launch {
-    val client = OkHttpClient.Builder()
-        .connectTimeout(0, TimeUnit.SECONDS)
-        .readTimeout(0, TimeUnit.SECONDS)
-        .proxy(proxy)
+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()
 
-    val cancelIntent = Intent(context, BroadcastReciever::class.java).apply {
-        action = BroadcastReciever.ACTION_CANCEL_IMPORT
-        putExtra(BroadcastReciever.EXTRA_IMPORT_NOTIFICATION_ID, 0)
-    }
-    val pendingIntent = PendingIntent.getBroadcast(context, 0, cancelIntent, 0)
-
-    val notificationManager = NotificationManagerCompat.from(context)
-    val notificationBuilder = NotificationCompat.Builder(context, "import").apply {
-        setContentTitle(context.getText(R.string.import_old_galleries_notification))
-        setProgress(0, 0, true)
-        setSmallIcon(R.drawable.ic_notification)
-        addAction(0, context.getText(android.R.string.cancel), pendingIntent)
-        setOngoing(true)
-    }
-
-    notificationManager.notify(0, notificationBuilder.build())
-
-    if (!folder.isDirectory)
-        return@launch
-
-    val galleryRegex = Regex("""[0-9]+$""")
-    val imageRegex = Regex("""^[0-9]+\..+$""")
-    var size = 0
-    fun setProgress(progress: Int) {
-        notificationBuilder.apply {
-            setContentText(
-                context.getString(
-                    R.string.import_old_galleries_notification_text,
-                    progress,
-                    size
-                )
-            )
-            setProgress(size, progress, false)
+    client.newCall(request).enqueue(object: Callback {
+        override fun onFailure(call: Call, e: IOException) {
+            onFailure?.invoke(e)
         }
 
-        notificationManager.notify(0, notificationBuilder.build())
-    }
-
-    folder.listFiles { _, name ->
-        galleryRegex.matches(name)
-    }?.also {
-        size = it.size
-        setProgress(0)
-    }?.forEachIndexed { index, gallery ->
-        if (cancelImport)
-            return@forEachIndexed
-
-        setProgress(index)
-
-        val galleryID = gallery.name.toIntOrNull() ?: return@forEachIndexed
-
-        File(getDownloadDirectory(context), galleryID.toString()).mkdirs()
-
-        val reader = async {
+        override fun onResponse(call: Call, response: Response) {
             kotlin.runCatching {
-                json.parse(Reader.serializer(), File(gallery, "reader.json").readText())
-            }.getOrElse {
-                getReader(galleryID)
-            }
-        }
-        val galleryBlock = async {
-            kotlin.runCatching {
-                json.parse(GalleryBlock.serializer(), File(gallery, "galleryBlock.json").readText())
-            }.getOrElse {
-                getGalleryBlock(galleryID)
-            }
-        }
-        @Suppress("NAME_SHADOWING")
-        val thumbnail = async thumbnail@{
-            val galleryBlock = galleryBlock.await()
-
-            Base64.encodeToString(try {
-                File(gallery, "thumbnail.jpg").readBytes()
-            } catch (e: Exception) {
-                val url = galleryBlock?.thumbnails?.firstOrNull()
-
-                if (url == null)
-                    null
-                else {
-                    val request = Request.Builder().url(url).build()
-
-                    var done = false
-                    var result: ByteArray? = null
-                    client.newCall(request).enqueue(object : Callback {
-                        override fun onFailure(call: Call?, e: IOException?) {
-                            done = true
-                        }
-
-                        override fun onResponse(call: Call?, response: Response?) {
-                            result = response?.body()?.use {
-                                it.bytes()
-                            }
-                            done = true
-                        }
-                    })
-
-                    if (!done)
-                        yield()
-
-                    result
+                Json.decodeFromString<List<Int>>(response.also { if (it.code() != 200) throw IOException() }.body().use { it?.string() } ?: "[]").let {
+                    favorites.addAll(it)
+                    onSuccess?.invoke(it)
                 }
-            } ?: return@thumbnail null, Base64.DEFAULT)
+            }.onFailure { onFailure?.invoke(it) }
         }
+    })
+}
 
