[Issue template] Update version

This reverts commit fdd4f5abca.

.editorconfig

@@ -0,0 +1,19 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 4
+indent_style = tab
+insert_final_newline = false
+max_line_length = 120
+tab_width = 4
+# noinspection EditorConfigKeyCorrectness
+disabled_rules=no-wildcard-imports,no-unused-imports
+
+[{*.ant,*.fxml,*.jhm,*.jnlp,*.jrxml,*.rng,*.tld,*.wsdl,*.xml,*.xsd,*.xsl,*.xslt,*.xul}]
+ij_continuation_indent_size = 4
+
+[{*.kt,*.kts}]
+ij_kotlin_allow_trailing_comma = true
+ij_kotlin_code_style_defaults = KOTLIN_OFFICIAL

.github/FUNDING.yml

@@ -1 +1 @@
-custom: ["https://money.yandex.ru/to/410012543938752"]
+custom: ["https://yoomoney.ru/to/410012543938752"]

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: false
+contact_links:
+    - name: ⚠️ Source issue
+      url: https://github.com/nv95/kotatsu-parsers/issues/new
+      about: Issues and requests for sources should be opened in the kotatsu-parsers repository instead

.github/ISSUE_TEMPLATE/report_issue.yml

@@ -0,0 +1,93 @@
+name: 🐞 Issue report
+description: Report an issue in Kotatsu
+labels: [bug]
+body:
+
+    - type: textarea
+      id: reproduce-steps
+      attributes:
+          label: Steps to reproduce
+          description: Provide an example of the issue.
+          placeholder: |
+              Example:
+                1. First step
+                2. Second step
+                3. Issue here
+      validations:
+          required: true
+
+    - type: textarea
+      id: expected-behavior
+      attributes:
+          label: Expected behavior
+          description: Explain what you should expect to happen.
+          placeholder: |
+              Example:
+                "This should happen..."
+      validations:
+          required: true
+
+    - type: textarea
+      id: actual-behavior
+      attributes:
+          label: Actual behavior
+          description: Explain what actually happens.
+          placeholder: |
+              Example:
+                "This happened instead..."
+      validations:
+          required: true
+
+    - type: input
+      id: kotatsu-version
+      attributes:
+          label: Kotatsu version
+          description: You can find your Kotatsu version in **Settings → About**.
+          placeholder: |
+              Example: "3.2.2"
+      validations:
+          required: true
+
+    - type: input
+      id: android-version
+      attributes:
+          label: Android version
+          description: You can find this somewhere in your Android settings.
+          placeholder: |
+              Example: "Android 12"
+      validations:
+          required: true
+
+    - type: input
+      id: device
+      attributes:
+          label: Device
+          description: List your device and model.
+          placeholder: |
+              Example: "LG Nexus 5X"
+      validations:
+          required: true
+
+    - type: textarea
+      id: other-details
+      attributes:
+          label: Other details
+          placeholder: |
+              Additional details and attachments.
+
+    - type: checkboxes
+      id: acknowledgements
+      attributes:
+          label: Acknowledgements
+          description: Read this carefully, we will close and ignore your issue if you skimmed through this.
+          options:
+              - label: I have searched the existing issues and this is a new ticket, **NOT** a duplicate or related to another open issue.
+                required: true
+              - label: I have written a short but informative title.
+                required: true
+              - label: If this is an issue with a source, I should be opening an issue in the [parsers repository](https://github.com/nv95/kotatsu-parsers/issues/new).
+                required: true
+              - label: I have updated the app to version **[3.2.2](https://github.com/nv95/Kotatsu/releases/latest)**.
+                required: true
+              - label: I will fill out all of the requested information in this form.
+                required: true

.github/ISSUE_TEMPLATE/request_feature.yml

@@ -0,0 +1,39 @@
+name: ⭐ Feature request
+description: Suggest a feature to improve Kotatsu
+labels: [feature request]
+body:
+
+    - type: textarea
+      id: feature-description
+      attributes:
+          label: Describe your suggested feature
+          description: How can Kotatsu be improved?
+          placeholder: |
+              Example:
+                "It should work like this..."
+      validations:
+          required: true
+
+    - type: textarea
+      id: other-details
+      attributes:
+          label: Other details
+          placeholder: |
+              Additional details and attachments.
+
+    - type: checkboxes
+      id: acknowledgements
+      attributes:
+          label: Acknowledgements
+          description: Read this carefully, we will close and ignore your issue if you skimmed through this.
+          options:
+              - label: I have searched the existing issues and this is a new ticket, **NOT** a duplicate or related to another open issue.
+                required: true
+              - label: I have written a short but informative title.
+                required: true
+              - label: If this is an issue with a source, I should be opening an issue in the [parsers repository](https://github.com/nv95/kotatsu-parsers/issues/new).
+                required: true
+              - label: I have updated the app to version **[3.2.2](https://github.com/nv95/Kotatsu/releases/latest)**.
+                required: true
+              - label: I will fill out all of the requested information in this form.
+                required: true

.gitignore

@@ -3,10 +3,14 @@
 /local.properties
 /.idea/caches
 /.idea/libraries
+/.idea/dictionaries
 /.idea/modules.xml
+/.idea/misc.xml
 /.idea/workspace.xml
 /.idea/navEditor.xml
 /.idea/assetWizardSettings.xml
+/.idea/kotlinScripting.xml
+/.idea/deploymentTargetDropDown.xml
 .DS_Store
 /build
 /captures

.idea/codeStyles/Project.xml

@@ -23,6 +23,7 @@
       </option>
     </AndroidXmlCodeStyleSettings>
     <JetCodeStyleSettings>
+      <option name="ALLOW_TRAILING_COMMA" value="true" />
       <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
     </JetCodeStyleSettings>
     <codeStyleSettings language="CMake">

.idea/compiler.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="CompilerConfiguration">
-    <bytecodeTargetLevel target="1.8" />
+    <bytecodeTargetLevel target="11" />
   </component>
 </project>

.idea/dictionaries/admin.xml

@@ -1,14 +0,0 @@
-<component name="ProjectDictionaryState">
-  <dictionary name="admin">
-    <words>
-      <w>chucker</w>
-      <w>desu</w>
-      <w>failsafe</w>
-      <w>koin</w>
-      <w>kotatsu</w>
-      <w>manga</w>
-      <w>upsert</w>
-      <w>webtoon</w>
-    </words>
-  </dictionary>
-</component>

.idea/gradle.xml

@@ -4,18 +4,16 @@
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
-        <option name="testRunner" value="PLATFORM" />
+        <option name="testRunner" value="GRADLE" />
         <option name="distributionType" value="DEFAULT_WRAPPED" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleJvm" value="1.8" />
+        <option name="gradleJvm" value="Android Studio default JDK" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />
             <option value="$PROJECT_DIR$/app" />
           </set>
         </option>
-        <option name="resolveModulePerSourceSet" value="false" />
-        <option name="useQualifiedModuleNames" value="true" />
       </GradleProjectSettings>
     </option>
   </component>

.idea/inspectionProfiles/Project_Default.xml

@@ -1,7 +1,11 @@
 <component name="InspectionProjectProfileManager">
   <profile version="1.0">
     <option name="myName" value="Project Default" />
-    <inspection_tool class="BooleanLiteralArgument" enabled="true" level="WEAK WARNING" enabled_by_default="true" />
+    <inspection_tool class="BooleanLiteralArgument" enabled="false" level="WEAK WARNING" enabled_by_default="false" />
+    <inspection_tool class="Destructure" enabled="true" level="INFO" enabled_by_default="true" />
+    <inspection_tool class="KeySetIterationMayUseEntrySet" enabled="true" level="WARNING" enabled_by_default="true" />
+    <inspection_tool class="ReplaceCollectionCountWithSize" enabled="true" level="WEAK WARNING" enabled_by_default="true" />
     <inspection_tool class="TrailingComma" enabled="true" level="INFORMATION" enabled_by_default="true" />
+    <inspection_tool class="ZeroLengthArrayInitialization" enabled="true" level="WARNING" enabled_by_default="true" />
   </profile>
 </component>

.idea/jarRepositories.xml

@@ -31,5 +31,15 @@
       <option name="name" value="maven2" />
       <option name="url" value="https://dl.bintray.com/kotlin/kotlin-eap" />
     </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenRepo" />
+      <option name="name" value="MavenRepo" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="maven2" />
+      <option name="name" value="maven2" />
+      <option name="url" value="https://maven.pkg.github.com/nv95/kotatsu-parsers" />
+    </remote-repository>
   </component>
 </project>

.idea/ktlint.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="KtlintProjectConfiguration">
+    <androidMode>true</androidMode>
+    <treatAsErrors>false</treatAsErrors>
+  </component>
+</project>

.idea/misc.xml

@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
-    <output url="file://$PROJECT_DIR$/build/classes" />
-  </component>
-  <component name="ProjectType">
-    <option name="id" value="Android" />
-  </component>
-</project>

.idea/runConfigurations.xml

@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="RunConfigurationProducerService">
-    <option name="ignoredProducers">
-      <set>
-        <option value="org.jetbrains.plugins.gradle.execution.test.runner.AllInPackageGradleConfigurationProducer" />
-        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestClassGradleConfigurationProducer" />
-        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestMethodGradleConfigurationProducer" />
-      </set>
-    </option>
-  </component>
-</project>

.travis.yml

@@ -1,15 +1,11 @@
 language: android
 dist: trusty
-jdk:
-  - oraclejdk8
 android:
   components:
+    - android-30
+    - build-tools-30.0.3
+    - platform-tools-30.0.5
     - tools
-    - platform-tools-29.0.6
-    - build-tools-29.0.3
-    - android-29
-  licenses:
-    - android-sdk-preview-license-.+
-    - android-sdk-license-.+
-    - google-gdk-license-.+
+before_install:
+  - yes | sdkmanager "platforms;android-30"
 script: ./gradlew -Dorg.gradle.jvmargs=-Xmx1536m assembleDebug lintDebug

README.md

@@ -2,33 +2,48 @@
 
 Kotatsu is a free and open source manga reader for Android.
 
-![Android 5.0](https://img.shields.io/badge/android-5.0+-brightgreen) ![Kotlin](https://img.shields.io/github/languages/top/nv95/Kotatsu) [![Build Status](https://travis-ci.org/nv95/Kotatsu.svg?branch=master)](https://travis-ci.org/nv95/Kotatsu) ![License](https://img.shields.io/github/license/nv95/Kotatsu) [![4pda](https://img.shields.io/badge/discuss-4pda-2982CC)](http://4pda.ru/forum/index.php?showtopic=697669)
+![Android 5.0](https://img.shields.io/badge/android-5.0+-brightgreen) ![Kotlin](https://img.shields.io/github/languages/top/nv95/Kotatsu) [![Build Status](https://travis-ci.org/nv95/Kotatsu.svg?branch=master)](https://travis-ci.org/nv95/Kotatsu) ![License](https://img.shields.io/github/license/nv95/Kotatsu) [![weblate](https://hosted.weblate.org/widgets/kotatsu/-/strings/svg-badge.svg)](https://hosted.weblate.org/engage/kotatsu/) [![4pda](https://img.shields.io/badge/discuss-4pda-2982CC)](http://4pda.ru/forum/index.php?showtopic=697669) [![Discord](https://img.shields.io/discord/898363402467045416?color=5865f2&label=discord)](https://discord.gg/NNJ5RgVBC5)
 
 ### Download
 
-Latest release: [get here](https://github.com/nv95/Kotatsu/releases/latest)
+[<img src="https://fdroid.gitlab.io/artwork/badge/get-it-on.png"
+alt="Get it on F-Droid"
+height="80">](https://f-droid.org/packages/org.koitharu.kotatsu)
 
-Legacy build (Android 4.1+): [available here](https://github.com/nv95/Kotatsu/releases/tag/v0.4-legacy)
+Download APK from Github Releases:
+
+- [Latest release](https://github.com/nv95/Kotatsu/releases/latest)
+- [Legacy build](https://github.com/nv95/Kotatsu/releases/tag/v0.4-legacy) (with Android 4.1+ support)
 
 ### Main Features
 
 * Online manga catalogues
 * Search manga by name and genre
 * Reading history
-* Favourites with custom categories
-* Saving manga and reading it offline
-* Tablet-optimized modern UI
-* Reading third-party comics from CBZ
+* Favourites organized by user-defined categories
+* Downloading manga and reading it offline. Third-party CBZ archives also supported
+* Tablet-optimized material design UI
 * Standard and Webtoon-optimized reader
-* Notifications about new chapters
-* Updates feed
-* Global search
+* Notifications about new chapters with updates feed
+* Available in multiple languages
+* Password protect access to the app
 
 ### Screenshots
 
-| ![Screenshot_20200226-210337](https://user-images.githubusercontent.com/8948226/80315102-3478db00-87fe-11ea-9ce8-4bbd1c254b2b.png) | ![Screenshot_20200226-210310](https://user-images.githubusercontent.com/8948226/80315110-3f337000-87fe-11ea-95df-944c196b6667.png) | ![Screenshot_20200226-210232](https://user-images.githubusercontent.com/8948226/80315121-49ee0500-87fe-11ea-8d9b-537a041bbf2f.png) |
-|---|---|---|
-| ![Screenshot_20200226-210405](https://user-images.githubusercontent.com/8948226/80315130-55d9c700-87fe-11ea-8350-2c8452906eb7.png)  | ![Screenshot_20200226-210151](https://user-images.githubusercontent.com/8948226/80315135-612cf280-87fe-11ea-984c-aa18567d5bbc.png) | ![Screenshot_20200226-210223](https://user-images.githubusercontent.com/8948226/80315146-6be78780-87fe-11ea-8439-ca1ca578172b.png) |
+| ![Screenshot_20200226-210337](https://github.com/nv95/Kotatsu/raw/devel/metadata/en-US/images/phoneScreenshots/1.png) | ![](https://github.com/nv95/Kotatsu/raw/devel/metadata/en-US/images/phoneScreenshots/2.png)                           | ![Screenshot_20200226-210232](https://github.com/nv95/Kotatsu/raw/devel/metadata/en-US/images/phoneScreenshots/3.png) |
+|-----------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------|
+| ![Screenshot_20200226-210405](https://github.com/nv95/Kotatsu/raw/devel/metadata/en-US/images/phoneScreenshots/4.png) | ![Screenshot_20200226-210151](https://github.com/nv95/Kotatsu/raw/devel/metadata/en-US/images/phoneScreenshots/5.png) | ![Screenshot_20200226-210223](https://github.com/nv95/Kotatsu/raw/devel/metadata/en-US/images/phoneScreenshots/6.png) |
+
+| ![](https://github.com/nv95/Kotatsu/raw/devel/metadata/en-US/images/tenInchScreenshots/1.png) | ![](https://github.com/nv95/Kotatsu/raw/devel/metadata/en-US/images/tenInchScreenshots/2.png) |
+|-----------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------|
+
+### Localization
+
+<a href="https://hosted.weblate.org/engage/kotatsu/">
+<img src="https://hosted.weblate.org/widgets/kotatsu/-/287x66-white.png" alt="Translation status" />
+</a>
+
+Kotatsu is localized in a number of different languages, if you would like to help improve these or add new languages, please head over to the Weblate <a href="https://hosted.weblate.org/engage/kotatsu/">project page</a> 
 
 ### License
 [![GNU GPLv3 Image](https://www.gnu.org/graphics/gplv3-127x51.png)](http://www.gnu.org/licenses/gpl-3.0.en.html)  

app/build.gradle

@@ -1,22 +1,23 @@
 plugins {
 	id 'com.android.application'
 	id 'kotlin-android'
-	id 'kotlin-android-extensions'
 	id 'kotlin-kapt'
+	id 'kotlin-parcelize'
 }
 
-def gitCommits = 'git rev-list --count HEAD'.execute([], rootDir).text.trim().toInteger()
-
 android {
-	compileSdkVersion 29
-	buildToolsVersion '29.0.3'
+	compileSdkVersion 32
+	buildToolsVersion '32.0.0'
+	namespace 'org.koitharu.kotatsu'
 
 	defaultConfig {
 		applicationId 'org.koitharu.kotatsu'
 		minSdkVersion 21
-		targetSdkVersion 29
-		versionCode gitCommits
-		versionName '0.5'
+		targetSdkVersion 32
+		versionCode 406
+		versionName '3.2.2'
+		generatedDensities = []
+		testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 
 		kapt {
 			arguments {
@@ -24,14 +25,6 @@ android {
 			}
 		}
 	}
-	compileOptions {
-		sourceCompatibility JavaVersion.VERSION_1_8
-		targetCompatibility JavaVersion.VERSION_1_8
-	}
-	kotlinOptions {
-		jvmTarget = JavaVersion.VERSION_1_8.toString()
-		freeCompilerArgs += "-Xopt-in=kotlinx.coroutines.ExperimentalCoroutinesApi"
-	}
 	buildTypes {
 		debug {
 			applicationIdSuffix = '.debug'
@@ -43,61 +36,84 @@ android {
 			proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
 		}
 	}
-	lintOptions {
-		disable 'MissingTranslation'
+	buildFeatures {
+		viewBinding true
+	}
+	sourceSets {
+		androidTest.assets.srcDirs += files("$projectDir/schemas".toString())
+	}
+	compileOptions {
+		sourceCompatibility JavaVersion.VERSION_1_8
+		targetCompatibility JavaVersion.VERSION_1_8
+	}
+	kotlinOptions {
+		jvmTarget = JavaVersion.VERSION_1_8.toString()
+		freeCompilerArgs += [
+				'-opt-in=kotlinx.coroutines.ExperimentalCoroutinesApi',
+				'-opt-in=kotlinx.coroutines.FlowPreview',
+				'-opt-in=kotlin.contracts.ExperimentalContracts',
+		]
+	}
+	lint {
 		abortOnError false
+		disable 'MissingTranslation', 'PrivateResource'
 	}
 	testOptions {
 		unitTests.includeAndroidResources = true
-		unitTests.returnDefaultValues = true
+		unitTests.returnDefaultValues = false
 	}
 }
-androidExtensions {
-	experimental = true
-}
 dependencies {
 	implementation fileTree(dir: 'libs', include: ['*.jar', '*.aar'])
-	implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
-	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.7'
-	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.7'
+	implementation('com.github.nv95:kotatsu-parsers:b495e5e457') {
+		exclude group: 'org.json', module: 'json'
+	}
 
-	implementation 'androidx.core:core-ktx:1.5.0-alpha01'
-	implementation 'androidx.activity:activity-ktx:1.2.0-alpha06'
-	implementation 'androidx.fragment:fragment-ktx:1.3.0-alpha06'
-	implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.0-alpha05'
-	implementation 'androidx.constraintlayout:constraintlayout:2.0.0-beta8'
+	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.6.1'
+	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.6.1'
+
+	implementation 'androidx.core:core-ktx:1.7.0'
+	implementation 'androidx.activity:activity-ktx:1.4.0'
+	implementation 'androidx.fragment:fragment-ktx:1.4.1'
+	implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.4.1'
+	implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.4.1'
+	implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.4.1'
+	implementation 'androidx.lifecycle:lifecycle-service:2.4.1'
+	implementation 'androidx.lifecycle:lifecycle-process:2.4.1'
+	implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
 	implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0'
-	implementation 'androidx.recyclerview:recyclerview:1.2.0-alpha04'
-	implementation 'androidx.viewpager2:viewpager2:1.1.0-alpha01'
-	implementation 'androidx.preference:preference-ktx:1.1.1'
-	implementation 'androidx.work:work-runtime-ktx:2.4.0-rc01'
-	implementation 'com.google.android.material:material:1.3.0-alpha01'
+	implementation 'androidx.recyclerview:recyclerview:1.2.1'
+	implementation 'androidx.viewpager2:viewpager2:1.1.0-beta01'
+	implementation 'androidx.preference:preference-ktx:1.2.0'
+	implementation 'androidx.work:work-runtime-ktx:2.7.1'
+	implementation 'com.google.android.material:material:1.6.0'
 	//noinspection LifecycleAnnotationProcessorWithJava8
-	kapt 'androidx.lifecycle:lifecycle-compiler:2.3.0-alpha05'
+	kapt 'androidx.lifecycle:lifecycle-compiler:2.4.1'
 
