Fix NPE during PagesCache initialization

Currently translated at 100.0% (405 of 405 strings)

Co-authored-by: Koitharu <nvasya95@gmail.com>
Translate-URL: https://hosted.weblate.org/projects/kotatsu/strings/ru/
Translation: Kotatsu/Strings

.editorconfig

@@ -5,15 +5,16 @@ charset = utf-8
 end_of_line = lf
 indent_size = 4
 indent_style = tab
-insert_final_newline = false
+insert_final_newline = true
 max_line_length = 120
 tab_width = 4
 # noinspection EditorConfigKeyCorrectness
-disabled_rules=no-wildcard-imports,no-unused-imports
+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_on_call_site = true
 ij_kotlin_allow_trailing_comma = true
 ij_kotlin_code_style_defaults = KOTLIN_OFFICIAL

.github/FUNDING.yml

@@ -1 +1,2 @@
+ko_fi: xtimms
 custom: ["https://yoomoney.ru/to/410012543938752"]

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,29 @@
+**PLEASE READ THIS**
+
+I acknowledge that:
+
+- I have updated to the latest version of the app (https://github.com/KotatsuApp/Kotatsu/releases/latest)
+- If this is an issue with a parser, that I should be opening an issue in https://github.com/KotatsuApp/kotatsu-parsers
+- I have searched the existing issues and this is new ticket **NOT** a duplicate or related to another open or closed issue
+- I will fill out the title and the information in this template
+
+Note that the issue will be automatically closed if you do not fill out the title or requested information.
+
+**DELETE THIS SECTION IF YOU HAVE READ AND ACKNOWLEDGED IT**
+
+---
+
+## Device information
+* Kotatsu version: ?
+* Android version: ?
+* Device: ?
+
+## Steps to reproduce
+1. First step
+2. Second step
+
+## Issue/Request
+?
+
+## Other details
+Additional details and attachments.

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +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
+      url: https://github.com/KotatsuApp/kotatsu-parsers/issues/new
+      about: If you have troubles with a manga parser or want to propose new manga source, please open an issue in the kotatsu-parsers repository instead

.github/ISSUE_TEMPLATE/report_bug.yml

@@ -0,0 +1,64 @@
+name: 🐞 Bug report
+description: Report a bug in Kotatsu
+labels: [bug]
+body:
+
+    - type: textarea
+      id: summary
+      attributes:
+          label: Brief summary
+          description: Please describe, what went wrong
+      validations:
+          required: true
+
+    - type: textarea
+      id: reproduce-steps
+      attributes:
+          label: Steps to reproduce
+          description: Please provide a way to reproduce this issue. Screenshots or videos can be very helpful
+          placeholder: |
+              Example:
+                1. First step
+                2. Second step
+                3. Issue here
+      validations:
+          required: false
+
+
+    - type: input
+      id: kotatsu-version
+      attributes:
+          label: Kotatsu version
+          description: You can find your Kotatsu version in **Settings → About**.
+          placeholder: |
+              Example: "3.3"
+      validations:
+          required: true
+
+    - type: input
+      id: android-version
+      attributes:
+          label: Android version
+          description: You can find this somewhere in your Android settings.
+          placeholder: |
+              Example: "12.0"
+      validations:
+          required: true
+
+    - type: input
+      id: device
+      attributes:
+          label: Device
+          description: List your device and model.
+          placeholder: |
+              Example: "LG Nexus 5X"
+      validations:
+          required: false
+
+    - type: checkboxes
+      id: acknowledgements
+      attributes:
+          label: Acknowledgements
+          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

.github/ISSUE_TEMPLATE/report_issue.yml

@@ -1,93 +0,0 @@
-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

@@ -1,5 +1,5 @@
 name: ⭐ Feature request
-description: Suggest a feature to improve Kotatsu
+description: Suggest a new idea how to improve Kotatsu
 labels: [feature request]
 body:
 
@@ -14,13 +14,6 @@ body:
       validations:
           required: true
 
-    - type: textarea
-      id: other-details
-      attributes:
-          label: Other details
-          placeholder: |
-              Additional details and attachments.
-
     - type: checkboxes
       id: acknowledgements
       attributes:
@@ -28,12 +21,4 @@ body:
           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/workflows/issue_moderator.yml

@@ -0,0 +1,29 @@
+name: Issue moderator
+
+on:
+  issues:
+    types: [opened, edited, reopened]
+  issue_comment:
+    types: [created]
+
+jobs:
+  moderate:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Moderate issues
+        uses: tachiyomiorg/issue-moderator-action@v1
+        with:
+           repo-token: ${{ secrets.GITHUB_TOKEN }}
+           auto-close-rules: |
+             [
+               {
+                 "type": "body",
+                 "regex": ".*DELETE THIS SECTION IF YOU HAVE READ AND ACKNOWLEDGED IT.*",
+                 "message": "The acknowledgment section was not removed."
+               },
+               {
+                 "type": "body",
+                 "regex": ".*\\* (Kotatsu version|Android version|Device): \\?.*",
+                 "message": "Requested information in the template was not filled out."
+               }
+             ]

.gitignore

@@ -6,11 +6,15 @@
 /.idea/dictionaries
 /.idea/modules.xml
 /.idea/misc.xml
+/.idea/discord.xml
+/.idea/compiler.xml
 /.idea/workspace.xml
 /.idea/navEditor.xml
 /.idea/assetWizardSettings.xml
 /.idea/kotlinScripting.xml
 /.idea/deploymentTargetDropDown.xml
+/.idea/androidTestResultsUserPreferences.xml
+/.idea/render.experimental.xml
 .DS_Store
 /build
 /captures

.idea/compiler.xml

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

.idea/gradle.xml

@@ -7,7 +7,7 @@
         <option name="testRunner" value="GRADLE" />
         <option name="distributionType" value="DEFAULT_WRAPPED" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleJvm" value="Android Studio default JDK" />
+        <option name="gradleJvm" value="jbr-17" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />

.idea/icon.svg

@@ -0,0 +1,287 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   inkscape:export-ydpi="39.689999"
+   inkscape:export-xdpi="39.689999"
+   inkscape:export-filename="/home/admin/Documents/projects/graphics/k/icon4.png"
+   width="512mm"
+   height="512mm"
+   viewBox="0 0 512 512.00002"
+   version="1.1"
+   id="svg8"
+   inkscape:version="1.0 (4035a4fb49, 2020-05-01)"
+   sodipodi:docname="icon4.svg">
+  <defs
+     id="defs2">
+    <filter
+       style="color-interpolation-filters:sRGB;"
+       inkscape:label="Drop Shadow"
+       id="filter1266">
+      <feFlood
+         flood-opacity="0.498039"
+         flood-color="rgb(0,0,0)"
+         result="flood"
+         id="feFlood1256" />
+      <feComposite
+         in="flood"
+         in2="SourceGraphic"
+         operator="in"
+         result="composite1"
+         id="feComposite1258" />
+      <feGaussianBlur
+         in="composite1"
+         stdDeviation="3"
+         result="blur"
+         id="feGaussianBlur1260" />
+      <feOffset
+         dx="6"
+         dy="6"
+         result="offset"
+         id="feOffset1262" />
+      <feComposite
+         in="SourceGraphic"
+         in2="offset"
+         operator="over"
+         result="composite2"
+         id="feComposite1264" />
+    </filter>
+    <filter
+       style="color-interpolation-filters:sRGB;"
+       inkscape:label="Drop Shadow"
+       id="filter1059">
+      <feFlood
+         flood-opacity="0.498039"
+         flood-color="rgb(0,0,0)"
+         result="flood"
+         id="feFlood1049" />
+      <feComposite
+         in="flood"
+         in2="SourceGraphic"
+         operator="in"
+         result="composite1"
+         id="feComposite1051" />
+      <feGaussianBlur
+         in="composite1"
+         stdDeviation="3"
+         result="blur"
+         id="feGaussianBlur1053" />
+      <feOffset
+         dx="6"
+         dy="6"
+         result="offset"
+         id="feOffset1055" />
+      <feComposite
+         in="SourceGraphic"
+         in2="offset"
+         operator="over"
+         result="composite2"
+         id="feComposite1057" />
+    </filter>
+    <filter
+       style="color-interpolation-filters:sRGB;"
+       inkscape:label="Drop Shadow"
+       id="filter1071">
+      <feFlood
+         flood-opacity="0.498039"
+         flood-color="rgb(0,0,0)"
+         result="flood"
+         id="feFlood1061" />
+      <feComposite
+         in="flood"
+         in2="SourceGraphic"
+         operator="in"
+         result="composite1"
+         id="feComposite1063" />
+      <feGaussianBlur
+         in="composite1"
+         stdDeviation="3"
+         result="blur"
+         id="feGaussianBlur1065" />
+      <feOffset
+         dx="6"
+         dy="6"
+         result="offset"
+         id="feOffset1067" />
+      <feComposite
+         in="SourceGraphic"
+         in2="offset"
+         operator="over"
+         result="composite2"
+         id="feComposite1069" />
+    </filter>
+  </defs>
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#0d47a1"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="0.175"
+     inkscape:cx="-361.03654"
+     inkscape:cy="630.78782"
+     inkscape:document-units="mm"
+     inkscape:current-layer="layer1"
+     inkscape:document-rotation="0"
+     showgrid="false"
+     inkscape:window-width="1600"
+     inkscape:window-height="838"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     fit-margin-top="20"
+     fit-margin-left="20"
+     fit-margin-right="20"
+     fit-margin-bottom="20" />
+  <metadata
+     id="metadata5">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:label="Слой 1"
+     inkscape:groupmode="layer"
+     id="layer1"
+     transform="translate(-51.12025,-104.74797)">
+    <g
+       id="g1028"
+       transform="matrix(6.9754464,0,0,6.9754464,32.42507,404.31391)" />
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+       transform="matrix(6.9754464,0,0,6.9754464,32.42507,404.31391)" />
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+</svg>

.idea/inspectionProfiles/Project_Default.xml

@@ -3,7 +3,13 @@
     <option name="myName" value="Project Default" />
     <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="FillClass" enabled="true" level="INFORMATION" enabled_by_default="true">
+      <option name="withoutDefaultValues" value="true" />
+    </inspection_tool>
     <inspection_tool class="KeySetIterationMayUseEntrySet" enabled="true" level="WARNING" enabled_by_default="true" />
+    <inspection_tool class="KotlinFunctionArgumentsHelper" enabled="true" level="INFORMATION" enabled_by_default="true">
+      <option name="withoutDefaultValues" value="true" />
+    </inspection_tool>
     <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" />

.idea/kotlinc.xml

@@ -3,4 +3,7 @@
   <component name="Kotlin2JvmCompilerArguments">
     <option name="jvmTarget" value="1.8" />
   </component>
+  <component name="KotlinJpsPluginSettings">
+    <option name="version" value="1.8.0" />
+  </component>
 </project>

.idea/ktlint.xml

@@ -1,7 +1,13 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="KtlintProjectConfiguration">
+    <enableKtlint>false</enableKtlint>
     <androidMode>true</androidMode>
     <treatAsErrors>false</treatAsErrors>
+    <disabledRules>
+      <list>
+        <option value="no-empty-first-line-in-method-block" />
+      </list>
+    </disabledRules>
   </component>
 </project>

.idea/render.experimental.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="RenderSettings">
-    <option name="quality" value="0.25" />
-  </component>
-</project>

.travis.yml

@@ -1,11 +0,0 @@
-language: android
-dist: trusty
-android:
-  components:
-    - android-30
-    - build-tools-30.0.3
-    - platform-tools-30.0.5
-    - tools
-before_install:
-  - yes | sdkmanager "platforms;android-30"
-script: ./gradlew -Dorg.gradle.jvmargs=-Xmx1536m assembleDebug lintDebug

README.md

@@ -1,8 +1,8 @@
-# Kotatsu 
+# Kotatsu
 
 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) [![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)
+![Android 5.0](https://img.shields.io/badge/android-5.0+-brightgreen) ![Kotlin](https://img.shields.io/github/languages/top/KotatsuApp/Kotatsu) ![License](https://img.shields.io/github/license/KotatsuApp/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
 
@@ -10,50 +10,49 @@ Kotatsu is a free and open source manga reader for Android.
 alt="Get it on F-Droid"
 height="80">](https://f-droid.org/packages/org.koitharu.kotatsu)
 
-Download APK from Github Releases:
+Download APK directly from GitHub:
 
-- [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)
+- **[Latest release](https://github.com/KotatsuApp/Kotatsu/releases/latest)**
 
 ### Main Features
 
 * Online manga catalogues
-* Search manga by name and genre
-* Reading history
+* Search manga by name and genres
+* Reading history and bookmarks
 * Favourites organized by user-defined categories
 * Downloading manga and reading it offline. Third-party CBZ archives also supported
-* Tablet-optimized material design UI
+* Tablet-optimized Material You UI
 * Standard and Webtoon-optimized reader
 * Notifications about new chapters with updates feed
-* Available in multiple languages
-* Password protect access to the app
+* Shikimori integration (manga tracking)
+* Password/fingerprint protect access to the app
+* History and favourites [synchronization](https://github.com/KotatsuApp/kotatsu-syncserver) across devices
 
 ### Screenshots
 
-| ![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) |
+| ![Screenshot_20200226-210337](https://github.com/KotatsuApp/Kotatsu/raw/devel/metadata/en-US/images/phoneScreenshots/1.png) | ![](https://github.com/KotatsuApp/Kotatsu/raw/devel/metadata/en-US/images/phoneScreenshots/2.png)                           | ![Screenshot_20200226-210232](https://github.com/KotatsuApp/Kotatsu/raw/devel/metadata/en-US/images/phoneScreenshots/3.png) |
+|-----------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------|
+| ![Screenshot_20200226-210405](https://github.com/KotatsuApp/Kotatsu/raw/devel/metadata/en-US/images/phoneScreenshots/4.png) | ![Screenshot_20200226-210151](https://github.com/KotatsuApp/Kotatsu/raw/devel/metadata/en-US/images/phoneScreenshots/5.png) | ![Screenshot_20200226-210223](https://github.com/KotatsuApp/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) |
-|-----------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------|
+| ![](https://github.com/KotatsuApp/Kotatsu/raw/devel/metadata/en-US/images/tenInchScreenshots/1.png) | ![](https://github.com/KotatsuApp/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>
+[<img src="https://hosted.weblate.org/widgets/kotatsu/-/287x66-white.png" alt="Translation status">](https://hosted.weblate.org/engage/kotatsu/)
 
-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> 
+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 project page](https://hosted.weblate.org/engage/kotatsu/)
 
 ### License
-[![GNU GPLv3 Image](https://www.gnu.org/graphics/gplv3-127x51.png)](http://www.gnu.org/licenses/gpl-3.0.en.html)  
 
-Kotatsu is Free Software: You can use, study share and improve it at your
-will. Specifically you can redistribute and/or modify it under the terms of the
-[GNU General Public License](https://www.gnu.org/licenses/gpl.html) as
-published by the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.  
+[![GNU GPLv3 Image](https://www.gnu.org/graphics/gplv3-127x51.png)](http://www.gnu.org/licenses/gpl-3.0.en.html)
 
-### Disclaimer
+You may copy, distribute and modify the software as long as you track changes/dates in source files. Any modifications
+to or software including (via compiler) GPL-licensed code must also be made available under the GPL along with build &
+install instructions.
 
-The developers of this application does not have any affiliation with the content providers available.
+### DMCA disclaimer
+
+The developers of this application does not have any affiliation with the content available in the app.
+It is collecting from the sources freely available through any web browser.

app/build.gradle

@@ -3,19 +3,20 @@ plugins {
 	id 'kotlin-android'
 	id 'kotlin-kapt'
 	id 'kotlin-parcelize'
+	id 'dagger.hilt.android.plugin'
 }
 
 android {
-	compileSdkVersion 32
-	buildToolsVersion '32.0.0'
-	namespace 'org.koitharu.kotatsu'
+	compileSdk = 33
+	buildToolsVersion = '33.0.1'
+	namespace = 'org.koitharu.kotatsu'
 
 	defaultConfig {
 		applicationId 'org.koitharu.kotatsu'
 		minSdkVersion 21
-		targetSdkVersion 32
-		versionCode 406
-		versionName '3.2.2'
+		targetSdkVersion 33
+		versionCode 511
+		versionName '4.3'
 		generatedDensities = []
 		testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 
@@ -24,6 +25,12 @@ android {
 				arg 'room.schemaLocation', "$projectDir/schemas".toString()
 			}
 		}
+
+		// define this values in your local.properties file
+		buildConfigField 'String', 'SHIKIMORI_CLIENT_ID', "\"${localProperty('shikimori.clientId')}\""
+		buildConfigField 'String', 'SHIKIMORI_CLIENT_SECRET', "\"${localProperty('shikimori.clientSecret')}\""
+		resValue "string", "acra_login", "${localProperty('acra.login')}"
+		resValue "string", "acra_password", "${localProperty('acra.password')}"
 	}
 	buildTypes {
 		debug {
@@ -49,71 +56,101 @@ android {
 	kotlinOptions {
 		jvmTarget = JavaVersion.VERSION_1_8.toString()
 		freeCompilerArgs += [
-				'-opt-in=kotlinx.coroutines.ExperimentalCoroutinesApi',
-				'-opt-in=kotlinx.coroutines.FlowPreview',
-				'-opt-in=kotlin.contracts.ExperimentalContracts',
+			'-opt-in=kotlin.ExperimentalStdlibApi',
+			'-opt-in=kotlinx.coroutines.ExperimentalCoroutinesApi',
+			'-opt-in=kotlinx.coroutines.FlowPreview',
+			'-opt-in=kotlin.contracts.ExperimentalContracts',
+			'-opt-in=coil.annotation.ExperimentalCoilApi',
+			'-opt-in=com.google.android.material.badge.ExperimentalBadgeUtils',
 		]
 	}
 	lint {
 		abortOnError false
-		disable 'MissingTranslation', 'PrivateResource'
+		disable 'MissingTranslation', 'PrivateResource', 'NotifyDataSetChanged'
 	}
 	testOptions {
-		unitTests.includeAndroidResources = true
-		unitTests.returnDefaultValues = false
+		unitTests.includeAndroidResources true
+		unitTests.returnDefaultValues false
+		kotlinOptions {
+			freeCompilerArgs += ['-opt-in=org.koitharu.kotatsu.parsers.InternalParsersApi']
+		}
+	}
+}
+afterEvaluate {
+	compileDebugKotlin {
+		kotlinOptions {
+			freeCompilerArgs += ['-opt-in=org.koitharu.kotatsu.parsers.InternalParsersApi']
+		}
 	}
 }
 dependencies {
-	implementation fileTree(dir: 'libs', include: ['*.jar', '*.aar'])
-	implementation('com.github.nv95:kotatsu-parsers:b495e5e457') {
+	implementation('com.github.KotatsuApp:kotatsu-parsers:cf00732023') {
 		exclude group: 'org.json', module: 'json'
 	}
 
-	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.6.1'
-	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.6.1'
+	implementation 'org.jetbrains.kotlin:kotlin-stdlib:1.8.0'
+	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.6.4'
 
-	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.appcompat:appcompat:1.6.0"
+	implementation 'androidx.core:core-ktx:1.9.0'
+	implementation 'androidx.activity:activity-ktx:1.6.1'
+	implementation 'androidx.fragment:fragment-ktx:1.5.5'
+	implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.5.1'
+	implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.5.1'
+	implementation 'androidx.lifecycle:lifecycle-service:2.5.1'
+	implementation 'androidx.lifecycle:lifecycle-process:2.5.1'
+	implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
 	implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0'
 	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'
+	implementation 'androidx.biometric:biometric-ktx:1.2.0-alpha05'
+	implementation 'com.google.android.material:material:1.8.0-rc01'
 	//noinspection LifecycleAnnotationProcessorWithJava8
-	kapt 'androidx.lifecycle:lifecycle-compiler:2.4.1'
+	kapt 'androidx.lifecycle:lifecycle-compiler:2.5.1'
 
-	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 'androidx.room:room-runtime:2.5.0'
+	implementation 'androidx.room:room-ktx:2.5.0'
+	kapt 'androidx.room:room-compiler:2.5.0'
 
-	implementation 'com.squareup.okhttp3:okhttp:4.9.3'
-	implementation 'com.squareup.okio:okio:3.0.0'
+	implementation 'com.squareup.okhttp3:okhttp:4.10.0'
+	implementation 'com.squareup.okhttp3:okhttp-dnsoverhttps:4.9.3'
+	implementation 'com.squareup.okio:okio:3.3.0'
 
 	implementation 'com.hannesdorfmann:adapterdelegates4-kotlin-dsl:4.3.2'
 	implementation 'com.hannesdorfmann:adapterdelegates4-kotlin-dsl-viewbinding:4.3.2'
 
-	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'
+	implementation 'com.google.dagger:hilt-android:2.44.2'
+	kapt 'com.google.dagger:hilt-compiler:2.44.2'
+	implementation 'androidx.hilt:hilt-work:1.0.0'
+	kapt 'androidx.hilt:hilt-compiler:1.0.0'
 
-	debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.9.1'
+	implementation 'io.coil-kt:coil-base:2.2.2'
+	implementation 'io.coil-kt:coil-svg:2.2.2'
+	implementation 'com.github.KotatsuApp:subsampling-scale-image-view:1b19231b2f'
+	implementation 'com.github.solkin:disk-lru-cache:1.4'
+	implementation 'io.noties.markwon:core:4.6.2'
+
+	implementation 'ch.acra:acra-http:5.9.7'
+	implementation 'ch.acra:acra-dialog:5.9.7'
+
+	debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.10'
 
 	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'
+	testImplementation 'org.json:json:20220924'
+	testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.4'
 