-        Cache(context).setCachedMetadata(galleryID,
-            Metadata(
-                thumbnail.await(),
-                galleryBlock.await(),
-                reader.await()
-            )
-        )
+private var job: Job? = null
+private val receiver = object: BroadcastReceiver() {
+    val ACTION_CANCEL = "ACTION_IMPORT_CANCEL"
+    override fun onReceive(context: Context?, intent: Intent?) {
+        context ?: return
 
-        File(gallery, "images").listFiles { _, name ->
-            imageRegex.matches(name)
-        }?.forEach {
-            if (cancelImport)
-                return@forEach
-
-            @Suppress("NAME_SHADOWING")
-            val index = it.nameWithoutExtension.toIntOrNull() ?: return@forEach
-
-            Cache(context).putImage(galleryID, index, it.extension, it.inputStream())
+        when (intent?.action) {
+            ACTION_CANCEL -> {
+                job?.cancel()
+                NotificationManagerCompat.from(context).cancel(R.id.notification_id_import)
+                context.unregisterReceiver(this)
+            }
         }
     }
+}
+@SuppressLint("RestrictedApi")
+fun xyz.quaver.pupil.util.downloader.DownloadManager.migrate() {
+    registerReceiver(receiver, IntentFilter().apply { addAction(receiver.ACTION_CANCEL) })
 
-    notificationBuilder.apply {
-        setContentText(context.getText(R.string.import_old_galleries_notification_done))
-        setProgress(0, 0, false)
-        setOngoing(false)
-        mActions.clear()
+    val notificationManager = NotificationManagerCompat.from(this)
+    val action = NotificationCompat.Action.Builder(0, getText(android.R.string.cancel),
+        PendingIntent.getBroadcast(this, R.id.notification_import_cancel_action.normalizeID(), Intent(receiver.ACTION_CANCEL), PendingIntent.FLAG_UPDATE_CURRENT)
+    ).build()
+    val notification = NotificationCompat.Builder(this, "import")
+        .setContentTitle(getText(R.string.import_old_galleries_notification))
+        .setProgress(0, 0, true)
+        .addAction(action)
+        .setSmallIcon(R.drawable.ic_notification)
+        .setOngoing(true)
+
+    DownloadService.cancel(this)
+
+    job?.cancel()
+    job = CoroutineScope(Dispatchers.IO).launch {
+        val downloadFolders = downloadFolder.listFiles { folder ->
+            folder.isDirectory && !downloadFolderMap.values.contains(folder.name)
+        }?.map {
+            if (it !is FileX)
+                FileX(this@migrate, it)
+            else
+                it
+        }
+
+        if (downloadFolders.isNullOrEmpty()) return@launch
+
+        downloadFolders.forEachIndexed { index, folder ->
+            notification
+                .setContentText(getString(R.string.import_old_galleries_notification_text, index, downloadFolders.size))
+                .setProgress(index, downloadFolders.size, false)
+            notificationManager.notify(R.id.notification_id_import, notification.build())
+
+            kotlin.runCatching {
+                val metadata = kotlin.runCatching {
+                    folder.getChild(".metadata").readText()?.let { Json.parseToJsonElement(it).jsonObject }
+                }.getOrNull()
+
+                val galleryID = folder.name.toIntOrNull() ?: return@runCatching
+
+                val galleryBlock: GalleryBlock? = kotlin.runCatching {
+                    metadata?.get("galleryBlock")?.let { Json.decodeFromJsonElement<GalleryBlock>(it) }
+                }.getOrNull() ?: getGalleryBlock(galleryID)
+                val reader: Reader? = kotlin.runCatching {
+                    metadata?.get("reader")?.let { Json.decodeFromJsonElement<Reader>(it) }
+                }.getOrNull() ?: getReader(galleryID)
+
+                metadata?.get("thumbnail")?.jsonPrimitive?.contentOrNull?.also { thumbnail ->
+                    val file = folder.getChild(".thumbnail").also {
+                        if (it.exists())
+                            it.delete()
+                        it.createNewFile()
+                    }
+
+                    file.writeBytes(Base64.decode(thumbnail, Base64.DEFAULT))
+                }
+
+                val list: MutableList<String?> =
+                    MutableList(reader!!.galleryInfo.files.size) { null }
+
+                folder.listFiles { file ->
+                    file?.nameWithoutExtension?.let {
+                        Regex("""\d{5}""").matches(it) && it.toIntOrNull() != null
+                    } == true
+                }?.forEach {
+                    list[it.nameWithoutExtension.toInt()] = it.name
+                }
+
+                folder.getChild(".metadata").also { if (it.exists()) it.delete(); it.createNewFile() }.writeText(
+                    Json.encodeToString(Metadata(galleryBlock, reader, list))
+                )
+
+                synchronized(Cache) {
+                    Cache.delete(this@migrate, galleryID)
+                }
+                downloadFolderMap[galleryID] = folder.name
+
+                downloadFolder.getChild(".download").let { if (!it.exists()) it.createNewFile(); it.writeText(Json.encodeToString(downloadFolderMap)) }
+            }
+        }
+
+        notification
+            .setContentText(getText(R.string.import_old_galleries_notification_done))
+            .setProgress(0, 0, false)
+            .setOngoing(false)
+            .mActions.clear()
+        notificationManager.notify(R.id.notification_id_import, notification.build())
+
+        kotlin.runCatching {
+            unregisterReceiver(receiver)
+        }
     }
-    notificationManager.notify(0, notificationBuilder.build())
-
-    cancelImport = false
 }