-	implementation 'androidx.room:room-runtime:2.2.5'
-	implementation 'androidx.room:room-ktx:2.2.5'
-	kapt 'androidx.room:room-compiler:2.2.5'
+	implementation 'androidx.room:room-runtime:2.4.2'
+	implementation 'androidx.room:room-ktx:2.4.2'
+	kapt 'androidx.room:room-compiler:2.4.2'
 
-	implementation 'com.github.moxy-community:moxy:2.1.2'
-	implementation 'com.github.moxy-community:moxy-androidx:2.1.2'
-	implementation 'com.github.moxy-community:moxy-material:2.1.2'
-	implementation 'com.github.moxy-community:moxy-ktx:2.1.2'
-	kapt 'com.github.moxy-community:moxy-compiler:2.1.2'
+	implementation 'com.squareup.okhttp3:okhttp:4.9.3'
+	implementation 'com.squareup.okio:okio:3.0.0'
 
-	implementation 'com.squareup.okhttp3:okhttp:4.8.0'
-	implementation 'com.squareup.okio:okio:2.7.0'
-	implementation 'org.jsoup:jsoup:1.13.1'
+	implementation 'com.hannesdorfmann:adapterdelegates4-kotlin-dsl:4.3.2'
+	implementation 'com.hannesdorfmann:adapterdelegates4-kotlin-dsl-viewbinding:4.3.2'
 
-	implementation 'org.koin:koin-android:2.1.5'
-	implementation 'io.coil-kt:coil:0.11.0'
-	implementation 'com.davemorrissey.labs:subsampling-scale-image-view:3.10.0'
-	implementation 'com.tomclaw.cache:cache:1.0'
+	implementation 'io.insert-koin:koin-android:3.1.6'
+	implementation 'io.coil-kt:coil-base:1.4.0'
+	implementation 'com.davemorrissey.labs:subsampling-scale-image-view-androidx:3.10.0'
+	implementation 'com.github.solkin:disk-lru-cache:1.4'
 
-	debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.3'
-	debugImplementation 'com.github.ChuckerTeam.Chucker:library:3.2.0'
-	releaseImplementation 'com.github.ChuckerTeam.Chucker:library-no-op:3.2.0'
+	debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.9.1'
 
-	testImplementation 'junit:junit:4.13'
-	testImplementation 'org.json:json:20200518'
+	testImplementation 'junit:junit:4.13.2'
+	testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.1'
+	testImplementation 'io.insert-koin:koin-test-junit4:3.1.5'
+
+	androidTestImplementation 'androidx.test:runner:1.4.0'
+	androidTestImplementation 'androidx.test:rules:1.4.0'
+	androidTestImplementation 'androidx.test:core-ktx:1.4.0'
+	androidTestImplementation 'androidx.test.ext:junit-ktx:1.1.3'
+	androidTestImplementation 'androidx.room:room-testing:2.4.2'
 }

app/proguard-rules.pro

@@ -1,3 +1,4 @@
+-optimizationpasses 8
 -dontobfuscate
 -assumenosideeffects class kotlin.jvm.internal.Intrinsics {
 	public static void checkExpressionValueIsNotNull(...);
@@ -5,9 +6,8 @@
 	public static void checkReturnedValueIsNotNull(...);
 	public static void checkFieldIsNotNull(...);
 	public static void checkParameterIsNotNull(...);
+	public static void checkNotNullParameter(...);
 }
+-keep public class ** extends org.koitharu.kotatsu.base.ui.BaseFragment
 -keep class org.koitharu.kotatsu.core.db.entity.* { *; }
--keepclassmembers public class * extends org.koitharu.kotatsu.core.parser.MangaRepository {
-	public <init>(...);
-}
 -dontwarn okhttp3.internal.platform.ConscryptPlatform

app/src/androidTest/java/org/koitharu/kotatsu/core/db/MangaDatabaseTest.kt

@@ -0,0 +1,55 @@
+package org.koitharu.kotatsu.core.db
+
+import androidx.room.testing.MigrationTestHelper
+import androidx.sqlite.db.framework.FrameworkSQLiteOpenHelperFactory
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.platform.app.InstrumentationRegistry
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.koitharu.kotatsu.core.db.migrations.*
+import java.io.IOException
+
+@RunWith(AndroidJUnit4::class)
+class MangaDatabaseTest {
+
+	@get:Rule
+	val helper: MigrationTestHelper = MigrationTestHelper(
+		InstrumentationRegistry.getInstrumentation(),
+		MangaDatabase::class.java.canonicalName,
+		FrameworkSQLiteOpenHelperFactory()
+	)
+
+	@Test
+	@Throws(IOException::class)
+	fun migrateAll() {
+		helper.createDatabase(TEST_DB, 1).apply {
+			// TODO execSQL("")
+			close()
+		}
+		for (migration in migrations) {
+			helper.runMigrationsAndValidate(
+				TEST_DB,
+				migration.endVersion,
+				true,
+				migration
+			)
+		}
+	}
+
+
+	private companion object {
+
+		const val TEST_DB = "test-db"
+
+		val migrations = arrayOf(
+			Migration1To2(),
+			Migration2To3(),
+			Migration3To4(),
+			Migration4To5(),
+			Migration5To6(),
+			Migration6To7(),
+			Migration7To8(),
+		)
+	}
+}

app/src/debug/java/org/koitharu/kotatsu/core/parser/DummyParser.kt

@@ -0,0 +1,40 @@
+package org.koitharu.kotatsu.core.parser
+
+import java.util.*
+import org.koitharu.kotatsu.parsers.MangaLoaderContext
+import org.koitharu.kotatsu.parsers.MangaParser
+import org.koitharu.kotatsu.parsers.config.ConfigKey
+import org.koitharu.kotatsu.parsers.model.*
+
+/**
+ * This parser is just for parser development, it should not be used in releases
+ */
+class DummyParser(override val context: MangaLoaderContext) : MangaParser(MangaSource.DUMMY) {
+
+	override val configKeyDomain: ConfigKey.Domain
+		get() = ConfigKey.Domain("", null)
+
+	override val sortOrders: Set<SortOrder>
+		get() = EnumSet.allOf(SortOrder::class.java)
+
+	override suspend fun getDetails(manga: Manga): Manga {
+		TODO("Not yet implemented")
+	}
+
+	override suspend fun getList(
+		offset: Int,
+		query: String?,
+		tags: Set<MangaTag>?,
+		sortOrder: SortOrder?
+	): List<Manga> {
+		TODO("Not yet implemented")
+	}
+
+	override suspend fun getPages(chapter: MangaChapter): List<MangaPage> {
+		TODO("Not yet implemented")
+	}
+
+	override suspend fun getTags(): Set<MangaTag> {
+		TODO("Not yet implemented")
+	}
+}

app/src/debug/java/org/koitharu/kotatsu/core/parser/MangaParser.kt

@@ -0,0 +1,14 @@
+package org.koitharu.kotatsu.core.parser
+
+import org.koitharu.kotatsu.parsers.MangaLoaderContext
+import org.koitharu.kotatsu.parsers.MangaParser
+import org.koitharu.kotatsu.parsers.model.MangaSource
+import org.koitharu.kotatsu.parsers.newParser
+
+fun MangaParser(source: MangaSource, loaderContext: MangaLoaderContext): MangaParser {
+	return if (source == MangaSource.DUMMY) {
+		DummyParser(loaderContext)
+	} else {
+		source.newParser(loaderContext)
+	}
+}

app/src/debug/res/drawable/ic_launcher_foreground.xml

@@ -1,17 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="108dp"
-    android:height="108dp"
-    android:viewportWidth="108"
-    android:viewportHeight="108"
-    android:tint="#E6000A">
-  <group android:scaleX="0.40188664"
-      android:scaleY="0.40188664"
-      android:translateX="32.90095"
-      android:translateY="18.7272">
-    <group android:translateY="139.39206">
-      <path android:pathData="M83.796875,-0L105.6875,-0L60.765625,-55.828125L103.09375,-101L82.078125,-101L32.25,-49.1875L32.25,-101L13.53125,-101L13.53125,-0L32.25,-0L32.25,-25.8125L48.234375,-42.265625L83.796875,-0Z"
-          android:fillColor="#E6000A"/>
-    </group>
-  </group>
-</vector>

app/src/debug/res/menu/opt_settings.xml

@@ -4,9 +4,8 @@
 	xmlns:app="http://schemas.android.com/apk/res-auto">
 
 	<item
-		android:id="@+id/action_list_mode"
-		android:orderInCategory="20"
-		android:title="@string/list_mode"
+		android:id="@id/action_leaks"
+		android:title="@string/leak_canary_display_activity_label"
 		app:showAsAction="never" />
 
 </menu>

app/src/debug/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@color/ic_launcher_background"/>
-    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
-</adaptive-icon>

app/src/debug/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@color/ic_launcher_background"/>
-    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
-</adaptive-icon>

app/src/debug/res/values/bools.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources xmlns:tools="http://schemas.android.com/tools">
+	<bool name="leak_canary_add_launcher_icon" tools:node="replace">false</bool>
+</resources>

app/src/debug/res/values/ic_launcher_background.xml

@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <color name="ic_launcher_background">#FFFFFF</color>
-</resources>

app/src/debug/res/values/strings.xml

@@ -0,0 +1,3 @@
+<resources>
+	<string name="app_name" translatable="false">Kotatsu Dev</string>
+</resources>

app/src/main/AndroidManifest.xml

@@ -1,90 +1,117 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest
 	xmlns:android="http://schemas.android.com/apk/res/android"
-	xmlns:tools="http://schemas.android.com/tools"
-	package="org.koitharu.kotatsu">
+	xmlns:tools="http://schemas.android.com/tools">
 
 	<uses-permission android:name="android.permission.INTERNET" />
 	<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 	<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
 	<uses-permission android:name="android.permission.WAKE_LOCK" />
 	<uses-permission android:name="android.permission.VIBRATE" />
-	<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
 	<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
 
 	<application
 		android:name="org.koitharu.kotatsu.KotatsuApp"
 		android:allowBackup="true"
-		android:fullBackupContent="@xml/backup_descriptor"
+		android:backupAgent="org.koitharu.kotatsu.settings.backup.AppBackupAgent"
+		android:dataExtractionRules="@xml/backup_rules"
+		android:fullBackupContent="@xml/backup_content"
+		android:fullBackupOnly="true"
 		android:icon="@mipmap/ic_launcher"
 		android:label="@string/app_name"
+		android:networkSecurityConfig="@xml/network_security_config"
 		android:roundIcon="@mipmap/ic_launcher_round"
 		android:supportsRtl="true"
-		android:theme="@style/AppTheme"
-		android:usesCleartextTraffic="true"
+		android:theme="@style/Theme.Kotatsu"
 		tools:ignore="UnusedAttribute">
-		<activity android:name=".ui.list.MainActivity">
+
+		<activity
+			android:name="org.koitharu.kotatsu.main.ui.MainActivity"
+			android:exported="true">
 			<intent-filter>
 				<action android:name="android.intent.action.MAIN" />
 				<category android:name="android.intent.category.LAUNCHER" />
 			</intent-filter>
 			<meta-data
 				android:name="android.app.default_searchable"
-				android:value=".ui.search.SearchActivity" />
+				android:value="org.koitharu.kotatsu.ui.search.SearchActivity" />
 		</activity>
-		<activity android:name=".ui.details.MangaDetailsActivity">
+		<activity
+			android:name="org.koitharu.kotatsu.details.ui.DetailsActivity"
+			android:exported="true">
 			<intent-filter>
 				<action android:name="${applicationId}.action.VIEW_MANGA" />
 			</intent-filter>
 		</activity>
-		<activity android:name=".ui.reader.ReaderActivity" />
 		<activity
-			android:name=".ui.search.SearchActivity"
-			android:label="@string/search" />
-		<activity
-			android:name=".ui.settings.SettingsActivity"
-			android:label="@string/settings" />
-		<activity
-			android:name=".ui.reader.SimpleSettingsActivity"
-			android:label="@string/settings">
+			android:name="org.koitharu.kotatsu.reader.ui.ReaderActivity"
+			android:exported="true">
 			<intent-filter>
-				<action android:name="android.intent.action.MANAGE_NETWORK_USAGE" />
-				<category android:name="android.intent.category.DEFAULT" />
+				<action android:name="${applicationId}.action.READ_MANGA" />
 			</intent-filter>
 		</activity>
-		<activity android:name=".ui.browser.BrowserActivity" />
 		<activity
-			android:name=".ui.utils.CrashActivity"
+			android:name="org.koitharu.kotatsu.search.ui.SearchActivity"
+			android:label="@string/search" />
+		<activity android:name="org.koitharu.kotatsu.search.ui.MangaListActivity"
+			android:label="@string/search_manga" />
+		<activity
+			android:name="org.koitharu.kotatsu.settings.SettingsActivity"
+			android:label="@string/settings" />
+		<activity
+			android:name="org.koitharu.kotatsu.browser.BrowserActivity"
+			android:configChanges="orientation|screenSize|screenLayout|keyboardHidden"
+			android:windowSoftInputMode="adjustResize" />
+		<activity
+			android:name="org.koitharu.kotatsu.settings.sources.auth.SourceAuthActivity"
+			android:configChanges="orientation|screenSize|screenLayout|keyboardHidden"
+			android:windowSoftInputMode="adjustResize" />
+		<activity
+			android:name="org.koitharu.kotatsu.core.ui.CrashActivity"
 			android:label="@string/error_occurred"
-			android:theme="@android:style/Theme.DeviceDefault.Dialog"
+			android:theme="@android:style/Theme.DeviceDefault"
 			android:windowSoftInputMode="stateAlwaysHidden" />
 		<activity
-			android:name="org.koitharu.kotatsu.ui.list.favourites.categories.CategoriesActivity"
+			android:name="org.koitharu.kotatsu.favourites.ui.categories.CategoriesActivity"
 			android:label="@string/favourites_categories"
 			android:windowSoftInputMode="stateAlwaysHidden" />
 		<activity
-			android:name=".ui.widget.shelf.ShelfConfigActivity"
+			android:name="org.koitharu.kotatsu.widget.shelf.ShelfConfigActivity"
+			android:exported="true"
 			android:label="@string/manga_shelf">
 			<intent-filter>
 				<action android:name="android.appwidget.action.APPWIDGET_CONFIGURE" />
 			</intent-filter>
 		</activity>
-		<activity android:name=".ui.search.global.GlobalSearchActivity"
+		<activity
+			android:name="org.koitharu.kotatsu.search.ui.global.GlobalSearchActivity"
 			android:label="@string/search" />
+		<activity
+			android:name="org.koitharu.kotatsu.main.ui.protect.ProtectActivity"
+			android:noHistory="true"
+			android:windowSoftInputMode="adjustResize" />
+		<activity
+			android:name="org.koitharu.kotatsu.settings.protect.ProtectSetupActivity"
+			android:windowSoftInputMode="adjustResize" />
+		<activity
+			android:name="org.koitharu.kotatsu.download.ui.DownloadsActivity"
+			android:launchMode="singleTop"
+			android:label="@string/downloads" />
+		<activity android:name="org.koitharu.kotatsu.image.ui.ImageActivity"/>
 
 		<service
-			android:name=".ui.download.DownloadService"
+			android:name="org.koitharu.kotatsu.download.ui.service.DownloadService"
 			android:foregroundServiceType="dataSync" />
-		<service android:name=".ui.settings.AppUpdateService" />
+		<service android:name="org.koitharu.kotatsu.local.ui.LocalChaptersRemoveService" />
 		<service
-			android:name=".ui.widget.shelf.ShelfWidgetService"
+			android:name="org.koitharu.kotatsu.widget.shelf.ShelfWidgetService"
 			android:permission="android.permission.BIND_REMOTEVIEWS" />
 		<service
-			android:name=".ui.widget.recent.RecentWidgetService"
+			android:name="org.koitharu.kotatsu.widget.recent.RecentWidgetService"
 			android:permission="android.permission.BIND_REMOTEVIEWS" />
 
 		<provider
-			android:name=".ui.search.MangaSuggestionsProvider"
+			android:name="org.koitharu.kotatsu.search.ui.MangaSuggestionsProvider"
 			android:authorities="${applicationId}.MangaSuggestionsProvider"
 			android:exported="false" />
 		<provider
@@ -98,7 +125,8 @@
 		</provider>
 
 		<receiver
-			android:name=".ui.widget.shelf.ShelfWidgetProvider"
+			android:name="org.koitharu.kotatsu.widget.shelf.ShelfWidgetProvider"
+			android:exported="true"
 			android:label="@string/manga_shelf">
 			<intent-filter>
 				<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
@@ -108,7 +136,8 @@
 				android:resource="@xml/widget_shelf" />
 		</receiver>
 		<receiver
-			android:name=".ui.widget.recent.RecentWidgetProvider"
+			android:name="org.koitharu.kotatsu.widget.recent.RecentWidgetProvider"
+			android:exported="true"
 			android:label="@string/recent_manga">
 			<intent-filter>
 				<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
@@ -118,6 +147,13 @@
 				android:resource="@xml/widget_recent" />
 		</receiver>
 
+		<meta-data
+			android:name="android.webkit.WebView.EnableSafeBrowsing"
+			android:value="false" />
+		<meta-data
+			android:name="android.webkit.WebView.MetricsOptOut"
+			android:value="true" />
+
 	</application>
 