-	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'
-}
+	androidTestImplementation 'androidx.test:runner:1.5.2'
+	androidTestImplementation 'androidx.test:rules:1.5.0'
+	androidTestImplementation 'androidx.test:core-ktx:1.5.0'
+	androidTestImplementation 'androidx.test.ext:junit-ktx:1.1.5'
+
+	androidTestImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.4'
+
+	androidTestImplementation 'androidx.room:room-testing:2.5.0'
+	androidTestImplementation 'com.squareup.moshi:moshi-kotlin:1.14.0'
+
+	androidTestImplementation 'com.google.dagger:hilt-android-testing:2.44.2'
+	kaptAndroidTest 'com.google.dagger:hilt-android-compiler:2.44.2'
+}

app/proguard-rules.pro

@@ -10,4 +10,8 @@
 }
 -keep public class ** extends org.koitharu.kotatsu.base.ui.BaseFragment
 -keep class org.koitharu.kotatsu.core.db.entity.* { *; }
--dontwarn okhttp3.internal.platform.ConscryptPlatform
+-dontwarn okhttp3.internal.platform.ConscryptPlatform
+
+-keep class org.koitharu.kotatsu.core.exceptions.* { *; }
+-keep class org.koitharu.kotatsu.settings.NotificationSettingsLegacyFragment
+-keep class org.koitharu.kotatsu.core.prefs.ScreenshotsPolicy { *; }

app/sampledata/genres

@@ -0,0 +1,10 @@
+Slice of Life, Mystery
+Slice of Life, Mystery
+Psychological, Romance, Comedy, Slice of Life, Supernatural
+Sci-Fi, Comedy
+Reincarnation, Sci-Fi, Historical, Psychological, Drama, Slice of Life, Supernatural, Mystery
+Reincarnation, Sci-Fi, Historical, Psychological, Drama, Slice of Life, Supernatural, Mystery
+Reincarnation, Sci-Fi, Historical, Psychological, Drama, Slice of Life, Supernatural, Mystery
+Reincarnation, Sci-Fi, Historical, Psychological, Drama, Slice of Life, Supernatural, Mystery
+Adventure, Slice of Life, Mystery
+Adventure, Slice of Life, Mystery

app/sampledata/titles

@@ -0,0 +1,10 @@
+Forget-me-not Vol. 1
+Forget-me-not Vol. 2
+La Pomme Prisoinniere
+Momo Kanchou no Himitsu Kichi
+Omoide Emanon
+Sasurai Emanon Vol. 1
+Sasurai Emanon Vol. 2
+Sasurai Emanon Vol. 3
+Wandering Island Vol. 1
+Wandering Island Vol. 2

app/src/androidTest/assets/categories/simple.json

@@ -0,0 +1,9 @@
+{
+	"id": 4,
+	"title": "Read later",
+	"sortKey": 1,
+	"order": "NEWEST",
+	"createdAt": 1335906000000,
+	"isTrackingEnabled": true,
+	"isVisibleInLibrary": true
+}

app/src/androidTest/assets/manga/bad_ids.json

@@ -0,0 +1,163 @@
+{
+	"id": -2096681732556647985,
+	"title": "Странствия Эманон",
+	"url": "/stranstviia_emanon",
+	"publicUrl": "https://readmanga.io/stranstviia_emanon",
+	"rating": 0.9400894,
+	"isNsfw": true,
+	"coverUrl": "https://staticrm.rmr.rocks/uploads/pics/01/12/559_p.jpg",
+	"tags": [
+		{
+			"title": "Сверхъестественное",
+			"key": "supernatural",
+			"source": "READMANGA_RU"
+		},
+		{
+			"title": "Сэйнэн",
+			"key": "seinen",
+			"source": "READMANGA_RU"
+		},
+		{
+			"title": "Повседневность",
+			"key": "slice_of_life",
+			"source": "READMANGA_RU"
+		},
+		{
+			"title": "Приключения",
+			"key": "adventure",
+			"source": "READMANGA_RU"
+		}
+	],
+	"state": "FINISHED",
+	"largeCoverUrl": "https://staticrm.rmr.rocks/uploads/pics/01/12/559_o.jpg",
+	"description": "Продолжение истории о загадочной девушке по имени Эманон, которая помнит всё, что происходило на Земле за последние три миллиарда лет. \n<br>Начало истории читайте в \"Воспоминаниях Эманон\". \n<div class=\"clearfix\"></div>",
+	"chapters": [
+		{
+			"id": 1552943969433540704,
+			"name": "1 - 1",
+			"number": 1,
+			"url": "/stranstviia_emanon/vol1/1",
+			"scanlator": "Sad-Robot",
+			"uploadDate": 1342731600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 1552943969433540705,
+			"name": "1 - 2",
+			"number": 2,
+			"url": "/stranstviia_emanon/vol1/2",
+			"scanlator": "Sad-Robot",
+			"uploadDate": 1342731600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 1552943969433540706,
+			"name": "1 - 3",
+			"number": 3,
+			"url": "/stranstviia_emanon/vol1/3",
+			"scanlator": "Sad-Robot",
+			"uploadDate": 1342731600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 1552943969433540707,
+			"name": "1 - 4",
+			"number": 4,
+			"url": "/stranstviia_emanon/vol1/4",
+			"scanlator": "Sad-Robot",
+			"uploadDate": 1342731600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 1552943969433540708,
+			"name": "1 - 5",
+			"number": 5,
+			"url": "/stranstviia_emanon/vol1/5",
+			"scanlator": "Sad-Robot",
+			"uploadDate": 1342731600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 1552943969433541665,
+			"name": "2 - 1",
+			"number": 6,
+			"url": "/stranstviia_emanon/vol2/1",
+			"scanlator": "Sup!",
+			"uploadDate": 1415570400000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 1552943969433541666,
+			"name": "2 - 2",
+			"number": 7,
+			"url": "/stranstviia_emanon/vol2/2",
+			"scanlator": "Sup!",
+			"uploadDate": 1419976800000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 1552943969433541667,
+			"name": "2 - 3",
+			"number": 8,
+			"url": "/stranstviia_emanon/vol2/3",
+			"scanlator": "Sup!",
+			"uploadDate": 1427922000000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 1552943969433541668,
+			"name": "2 - 4",
+			"number": 9,
+			"url": "/stranstviia_emanon/vol2/4",
+			"scanlator": "Sup!",
+			"uploadDate": 1436907600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 1552943969433541669,
+			"name": "2 - 5",
+			"number": 10,
+			"url": "/stranstviia_emanon/vol2/5",
+			"scanlator": "Sup!",
+			"uploadDate": 1446674400000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 1552943969433541670,
+			"name": "2 - 6",
+			"number": 11,
+			"url": "/stranstviia_emanon/vol2/6",
+			"scanlator": "Sup!",
+			"uploadDate": 1451512800000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 1552943969433542626,
+			"name": "3 - 1",
+			"number": 12,
+			"url": "/stranstviia_emanon/vol3/1",
+			"scanlator": "Sup!",
+			"uploadDate": 1461618000000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 1552943969433542627,
+			"name": "3 - 2",
+			"number": 13,
+			"url": "/stranstviia_emanon/vol3/2",
+			"scanlator": "Sup!",
+			"uploadDate": 1461618000000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 1552943969433542628,
+			"name": "3 - 3",
+			"number": 14,
+			"url": "/stranstviia_emanon/vol3/3",
+			"scanlator": "",
+			"uploadDate": 1465851600000,
+			"source": "READMANGA_RU"
+		}
+	],
+	"source": "READMANGA_RU"
+}

app/src/androidTest/assets/manga/empty.json

@@ -0,0 +1,36 @@
+{
+	"id": -2096681732556647985,
+	"title": "Странствия Эманон",
+	"url": "/stranstviia_emanon",
+	"publicUrl": "https://readmanga.io/stranstviia_emanon",
+	"rating": 0.9400894,
+	"isNsfw": true,
+	"coverUrl": "https://staticrm.rmr.rocks/uploads/pics/01/12/559_p.jpg",
+	"tags": [
+		{
+			"title": "Сверхъестественное",
+			"key": "supernatural",
+			"source": "READMANGA_RU"
+		},
+		{
+			"title": "Сэйнэн",
+			"key": "seinen",
+			"source": "READMANGA_RU"
+		},
+		{
+			"title": "Повседневность",
+			"key": "slice_of_life",
+			"source": "READMANGA_RU"
+		},
+		{
+			"title": "Приключения",
+			"key": "adventure",
+			"source": "READMANGA_RU"
+		}
+	],
+	"state": "FINISHED",
+	"largeCoverUrl": "https://staticrm.rmr.rocks/uploads/pics/01/12/559_o.jpg",
+	"description": "Продолжение истории о загадочной девушке по имени Эманон, которая помнит всё, что происходило на Земле за последние три миллиарда лет. \n<br>Начало истории читайте в \"Воспоминаниях Эманон\". \n<div class=\"clearfix\"></div>",
+	"chapters": [],
+	"source": "READMANGA_RU"
+}

app/src/androidTest/assets/manga/first_chapters.json

@@ -0,0 +1,136 @@
+{
+	"id": -2096681732556647985,
+	"title": "Странствия Эманон",
+	"url": "/stranstviia_emanon",
+	"publicUrl": "https://readmanga.io/stranstviia_emanon",
+	"rating": 0.9400894,
+	"isNsfw": true,
+	"coverUrl": "https://staticrm.rmr.rocks/uploads/pics/01/12/559_p.jpg",
+	"tags": [
+		{
+			"title": "Сверхъестественное",
+			"key": "supernatural",
+			"source": "READMANGA_RU"
+		},
+		{
+			"title": "Сэйнэн",
+			"key": "seinen",
+			"source": "READMANGA_RU"
+		},
+		{
+			"title": "Повседневность",
+			"key": "slice_of_life",
+			"source": "READMANGA_RU"
+		},
+		{
+			"title": "Приключения",
+			"key": "adventure",
+			"source": "READMANGA_RU"
+		}
+	],
+	"state": "FINISHED",
+	"largeCoverUrl": "https://staticrm.rmr.rocks/uploads/pics/01/12/559_o.jpg",
+	"description": "Продолжение истории о загадочной девушке по имени Эманон, которая помнит всё, что происходило на Земле за последние три миллиарда лет. \n<br>Начало истории читайте в \"Воспоминаниях Эманон\". \n<div class=\"clearfix\"></div>",
+	"chapters": [
+		{
+			"id": 3552943969433540704,
+			"name": "1 - 1",
+			"number": 1,
+			"url": "/stranstviia_emanon/vol1/1",
+			"scanlator": "Sad-Robot",
+			"uploadDate": 1342731600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433540705,
+			"name": "1 - 2",
+			"number": 2,
+			"url": "/stranstviia_emanon/vol1/2",
+			"scanlator": "Sad-Robot",
+			"uploadDate": 1342731600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433540706,
+			"name": "1 - 3",
+			"number": 3,
+			"url": "/stranstviia_emanon/vol1/3",
+			"scanlator": "Sad-Robot",
+			"uploadDate": 1342731600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433540707,
+			"name": "1 - 4",
+			"number": 4,
+			"url": "/stranstviia_emanon/vol1/4",
+			"scanlator": "Sad-Robot",
+			"uploadDate": 1342731600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433540708,
+			"name": "1 - 5",
+			"number": 5,
+			"url": "/stranstviia_emanon/vol1/5",
+			"scanlator": "Sad-Robot",
+			"uploadDate": 1342731600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433541665,
+			"name": "2 - 1",
+			"number": 6,
+			"url": "/stranstviia_emanon/vol2/1",
+			"scanlator": "Sup!",
+			"uploadDate": 1415570400000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433541666,
+			"name": "2 - 2",
+			"number": 7,
+			"url": "/stranstviia_emanon/vol2/2",
+			"scanlator": "Sup!",
+			"uploadDate": 1419976800000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433541667,
+			"name": "2 - 3",
+			"number": 8,
+			"url": "/stranstviia_emanon/vol2/3",
+			"scanlator": "Sup!",
+			"uploadDate": 1427922000000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433541668,
+			"name": "2 - 4",
+			"number": 9,
+			"url": "/stranstviia_emanon/vol2/4",
+			"scanlator": "Sup!",
+			"uploadDate": 1436907600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433541669,
+			"name": "2 - 5",
+			"number": 10,
+			"url": "/stranstviia_emanon/vol2/5",
+			"scanlator": "Sup!",
+			"uploadDate": 1446674400000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433541670,
+			"name": "2 - 6",
+			"number": 11,
+			"url": "/stranstviia_emanon/vol2/6",
+			"scanlator": "Sup!",
+			"uploadDate": 1451512800000,
+			"source": "READMANGA_RU"
+		}
+	],
+	"source": "READMANGA_RU"
+}

app/src/androidTest/assets/manga/full.json

@@ -0,0 +1,163 @@
+{
+	"id": -2096681732556647985,
+	"title": "Странствия Эманон",
+	"url": "/stranstviia_emanon",
+	"publicUrl": "https://readmanga.io/stranstviia_emanon",
+	"rating": 0.9400894,
+	"isNsfw": true,
+	"coverUrl": "https://staticrm.rmr.rocks/uploads/pics/01/12/559_p.jpg",
+	"tags": [
+		{
+			"title": "Сверхъестественное",
+			"key": "supernatural",
+			"source": "READMANGA_RU"
+		},
+		{
+			"title": "Сэйнэн",
+			"key": "seinen",
+			"source": "READMANGA_RU"
+		},
+		{
+			"title": "Повседневность",
+			"key": "slice_of_life",
+			"source": "READMANGA_RU"
+		},
+		{
+			"title": "Приключения",
+			"key": "adventure",
+			"source": "READMANGA_RU"
+		}
+	],
+	"state": "FINISHED",
+	"largeCoverUrl": "https://staticrm.rmr.rocks/uploads/pics/01/12/559_o.jpg",
+	"description": "Продолжение истории о загадочной девушке по имени Эманон, которая помнит всё, что происходило на Земле за последние три миллиарда лет. \n<br>Начало истории читайте в \"Воспоминаниях Эманон\". \n<div class=\"clearfix\"></div>",
+	"chapters": [
+		{
+			"id": 3552943969433540704,
+			"name": "1 - 1",
+			"number": 1,
+			"url": "/stranstviia_emanon/vol1/1",
+			"scanlator": "Sad-Robot",
+			"uploadDate": 1342731600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433540705,
+			"name": "1 - 2",
+			"number": 2,
+			"url": "/stranstviia_emanon/vol1/2",
+			"scanlator": "Sad-Robot",
+			"uploadDate": 1342731600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433540706,
+			"name": "1 - 3",
+			"number": 3,
+			"url": "/stranstviia_emanon/vol1/3",
+			"scanlator": "Sad-Robot",
+			"uploadDate": 1342731600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433540707,
+			"name": "1 - 4",
+			"number": 4,
+			"url": "/stranstviia_emanon/vol1/4",
+			"scanlator": "Sad-Robot",
+			"uploadDate": 1342731600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433540708,
+			"name": "1 - 5",
+			"number": 5,
+			"url": "/stranstviia_emanon/vol1/5",
+			"scanlator": "Sad-Robot",
+			"uploadDate": 1342731600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433541665,
+			"name": "2 - 1",
+			"number": 6,
+			"url": "/stranstviia_emanon/vol2/1",
+			"scanlator": "Sup!",
+			"uploadDate": 1415570400000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433541666,
+			"name": "2 - 2",
+			"number": 7,
+			"url": "/stranstviia_emanon/vol2/2",
+			"scanlator": "Sup!",
+			"uploadDate": 1419976800000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433541667,
+			"name": "2 - 3",
+			"number": 8,
+			"url": "/stranstviia_emanon/vol2/3",
+			"scanlator": "Sup!",
+			"uploadDate": 1427922000000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433541668,
+			"name": "2 - 4",
+			"number": 9,
+			"url": "/stranstviia_emanon/vol2/4",
+			"scanlator": "Sup!",
+			"uploadDate": 1436907600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433541669,
+			"name": "2 - 5",
+			"number": 10,
+			"url": "/stranstviia_emanon/vol2/5",
+			"scanlator": "Sup!",
+			"uploadDate": 1446674400000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433541670,
+			"name": "2 - 6",
+			"number": 11,
+			"url": "/stranstviia_emanon/vol2/6",
+			"scanlator": "Sup!",
+			"uploadDate": 1451512800000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433542626,
+			"name": "3 - 1",
+			"number": 12,
+			"url": "/stranstviia_emanon/vol3/1",
+			"scanlator": "Sup!",
+			"uploadDate": 1461618000000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433542627,
+			"name": "3 - 2",
+			"number": 13,
+			"url": "/stranstviia_emanon/vol3/2",
+			"scanlator": "Sup!",
+			"uploadDate": 1461618000000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433542628,
+			"name": "3 - 3",
+			"number": 14,
+			"url": "/stranstviia_emanon/vol3/3",
+			"scanlator": "",
+			"uploadDate": 1465851600000,
+			"source": "READMANGA_RU"
+		}
+	],
+	"source": "READMANGA_RU"
+}

app/src/androidTest/assets/manga/header.json

@@ -0,0 +1,35 @@
+{
+	"id": -2096681732556647985,
+	"title": "Странствия Эманон",
+	"url": "/stranstviia_emanon",
+	"publicUrl": "https://readmanga.io/stranstviia_emanon",
+	"rating": 0.9400894,
+	"isNsfw": true,
+	"coverUrl": "https://staticrm.rmr.rocks/uploads/pics/01/12/559_p.jpg",
+	"tags": [
+		{
+			"title": "Сверхъестественное",
+			"key": "supernatural",
+			"source": "READMANGA_RU"
+		},
+		{
+			"title": "Сэйнэн",
+			"key": "seinen",
+			"source": "READMANGA_RU"
+		},
+		{
+			"title": "Повседневность",
+			"key": "slice_of_life",
+			"source": "READMANGA_RU"
+		},
+		{
+			"title": "Приключения",
+			"key": "adventure",
+			"source": "READMANGA_RU"
+		}
+	],
+	"state": "FINISHED",
+	"largeCoverUrl": "https://staticrm.rmr.rocks/uploads/pics/01/12/559_o.jpg",
+	"description": null,
+	"source": "READMANGA_RU"
+}

app/src/androidTest/assets/manga/without_middle_chapter.json

@@ -0,0 +1,154 @@
+{
+	"id": -2096681732556647985,
+	"title": "Странствия Эманон",
+	"url": "/stranstviia_emanon",
+	"publicUrl": "https://readmanga.io/stranstviia_emanon",
+	"rating": 0.9400894,
+	"isNsfw": true,
+	"coverUrl": "https://staticrm.rmr.rocks/uploads/pics/01/12/559_p.jpg",
+	"tags": [
+		{
+			"title": "Сверхъестественное",
+			"key": "supernatural",
+			"source": "READMANGA_RU"
+		},
+		{
+			"title": "Сэйнэн",
+			"key": "seinen",
+			"source": "READMANGA_RU"
+		},
+		{
+			"title": "Повседневность",
+			"key": "slice_of_life",
+			"source": "READMANGA_RU"
+		},
+		{
+			"title": "Приключения",
+			"key": "adventure",
+			"source": "READMANGA_RU"
+		}
+	],
+	"state": "FINISHED",
+	"largeCoverUrl": "https://staticrm.rmr.rocks/uploads/pics/01/12/559_o.jpg",
+	"description": "Продолжение истории о загадочной девушке по имени Эманон, которая помнит всё, что происходило на Земле за последние три миллиарда лет. \n<br>Начало истории читайте в \"Воспоминаниях Эманон\". \n<div class=\"clearfix\"></div>",
+	"chapters": [
+		{
+			"id": 3552943969433540704,
+			"name": "1 - 1",
+			"number": 1,
+			"url": "/stranstviia_emanon/vol1/1",
+			"scanlator": "Sad-Robot",
+			"uploadDate": 1342731600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433540705,
+			"name": "1 - 2",
+			"number": 2,
+			"url": "/stranstviia_emanon/vol1/2",
+			"scanlator": "Sad-Robot",
+			"uploadDate": 1342731600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433540706,
+			"name": "1 - 3",
+			"number": 3,
+			"url": "/stranstviia_emanon/vol1/3",
+			"scanlator": "Sad-Robot",
+			"uploadDate": 1342731600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433540707,
+			"name": "1 - 4",
+			"number": 4,
+			"url": "/stranstviia_emanon/vol1/4",
+			"scanlator": "Sad-Robot",
+			"uploadDate": 1342731600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433540708,
+			"name": "1 - 5",
+			"number": 5,
+			"url": "/stranstviia_emanon/vol1/5",
+			"scanlator": "Sad-Robot",
+			"uploadDate": 1342731600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433541666,
+			"name": "2 - 2",
+			"number": 7,
+			"url": "/stranstviia_emanon/vol2/2",
+			"scanlator": "Sup!",
+			"uploadDate": 1419976800000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433541667,
+			"name": "2 - 3",
+			"number": 8,
+			"url": "/stranstviia_emanon/vol2/3",
+			"scanlator": "Sup!",
+			"uploadDate": 1427922000000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433541668,
+			"name": "2 - 4",
+			"number": 9,
+			"url": "/stranstviia_emanon/vol2/4",
+			"scanlator": "Sup!",
+			"uploadDate": 1436907600000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433541669,
+			"name": "2 - 5",
+			"number": 10,
+			"url": "/stranstviia_emanon/vol2/5",
+			"scanlator": "Sup!",
+			"uploadDate": 1446674400000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433541670,
+			"name": "2 - 6",
+			"number": 11,
+			"url": "/stranstviia_emanon/vol2/6",
+			"scanlator": "Sup!",
+			"uploadDate": 1451512800000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433542626,
+			"name": "3 - 1",
+			"number": 12,
+			"url": "/stranstviia_emanon/vol3/1",
+			"scanlator": "Sup!",
+			"uploadDate": 1461618000000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433542627,
+			"name": "3 - 2",
+			"number": 13,
+			"url": "/stranstviia_emanon/vol3/2",
+			"scanlator": "Sup!",
+			"uploadDate": 1461618000000,
+			"source": "READMANGA_RU"
+		},
+		{
+			"id": 3552943969433542628,
+			"name": "3 - 3",
+			"number": 14,
+			"url": "/stranstviia_emanon/vol3/3",
+			"scanlator": "",
+			"uploadDate": 1465851600000,
+			"source": "READMANGA_RU"
+		}
+	],
+	"source": "READMANGA_RU"
+}

app/src/androidTest/java/org/koitharu/kotatsu/Instrumentation.kt

@@ -0,0 +1,9 @@
+package org.koitharu.kotatsu
+
+import android.app.Instrumentation
+import kotlin.coroutines.resume
+import kotlin.coroutines.suspendCoroutine
+
+suspend fun Instrumentation.awaitForIdle() = suspendCoroutine<Unit> { cont ->
+	waitForIdle { cont.resume(Unit) }
+}

app/src/androidTest/java/org/koitharu/kotatsu/SampleData.kt

@@ -0,0 +1,54 @@
+package org.koitharu.kotatsu
+
+import androidx.test.platform.app.InstrumentationRegistry
+import com.squareup.moshi.*
+import com.squareup.moshi.kotlin.reflect.KotlinJsonAdapterFactory
+import okio.buffer
+import okio.source
+import org.koitharu.kotatsu.core.model.FavouriteCategory
+import org.koitharu.kotatsu.parsers.model.Manga
+import java.util.*
+import kotlin.reflect.KClass
+
+object SampleData {
+
+	private val moshi = Moshi.Builder()
+		.add(DateAdapter())
+		.add(KotlinJsonAdapterFactory())
+		.build()
+
+	val manga: Manga = loadAsset("manga/header.json", Manga::class)
+
+	val mangaDetails: Manga = loadAsset("manga/full.json", Manga::class)
+
+	val tag = mangaDetails.tags.elementAt(2)
+
+	val chapter = checkNotNull(mangaDetails.chapters)[2]
+
+	val favouriteCategory: FavouriteCategory = loadAsset("categories/simple.json", FavouriteCategory::class)
+
+	fun <T : Any> loadAsset(name: String, cls: KClass<T>): T {
+		val assets = InstrumentationRegistry.getInstrumentation().context.assets
+		return assets.open(name).use {
+			moshi.adapter(cls.java).fromJson(it.source().buffer())
+		} ?: throw RuntimeException("Cannot read asset from json \"$name\"")
+	}
+
+	private class DateAdapter : JsonAdapter<Date>() {
+
+		@FromJson
+		override fun fromJson(reader: JsonReader): Date? {
+			val ms = reader.nextLong()
+			return if (ms == 0L) {
+				null
+			} else {
+				Date(ms)
+			}
+		}
+
+		@ToJson
+		override fun toJson(writer: JsonWriter, value: Date?) {
+			writer.value(value?.time ?: 0L)
+		}
+	}
+}