app/src/main/res/drawable/account_group.xml

@@ -1,8 +1,4 @@
-<!-- drawable/account_group.xml -->
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:height="24dp"
-    android:width="24dp"
-    android:viewportWidth="24"
-    android:viewportHeight="24">
-    <path android:fillColor="?attr/colorControlNormal" android:pathData="M12,5.5A3.5,3.5 0 0,1 15.5,9A3.5,3.5 0 0,1 12,12.5A3.5,3.5 0 0,1 8.5,9A3.5,3.5 0 0,1 12,5.5M5,8C5.56,8 6.08,8.15 6.53,8.42C6.38,9.85 6.8,11.27 7.66,12.38C7.16,13.34 6.16,14 5,14A3,3 0 0,1 2,11A3,3 0 0,1 5,8M19,8A3,3 0 0,1 22,11A3,3 0 0,1 19,14C17.84,14 16.84,13.34 16.34,12.38C17.2,11.27 17.62,9.85 17.47,8.42C17.92,8.15 18.44,8 19,8M5.5,18.25C5.5,16.18 8.41,14.5 12,14.5C15.59,14.5 18.5,16.18 18.5,18.25V20H5.5V18.25M0,20V18.5C0,17.11 1.89,15.94 4.45,15.6C3.86,16.28 3.5,17.22 3.5,18.25V20H0M24,20H20.5V18.25C20.5,17.22 20.14,16.28 19.55,15.6C22.11,15.94 24,17.11 24,18.5V20Z" />
-</vector>
+<!--drawable/account_group.xml-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:width="24dp" android:viewportWidth="24" android:viewportHeight="24">
+    <path android:fillColor="?attr/colorControlNormal" android:pathData="M12 5.5A3.5 3.5 0 0 1 15.5 9a3.5 3.5 0 0 1-3.5 3.5A3.5 3.5 0 0 1 8.5 9 3.5 3.5 0 0 1 12 5.5M5 8c0.56 0 1.08 0.15 1.53 0.42-0.15 1.43 0.27 2.85 1.13 3.96C7.16 13.34 6.16 14 5 14a3 3 0 0 1-3-3 3 3 0 0 1 3-3m14 0a3 3 0 0 1 3 3 3 3 0 0 1-3 3c-1.16 0-2.16-0.66-2.66-1.62 0.86-1.11 1.28-2.53 1.13-3.96C17.92 8.15 18.44 8 19 8M5.5 18.25c0-2.07 2.91-3.75 6.5-3.75s6.5 1.68 6.5 3.75V20h-13v-1.75M0 20v-1.5c0-1.39 1.89-2.56 4.45-2.9-0.59 0.68-0.95 1.62-0.95 2.65V20H0m24 0h-3.5v-1.75c0-1.03-0.36-1.97-0.95-2.65 2.56 0.34 4.45 1.51 4.45 2.9V20z"/>
+</vector>