 </manifest>

app/src/main/java/org/koitharu/kotatsu/KotatsuApp.kt

@@ -3,141 +3,97 @@ package org.koitharu.kotatsu
 import android.app.Application
 import android.os.StrictMode
 import androidx.appcompat.app.AppCompatDelegate
-import androidx.room.Room
-import coil.Coil
-import coil.ComponentRegistry
-import coil.ImageLoaderBuilder
-import coil.util.CoilUtils
-import com.chuckerteam.chucker.api.ChuckerCollector
-import com.chuckerteam.chucker.api.ChuckerInterceptor
-import okhttp3.OkHttpClient
+import androidx.fragment.app.strictmode.FragmentStrictMode
+import org.koin.android.ext.android.get
 import org.koin.android.ext.koin.androidContext
-import org.koin.android.ext.koin.androidLogger
 import org.koin.core.context.startKoin
-import org.koin.dsl.module
-import org.koitharu.kotatsu.core.db.DatabasePrePopulateCallback
-import org.koitharu.kotatsu.core.db.MangaDatabase
-import org.koitharu.kotatsu.core.db.migrations.*
-import org.koitharu.kotatsu.core.local.CbzFetcher
-import org.koitharu.kotatsu.core.local.PagesCache
-import org.koitharu.kotatsu.core.local.cookies.PersistentCookieJar
-import org.koitharu.kotatsu.core.local.cookies.cache.SetCookieCache
-import org.koitharu.kotatsu.core.local.cookies.persistence.SharedPrefsCookiePersistor
-import org.koitharu.kotatsu.core.parser.LocalMangaRepository
-import org.koitharu.kotatsu.core.parser.UserAgentInterceptor
+import org.koitharu.kotatsu.core.db.databaseModule
+import org.koitharu.kotatsu.core.github.githubModule
+import org.koitharu.kotatsu.core.network.networkModule
 import org.koitharu.kotatsu.core.prefs.AppSettings
-import org.koitharu.kotatsu.domain.MangaLoaderContext
-import org.koitharu.kotatsu.domain.favourites.FavouritesRepository
-import org.koitharu.kotatsu.domain.history.HistoryRepository
-import org.koitharu.kotatsu.ui.utils.AppCrashHandler
-import org.koitharu.kotatsu.ui.widget.WidgetUpdater
-import org.koitharu.kotatsu.utils.CacheUtils
-import java.util.concurrent.TimeUnit
+import org.koitharu.kotatsu.core.ui.AppCrashHandler
+import org.koitharu.kotatsu.core.ui.uiModule
+import org.koitharu.kotatsu.details.detailsModule
+import org.koitharu.kotatsu.favourites.favouritesModule
+import org.koitharu.kotatsu.history.historyModule
+import org.koitharu.kotatsu.local.data.PagesCache
+import org.koitharu.kotatsu.local.domain.LocalMangaRepository
+import org.koitharu.kotatsu.local.localModule
+import org.koitharu.kotatsu.main.mainModule
+import org.koitharu.kotatsu.main.ui.protect.AppProtectHelper
+import org.koitharu.kotatsu.parsers.MangaLoaderContext
+import org.koitharu.kotatsu.reader.readerModule
+import org.koitharu.kotatsu.remotelist.remoteListModule
+import org.koitharu.kotatsu.search.searchModule
+import org.koitharu.kotatsu.settings.settingsModule
+import org.koitharu.kotatsu.suggestions.suggestionsModule
+import org.koitharu.kotatsu.tracker.trackerModule
+import org.koitharu.kotatsu.widget.WidgetUpdater
+import org.koitharu.kotatsu.widget.appWidgetModule
 
 class KotatsuApp : Application() {
 
-	private val cookieJar by lazy {
-		PersistentCookieJar(SetCookieCache(), SharedPrefsCookiePersistor(applicationContext))
-	}
-
-	private val chuckerCollector by lazy(LazyThreadSafetyMode.NONE) {
-		ChuckerCollector(applicationContext)
-	}
-
 	override fun onCreate() {
 		super.onCreate()
 		if (BuildConfig.DEBUG) {
-			StrictMode.setThreadPolicy(StrictMode.ThreadPolicy.Builder()
+			enableStrictMode()
+		}
+		initKoin()
+		Thread.setDefaultUncaughtExceptionHandler(AppCrashHandler(applicationContext))
+		AppCompatDelegate.setDefaultNightMode(get<AppSettings>().theme)
+		registerActivityLifecycleCallbacks(get<AppProtectHelper>())
+		val widgetUpdater = WidgetUpdater(applicationContext)
+		widgetUpdater.subscribeToFavourites(get())
+		widgetUpdater.subscribeToHistory(get())
+	}
+
+	private fun initKoin() {
+		startKoin {
+			androidContext(this@KotatsuApp)
+			modules(
+				networkModule,
+				databaseModule,
+				githubModule,
+				uiModule,
+				mainModule,
+				searchModule,
+				localModule,
+				favouritesModule,
+				historyModule,
+				remoteListModule,
+				detailsModule,
+				trackerModule,
+				settingsModule,
+				readerModule,
+				appWidgetModule,
+				suggestionsModule,
+			)
+		}
+	}
+
+	private fun enableStrictMode() {
+		StrictMode.setThreadPolicy(
+			StrictMode.ThreadPolicy.Builder()
 				.detectAll()
 				.penaltyLog()
-				.build())
-			StrictMode.setVmPolicy(StrictMode.VmPolicy.Builder()
+				.build()
+		)
+		StrictMode.setVmPolicy(
+			StrictMode.VmPolicy.Builder()
 				.detectAll()
 				.setClassInstanceLimit(LocalMangaRepository::class.java, 1)
 				.setClassInstanceLimit(PagesCache::class.java, 1)
 				.setClassInstanceLimit(MangaLoaderContext::class.java, 1)
 				.penaltyLog()
-				.build())
-		}
-		initKoin()
-		initCoil()
-		Thread.setDefaultUncaughtExceptionHandler(AppCrashHandler(applicationContext))
-		if (BuildConfig.DEBUG) {
-			initErrorHandler()
-		}
-		AppCompatDelegate.setDefaultNightMode(AppSettings(this).theme)
-		val widgetUpdater = WidgetUpdater(applicationContext)
-		FavouritesRepository.subscribe(widgetUpdater)
-		HistoryRepository.subscribe(widgetUpdater)
-	}
-
-	private fun initKoin() {
-		startKoin {
-			androidLogger()
-			androidContext(applicationContext)
-			modules(
-				module {
-					factory {
-						okHttp()
-							.cache(CacheUtils.createHttpCache(applicationContext))
-							.build()
-					}
-					single {
-						mangaDb().build()
-					}
-					single {
-						MangaLoaderContext()
-					}
-					single {
-						AppSettings(applicationContext)
-					}
-					single {
-						PagesCache(applicationContext)
-					}
-				}
-			)
-		}
-	}
-
-	private fun initCoil() {
-		Coil.setImageLoader(
-			ImageLoaderBuilder(applicationContext)
-				.okHttpClient(
-					okHttp()
-						.cache(CoilUtils.createDefaultCache(applicationContext))
-						.build()
-				).componentRegistry(
-					ComponentRegistry.Builder()
-						.add(CbzFetcher())
-						.build()
-				)
 				.build()
 		)
+		FragmentStrictMode.defaultPolicy = FragmentStrictMode.Policy.Builder()
+			.penaltyDeath()
+			.detectFragmentReuse()
+			.detectWrongFragmentContainer()
+			.detectRetainInstanceUsage()
+			.detectSetUserVisibleHint()
+			.detectFragmentTagUsage()
+			.build()
 	}
-
-	private fun initErrorHandler() {
-		val exceptionHandler = Thread.getDefaultUncaughtExceptionHandler()
-		Thread.setDefaultUncaughtExceptionHandler { t, e ->
-			chuckerCollector.onError("CRASH", e)
-			exceptionHandler?.uncaughtException(t, e)
-		}
-	}
-
-	private fun okHttp() = OkHttpClient.Builder().apply {
-		connectTimeout(20, TimeUnit.SECONDS)
-		readTimeout(60, TimeUnit.SECONDS)
-		writeTimeout(20, TimeUnit.SECONDS)
-		cookieJar(cookieJar)
-		addInterceptor(UserAgentInterceptor)
-		if (BuildConfig.DEBUG) {
-			addInterceptor(ChuckerInterceptor(applicationContext, collector = chuckerCollector))
-		}
-	}
-
-	private fun mangaDb() = Room.databaseBuilder(
-		applicationContext,
-		MangaDatabase::class.java,
-		"kotatsu-db"
-	).addMigrations(Migration1To2, Migration2To3, Migration3To4, Migration4To5, Migration5To6)
-		.addCallback(DatabasePrePopulateCallback(resources))
 }

app/src/main/java/org/koitharu/kotatsu/base/domain/MangaDataRepository.kt

@@ -0,0 +1,52 @@
+package org.koitharu.kotatsu.base.domain
+
+import androidx.room.withTransaction
+import org.koitharu.kotatsu.core.db.MangaDatabase
+import org.koitharu.kotatsu.core.db.entity.*
+import org.koitharu.kotatsu.core.prefs.ReaderMode
+import org.koitharu.kotatsu.parsers.model.Manga
+import org.koitharu.kotatsu.parsers.model.MangaSource
+import org.koitharu.kotatsu.parsers.model.MangaTag
+
+class MangaDataRepository(private val db: MangaDatabase) {
+
+	suspend fun savePreferences(manga: Manga, mode: ReaderMode) {
+		val tags = manga.tags.toEntities()
+		db.withTransaction {
+			db.tagsDao.upsert(tags)
+			db.mangaDao.upsert(manga.toEntity(), tags)
+			db.preferencesDao.upsert(
+				MangaPrefsEntity(
+					mangaId = manga.id,
+					mode = mode.id
+				)
+			)
+		}
+	}
+
+	suspend fun getReaderMode(mangaId: Long): ReaderMode? {
+		return db.preferencesDao.find(mangaId)?.let { ReaderMode.valueOf(it.mode) }
+	}
+
+	suspend fun findMangaById(mangaId: Long): Manga? {
+		return db.mangaDao.find(mangaId)?.toManga()
+	}
+
+	suspend fun resolveIntent(intent: MangaIntent): Manga? = when {
+		intent.manga != null -> intent.manga
+		intent.mangaId != 0L -> findMangaById(intent.mangaId)
+		else -> null // TODO resolve uri
+	}
+
+	suspend fun storeManga(manga: Manga) {
+		val tags = manga.tags.toEntities()
+		db.withTransaction {
+			db.tagsDao.upsert(tags)
+			db.mangaDao.upsert(manga.toEntity(), tags)
+		}
+	}
+
+	suspend fun findTags(source: MangaSource): Set<MangaTag> {
+		return db.tagsDao.findTags(source.name).toMangaTags()
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/domain/MangaIntent.kt

@@ -0,0 +1,34 @@
+package org.koitharu.kotatsu.base.domain
+
+import android.content.Intent
+import android.net.Uri
+import android.os.Bundle
+import org.koitharu.kotatsu.core.model.parcelable.ParcelableManga
+import org.koitharu.kotatsu.parsers.model.Manga
+
+class MangaIntent private constructor(
+	val manga: Manga?,
+	val mangaId: Long,
+	val uri: Uri?,
+) {
+
+	constructor(intent: Intent?) : this(
+		manga = intent?.getParcelableExtra<ParcelableManga>(KEY_MANGA)?.manga,
+		mangaId = intent?.getLongExtra(KEY_ID, ID_NONE) ?: ID_NONE,
+		uri = intent?.data
+	)
+
+	constructor(args: Bundle?) : this(
+		manga = args?.getParcelable<ParcelableManga>(KEY_MANGA)?.manga,
+		mangaId = args?.getLong(KEY_ID, ID_NONE) ?: ID_NONE,
+		uri = null
+	)
+
+	companion object {
+
+		const val ID_NONE = 0L
+
+		const val KEY_MANGA = "manga"
+		const val KEY_ID = "id"
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/domain/MangaUtils.kt

@@ -0,0 +1,81 @@
+package org.koitharu.kotatsu.base.domain
+
+import android.graphics.BitmapFactory
+import android.net.Uri
+import android.util.Size
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.runInterruptible
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import org.koin.core.component.KoinComponent
+import org.koin.core.component.get
+import org.koitharu.kotatsu.BuildConfig
+import org.koitharu.kotatsu.core.network.CommonHeaders
+import org.koitharu.kotatsu.core.parser.MangaRepository
+import org.koitharu.kotatsu.parsers.model.MangaPage
+import org.koitharu.kotatsu.parsers.util.await
+import org.koitharu.kotatsu.parsers.util.medianOrNull
+import java.io.File
+import java.io.InputStream
+import java.util.zip.ZipFile
+
+object MangaUtils : KoinComponent {
+
+	/**
+	 * Automatic determine type of manga by page size
+	 * @return ReaderMode.WEBTOON if page is wide
+	 */
+	suspend fun determineMangaIsWebtoon(pages: List<MangaPage>): Boolean? {
+		try {
+			val page = pages.medianOrNull() ?: return null
+			val url = MangaRepository(page.source).getPageUrl(page)
+			val uri = Uri.parse(url)
+			val size = if (uri.scheme == "cbz") {
+				runInterruptible(Dispatchers.IO) {
+					val zip = ZipFile(uri.schemeSpecificPart)
+					val entry = zip.getEntry(uri.fragment)
+					zip.getInputStream(entry).use {
+						getBitmapSize(it)
+					}
+				}
+			} else {
+				val request = Request.Builder()
+					.url(url)
+					.get()
+					.header(CommonHeaders.REFERER, page.referer)
+					.cacheControl(CommonHeaders.CACHE_CONTROL_DISABLED)
+					.build()
+				get<OkHttpClient>().newCall(request).await().use {
+					runInterruptible(Dispatchers.IO) {
+						getBitmapSize(it.body?.byteStream())
+					}
+				}
+			}
+			return size.width * 2 < size.height
+		} catch (e: Exception) {
+			if (BuildConfig.DEBUG) {
+				e.printStackTrace()
+			}
+			return null
+		}
+	}
+
+	suspend fun getImageMimeType(file: File): String? = runInterruptible(Dispatchers.IO) {
+		val options = BitmapFactory.Options().apply {
+			inJustDecodeBounds = true
+		}
+		BitmapFactory.decodeFile(file.path, options)?.recycle()
+		options.outMimeType
+	}
+
+	private fun getBitmapSize(input: InputStream?): Size {
+		val options = BitmapFactory.Options().apply {
+			inJustDecodeBounds = true
+		}
+		BitmapFactory.decodeStream(input, null, options)?.recycle()
+		val imageHeight: Int = options.outHeight
+		val imageWidth: Int = options.outWidth
+		check(imageHeight > 0 && imageWidth > 0)
+		return Size(imageWidth, imageHeight)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/AlertDialogFragment.kt

@@ -0,0 +1,45 @@
+package org.koitharu.kotatsu.base.ui
+
+import android.app.Dialog
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.annotation.CallSuper
+import androidx.fragment.app.DialogFragment
+import androidx.viewbinding.ViewBinding
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+
+abstract class AlertDialogFragment<B : ViewBinding> : DialogFragment() {
+
+	private var viewBinding: B? = null
+
+	protected val binding: B
+		get() = checkNotNull(viewBinding)
+
+	final override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+		val binding = onInflateView(layoutInflater, null)
+		viewBinding = binding
+		return MaterialAlertDialogBuilder(requireContext(), theme)
+			.setView(binding.root)
+			.also(::onBuildDialog)
+			.create()
+	}
+
+	final override fun onCreateView(
+		inflater: LayoutInflater,
+		container: ViewGroup?,
+		savedInstanceState: Bundle?
+	) = viewBinding?.root
+
+	@CallSuper
+	override fun onDestroyView() {
+		viewBinding = null
+		super.onDestroyView()
+	}
+
+	open fun onBuildDialog(builder: MaterialAlertDialogBuilder) = Unit
+
+	protected fun bindingOrNull(): B? = viewBinding
+
+	protected abstract fun onInflateView(inflater: LayoutInflater, container: ViewGroup?): B
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/BaseActivity.kt

@@ -0,0 +1,127 @@
+package org.koitharu.kotatsu.base.ui
+
+import android.content.res.Configuration
+import android.os.Build
+import android.os.Bundle
+import android.view.KeyEvent
+import android.view.MenuItem
+import android.view.View
+import android.view.ViewGroup
+import androidx.annotation.CallSuper
+import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.view.ActionMode
+import androidx.appcompat.widget.ActionBarContextView
+import androidx.appcompat.widget.Toolbar
+import androidx.core.app.ActivityCompat
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowCompat
+import androidx.core.view.WindowInsetsCompat
+import androidx.core.view.updateLayoutParams
+import androidx.viewbinding.ViewBinding
+import org.koin.android.ext.android.get
+import org.koitharu.kotatsu.BuildConfig
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.base.ui.util.ActionModeDelegate
+import org.koitharu.kotatsu.base.ui.util.WindowInsetsDelegate
+import org.koitharu.kotatsu.core.exceptions.resolve.ExceptionResolver
+import org.koitharu.kotatsu.core.prefs.AppSettings
+
+abstract class BaseActivity<B : ViewBinding> :
+	AppCompatActivity(),
+	WindowInsetsDelegate.WindowInsetsListener {
+
+	protected lateinit var binding: B
+		private set
+
+	@Suppress("LeakingThis")
+	protected val exceptionResolver = ExceptionResolver(this)
+
+	@Suppress("LeakingThis")
+	protected val insetsDelegate = WindowInsetsDelegate(this)
+
+	val actionModeDelegate = ActionModeDelegate()
+
+	override fun onCreate(savedInstanceState: Bundle?) {
+		val settings = get<AppSettings>()
+		when {
+			settings.isAmoledTheme -> setTheme(R.style.ThemeOverlay_Kotatsu_AMOLED)
+			settings.isDynamicTheme -> setTheme(R.style.Theme_Kotatsu_Monet)
+		}
+		super.onCreate(savedInstanceState)
+		WindowCompat.setDecorFitsSystemWindows(window, false)
+		insetsDelegate.handleImeInsets = true
+	}
+
+	@Deprecated("Use ViewBinding", level = DeprecationLevel.ERROR)
+	override fun setContentView(layoutResID: Int) {
+		super.setContentView(layoutResID)
+		setupToolbar()
+	}
+
+	@Deprecated("Use ViewBinding", level = DeprecationLevel.ERROR)
+	override fun setContentView(view: View?) {
+		super.setContentView(view)
+		setupToolbar()
+	}
+
+	protected fun setContentView(binding: B) {
+		this.binding = binding
+		super.setContentView(binding.root)
+		val toolbar = (binding.root.findViewById<View>(R.id.toolbar) as? Toolbar)
+		toolbar?.let(this::setSupportActionBar)
+		insetsDelegate.onViewCreated(binding.root)
+	}
+
+	override fun onOptionsItemSelected(item: MenuItem) = if (item.itemId == android.R.id.home) {
+		onBackPressed()
+		true
+	} else super.onOptionsItemSelected(item)
+
+	override fun onKeyDown(keyCode: Int, event: KeyEvent?): Boolean {
+		if (BuildConfig.DEBUG && keyCode == KeyEvent.KEYCODE_VOLUME_UP) { // TODO remove
+			ActivityCompat.recreate(this)
+			return true
+		}
+		return super.onKeyDown(keyCode, event)
+	}
+
+	private fun setupToolbar() {
+		(findViewById<View>(R.id.toolbar) as? Toolbar)?.let(this::setSupportActionBar)
+	}
+
+	protected fun isDarkAmoledTheme(): Boolean {
+		val uiMode = resources.configuration.uiMode
+		val isNight = uiMode and Configuration.UI_MODE_NIGHT_MASK == Configuration.UI_MODE_NIGHT_YES
+		return isNight && get<AppSettings>().isAmoledTheme
+	}
+
+	@CallSuper
+	override fun onSupportActionModeStarted(mode: ActionMode) {
+		super.onSupportActionModeStarted(mode)
+		actionModeDelegate.onSupportActionModeStarted(mode)
+		val insets = ViewCompat.getRootWindowInsets(binding.root)
+			?.getInsets(WindowInsetsCompat.Type.systemBars()) ?: return
+		val view = findViewById<ActionBarContextView?>(androidx.appcompat.R.id.action_mode_bar)
+		view?.updateLayoutParams<ViewGroup.MarginLayoutParams> {
+			topMargin = insets.top
+		}
+	}
+
+	@CallSuper
+	override fun onSupportActionModeFinished(mode: ActionMode) {
+		super.onSupportActionModeFinished(mode)
+		actionModeDelegate.onSupportActionModeFinished(mode)
+	}
+
+	override fun onBackPressed() {
+		if ( // https://issuetracker.google.com/issues/139738913
+			Build.VERSION.SDK_INT == Build.VERSION_CODES.Q &&
+			isTaskRoot &&
+			supportFragmentManager.backStackEntryCount == 0
+		) {
+			finishAfterTransition()
+		} else {
+			super.onBackPressed()
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/BaseBottomSheet.kt