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

@@ -1,14 +1,12 @@
 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.Assert.assertEquals
 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 {
@@ -16,40 +14,44 @@ class MangaDatabaseTest {
 	@get:Rule
 	val helper: MigrationTestHelper = MigrationTestHelper(
 		InstrumentationRegistry.getInstrumentation(),
-		MangaDatabase::class.java.canonicalName,
-		FrameworkSQLiteOpenHelperFactory()
+		MangaDatabase::class.java,
 	)
 
+	private val migrations = databaseMigrations
+
 	@Test
-	@Throws(IOException::class)
-	fun migrateAll() {
-		helper.createDatabase(TEST_DB, 1).apply {
-			// TODO execSQL("")
-			close()
+	fun versions() {
+		assertEquals(1, migrations.first().startVersion)
+		repeat(migrations.size) { i ->
+			assertEquals(i + 1, migrations[i].startVersion)
+			assertEquals(i + 2, migrations[i].endVersion)
 		}
+		assertEquals(DATABASE_VERSION, migrations.last().endVersion)
+	}
+
+	@Test
+	fun migrateAll() {
+		helper.createDatabase(TEST_DB, 1).close()
 		for (migration in migrations) {
 			helper.runMigrationsAndValidate(
 				TEST_DB,
 				migration.endVersion,
 				true,
-				migration
-			)
+				migration,
+			).close()
 		}
 	}
 
+	@Test
+	fun prePopulate() {
+		val resources = InstrumentationRegistry.getInstrumentation().targetContext.resources
+		helper.createDatabase(TEST_DB, DATABASE_VERSION).use {
+			DatabasePrePopulateCallback(resources).onCreate(it)
+		}
+	}
 
 	private companion object {
 
 		const val TEST_DB = "test-db"
-
-		val migrations = arrayOf(
-			Migration1To2(),
-			Migration2To3(),
-			Migration3To4(),
-			Migration4To5(),
-			Migration5To6(),
-			Migration6To7(),
-			Migration7To8(),
-		)
 	}
-}
+}

app/src/androidTest/java/org/koitharu/kotatsu/core/os/ShortcutsUpdaterTest.kt

@@ -0,0 +1,77 @@
+package org.koitharu.kotatsu.core.os
+
+import android.content.pm.ShortcutInfo
+import android.content.pm.ShortcutManager
+import android.os.Build
+import androidx.core.content.getSystemService
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.platform.app.InstrumentationRegistry
+import dagger.hilt.android.testing.HiltAndroidRule
+import dagger.hilt.android.testing.HiltAndroidTest
+import javax.inject.Inject
+import kotlinx.coroutines.test.runTest
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
+import org.junit.Before
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.koitharu.kotatsu.SampleData
+import org.koitharu.kotatsu.awaitForIdle
+import org.koitharu.kotatsu.core.db.MangaDatabase
+import org.koitharu.kotatsu.history.domain.HistoryRepository
+
+@HiltAndroidTest
+@RunWith(AndroidJUnit4::class)
+class ShortcutsUpdaterTest {
+
+	@get:Rule
+	var hiltRule = HiltAndroidRule(this)
+
+	@Inject
+	lateinit var historyRepository: HistoryRepository
+
+	@Inject
+	lateinit var shortcutsUpdater: ShortcutsUpdater
+
+	@Inject
+	lateinit var database: MangaDatabase
+
+	@Before
+	fun setUp() {
+		hiltRule.inject()
+		database.clearAllTables()
+	}
+
+	@Test
+	fun testUpdateShortcuts() = runTest {
+		if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N_MR1) {
+			return@runTest
+		}
+		awaitUpdate()
+		assertTrue(getShortcuts().isEmpty())
+		historyRepository.addOrUpdate(
+			manga = SampleData.manga,
+			chapterId = SampleData.chapter.id,
+			page = 4,
+			scroll = 2,
+			percent = 0.3f,
+		)
+		awaitUpdate()
+
+		val shortcuts = getShortcuts()
+		assertEquals(1, shortcuts.size)
+	}
+
+	private fun getShortcuts(): List<ShortcutInfo> {
+		val context = InstrumentationRegistry.getInstrumentation().targetContext
+		val manager = checkNotNull(context.getSystemService<ShortcutManager>())
+		return manager.dynamicShortcuts.filterNot { it.id == "com.squareup.leakcanary.dynamic_shortcut" }
+	}
+
+	private suspend fun awaitUpdate() {
+		val instrumentation = InstrumentationRegistry.getInstrumentation()
+		instrumentation.awaitForIdle()
+		shortcutsUpdater.await()
+	}
+}

app/src/androidTest/java/org/koitharu/kotatsu/settings/backup/AppBackupAgentTest.kt

@@ -0,0 +1,108 @@
+package org.koitharu.kotatsu.settings.backup
+
+import android.content.res.AssetManager
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.platform.app.InstrumentationRegistry
+import dagger.hilt.android.testing.HiltAndroidRule
+import dagger.hilt.android.testing.HiltAndroidTest
+import java.io.File
+import javax.inject.Inject
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.test.runTest
+import org.junit.Assert.*
+import org.junit.Before
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.koitharu.kotatsu.SampleData
+import org.koitharu.kotatsu.core.backup.BackupRepository
+import org.koitharu.kotatsu.core.db.MangaDatabase
+import org.koitharu.kotatsu.core.db.entity.toMangaTags
+import org.koitharu.kotatsu.favourites.domain.FavouritesRepository
+import org.koitharu.kotatsu.history.domain.HistoryRepository
+
+@HiltAndroidTest
+@RunWith(AndroidJUnit4::class)
+class AppBackupAgentTest {
+
+	@get:Rule
+	var hiltRule = HiltAndroidRule(this)
+
+	@Inject
+	lateinit var historyRepository: HistoryRepository
+
+	@Inject
+	lateinit var favouritesRepository: FavouritesRepository
+
+	@Inject
+	lateinit var backupRepository: BackupRepository
+
+	@Inject
+	lateinit var database: MangaDatabase
+
+	@Before
+	fun setUp() {
+		hiltRule.inject()
+		database.clearAllTables()
+	}
+
+	@Test
+	fun backupAndRestore() = runTest {
+		val category = favouritesRepository.createCategory(
+			title = SampleData.favouriteCategory.title,
+			sortOrder = SampleData.favouriteCategory.order,
+			isTrackerEnabled = SampleData.favouriteCategory.isTrackingEnabled,
+		)
+		favouritesRepository.addToCategory(categoryId = category.id, mangas = listOf(SampleData.manga))
+		historyRepository.addOrUpdate(
+			manga = SampleData.mangaDetails,
+			chapterId = SampleData.mangaDetails.chapters!![2].id,
+			page = 3,
+			scroll = 40,
+			percent = 0.2f,
+		)
+		val history = checkNotNull(historyRepository.getOne(SampleData.manga))
+
+		val agent = AppBackupAgent()
+		val backup = agent.createBackupFile(
+			context = InstrumentationRegistry.getInstrumentation().targetContext,
+			repository = backupRepository,
+		)
+
+		database.clearAllTables()
+		assertTrue(favouritesRepository.getAllManga().isEmpty())
+		assertNull(historyRepository.getLastOrNull())
+
+		backup.inputStream().use {
+			agent.restoreBackupFile(it.fd, backup.length(), backupRepository)
+		}
+
+		assertEquals(category, favouritesRepository.getCategory(category.id))
+		assertEquals(history, historyRepository.getOne(SampleData.manga))
+		assertEquals(listOf(SampleData.manga), favouritesRepository.getManga(category.id))
+
+		val allTags = database.tagsDao.findTags(SampleData.tag.source.name).toMangaTags()
+		assertTrue(SampleData.tag in allTags)
+	}
+
+	@Test
+	fun restoreOldBackup() {
+		val agent = AppBackupAgent()
+		val backup = File.createTempFile("backup_", ".tmp")
+		InstrumentationRegistry.getInstrumentation().context.assets
+			.open("kotatsu_test.bak", AssetManager.ACCESS_STREAMING)
+			.use { input ->
+				backup.outputStream().use { output ->
+					input.copyTo(output)
+				}
+			}
+		backup.inputStream().use {
+			agent.restoreBackupFile(it.fd, backup.length(), backupRepository)
+		}
+		runTest {
+			assertEquals(6, historyRepository.observeAll().first().size)
+			assertEquals(2, favouritesRepository.observeCategories().first().size)
+			assertEquals(15, favouritesRepository.getAllManga().size)
+		}
+	}
+}

app/src/androidTest/java/org/koitharu/kotatsu/tracker/domain/TrackerTest.kt

@@ -0,0 +1,198 @@
+package org.koitharu.kotatsu.tracker.domain
+
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import dagger.hilt.android.testing.HiltAndroidRule
+import dagger.hilt.android.testing.HiltAndroidTest
+import javax.inject.Inject
+import junit.framework.TestCase.*
+import kotlinx.coroutines.test.runTest
+import org.junit.Before
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.koitharu.kotatsu.SampleData
+import org.koitharu.kotatsu.base.domain.MangaDataRepository
+import org.koitharu.kotatsu.parsers.model.Manga
+
+@HiltAndroidTest
+@RunWith(AndroidJUnit4::class)
+class TrackerTest {
+
+	@get:Rule
+	var hiltRule = HiltAndroidRule(this)
+
+	@Inject
+	lateinit var repository: TrackingRepository
+
+	@Inject
+	lateinit var dataRepository: MangaDataRepository
+
+	@Inject
+	lateinit var tracker: Tracker
+
+	@Before
+	fun setUp() {
+		hiltRule.inject()
+	}
+
+	@Test
+	fun noUpdates() = runTest {
+		val manga = loadManga("full.json")
+		tracker.deleteTrack(manga.id)
+
+		tracker.checkUpdates(manga, commit = true).apply {
+			assertFalse(isValid)
+			assert(newChapters.isEmpty())
+		}
+		assertEquals(0, repository.getNewChaptersCount(manga.id))
+		tracker.checkUpdates(manga, commit = true).apply {
+			assertTrue(isValid)
+			assert(newChapters.isEmpty())
+		}
+		assertEquals(0, repository.getNewChaptersCount(manga.id))
+	}
+
+	@Test
+	fun hasUpdates() = runTest {
+		val mangaFirst = loadManga("first_chapters.json")
+		val mangaFull = loadManga("full.json")
+		tracker.deleteTrack(mangaFirst.id)
+
+		tracker.checkUpdates(mangaFirst, commit = true).apply {
+			assertFalse(isValid)
+			assert(newChapters.isEmpty())
+		}
+		assertEquals(0, repository.getNewChaptersCount(mangaFirst.id))
+		tracker.checkUpdates(mangaFull, commit = true).apply {
+			assertTrue(isValid)
+			assertEquals(3, newChapters.size)
+		}
+		assertEquals(3, repository.getNewChaptersCount(mangaFirst.id))
+		tracker.checkUpdates(mangaFull, commit = true).apply {
+			assertTrue(isValid)
+			assert(newChapters.isEmpty())
+		}
+		assertEquals(3, repository.getNewChaptersCount(mangaFirst.id))
+	}
+
+	@Test
+	fun badIds() = runTest {
+		val mangaFirst = loadManga("first_chapters.json")
+		val mangaBad = loadManga("bad_ids.json")
+		tracker.deleteTrack(mangaFirst.id)
+
+		tracker.checkUpdates(mangaFirst, commit = true).apply {
+			assertFalse(isValid)
+			assert(newChapters.isEmpty())
+		}
+		assertEquals(0, repository.getNewChaptersCount(mangaFirst.id))
+		tracker.checkUpdates(mangaBad, commit = true).apply {
+			assertFalse(isValid)
+			assert(newChapters.isEmpty())
+		}
+		assertEquals(0, repository.getNewChaptersCount(mangaFirst.id))
+		tracker.checkUpdates(mangaFirst, commit = true).apply {
+			assertFalse(isValid)
+			assert(newChapters.isEmpty())
+		}
+		assertEquals(0, repository.getNewChaptersCount(mangaFirst.id))
+	}
+
+	@Test
+	fun badIds2() = runTest {
+		val mangaFirst = loadManga("first_chapters.json")
+		val mangaBad = loadManga("bad_ids.json")
+		val mangaFull = loadManga("full.json")
+		tracker.deleteTrack(mangaFirst.id)
+
+		tracker.checkUpdates(mangaFirst, commit = true).apply {
+			assertFalse(isValid)
+			assert(newChapters.isEmpty())
+		}
+		assertEquals(0, repository.getNewChaptersCount(mangaFirst.id))
+		tracker.checkUpdates(mangaFull, commit = true).apply {
+			assertTrue(isValid)
+			assertEquals(3, newChapters.size)
+		}
+		assertEquals(3, repository.getNewChaptersCount(mangaFull.id))
+		tracker.checkUpdates(mangaBad, commit = true).apply {
+			assertFalse(isValid)
+			assert(newChapters.isEmpty())
+		}
+		assertEquals(0, repository.getNewChaptersCount(mangaFirst.id))
+	}
+
+	@Test
+	fun fullReset() = runTest {
+		val mangaFull = loadManga("full.json")
+		val mangaFirst = loadManga("first_chapters.json")
+		val mangaEmpty = loadManga("empty.json")
+		tracker.deleteTrack(mangaFull.id)
+
+		assertEquals(0, repository.getNewChaptersCount(mangaFull.id))
+		tracker.checkUpdates(mangaFull, commit = true).apply {
+			assertFalse(isValid)
+			assert(newChapters.isEmpty())
+		}
+		assertEquals(0, repository.getNewChaptersCount(mangaFull.id))
+		tracker.checkUpdates(mangaEmpty, commit = true).apply {
+			assert(newChapters.isEmpty())
+		}
+		assertEquals(0, repository.getNewChaptersCount(mangaFull.id))
+		tracker.checkUpdates(mangaFirst, commit = true).apply {
+			assertFalse(isValid)
+			assert(newChapters.isEmpty())
+		}
+		assertEquals(0, repository.getNewChaptersCount(mangaFull.id))
+		tracker.checkUpdates(mangaFull, commit = true).apply {
+			assertTrue(isValid)
+			assertEquals(3, newChapters.size)
+		}
+		assertEquals(3, repository.getNewChaptersCount(mangaFull.id))
+		tracker.checkUpdates(mangaEmpty, commit = true).apply {
+			assertFalse(isValid)
+			assert(newChapters.isEmpty())
+		}
+		assertEquals(0, repository.getNewChaptersCount(mangaFull.id))
+	}
+
+	@Test
+	fun syncWithHistory() = runTest {
+		val mangaFull = loadManga("full.json")
+		val mangaFirst = loadManga("first_chapters.json")
+		tracker.deleteTrack(mangaFull.id)
+
+		tracker.checkUpdates(mangaFirst, commit = true).apply {
+			assertFalse(isValid)
+			assert(newChapters.isEmpty())
+		}
+		assertEquals(0, repository.getNewChaptersCount(mangaFirst.id))
+		tracker.checkUpdates(mangaFull, commit = true).apply {
+			assertTrue(isValid)
+			assertEquals(3, newChapters.size)
+		}
+		assertEquals(3, repository.getNewChaptersCount(mangaFirst.id))
+
+		var chapter = requireNotNull(mangaFull.chapters).run { get(lastIndex - 1) }
+		repository.syncWithHistory(mangaFull, chapter.id)
+
+		assertEquals(1, repository.getNewChaptersCount(mangaFirst.id))
+
+		chapter = requireNotNull(mangaFull.chapters).run { get(lastIndex) }
+		repository.syncWithHistory(mangaFull, chapter.id)
+
+		assertEquals(0, repository.getNewChaptersCount(mangaFirst.id))
+
+		tracker.checkUpdates(mangaFull, commit = true).apply {
+			assertTrue(isValid)
+			assert(newChapters.isEmpty())
+		}
+		assertEquals(0, repository.getNewChaptersCount(mangaFirst.id))
+	}
+
+	private suspend fun loadManga(name: String): Manga {
+		val manga = SampleData.loadAsset("manga/$name", Manga::class)
+		dataRepository.storeManga(manga)
+		return manga
+	}
+}

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

@@ -25,7 +25,7 @@ class DummyParser(override val context: MangaLoaderContext) : MangaParser(MangaS
 		offset: Int,
 		query: String?,
 		tags: Set<MangaTag>?,
-		sortOrder: SortOrder?
+		sortOrder: SortOrder,
 	): List<Manga> {
 		TODO("Not yet implemented")
 	}

app/src/debug/java/org/koitharu/kotatsu/utils/ext/DebugExt.kt

@@ -0,0 +1,3 @@
+package org.koitharu.kotatsu.utils.ext
+
+fun Throwable.printStackTraceDebug() = printStackTrace()

app/src/main/AndroidManifest.xml

@@ -9,6 +9,15 @@
 	<uses-permission android:name="android.permission.WAKE_LOCK" />
 	<uses-permission android:name="android.permission.VIBRATE" />
 	<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
+	<uses-permission android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS" />
+	<uses-permission android:name="android.permission.GET_ACCOUNTS" />
+	<uses-permission android:name="android.permission.MANAGE_ACCOUNTS" />
+	<uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS" />
+	<uses-permission android:name="android.permission.USE_CREDENTIALS" />
+	<uses-permission android:name="android.permission.READ_SYNC_STATS" />
+	<uses-permission android:name="android.permission.READ_SYNC_SETTINGS" />
+	<uses-permission android:name="android.permission.WRITE_SYNC_SETTINGS" />
+	<uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
 
 	<application
 		android:name="org.koitharu.kotatsu.KotatsuApp"
@@ -19,6 +28,8 @@
 		android:fullBackupOnly="true"
 		android:icon="@mipmap/ic_launcher"
 		android:label="@string/app_name"
+		android:largeHeap="true"
+		android:localeConfig="@xml/locales"
 		android:networkSecurityConfig="@xml/network_security_config"
 		android:roundIcon="@mipmap/ic_launcher_round"
 		android:supportsRtl="true"
@@ -53,11 +64,37 @@
 		<activity
 			android:name="org.koitharu.kotatsu.search.ui.SearchActivity"
 			android:label="@string/search" />
-		<activity android:name="org.koitharu.kotatsu.search.ui.MangaListActivity"
+		<activity
+			android:name="org.koitharu.kotatsu.search.ui.MangaListActivity"
 			android:label="@string/search_manga" />
+		<activity
+			android:name="org.koitharu.kotatsu.history.ui.HistoryActivity"
+			android:label="@string/history" />
+		<activity
+			android:name="org.koitharu.kotatsu.tracker.ui.updates.UpdatesActivity"
+			android:label="@string/updates" />
+		<activity
+			android:name="org.koitharu.kotatsu.favourites.ui.FavouritesActivity"
+			android:label="@string/favourites" />
+		<activity
+			android:name="org.koitharu.kotatsu.bookmarks.ui.BookmarksActivity"
+			android:label="@string/bookmarks" />
+		<activity
+			android:name="org.koitharu.kotatsu.suggestions.ui.SuggestionsActivity"
+			android:label="@string/suggestions" />
 		<activity
 			android:name="org.koitharu.kotatsu.settings.SettingsActivity"
-			android:label="@string/settings" />
+			android:exported="true"
+			android:label="@string/settings">
+			<intent-filter>
+				<action android:name="android.intent.action.VIEW" />
+
+				<category android:name="android.intent.category.DEFAULT" />
+				<category android:name="android.intent.category.BROWSABLE" />
+
+				<data android:scheme="kotatsu" />
+			</intent-filter>
+		</activity>
 		<activity
 			android:name="org.koitharu.kotatsu.browser.BrowserActivity"
 			android:configChanges="orientation|screenSize|screenLayout|keyboardHidden"
@@ -67,13 +104,8 @@
 			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"
-			android:windowSoftInputMode="stateAlwaysHidden" />
-		<activity
-			android:name="org.koitharu.kotatsu.favourites.ui.categories.CategoriesActivity"
-			android:label="@string/favourites_categories"
+			android:name="org.koitharu.kotatsu.favourites.ui.categories.FavouriteCategoriesActivity"
+			android:label="@string/favourites"
 			android:windowSoftInputMode="stateAlwaysHidden" />
 		<activity
 			android:name="org.koitharu.kotatsu.widget.shelf.ShelfConfigActivity"
@@ -84,7 +116,7 @@
 			</intent-filter>
 		</activity>
 		<activity
-			android:name="org.koitharu.kotatsu.search.ui.global.GlobalSearchActivity"
+			android:name="org.koitharu.kotatsu.search.ui.multi.MultiSearchActivity"
 			android:label="@string/search" />
 		<activity
 			android:name="org.koitharu.kotatsu.main.ui.protect.ProtectActivity"
@@ -95,20 +127,70 @@
 			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"/>
+			android:label="@string/downloads"
+			android:launchMode="singleTop" />
+		<activity android:name="org.koitharu.kotatsu.image.ui.ImageActivity" />
+		<activity android:name="org.koitharu.kotatsu.favourites.ui.categories.edit.FavouritesCategoryEditActivity" />
+		<activity
+			android:name="org.koitharu.kotatsu.sync.ui.SyncAuthActivity"
+			android:label="@string/sync" />
+		<activity
+			android:name="org.koitharu.kotatsu.reader.ui.colorfilter.ColorFilterConfigActivity"
+			android:label="@string/color_correction" />
+		<activity
+			android:name="org.koitharu.kotatsu.shelf.ui.config.ShelfSettingsActivity"
+			android:label="@string/settings" />
 
 		<service
 			android:name="org.koitharu.kotatsu.download.ui.service.DownloadService"
-			android:foregroundServiceType="dataSync" />
+			android:foregroundServiceType="dataSync"
+			android:stopWithTask="false" />
 		<service android:name="org.koitharu.kotatsu.local.ui.LocalChaptersRemoveService" />
+		<service android:name="org.koitharu.kotatsu.local.ui.ImportService" />
 		<service
 			android:name="org.koitharu.kotatsu.widget.shelf.ShelfWidgetService"
 			android:permission="android.permission.BIND_REMOTEVIEWS" />
 		<service
 			android:name="org.koitharu.kotatsu.widget.recent.RecentWidgetService"
 			android:permission="android.permission.BIND_REMOTEVIEWS" />
+		<service
+			android:name="org.koitharu.kotatsu.sync.ui.SyncAuthenticatorService"
+			android:exported="true"
+			tools:ignore="ExportedService">
+			<intent-filter>
+				<action android:name="android.accounts.AccountAuthenticator" />
+			</intent-filter>
+			<meta-data
+				android:name="android.accounts.AccountAuthenticator"
+				android:resource="@xml/authenticator_sync" />
+		</service>
+		<service
+			android:name="org.koitharu.kotatsu.sync.ui.favourites.FavouritesSyncService"
+			android:exported="false"
+			android:label="@string/favourites"
+			android:process=":sync">
+			<intent-filter>
+				<action android:name="android.content.SyncAdapter" />
+			</intent-filter>
+			<meta-data
+				android:name="android.content.SyncAdapter"
+				android:resource="@xml/sync_favourites" />
+		</service>
+		<service
+			android:name="org.koitharu.kotatsu.sync.ui.history.HistorySyncService"
+			android:exported="false"
+			android:label="@string/history"
+			android:process=":sync">
+			<intent-filter>
+				<action android:name="android.content.SyncAdapter" />
+			</intent-filter>
+			<meta-data
+				android:name="android.content.SyncAdapter"
+				android:resource="@xml/sync_history" />
+		</service>
+		<service
+			android:name="org.koitharu.kotatsu.details.service.MangaPrefetchService"
+			android:exported="false" />
 