app/src/main/res/drawable/account_star.xml

@@ -1,8 +1,4 @@
-<!-- drawable/account_star.xml -->
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:height="24dp"
-    android:width="24dp"
-    android:viewportWidth="24"
-    android:viewportHeight="24">
-    <path android:fillColor="?attr/colorControlNormal" android:pathData="M15,14C12.33,14 7,15.33 7,18V20H23V18C23,15.33 17.67,14 15,14M15,12A4,4 0 0,0 19,8A4,4 0 0,0 15,4A4,4 0 0,0 11,8A4,4 0 0,0 15,12M5,13.28L7.45,14.77L6.8,11.96L9,10.08L6.11,9.83L5,7.19L3.87,9.83L1,10.08L3.18,11.96L2.5,14.77L5,13.28Z" />
-</vector>
+<!--drawable/account_star.xml-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:width="24dp" android:viewportWidth="24" android:viewportHeight="24">
+    <path android:fillColor="?attr/colorControlNormal" android:pathData="M15 14c-2.67 0-8 1.33-8 4v2h16v-2c0-2.67-5.33-4-8-4m0-2a4 4 0 0 0 4-4 4 4 0 0 0-4-4 4 4 0 0 0-4 4 4 4 0 0 0 4 4M5 13.28l2.45 1.49-0.65-2.81L9 10.08 6.11 9.83 5 7.19 3.87 9.83 1 10.08l2.18 1.88-0.68 2.81L5 13.28z"/>
+</vector>

app/src/main/res/drawable/arrow_right.xml

@@ -1,8 +1,4 @@
-<!-- drawable/arrow_right.xml -->
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:height="24dp"
-    android:width="24dp"
-    android:viewportWidth="24"
-    android:viewportHeight="24">
-    <path android:fillColor="#fff" android:pathData="M4,11V13H16L10.5,18.5L11.92,19.92L19.84,12L11.92,4.08L10.5,5.5L16,11H4Z" />
-</vector>
+<!--drawable/arrow_right.xml-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:width="24dp" android:viewportWidth="24" android:viewportHeight="24">
+    <path android:fillColor="#fff" android:pathData="M4 11v2h12l-5.5 5.5 1.42 1.42L19.84 12l-7.92-7.92L10.5 5.5 16 11H4z"/>
+</vector>