@@ -0,0 +1,66 @@
+package org.koitharu.kotatsu.base.ui
+
+import android.app.Dialog
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.view.ViewGroup.LayoutParams
+import androidx.appcompat.app.AppCompatDialog
+import androidx.core.view.updateLayoutParams
+import androidx.viewbinding.ViewBinding
+import com.google.android.material.bottomsheet.BottomSheetBehavior
+import com.google.android.material.bottomsheet.BottomSheetDialog
+import com.google.android.material.bottomsheet.BottomSheetDialogFragment
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.base.ui.dialog.AppBottomSheetDialog
+import com.google.android.material.R as materialR
+
+abstract class BaseBottomSheet<B : ViewBinding> : BottomSheetDialogFragment() {
+
+	private var viewBinding: B? = null
+
+	protected val binding: B
+		get() = checkNotNull(viewBinding)
+
+	protected val behavior: BottomSheetBehavior<*>?
+		get() = (dialog as? BottomSheetDialog)?.behavior
+
+	final override fun onCreateView(
+		inflater: LayoutInflater,
+		container: ViewGroup?,
+		savedInstanceState: Bundle?
+	): View {
+		val binding = onInflateView(inflater, container)
+		viewBinding = binding
+		return binding.root
+	}
+
+	override fun onDestroyView() {
+		viewBinding = null
+		super.onDestroyView()
+	}
+
+	override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+		return if (resources.getBoolean(R.bool.is_tablet)) {
+			AppCompatDialog(context, R.style.Theme_Kotatsu_Dialog)
+		} else {
+			AppBottomSheetDialog(requireContext(), theme)
+		}
+	}
+
+	protected abstract fun onInflateView(inflater: LayoutInflater, container: ViewGroup?): B
+
+	protected fun setExpanded(isExpanded: Boolean, isLocked: Boolean) {
+		val b = behavior ?: return
+		if (isExpanded) {
+			b.state = BottomSheetBehavior.STATE_EXPANDED
+		}
+		b.isFitToContents = !isExpanded
+		val rootView = dialog?.findViewById<View>(materialR.id.design_bottom_sheet)
+		rootView?.updateLayoutParams {
+			height = if (isExpanded) LayoutParams.MATCH_PARENT else LayoutParams.WRAP_CONTENT
+		}
+		b.isDraggable = !isLocked
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/BaseFragment.kt

@@ -0,0 +1,55 @@
+package org.koitharu.kotatsu.base.ui
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import androidx.viewbinding.ViewBinding
+import org.koitharu.kotatsu.base.ui.util.ActionModeDelegate
+import org.koitharu.kotatsu.base.ui.util.WindowInsetsDelegate
+import org.koitharu.kotatsu.core.exceptions.resolve.ExceptionResolver
+
+abstract class BaseFragment<B : ViewBinding> :
+	Fragment(),
+	WindowInsetsDelegate.WindowInsetsListener {
+
+	private var viewBinding: B? = null
+
+	protected val binding: B
+		get() = checkNotNull(viewBinding)
+
+	@Suppress("LeakingThis")
+	protected val exceptionResolver = ExceptionResolver(this)
+
+	@Suppress("LeakingThis")
+	protected val insetsDelegate = WindowInsetsDelegate(this)
+
+	protected val actionModeDelegate: ActionModeDelegate
+		get() = (requireActivity() as BaseActivity<*>).actionModeDelegate
+
+	override fun onCreateView(
+		inflater: LayoutInflater,
+		container: ViewGroup?,
+		savedInstanceState: Bundle?
+	): View? {
+		val binding = onInflateView(inflater, container)
+		viewBinding = binding
+		return binding.root
+	}
+
+	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+		super.onViewCreated(view, savedInstanceState)
+		insetsDelegate.onViewCreated(view)
+	}
+
+	override fun onDestroyView() {
+		viewBinding = null
+		insetsDelegate.onDestroyView()
+		super.onDestroyView()
+	}
+
+	protected fun bindingOrNull() = viewBinding
+
+	protected abstract fun onInflateView(inflater: LayoutInflater, container: ViewGroup?): B
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/BaseFullscreenActivity.kt

@@ -0,0 +1,53 @@
+package org.koitharu.kotatsu.base.ui
+
+import android.graphics.Color
+import android.os.Build
+import android.os.Bundle
+import android.view.View
+import android.view.WindowManager
+import androidx.viewbinding.ViewBinding
+
+private const val SYSTEM_UI_FLAGS_SHOWN = View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
+	View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION or
+	View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
+
+private const val SYSTEM_UI_FLAGS_HIDDEN = View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
+	View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION or
+	View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN or
+	View.SYSTEM_UI_FLAG_HIDE_NAVIGATION or
+	View.SYSTEM_UI_FLAG_FULLSCREEN or
+	View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
+
+abstract class BaseFullscreenActivity<B : ViewBinding> : BaseActivity<B>(),
+	View.OnSystemUiVisibilityChangeListener {
+
+	override fun onCreate(savedInstanceState: Bundle?) {
+		super.onCreate(savedInstanceState)
+		with(window) {
+			statusBarColor = Color.TRANSPARENT
+			navigationBarColor = Color.TRANSPARENT
+			if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
+				attributes.layoutInDisplayCutoutMode =
+					WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES
+			}
+			decorView.setOnSystemUiVisibilityChangeListener(this@BaseFullscreenActivity)
+		}
+		showSystemUI()
+	}
+
+	@Deprecated("Deprecated in Java")
+	final override fun onSystemUiVisibilityChange(visibility: Int) {
+		onSystemUiVisibilityChanged(visibility and View.SYSTEM_UI_FLAG_FULLSCREEN == 0)
+	}
+
+	// TODO WindowInsetsControllerCompat works incorrect
+	protected fun hideSystemUI() {
+		window.decorView.systemUiVisibility = SYSTEM_UI_FLAGS_HIDDEN
+	}
+
+	protected fun showSystemUI() {
+		window.decorView.systemUiVisibility = SYSTEM_UI_FLAGS_SHOWN
+	}
+
+	protected open fun onSystemUiVisibilityChanged(isVisible: Boolean) = Unit
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/BasePreferenceFragment.kt

@@ -0,0 +1,62 @@
+package org.koitharu.kotatsu.base.ui
+
+import android.os.Bundle
+import android.view.View
+import androidx.annotation.CallSuper
+import androidx.annotation.StringRes
+import androidx.core.graphics.Insets
+import androidx.core.view.updatePadding
+import androidx.fragment.app.Fragment
+import androidx.preference.PreferenceFragmentCompat
+import androidx.recyclerview.widget.RecyclerView
+import org.koin.android.ext.android.inject
+import org.koitharu.kotatsu.base.ui.util.RecyclerViewOwner
+import org.koitharu.kotatsu.base.ui.util.WindowInsetsDelegate
+import org.koitharu.kotatsu.core.prefs.AppSettings
+import org.koitharu.kotatsu.settings.SettingsActivity
+import org.koitharu.kotatsu.settings.SettingsHeadersFragment
+
+abstract class BasePreferenceFragment(@StringRes private val titleId: Int) :
+	PreferenceFragmentCompat(),
+	WindowInsetsDelegate.WindowInsetsListener,
+	RecyclerViewOwner {
+
+	protected val settings by inject<AppSettings>(mode = LazyThreadSafetyMode.NONE)
+
+	@Suppress("LeakingThis")
+	protected val insetsDelegate = WindowInsetsDelegate(this)
+
+	override val recyclerView: RecyclerView
+		get() = listView
+
+	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+		super.onViewCreated(view, savedInstanceState)
+		listView.clipToPadding = false
+		insetsDelegate.onViewCreated(view)
+	}
+
+	override fun onDestroyView() {
+		insetsDelegate.onDestroyView()
+		super.onDestroyView()
+	}
+
+	override fun onResume() {
+		super.onResume()
+		if (titleId != 0) {
+			setTitle(getString(titleId))
+		}
+	}
+
+	@CallSuper
+	override fun onWindowInsetsChanged(insets: Insets) {
+		listView.updatePadding(
+			bottom = insets.bottom
+		)
+	}
+
+	@Suppress("UsePropertyAccessSyntax")
+	protected fun setTitle(title: CharSequence) {
+		(parentFragment as? SettingsHeadersFragment)?.setTitle(title)
+			?: activity?.setTitle(title)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/BaseService.kt

@@ -0,0 +1,5 @@
+package org.koitharu.kotatsu.base.ui
+
+import androidx.lifecycle.LifecycleService
+
+abstract class BaseService : LifecycleService()

app/src/main/java/org/koitharu/kotatsu/base/ui/BaseViewModel.kt

@@ -0,0 +1,44 @@
+package org.koitharu.kotatsu.base.ui
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import kotlin.coroutines.CoroutineContext
+import kotlin.coroutines.EmptyCoroutineContext
+import kotlinx.coroutines.*
+import org.koitharu.kotatsu.BuildConfig
+import org.koitharu.kotatsu.base.ui.util.CountedBooleanLiveData
+import org.koitharu.kotatsu.utils.SingleLiveEvent
+
+abstract class BaseViewModel : ViewModel() {
+
+	val onError = SingleLiveEvent<Throwable>()
+	val isLoading = CountedBooleanLiveData()
+
+	protected fun launchJob(
+		context: CoroutineContext = EmptyCoroutineContext,
+		start: CoroutineStart = CoroutineStart.DEFAULT,
+		block: suspend CoroutineScope.() -> Unit
+	): Job = viewModelScope.launch(context + createErrorHandler(), start, block)
+
+	protected fun launchLoadingJob(
+		context: CoroutineContext = EmptyCoroutineContext,
+		start: CoroutineStart = CoroutineStart.DEFAULT,
+		block: suspend CoroutineScope.() -> Unit
+	): Job = viewModelScope.launch(context + createErrorHandler(), start) {
+		isLoading.postValue(true)
+		try {
+			block()
+		} finally {
+			isLoading.postValue(false)
+		}
+	}
+
+	private fun createErrorHandler() = CoroutineExceptionHandler { _, throwable ->
+		if (BuildConfig.DEBUG) {
+			throwable.printStackTrace()
+		}
+		if (throwable !is CancellationException) {
+			onError.postCall(throwable)
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/CoroutineIntentService.kt

@@ -0,0 +1,37 @@
+package org.koitharu.kotatsu.base.ui
+
+import android.app.Service
+import android.content.Intent
+import androidx.lifecycle.lifecycleScope
+import kotlinx.coroutines.CoroutineDispatcher
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import kotlinx.coroutines.withContext
+
+abstract class CoroutineIntentService : BaseService() {
+
+	private val mutex = Mutex()
+	protected open val dispatcher: CoroutineDispatcher = Dispatchers.Default
+
+	override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+		super.onStartCommand(intent, flags, startId)
+		launchCoroutine(intent, startId)
+		return Service.START_REDELIVER_INTENT
+	}
+
+	private fun launchCoroutine(intent: Intent?, startId: Int) = lifecycleScope.launch {
+		mutex.withLock {
+			try {
+				withContext(dispatcher) {
+					processIntent(intent)
+				}
+			} finally {
+				stopSelf(startId)
+			}
+		}
+	}
+
+	protected abstract suspend fun processIntent(intent: Intent?)
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/dialog/AppBottomSheetDialog.kt

@@ -0,0 +1,29 @@
+package org.koitharu.kotatsu.base.ui.dialog
+
+import android.content.Context
+import android.graphics.Color
+import android.view.View
+import com.google.android.material.bottomsheet.BottomSheetDialog
+
+class AppBottomSheetDialog(context: Context, theme: Int) : BottomSheetDialog(context, theme) {
+
+	/**
+	 * https://github.com/material-components/material-components-android/issues/2582
+	 */
+	@Suppress("DEPRECATION")
+	override fun onAttachedToWindow() {
+		val window = window
+		val initialSystemUiVisibility = window?.decorView?.systemUiVisibility ?: 0
+		super.onAttachedToWindow()
+		if (window != null) {
+			// If the navigation bar is translucent at all, the BottomSheet should be edge to edge
+			val drawEdgeToEdge = edgeToEdgeEnabled && Color.alpha(window.navigationBarColor) < 0xFF
+			if (drawEdgeToEdge) {
+				// Copied from super.onAttachedToWindow:
+				val edgeToEdgeFlags = View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION or View.SYSTEM_UI_FLAG_LAYOUT_STABLE
+				// Fix super-class's window flag bug by respecting the intial system UI visibility:
+				window.decorView.systemUiVisibility = edgeToEdgeFlags or initialSystemUiVisibility
+			}
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/dialog/CheckBoxAlertDialog.kt

@@ -1,15 +1,13 @@
-package org.koitharu.kotatsu.ui.common.dialog
+package org.koitharu.kotatsu.base.ui.dialog
 
-import android.annotation.SuppressLint
 import android.content.Context
 import android.content.DialogInterface
 import android.view.LayoutInflater
 import androidx.annotation.DrawableRes
 import androidx.annotation.StringRes
 import androidx.appcompat.app.AlertDialog
-import com.google.android.material.checkbox.MaterialCheckBox
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
-import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.databinding.DialogCheckboxBinding
 
 class CheckBoxAlertDialog private constructor(private val delegate: AlertDialog) :
 	DialogInterface by delegate {
@@ -18,13 +16,10 @@ class CheckBoxAlertDialog private constructor(private val delegate: AlertDialog)
 
 	class Builder(context: Context) {
 
-		@SuppressLint("InflateParams")
-		private val view = LayoutInflater.from(context)
-			.inflate(R.layout.dialog_checkbox, null, false)
-		private val checkBox = view.findViewById<MaterialCheckBox>(android.R.id.checkbox)
+		private val binding = DialogCheckboxBinding.inflate(LayoutInflater.from(context))
 
 		private val delegate = MaterialAlertDialogBuilder(context)
-			.setView(view)
+			.setView(binding.root)
 
 		fun setTitle(@StringRes titleResId: Int): Builder {
 			delegate.setTitle(titleResId)
@@ -47,12 +42,12 @@ class CheckBoxAlertDialog private constructor(private val delegate: AlertDialog)
 		}
 
 		fun setCheckBoxText(@StringRes textId: Int): Builder {
-			checkBox.setText(textId)
+			binding.checkbox.setText(textId)
 			return this
 		}
 
 		fun setCheckBoxChecked(isChecked: Boolean): Builder {
-			checkBox.isChecked = isChecked
+			binding.checkbox.isChecked = isChecked
 			return this
 		}
 
@@ -66,7 +61,7 @@ class CheckBoxAlertDialog private constructor(private val delegate: AlertDialog)
 			listener: (DialogInterface, Boolean) -> Unit
 		): Builder {
 			delegate.setPositiveButton(textId) { dialog, _ ->
-				listener(dialog, checkBox.isChecked)
+				listener(dialog, binding.checkbox.isChecked)
 			}
 			return this
 		}

app/src/main/java/org/koitharu/kotatsu/base/ui/dialog/StorageSelectDialog.kt

@@ -1,19 +1,18 @@
-package org.koitharu.kotatsu.ui.common.dialog
+package org.koitharu.kotatsu.base.ui.dialog
 
 import android.content.Context
 import android.content.DialogInterface
+import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.BaseAdapter
 import androidx.annotation.StringRes
 import androidx.appcompat.app.AlertDialog
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
-import kotlinx.android.synthetic.main.item_storage.view.*
+import kotlinx.coroutines.runBlocking
 import org.koitharu.kotatsu.R
-import org.koitharu.kotatsu.core.parser.LocalMangaRepository
-import org.koitharu.kotatsu.utils.ext.getStorageName
-import org.koitharu.kotatsu.utils.ext.inflate
-import org.koitharu.kotatsu.utils.ext.longHashCode
+import org.koitharu.kotatsu.databinding.ItemStorageBinding
+import org.koitharu.kotatsu.local.data.LocalStorageManager
 import java.io.File
 
 class StorageSelectDialog private constructor(private val delegate: AlertDialog) :
@@ -21,19 +20,22 @@ class StorageSelectDialog private constructor(private val delegate: AlertDialog)
 
 	fun show() = delegate.show()
 
-	class Builder(context: Context, defaultValue: File?, listener: OnStorageSelectListener) {
+	class Builder(context: Context, storageManager: LocalStorageManager, listener: OnStorageSelectListener) {
 
-		private val adapter = VolumesAdapter(context)
+		private val adapter = VolumesAdapter(storageManager)
 		private val delegate = MaterialAlertDialogBuilder(context)
 
 		init {
 			if (adapter.isEmpty) {
 				delegate.setMessage(R.string.cannot_find_available_storage)
 			} else {
-				val checked = adapter.volumes.indexOfFirst {
+				val defaultValue = runBlocking {
+					storageManager.getDefaultWriteableDir()
+				}
+				adapter.selectedItemPosition = adapter.volumes.indexOfFirst {
 					it.first.canonicalPath == defaultValue?.canonicalPath
 				}
-				delegate.setSingleChoiceItems(adapter, checked) { d, i ->
+				delegate.setAdapter(adapter) { d, i ->
 					listener.onStorageSelected(adapter.getItem(i).first)
 					d.dismiss()
 				}
@@ -58,38 +60,42 @@ class StorageSelectDialog private constructor(private val delegate: AlertDialog)
 		fun create() = StorageSelectDialog(delegate.create())
 	}
 
-	private class VolumesAdapter(context: Context) : BaseAdapter() {
+	private class VolumesAdapter(storageManager: LocalStorageManager) : BaseAdapter() {
 
-		val volumes = getAvailableVolumes(context)
+		var selectedItemPosition: Int = -1
+		val volumes = getAvailableVolumes(storageManager)
 
 		override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
-			val view = convertView ?: parent.inflate(R.layout.item_storage)
+			val view = convertView ?: LayoutInflater.from(parent.context).inflate(R.layout.item_storage, parent, false)
+			val binding = (view.tag as? ItemStorageBinding) ?: ItemStorageBinding.bind(view).also {
+				view.tag = it
+			}
 			val item = volumes[position]
-			view.textView_title.text = item.second
-			view.textView_subtitle.text = item.first.path
+			binding.imageViewIndicator.isChecked = selectedItemPosition == position
+			binding.textViewTitle.text = item.second
+			binding.textViewSubtitle.text = item.first.path
 			return view
 		}
 
 		override fun getItem(position: Int): Pair<File, String> = volumes[position]
 
-		override fun getItemId(position: Int) = volumes[position].first.absolutePath.longHashCode()
+		override fun getItemId(position: Int) = position.toLong()
 
 		override fun getCount() = volumes.size
 
-	}
+		override fun hasStableIds() = true
 
-	interface OnStorageSelectListener {
-
-		fun onStorageSelected(file: File)
-	}
-
-	private companion object {
-
-		@JvmStatic
-		fun getAvailableVolumes(context: Context): List<Pair<File, String>> {
-			return LocalMangaRepository.getAvailableStorageDirs(context).map {
-				it to it.getStorageName(context)
+		private fun getAvailableVolumes(storageManager: LocalStorageManager): List<Pair<File, String>> {
+			return runBlocking {
+				storageManager.getWriteableDirs().map {
+					it to storageManager.getStorageDisplayName(it)
+				}
 			}
 		}
 	}
+
+	fun interface OnStorageSelectListener {
+
+		fun onStorageSelected(file: File)
+	}
 }

app/src/main/java/org/koitharu/kotatsu/base/ui/dialog/TextInputDialog.kt

@@ -1,6 +1,5 @@
-package org.koitharu.kotatsu.ui.common.dialog
+package org.koitharu.kotatsu.base.ui.dialog
 
-import android.annotation.SuppressLint
 import android.content.Context
 import android.content.DialogInterface
 import android.text.InputFilter
@@ -8,21 +7,20 @@ import android.view.LayoutInflater
 import androidx.annotation.StringRes
 import androidx.appcompat.app.AlertDialog
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
-import kotlinx.android.synthetic.main.dialog_input.view.*
-import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.databinding.DialogInputBinding
 