 		<provider
 			android:name="org.koitharu.kotatsu.search.ui.MangaSuggestionsProvider"
@@ -123,6 +205,22 @@
 				android:name="android.support.FILE_PROVIDER_PATHS"
 				android:resource="@xml/filepaths" />
 		</provider>
+		<provider
+			android:name="org.koitharu.kotatsu.sync.ui.favourites.FavouritesSyncProvider"
+			android:authorities="org.koitharu.kotatsu.favourites"
+			android:exported="false"
+			android:label="@string/favourites"
+			android:syncable="true" />
+		<provider
+			android:name="org.koitharu.kotatsu.sync.ui.history.HistorySyncProvider"
+			android:authorities="org.koitharu.kotatsu.history"
+			android:exported="false"
+			android:label="@string/history"
+			android:syncable="true" />
+		<provider
+			android:name="androidx.startup.InitializationProvider"
+			android:authorities="${applicationId}.androidx-startup"
+			tools:node="remove" />
 
 		<receiver
 			android:name="org.koitharu.kotatsu.widget.shelf.ShelfWidgetProvider"
@@ -153,7 +251,10 @@
 		<meta-data
 			android:name="android.webkit.WebView.MetricsOptOut"
 			android:value="true" />
+		<meta-data
+			android:name="com.samsung.android.icon_container.has_icon_container"
+			android:value="@bool/com_samsung_android_icon_container_has_icon_container" />
 
 	</application>
 
-</manifest>
+</manifest>

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

@@ -1,73 +1,114 @@
 package org.koitharu.kotatsu
 
 import android.app.Application
+import android.content.Context
 import android.os.StrictMode
+import androidx.annotation.WorkerThread
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.fragment.app.strictmode.FragmentStrictMode
-import org.koin.android.ext.android.get
-import org.koin.android.ext.koin.androidContext
-import org.koin.core.context.startKoin
-import org.koitharu.kotatsu.core.db.databaseModule
-import org.koitharu.kotatsu.core.github.githubModule
-import org.koitharu.kotatsu.core.network.networkModule
+import androidx.hilt.work.HiltWorkerFactory
+import androidx.room.InvalidationTracker
+import androidx.work.Configuration
+import dagger.hilt.android.HiltAndroidApp
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import org.acra.ReportField
+import org.acra.config.dialog
+import org.acra.config.httpSender
+import org.acra.data.StringFormat
+import org.acra.ktx.initAcra
+import org.acra.sender.HttpSender
+import org.koitharu.kotatsu.core.db.MangaDatabase
 import org.koitharu.kotatsu.core.prefs.AppSettings
-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
+import org.koitharu.kotatsu.utils.ext.processLifecycleScope
+import javax.inject.Inject
 
-class KotatsuApp : Application() {
+@HiltAndroidApp
+class KotatsuApp : Application(), Configuration.Provider {
+
+	@Inject
+	lateinit var databaseObservers: Set<@JvmSuppressWildcards InvalidationTracker.Observer>
+
+	@Inject
+	lateinit var activityLifecycleCallbacks: Set<@JvmSuppressWildcards ActivityLifecycleCallbacks>
+
+	@Inject
+	lateinit var database: MangaDatabase
+
+	@Inject
+	lateinit var settings: AppSettings
+
+	@Inject
+	lateinit var workerFactory: HiltWorkerFactory
 
 	override fun onCreate() {
 		super.onCreate()
 		if (BuildConfig.DEBUG) {
 			enableStrictMode()
 		}
-		initKoin()
-		Thread.setDefaultUncaughtExceptionHandler(AppCrashHandler(applicationContext))
-		AppCompatDelegate.setDefaultNightMode(get<AppSettings>().theme)
-		registerActivityLifecycleCallbacks(get<AppProtectHelper>())
-		val widgetUpdater = WidgetUpdater(applicationContext)
-		widgetUpdater.subscribeToFavourites(get())
-		widgetUpdater.subscribeToHistory(get())
+		AppCompatDelegate.setDefaultNightMode(settings.theme)
+		AppCompatDelegate.setApplicationLocales(settings.appLocales)
+		setupActivityLifecycleCallbacks()
+		processLifecycleScope.launch(Dispatchers.Default) {
+			setupDatabaseObservers()
+		}
 	}
 
-	private fun initKoin() {
-		startKoin {
-			androidContext(this@KotatsuApp)
-			modules(
-				networkModule,
-				databaseModule,
-				githubModule,
-				uiModule,
-				mainModule,
-				searchModule,
-				localModule,
-				favouritesModule,
-				historyModule,
-				remoteListModule,
-				detailsModule,
-				trackerModule,
-				settingsModule,
-				readerModule,
-				appWidgetModule,
-				suggestionsModule,
+	override fun attachBaseContext(base: Context?) {
+		super.attachBaseContext(base)
+		initAcra {
+			buildConfigClass = BuildConfig::class.java
+			reportFormat = StringFormat.JSON
+			excludeMatchingSharedPreferencesKeys = listOf(
+				"sources_\\w+",
 			)
+			httpSender {
+				uri = getString(R.string.url_error_report)
+				basicAuthLogin = getString(R.string.acra_login)
+				basicAuthPassword = getString(R.string.acra_password)
+				httpMethod = HttpSender.Method.POST
+			}
+			reportContent = listOf(
+				ReportField.PACKAGE_NAME,
+				ReportField.INSTALLATION_ID,
+				ReportField.APP_VERSION_CODE,
+				ReportField.APP_VERSION_NAME,
+				ReportField.ANDROID_VERSION,
+				ReportField.PHONE_MODEL,
+				ReportField.STACK_TRACE,
+				ReportField.CRASH_CONFIGURATION,
+				ReportField.SHARED_PREFERENCES,
+			)
+			dialog {
+				text = getString(R.string.crash_text)
+				title = getString(R.string.error_occurred)
+				positiveButtonText = getString(R.string.send)
+				resIcon = R.drawable.ic_alert_outline
+				resTheme = android.R.style.Theme_Material_Light_Dialog_Alert
+			}
+		}
+	}
+
+	override fun getWorkManagerConfiguration(): Configuration {
+		return Configuration.Builder()
+			.setWorkerFactory(workerFactory)
+			.build()
+	}
+
+	@WorkerThread
+	private fun setupDatabaseObservers() {
+		val tracker = database.invalidationTracker
+		databaseObservers.forEach {
+			tracker.addObserver(it)
+		}
+	}
+
+	private fun setupActivityLifecycleCallbacks() {
+		activityLifecycleCallbacks.forEach {
+			registerActivityLifecycleCallbacks(it)
 		}
 	}
 
@@ -76,7 +117,7 @@ class KotatsuApp : Application() {
 			StrictMode.ThreadPolicy.Builder()
 				.detectAll()
 				.penaltyLog()
-				.build()
+				.build(),
 		)
 		StrictMode.setVmPolicy(
 			StrictMode.VmPolicy.Builder()
@@ -85,7 +126,7 @@ class KotatsuApp : Application() {
 				.setClassInstanceLimit(PagesCache::class.java, 1)
 				.setClassInstanceLimit(MangaLoaderContext::class.java, 1)
 				.penaltyLog()
-				.build()
+				.build(),
 		)
 		FragmentStrictMode.defaultPolicy = FragmentStrictMode.Policy.Builder()
 			.penaltyDeath()
@@ -96,4 +137,4 @@ class KotatsuApp : Application() {
 			.detectFragmentTagUsage()
 			.build()
 	}
-}
+}

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

@@ -1,25 +1,57 @@
 package org.koitharu.kotatsu.base.domain
 
+import android.graphics.BitmapFactory
+import android.net.Uri
+import android.util.Size
 import androidx.room.withTransaction
+import java.io.File
+import java.io.InputStream
+import java.util.zip.ZipFile
+import javax.inject.Inject
+import kotlin.math.roundToInt
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.distinctUntilChanged
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.runInterruptible
+import okhttp3.OkHttpClient
+import okhttp3.Request
 import org.koitharu.kotatsu.core.db.MangaDatabase
 import org.koitharu.kotatsu.core.db.entity.*
+import org.koitharu.kotatsu.core.network.CommonHeaders
+import org.koitharu.kotatsu.core.parser.MangaRepository
 import org.koitharu.kotatsu.core.prefs.ReaderMode
 import org.koitharu.kotatsu.parsers.model.Manga
+import org.koitharu.kotatsu.parsers.model.MangaPage
 import org.koitharu.kotatsu.parsers.model.MangaSource
 import org.koitharu.kotatsu.parsers.model.MangaTag
+import org.koitharu.kotatsu.parsers.util.await
+import org.koitharu.kotatsu.reader.domain.ReaderColorFilter
 
-class MangaDataRepository(private val db: MangaDatabase) {
+private const val MIN_WEBTOON_RATIO = 2
 
-	suspend fun savePreferences(manga: Manga, mode: ReaderMode) {
-		val tags = manga.tags.toEntities()
+class MangaDataRepository @Inject constructor(
+	private val okHttpClient: OkHttpClient,
+	private val db: MangaDatabase,
+) {
+
+	suspend fun saveReaderMode(manga: Manga, mode: ReaderMode) {
 		db.withTransaction {
-			db.tagsDao.upsert(tags)
-			db.mangaDao.upsert(manga.toEntity(), tags)
+			storeManga(manga)
+			val entity = db.preferencesDao.find(manga.id) ?: newEntity(manga.id)
+			db.preferencesDao.upsert(entity.copy(mode = mode.id))
+		}
+	}
+
+	suspend fun saveColorFilter(manga: Manga, colorFilter: ReaderColorFilter?) {
+		db.withTransaction {
+			storeManga(manga)
+			val entity = db.preferencesDao.find(manga.id) ?: newEntity(manga.id)
 			db.preferencesDao.upsert(
-				MangaPrefsEntity(
-					mangaId = manga.id,
-					mode = mode.id
-				)
+				entity.copy(
+					cfBrightness = colorFilter?.brightness ?: 0f,
+					cfContrast = colorFilter?.contrast ?: 0f,
+				),
 			)
 		}
 	}
@@ -28,6 +60,16 @@ class MangaDataRepository(private val db: MangaDatabase) {
 		return db.preferencesDao.find(mangaId)?.let { ReaderMode.valueOf(it.mode) }
 	}
 
+	suspend fun getColorFilter(mangaId: Long): ReaderColorFilter? {
+		return db.preferencesDao.find(mangaId)?.getColorFilterOrNull()
+	}
+
+	fun observeColorFilter(mangaId: Long): Flow<ReaderColorFilter?> {
+		return db.preferencesDao.observe(mangaId)
+			.map { it?.getColorFilterOrNull() }
+			.distinctUntilChanged()
+	}
+
 	suspend fun findMangaById(mangaId: Long): Manga? {
 		return db.mangaDao.find(mangaId)?.toManga()
 	}
@@ -49,4 +91,74 @@ class MangaDataRepository(private val db: MangaDatabase) {
 	suspend fun findTags(source: MangaSource): Set<MangaTag> {
 		return db.tagsDao.findTags(source.name).toMangaTags()
 	}
-}
+
+	private fun MangaPrefsEntity.getColorFilterOrNull(): ReaderColorFilter? {
+		return if (cfBrightness != 0f || cfContrast != 0f) {
+			ReaderColorFilter(cfBrightness, cfContrast)
+		} else {
+			null
+		}
+	}
+
+	/**
+	 * Automatic determine type of manga by page size
+	 * @return ReaderMode.WEBTOON if page is wide
+	 */
+	suspend fun determineMangaIsWebtoon(repository: MangaRepository, pages: List<MangaPage>): Boolean {
+		val pageIndex = (pages.size * 0.3).roundToInt()
+		val page = requireNotNull(pages.getOrNull(pageIndex)) { "No pages" }
+		val url = repository.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()
+			okHttpClient.newCall(request).await().use {
+				runInterruptible(Dispatchers.IO) {
+					getBitmapSize(it.body?.byteStream())
+				}
+			}
+		}
+		return size.width * MIN_WEBTOON_RATIO < size.height
+	}
+
+	private fun newEntity(mangaId: Long) = MangaPrefsEntity(
+		mangaId = mangaId,
+		mode = -1,
+		cfBrightness = 0f,
+		cfContrast = 0f,
+	)
+
+	companion object {
+
+		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/domain/MangaIntent.kt

@@ -5,6 +5,8 @@ import android.net.Uri
 import android.os.Bundle
 import org.koitharu.kotatsu.core.model.parcelable.ParcelableManga
 import org.koitharu.kotatsu.parsers.model.Manga
+import org.koitharu.kotatsu.utils.ext.getParcelableCompat
+import org.koitharu.kotatsu.utils.ext.getParcelableExtraCompat
 
 class MangaIntent private constructor(
 	val manga: Manga?,
@@ -13,15 +15,15 @@ class MangaIntent private constructor(
 ) {
 
 	constructor(intent: Intent?) : this(
-		manga = intent?.getParcelableExtra<ParcelableManga>(KEY_MANGA)?.manga,
+		manga = intent?.getParcelableExtraCompat<ParcelableManga>(KEY_MANGA)?.manga,
 		mangaId = intent?.getLongExtra(KEY_ID, ID_NONE) ?: ID_NONE,
-		uri = intent?.data
+		uri = intent?.data,
 	)
 
 	constructor(args: Bundle?) : this(
-		manga = args?.getParcelable<ParcelableManga>(KEY_MANGA)?.manga,
+		manga = args?.getParcelableCompat<ParcelableManga>(KEY_MANGA)?.manga,
 		mangaId = args?.getLong(KEY_ID, ID_NONE) ?: ID_NONE,
-		uri = null
+		uri = null,
 	)
 
 	companion object {

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

@@ -1,81 +0,0 @@
-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/domain/ReversibleHandle.kt

@@ -0,0 +1,29 @@
+package org.koitharu.kotatsu.base.domain
+
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.NonCancellable
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import org.koitharu.kotatsu.utils.ext.printStackTraceDebug
+import org.koitharu.kotatsu.utils.ext.processLifecycleScope
+import org.koitharu.kotatsu.utils.ext.runCatchingCancellable
+
+fun interface ReversibleHandle {
+
+	suspend fun reverse()
+}
+
+fun ReversibleHandle.reverseAsync() = processLifecycleScope.launch(Dispatchers.Default) {
+	runCatchingCancellable {
+		withContext(NonCancellable) {
+			reverse()
+		}
+	}.onFailure {
+		it.printStackTraceDebug()
+	}
+}
+
+operator fun ReversibleHandle.plus(other: ReversibleHandle) = ReversibleHandle {
+	this.reverse()
+	other.reverse()
+}

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

@@ -21,14 +21,14 @@ abstract class AlertDialogFragment<B : ViewBinding> : DialogFragment() {
 		viewBinding = binding
 		return MaterialAlertDialogBuilder(requireContext(), theme)
 			.setView(binding.root)
-			.also(::onBuildDialog)
+			.run(::onBuildDialog)
 			.create()
 	}
 
 	final override fun onCreateView(
 		inflater: LayoutInflater,
 		container: ViewGroup?,
-		savedInstanceState: Bundle?
+		savedInstanceState: Bundle?,
 	) = viewBinding?.root
 
 	@CallSuper
@@ -37,9 +37,9 @@ abstract class AlertDialogFragment<B : ViewBinding> : DialogFragment() {
 		super.onDestroyView()
 	}
 
-	open fun onBuildDialog(builder: MaterialAlertDialogBuilder) = Unit
+	open fun onBuildDialog(builder: MaterialAlertDialogBuilder): MaterialAlertDialogBuilder = builder
 
 	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

@@ -12,24 +12,32 @@ 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.content.ContextCompat
+import androidx.core.graphics.ColorUtils
 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 dagger.hilt.android.EntryPointAccessors
 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.BaseActivityEntryPoint
 import org.koitharu.kotatsu.base.ui.util.WindowInsetsDelegate
+import org.koitharu.kotatsu.base.ui.util.inject
 import org.koitharu.kotatsu.core.exceptions.resolve.ExceptionResolver
 import org.koitharu.kotatsu.core.prefs.AppSettings
+import org.koitharu.kotatsu.utils.ext.getThemeColor
+import javax.inject.Inject
 
 abstract class BaseActivity<B : ViewBinding> :
 	AppCompatActivity(),
 	WindowInsetsDelegate.WindowInsetsListener {
 
+	@Inject
+	lateinit var settings: AppSettings
+
 	protected lateinit var binding: B
 		private set
 
@@ -42,10 +50,13 @@ abstract class BaseActivity<B : ViewBinding> :
 	val actionModeDelegate = ActionModeDelegate()
 
 	override fun onCreate(savedInstanceState: Bundle?) {
-		val settings = get<AppSettings>()
+		EntryPointAccessors.fromApplication(this, BaseActivityEntryPoint::class.java).inject(this)
+		val isAmoled = settings.isAmoledTheme
+		val isDynamic = settings.isDynamicTheme
 		when {
-			settings.isAmoledTheme -> setTheme(R.style.ThemeOverlay_Kotatsu_AMOLED)
-			settings.isDynamicTheme -> setTheme(R.style.Theme_Kotatsu_Monet)
+			isAmoled && isDynamic -> setTheme(R.style.Theme_Kotatsu_Monet_Amoled)
+			isAmoled -> setTheme(R.style.Theme_Kotatsu_Amoled)
+			isDynamic -> setTheme(R.style.Theme_Kotatsu_Monet)
 		}
 		super.onCreate(savedInstanceState)
 		WindowCompat.setDecorFitsSystemWindows(window, false)
@@ -79,7 +90,8 @@ abstract class BaseActivity<B : ViewBinding> :
 
 	override fun onKeyDown(keyCode: Int, event: KeyEvent?): Boolean {
 		if (BuildConfig.DEBUG && keyCode == KeyEvent.KEYCODE_VOLUME_UP) { // TODO remove
-			ActivityCompat.recreate(this)
+			// ActivityCompat.recreate(this)
+			TODO("Test error")
 			return true
 		}
 		return super.onKeyDown(keyCode, event)
@@ -92,27 +104,36 @@ abstract class BaseActivity<B : ViewBinding> :
 	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
+		return isNight && settings.isAmoledTheme
 	}
 
 	@CallSuper
 	override fun onSupportActionModeStarted(mode: ActionMode) {
 		super.onSupportActionModeStarted(mode)
 		actionModeDelegate.onSupportActionModeStarted(mode)
+		val actionModeColor = ColorUtils.compositeColors(
+			ContextCompat.getColor(this, com.google.android.material.R.color.m3_appbar_overlay_color),
+			getThemeColor(com.google.android.material.R.attr.colorSurface),
+		)
 		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
+		findViewById<ActionBarContextView?>(androidx.appcompat.R.id.action_mode_bar).apply {
+			setBackgroundColor(actionModeColor)
+			updateLayoutParams<ViewGroup.MarginLayoutParams> {
+				topMargin = insets.top
+			}
 		}
+		window.statusBarColor = actionModeColor
 	}
 
 	@CallSuper
 	override fun onSupportActionModeFinished(mode: ActionMode) {
 		super.onSupportActionModeFinished(mode)
 		actionModeDelegate.onSupportActionModeFinished(mode)
+		window.statusBarColor = getThemeColor(android.R.attr.statusBarColor)
 	}
 
+	@Suppress("OVERRIDE_DEPRECATION", "DEPRECATION")
 	override fun onBackPressed() {
 		if ( // https://issuetracker.google.com/issues/139738913
 			Build.VERSION.SDK_INT == Build.VERSION_CODES.Q &&
@@ -124,4 +145,4 @@ abstract class BaseActivity<B : ViewBinding> :
 			super.onBackPressed()
 		}
 	}
-}
+}

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

@@ -2,19 +2,20 @@ package org.koitharu.kotatsu.base.ui
 
 import android.app.Dialog
 import android.os.Bundle
+import android.util.DisplayMetrics
 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.R as materialR
 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
+import org.koitharu.kotatsu.utils.ext.displayCompat
 
 abstract class BaseBottomSheet<B : ViewBinding> : BottomSheetDialogFragment() {
 
@@ -29,10 +30,24 @@ abstract class BaseBottomSheet<B : ViewBinding> : BottomSheetDialogFragment() {
 	final override fun onCreateView(
 		inflater: LayoutInflater,
 		container: ViewGroup?,
-		savedInstanceState: Bundle?
+		savedInstanceState: Bundle?,
 	): View {
 		val binding = onInflateView(inflater, container)
 		viewBinding = binding
+
+		// Enforce max width for tablets
+		val width = resources.getDimensionPixelSize(R.dimen.bottom_sheet_width)
+		if (width > 0) {
+			behavior?.maxWidth = width
+		}
+
+		// Set peek height to 50% display height
+		requireContext().displayCompat?.let {
+			val metrics = DisplayMetrics()
+			it.getRealMetrics(metrics)
+			behavior?.peekHeight = (metrics.heightPixels * 0.4).toInt()
+		}
+
 		return binding.root
 	}
 
@@ -42,10 +57,15 @@ abstract class BaseBottomSheet<B : ViewBinding> : BottomSheetDialogFragment() {
 	}
 
 	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)
+		return AppBottomSheetDialog(requireContext(), theme)
+	}
+
+	fun addBottomSheetCallback(callback: BottomSheetBehavior.BottomSheetCallback) {
+		val b = behavior ?: return
+		b.addBottomSheetCallback(callback)
+		val rootView = dialog?.findViewById<View>(materialR.id.design_bottom_sheet)
+		if (rootView != null) {
+			callback.onStateChanged(rootView, b.state)
 		}
 	}
 
@@ -63,4 +83,4 @@ abstract class BaseBottomSheet<B : ViewBinding> : BottomSheetDialogFragment() {
 		}
 		b.isDraggable = !isLocked
 	}
-}
+}

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

@@ -52,4 +52,4 @@ abstract class BaseFragment<B : ViewBinding> :
 	protected fun bindingOrNull() = viewBinding
 
 	protected abstract fun onInflateView(inflater: LayoutInflater, container: ViewGroup?): B
-}
+}

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

@@ -7,10 +7,12 @@ import android.view.View
 import android.view.WindowManager
 import androidx.viewbinding.ViewBinding
 
+@Suppress("DEPRECATION")
 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
 
+@Suppress("DEPRECATION")
 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
@@ -18,7 +20,8 @@ private const val SYSTEM_UI_FLAGS_HIDDEN = View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
 	View.SYSTEM_UI_FLAG_FULLSCREEN or
 	View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
 
-abstract class BaseFullscreenActivity<B : ViewBinding> : BaseActivity<B>(),
+abstract class BaseFullscreenActivity<B : ViewBinding> :
+	BaseActivity<B>(),
 	View.OnSystemUiVisibilityChangeListener {
 
 	override fun onCreate(savedInstanceState: Bundle?) {
@@ -35,16 +38,19 @@ abstract class BaseFullscreenActivity<B : ViewBinding> : BaseActivity<B>(),
 		showSystemUI()
 	}
 
+	@Suppress("DEPRECATION", "DeprecatedCallableAddReplaceWith")
 	@Deprecated("Deprecated in Java")
 	final override fun onSystemUiVisibilityChange(visibility: Int) {
 		onSystemUiVisibilityChanged(visibility and View.SYSTEM_UI_FLAG_FULLSCREEN == 0)
 	}
 
 	// TODO WindowInsetsControllerCompat works incorrect
+	@Suppress("DEPRECATION")
 	protected fun hideSystemUI() {
 		window.decorView.systemUiVisibility = SYSTEM_UI_FLAGS_HIDDEN
 	}
 