app/src/main/res/drawable/avd_star.xml

@@ -1,37 +1,14 @@
-<animated-vector
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:aapt="http://schemas.android.com/aapt"
-    xmlns:tools="http://schemas.android.com/tools"
-    tools:ignore="newApi">
+<animated-vector xmlns:android="http://schemas.android.com/apk/res/android" xmlns:aapt="http://schemas.android.com/aapt" xmlns:tools="http://schemas.android.com/tools" tools:ignore="newApi">
     <aapt:attr name="android:drawable">
-        <vector
-            android:name="vector"
-            android:width="24dp"
-            android:height="24dp"
-            android:viewportWidth="24"
-            android:viewportHeight="24">
-            <path
-                android:name="path"
-                android:pathData="M 12 15.39 L 8.24 17.66 L 9.23 13.38 L 5.91 10.5 L 10.29 10.13 L 12 6.09 L 13.71 10.13 L 18.09 10.5 L 14.77 13.38 L 15.76 17.66 M 22 9.24 L 14.81 8.63 L 12 2 L 9.19 8.63 L 2 9.24 L 7.45 13.97 L 5.82 21 L 12 17.27 L 18.18 21 L 16.54 13.97 L 22 9.24 Z"
-                android:fillColor="@color/material_orange_500"/>
-            <clip-path
-                android:name="clip"
-                android:pathData="M 2 21 L 2 21 L 22 21 L 22 21 Z"/>
-            <path
-                android:name="path_1"
-                android:pathData="M 12 17.27 L 18.18 21 L 16.54 13.97 L 22 9.24 L 14.81 8.62 L 12 2 L 9.19 8.62 L 2 9.24 L 7.45 13.97 L 5.82 21 L 12 17.27 Z"
-                android:fillColor="@color/material_orange_500"/>
+        <vector android:name="vector" android:width="24dp" android:height="24dp" android:viewportWidth="24" android:viewportHeight="24">
+            <path android:name="path" android:pathData="M 12 15.39 L 8.24 17.66 L 9.23 13.38 L 5.91 10.5 L 10.29 10.13 L 12 6.09 L 13.71 10.13 L 18.09 10.5 L 14.77 13.38 L 15.76 17.66 M 22 9.24 L 14.81 8.63 L 12 2 L 9.19 8.63 L 2 9.24 L 7.45 13.97 L 5.82 21 L 12 17.27 L 18.18 21 L 16.54 13.97 L 22 9.24 Z" android:fillColor="@color/material_orange_500"/>
+            <clip-path android:name="clip" android:pathData="M 2 21 L 2 21 L 22 21 L 22 21 Z"/>
+            <path android:name="path_1" android:pathData="M 12 17.27 L 18.18 21 L 16.54 13.97 L 22 9.24 L 14.81 8.62 L 12 2 L 9.19 8.62 L 2 9.24 L 7.45 13.97 L 5.82 21 L 12 17.27 Z" android:fillColor="@color/material_orange_500"/>
         </vector>
     </aapt:attr>
     <target android:name="clip">
         <aapt:attr name="android:animation">
-            <objectAnimator
-                android:propertyName="pathData"
-                android:duration="500"
-                android:valueFrom="M 2 21 L 2 21 L 22 21 L 22 21 Z"
-                android:valueTo="M 2 2 L 2 21 L 22 21 L 22 2 Z"
-                android:valueType="pathType"
-                android:interpolator="@android:interpolator/fast_out_slow_in"/>
+            <objectAnimator android:propertyName="pathData" android:duration="500" android:valueFrom="M 2 21 L 2 21 L 22 21 L 22 21 Z" android:valueTo="M 2 2 L 2 21 L 22 21 L 22 2 Z" android:valueType="pathType" android:interpolator="@android:interpolator/fast_out_slow_in"/>
         </aapt:attr>
     </target>
 </animated-vector>

app/src/main/res/drawable/backspace_outline.xml

@@ -1,8 +1,4 @@
-<!-- drawable/backspace_outline.xml -->
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:height="24dp"
-    android:width="24dp"
-    android:viewportWidth="24"
-    android:viewportHeight="24">
-    <path android:fillColor="#000" android:pathData="M19,15.59L17.59,17L14,13.41L10.41,17L9,15.59L12.59,12L9,8.41L10.41,7L14,10.59L17.59,7L19,8.41L15.41,12L19,15.59M22,3A2,2 0 0,1 24,5V19A2,2 0 0,1 22,21H7C6.31,21 5.77,20.64 5.41,20.11L0,12L5.41,3.88C5.77,3.35 6.31,3 7,3H22M22,5H7L2.28,12L7,19H22V5Z" />
-</vector>
+<!--drawable/backspace_outline.xml-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:width="24dp" android:viewportWidth="24" android:viewportHeight="24">
+    <path android:fillColor="#000" android:pathData="M19 15.59L17.59 17 14 13.41 10.41 17 9 15.59 12.59 12 9 8.41 10.41 7 14 10.59 17.59 7 19 8.41 15.41 12 19 15.59M22 3a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2H7c-0.69 0-1.23-0.36-1.59-0.89L0 12l5.41-8.12C5.77 3.35 6.31 3 7 3h15m0 2H7l-4.72 7L7 19h15V5z"/>
+</vector>