-class TextInputDialog private constructor(private val delegate: AlertDialog) :
-	DialogInterface by delegate {
+class TextInputDialog private constructor(
+	private val delegate: AlertDialog,
+) : DialogInterface by delegate {
 
 	fun show() = delegate.show()
 
 	class Builder(context: Context) {
 
-		@SuppressLint("InflateParams")
-		private val view = LayoutInflater.from(context).inflate(R.layout.dialog_input, null, false)
+		private val binding = DialogInputBinding.inflate(LayoutInflater.from(context))
 
 		private val delegate = MaterialAlertDialogBuilder(context)
-			.setView(view)
+			.setView(binding.root)
 
 		fun setTitle(@StringRes titleResId: Int): Builder {
 			delegate.setTitle(titleResId)
@@ -35,44 +33,55 @@ class TextInputDialog private constructor(private val delegate: AlertDialog) :
 		}
 
 		fun setHint(@StringRes hintResId: Int): Builder {
-			view.inputLayout.hint = view.context.getString(hintResId)
+			binding.inputEdit.hint = binding.root.context.getString(hintResId)
 			return this
 		}
 
 		fun setMaxLength(maxLength: Int, strict: Boolean): Builder {
-			with(view.inputLayout) {
+			with(binding.inputLayout) {
 				counterMaxLength = maxLength
 				isCounterEnabled = maxLength > 0
 			}
 			if (strict && maxLength > 0) {
-				view.inputEdit.filters += InputFilter.LengthFilter(maxLength)
+				binding.inputEdit.filters += InputFilter.LengthFilter(maxLength)
 			}
 			return this
 		}
 
 		fun setInputType(inputType: Int): Builder {
-			view.inputEdit.inputType = inputType
+			binding.inputEdit.inputType = inputType
 			return this
 		}
 
 		fun setText(text: String): Builder {
-			view.inputEdit.setText(text)
-			view.inputEdit.setSelection(text.length)
+			binding.inputEdit.setText(text)
+			binding.inputEdit.setSelection(text.length)
 			return this
 		}
 
-		fun setPositiveButton(@StringRes textId: Int, listener: (DialogInterface, String) -> Unit): Builder {
+		fun setPositiveButton(
+			@StringRes textId: Int,
+			listener: (DialogInterface, String) -> Unit
+		): Builder {
 			delegate.setPositiveButton(textId) { dialog, _ ->
-				listener(dialog, view.inputEdit.text?.toString().orEmpty())
+				listener(dialog, binding.inputEdit.text?.toString().orEmpty())
 			}
 			return this
 		}
 
-		fun setNegativeButton(@StringRes textId: Int, listener: DialogInterface.OnClickListener? = null): Builder {
+		fun setNegativeButton(
+			@StringRes textId: Int,
+			listener: DialogInterface.OnClickListener? = null
+		): Builder {
 			delegate.setNegativeButton(textId, listener)
 			return this
 		}
 
+		fun setOnCancelListener(listener: DialogInterface.OnCancelListener): Builder {
+			delegate.setOnCancelListener(listener)
+			return this
+		}
+
 		fun create() =
 			TextInputDialog(delegate.create())
 

app/src/main/java/org/koitharu/kotatsu/base/ui/list/BoundsScrollListener.kt

@@ -1,4 +1,4 @@
-package org.koitharu.kotatsu.ui.common.list
+package org.koitharu.kotatsu.base.ui.list
 
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView

app/src/main/java/org/koitharu/kotatsu/base/ui/list/FitHeightGridLayoutManager.kt

@@ -0,0 +1,37 @@
+package org.koitharu.kotatsu.base.ui.list
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.View
+import androidx.recyclerview.widget.GridLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+
+class FitHeightGridLayoutManager : GridLayoutManager {
+
+	constructor(context: Context?, spanCount: Int) : super(context, spanCount)
+
+	constructor(
+		context: Context?,
+		attrs: AttributeSet?,
+		defStyleAttr: Int,
+		defStyleRes: Int,
+	) : super(context, attrs, defStyleAttr, defStyleRes)
+
+	constructor(
+		context: Context?,
+		spanCount: Int,
+		orientation: Int,
+		reverseLayout: Boolean,
+	) : super(context, spanCount, orientation, reverseLayout)
+
+
+	override fun layoutDecoratedWithMargins(child: View, left: Int, top: Int, right: Int, bottom: Int) {
+		if (orientation == RecyclerView.VERTICAL && child.layoutParams.height == LayoutParams.MATCH_PARENT) {
+			val parentBottom = height - paddingBottom
+			val offset = parentBottom - bottom
+			super.layoutDecoratedWithMargins(child, left, top + offset, right, bottom + offset)
+		} else {
+			super.layoutDecoratedWithMargins(child, left, top, right, bottom)
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/list/FitHeightLinearLayoutManager.kt

@@ -0,0 +1,37 @@
+package org.koitharu.kotatsu.base.ui.list
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.View
+import androidx.annotation.AttrRes
+import androidx.annotation.StyleRes
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import androidx.recyclerview.widget.RecyclerView.LayoutParams
+
+class FitHeightLinearLayoutManager : LinearLayoutManager {
+
+	constructor(context: Context) : super(context)
+	constructor(
+		context: Context,
+		@RecyclerView.Orientation orientation: Int,
+		reverseLayout: Boolean,
+	) : super(context, orientation, reverseLayout)
+
+	constructor(
+		context: Context,
+		attrs: AttributeSet?,
+		@AttrRes defStyleAttr: Int,
+		@StyleRes defStyleRes: Int,
+	) : super(context, attrs, defStyleAttr, defStyleRes)
+
+	override fun layoutDecoratedWithMargins(child: View, left: Int, top: Int, right: Int, bottom: Int) {
+		if (orientation == RecyclerView.VERTICAL && child.layoutParams.height == LayoutParams.MATCH_PARENT) {
+			val parentBottom = height - paddingBottom
+			val offset = parentBottom - bottom
+			super.layoutDecoratedWithMargins(child, left, top + offset, right, bottom + offset)
+		} else {
+			super.layoutDecoratedWithMargins(child, left, top, right, bottom)
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/list/OnListItemClickListener.kt

@@ -0,0 +1,10 @@
+package org.koitharu.kotatsu.base.ui.list
+
+import android.view.View
+
+interface OnListItemClickListener<I> {
+
+	fun onItemClick(item: I, view: View)
+
+	fun onItemLongClick(item: I, view: View) = false
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/list/PaginationScrollListener.kt

@@ -0,0 +1,18 @@
+package org.koitharu.kotatsu.base.ui.list
+
+import androidx.recyclerview.widget.RecyclerView
+
+class PaginationScrollListener(offset: Int, private val callback: Callback) :
+	BoundsScrollListener(0, offset) {
+
+	override fun onScrolledToStart(recyclerView: RecyclerView) = Unit
+
+	override fun onScrolledToEnd(recyclerView: RecyclerView) {
+		callback.onScrolledToEnd()
+	}
+
+	interface Callback {
+
+		fun onScrolledToEnd()
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/list/decor/AbstractDividerItemDecoration.kt

@@ -0,0 +1,87 @@
+package org.koitharu.kotatsu.base.ui.list.decor
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.graphics.Canvas
+import android.graphics.Paint
+import android.graphics.Rect
+import android.view.View
+import androidx.core.content.res.getColorOrThrow
+import androidx.core.view.children
+import androidx.recyclerview.widget.RecyclerView
+import com.google.android.material.R as materialR
+
+@SuppressLint("PrivateResource")
+abstract class AbstractDividerItemDecoration(context: Context) : RecyclerView.ItemDecoration() {
+
+	private val bounds = Rect()
+	private val thickness: Int
+	private val paint = Paint(Paint.ANTI_ALIAS_FLAG)
+
+	init {
+		paint.style = Paint.Style.FILL
+		val ta = context.obtainStyledAttributes(
+			null,
+			materialR.styleable.MaterialDivider,
+			materialR.attr.materialDividerStyle,
+			materialR.style.Widget_Material3_MaterialDivider,
+		)
+		paint.color = ta.getColorOrThrow(materialR.styleable.MaterialDivider_dividerColor)
+		thickness = ta.getDimensionPixelSize(
+			materialR.styleable.MaterialDivider_dividerThickness,
+			context.resources.getDimensionPixelSize(materialR.dimen.material_divider_thickness),
+		)
+		ta.recycle()
+	}
+
+
+	override fun getItemOffsets(
+		outRect: Rect,
+		view: View,
+		parent: RecyclerView,
+		state: RecyclerView.State,
+	) {
+		outRect.set(0, thickness, 0, 0)
+	}
+
+	// TODO implement for horizontal lists on demand
+	override fun onDraw(canvas: Canvas, parent: RecyclerView, s: RecyclerView.State) {
+		if (parent.layoutManager == null || thickness == 0) {
+			return
+		}
+		canvas.save()
+		val left: Float
+		val right: Float
+		if (parent.clipToPadding) {
+			left = parent.paddingLeft.toFloat()
+			right = (parent.width - parent.paddingRight).toFloat()
+			canvas.clipRect(
+				left,
+				parent.paddingTop.toFloat(),
+				right,
+				(parent.height - parent.paddingBottom).toFloat()
+			)
+		} else {
+			left = 0f
+			right = parent.width.toFloat()
+		}
+
+		var previous: RecyclerView.ViewHolder? = null
+		for (child in parent.children) {
+			val holder = parent.getChildViewHolder(child)
+			if (previous != null && shouldDrawDivider(previous, holder)) {
+				parent.getDecoratedBoundsWithMargins(child, bounds)
+				val top: Float = bounds.top + child.translationY
+				val bottom: Float = top + thickness
+				canvas.drawRect(left, top, right, bottom, paint)
+			}
+			previous = holder
+		}
+		canvas.restore()
+	}
+
+	protected abstract fun shouldDrawDivider(
+		above: RecyclerView.ViewHolder,
+		below: RecyclerView.ViewHolder,
+	): Boolean
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/list/decor/AbstractSelectionItemDecoration.kt

@@ -0,0 +1,111 @@
+package org.koitharu.kotatsu.base.ui.list.decor
+
+import android.graphics.Canvas
+import android.graphics.Rect
+import android.graphics.RectF
+import android.view.View
+import androidx.core.view.children
+import androidx.recyclerview.widget.RecyclerView
+import androidx.recyclerview.widget.RecyclerView.NO_ID
+
+abstract class AbstractSelectionItemDecoration : RecyclerView.ItemDecoration() {
+
+	private val bounds = Rect()
+	private val boundsF = RectF()
+	private val selection = HashSet<Long>()
+
+	protected var hasBackground: Boolean = true
+	protected var hasForeground: Boolean = false
+	protected var isIncludeDecorAndMargins: Boolean = true
+
+	val checkedItemsCount: Int
+		get() = selection.size
+
+	val checkedItemsIds: Set<Long>
+		get() = selection
+
+	fun toggleItemChecked(id: Long) {
+		if (!selection.remove(id)) {
+			selection.add(id)
+		}
+	}
+
+	fun setItemIsChecked(id: Long, isChecked: Boolean) {
+		if (isChecked) {
+			selection.add(id)
+		} else {
+			selection.remove(id)
+		}
+	}
+
+	fun checkAll(ids: Collection<Long>) {
+		selection.addAll(ids)
+	}
+
+	fun clearSelection() {
+		selection.clear()
+	}
+
+	override fun onDraw(canvas: Canvas, parent: RecyclerView, state: RecyclerView.State) {
+		if (hasBackground) {
+			doDraw(canvas, parent, state, false)
+		} else {
+			super.onDraw(canvas, parent, state)
+		}
+	}
+
+	override fun onDrawOver(canvas: Canvas, parent: RecyclerView, state: RecyclerView.State) {
+		if (hasForeground) {
+			doDraw(canvas, parent, state, true)
+		} else {
+			super.onDrawOver(canvas, parent, state)
+		}
+	}
+
+	private fun doDraw(canvas: Canvas, parent: RecyclerView, state: RecyclerView.State, isOver: Boolean) {
+		val checkpoint = canvas.save()
+		if (parent.clipToPadding) {
+			canvas.clipRect(
+				parent.paddingLeft, parent.paddingTop, parent.width - parent.paddingRight,
+				parent.height - parent.paddingBottom
+			)
+		}
+
+		for (child in parent.children) {
+			val itemId = getItemId(parent, child)
+			if (itemId != NO_ID && itemId in selection) {
+				if (isIncludeDecorAndMargins) {
+					parent.getDecoratedBoundsWithMargins(child, bounds)
+				} else {
+					bounds.set(child.left, child.top, child.right, child.bottom)
+				}
+				boundsF.set(bounds)
+				boundsF.offset(child.translationX, child.translationY)
+				if (isOver) {
+					onDrawForeground(canvas, parent, child, boundsF, state)
+				} else {
+					onDrawBackground(canvas, parent, child, boundsF, state)
+				}
+			}
+		}
+		canvas.restoreToCount(checkpoint)
+	}
+
+	protected open fun getItemId(parent: RecyclerView, child: View) = parent.getChildItemId(child)
+
+	protected open fun onDrawBackground(
+		canvas: Canvas,
+		parent: RecyclerView,
+		child: View,
+		bounds: RectF,
+		state: RecyclerView.State,
+	) = Unit
+
+	protected open fun onDrawForeground(
+		canvas: Canvas,
+		parent: RecyclerView,
+		child: View,
+		bounds: RectF,
+		state: RecyclerView.State,
+	) = Unit
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/list/decor/SpacingItemDecoration.kt

@@ -0,0 +1,18 @@
+package org.koitharu.kotatsu.base.ui.list.decor
+
+import android.graphics.Rect
+import android.view.View
+import androidx.annotation.Px
+import androidx.recyclerview.widget.RecyclerView
+
+class SpacingItemDecoration(@Px private val spacing: Int) : RecyclerView.ItemDecoration() {
+
+	override fun getItemOffsets(
+		outRect: Rect,
+		view: View,
+		parent: RecyclerView,
+		state: RecyclerView.State
+	) {
+		outRect.set(spacing, spacing, spacing, spacing)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/list/decor/TypedSpacingItemDecoration.kt

@@ -0,0 +1,35 @@
+package org.koitharu.kotatsu.base.ui.list.decor
+
+import android.graphics.Rect
+import android.util.SparseIntArray
+import android.view.View
+import androidx.core.util.getOrDefault
+import androidx.core.util.set
+import androidx.recyclerview.widget.RecyclerView
+
+class TypedSpacingItemDecoration(
+	vararg spacingMapping: Pair<Int, Int>,
+	private val fallbackSpacing: Int = 0,
+) : RecyclerView.ItemDecoration() {
+
+	private val mapping = SparseIntArray(spacingMapping.size)
+	
+	init {
+		spacingMapping.forEach { (k, v) -> mapping[k] = v }
+	}
+
+	override fun getItemOffsets(
+		outRect: Rect,
+		view: View,
+		parent: RecyclerView,
+		state: RecyclerView.State
+	) {
+		val itemType = parent.getChildViewHolder(view)?.itemViewType
+		val spacing = if (itemType == null) {
+			fallbackSpacing
+		} else {
+			mapping.getOrDefault(itemType, fallbackSpacing)
+		}
+		outRect.set(spacing, spacing, spacing, spacing)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/util/ActionModeDelegate.kt

@@ -0,0 +1,50 @@
+package org.koitharu.kotatsu.base.ui.util
+
+import androidx.appcompat.view.ActionMode
+import androidx.lifecycle.DefaultLifecycleObserver
+import androidx.lifecycle.LifecycleOwner
+
+class ActionModeDelegate {
+
+	private var activeActionMode: ActionMode? = null
+	private var listeners: MutableList<ActionModeListener>? = null
+
+	val isActionModeStarted: Boolean
+		get() = activeActionMode != null
+
+	fun onSupportActionModeStarted(mode: ActionMode) {
+		activeActionMode = mode
+		listeners?.forEach { it.onActionModeStarted(mode) }
+	}
+
+	fun onSupportActionModeFinished(mode: ActionMode) {
+		activeActionMode = null
+		listeners?.forEach { it.onActionModeFinished(mode) }
+	}
+
+	fun addListener(listener: ActionModeListener) {
+		if (listeners == null) {
+			listeners = ArrayList()
+		}
+		checkNotNull(listeners).add(listener)
+	}
+
+	fun removeListener(listener: ActionModeListener) {
+		listeners?.remove(listener)
+	}
+
+	fun addListener(listener: ActionModeListener, owner: LifecycleOwner) {
+		addListener(listener)
+		owner.lifecycle.addObserver(ListenerLifecycleObserver(listener))
+	}
+
+	private inner class ListenerLifecycleObserver(
+		private val listener: ActionModeListener,
+	) : DefaultLifecycleObserver {
+
+		override fun onDestroy(owner: LifecycleOwner) {
+			super.onDestroy(owner)
+			removeListener(listener)
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/util/ActionModeListener.kt

@@ -0,0 +1,10 @@
+package org.koitharu.kotatsu.base.ui.util
+
+import androidx.appcompat.view.ActionMode
+
+interface ActionModeListener {
+
+	fun onActionModeStarted(mode: ActionMode)
+
+	fun onActionModeFinished(mode: ActionMode)
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/util/CountedBooleanLiveData.kt

@@ -0,0 +1,20 @@
+package org.koitharu.kotatsu.base.ui.util
+
+import androidx.lifecycle.MutableLiveData
+
+class CountedBooleanLiveData : MutableLiveData<Boolean>(false) {
+
+	private var counter = 0
+
+	override fun setValue(value: Boolean) {
+		if (value) {
+			counter++
+		} else {
+			counter--
+		}
+		val newValue = counter > 0
+		if (newValue != this.value) {
+			super.setValue(newValue)
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/util/RecyclerViewOwner.kt

@@ -0,0 +1,8 @@
+package org.koitharu.kotatsu.base.ui.util
+
+import androidx.recyclerview.widget.RecyclerView
+
+interface RecyclerViewOwner {
+
+	val recyclerView: RecyclerView
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/util/ShrinkOnScrollBehavior.kt

@@ -0,0 +1,48 @@
+package org.koitharu.kotatsu.base.ui.util
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.View
+import androidx.coordinatorlayout.widget.CoordinatorLayout
+import androidx.coordinatorlayout.widget.CoordinatorLayout.Behavior
+import androidx.core.view.ViewCompat
+import com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton
+
+class ShrinkOnScrollBehavior : Behavior<ExtendedFloatingActionButton> {
+
+	@Suppress("unused") constructor() : super()
+	@Suppress("unused") constructor(context: Context?, attrs: AttributeSet?) : super(context, attrs)
+
+	override fun onStartNestedScroll(
+		coordinatorLayout: CoordinatorLayout,
+		child: ExtendedFloatingActionButton,
+		directTargetChild: View,
+		target: View,
+		axes: Int,
+		type: Int
+	): Boolean {
+		return axes == ViewCompat.SCROLL_AXIS_VERTICAL
+	}
+
+	override fun onNestedScroll(
+		coordinatorLayout: CoordinatorLayout,
+		child: ExtendedFloatingActionButton,
+		target: View,
+		dxConsumed: Int,
+		dyConsumed: Int,
+		dxUnconsumed: Int,
+		dyUnconsumed: Int,
+		type: Int,
+		consumed: IntArray
+	) {
+		if (dyConsumed > 0) {
+			if (child.isExtended) {
+				child.shrink()
+			}
+		} else if (dyConsumed < 0) {
+			if (!child.isExtended) {
+				child.extend()
+			}
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/util/WindowInsetsDelegate.kt