+	@Suppress("DEPRECATION")
 	protected fun showSystemUI() {
 		window.decorView.systemUiVisibility = SYSTEM_UI_FLAGS_SHOWN
 	}

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

@@ -6,22 +6,23 @@ 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 dagger.hilt.android.AndroidEntryPoint
+import javax.inject.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
 
+@AndroidEntryPoint
 abstract class BasePreferenceFragment(@StringRes private val titleId: Int) :
 	PreferenceFragmentCompat(),
 	WindowInsetsDelegate.WindowInsetsListener,
 	RecyclerViewOwner {
 
-	protected val settings by inject<AppSettings>(mode = LazyThreadSafetyMode.NONE)
+	@Inject
+	lateinit var settings: AppSettings
 
 	@Suppress("LeakingThis")
 	protected val insetsDelegate = WindowInsetsDelegate(this)
@@ -50,7 +51,7 @@ abstract class BasePreferenceFragment(@StringRes private val titleId: Int) :
 	@CallSuper
 	override fun onWindowInsetsChanged(insets: Insets) {
 		listView.updatePadding(
-			bottom = insets.bottom
+			bottom = insets.bottom,
 		)
 	}
 
@@ -59,4 +60,4 @@ abstract class BasePreferenceFragment(@StringRes private val titleId: Int) :
 		(parentFragment as? SettingsHeadersFragment)?.setTitle(title)
 			?: activity?.setTitle(title)
 	}
-}
+}

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

@@ -1,18 +1,25 @@
 package org.koitharu.kotatsu.base.ui
 
+import androidx.lifecycle.LiveData
 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
+import org.koitharu.kotatsu.utils.ext.printStackTraceDebug
 
 abstract class BaseViewModel : ViewModel() {
 
-	val onError = SingleLiveEvent<Throwable>()
-	val isLoading = CountedBooleanLiveData()
+	protected val loadingCounter = CountedBooleanLiveData()
+	protected val errorEvent = SingleLiveEvent<Throwable>()
+
+	val onError: LiveData<Throwable>
+		get() = errorEvent
+
+	val isLoading: LiveData<Boolean>
+		get() = loadingCounter
 
 	protected fun launchJob(
 		context: CoroutineContext = EmptyCoroutineContext,
@@ -25,20 +32,18 @@ abstract class BaseViewModel : ViewModel() {
 		start: CoroutineStart = CoroutineStart.DEFAULT,
 		block: suspend CoroutineScope.() -> Unit
 	): Job = viewModelScope.launch(context + createErrorHandler(), start) {
-		isLoading.postValue(true)
+		loadingCounter.increment()
 		try {
 			block()
 		} finally {
-			isLoading.postValue(false)
+			loadingCounter.decrement()
 		}
 	}
 
 	private fun createErrorHandler() = CoroutineExceptionHandler { _, throwable ->
-		if (BuildConfig.DEBUG) {
-			throwable.printStackTrace()
-		}
+		throwable.printStackTraceDebug()
 		if (throwable !is CancellationException) {
-			onError.postCall(throwable)
+			errorEvent.postCall(throwable)
 		}
 	}
 }

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

@@ -4,34 +4,48 @@ import android.app.Service
 import android.content.Intent
 import androidx.lifecycle.lifecycleScope
 import kotlinx.coroutines.CoroutineDispatcher
+import kotlinx.coroutines.CoroutineExceptionHandler
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 import kotlinx.coroutines.withContext
+import org.koitharu.kotatsu.utils.ext.printStackTraceDebug
 
 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 {
+	final 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 {
+	private fun launchCoroutine(intent: Intent?, startId: Int) = lifecycleScope.launch(errorHandler(startId)) {
 		mutex.withLock {
 			try {
-				withContext(dispatcher) {
-					processIntent(intent)
+				if (intent != null) {
+					withContext(dispatcher) {
+						processIntent(startId, intent)
+					}
 				}
+			} catch (e: Throwable) {
+				e.printStackTraceDebug()
+				onError(startId, e)
 			} finally {
 				stopSelf(startId)
 			}
 		}
 	}
 
-	protected abstract suspend fun processIntent(intent: Intent?)
-}
+	protected abstract suspend fun processIntent(startId: Int, intent: Intent)
+
+	protected abstract fun onError(startId: Int, error: Throwable)
+
+	private fun errorHandler(startId: Int) = CoroutineExceptionHandler { _, throwable ->
+		throwable.printStackTraceDebug()
+		onError(startId, throwable)
+	}
+}

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

@@ -0,0 +1,22 @@
+package org.koitharu.kotatsu.base.ui
+
+import android.app.Activity
+import android.app.Application.ActivityLifecycleCallbacks
+import android.os.Bundle
+
+interface DefaultActivityLifecycleCallbacks : ActivityLifecycleCallbacks {
+
+	override fun onActivityCreated(activity: Activity, savedInstanceState: Bundle?) = Unit
+
+	override fun onActivityStarted(activity: Activity) = Unit
+
+	override fun onActivityResumed(activity: Activity) = Unit
+
+	override fun onActivityPaused(activity: Activity) = Unit
+
+	override fun onActivityStopped(activity: Activity) = Unit
+
+	override fun onActivitySaveInstanceState(activity: Activity, outState: Bundle) = Unit
+
+	override fun onActivityDestroyed(activity: Activity) = Unit
+}

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

@@ -21,7 +21,7 @@ class AppBottomSheetDialog(context: Context, theme: Int) : BottomSheetDialog(con
 			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:
+				// Fix super-class's window flag bug by respecting the initial system UI visibility:
 				window.decorView.systemUiVisibility = edgeToEdgeFlags or initialSystemUiVisibility
 			}
 		}

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

@@ -0,0 +1,13 @@
+package org.koitharu.kotatsu.base.ui.dialog
+
+import android.content.DialogInterface
+
+class RememberSelectionDialogListener(initialValue: Int) : DialogInterface.OnClickListener {
+
+	var selection: Int = initialValue
+		private set
+
+	override fun onClick(dialog: DialogInterface?, which: Int) {
+		selection = which
+	}
+}

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

@@ -1,89 +0,0 @@
-package org.koitharu.kotatsu.base.ui.dialog
-
-import android.content.Context
-import android.content.DialogInterface
-import android.text.InputFilter
-import android.view.LayoutInflater
-import androidx.annotation.StringRes
-import androidx.appcompat.app.AlertDialog
-import com.google.android.material.dialog.MaterialAlertDialogBuilder
-import org.koitharu.kotatsu.databinding.DialogInputBinding
-
-class TextInputDialog private constructor(
-	private val delegate: AlertDialog,
-) : DialogInterface by delegate {
-
-	fun show() = delegate.show()
-
-	class Builder(context: Context) {
-
-		private val binding = DialogInputBinding.inflate(LayoutInflater.from(context))
-
-		private val delegate = MaterialAlertDialogBuilder(context)
-			.setView(binding.root)
-
-		fun setTitle(@StringRes titleResId: Int): Builder {
-			delegate.setTitle(titleResId)
-			return this
-		}
-
-		fun setTitle(title: CharSequence): Builder {
-			delegate.setTitle(title)
-			return this
-		}
-
-		fun setHint(@StringRes hintResId: Int): Builder {
-			binding.inputEdit.hint = binding.root.context.getString(hintResId)
-			return this
-		}
-
-		fun setMaxLength(maxLength: Int, strict: Boolean): Builder {
-			with(binding.inputLayout) {
-				counterMaxLength = maxLength
-				isCounterEnabled = maxLength > 0
-			}
-			if (strict && maxLength > 0) {
-				binding.inputEdit.filters += InputFilter.LengthFilter(maxLength)
-			}
-			return this
-		}
-
-		fun setInputType(inputType: Int): Builder {
-			binding.inputEdit.inputType = inputType
-			return this
-		}
-
-		fun setText(text: String): Builder {
-			binding.inputEdit.setText(text)
-			binding.inputEdit.setSelection(text.length)
-			return this
-		}
-
-		fun setPositiveButton(
-			@StringRes textId: Int,
-			listener: (DialogInterface, String) -> Unit
-		): Builder {
-			delegate.setPositiveButton(textId) { dialog, _ ->
-				listener(dialog, binding.inputEdit.text?.toString().orEmpty())
-			}
-			return this
-		}
-
-		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/AdapterDelegateClickListenerAdapter.kt

@@ -0,0 +1,20 @@
+package org.koitharu.kotatsu.base.ui.list
+
+import android.view.View
+import android.view.View.OnClickListener
+import android.view.View.OnLongClickListener
+import com.hannesdorfmann.adapterdelegates4.dsl.AdapterDelegateViewBindingViewHolder
+
+class AdapterDelegateClickListenerAdapter<I>(
+	private val adapterDelegate: AdapterDelegateViewBindingViewHolder<out I, *>,
+	private val clickListener: OnListItemClickListener<I>,
+) : OnClickListener, OnLongClickListener {
+
+	override fun onClick(v: View) {
+		clickListener.onItemClick(adapterDelegate.item, v)
+	}
+
+	override fun onLongClick(v: View): Boolean {
+		return clickListener.onItemLongClick(adapterDelegate.item, v)
+	}
+}

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

@@ -0,0 +1,203 @@
+package org.koitharu.kotatsu.base.ui.list
+
+import android.app.Activity
+import android.os.Bundle
+import android.view.Menu
+import android.view.MenuItem
+import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.view.ActionMode
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.LifecycleEventObserver
+import androidx.lifecycle.LifecycleOwner
+import androidx.recyclerview.widget.RecyclerView
+import androidx.savedstate.SavedStateRegistry
+import androidx.savedstate.SavedStateRegistryOwner
+import kotlin.coroutines.EmptyCoroutineContext
+import kotlinx.coroutines.Dispatchers
+import org.koitharu.kotatsu.base.ui.list.decor.AbstractSelectionItemDecoration
+
+private const val KEY_SELECTION = "selection"
+private const val PROVIDER_NAME = "selection_decoration"
+
+class ListSelectionController(
+	private val activity: Activity,
+	private val decoration: AbstractSelectionItemDecoration,
+	private val registryOwner: SavedStateRegistryOwner,
+	private val callback: Callback2,
+) : ActionMode.Callback, SavedStateRegistry.SavedStateProvider {
+
+	private var actionMode: ActionMode? = null
+
+	val count: Int
+		get() = decoration.checkedItemsCount
+
+	init {
+		registryOwner.lifecycle.addObserver(StateEventObserver())
+	}
+
+	fun snapshot(): Set<Long> {
+		return peekCheckedIds().toSet()
+	}
+
+	fun peekCheckedIds(): Set<Long> {
+		return decoration.checkedItemsIds
+	}
+
+	fun clear() {
+		decoration.clearSelection()
+		notifySelectionChanged()
+	}
+
+	fun addAll(ids: Collection<Long>) {
+		if (ids.isEmpty()) {
+			return
+		}
+		decoration.checkAll(ids)
+		notifySelectionChanged()
+	}
+
+	fun attachToRecyclerView(recyclerView: RecyclerView) {
+		recyclerView.addItemDecoration(decoration)
+	}
+
+	override fun saveState(): Bundle {
+		val bundle = Bundle(1)
+		bundle.putLongArray(KEY_SELECTION, peekCheckedIds().toLongArray())
+		return bundle
+	}
+
+	fun onItemClick(id: Long): Boolean {
+		if (decoration.checkedItemsCount != 0) {
+			decoration.toggleItemChecked(id)
+			if (decoration.checkedItemsCount == 0) {
+				actionMode?.finish()
+			} else {
+				actionMode?.invalidate()
+			}
+			notifySelectionChanged()
+			return true
+		}
+		return false
+	}
+
+	fun onItemLongClick(id: Long): Boolean {
+		startActionMode()
+		return actionMode?.also {
+			decoration.setItemIsChecked(id, true)
+			notifySelectionChanged()
+		} != null
+	}
+
+	override fun onCreateActionMode(mode: ActionMode, menu: Menu): Boolean {
+		return callback.onCreateActionMode(this, mode, menu)
+	}
+
+	override fun onPrepareActionMode(mode: ActionMode, menu: Menu): Boolean {
+		return callback.onPrepareActionMode(this, mode, menu)
+	}
+
+	override fun onActionItemClicked(mode: ActionMode, item: MenuItem): Boolean {
+		return callback.onActionItemClicked(this, mode, item)
+	}
+
+	override fun onDestroyActionMode(mode: ActionMode) {
+		callback.onDestroyActionMode(this, mode)
+		clear()
+		actionMode = null
+	}
+
+	private fun startActionMode() {
+		if (actionMode == null) {
+			actionMode = (activity as? AppCompatActivity)?.startSupportActionMode(this)
+		}
+	}
+
+	private fun notifySelectionChanged() {
+		val count = decoration.checkedItemsCount
+		callback.onSelectionChanged(this, count)
+		if (count == 0) {
+			actionMode?.finish()
+		} else {
+			actionMode?.invalidate()
+		}
+	}
+
+	private fun restoreState(ids: Collection<Long>) {
+		if (ids.isEmpty() || decoration.checkedItemsCount != 0) {
+			return
+		}
+		decoration.checkAll(ids)
+		startActionMode()
+		notifySelectionChanged()
+	}
+
+	@Deprecated("")
+	interface Callback : Callback2 {
+
+		fun onSelectionChanged(count: Int)
+
+		fun onCreateActionMode(mode: ActionMode, menu: Menu): Boolean
+
+		fun onPrepareActionMode(mode: ActionMode, menu: Menu): Boolean
+
+		fun onActionItemClicked(mode: ActionMode, item: MenuItem): Boolean
+
+		fun onDestroyActionMode(mode: ActionMode) = Unit
+
+		override fun onSelectionChanged(controller: ListSelectionController, count: Int) {
+			onSelectionChanged(count)
+		}
+
+		override fun onCreateActionMode(controller: ListSelectionController, mode: ActionMode, menu: Menu): Boolean {
+			return onCreateActionMode(mode, menu)
+		}
+
+		override fun onPrepareActionMode(controller: ListSelectionController, mode: ActionMode, menu: Menu): Boolean {
+			return onPrepareActionMode(mode, menu)
+		}
+
+		override fun onActionItemClicked(
+			controller: ListSelectionController,
+			mode: ActionMode,
+			item: MenuItem,
+		): Boolean = onActionItemClicked(mode, item)
+
+		override fun onDestroyActionMode(controller: ListSelectionController, mode: ActionMode) {
+			onDestroyActionMode(mode)
+		}
+	}
+
+	interface Callback2 {
+
+		fun onSelectionChanged(controller: ListSelectionController, count: Int)
+
+		fun onCreateActionMode(controller: ListSelectionController, mode: ActionMode, menu: Menu): Boolean
+
+		fun onPrepareActionMode(controller: ListSelectionController, mode: ActionMode, menu: Menu): Boolean {
+			mode.title = controller.count.toString()
+			return true
+		}
+
+		fun onActionItemClicked(controller: ListSelectionController, mode: ActionMode, item: MenuItem): Boolean
+
+		fun onDestroyActionMode(controller: ListSelectionController, mode: ActionMode) = Unit
+	}
+
+	private inner class StateEventObserver : LifecycleEventObserver {
+
+		override fun onStateChanged(source: LifecycleOwner, event: Lifecycle.Event) {
+			if (event == Lifecycle.Event.ON_CREATE) {
+				val registry = registryOwner.savedStateRegistry
+				registry.registerSavedStateProvider(PROVIDER_NAME, this@ListSelectionController)
+				val state = registry.consumeRestoredStateForKey(PROVIDER_NAME)
+				if (state != null) {
+					Dispatchers.Main.dispatch(EmptyCoroutineContext) { // == Handler.post
+						if (source.lifecycle.currentState.isAtLeast(Lifecycle.State.CREATED)) {
+							restoreState(state.getLongArray(KEY_SELECTION)?.toList().orEmpty())
+						}
+					}
+				}
+			}
+		}
+	}
+}

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

@@ -0,0 +1,237 @@
+package org.koitharu.kotatsu.base.ui.list
+
+import android.app.Activity
+import android.os.Bundle
+import android.view.Menu
+import android.view.MenuItem
+import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.view.ActionMode
+import androidx.collection.ArrayMap
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.LifecycleEventObserver
+import androidx.lifecycle.LifecycleOwner
+import androidx.recyclerview.widget.RecyclerView
+import androidx.savedstate.SavedStateRegistry
+import androidx.savedstate.SavedStateRegistryOwner
+import kotlinx.coroutines.Dispatchers
+import org.koitharu.kotatsu.base.ui.list.decor.AbstractSelectionItemDecoration
+import kotlin.coroutines.EmptyCoroutineContext
+
+private const val PROVIDER_NAME = "selection_decoration_sectioned"
+
+class SectionedSelectionController<T : Any>(
+	private val activity: Activity,
+	private val owner: SavedStateRegistryOwner,
+	private val callback: Callback<T>,
+) : ActionMode.Callback, SavedStateRegistry.SavedStateProvider {
+
+	private var actionMode: ActionMode? = null
+
+	private var pendingData: MutableMap<String, Collection<Long>>? = null
+	private val decorations = ArrayMap<T, AbstractSelectionItemDecoration>()
+
+	val count: Int
+		get() = decorations.values.sumOf { it.checkedItemsCount }
+
+	init {
+		owner.lifecycle.addObserver(StateEventObserver())
+	}
+
+	fun snapshot(): Map<T, Set<Long>> {
+		return decorations.mapValues { it.value.checkedItemsIds.toSet() }
+	}
+
+	fun peekCheckedIds(): Map<T, Set<Long>> {
+		return decorations.mapValues { it.value.checkedItemsIds }
+	}
+
+	fun clear() {
+		decorations.values.forEach {
+			it.clearSelection()
+		}
+		notifySelectionChanged()
+	}
+
+	fun attachToRecyclerView(section: T, recyclerView: RecyclerView) {
+		val decoration = getDecoration(section)
+		val pendingIds = pendingData?.remove(section.toString())
+		if (!pendingIds.isNullOrEmpty()) {
+			decoration.checkAll(pendingIds)
+			startActionMode()
+			notifySelectionChanged()
+		}
+		var shouldAddDecoration = true
+		for (i in (0 until recyclerView.itemDecorationCount).reversed()) {
+			val decor = recyclerView.getItemDecorationAt(i)
+			if (decor === decoration) {
+				shouldAddDecoration = false
+				break
+			} else if (decor.javaClass == decoration.javaClass) {
+				recyclerView.removeItemDecorationAt(i)
+			}
+		}
+		if (shouldAddDecoration) {
+			recyclerView.addItemDecoration(decoration)
+		}
+		if (pendingData?.isEmpty() == true) {
+			pendingData = null
+		}
+	}
+
+	override fun saveState(): Bundle {
+		val bundle = Bundle(decorations.size)
+		for ((k, v) in decorations) {
+			bundle.putLongArray(k.toString(), v.checkedItemsIds.toLongArray())
+		}
+		return bundle
+	}
+
+	fun onItemClick(section: T, id: Long): Boolean {
+		val decoration = getDecoration(section)
+		if (isInSelectionMode()) {
+			decoration.toggleItemChecked(id)
+			if (isInSelectionMode()) {
+				actionMode?.invalidate()
+			} else {
+				actionMode?.finish()
+			}
+			notifySelectionChanged()
+			return true
+		}
+		return false
+	}
+
+	fun onItemLongClick(section: T, id: Long): Boolean {
+		val decoration = getDecoration(section)
+		startActionMode()
+		return actionMode?.also {
+			decoration.setItemIsChecked(id, true)
+			notifySelectionChanged()
+		} != null
+	}
+
+	fun getSectionCount(section: T): Int {
+		return decorations[section]?.checkedItemsCount ?: 0
+	}
+
+	fun addToSelection(section: T, ids: Collection<Long>): Boolean {
+		val decoration = getDecoration(section)
+		startActionMode()
+		return actionMode?.also {
+			decoration.checkAll(ids)
+			notifySelectionChanged()
+		} != null
+	}
+
+	fun clearSelection(section: T) {
+		decorations[section]?.clearSelection() ?: return
+		notifySelectionChanged()
+	}
+
+	override fun onCreateActionMode(mode: ActionMode, menu: Menu): Boolean {
+		return callback.onCreateActionMode(this, mode, menu)
+	}
+
+	override fun onPrepareActionMode(mode: ActionMode, menu: Menu): Boolean {
+		return callback.onPrepareActionMode(this, mode, menu)
+	}
+
+	override fun onActionItemClicked(mode: ActionMode, item: MenuItem): Boolean {
+		return callback.onActionItemClicked(this, mode, item)
+	}
+
+	override fun onDestroyActionMode(mode: ActionMode) {
+		callback.onDestroyActionMode(this, mode)
+		clear()
+		actionMode = null
+	}
+
+	private fun startActionMode() {
+		if (actionMode == null) {
+			actionMode = (activity as? AppCompatActivity)?.startSupportActionMode(this)
+		}
+	}
+
+	private fun isInSelectionMode(): Boolean {
+		return decorations.values.any { x -> x.checkedItemsCount > 0 }
+	}
+
+	private fun notifySelectionChanged() {
+		val count = this.count
+		callback.onSelectionChanged(this, count)
+		if (count == 0) {
+			actionMode?.finish()
+		} else {
+			actionMode?.invalidate()
+		}
+	}
+
+	private fun restoreState(ids: MutableMap<String, Collection<Long>>) {
+		if (ids.isEmpty() || isInSelectionMode()) {
+			return
+		}
+		for ((k, v) in decorations) {
+			val items = ids.remove(k.toString())
+			if (!items.isNullOrEmpty()) {
+				v.checkAll(items)
+			}
+		}
+		pendingData = ids
+		if (isInSelectionMode()) {
+			startActionMode()
+			notifySelectionChanged()
+		}
+	}
+
+	private fun getDecoration(section: T): AbstractSelectionItemDecoration {
+		return decorations.getOrPut(section) {
+			callback.onCreateItemDecoration(this, section)
+		}
+	}
+
+	interface Callback<T : Any> {
+
+		fun onSelectionChanged(controller: SectionedSelectionController<T>, count: Int)
+
+		fun onCreateActionMode(controller: SectionedSelectionController<T>, mode: ActionMode, menu: Menu): Boolean
+
+		fun onPrepareActionMode(controller: SectionedSelectionController<T>, mode: ActionMode, menu: Menu): Boolean {
+			mode.title = controller.count.toString()
+			return true
+		}
+
+		fun onDestroyActionMode(controller: SectionedSelectionController<T>, mode: ActionMode) = Unit
+
+		fun onActionItemClicked(
+			controller: SectionedSelectionController<T>,
+			mode: ActionMode,
+			item: MenuItem,
+		): Boolean
+
+		fun onCreateItemDecoration(
+			controller: SectionedSelectionController<T>,
+			section: T,
+		): AbstractSelectionItemDecoration
+	}
+
+	private inner class StateEventObserver : LifecycleEventObserver {
+
+		override fun onStateChanged(source: LifecycleOwner, event: Lifecycle.Event) {
+			if (event == Lifecycle.Event.ON_CREATE) {
+				val registry = owner.savedStateRegistry
+				registry.registerSavedStateProvider(PROVIDER_NAME, this@SectionedSelectionController)
+				val state = registry.consumeRestoredStateForKey(PROVIDER_NAME)
+				if (state != null) {
+					Dispatchers.Main.dispatch(EmptyCoroutineContext) { // == Handler.post
+						if (source.lifecycle.currentState.isAtLeast(Lifecycle.State.CREATED)) {
+							restoreState(
+								state.keySet()
+									.associateWithTo(HashMap()) { state.getLongArray(it)?.toList().orEmpty() },
+							)
+						}
+					}
+				}
+			}
+		}
+	}
+}