app/src/main/res/drawable/book_open.xml

@@ -1,8 +1,4 @@
-<!-- drawable/book_open.xml -->
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:height="24dp"
-    android:width="24dp"
-    android:viewportWidth="24"
-    android:viewportHeight="24">
-    <path android:fillColor="?attr/colorControlNormal" android:pathData="M13,12H20V13.5H13M13,9.5H20V11H13M13,14.5H20V16H13M21,4H3A2,2 0 0,0 1,6V19A2,2 0 0,0 3,21H21A2,2 0 0,0 23,19V6A2,2 0 0,0 21,4M21,19H12V6H21" />
-</vector>
+<!--drawable/book_open.xml-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:width="24dp" android:viewportWidth="24" android:viewportHeight="24">
+    <path android:fillColor="?attr/colorControlNormal" android:pathData="M13 12h7v1.5h-7m0-4h7V11h-7m0 3.5h7V16h-7m8-12H3a2 2 0 0 0-2 2v13a2 2 0 0 0 2 2h18a2 2 0 0 0 2-2V6a2 2 0 0 0-2-2m0 15h-9V6h9"/>
+</vector>

app/src/main/res/drawable/brush.xml

@@ -1,8 +1,4 @@
-<!-- drawable/brush.xml -->
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:height="24dp"
-    android:width="24dp"
-    android:viewportWidth="24"
-    android:viewportHeight="24">
-    <path android:fillColor="?attr/colorControlNormal" android:pathData="M20.71,4.63L19.37,3.29C19,2.9 18.35,2.9 17.96,3.29L9,12.25L11.75,15L20.71,6.04C21.1,5.65 21.1,5 20.71,4.63M7,14A3,3 0 0,0 4,17C4,18.31 2.84,19 2,19C2.92,20.22 4.5,21 6,21A4,4 0 0,0 10,17A3,3 0 0,0 7,14Z" />
-</vector>
+<!--drawable/brush.xml-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:width="24dp" android:viewportWidth="24" android:viewportHeight="24">
+    <path android:fillColor="?attr/colorControlNormal" android:pathData="M20.71 4.63l-1.34-1.34c-0.37-0.39-1.02-0.39-1.41 0L9 12.25 11.75 15l8.96-8.96c0.39-0.39 0.39-1.04 0-1.41M7 14a3 3 0 0 0-3 3c0 1.31-1.16 2-2 2 0.92 1.22 2.5 2 4 2a4 4 0 0 0 4-4 3 3 0 0 0-3-3z"/>
+</vector>

app/src/main/res/drawable/cancel.xml

@@ -1,8 +1,4 @@
-<!-- drawable/cancel.xml -->
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:height="24dp"
-    android:width="24dp"
-    android:viewportWidth="24"
-    android:viewportHeight="24">
-    <path android:fillColor="#fff" android:pathData="M12,2A10,10 0 0,1 22,12A10,10 0 0,1 12,22A10,10 0 0,1 2,12A10,10 0 0,1 12,2M12,4A8,8 0 0,0 4,12C4,13.85 4.63,15.55 5.68,16.91L16.91,5.68C15.55,4.63 13.85,4 12,4M12,20A8,8 0 0,0 20,12C20,10.15 19.37,8.45 18.32,7.09L7.09,18.32C8.45,19.37 10.15,20 12,20Z" />
-</vector>
+<!--drawable/cancel.xml-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:width="24dp" android:viewportWidth="24" android:viewportHeight="24">
+    <path android:fillColor="#fff" android:pathData="M12 2a10 10 0 0 1 10 10 10 10 0 0 1-10 10A10 10 0 0 1 2 12 10 10 0 0 1 12 2m0 2a8 8 0 0 0-8 8c0 1.85 0.63 3.55 1.68 4.91L16.91 5.68C15.55 4.63 13.85 4 12 4m0 16a8 8 0 0 0 8-8c0-1.85-0.63-3.55-1.68-4.91L7.09 18.32C8.45 19.37 10.15 20 12 20z"/>
+</vector>