@@ -0,0 +1,69 @@
+package org.koitharu.kotatsu.base.ui.util
+
+import android.view.View
+import androidx.core.graphics.Insets
+import androidx.core.view.OnApplyWindowInsetsListener
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowInsetsCompat
+
+class WindowInsetsDelegate(
+	private val listener: WindowInsetsListener,
+) : OnApplyWindowInsetsListener, View.OnLayoutChangeListener {
+
+	var handleImeInsets: Boolean = false
+
+	var interceptingWindowInsetsListener: OnApplyWindowInsetsListener? = null
+
+	private var lastInsets: Insets? = null
+
+	override fun onApplyWindowInsets(v: View?, insets: WindowInsetsCompat?): WindowInsetsCompat? {
+		if (insets == null) {
+			return null
+		}
+		val handledInsets = interceptingWindowInsetsListener?.onApplyWindowInsets(v, insets) ?: insets
+		val newInsets = if (handleImeInsets) {
+			Insets.max(
+				handledInsets.getInsets(WindowInsetsCompat.Type.systemBars()),
+				handledInsets.getInsets(WindowInsetsCompat.Type.ime()),
+			)
+		} else {
+			handledInsets.getInsets(WindowInsetsCompat.Type.systemBars())
+		}
+		if (newInsets != lastInsets) {
+			listener.onWindowInsetsChanged(newInsets)
+			lastInsets = newInsets
+		}
+		return handledInsets
+	}
+
+	override fun onLayoutChange(
+		view: View,
+		left: Int,
+		top: Int,
+		right: Int,
+		bottom: Int,
+		oldLeft: Int,
+		oldTop: Int,
+		oldRight: Int,
+		oldBottom: Int,
+	) {
+		view.removeOnLayoutChangeListener(this)
+		if (lastInsets == null) { // Listener may not be called
+			onApplyWindowInsets(view, ViewCompat.getRootWindowInsets(view))
+		}
+	}
+
+	fun onViewCreated(view: View) {
+		ViewCompat.setOnApplyWindowInsetsListener(view, this)
+		view.addOnLayoutChangeListener(this)
+	}
+
+	fun onDestroyView() {
+		lastInsets = null
+	}
+
+	interface WindowInsetsListener {
+
+		fun onWindowInsetsChanged(insets: Insets)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/widgets/CheckableButtonGroup.kt

@@ -0,0 +1,42 @@
+package org.koitharu.kotatsu.base.ui.widgets
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.View
+import android.view.ViewGroup
+import android.widget.LinearLayout
+import androidx.annotation.AttrRes
+import androidx.annotation.IdRes
+import androidx.core.view.children
+import com.google.android.material.button.MaterialButton
+
+class CheckableButtonGroup @JvmOverloads constructor(
+	context: Context,
+	attrs: AttributeSet? = null,
+	@AttrRes defStyleAttr: Int = 0,
+) : LinearLayout(context, attrs, defStyleAttr), View.OnClickListener {
+
+	var onCheckedChangeListener: OnCheckedChangeListener? = null
+
+	override fun addView(child: View?, index: Int, params: ViewGroup.LayoutParams?) {
+		if (child is MaterialButton) {
+			child.setOnClickListener(this)
+		}
+		super.addView(child, index, params)
+	}
+
+	override fun onClick(v: View) {
+		setCheckedId(v.id)
+	}
+
+	fun setCheckedId(@IdRes viewRes: Int) {
+		children.forEach {
+			(it as? MaterialButton)?.isChecked = it.id == viewRes
+		}
+		onCheckedChangeListener?.onCheckedChanged(this, viewRes)
+	}
+
+	fun interface OnCheckedChangeListener {
+		fun onCheckedChanged(group: CheckableButtonGroup, checkedId: Int)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/widgets/CheckableImageView.kt

@@ -0,0 +1,102 @@
+package org.koitharu.kotatsu.base.ui.widgets
+
+import android.content.Context
+import android.os.Parcel
+import android.os.Parcelable
+import android.os.Parcelable.Creator
+import android.util.AttributeSet
+import android.view.View
+import android.widget.Checkable
+import androidx.annotation.AttrRes
+import androidx.appcompat.widget.AppCompatImageView
+import androidx.core.os.ParcelCompat
+
+class CheckableImageView @JvmOverloads constructor(
+	context: Context,
+	attrs: AttributeSet? = null,
+	@AttrRes defStyleAttr: Int = 0,
+) : AppCompatImageView(context, attrs, defStyleAttr), Checkable {
+
+	private var isCheckedInternal = false
+	private var isBroadcasting = false
+
+	var onCheckedChangeListener: OnCheckedChangeListener? = null
+
+	override fun isChecked() = isCheckedInternal
+
+	override fun toggle() {
+		isChecked = !isCheckedInternal
+	}
+
+	override fun setChecked(checked: Boolean) {
+		if (checked != isCheckedInternal) {
+			isCheckedInternal = checked
+			refreshDrawableState()
+			if (!isBroadcasting) {
+				isBroadcasting = true
+				onCheckedChangeListener?.onCheckedChanged(this, checked)
+				isBroadcasting = false
+			}
+		}
+	}
+
+	override fun onCreateDrawableState(extraSpace: Int): IntArray {
+		val state = super.onCreateDrawableState(extraSpace + 1)
+		if (isCheckedInternal) {
+			mergeDrawableStates(state, intArrayOf(android.R.attr.state_checked))
+		}
+		return state
+	}
+
+	override fun onSaveInstanceState(): Parcelable? {
+		val superState = super.onSaveInstanceState() ?: return null
+		return SavedState(superState, isChecked)
+	}
+
+	override fun onRestoreInstanceState(state: Parcelable?) {
+		if (state is SavedState) {
+			super.onRestoreInstanceState(state.superState)
+			isChecked = state.isChecked
+		} else {
+			super.onRestoreInstanceState(state)
+		}
+	}
+
+	class ToggleOnClickListener : OnClickListener {
+		override fun onClick(view: View) {
+			(view as? Checkable)?.toggle()
+		}
+	}
+
+	fun interface OnCheckedChangeListener {
+
+		fun onCheckedChanged(view: CheckableImageView, isChecked: Boolean)
+	}
+
+	private class SavedState : BaseSavedState {
+
+		val isChecked: Boolean
+
+		constructor(superState: Parcelable, checked: Boolean) : super(superState) {
+			isChecked = checked
+		}
+
+		constructor(source: Parcel) : super(source) {
+			isChecked = ParcelCompat.readBoolean(source)
+		}
+
+		override fun writeToParcel(out: Parcel, flags: Int) {
+			super.writeToParcel(out, flags)
+			ParcelCompat.writeBoolean(out, isChecked)
+		}
+
+		companion object {
+			@JvmField
+			val CREATOR: Creator<SavedState> = object : Creator<SavedState> {
+				override fun createFromParcel(`in`: Parcel) = SavedState(`in`)
+
+				override fun newArray(size: Int): Array<SavedState?> = arrayOfNulls(size)
+			}
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/widgets/ChipsView.kt

@@ -0,0 +1,134 @@
+package org.koitharu.kotatsu.base.ui.widgets
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.View.OnClickListener
+import androidx.annotation.DrawableRes
+import androidx.core.view.children
+import com.google.android.material.chip.Chip
+import com.google.android.material.chip.ChipDrawable
+import com.google.android.material.chip.ChipGroup
+import org.koitharu.kotatsu.R
+
+class ChipsView @JvmOverloads constructor(
+	context: Context,
+	attrs: AttributeSet? = null,
+	defStyleAttr: Int = com.google.android.material.R.attr.chipGroupStyle
+) : ChipGroup(context, attrs, defStyleAttr) {
+
+	private var isLayoutSuppressedCompat = false
+	private var isLayoutCalledOnSuppressed = false
+	private var chipOnClickListener = OnClickListener {
+		onChipClickListener?.onChipClick(it as Chip, it.tag)
+	}
+	private var chipOnCloseListener = OnClickListener {
+		onChipCloseClickListener?.onChipCloseClick(it as Chip, it.tag)
+	}
+	var onChipClickListener: OnChipClickListener? = null
+		set(value) {
+			field = value
+			val isChipClickable = value != null
+			children.forEach { it.isClickable = isChipClickable }
+		}
+	var onChipCloseClickListener: OnChipCloseClickListener? = null
+		set(value) {
+			field = value
+			val isCloseIconVisible = value != null
+			children.forEach { (it as? Chip)?.isCloseIconVisible = isCloseIconVisible }
+		}
+
+	override fun requestLayout() {
+		if (isLayoutSuppressedCompat) {
+			isLayoutCalledOnSuppressed = true
+		} else {
+			super.requestLayout()
+		}
+	}
+
+	fun setChips(items: Collection<ChipModel>) {
+		suppressLayoutCompat(true)
+		try {
+			for ((i, model) in items.withIndex()) {
+				val chip = getChildAt(i) as Chip? ?: addChip()
+				bindChip(chip, model)
+			}
+			if (childCount > items.size) {
+				removeViews(items.size, childCount - items.size)
+			}
+		} finally {
+			suppressLayoutCompat(false)
+		}
+	}
+
+	private fun bindChip(chip: Chip, model: ChipModel) {
+		chip.text = model.title
+		if (model.icon == 0) {
+			chip.isChipIconVisible = false
+		} else {
+			chip.isCheckedIconVisible = true
+			chip.setChipIconResource(model.icon)
+		}
+		chip.isClickable = onChipClickListener != null
+		chip.tag = model.data
+	}
+
+	private fun addChip(): Chip {
+		val chip = Chip(context)
+		val drawable = ChipDrawable.createFromAttributes(context, null, 0, R.style.Widget_Kotatsu_Chip)
+		chip.setChipDrawable(drawable)
+		chip.isCloseIconVisible = onChipCloseClickListener != null
+		chip.setOnCloseIconClickListener(chipOnCloseListener)
+		chip.setEnsureMinTouchTargetSize(false)
+		chip.setOnClickListener(chipOnClickListener)
+		chip.isCheckable = false
+		addView(chip)
+		return chip
+	}
+
+	private fun suppressLayoutCompat(suppress: Boolean) {
+		isLayoutSuppressedCompat = suppress
+		if (!suppress) {
+			if (isLayoutCalledOnSuppressed) {
+				requestLayout()
+				isLayoutCalledOnSuppressed = false
+			}
+		}
+	}
+
+	class ChipModel(
+		@DrawableRes val icon: Int,
+		val title: CharSequence,
+		val data: Any? = null
+	) {
+
+		override fun equals(other: Any?): Boolean {
+			if (this === other) return true
+			if (javaClass != other?.javaClass) return false
+
+			other as ChipModel
+
+			if (icon != other.icon) return false
+			if (title != other.title) return false
+			if (data != other.data) return false
+
+			return true
+		}
+
+		override fun hashCode(): Int {
+			var result = icon
+			result = 31 * result + title.hashCode()
+			result = 31 * result + data.hashCode()
+			return result
+		}
+	}
+
+	fun interface OnChipClickListener {
+
+		fun onChipClick(chip: Chip, data: Any?)
+	}
+
+	fun interface OnChipCloseClickListener {
+
+		fun onChipCloseClick(chip: Chip, data: Any?)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/widgets/CoverImageView.kt

@@ -0,0 +1,43 @@
+package org.koitharu.kotatsu.base.ui.widgets
+
+import android.content.Context
+import android.util.AttributeSet
+import android.widget.LinearLayout.HORIZONTAL
+import android.widget.LinearLayout.VERTICAL
+import androidx.annotation.AttrRes
+import androidx.core.content.withStyledAttributes
+import com.google.android.material.imageview.ShapeableImageView
+import org.koitharu.kotatsu.R
+import kotlin.math.roundToInt
+
+private const val ASPECT_RATIO_HEIGHT = 18f
+private const val ASPECT_RATIO_WIDTH = 13f
+
+class CoverImageView @JvmOverloads constructor(
+	context: Context,
+	attrs: AttributeSet? = null,
+	@AttrRes defStyleAttr: Int = 0,
+) : ShapeableImageView(context, attrs, defStyleAttr) {
+
+	private var orientation: Int = HORIZONTAL
+
+	init {
+		context.withStyledAttributes(attrs, R.styleable.CoverImageView, defStyleAttr) {
+			orientation = getInt(R.styleable.CoverImageView_android_orientation, orientation)
+		}
+	}
+
+	override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
+		super.onMeasure(widthMeasureSpec, heightMeasureSpec)
+		val desiredWidth: Int
+		val desiredHeight: Int
+		if (orientation == VERTICAL) {
+			desiredHeight = measuredHeight
+			desiredWidth = (desiredHeight * ASPECT_RATIO_WIDTH / ASPECT_RATIO_HEIGHT).roundToInt()
+		} else {
+			desiredWidth = measuredWidth
+			desiredHeight = (desiredWidth * ASPECT_RATIO_HEIGHT / ASPECT_RATIO_WIDTH).roundToInt()
+		}
+		setMeasuredDimension(desiredWidth, desiredHeight)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/widgets/FadingSnackbar.kt

@@ -0,0 +1,94 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.koitharu.kotatsu.base.ui.widgets
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.LayoutInflater
+import android.widget.Button
+import android.widget.FrameLayout
+import android.widget.TextView
+import androidx.annotation.StringRes
+import androidx.core.view.postDelayed
+import org.koitharu.kotatsu.R
+
+private const val ENTER_DURATION = 300L
+private const val EXIT_DURATION = 200L
+private const val SHORT_DURATION = 1_500L
+private const val LONG_DURATION = 2_750L
+/**
+ * A custom snackbar implementation allowing more control over placement and entry/exit animations.
+ *
+ * Xtimms: Well, my sufferings over the Snackbar in [DetailsActivity] will go away forever... Thanks, Google.
+ *
+ * https://github.com/google/iosched/blob/main/mobile/src/main/java/com/google/samples/apps/iosched/widget/FadingSnackbar.kt
+ */
+class FadingSnackbar @JvmOverloads constructor(
+	context: Context,
+	attrs: AttributeSet? = null,
+	defStyleAttr: Int = 0
+) : FrameLayout(context, attrs, defStyleAttr) {
+
+	private val message: TextView
+	private val action: Button
+
+	init {
+		val view = LayoutInflater.from(context).inflate(R.layout.fading_snackbar_layout, this, true)
+		message = view.findViewById(R.id.snackbar_text)
+		action = view.findViewById(R.id.snackbar_action)
+	}
+
+	fun dismiss() {
+		if (visibility == VISIBLE && alpha == 1f) {
+			animate()
+				.alpha(0f)
+				.withEndAction { visibility = GONE }
+				.duration = EXIT_DURATION
+		}
+	}
+
+	fun show(
+		messageText: CharSequence? = null,
+		@StringRes actionId: Int? = null,
+		longDuration: Boolean = true,
+		actionClick: () -> Unit = { dismiss() },
+		dismissListener: () -> Unit = { }
+	) {
+		message.text = messageText
+		if (actionId != null) {
+			action.run {
+				visibility = VISIBLE
+				text = context.getString(actionId)
+				setOnClickListener {
+					actionClick()
+				}
+			}
+		} else {
+			action.visibility = GONE
+		}
+		alpha = 0f
+		visibility = VISIBLE
+		animate()
+			.alpha(1f)
+			.duration = ENTER_DURATION
+		val showDuration = ENTER_DURATION + if (longDuration) LONG_DURATION else SHORT_DURATION
+		postDelayed(showDuration) {
+			dismiss()
+			dismissListener()
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/widgets/ListItemTextView.kt

@@ -0,0 +1,125 @@
+package org.koitharu.kotatsu.base.ui.widgets
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.content.res.ColorStateList
+import android.content.res.TypedArray
+import android.graphics.Color
+import android.graphics.drawable.Drawable
+import android.graphics.drawable.InsetDrawable
+import android.graphics.drawable.RippleDrawable
+import android.graphics.drawable.ShapeDrawable
+import android.graphics.drawable.shapes.RectShape
+import android.util.AttributeSet
+import androidx.annotation.AttrRes
+import androidx.appcompat.widget.AppCompatCheckedTextView
+import androidx.core.content.withStyledAttributes
+import com.google.android.material.ripple.RippleUtils
+import com.google.android.material.shape.MaterialShapeDrawable
+import com.google.android.material.shape.ShapeAppearanceModel
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.utils.ext.getThemeColorStateList
+
+@SuppressLint("RestrictedApi")
+class ListItemTextView @JvmOverloads constructor(
+	context: Context,
+	attrs: AttributeSet? = null,
+	@AttrRes defStyleAttr: Int = R.attr.listItemTextViewStyle,
+) : AppCompatCheckedTextView(context, attrs, defStyleAttr) {
+
+	private var checkedDrawableStart: Drawable? = null
+	private var checkedDrawableEnd: Drawable? = null
+	private var isInitialized = false
+	private var isCheckDrawablesVisible: Boolean = false
+	private var defaultPaddingStart: Int = 0
+	private var defaultPaddingEnd: Int = 0
+
+	init {
+		context.withStyledAttributes(attrs, R.styleable.ListItemTextView, defStyleAttr) {
+			val itemRippleColor = getColorStateList(R.styleable.ListItemTextView_rippleColor)
+				?: getRippleColorFallback(context)
+			val shape = createShapeDrawable(this)
+			background = RippleDrawable(
+				RippleUtils.sanitizeRippleDrawableColor(itemRippleColor),
+				shape,
+				ShapeDrawable(RectShape()),
+			)
+			checkedDrawableStart = getDrawable(R.styleable.ListItemTextView_checkedDrawableStart)
+			checkedDrawableEnd = getDrawable(R.styleable.ListItemTextView_checkedDrawableEnd)
+		}
+		checkedDrawableStart?.setTintList(textColors)
+		checkedDrawableEnd?.setTintList(textColors)
+		defaultPaddingStart = paddingStart
+		defaultPaddingEnd = paddingEnd
+		isInitialized = true
+		adjustCheckDrawables()
+	}
+
+	override fun refreshDrawableState() {
+		super.refreshDrawableState()
+		adjustCheckDrawables()
+	}
+
+	override fun setTextColor(colors: ColorStateList?) {
+		checkedDrawableStart?.setTintList(colors)
+		checkedDrawableEnd?.setTintList(colors)
+		super.setTextColor(colors)
+	}
+
+	override fun setPaddingRelative(start: Int, top: Int, end: Int, bottom: Int) {
+		defaultPaddingStart = start
+		defaultPaddingEnd = end
+		super.setPaddingRelative(start, top, end, bottom)
+	}
+
+	override fun setPadding(left: Int, top: Int, right: Int, bottom: Int) {
+		val isRtl = layoutDirection == LAYOUT_DIRECTION_RTL
+		defaultPaddingStart = if (isRtl) right else left
+		defaultPaddingEnd = if (isRtl) left else right
+		super.setPadding(left, top, right, bottom)
+	}
+
+	private fun adjustCheckDrawables() {
+		if (isInitialized && isCheckDrawablesVisible != isChecked) {
+			setCompoundDrawablesRelativeWithIntrinsicBounds(
+				if (isChecked) checkedDrawableStart else null,
+				null,
+				if (isChecked) checkedDrawableEnd else null,
+				null,
+			)
+			super.setPaddingRelative(
+				if (isChecked && checkedDrawableStart != null) {
+					defaultPaddingStart + compoundDrawablePadding
+				} else defaultPaddingStart,
+				paddingTop,
+				if (isChecked && checkedDrawableEnd != null) {
+					defaultPaddingEnd + compoundDrawablePadding
+				} else defaultPaddingEnd,
+				paddingBottom,
+			)
+			isCheckDrawablesVisible = isChecked
+		}
+	}
+
+	private fun createShapeDrawable(ta: TypedArray): InsetDrawable {
+		val shapeAppearance = ShapeAppearanceModel.builder(
+			context,
+			ta.getResourceId(R.styleable.ListItemTextView_shapeAppearance, 0),
+			ta.getResourceId(R.styleable.ListItemTextView_shapeAppearanceOverlay, 0),
+		).build()
+		val shapeDrawable = MaterialShapeDrawable(shapeAppearance)
+		shapeDrawable.fillColor = ta.getColorStateList(R.styleable.ListItemTextView_backgroundTint)
+		return InsetDrawable(
+			shapeDrawable,
+			ta.getDimensionPixelOffset(R.styleable.ListItemTextView_android_insetLeft, 0),
+			ta.getDimensionPixelOffset(R.styleable.ListItemTextView_android_insetTop, 0),
+			ta.getDimensionPixelOffset(R.styleable.ListItemTextView_android_insetRight, 0),
+			ta.getDimensionPixelOffset(R.styleable.ListItemTextView_android_insetBottom, 0),
+		)
+	}
+
+	private fun getRippleColorFallback(context: Context): ColorStateList {
+		return context.getThemeColorStateList(android.R.attr.colorControlHighlight)
+			?: ColorStateList.valueOf(Color.TRANSPARENT)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/base/ui/widgets/SquareLayout.kt