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

@@ -12,7 +12,7 @@ abstract class AbstractSelectionItemDecoration : RecyclerView.ItemDecoration() {
 
 	private val bounds = Rect()
 	private val boundsF = RectF()
-	private val selection = HashSet<Long>()
+	protected val selection = HashSet<Long>()
 
 	protected var hasBackground: Boolean = true
 	protected var hasForeground: Boolean = false

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

@@ -11,8 +11,8 @@ class SpacingItemDecoration(@Px private val spacing: Int) : RecyclerView.ItemDec
 		outRect: Rect,
 		view: View,
 		parent: RecyclerView,
-		state: RecyclerView.State
+		state: RecyclerView.State,
 	) {
 		outRect.set(spacing, spacing, spacing, spacing)
 	}
-}
+}

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

@@ -0,0 +1,84 @@
+package org.koitharu.kotatsu.base.ui.list.fastscroll
+
+import android.animation.Animator
+import android.animation.AnimatorListenerAdapter
+import android.view.View
+import android.view.ViewAnimationUtils
+import android.view.animation.AccelerateInterpolator
+import android.view.animation.DecelerateInterpolator
+import androidx.core.view.isInvisible
+import androidx.core.view.isVisible
+import kotlin.math.hypot
+import org.koitharu.kotatsu.utils.ext.animatorDurationScale
+import org.koitharu.kotatsu.utils.ext.measureWidth
+
+class BubbleAnimator(
+	private val bubble: View,
+) {
+
+	private val animationDuration = (
+		bubble.resources.getInteger(android.R.integer.config_shortAnimTime) *
+			bubble.context.animatorDurationScale
+		).toLong()
+	private var animator: Animator? = null
+	private var isHiding = false
+
+	fun show() {
+		if (bubble.isVisible && !isHiding) {
+			return
+		}
+		isHiding = false
+		animator?.cancel()
+		animator = ViewAnimationUtils.createCircularReveal(
+			bubble,
+			bubble.measureWidth(),
+			bubble.measuredHeight,
+			0f,
+			hypot(bubble.width.toDouble(), bubble.height.toDouble()).toFloat(),
+		).apply {
+			bubble.isVisible = true
+			duration = animationDuration
+			interpolator = DecelerateInterpolator()
+			start()
+		}
+	}
+
+	fun hide() {
+		if (!bubble.isVisible || isHiding) {
+			return
+		}
+		animator?.cancel()
+		isHiding = true
+		animator = ViewAnimationUtils.createCircularReveal(
+			bubble,
+			bubble.width,
+			bubble.height,
+			hypot(bubble.width.toDouble(), bubble.height.toDouble()).toFloat(),
+			0f,
+		).apply {
+			duration = animationDuration
+			interpolator = AccelerateInterpolator()
+			addListener(HideListener())
+			start()
+		}
+	}
+
+	private inner class HideListener : AnimatorListenerAdapter() {
+
+		private var isCancelled = false
+
+		override fun onAnimationCancel(animation: Animator) {
+			super.onAnimationCancel(animation)
+			isCancelled = true
+		}
+
+		override fun onAnimationEnd(animation: Animator) {
+			super.onAnimationEnd(animation)
+			if (!isCancelled && animation === this@BubbleAnimator.animator) {
+				bubble.isInvisible = true
+				isHiding = false
+				this@BubbleAnimator.animator = null
+			}
+		}
+	}
+}

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

@@ -0,0 +1,45 @@
+package org.koitharu.kotatsu.base.ui.list.fastscroll
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.ViewGroup
+import androidx.annotation.AttrRes
+import androidx.recyclerview.widget.RecyclerView
+import org.koitharu.kotatsu.R
+
+class FastScrollRecyclerView @JvmOverloads constructor(
+	context: Context,
+	attrs: AttributeSet? = null,
+	@AttrRes defStyleAttr: Int = androidx.recyclerview.R.attr.recyclerViewStyle,
+) : RecyclerView(context, attrs, defStyleAttr) {
+
+	val fastScroller = FastScroller(context, attrs)
+
+	init {
+		fastScroller.id = R.id.fast_scroller
+		fastScroller.layoutParams = ViewGroup.LayoutParams(
+			ViewGroup.LayoutParams.WRAP_CONTENT,
+			ViewGroup.LayoutParams.MATCH_PARENT,
+		)
+	}
+
+	override fun setAdapter(adapter: Adapter<*>?) {
+		super.setAdapter(adapter)
+		fastScroller.setSectionIndexer(adapter as? FastScroller.SectionIndexer)
+	}
+
+	override fun setVisibility(visibility: Int) {
+		super.setVisibility(visibility)
+		fastScroller.visibility = visibility
+	}
+
+	override fun onAttachedToWindow() {
+		super.onAttachedToWindow()
+		fastScroller.attachRecyclerView(this)
+	}
+
+	override fun onDetachedFromWindow() {
+		fastScroller.detachRecyclerView()
+		super.onDetachedFromWindow()
+	}
+}

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

@@ -0,0 +1,521 @@
+package org.koitharu.kotatsu.base.ui.list.fastscroll
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.content.res.TypedArray
+import android.graphics.Color
+import android.graphics.drawable.Drawable
+import android.util.AttributeSet
+import android.util.TypedValue
+import android.view.LayoutInflater
+import android.view.MotionEvent
+import android.view.ViewGroup
+import android.widget.*
+import androidx.annotation.*
+import androidx.constraintlayout.widget.ConstraintLayout
+import androidx.constraintlayout.widget.ConstraintSet
+import androidx.coordinatorlayout.widget.CoordinatorLayout
+import androidx.core.content.ContextCompat
+import androidx.core.content.withStyledAttributes
+import androidx.core.view.GravityCompat
+import androidx.core.view.isGone
+import androidx.core.view.isVisible
+import androidx.recyclerview.widget.RecyclerView
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.databinding.FastScrollerBinding
+import org.koitharu.kotatsu.utils.ext.getThemeColor
+import org.koitharu.kotatsu.utils.ext.isLayoutReversed
+import kotlin.math.roundToInt
+import com.google.android.material.R as materialR
+
+private const val SCROLLBAR_HIDE_DELAY = 1000L
+private const val TRACK_SNAP_RANGE = 5
+
+@Suppress("MemberVisibilityCanBePrivate", "unused")
+class FastScroller @JvmOverloads constructor(
+	context: Context,
+	attrs: AttributeSet? = null,
+	@AttrRes defStyleAttr: Int = R.attr.fastScrollerStyle,
+) : LinearLayout(context, attrs, defStyleAttr) {
+
+	enum class BubbleSize(@DrawableRes val drawableId: Int, @DimenRes val textSizeId: Int) {
+		NORMAL(R.drawable.fastscroll_bubble, R.dimen.fastscroll_bubble_text_size),
+		SMALL(R.drawable.fastscroll_bubble_small, R.dimen.fastscroll_bubble_text_size_small)
+	}
+
+	private val binding = FastScrollerBinding.inflate(LayoutInflater.from(context), this)
+
+	private val scrollbarPaddingEnd = context.resources.getDimension(R.dimen.fastscroll_scrollbar_padding_end)
+
+	@ColorInt
+	private var bubbleColor = 0
+
+	@ColorInt
+	private var handleColor = 0
+
+	private var bubbleHeight = 0
+	private var handleHeight = 0
+	private var viewHeight = 0
+	private var hideScrollbar = true
+	private var showBubble = true
+	private var showBubbleAlways = false
+	private var bubbleSize = BubbleSize.NORMAL
+	private var bubbleImage: Drawable? = null
+	private var handleImage: Drawable? = null
+	private var trackImage: Drawable? = null
+	private var recyclerView: RecyclerView? = null
+	private val scrollbarAnimator = ScrollbarAnimator(binding.scrollbar, scrollbarPaddingEnd)
+	private val bubbleAnimator = BubbleAnimator(binding.bubble)
+
+	private var fastScrollListener: FastScrollListener? = null
+	private var sectionIndexer: SectionIndexer? = null
+
+	private val scrollbarHider = Runnable {
+		hideBubble()
+		hideScrollbar()
+	}
+
+	private val scrollListener: RecyclerView.OnScrollListener = object : RecyclerView.OnScrollListener() {
+		override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
+			if (!binding.thumb.isSelected && isEnabled) {
+				val y = recyclerView.scrollProportion
+				setViewPositions(y)
+
+				if (showBubbleAlways) {
+					val targetPos = getRecyclerViewTargetPosition(y)
+					sectionIndexer?.let { binding.bubble.text = it.getSectionText(recyclerView.context, targetPos) }
+				}
+			}
+		}
+
+		override fun onScrollStateChanged(recyclerView: RecyclerView, newState: Int) {
+			super.onScrollStateChanged(recyclerView, newState)
+
+			if (isEnabled) {
+				when (newState) {
+					RecyclerView.SCROLL_STATE_DRAGGING -> {
+						handler.removeCallbacks(scrollbarHider)
+						showScrollbar()
+						if (showBubbleAlways && sectionIndexer != null) showBubble()
+					}
+					RecyclerView.SCROLL_STATE_IDLE -> if (hideScrollbar && !binding.thumb.isSelected) {
+						handler.postDelayed(scrollbarHider, SCROLLBAR_HIDE_DELAY)
+					}
+				}
+			}
+		}
+	}
+
+	private val RecyclerView.scrollProportion: Float
+		get() {
+			val rangeDiff = computeVerticalScrollRange() - computeVerticalScrollExtent()
+			val proportion = computeVerticalScrollOffset() / if (rangeDiff > 0) rangeDiff.toFloat() else 1f
+			return viewHeight * proportion
+		}
+
+	init {
+		clipChildren = false
+		orientation = HORIZONTAL
+
+		@ColorInt var bubbleColor = context.getThemeColor(materialR.attr.colorControlNormal, Color.DKGRAY)
+		@ColorInt var handleColor = bubbleColor
+		@ColorInt var trackColor = context.getThemeColor(materialR.attr.colorOutline, Color.LTGRAY)
+		@ColorInt var textColor = context.getThemeColor(android.R.attr.textColorPrimaryInverse, Color.WHITE)
+
+		var showTrack = false
+
+		context.withStyledAttributes(attrs, R.styleable.FastScroller, defStyleAttr) {
+			bubbleColor = getColor(R.styleable.FastScroller_bubbleColor, bubbleColor)
+			handleColor = getColor(R.styleable.FastScroller_thumbColor, handleColor)
+			trackColor = getColor(R.styleable.FastScroller_trackColor, trackColor)
+			textColor = getColor(R.styleable.FastScroller_bubbleTextColor, textColor)
+			hideScrollbar = getBoolean(R.styleable.FastScroller_hideScrollbar, hideScrollbar)
+			showBubble = getBoolean(R.styleable.FastScroller_showBubble, showBubble)
+			showBubbleAlways = getBoolean(R.styleable.FastScroller_showBubbleAlways, showBubbleAlways)
+			showTrack = getBoolean(R.styleable.FastScroller_showTrack, showTrack)
+			bubbleSize = getBubbleSize(R.styleable.FastScroller_bubbleSize, BubbleSize.NORMAL)
+			val textSize = getDimension(R.styleable.FastScroller_bubbleTextSize, bubbleSize.textSize)
+			binding.bubble.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize)
+		}
+
+		setTrackColor(trackColor)
+		setHandleColor(handleColor)
+		setBubbleColor(bubbleColor)
+		setBubbleTextColor(textColor)
+		setHideScrollbar(hideScrollbar)
+		setBubbleVisible(showBubble, showBubbleAlways)
+		setTrackVisible(showTrack)
+	}
+
+	override fun onSizeChanged(w: Int, h: Int, oldW: Int, oldH: Int) {
+		super.onSizeChanged(w, h, oldW, oldH)
+		viewHeight = h
+	}
+
+	@SuppressLint("ClickableViewAccessibility")
+	override fun onTouchEvent(event: MotionEvent): Boolean {
+		val setYPositions: () -> Unit = {
+			val y = event.y
+			setViewPositions(y)
+			setRecyclerViewPosition(y)
+		}
+
+		when (event.actionMasked) {
+			MotionEvent.ACTION_DOWN -> {
+				if (event.x.toInt() !in binding.scrollbar.left..binding.scrollbar.right) return false
+
+				requestDisallowInterceptTouchEvent(true)
+				setHandleSelected(true)
+
+				handler.removeCallbacks(scrollbarHider)
+				showScrollbar()
+				if (showBubble && sectionIndexer != null) showBubble()
+
+				fastScrollListener?.onFastScrollStart(this)
+
+				setYPositions()
+				return true
+			}
+			MotionEvent.ACTION_MOVE -> {
+				setYPositions()
+				return true
+			}
+			MotionEvent.ACTION_UP, MotionEvent.ACTION_CANCEL -> {
+				requestDisallowInterceptTouchEvent(false)
+				setHandleSelected(false)
+
+				if (hideScrollbar) handler.postDelayed(scrollbarHider, SCROLLBAR_HIDE_DELAY)
+				if (!showBubbleAlways) hideBubble()
+
+				fastScrollListener?.onFastScrollStop(this)
+
+				return true
+			}
+		}
+
+		return super.onTouchEvent(event)
+	}
+
+	/**
+	 * Set the enabled state of this view.
+	 *
+	 * @param enabled True if this view is enabled, false otherwise
+	 */
+	override fun setEnabled(enabled: Boolean) {
+		super.setEnabled(enabled)
+		isVisible = enabled
+	}
+
+	/**
+	 * Set the [ViewGroup.LayoutParams] associated with this view. These supply
+	 * parameters to the *parent* of this view specifying how it should be arranged.
+	 *
+	 * @param params The [ViewGroup.LayoutParams] for this view, cannot be null
+	 */
+	override fun setLayoutParams(params: ViewGroup.LayoutParams) {
+		params.width = LayoutParams.WRAP_CONTENT
+		super.setLayoutParams(params)
+	}
+
+	/**
+	 * Set the [ViewGroup.LayoutParams] associated with this view. These supply
+	 * parameters to the *parent* of this view specifying how it should be arranged.
+	 *
+	 * @param viewGroup The parent [ViewGroup] for this view, cannot be null
+	 */
+	fun setLayoutParams(viewGroup: ViewGroup) {
+		val recyclerViewId = recyclerView?.id ?: NO_ID
+		val marginTop = resources.getDimensionPixelSize(R.dimen.fastscroll_scrollbar_margin_top)
+		val marginBottom = resources.getDimensionPixelSize(R.dimen.fastscroll_scrollbar_margin_bottom)
+
+		require(recyclerViewId != NO_ID) { "RecyclerView must have a view ID" }
+
+		when (viewGroup) {
+			is ConstraintLayout -> {
+				val endId = if (recyclerView?.parent === parent) recyclerViewId else ConstraintSet.PARENT_ID
+				val startId = id
+
+				ConstraintSet().apply {
+					clone(viewGroup)
+					connect(startId, ConstraintSet.TOP, endId, ConstraintSet.TOP)
+					connect(startId, ConstraintSet.BOTTOM, endId, ConstraintSet.BOTTOM)
+					connect(startId, ConstraintSet.END, endId, ConstraintSet.END)
+					applyTo(viewGroup)
+				}
+
+				layoutParams = (layoutParams as ConstraintLayout.LayoutParams).apply {
+					height = 0
+					setMargins(0, marginTop, 0, marginBottom)
+				}
+			}
+			is CoordinatorLayout -> layoutParams = (layoutParams as CoordinatorLayout.LayoutParams).apply {
+				height = LayoutParams.MATCH_PARENT
+				anchorGravity = GravityCompat.END
+				anchorId = recyclerViewId
+				setMargins(0, marginTop, 0, marginBottom)
+			}
+			is FrameLayout -> layoutParams = (layoutParams as FrameLayout.LayoutParams).apply {
+				height = LayoutParams.MATCH_PARENT
+				gravity = GravityCompat.END
+				setMargins(0, marginTop, 0, marginBottom)
+			}
+			is RelativeLayout -> layoutParams = (layoutParams as RelativeLayout.LayoutParams).apply {
+				height = 0
+				addRule(RelativeLayout.ALIGN_TOP, recyclerViewId)
+				addRule(RelativeLayout.ALIGN_BOTTOM, recyclerViewId)
+				addRule(RelativeLayout.ALIGN_END, recyclerViewId)
+				setMargins(0, marginTop, 0, marginBottom)
+			}
+			else -> throw IllegalArgumentException("Parent ViewGroup must be a ConstraintLayout, CoordinatorLayout, FrameLayout, or RelativeLayout")
+		}
+
+		updateViewHeights()
+	}
+
+	/**
+	 * Set the [RecyclerView] associated with this [FastScroller]. This allows the
+	 * FastScroller to set its layout parameters and listen for scroll changes.
+	 *
+	 * @param recyclerView The [RecyclerView] to attach, cannot be null
+	 * @see detachRecyclerView
+	 */
+	fun attachRecyclerView(recyclerView: RecyclerView) {
+		if (this.recyclerView != null) {
+			detachRecyclerView()
+		}
+		this.recyclerView = recyclerView
+
+		if (parent is ViewGroup) {
+			setLayoutParams(parent as ViewGroup)
+		} else if (recyclerView.parent is ViewGroup) {
+			val viewGroup = recyclerView.parent as ViewGroup
+			viewGroup.addView(this)
+			setLayoutParams(viewGroup)
+		}
+
+		recyclerView.addOnScrollListener(scrollListener)
+
+		// set initial positions for bubble and thumb
+		post { setViewPositions(this.recyclerView?.scrollProportion ?: 0f) }
+	}
+
+	/**
+	 * Clears references to the attached [RecyclerView] and stops listening for scroll changes.
+	 *
+	 * @see attachRecyclerView
+	 */
+	fun detachRecyclerView() {
+		recyclerView?.removeOnScrollListener(scrollListener)
+		recyclerView = null
+	}
+
+	/**
+	 * Set a new [FastScrollListener] that will listen to fast scroll events.
+	 *
+	 * @param fastScrollListener The new [FastScrollListener] to set, or null to set none
+	 */
+	fun setFastScrollListener(fastScrollListener: FastScrollListener?) {
+		this.fastScrollListener = fastScrollListener
+	}
+
+	/**
+	 * Set a new [SectionIndexer] that provides section text for this [FastScroller].
+	 *
+	 * @param sectionIndexer The new [SectionIndexer] to set, or null to set none
+	 */
+	fun setSectionIndexer(sectionIndexer: SectionIndexer?) {
+		this.sectionIndexer = sectionIndexer
+	}
+
+	/**
+	 * Hide the scrollbar when not scrolling.
+	 *
+	 * @param hideScrollbar True to hide the scrollbar, false to show
+	 */
+	fun setHideScrollbar(hideScrollbar: Boolean) {
+		if (this.hideScrollbar != hideScrollbar) {
+			this.hideScrollbar = hideScrollbar
+			binding.scrollbar.isGone = hideScrollbar
+		}
+	}
+
+	/**
+	 * Show the scroll track while scrolling.
+	 *
+	 * @param visible True to show scroll track, false to hide
+	 */
+	fun setTrackVisible(visible: Boolean) {
+		binding.track.isVisible = visible
+	}
+
+	/**
+	 * Set the color of the scroll track.
+	 *
+	 * @param color The color for the scroll track
+	 */
+	fun setTrackColor(@ColorInt color: Int) {
+		if (trackImage == null) {
+			trackImage = ContextCompat.getDrawable(context, R.drawable.fastscroll_track)
+		}
+
+		trackImage?.let {
+			it.setTint(color)
+			binding.track.setImageDrawable(it)
+		}
+	}
+
+	/**
+	 * Set the color of the scroll thumb.
+	 *
+	 * @param color The color for the scroll thumb
+	 */
+	fun setHandleColor(@ColorInt color: Int) {
+		handleColor = color
+
+		if (handleImage == null) {
+			handleImage = ContextCompat.getDrawable(context, R.drawable.fastscroll_handle)
+		}
+
+		handleImage?.let {
+			it.setTint(handleColor)
+			binding.thumb.setImageDrawable(it)
+		}
+	}
+
+	/**
+	 * Show the section bubble while scrolling.
+	 *
+	 * @param visible True to show the bubble, false to hide
+	 * @param always  True to always show the bubble, false to only show on thumb touch
+	 */
+	@JvmOverloads
+	fun setBubbleVisible(visible: Boolean, always: Boolean = false) {
+		showBubble = visible
+		showBubbleAlways = visible && always
+	}
+
+	/**
+	 * Set the background color of the section bubble.
+	 *
+	 * @param color The background color for the section bubble
+	 */
+	fun setBubbleColor(@ColorInt color: Int) {
+		bubbleColor = color
+
+		if (bubbleImage == null) {
+			bubbleImage = ContextCompat.getDrawable(context, bubbleSize.drawableId)
+		}
+
+		bubbleImage?.let {
+			it.setTint(bubbleColor)
+			binding.bubble.background = it
+		}
+	}
+
+	/**
+	 * Set the text color of the section bubble.
+	 *
+	 * @param color The text color for the section bubble
+	 */
+	fun setBubbleTextColor(@ColorInt color: Int) = binding.bubble.setTextColor(color)
+
+	/**
+	 * Set the scaled pixel text size of the section bubble.
+	 *
+	 * @param size The scaled pixel text size for the section bubble
+	 */
+	fun setBubbleTextSize(size: Int) {
+		binding.bubble.textSize = size.toFloat()
+	}
+
+	private fun getRecyclerViewTargetPosition(y: Float) = recyclerView?.let { recyclerView ->
+		val itemCount = recyclerView.adapter?.itemCount ?: 0
+
+		val proportion = when {
+			binding.thumb.y == 0f -> 0f
+			binding.thumb.y + handleHeight >= viewHeight - TRACK_SNAP_RANGE -> 1f
+			else -> y / viewHeight.toFloat()
+		}
+
+		var scrolledItemCount = (proportion * itemCount).roundToInt()
+
+		if (recyclerView.layoutManager.isLayoutReversed) {
+			scrolledItemCount = itemCount - scrolledItemCount
+		}
+
+		if (itemCount > 0) scrolledItemCount.coerceIn(0, itemCount - 1) else 0
+	} ?: 0
+
+	private fun setRecyclerViewPosition(y: Float) {
+		val layoutManager = recyclerView?.layoutManager ?: return
+		val targetPos = getRecyclerViewTargetPosition(y)
+		layoutManager.scrollToPosition(targetPos)
+		if (showBubble) sectionIndexer?.let { binding.bubble.text = it.getSectionText(context, targetPos) }
+	}
+
+	private fun setViewPositions(y: Float) {
+		bubbleHeight = binding.bubble.measuredHeight
+		handleHeight = binding.thumb.measuredHeight
+
+		val bubbleHandleHeight = bubbleHeight + handleHeight / 2f
+
+		if (showBubble && viewHeight >= bubbleHandleHeight) {
+			binding.bubble.y = (y - bubbleHeight).coerceIn(0f, viewHeight - bubbleHandleHeight)
+		}
+
+		if (viewHeight >= handleHeight) {
+			binding.thumb.y = (y - handleHeight / 2).coerceIn(0f, viewHeight - handleHeight.toFloat())
+		}
+	}
+
+	private fun updateViewHeights() {
+		val measureSpec = MeasureSpec.makeMeasureSpec(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED)
+		binding.bubble.measure(measureSpec, measureSpec)
+		bubbleHeight = binding.bubble.measuredHeight
+		binding.thumb.measure(measureSpec, measureSpec)
+		handleHeight = binding.thumb.measuredHeight
+	}
+
+	private fun showBubble() {
+		bubbleAnimator.show()
+	}
+
+	private fun hideBubble() {
+		bubbleAnimator.hide()
+	}
+
+	private fun showScrollbar() {
+		if (recyclerView?.run { canScrollVertically(1) || canScrollVertically(-1) } == true) {
+			scrollbarAnimator.show()
+		}
+	}
+
+	private fun hideScrollbar() {
+		scrollbarAnimator.hide()
+	}
+
+	private fun setHandleSelected(selected: Boolean) {
+		binding.thumb.isSelected = selected
+		handleImage?.setTint(if (selected) bubbleColor else handleColor)
+	}
+
+	private fun TypedArray.getBubbleSize(@StyleableRes index: Int, defaultValue: BubbleSize): BubbleSize {
+		val ordinal = getInt(index, -1)
+		return BubbleSize.values().getOrNull(ordinal) ?: defaultValue
+	}
+
+	private val BubbleSize.textSize
+		@Px get() = resources.getDimension(textSizeId)
+
+	interface FastScrollListener {
+
+		fun onFastScrollStart(fastScroller: FastScroller)
+
+		fun onFastScrollStop(fastScroller: FastScroller)
+	}
+
+	interface SectionIndexer {
+
+		fun getSectionText(context: Context, position: Int): CharSequence?
+	}
+}