app/src/main/res/drawable/clock_end.xml

@@ -0,0 +1,4 @@
+<!--drawable/clock_end.xml-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:width="24dp" android:viewportWidth="24" android:viewportHeight="24">
+    <path android:fillColor="#fff" android:pathData="M12 1C8.14 1 5 4.14 5 8a7 7 0 0 0 7 7c3.86 0 7-3.13 7-7 0-3.86-3.14-7-7-7m0 2.15c2.67 0 4.85 2.17 4.85 4.85 0 2.68-2.18 4.85-4.85 4.85A4.85 4.85 0 0 1 7.15 8 4.85 4.85 0 0 1 12 3.15M11 5v3.69l3.19 1.84 0.75-1.3-2.44-1.41V5M15 16v3H3v2h12v3l4-4m0 0v4h2v-8h-2"/>
+</vector>

app/src/main/res/drawable/clock_start.xml

@@ -0,0 +1,4 @@
+<!--drawable/clock_start.xml-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:width="24dp" android:viewportWidth="24" android:viewportHeight="24">
+    <path android:fillColor="#fff" android:pathData="M12 1C8.14 1 5 4.14 5 8a7 7 0 0 0 7 7c3.86 0 7-3.13 7-7 0-3.86-3.14-7-7-7m0 2.15c2.67 0 4.85 2.17 4.85 4.85 0 2.68-2.18 4.85-4.85 4.85A4.85 4.85 0 0 1 7.15 8 4.85 4.85 0 0 1 12 3.15M11 5v3.69l3.19 1.84 0.75-1.3-2.44-1.41V5M4 16v8h2v-3h12v3l4-4-4-4v3H6v-3"/>
+</vector>

app/src/main/res/drawable/close.xml

@@ -0,0 +1,4 @@
+<!--drawable/close.xml-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:width="24dp" android:viewportWidth="24" android:viewportHeight="24">
+    <path android:fillColor="?attr/colorControlNormal" android:pathData="M19 6.41L17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59 19 19 17.59 13.41 12 19 6.41z"/>
+</vector>

app/src/main/res/drawable/delete.xml

@@ -0,0 +1,4 @@
+<!--drawable/delete.xml-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:width="24dp" android:viewportWidth="24" android:viewportHeight="24">
+    <path android:fillColor="?attr/colorControlNormal" android:pathData="M19 4h-3.5l-1-1h-5l-1 1H5v2h14M6 19a2 2 0 0 0 2 2h8a2 2 0 0 0 2-2V7H6v12z"/>
+</vector>

app/src/main/res/drawable/dot.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!--
   ~     Pupil, Hitomi.la viewer for Android
-  ~     Copyright (C) 2019  tom5079
+  ~     Copyright (C) 2020  tom5079
   ~
   ~     This program is free software: you can redistribute it and/or modify
   ~     it under the terms of the GNU General Public License as published by
@@ -17,12 +17,14 @@
   ~     along with this program.  If not, see <http://www.gnu.org/licenses/>.
   -->
 
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical"
-	android:layout_width="match_parent" android:layout_height="wrap_content">
+<shape
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="oval">
 
-	<ProgressBar
-		android:layout_width="wrap_content"
-		android:layout_height="wrap_content"
-		android:layout_gravity="center_horizontal"/>
+    <solid
+        android:color="@color/colorAccent"/>
 
-</LinearLayout>
+    <size
+        android:width="24dp"
+        android:height="24dp"/>
+</shape>

app/src/main/res/drawable/eye.xml

@@ -0,0 +1,8 @@
+<!-- drawable/eye.xml -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="24dp"
+    android:width="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path android:fillColor="?attr/colorControlNormal" android:pathData="M12,9A3,3 0 0,0 9,12A3,3 0 0,0 12,15A3,3 0 0,0 15,12A3,3 0 0,0 12,9M12,17A5,5 0 0,1 7,12A5,5 0 0,1 12,7A5,5 0 0,1 17,12A5,5 0 0,1 12,17M12,4.5C7,4.5 2.73,7.61 1,12C2.73,16.39 7,19.5 12,19.5C17,19.5 21.27,16.39 23,12C21.27,7.61 17,4.5 12,4.5Z" />
+</vector>