@@ -1,4 +1,4 @@
-package org.koitharu.kotatsu.ui.common.widgets
+package org.koitharu.kotatsu.base.ui.widgets
 
 import android.content.Context
 import android.util.AttributeSet

app/src/main/java/org/koitharu/kotatsu/base/ui/widgets/WindowInsetHolder.kt

@@ -0,0 +1,72 @@
+package org.koitharu.kotatsu.base.ui.widgets
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.util.AttributeSet
+import android.view.Gravity
+import android.view.View
+import android.view.WindowInsets
+import android.widget.FrameLayout
+import android.widget.LinearLayout
+import androidx.annotation.AttrRes
+import androidx.coordinatorlayout.widget.CoordinatorLayout
+import androidx.core.view.WindowInsetsCompat
+
+class WindowInsetHolder @JvmOverloads constructor(
+	context: Context,
+	attrs: AttributeSet? = null,
+	@AttrRes defStyleAttr: Int = 0,
+) : View(context, attrs, defStyleAttr) {
+
+	private var desiredHeight = 0
+	private var desiredWidth = 0
+
+	@SuppressLint("RtlHardcoded")
+	override fun dispatchApplyWindowInsets(insets: WindowInsets): WindowInsets {
+		val barsInsets = WindowInsetsCompat.toWindowInsetsCompat(insets, this)
+			.getInsets(WindowInsetsCompat.Type.systemBars())
+		val gravity = getLayoutGravity()
+		val newWidth = when (gravity and Gravity.HORIZONTAL_GRAVITY_MASK) {
+			Gravity.LEFT -> barsInsets.left
+			Gravity.RIGHT -> barsInsets.right
+			else -> 0
+		}
+		val newHeight = when (gravity and Gravity.VERTICAL_GRAVITY_MASK) {
+			Gravity.TOP -> barsInsets.top
+			Gravity.BOTTOM -> barsInsets.bottom
+			else -> 0
+		}
+		if (newWidth != desiredWidth || newHeight != desiredHeight) {
+			desiredWidth = newWidth
+			desiredHeight = newHeight
+			requestLayout()
+		}
+		return super.dispatchApplyWindowInsets(insets)
+	}
+
+	override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
+		val widthMode = MeasureSpec.getMode(widthMeasureSpec)
+		val heightMode = MeasureSpec.getMode(heightMeasureSpec)
+		super.onMeasure(
+			if (desiredWidth == 0 || widthMode == MeasureSpec.EXACTLY) {
+				widthMeasureSpec
+			} else {
+				MeasureSpec.makeMeasureSpec(desiredWidth, widthMode)
+			},
+			if (desiredHeight == 0 || heightMode == MeasureSpec.EXACTLY) {
+				heightMeasureSpec
+			} else {
+				MeasureSpec.makeMeasureSpec(desiredHeight, heightMode)
+			},
+		)
+	}
+
+	private fun getLayoutGravity(): Int {
+		return when (val lp = layoutParams) {
+			is FrameLayout.LayoutParams -> lp.gravity
+			is LinearLayout.LayoutParams -> lp.gravity
+			is CoordinatorLayout.LayoutParams -> lp.gravity
+			else -> Gravity.NO_GRAVITY
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/browser/BrowserActivity.kt

@@ -0,0 +1,139 @@
+package org.koitharu.kotatsu.browser
+
+import android.annotation.SuppressLint
+import android.content.ActivityNotFoundException
+import android.content.Context
+import android.content.Intent
+import android.net.Uri
+import android.os.Bundle
+import android.view.Menu
+import android.view.MenuItem
+import androidx.core.graphics.Insets
+import androidx.core.view.isVisible
+import androidx.core.view.updatePadding
+import com.google.android.material.R as materialR
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.base.ui.BaseActivity
+import org.koitharu.kotatsu.core.network.UserAgentInterceptor
+import org.koitharu.kotatsu.databinding.ActivityBrowserBinding
+
+@SuppressLint("SetJavaScriptEnabled")
+class BrowserActivity : BaseActivity<ActivityBrowserBinding>(), BrowserCallback {
+
+	override fun onCreate(savedInstanceState: Bundle?) {
+		super.onCreate(savedInstanceState)
+		setContentView(ActivityBrowserBinding.inflate(layoutInflater))
+		supportActionBar?.run {
+			setDisplayHomeAsUpEnabled(true)
+			setHomeAsUpIndicator(materialR.drawable.abc_ic_clear_material)
+		}
+		with(binding.webView.settings) {
+			javaScriptEnabled = true
+			userAgentString = UserAgentInterceptor.userAgent
+		}
+		binding.webView.webViewClient = BrowserClient(this)
+		binding.webView.webChromeClient = ProgressChromeClient(binding.progressBar)
+		if (savedInstanceState != null) {
+			return
+		}
+		val url = intent?.dataString
+		if (url.isNullOrEmpty()) {
+			finishAfterTransition()
+		} else {
+			onTitleChanged(
+				intent?.getStringExtra(EXTRA_TITLE) ?: getString(R.string.loading_),
+				url
+			)
+			binding.webView.loadUrl(url)
+		}
+	}
+
+	override fun onSaveInstanceState(outState: Bundle) {
+		super.onSaveInstanceState(outState)
+		binding.webView.saveState(outState)
+	}
+
+	override fun onRestoreInstanceState(savedInstanceState: Bundle) {
+		super.onRestoreInstanceState(savedInstanceState)
+		binding.webView.restoreState(savedInstanceState)
+	}
+
+	override fun onCreateOptionsMenu(menu: Menu): Boolean {
+		menuInflater.inflate(R.menu.opt_browser, menu)
+		return super.onCreateOptionsMenu(menu)
+	}
+
+	override fun onOptionsItemSelected(item: MenuItem): Boolean = when (item.itemId) {
+		android.R.id.home -> {
+			binding.webView.stopLoading()
+			finishAfterTransition()
+			true
+		}
+		R.id.action_browser -> {
+			val intent = Intent(Intent.ACTION_VIEW)
+			intent.data = Uri.parse(binding.webView.url)
+			try {
+				startActivity(Intent.createChooser(intent, item.title))
+			} catch (_: ActivityNotFoundException) {
+			}
+			true
+		}
+		else -> super.onOptionsItemSelected(item)
+	}
+
+	override fun onBackPressed() {
+		if (binding.webView.canGoBack()) {
+			binding.webView.goBack()
+		} else {
+			super.onBackPressed()
+		}
+	}
+
+	override fun onPause() {
+		binding.webView.onPause()
+		super.onPause()
+	}
+
+	override fun onResume() {
+		super.onResume()
+		binding.webView.onResume()
+	}
+
+	override fun onDestroy() {
+		super.onDestroy()
+		binding.webView.destroy()
+	}
+
+	override fun onLoadingStateChanged(isLoading: Boolean) {
+		binding.progressBar.isVisible = isLoading
+	}
+
+	override fun onTitleChanged(title: CharSequence, subtitle: CharSequence?) {
+		this.title = title
+		supportActionBar?.subtitle = subtitle
+	}
+
+	override fun onWindowInsetsChanged(insets: Insets) {
+		binding.appbar.updatePadding(
+			top = insets.top,
+			left = insets.left,
+			right = insets.right,
+		)
+		binding.root.updatePadding(
+			left = insets.left,
+			right = insets.right,
+			bottom = insets.bottom,
+		)
+	}
+
+	companion object {
+
+		private const val EXTRA_TITLE = "title"
+
+		fun newIntent(context: Context, url: String, title: String?): Intent {
+			return Intent(context, BrowserActivity::class.java)
+				.setData(Uri.parse(url))
+				.putExtra(EXTRA_TITLE, title)
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/browser/BrowserCallback.kt

@@ -1,4 +1,4 @@
-package org.koitharu.kotatsu.ui.browser
+package org.koitharu.kotatsu.browser
 
 interface BrowserCallback {
 

app/src/main/java/org/koitharu/kotatsu/browser/BrowserClient.kt

@@ -0,0 +1,24 @@
+package org.koitharu.kotatsu.browser
+
+import android.graphics.Bitmap
+import android.webkit.WebView
+import org.koin.core.component.KoinComponent
+import org.koitharu.kotatsu.core.network.WebViewClientCompat
+
+class BrowserClient(private val callback: BrowserCallback) : WebViewClientCompat(), KoinComponent {
+
+	override fun onPageFinished(webView: WebView, url: String) {
+		super.onPageFinished(webView, url)
+		callback.onLoadingStateChanged(isLoading = false)
+	}
+
+	override fun onPageStarted(view: WebView?, url: String?, favicon: Bitmap?) {
+		super.onPageStarted(view, url, favicon)
+		callback.onLoadingStateChanged(isLoading = true)
+	}
+
+	override fun onPageCommitVisible(view: WebView, url: String?) {
+		super.onPageCommitVisible(view, url)
+		callback.onTitleChanged(view.title.orEmpty(), url)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/browser/ProgressChromeClient.kt

@@ -0,0 +1,30 @@
+package org.koitharu.kotatsu.browser
+
+import android.webkit.WebChromeClient
+import android.webkit.WebView
+import androidx.core.view.isVisible
+import com.google.android.material.progressindicator.BaseProgressIndicator
+
+private const val PROGRESS_MAX = 100
+
+class ProgressChromeClient(
+	private val progressIndicator: BaseProgressIndicator<*>,
+) : WebChromeClient() {
+
+	init {
+		progressIndicator.max = PROGRESS_MAX
+	}
+
+	override fun onProgressChanged(view: WebView?, newProgress: Int) {
+		super.onProgressChanged(view, newProgress)
+		if (!progressIndicator.isVisible) {
+			return
+		}
+		if (newProgress in 1 until PROGRESS_MAX) {
+			progressIndicator.isIndeterminate = false
+			progressIndicator.setProgressCompat(newProgress.coerceAtMost(PROGRESS_MAX), true)
+		} else {
+			progressIndicator.setIndeterminate(true)
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/browser/cloudflare/CloudFlareCallback.kt

@@ -0,0 +1,8 @@
+package org.koitharu.kotatsu.browser.cloudflare
+
+interface CloudFlareCallback {
+
+	fun onPageLoaded()
+
+	fun onCheckPassed()
+}

app/src/main/java/org/koitharu/kotatsu/browser/cloudflare/CloudFlareClient.kt

@@ -0,0 +1,45 @@
+package org.koitharu.kotatsu.browser.cloudflare
+
+import android.graphics.Bitmap
+import android.webkit.WebView
+import okhttp3.HttpUrl.Companion.toHttpUrl
+import org.koitharu.kotatsu.core.network.AndroidCookieJar
+import org.koitharu.kotatsu.core.network.WebViewClientCompat
+
+private const val CF_CLEARANCE = "cf_clearance"
+
+class CloudFlareClient(
+	private val cookieJar: AndroidCookieJar,
+	private val callback: CloudFlareCallback,
+	private val targetUrl: String
+) : WebViewClientCompat() {
+
+	private val oldClearance = getCookieValue(CF_CLEARANCE)
+
+	override fun onPageStarted(view: WebView, url: String?, favicon: Bitmap?) {
+		super.onPageStarted(view, url, favicon)
+		checkClearance()
+	}
+
+	override fun onPageCommitVisible(view: WebView?, url: String?) {
+		super.onPageCommitVisible(view, url)
+		callback.onPageLoaded()
+	}
+
+	override fun onPageFinished(view: WebView?, url: String?) {
+		super.onPageFinished(view, url)
+		callback.onPageLoaded()
+	}
+
+	private fun checkClearance() {
+		val clearance = getCookieValue(CF_CLEARANCE)
+		if (clearance != null && clearance != oldClearance) {
+			callback.onCheckPassed()
+		}
+	}
+
+	private fun getCookieValue(name: String): String? {
+		return cookieJar.loadForRequest(targetUrl.toHttpUrl())
+			.find { it.name == name }?.value
+	}
+}

app/src/main/java/org/koitharu/kotatsu/browser/cloudflare/CloudFlareDialog.kt

@@ -0,0 +1,93 @@
+package org.koitharu.kotatsu.browser.cloudflare
+
+import android.annotation.SuppressLint
+import android.content.DialogInterface
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.webkit.CookieManager
+import android.webkit.WebSettings
+import androidx.core.view.isInvisible
+import androidx.fragment.app.setFragmentResult
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import org.koin.android.ext.android.get
+import org.koitharu.kotatsu.base.ui.AlertDialogFragment
+import org.koitharu.kotatsu.core.network.UserAgentInterceptor
+import org.koitharu.kotatsu.databinding.FragmentCloudflareBinding
+import org.koitharu.kotatsu.utils.ext.stringArgument
+import org.koitharu.kotatsu.utils.ext.withArgs
+
+class CloudFlareDialog : AlertDialogFragment<FragmentCloudflareBinding>(), CloudFlareCallback {
+
+	private val url by stringArgument(ARG_URL)
+	private val pendingResult = Bundle(1)
+
+	override fun onInflateView(
+		inflater: LayoutInflater,
+		container: ViewGroup?
+	) = FragmentCloudflareBinding.inflate(inflater, container, false)
+
+	@SuppressLint("SetJavaScriptEnabled")
+	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+		super.onViewCreated(view, savedInstanceState)
+		with(binding.webView.settings) {
+			javaScriptEnabled = true
+			cacheMode = WebSettings.LOAD_DEFAULT
+			domStorageEnabled = true
+			databaseEnabled = true
+			userAgentString = UserAgentInterceptor.userAgent
+		}
+		binding.webView.webViewClient = CloudFlareClient(get(), this, url.orEmpty())
+		CookieManager.getInstance().setAcceptThirdPartyCookies(binding.webView, true)
+		if (url.isNullOrEmpty()) {
+			dismissAllowingStateLoss()
+		} else {
+			binding.webView.loadUrl(url.orEmpty())
+		}
+	}
+
+	override fun onDestroyView() {
+		binding.webView.stopLoading()
+		super.onDestroyView()
+	}
+
+	override fun onBuildDialog(builder: MaterialAlertDialogBuilder) {
+		builder.setNegativeButton(android.R.string.cancel, null)
+	}
+
+	override fun onResume() {
+		super.onResume()
+		binding.webView.onResume()
+	}
+
+	override fun onPause() {
+		binding.webView.onPause()
+		super.onPause()
+	}
+
+	override fun onDismiss(dialog: DialogInterface) {
+		setFragmentResult(TAG, pendingResult)
+		super.onDismiss(dialog)
+	}
+
+	override fun onPageLoaded() {
+		bindingOrNull()?.progressBar?.isInvisible = true
+	}
+
+	override fun onCheckPassed() {
+		pendingResult.putBoolean(EXTRA_RESULT, true)
+		dismiss()
+	}
+
+	companion object {
+
+		const val TAG = "CloudFlareDialog"
+		const val EXTRA_RESULT = "result"
+		private const val ARG_URL = "url"
+
+		fun newInstance(url: String) = CloudFlareDialog().withArgs(1) {
+			putString(ARG_URL, url)
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/core/backup/BackupEntry.kt

@@ -0,0 +1,17 @@
+package org.koitharu.kotatsu.core.backup
+
+import org.json.JSONArray
+
+class BackupEntry(
+	val name: String,
+	val data: JSONArray
+) {
+
+	companion object Names {
+
+		const val INDEX = "index"
+		const val HISTORY = "history"
+		const val CATEGORIES = "categories"
+		const val FAVOURITES = "favourites"
+	}
+}

app/src/main/java/org/koitharu/kotatsu/core/backup/BackupRepository.kt

@@ -0,0 +1,134 @@
+package org.koitharu.kotatsu.core.backup
+
+import org.json.JSONArray
+import org.json.JSONObject
+import org.koitharu.kotatsu.BuildConfig
+import org.koitharu.kotatsu.core.db.MangaDatabase
+import org.koitharu.kotatsu.core.db.entity.MangaEntity
+import org.koitharu.kotatsu.core.db.entity.TagEntity
+import org.koitharu.kotatsu.favourites.data.FavouriteCategoryEntity
+import org.koitharu.kotatsu.favourites.data.FavouriteEntity
+import org.koitharu.kotatsu.history.data.HistoryEntity
+
+private const val PAGE_SIZE = 10
+
+class BackupRepository(private val db: MangaDatabase) {
+
+	suspend fun dumpHistory(): BackupEntry {
+		var offset = 0
+		val entry = BackupEntry(BackupEntry.HISTORY, JSONArray())
+		while (true) {
+			val history = db.historyDao.findAll(offset, PAGE_SIZE)
+			if (history.isEmpty()) {
+				break
+			}
+			offset += history.size
+			for (item in history) {
+				val manga = item.manga.toJson()
+				val tags = JSONArray()
+				item.tags.forEach { tags.put(it.toJson()) }
+				manga.put("tags", tags)
+				val json = item.history.toJson()
+				json.put("manga", manga)
+				entry.data.put(json)
+			}
+		}
+		return entry
+	}
+
+	suspend fun dumpCategories(): BackupEntry {
+		val entry = BackupEntry(BackupEntry.CATEGORIES, JSONArray())
+		val categories = db.favouriteCategoriesDao.findAll()
+		for (item in categories) {
+			entry.data.put(item.toJson())
+		}
+		return entry
+	}
+
+	suspend fun dumpFavourites(): BackupEntry {
+		var offset = 0
+		val entry = BackupEntry(BackupEntry.FAVOURITES, JSONArray())
+		while (true) {
+			val favourites = db.favouritesDao.findAll(offset, PAGE_SIZE)
+			if (favourites.isEmpty()) {
+				break
+			}
+			offset += favourites.size
+			for (item in favourites) {
+				val manga = item.manga.toJson()
+				val tags = JSONArray()
+				item.tags.forEach { tags.put(it.toJson()) }
+				manga.put("tags", tags)
+				val json = item.favourite.toJson()
+				json.put("manga", manga)
+				entry.data.put(json)
+			}
+		}
+		return entry
+	}
+
+	fun createIndex(): BackupEntry {
+		val entry = BackupEntry(BackupEntry.INDEX, JSONArray())
+		val json = JSONObject()
+		json.put("app_id", BuildConfig.APPLICATION_ID)
+		json.put("app_version", BuildConfig.VERSION_CODE)
+		json.put("created_at", System.currentTimeMillis())
+		entry.data.put(json)
+		return entry
+	}
+
+	private fun MangaEntity.toJson(): JSONObject {
+		val jo = JSONObject()
+		jo.put("id", id)
+		jo.put("title", title)
+		jo.put("alt_title", altTitle)
+		jo.put("url", url)
+		jo.put("public_url", publicUrl)
+		jo.put("rating", rating)
+		jo.put("nsfw", isNsfw)
+		jo.put("cover_url", coverUrl)
+		jo.put("large_cover_url", largeCoverUrl)
+		jo.put("state", state)
+		jo.put("author", author)
+		jo.put("source", source)
+		return jo
+	}
+
+	private fun TagEntity.toJson(): JSONObject {
+		val jo = JSONObject()
+		jo.put("id", id)
+		jo.put("title", title)
+		jo.put("key", key)
+		jo.put("source", source)
+		return jo
+	}
+
+	private fun HistoryEntity.toJson(): JSONObject {
+		val jo = JSONObject()
+		jo.put("manga_id", mangaId)
+		jo.put("created_at", createdAt)
+		jo.put("updated_at", updatedAt)
+		jo.put("chapter_id", chapterId)
+		jo.put("page", page)
+		jo.put("scroll", scroll)
+		return jo
+	}
+
+	private fun FavouriteCategoryEntity.toJson(): JSONObject {
+		val jo = JSONObject()
+		jo.put("category_id", categoryId)
+		jo.put("created_at", createdAt)
+		jo.put("sort_key", sortKey)
+		jo.put("title", title)
+		jo.put("order", order)
+		return jo
+	}
+
+	private fun FavouriteEntity.toJson(): JSONObject {
+		val jo = JSONObject()
+		jo.put("manga_id", mangaId)
+		jo.put("category_id", categoryId)
+		jo.put("created_at", createdAt)
+		return jo
+	}
+}