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

@@ -0,0 +1,74 @@
+package org.koitharu.kotatsu.base.ui.list.fastscroll
+
+import android.animation.Animator
+import android.animation.AnimatorListenerAdapter
+import android.view.View
+import android.view.ViewPropertyAnimator
+import androidx.core.view.isInvisible
+import androidx.core.view.isVisible
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.utils.ext.animatorDurationScale
+
+class ScrollbarAnimator(
+	private val scrollbar: View,
+	private val scrollbarPaddingEnd: Float,
+) {
+
+	private val animationDuration = (
+		scrollbar.resources.getInteger(R.integer.config_defaultAnimTime) *
+			scrollbar.context.animatorDurationScale
+		).toLong()
+	private var animator: ViewPropertyAnimator? = null
+	private var isHiding = false
+
+	fun show() {
+		if (scrollbar.isVisible && !isHiding) {
+			return
+		}
+		isHiding = false
+		animator?.cancel()
+		scrollbar.translationX = scrollbarPaddingEnd
+		scrollbar.isVisible = true
+		animator = scrollbar
+			.animate()
+			.translationX(0f)
+			.alpha(1f)
+			.setListener(null)
+			.setDuration(animationDuration)
+	}
+
+	fun hide() {
+		if (!scrollbar.isVisible || isHiding) {
+			return
+		}
+		animator?.cancel()
+		isHiding = true
+		animator = scrollbar.animate().apply {
+			translationX(scrollbarPaddingEnd)
+			alpha(0f)
+			duration = animationDuration
+			setListener(HideListener(this))
+		}
+	}
+
+	private inner class HideListener(
+		private val viewPropertyAnimator: ViewPropertyAnimator,
+	) : AnimatorListenerAdapter() {
+
+		private var isCancelled = false
+
+		override fun onAnimationCancel(animation: Animator) {
+			super.onAnimationCancel(animation)
+			isCancelled = true
+		}
+
+		override fun onAnimationEnd(animation: Animator) {
+			super.onAnimationEnd(animation)
+			if (!isCancelled && this@ScrollbarAnimator.animator === viewPropertyAnimator) {
+				scrollbar.isInvisible = true
+				isHiding = false
+				this@ScrollbarAnimator.animator = null
+			}
+		}
+	}
+}

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

@@ -0,0 +1,27 @@
+package org.koitharu.kotatsu.base.ui.util
+
+import android.app.Activity
+import android.os.Bundle
+import org.koitharu.kotatsu.base.ui.DefaultActivityLifecycleCallbacks
+import java.util.WeakHashMap
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Singleton
+class ActivityRecreationHandle @Inject constructor() : DefaultActivityLifecycleCallbacks {
+
+	private val activities = WeakHashMap<Activity, Unit>()
+
+	override fun onActivityCreated(activity: Activity, savedInstanceState: Bundle?) {
+		activities[activity] = Unit
+	}
+
+	override fun onActivityDestroyed(activity: Activity) {
+		activities.remove(activity)
+	}
+
+	fun recreateAll() {
+		val snapshot = activities.keys.toList()
+		snapshot.forEach { it.recreate() }
+	}
+}

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

@@ -0,0 +1,18 @@
+package org.koitharu.kotatsu.base.ui.util
+
+import dagger.hilt.EntryPoint
+import dagger.hilt.InstallIn
+import dagger.hilt.components.SingletonComponent
+import org.koitharu.kotatsu.base.ui.BaseActivity
+import org.koitharu.kotatsu.core.prefs.AppSettings
+
+@EntryPoint
+@InstallIn(SingletonComponent::class)
+interface BaseActivityEntryPoint {
+	val settings: AppSettings
+}
+
+// Hilt cannot inject into parametrized classes
+fun BaseActivityEntryPoint.inject(activity: BaseActivity<*>) {
+	activity.settings = settings
+}

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

@@ -1,20 +1,31 @@
 package org.koitharu.kotatsu.base.ui.util
 
-import androidx.lifecycle.MutableLiveData
+import androidx.annotation.AnyThread
+import androidx.lifecycle.LiveData
+import java.util.concurrent.atomic.AtomicInteger
 
-class CountedBooleanLiveData : MutableLiveData<Boolean>(false) {
+class CountedBooleanLiveData : LiveData<Boolean>(false) {
 
-	private var counter = 0
+	private val counter = AtomicInteger(0)
 
-	override fun setValue(value: Boolean) {
-		if (value) {
-			counter++
-		} else {
-			counter--
+	@AnyThread
+	fun increment() {
+		if (counter.getAndIncrement() == 0) {
+			postValue(true)
 		}
-		val newValue = counter > 0
-		if (newValue != this.value) {
-			super.setValue(newValue)
+	}
+
+	@AnyThread
+	fun decrement() {
+		if (counter.decrementAndGet() == 0) {
+			postValue(false)
+		}
+	}
+
+	@AnyThread
+	fun reset() {
+		if (counter.getAndSet(0) != 0) {
+			postValue(false)
 		}
 	}
 }

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

@@ -0,0 +1,9 @@
+package org.koitharu.kotatsu.base.ui.util
+
+import androidx.annotation.StringRes
+import org.koitharu.kotatsu.base.domain.ReversibleHandle
+
+class ReversibleAction(
+	@StringRes val stringResId: Int,
+	val handle: ReversibleHandle?,
+)

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

@@ -8,10 +8,12 @@ import androidx.coordinatorlayout.widget.CoordinatorLayout.Behavior
 import androidx.core.view.ViewCompat
 import com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton
 
-class ShrinkOnScrollBehavior : Behavior<ExtendedFloatingActionButton> {
+open class ShrinkOnScrollBehavior : Behavior<ExtendedFloatingActionButton> {
 
-	@Suppress("unused") constructor() : super()
-	@Suppress("unused") constructor(context: Context?, attrs: AttributeSet?) : super(context, attrs)
+	@Suppress("unused")
+	constructor() : super()
+	@Suppress("unused")
+	constructor(context: Context?, attrs: AttributeSet?) : super(context, attrs)
 
 	override fun onStartNestedScroll(
 		coordinatorLayout: CoordinatorLayout,
@@ -45,4 +47,4 @@ class ShrinkOnScrollBehavior : Behavior<ExtendedFloatingActionButton> {
 			}
 		}
 	}
-}
+}

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

@@ -0,0 +1,42 @@
+package org.koitharu.kotatsu.base.ui.util
+
+import android.animation.ValueAnimator
+import android.view.animation.AccelerateDecelerateInterpolator
+import com.google.android.material.R as materialR
+import com.google.android.material.appbar.AppBarLayout
+import com.google.android.material.shape.MaterialShapeDrawable
+import org.koitharu.kotatsu.utils.ext.getAnimationDuration
+
+class StatusBarDimHelper : AppBarLayout.OnOffsetChangedListener {
+
+	private var animator: ValueAnimator? = null
+	private val interpolator = AccelerateDecelerateInterpolator()
+
+	override fun onOffsetChanged(appBarLayout: AppBarLayout, verticalOffset: Int) {
+		val foreground = appBarLayout.statusBarForeground ?: return
+		val start = foreground.alpha
+		val collapsed = verticalOffset != 0
+		val end = if (collapsed) 255 else 0
+		animator?.cancel()
+		if (start == end) {
+			animator = null
+			return
+		}
+		animator = ValueAnimator.ofInt(start, end).apply {
+			duration = appBarLayout.context.getAnimationDuration(materialR.integer.app_bar_elevation_anim_duration)
+			interpolator = this@StatusBarDimHelper.interpolator
+			addUpdateListener {
+				foreground.alpha = it.animatedValue as Int
+			}
+			start()
+		}
+	}
+
+	fun attachToAppBar(appBarLayout: AppBarLayout) {
+		appBarLayout.addOnOffsetChangedListener(this)
+		appBarLayout.statusBarForeground =
+			MaterialShapeDrawable.createWithElevationOverlay(appBarLayout.context).apply {
+				alpha = 0
+			}
+	}
+}

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

@@ -16,10 +16,7 @@ class WindowInsetsDelegate(
 
 	private var lastInsets: Insets? = null
 
-	override fun onApplyWindowInsets(v: View?, insets: WindowInsetsCompat?): WindowInsetsCompat? {
-		if (insets == null) {
-			return null
-		}
+	override fun onApplyWindowInsets(v: View, insets: WindowInsetsCompat): WindowInsetsCompat {
 		val handledInsets = interceptingWindowInsetsListener?.onApplyWindowInsets(v, insets) ?: insets
 		val newInsets = if (handleImeInsets) {
 			Insets.max(
@@ -49,7 +46,7 @@ class WindowInsetsDelegate(
 	) {
 		view.removeOnLayoutChangeListener(this)
 		if (lastInsets == null) { // Listener may not be called
-			onApplyWindowInsets(view, ViewCompat.getRootWindowInsets(view))
+			onApplyWindowInsets(view, ViewCompat.getRootWindowInsets(view) ?: return)
 		}
 	}
 

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

@@ -0,0 +1,302 @@
+package org.koitharu.kotatsu.base.ui.widgets
+
+import android.animation.LayoutTransition
+import android.content.Context
+import android.util.AttributeSet
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.view.WindowInsets
+import androidx.annotation.AttrRes
+import androidx.annotation.StringRes
+import androidx.appcompat.widget.Toolbar
+import androidx.coordinatorlayout.widget.CoordinatorLayout
+import androidx.core.content.withStyledAttributes
+import androidx.core.view.*
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.LifecycleOwner
+import com.google.android.material.R as materialR
+import com.google.android.material.appbar.AppBarLayout
+import com.google.android.material.appbar.MaterialToolbar
+import com.google.android.material.bottomsheet.BottomSheetBehavior
+import java.util.*
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.databinding.LayoutSheetHeaderBinding
+import org.koitharu.kotatsu.utils.ext.getAnimationDuration
+import org.koitharu.kotatsu.utils.ext.getThemeDrawable
+import org.koitharu.kotatsu.utils.ext.parents
+
+private const val THROTTLE_DELAY = 200L
+
+class BottomSheetHeaderBar @JvmOverloads constructor(
+	context: Context,
+	attrs: AttributeSet? = null,
+	@AttrRes defStyleAttr: Int = materialR.attr.appBarLayoutStyle,
+) : AppBarLayout(context, attrs, defStyleAttr), MenuHost {
+
+	private val binding = LayoutSheetHeaderBinding.inflate(LayoutInflater.from(context), this)
+	private val closeDrawable = context.getThemeDrawable(materialR.attr.actionModeCloseDrawable)
+	private val bottomSheetCallback = Callback()
+	private val adjustStateRunnable = Runnable { adjustState() }
+	private var bottomSheetBehavior: BottomSheetBehavior<*>? = null
+	private val locationBuffer = IntArray(2)
+	private val expansionListeners = LinkedList<OnExpansionChangeListener>()
+	private var fitStatusBar = false
+	private val minHandleHeight = context.resources.getDimensionPixelSize(R.dimen.bottom_sheet_handle_size_min)
+	private val maxHandleHeight = context.resources.getDimensionPixelSize(R.dimen.bottom_sheet_handle_size_max)
+	private var isLayoutSuppressedCompat = false
+	private var isLayoutCalledWhileSuppressed = false
+	private var isBsExpanded = false
+	private var stateAdjustedAt = 0L
+
+	@Deprecated("")
+	val toolbar: MaterialToolbar
+		get() = binding.toolbar
+
+	var title: CharSequence?
+		get() = binding.toolbar.title
+		set(value) {
+			binding.toolbar.title = value
+		}
+
+	var subtitle: CharSequence?
+		get() = binding.toolbar.subtitle
+		set(value) {
+			binding.toolbar.subtitle = value
+		}
+
+	init {
+		setBackgroundResource(R.drawable.sheet_toolbar_background)
+		layoutTransition = LayoutTransition().apply {
+			setDuration(context.getAnimationDuration(R.integer.config_tinyAnimTime))
+		}
+		context.withStyledAttributes(attrs, R.styleable.BottomSheetHeaderBar, defStyleAttr) {
+			binding.toolbar.title = getString(R.styleable.BottomSheetHeaderBar_title)
+			fitStatusBar = getBoolean(R.styleable.BottomSheetHeaderBar_fitStatusBar, fitStatusBar)
+			val menuResId = getResourceId(R.styleable.BottomSheetHeaderBar_menu, 0)
+			if (menuResId != 0) {
+				binding.toolbar.inflateMenu(menuResId)
+			}
+		}
+		binding.toolbar.setNavigationOnClickListener(bottomSheetCallback)
+	}
+
+	override fun onAttachedToWindow() {
+		super.onAttachedToWindow()
+		setBottomSheetBehavior(findParentBottomSheetBehavior())
+	}
+
+	override fun onDetachedFromWindow() {
+		setBottomSheetBehavior(null)
+		super.onDetachedFromWindow()
+	}
+
+	override fun addView(child: View?, index: Int) {
+		if (shouldAddView(child)) {
+			super.addView(child, index)
+		} else {
+			binding.toolbar.addView(child, index)
+		}
+	}
+
+	override fun addView(child: View?, width: Int, height: Int) {
+		if (shouldAddView(child)) {
+			super.addView(child, width, height)
+		} else {
+			binding.toolbar.addView(child, width, height)
+		}
+	}
+
+	override fun addView(child: View?, index: Int, params: ViewGroup.LayoutParams?) {
+		if (shouldAddView(child)) {
+			super.addView(child, index, params)
+		} else {
+			binding.toolbar.addView(child, index, convertLayoutParams(params))
+		}
+	}
+
+	override fun onApplyWindowInsets(insets: WindowInsets?): WindowInsets {
+		dispatchInsets(if (insets != null) WindowInsetsCompat.toWindowInsetsCompat(insets) else null)
+		return super.onApplyWindowInsets(insets)
+	}
+
+	override fun addMenuProvider(provider: MenuProvider) {
+		binding.toolbar.addMenuProvider(provider)
+	}
+
+	override fun addMenuProvider(provider: MenuProvider, owner: LifecycleOwner) {
+		binding.toolbar.addMenuProvider(provider, owner)
+	}
+
+	override fun addMenuProvider(provider: MenuProvider, owner: LifecycleOwner, state: Lifecycle.State) {
+		binding.toolbar.addMenuProvider(provider, owner, state)
+	}
+
+	override fun removeMenuProvider(provider: MenuProvider) {
+		binding.toolbar.removeMenuProvider(provider)
+	}
+
+	override fun invalidateMenu() {
+		binding.toolbar.invalidateMenu()
+	}
+
+	fun setNavigationOnClickListener(onClickListener: OnClickListener) {
+		binding.toolbar.setNavigationOnClickListener(onClickListener)
+	}
+
+	fun addOnExpansionChangeListener(listener: OnExpansionChangeListener) {
+		expansionListeners.add(listener)
+	}
+
+	fun removeOnExpansionChangeListener(listener: OnExpansionChangeListener) {
+		expansionListeners.remove(listener)
+	}
+
+	fun setTitle(@StringRes resId: Int) {
+		binding.toolbar.setTitle(resId)
+	}
+
+	fun setSubtitle(@StringRes resId: Int) {
+		binding.toolbar.setSubtitle(resId)
+	}
+
+	override fun onLayout(changed: Boolean, l: Int, t: Int, r: Int, b: Int) {
+		if (isLayoutSuppressedCompat) {
+			isLayoutCalledWhileSuppressed = true
+		} else {
+			super.onLayout(changed, l, t, r, b)
+		}
+	}
+
+	private fun setBottomSheetBehavior(behavior: BottomSheetBehavior<*>?) {
+		bottomSheetBehavior?.removeBottomSheetCallback(bottomSheetCallback)
+		bottomSheetBehavior = behavior
+		if (behavior != null) {
+			onBottomSheetStateChanged(behavior.state)
+			behavior.addBottomSheetCallback(bottomSheetCallback)
+		}
+	}
+
+	private fun onBottomSheetStateChanged(newState: Int) {
+		val expanded = newState == BottomSheetBehavior.STATE_EXPANDED && isOnTopOfScreen()
+		if (isBsExpanded != expanded) {
+			isBsExpanded = expanded
+			postAdjustState()
+		}
+	}
+
+	private fun suppressLayoutCompat(suppress: Boolean) {
+		if (suppress == isLayoutSuppressedCompat) return
+		isLayoutSuppressedCompat = suppress
+		if (!suppress && isLayoutCalledWhileSuppressed) {
+			requestLayout()
+		}
+		isLayoutCalledWhileSuppressed = false
+	}
+
+	private fun dispatchInsets(insets: WindowInsetsCompat?) {
+		if (!fitStatusBar) {
+			return
+		}
+		val isExpanded = binding.dragHandle.isGone
+		val topInset = insets?.getInsets(WindowInsetsCompat.Type.systemBars())?.top ?: 0
+		if (isExpanded) {
+			updatePadding(top = topInset)
+		} else {
+			updatePadding(top = 0)
+			binding.dragHandle.updateLayoutParams {
+				height = topInset.coerceIn(minHandleHeight, maxHandleHeight)
+			}
+		}
+	}
+
+	private fun findParentBottomSheetBehavior(): BottomSheetBehavior<*>? {
+		for (p in parents) {
+			val layoutParams = (p as? View)?.layoutParams
+			if (layoutParams is CoordinatorLayout.LayoutParams) {
+				val behavior = layoutParams.behavior
+				if (behavior is BottomSheetBehavior<*>) {
+					return behavior
+				}
+			}
+		}
+		return null
+	}
+
+	private fun isOnTopOfScreen(): Boolean {
+		getLocationInWindow(locationBuffer)
+		val topInset = ViewCompat.getRootWindowInsets(this)
+			?.getInsets(WindowInsetsCompat.Type.systemBars())?.top ?: 0
+		val zeroTop = (layoutParams as? MarginLayoutParams)?.topMargin ?: 0
+		return (locationBuffer[1] - topInset) <= zeroTop
+	}
+
+	private fun dismissBottomSheet() {
+		val behavior = bottomSheetBehavior ?: return
+		if (behavior.isHideable) {
+			behavior.state = BottomSheetBehavior.STATE_HIDDEN
+		} else {
+			behavior.state = BottomSheetBehavior.STATE_COLLAPSED
+		}
+	}
+
+	private fun shouldAddView(child: View?): Boolean {
+		if (child == null) {
+			return true
+		}
+		val viewId = child.id
+		return viewId == R.id.dragHandle || viewId == R.id.toolbar
+	}
+
+	private fun convertLayoutParams(params: ViewGroup.LayoutParams?): Toolbar.LayoutParams? {
+		return when (params) {
+			null -> null
+			is MarginLayoutParams -> {
+				val lp = Toolbar.LayoutParams(params)
+				if (params is LayoutParams) {
+					lp.gravity = params.gravity
+				}
+				lp
+			}
+			else -> Toolbar.LayoutParams(params)
+		}
+	}
+
+	private fun postAdjustState() {
+		removeCallbacks(adjustStateRunnable)
+		val now = System.currentTimeMillis()
+		if (stateAdjustedAt + THROTTLE_DELAY < now) {
+			adjustState()
+		} else {
+			postDelayed(adjustStateRunnable, THROTTLE_DELAY)
+		}
+	}
+
+	private fun adjustState() {
+		suppressLayoutCompat(true)
+		binding.toolbar.navigationIcon = (if (isBsExpanded) closeDrawable else null)
+		binding.dragHandle.isGone = isBsExpanded
+		expansionListeners.forEach { it.onExpansionStateChanged(this, isBsExpanded) }
+		dispatchInsets(ViewCompat.getRootWindowInsets(this))
+		stateAdjustedAt = System.currentTimeMillis()
+		suppressLayoutCompat(false)
+	}
+
+	private inner class Callback : BottomSheetBehavior.BottomSheetCallback(), View.OnClickListener {
+
+		override fun onStateChanged(bottomSheet: View, newState: Int) {
+			onBottomSheetStateChanged(newState)
+		}
+
+		override fun onSlide(bottomSheet: View, slideOffset: Float) = Unit
+
+		override fun onClick(v: View?) {
+			dismissBottomSheet()
+		}
+	}
+
+	fun interface OnExpansionChangeListener {
+
+		fun onExpansionStateChanged(headerBar: BottomSheetHeaderBar, isExpanded: Boolean)
+	}
+}

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

@@ -8,23 +8,33 @@ import android.widget.LinearLayout
 import androidx.annotation.AttrRes
 import androidx.annotation.IdRes
 import androidx.core.view.children
+import com.google.android.material.R as materialR
 import com.google.android.material.button.MaterialButton
+import com.google.android.material.shape.ShapeAppearanceModel
 
 class CheckableButtonGroup @JvmOverloads constructor(
 	context: Context,
 	attrs: AttributeSet? = null,
-	@AttrRes defStyleAttr: Int = 0,
-) : LinearLayout(context, attrs, defStyleAttr), View.OnClickListener {
+	@AttrRes defStyleAttr: Int = materialR.attr.materialButtonToggleGroupStyle,
+) : LinearLayout(context, attrs, defStyleAttr, materialR.style.Widget_MaterialComponents_MaterialButtonToggleGroup),
+	View.OnClickListener {
+
+	private val originalCornerData = ArrayList<CornerData>()
 
 	var onCheckedChangeListener: OnCheckedChangeListener? = null
 
 	override fun addView(child: View?, index: Int, params: ViewGroup.LayoutParams?) {
 		if (child is MaterialButton) {
-			child.setOnClickListener(this)
+			setupButton(child)
 		}
 		super.addView(child, index, params)
 	}
 
+	override fun onFinishInflate() {
+		super.onFinishInflate()
+		updateChildShapes()
+	}
+
 	override fun onClick(v: View) {
 		setCheckedId(v.id)
 	}
@@ -36,7 +46,74 @@ class CheckableButtonGroup @JvmOverloads constructor(
 		onCheckedChangeListener?.onCheckedChanged(this, viewRes)
 	}
 