app/src/main/res/drawable/eye_closed.xml

@@ -0,0 +1,44 @@
+<!--
+  ~     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/>.
+  -->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="22dp"
+    android:height="15dp"
+    android:viewportWidth="22"
+    android:viewportHeight="15">
+  <path
+      android:pathData="M21.61,5.4C14.21,13.39 7.16,13.37 0.43,5.32"
+      android:strokeWidth="1"
+      android:strokeColor="?attr/colorControlNormal"/>
+  <path
+      android:pathData="M1.32,9.8L3.03,7.8"
+      android:strokeWidth="1"
+      android:strokeColor="?attr/colorControlNormal"/>
+  <path
+      android:pathData="M5.14,12.37L6.16,10.37"
+      android:strokeWidth="1"
+      android:strokeColor="?attr/colorControlNormal"/>
+  <path
+      android:pathData="M16.27,12.37L15.25,10.37"
+      android:strokeWidth="1"
+      android:strokeColor="?attr/colorControlNormal"/>
+  <path
+      android:pathData="M18.78,7.8L20.49,9.8"
+      android:strokeWidth="1"
+      android:strokeColor="?attr/colorControlNormal"/>
+</vector>

app/src/main/res/drawable/eye_off.xml

@@ -0,0 +1,8 @@
+<!-- drawable/eye_off.xml -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="24dp"
+    android:width="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path android:fillColor="?attr/colorControlNormal" android:pathData="M11.83,9L15,12.16C15,12.11 15,12.05 15,12A3,3 0 0,0 12,9C11.94,9 11.89,9 11.83,9M7.53,9.8L9.08,11.35C9.03,11.56 9,11.77 9,12A3,3 0 0,0 12,15C12.22,15 12.44,14.97 12.65,14.92L14.2,16.47C13.53,16.8 12.79,17 12,17A5,5 0 0,1 7,12C7,11.21 7.2,10.47 7.53,9.8M2,4.27L4.28,6.55L4.73,7C3.08,8.3 1.78,10 1,12C2.73,16.39 7,19.5 12,19.5C13.55,19.5 15.03,19.2 16.38,18.66L16.81,19.08L19.73,22L21,20.73L3.27,3M12,7A5,5 0 0,1 17,12C17,12.64 16.87,13.26 16.64,13.82L19.57,16.75C21.07,15.5 22.27,13.86 23,12C21.27,7.61 17,4.5 12,4.5C10.6,4.5 9.26,4.75 8,5.2L10.17,7.35C10.74,7.13 11.35,7 12,7Z" />
+</vector>

app/src/main/res/drawable/eye_off_white.xml

@@ -0,0 +1,8 @@
+<!-- drawable/eye_off.xml -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="24dp"
+    android:width="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path android:fillColor="#fff" android:pathData="M11.83,9L15,12.16C15,12.11 15,12.05 15,12A3,3 0 0,0 12,9C11.94,9 11.89,9 11.83,9M7.53,9.8L9.08,11.35C9.03,11.56 9,11.77 9,12A3,3 0 0,0 12,15C12.22,15 12.44,14.97 12.65,14.92L14.2,16.47C13.53,16.8 12.79,17 12,17A5,5 0 0,1 7,12C7,11.21 7.2,10.47 7.53,9.8M2,4.27L4.28,6.55L4.73,7C3.08,8.3 1.78,10 1,12C2.73,16.39 7,19.5 12,19.5C13.55,19.5 15.03,19.2 16.38,18.66L16.81,19.08L19.73,22L21,20.73L3.27,3M12,7A5,5 0 0,1 17,12C17,12.64 16.87,13.26 16.64,13.82L19.57,16.75C21.07,15.5 22.27,13.86 23,12C21.27,7.61 17,4.5 12,4.5C10.6,4.5 9.26,4.75 8,5.2L10.17,7.35C10.74,7.13 11.35,7 12,7Z" />
+</vector>