app/src/main/java/org/koitharu/kotatsu/core/backup/BackupZipInput.kt

@@ -0,0 +1,25 @@
+package org.koitharu.kotatsu.core.backup
+
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.runInterruptible
+import okio.Closeable
+import org.json.JSONArray
+import java.io.File
+import java.util.zip.ZipFile
+
+class BackupZipInput(val file: File) : Closeable {
+
+	private val zipFile = ZipFile(file)
+
+	suspend fun getEntry(name: String): BackupEntry = runInterruptible(Dispatchers.IO) {
+		val entry = zipFile.getEntry(name)
+		val json = zipFile.getInputStream(entry).use {
+			JSONArray(it.bufferedReader().readText())
+		}
+		BackupEntry(name, json)
+	}
+
+	override fun close() {
+		zipFile.close()
+	}
+}

app/src/main/java/org/koitharu/kotatsu/core/backup/BackupZipOutput.kt

@@ -0,0 +1,45 @@
+package org.koitharu.kotatsu.core.backup
+
+import android.content.Context
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.runInterruptible
+import okio.Closeable
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.zip.ZipOutput
+import org.koitharu.kotatsu.utils.ext.format
+import java.io.File
+import java.util.*
+import java.util.zip.Deflater
+
+class BackupZipOutput(val file: File) : Closeable {
+
+	private val output = ZipOutput(file, Deflater.BEST_COMPRESSION)
+
+	suspend fun put(entry: BackupEntry) {
+		output.put(entry.name, entry.data.toString(2))
+	}
+
+	suspend fun finish() {
+		output.finish()
+	}
+
+	override fun close() {
+		output.close()
+	}
+}
+
+private const val DIR_BACKUPS = "backups"
+
+suspend fun BackupZipOutput(context: Context): BackupZipOutput = runInterruptible(Dispatchers.IO) {
+	val dir = context.run {
+		getExternalFilesDir(DIR_BACKUPS) ?: File(filesDir, DIR_BACKUPS)
+	}
+	dir.mkdirs()
+	val filename = buildString {
+		append(context.getString(R.string.app_name).replace(' ', '_').lowercase(Locale.ROOT))
+		append('_')
+		append(Date().format("ddMMyyyy"))
+		append(".bk.zip")
+	}
+	BackupZipOutput(File(dir, filename))
+}

app/src/main/java/org/koitharu/kotatsu/core/backup/CompositeResult.kt

@@ -0,0 +1,39 @@
+package org.koitharu.kotatsu.core.backup
+
+class CompositeResult {
+
+	private var successCount: Int = 0
+	private val errors = ArrayList<Throwable?>()
+
+	val size: Int
+		get() = successCount + errors.size
+
+	val failures: List<Throwable>
+		get() = errors.filterNotNull()
+
+	val isAllSuccess: Boolean
+		get() = errors.none { it != null }
+
+	val isAllFailed: Boolean
+		get() = successCount == 0 && errors.isNotEmpty()
+
+	operator fun plusAssign(result: Result<*>) {
+		when {
+			result.isSuccess -> successCount++
+			result.isFailure -> errors.add(result.exceptionOrNull())
+		}
+	}
+
+	operator fun plusAssign(other: CompositeResult) {
+		this.successCount += other.successCount
+		this.errors += other.errors
+	}
+
+	operator fun plus(other: CompositeResult): CompositeResult {
+		val result = CompositeResult()
+		result.successCount = this.successCount + other.successCount
+		result.errors.addAll(this.errors)
+		result.errors.addAll(other.errors)
+		return result
+	}
+}

app/src/main/java/org/koitharu/kotatsu/core/backup/RestoreRepository.kt

@@ -0,0 +1,114 @@
+package org.koitharu.kotatsu.core.backup
+
+import androidx.room.withTransaction
+import org.json.JSONObject
+import org.koitharu.kotatsu.core.db.MangaDatabase
+import org.koitharu.kotatsu.core.db.entity.MangaEntity
+import org.koitharu.kotatsu.core.db.entity.TagEntity
+import org.koitharu.kotatsu.favourites.data.FavouriteCategoryEntity
+import org.koitharu.kotatsu.favourites.data.FavouriteEntity
+import org.koitharu.kotatsu.history.data.HistoryEntity
+import org.koitharu.kotatsu.parsers.model.SortOrder
+import org.koitharu.kotatsu.parsers.util.json.JSONIterator
+import org.koitharu.kotatsu.parsers.util.json.getBooleanOrDefault
+import org.koitharu.kotatsu.parsers.util.json.getStringOrNull
+import org.koitharu.kotatsu.parsers.util.json.mapJSON
+
+class RestoreRepository(private val db: MangaDatabase) {
+
+	suspend fun upsertHistory(entry: BackupEntry): CompositeResult {
+		val result = CompositeResult()
+		for (item in entry.data.JSONIterator()) {
+			val mangaJson = item.getJSONObject("manga")
+			val manga = parseManga(mangaJson)
+			val tags = mangaJson.getJSONArray("tags").mapJSON {
+				parseTag(it)
+			}
+			val history = parseHistory(item)
+			result += runCatching {
+				db.withTransaction {
+					db.tagsDao.upsert(tags)
+					db.mangaDao.upsert(manga, tags)
+					db.historyDao.upsert(history)
+				}
+			}
+		}
+		return result
+	}
+
+	suspend fun upsertCategories(entry: BackupEntry): CompositeResult {
+		val result = CompositeResult()
+		for (item in entry.data.JSONIterator()) {
+			val category = parseCategory(item)
+			result += runCatching {
+				db.favouriteCategoriesDao.upsert(category)
+			}
+		}
+		return result
+	}
+
+	suspend fun upsertFavourites(entry: BackupEntry): CompositeResult {
+		val result = CompositeResult()
+		for (item in entry.data.JSONIterator()) {
+			val mangaJson = item.getJSONObject("manga")
+			val manga = parseManga(mangaJson)
+			val tags = mangaJson.getJSONArray("tags").mapJSON {
+				parseTag(it)
+			}
+			val favourite = parseFavourite(item)
+			result += runCatching {
+				db.withTransaction {
+					db.tagsDao.upsert(tags)
+					db.mangaDao.upsert(manga, tags)
+					db.favouritesDao.upsert(favourite)
+				}
+			}
+		}
+		return result
+	}
+
+	private fun parseManga(json: JSONObject) = MangaEntity(
+		id = json.getLong("id"),
+		title = json.getString("title"),
+		altTitle = json.getStringOrNull("alt_title"),
+		url = json.getString("url"),
+		publicUrl = json.getStringOrNull("public_url").orEmpty(),
+		rating = json.getDouble("rating").toFloat(),
+		isNsfw = json.getBooleanOrDefault("nsfw", false),
+		coverUrl = json.getString("cover_url"),
+		largeCoverUrl = json.getStringOrNull("large_cover_url"),
+		state = json.getStringOrNull("state"),
+		author = json.getStringOrNull("author"),
+		source = json.getString("source")
+	)
+
+	private fun parseTag(json: JSONObject) = TagEntity(
+		id = json.getLong("id"),
+		title = json.getString("title"),
+		key = json.getString("key"),
+		source = json.getString("source")
+	)
+
+	private fun parseHistory(json: JSONObject) = HistoryEntity(
+		mangaId = json.getLong("manga_id"),
+		createdAt = json.getLong("created_at"),
+		updatedAt = json.getLong("updated_at"),
+		chapterId = json.getLong("chapter_id"),
+		page = json.getInt("page"),
+		scroll = json.getDouble("scroll").toFloat()
+	)
+
+	private fun parseCategory(json: JSONObject) = FavouriteCategoryEntity(
+		categoryId = json.getInt("category_id"),
+		createdAt = json.getLong("created_at"),
+		sortKey = json.getInt("sort_key"),
+		title = json.getString("title"),
+		order = json.getStringOrNull("order") ?: SortOrder.NEWEST.name,
+	)
+
+	private fun parseFavourite(json: JSONObject) = FavouriteEntity(
+		mangaId = json.getLong("manga_id"),
+		categoryId = json.getLong("category_id"),
+		createdAt = json.getLong("created_at")
+	)
+}

app/src/main/java/org/koitharu/kotatsu/core/db/DatabaseModule.kt

@@ -0,0 +1,9 @@
+package org.koitharu.kotatsu.core.db
+
+import org.koin.android.ext.koin.androidContext
+import org.koin.dsl.module
+
+val databaseModule
+	get() = module {
+		single { MangaDatabase.create(androidContext()) }
+	}

app/src/main/java/org/koitharu/kotatsu/core/db/DatabasePrePopulateCallback.kt

@@ -4,13 +4,14 @@ import android.content.res.Resources
 import androidx.room.RoomDatabase
 import androidx.sqlite.db.SupportSQLiteDatabase
 import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.parsers.model.SortOrder
 
 class DatabasePrePopulateCallback(private val resources: Resources) : RoomDatabase.Callback() {
 
 	override fun onCreate(db: SupportSQLiteDatabase) {
 		db.execSQL(
-			"INSERT INTO favourite_categories (created_at, sort_key, title) VALUES (?,?,?)",
-			arrayOf(System.currentTimeMillis(), 1, resources.getString(R.string.read_later))
+			"INSERT INTO favourite_categories (created_at, sort_key, title, `order`) VALUES (?,?,?,?)",
+			arrayOf(System.currentTimeMillis(), 1, resources.getString(R.string.read_later), SortOrder.NEWEST.name)
 		)
 	}
 }

app/src/main/java/org/koitharu/kotatsu/core/db/FavouriteCategoriesDao.kt

@@ -1,33 +0,0 @@
-package org.koitharu.kotatsu.core.db
-
-import androidx.room.Dao
-import androidx.room.Insert
-import androidx.room.OnConflictStrategy
-import androidx.room.Query
-import org.koitharu.kotatsu.core.db.entity.FavouriteCategoryEntity
-
-@Dao
-abstract class FavouriteCategoriesDao {
-
-	@Query("SELECT * FROM favourite_categories ORDER BY sort_key")
-	abstract suspend fun findAll(): List<FavouriteCategoryEntity>
-
-	@Insert(onConflict = OnConflictStrategy.ABORT)
-	abstract suspend fun insert(category: FavouriteCategoryEntity): Long
-
-	@Query("DELETE FROM favourite_categories WHERE category_id = :id")
-	abstract suspend fun delete(id: Long)
-
-	@Query("UPDATE favourite_categories SET title = :title WHERE category_id = :id")
-	abstract suspend fun update(id: Long, title: String)
-
-	@Query("UPDATE favourite_categories SET sort_key = :sortKey WHERE category_id = :id")
-	abstract suspend fun update(id: Long, sortKey: Int)
-
-	@Query("SELECT MAX(sort_key) FROM favourite_categories")
-	protected abstract suspend fun getMaxSortKey(): Int?
-
-	suspend fun getNextSortKey(): Int {
-		return (getMaxSortKey() ?: 0) + 1
-	}
-}

app/src/main/java/org/koitharu/kotatsu/core/db/FavouritesDao.kt

@@ -1,39 +0,0 @@
-package org.koitharu.kotatsu.core.db
-
-import androidx.room.*
-import org.koitharu.kotatsu.core.db.entity.FavouriteEntity
-import org.koitharu.kotatsu.core.db.entity.FavouriteManga
-import org.koitharu.kotatsu.core.db.entity.MangaEntity
-
-@Dao
-abstract class FavouritesDao {
-
-	@Transaction
-	@Query("SELECT * FROM favourites GROUP BY manga_id ORDER BY created_at")
-	abstract suspend fun findAll(): List<FavouriteManga>
-
-	@Transaction
-	@Query("SELECT * FROM favourites GROUP BY manga_id ORDER BY created_at LIMIT :limit OFFSET :offset")
-	abstract suspend fun findAll(offset: Int, limit: Int): List<FavouriteManga>
-
-	@Transaction
-	@Query("SELECT * FROM favourites WHERE category_id = :categoryId GROUP BY manga_id ORDER BY created_at")
-	abstract suspend fun findAll(categoryId: Long): List<FavouriteManga>
-
-	@Transaction
-	@Query("SELECT * FROM favourites WHERE category_id = :categoryId GROUP BY manga_id ORDER BY created_at LIMIT :limit OFFSET :offset")
-	abstract suspend fun findAll(categoryId: Long, offset: Int, limit: Int): List<FavouriteManga>
-
-	@Query("SELECT * FROM manga WHERE manga_id IN (SELECT manga_id FROM favourites)")
-	abstract suspend fun findAllManga(): List<MangaEntity>
-
-	@Transaction
-	@Query("SELECT * FROM favourites WHERE manga_id = :id GROUP BY manga_id")
-	abstract suspend fun find(id: Long): FavouriteManga?
-
-	@Insert(onConflict = OnConflictStrategy.IGNORE)
-	abstract suspend fun add(favourite: FavouriteEntity)
-
-	@Query("DELETE FROM favourites WHERE manga_id = :mangaId AND category_id = :categoryId")
-	abstract suspend fun delete(categoryId: Long, mangaId: Long)
-}

app/src/main/java/org/koitharu/kotatsu/core/db/HistoryDao.kt

@@ -1,47 +0,0 @@
-package org.koitharu.kotatsu.core.db
-
-import androidx.room.*
-import org.koitharu.kotatsu.core.db.entity.HistoryEntity
-import org.koitharu.kotatsu.core.db.entity.HistoryWithManga
-import org.koitharu.kotatsu.core.db.entity.MangaEntity
-
-
-@Dao
-abstract class HistoryDao {
-
-    /**
-     * @hide
-     */
-    @Transaction
-    @Query("SELECT * FROM history ORDER BY updated_at DESC LIMIT :limit OFFSET :offset")
-    abstract suspend fun findAll(offset: Int, limit: Int): List<HistoryWithManga>
-
-    @Query("SELECT * FROM manga WHERE manga_id IN (SELECT manga_id FROM history)")
-    abstract suspend fun findAllManga(): List<MangaEntity>
-
-    @Query("SELECT * FROM history WHERE manga_id = :id")
-    abstract suspend fun find(id: Long): HistoryEntity?
-
-    @Query("DELETE FROM history")
-    abstract suspend fun clear()
-
-    @Insert(onConflict = OnConflictStrategy.IGNORE)
-    abstract suspend fun insert(entity: HistoryEntity): Long
-
-    @Query("UPDATE history SET page = :page, chapter_id = :chapterId, scroll = :scroll, updated_at = :updatedAt WHERE manga_id = :mangaId")
-    abstract suspend fun update(mangaId: Long, page: Int, chapterId: Long, scroll: Float, updatedAt: Long): Int
-
-    @Query("DELETE FROM history WHERE manga_id = :mangaId")
-    abstract suspend fun delete(mangaId: Long)
-
-    suspend fun update(entity: HistoryEntity) = update(entity.mangaId, entity.page, entity.chapterId, entity.scroll, entity.updatedAt)
-
-    @Transaction
-    open suspend fun upsert(entity: HistoryEntity): Boolean {
-        return if (update(entity) == 0) {
-            insert(entity)
-            true
-        } else false
-    }
-
-}

app/src/main/java/org/koitharu/kotatsu/core/db/MangaDatabase.kt

@@ -1,15 +1,28 @@
 package org.koitharu.kotatsu.core.db
 
+import android.content.Context
 import androidx.room.Database
+import androidx.room.Room
 import androidx.room.RoomDatabase
+import org.koitharu.kotatsu.core.db.dao.*
 import org.koitharu.kotatsu.core.db.entity.*
+import org.koitharu.kotatsu.core.db.migrations.*
+import org.koitharu.kotatsu.favourites.data.FavouriteCategoriesDao
+import org.koitharu.kotatsu.favourites.data.FavouriteCategoryEntity
+import org.koitharu.kotatsu.favourites.data.FavouriteEntity
+import org.koitharu.kotatsu.favourites.data.FavouritesDao
+import org.koitharu.kotatsu.history.data.HistoryDao
+import org.koitharu.kotatsu.history.data.HistoryEntity
+import org.koitharu.kotatsu.suggestions.data.SuggestionDao
+import org.koitharu.kotatsu.suggestions.data.SuggestionEntity
 
 @Database(
 	entities = [
 		MangaEntity::class, TagEntity::class, HistoryEntity::class, MangaTagsEntity::class,
 		FavouriteCategoryEntity::class, FavouriteEntity::class, MangaPrefsEntity::class,
-		TrackEntity::class, TrackLogEntity::class
-	], version = 6
+		TrackEntity::class, TrackLogEntity::class, SuggestionEntity::class
+	],
+	version = 9
 )
 abstract class MangaDatabase : RoomDatabase() {
 
@@ -28,4 +41,26 @@ abstract class MangaDatabase : RoomDatabase() {
 	abstract val tracksDao: TracksDao
 
 	abstract val trackLogsDao: TrackLogsDao
+
+	abstract val suggestionDao: SuggestionDao
+
+	companion object {
+
+		fun create(context: Context): MangaDatabase = Room.databaseBuilder(
+			context,
+			MangaDatabase::class.java,
+			"kotatsu-db"
+		).addMigrations(
+			Migration1To2(),
+			Migration2To3(),
+			Migration3To4(),
+			Migration4To5(),
+			Migration5To6(),
+			Migration6To7(),
+			Migration7To8(),
+			Migration8To9(),
+		).addCallback(
+			DatabasePrePopulateCallback(context.resources)
+		).build()
+	}
 }

app/src/main/java/org/koitharu/kotatsu/core/db/TagsDao.kt

@@ -1,26 +0,0 @@
-package org.koitharu.kotatsu.core.db
-
-import androidx.room.*
-import org.koitharu.kotatsu.core.db.entity.TagEntity
-
-@Dao
-interface TagsDao {
-
-	@Query("SELECT * FROM tags")
-	suspend fun getAllTags(): List<TagEntity>
-
-	@Insert(onConflict = OnConflictStrategy.IGNORE)
-	suspend fun insert(tag: TagEntity): Long
-
-	@Update(onConflict = OnConflictStrategy.IGNORE)
-	suspend fun update(tag: TagEntity): Int
-
-	@Transaction
-	suspend fun upsert(tags: Iterable<TagEntity>) {
-		tags.forEach { tag ->
-			if (update(tag) <= 0) {
-				insert(tag)
-			}
-		}
-	}
-}