+	private fun updateChildShapes() {
+		val childCount = childCount
+		val firstVisibleChildIndex = 0
+		val lastVisibleChildIndex = childCount - 1
+		for (i in 0 until childCount) {
+			val button: MaterialButton = getChildAt(i) as? MaterialButton ?: continue
+			if (button.visibility == GONE) {
+				continue
+			}
+			val builder = button.shapeAppearanceModel.toBuilder()
+			val newCornerData: CornerData? =
+				getNewCornerData(i, firstVisibleChildIndex, lastVisibleChildIndex)
+			updateBuilderWithCornerData(builder, newCornerData)
+			button.shapeAppearanceModel = builder.build()
+		}
+	}
+
+	private fun setupButton(button: MaterialButton) {
+		button.setOnClickListener(this)
+		button.isElegantTextHeight = false
+		// Saves original corner data
+		val shapeAppearanceModel: ShapeAppearanceModel = button.shapeAppearanceModel
+		originalCornerData.add(
+			CornerData(
+				shapeAppearanceModel.topLeftCornerSize,
+				shapeAppearanceModel.bottomLeftCornerSize,
+				shapeAppearanceModel.topRightCornerSize,
+				shapeAppearanceModel.bottomRightCornerSize,
+			),
+		)
+	}
+
+	private fun getNewCornerData(
+		index: Int,
+		firstVisibleChildIndex: Int,
+		lastVisibleChildIndex: Int,
+	): CornerData? {
+		val cornerData: CornerData = originalCornerData.get(index)
+
+		// If only one (visible) child exists, use its original corners
+		if (firstVisibleChildIndex == lastVisibleChildIndex) {
+			return cornerData
+		}
+		val isHorizontal = orientation == HORIZONTAL
+		if (index == firstVisibleChildIndex) {
+			return if (isHorizontal) cornerData.start(this) else cornerData.top()
+		}
+		return if (index == lastVisibleChildIndex) {
+			if (isHorizontal) cornerData.end(this) else cornerData.bottom()
+		} else null
+	}
+
+	private fun updateBuilderWithCornerData(
+		shapeAppearanceModelBuilder: ShapeAppearanceModel.Builder,
+		cornerData: CornerData?,
+	) {
+		if (cornerData == null) {
+			shapeAppearanceModelBuilder.setAllCornerSizes(0f)
+			return
+		}
+		shapeAppearanceModelBuilder
+			.setTopLeftCornerSize(cornerData.topLeft)
+			.setBottomLeftCornerSize(cornerData.bottomLeft)
+			.setTopRightCornerSize(cornerData.topRight)
+			.setBottomRightCornerSize(cornerData.bottomRight)
+	}
+
 	fun interface OnCheckedChangeListener {
 		fun onCheckedChanged(group: CheckableButtonGroup, checkedId: Int)
 	}
-}
+}

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

@@ -10,6 +10,7 @@ import android.widget.Checkable
 import androidx.annotation.AttrRes
 import androidx.appcompat.widget.AppCompatImageView
 import androidx.core.os.ParcelCompat
+import androidx.customview.view.AbsSavedState
 
 class CheckableImageView @JvmOverloads constructor(
 	context: Context,
@@ -73,7 +74,7 @@ class CheckableImageView @JvmOverloads constructor(
 		fun onCheckedChanged(view: CheckableImageView, isChecked: Boolean)
 	}
 
-	private class SavedState : BaseSavedState {
+	private class SavedState : AbsSavedState {
 
 		val isChecked: Boolean
 
@@ -81,7 +82,7 @@ class CheckableImageView @JvmOverloads constructor(
 			isChecked = checked
 		}
 
-		constructor(source: Parcel) : super(source) {
+		constructor(source: Parcel, classLoader: ClassLoader?) : super(source, classLoader) {
 			isChecked = ParcelCompat.readBoolean(source)
 		}
 
@@ -91,9 +92,10 @@ class CheckableImageView @JvmOverloads constructor(
 		}
 
 		companion object {
+			@Suppress("unused")
 			@JvmField
 			val CREATOR: Creator<SavedState> = object : Creator<SavedState> {
-				override fun createFromParcel(`in`: Parcel) = SavedState(`in`)
+				override fun createFromParcel(`in`: Parcel) = SavedState(`in`, SavedState::class.java.classLoader)
 
 				override fun newArray(size: Int): Array<SavedState?> = arrayOfNulls(size)
 			}

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

@@ -5,23 +5,26 @@ import android.util.AttributeSet
 import android.view.View.OnClickListener
 import androidx.annotation.DrawableRes
 import androidx.core.view.children
+import com.google.android.material.R as materialR
 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
+import org.koitharu.kotatsu.utils.ext.castOrNull
+import org.koitharu.kotatsu.utils.ext.getThemeColorStateList
 
 class ChipsView @JvmOverloads constructor(
 	context: Context,
 	attrs: AttributeSet? = null,
-	defStyleAttr: Int = com.google.android.material.R.attr.chipGroupStyle
+	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 {
+	private val chipOnClickListener = OnClickListener {
 		onChipClickListener?.onChipClick(it as Chip, it.tag)
 	}
-	private var chipOnCloseListener = OnClickListener {
+	private val chipOnCloseListener = OnClickListener {
 		onChipCloseClickListener?.onChipCloseClick(it as Chip, it.tag)
 	}
 	var onChipClickListener: OnChipClickListener? = null
@@ -60,15 +63,27 @@ class ChipsView @JvmOverloads constructor(
 		}
 	}
 
+	fun <T> getCheckedData(cls: Class<T>): Set<T> {
+		val result = LinkedHashSet<T>(childCount)
+		for (child in children) {
+			if (child is Chip && child.isChecked) {
+				result += cls.castOrNull(child.tag) ?: continue
+			}
+		}
+		return result
+	}
+
 	private fun bindChip(chip: Chip, model: ChipModel) {
 		chip.text = model.title
 		if (model.icon == 0) {
 			chip.isChipIconVisible = false
 		} else {
-			chip.isCheckedIconVisible = true
+			chip.isChipIconVisible = true
 			chip.setChipIconResource(model.icon)
 		}
-		chip.isClickable = onChipClickListener != null
+		chip.isClickable = onChipClickListener != null || model.isCheckable
+		chip.isCheckable = model.isCheckable
+		chip.isChecked = model.isChecked
 		chip.tag = model.data
 	}
 
@@ -76,11 +91,13 @@ class ChipsView @JvmOverloads constructor(
 		val chip = Chip(context)
 		val drawable = ChipDrawable.createFromAttributes(context, null, 0, R.style.Widget_Kotatsu_Chip)
 		chip.setChipDrawable(drawable)
+		chip.isCheckedIconVisible = true
+		chip.setCheckedIconResource(R.drawable.ic_check)
+		chip.checkedIconTint = context.getThemeColorStateList(materialR.attr.colorControlNormal)
 		chip.isCloseIconVisible = onChipCloseClickListener != null
 		chip.setOnCloseIconClickListener(chipOnCloseListener)
 		chip.setEnsureMinTouchTargetSize(false)
 		chip.setOnClickListener(chipOnClickListener)
-		chip.isCheckable = false
 		addView(chip)
 		return chip
 	}
@@ -98,7 +115,9 @@ class ChipsView @JvmOverloads constructor(
 	class ChipModel(
 		@DrawableRes val icon: Int,
 		val title: CharSequence,
-		val data: Any? = null
+		val isCheckable: Boolean,
+		val isChecked: Boolean,
+		val data: Any? = null,
 	) {
 
 		override fun equals(other: Any?): Boolean {
@@ -109,6 +128,8 @@ class ChipsView @JvmOverloads constructor(
 
 			if (icon != other.icon) return false
 			if (title != other.title) return false
+			if (isCheckable != other.isCheckable) return false
+			if (isChecked != other.isChecked) return false
 			if (data != other.data) return false
 
 			return true
@@ -117,7 +138,9 @@ class ChipsView @JvmOverloads constructor(
 		override fun hashCode(): Int {
 			var result = icon
 			result = 31 * result + title.hashCode()
-			result = 31 * result + data.hashCode()
+			result = 31 * result + isCheckable.hashCode()
+			result = 31 * result + isChecked.hashCode()
+			result = 31 * result + (data?.hashCode() ?: 0)
 			return result
 		}
 	}
@@ -131,4 +154,4 @@ class ChipsView @JvmOverloads constructor(
 
 		fun onChipCloseClick(chip: Chip, data: Any?)
 	}
-}
+}

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

@@ -0,0 +1,47 @@
+package org.koitharu.kotatsu.base.ui.widgets
+
+import android.view.View
+import androidx.core.view.ViewCompat
+import com.google.android.material.shape.AbsoluteCornerSize
+import com.google.android.material.shape.CornerSize
+
+class CornerData(
+	var topLeft: CornerSize,
+	var bottomLeft: CornerSize,
+	var topRight: CornerSize,
+	var bottomRight: CornerSize,
+) {
+
+	fun start(view: View): CornerData {
+		return if (isLayoutRtl(view)) right() else left()
+	}
+
+	fun end(view: View): CornerData {
+		return if (isLayoutRtl(view)) left() else right()
+	}
+
+	fun left(): CornerData {
+		return CornerData(topLeft, bottomLeft, noCorner, noCorner)
+	}
+
+	fun right(): CornerData {
+		return CornerData(noCorner, noCorner, topRight, bottomRight)
+	}
+
+	fun top(): CornerData {
+		return CornerData(topLeft, noCorner, topRight, noCorner)
+	}
+
+	fun bottom(): CornerData {
+		return CornerData(noCorner, bottomLeft, noCorner, bottomRight)
+	}
+
+	private companion object {
+
+		val noCorner: CornerSize = AbsoluteCornerSize(0f)
+
+		fun isLayoutRtl(view: View): Boolean {
+			return ViewCompat.getLayoutDirection(view) == ViewCompat.LAYOUT_DIRECTION_RTL
+		}
+	}
+}

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

@@ -1,94 +0,0 @@
-/*
- * 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/HideBottomNavigationOnScrollBehavior.kt

@@ -0,0 +1,101 @@
+package org.koitharu.kotatsu.base.ui.widgets
+
+import android.animation.ValueAnimator
+import android.content.Context
+import android.util.AttributeSet
+import android.view.View
+import android.view.animation.DecelerateInterpolator
+import androidx.coordinatorlayout.widget.CoordinatorLayout
+import androidx.core.view.ViewCompat
+import com.google.android.material.appbar.AppBarLayout
+import com.google.android.material.bottomnavigation.BottomNavigationView
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.utils.ext.getAnimationDuration
+import org.koitharu.kotatsu.utils.ext.measureHeight
+
+class HideBottomNavigationOnScrollBehavior @JvmOverloads constructor(
+	context: Context? = null,
+	attrs: AttributeSet? = null,
+) : CoordinatorLayout.Behavior<BottomNavigationView>(context, attrs) {
+
+	@ViewCompat.NestedScrollType
+	private var lastStartedType: Int = 0
+
+	private var offsetAnimator: ValueAnimator? = null
+
+	private var dyRatio = 1F
+
+	override fun layoutDependsOn(parent: CoordinatorLayout, child: BottomNavigationView, dependency: View): Boolean {
+		return dependency is AppBarLayout
+	}
+
+	override fun onDependentViewChanged(
+		parent: CoordinatorLayout,
+		child: BottomNavigationView,
+		dependency: View,
+	): Boolean {
+		val appBarSize = dependency.measureHeight()
+		dyRatio = if (appBarSize > 0) {
+			child.measureHeight().toFloat() / appBarSize
+		} else {
+			1F
+		}
+		return false
+	}
+
+	override fun onStartNestedScroll(
+		coordinatorLayout: CoordinatorLayout,
+		child: BottomNavigationView,
+		directTargetChild: View,
+		target: View,
+		axes: Int,
+		type: Int,
+	): Boolean {
+		if (axes != ViewCompat.SCROLL_AXIS_VERTICAL) {
+			return false
+		}
+		lastStartedType = type
+		offsetAnimator?.cancel()
+		return true
+	}
+
+	override fun onNestedPreScroll(
+		coordinatorLayout: CoordinatorLayout,
+		child: BottomNavigationView,
+		target: View,
+		dx: Int,
+		dy: Int,
+		consumed: IntArray,
+		type: Int,
+	) {
+		super.onNestedPreScroll(coordinatorLayout, child, target, dx, dy, consumed, type)
+		child.translationY = (child.translationY + (dy * dyRatio)).coerceIn(0F, child.height.toFloat())
+	}
+
+	override fun onStopNestedScroll(
+		coordinatorLayout: CoordinatorLayout,
+		child: BottomNavigationView,
+		target: View,
+		type: Int,
+	) {
+		if (lastStartedType == ViewCompat.TYPE_TOUCH || type == ViewCompat.TYPE_NON_TOUCH) {
+			animateBottomNavigationVisibility(child, child.translationY < child.height / 2)
+		}
+	}
+
+	private fun animateBottomNavigationVisibility(child: BottomNavigationView, isVisible: Boolean) {
+		offsetAnimator?.cancel()
+		offsetAnimator = ValueAnimator().apply {
+			interpolator = DecelerateInterpolator()
+			duration = child.context.getAnimationDuration(R.integer.config_shorterAnimTime)
+			addUpdateListener {
+				child.translationY = it.animatedValue as Float
+			}
+		}
+		offsetAnimator?.setFloatValues(
+			child.translationY,
+			if (isVisible) 0F else child.height.toFloat(),
+		)
+		offsetAnimator?.start()
+	}
+}

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

@@ -9,16 +9,17 @@ 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.graphics.drawable.shapes.RoundRectShape
 import android.util.AttributeSet
 import androidx.annotation.AttrRes
 import androidx.appcompat.widget.AppCompatCheckedTextView
+import androidx.core.content.ContextCompat
 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
+import org.koitharu.kotatsu.utils.ext.resolveDp
 
 @SuppressLint("RestrictedApi")
 class ListItemTextView @JvmOverloads constructor(
@@ -36,13 +37,13 @@ class ListItemTextView @JvmOverloads constructor(
 
 	init {
 		context.withStyledAttributes(attrs, R.styleable.ListItemTextView, defStyleAttr) {
-			val itemRippleColor = getColorStateList(R.styleable.ListItemTextView_rippleColor)
-				?: getRippleColorFallback(context)
+			val itemRippleColor = getRippleColor(context)
 			val shape = createShapeDrawable(this)
+			val roundCorners = FloatArray(8) { resources.resolveDp(32f) }
 			background = RippleDrawable(
 				RippleUtils.sanitizeRippleDrawableColor(itemRippleColor),
 				shape,
-				ShapeDrawable(RectShape()),
+				ShapeDrawable(RoundRectShape(roundCorners, null, null)),
 			)
 			checkedDrawableStart = getDrawable(R.styleable.ListItemTextView_checkedDrawableStart)
 			checkedDrawableEnd = getDrawable(R.styleable.ListItemTextView_checkedDrawableEnd)
@@ -108,7 +109,7 @@ class ListItemTextView @JvmOverloads constructor(
 			ta.getResourceId(R.styleable.ListItemTextView_shapeAppearanceOverlay, 0),
 		).build()
 		val shapeDrawable = MaterialShapeDrawable(shapeAppearance)
-		shapeDrawable.fillColor = ta.getColorStateList(R.styleable.ListItemTextView_backgroundTint)
+		shapeDrawable.fillColor = ta.getColorStateList(R.styleable.ListItemTextView_backgroundFillColor)
 		return InsetDrawable(
 			shapeDrawable,
 			ta.getDimensionPixelOffset(R.styleable.ListItemTextView_android_insetLeft, 0),
@@ -118,8 +119,8 @@ class ListItemTextView @JvmOverloads constructor(
 		)
 	}
 
-	private fun getRippleColorFallback(context: Context): ColorStateList {
-		return context.getThemeColorStateList(android.R.attr.colorControlHighlight)
+	private fun getRippleColor(context: Context): ColorStateList {
+		return ContextCompat.getColorStateList(context, R.color.selector_overlay)
 			?: ColorStateList.valueOf(Color.TRANSPARENT)
 	}
-}
+}

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

@@ -0,0 +1,123 @@
+package org.koitharu.kotatsu.base.ui.widgets
+
+import android.content.Context
+import android.graphics.Canvas
+import android.graphics.Outline
+import android.graphics.Paint
+import android.util.AttributeSet
+import android.view.View
+import android.view.ViewOutlineProvider
+import androidx.annotation.ColorInt
+import androidx.annotation.FloatRange
+import androidx.core.graphics.ColorUtils
+import com.google.android.material.R as materialR
+import kotlin.random.Random
+import org.koitharu.kotatsu.parsers.util.replaceWith
+import org.koitharu.kotatsu.utils.ext.getThemeColor
+import org.koitharu.kotatsu.utils.ext.resolveDp
+
+class SegmentedBarView @JvmOverloads constructor(
+	context: Context,
+	attrs: AttributeSet? = null,
+	defStyleAttr: Int = 0,
+) : View(context, attrs, defStyleAttr) {
+
+	private val paint = Paint(Paint.ANTI_ALIAS_FLAG)
+	private val segmentsData = ArrayList<Segment>()
+	private val segmentsSizes = ArrayList<Float>()
+	private val outlineColor = context.getThemeColor(materialR.attr.colorOutline)
+	private var cornerSize = 0f
+
+	var segments: List<Segment>
+		get() = segmentsData
+		set(value) {
+			segmentsData.replaceWith(value)
+			updateSizes()
+			invalidate()
+		}
+
+	init {
+		paint.strokeWidth = context.resources.resolveDp(1f)
+		outlineProvider = OutlineProvider()
+		clipToOutline = true
+
+		if (isInEditMode) {
+			segments = List(Random.nextInt(3, 5)) {
+				Segment(
+					percent = Random.nextFloat(),
+					color = ColorUtils.HSLToColor(floatArrayOf(Random.nextInt(0, 360).toFloat(), 0.5f, 0.5f)),
+				)
+			}
+		}
+	}
+
+	override fun onSizeChanged(w: Int, h: Int, oldw: Int, oldh: Int) {
+		super.onSizeChanged(w, h, oldw, oldh)
+		cornerSize = h / 2f
+		updateSizes()
+	}
+
+	override fun onDraw(canvas: Canvas) {
+		if (segmentsSizes.isEmpty()) {
+			return
+		}
+		val w = width.toFloat()
+		var x = w - segmentsSizes.last()
+		for (i in (0 until segmentsData.size).reversed()) {
+			val segment = segmentsData[i]
+			paint.color = segment.color
+			paint.style = Paint.Style.FILL
+			val segmentWidth = segmentsSizes[i]
+			canvas.drawRoundRect(0f, 0f, x + cornerSize, height.toFloat(), cornerSize, cornerSize, paint)
+			paint.color = outlineColor
+			paint.style = Paint.Style.STROKE
+			canvas.drawRoundRect(0f, 0f, x + cornerSize, height.toFloat(), cornerSize, cornerSize, paint)
+			x -= segmentWidth
+		}
+		paint.color = outlineColor
+		paint.style = Paint.Style.STROKE
+		canvas.drawRoundRect(0f, 0f, w, height.toFloat(), cornerSize, cornerSize, paint)
+	}
+
+	private fun updateSizes() {
+		segmentsSizes.clear()
+		segmentsSizes.ensureCapacity(segmentsData.size + 1)
+		var w = width.toFloat()
+		for (segment in segmentsData) {
+			val segmentWidth = (w * segment.percent).coerceAtLeast(cornerSize)
+			segmentsSizes.add(segmentWidth)
+			w -= segmentWidth
+		}
+		segmentsSizes.add(w)
+	}
+
+	class Segment(
+		@FloatRange(from = 0.0, to = 1.0) val percent: Float,
+		@ColorInt val color: Int,
+	) {
+
+		override fun equals(other: Any?): Boolean {
+			if (this === other) return true
+			if (javaClass != other?.javaClass) return false
+
+			other as Segment
+
+			if (percent != other.percent) return false
+			if (color != other.color) return false
+
+			return true
+		}
+
+		override fun hashCode(): Int {
+			var result = percent.hashCode()
+			result = 31 * result + color
+			return result
+		}
+	}
+
+	private class OutlineProvider : ViewOutlineProvider() {
+		override fun getOutline(view: View, outline: Outline) {
+			outline.setRoundRect(0, 0, view.width, view.height, view.height / 2f)
+		}
+	}
+}

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

@@ -0,0 +1,29 @@
+package org.koitharu.kotatsu.base.ui.widgets
+
+import android.content.Context
+import android.text.Selection
+import android.text.Spannable
+import android.util.AttributeSet
+import android.view.MotionEvent
+import androidx.annotation.AttrRes
+import com.google.android.material.textview.MaterialTextView
+
+class SelectableTextView @JvmOverloads constructor(
+	context: Context,
+	attrs: AttributeSet? = null,
+	@AttrRes defStyleAttr: Int = android.R.attr.textViewStyle,
+) : MaterialTextView(context, attrs, defStyleAttr) {
+
+	override fun dispatchTouchEvent(event: MotionEvent?): Boolean {
+		fixSelectionRange()
+		return super.dispatchTouchEvent(event)
+	}
+
+	// https://stackoverflow.com/questions/22810147/error-when-selecting-text-from-textview-java-lang-indexoutofboundsexception-se
+	private fun fixSelectionRange() {
+		if (selectionStart < 0 || selectionEnd < 0) {
+			val spannableText = text as? Spannable ?: return
+			Selection.setSelection(spannableText, text.length)
+		}
+	}
+}

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

@@ -0,0 +1,142 @@
+package org.koitharu.kotatsu.base.ui.widgets
+
+import android.animation.Animator
+import android.animation.AnimatorListenerAdapter
+import android.animation.TimeInterpolator
+import android.content.Context
+import android.os.Parcel
+import android.os.Parcelable
+import android.util.AttributeSet
+import android.view.ViewPropertyAnimator
+import androidx.annotation.AttrRes
+import androidx.annotation.StyleRes
+import androidx.coordinatorlayout.widget.CoordinatorLayout
+import androidx.customview.view.AbsSavedState
+import androidx.interpolator.view.animation.FastOutLinearInInterpolator
+import androidx.interpolator.view.animation.LinearOutSlowInInterpolator
+import com.google.android.material.R as materialR
+import com.google.android.material.bottomnavigation.BottomNavigationView
+import org.koitharu.kotatsu.utils.ext.applySystemAnimatorScale
+import org.koitharu.kotatsu.utils.ext.measureHeight
+
+private const val STATE_DOWN = 1
+private const val STATE_UP = 2
+
+private const val SLIDE_UP_ANIMATION_DURATION = 225L
+private const val SLIDE_DOWN_ANIMATION_DURATION = 175L
+
+class SlidingBottomNavigationView @JvmOverloads constructor(
+	context: Context,
+	attrs: AttributeSet? = null,
+	@AttrRes defStyleAttr: Int = materialR.attr.bottomNavigationStyle,
+	@StyleRes defStyleRes: Int = materialR.style.Widget_Design_BottomNavigationView,
+) : BottomNavigationView(context, attrs, defStyleAttr, defStyleRes),
+	CoordinatorLayout.AttachedBehavior {
+
+	private var currentAnimator: ViewPropertyAnimator? = null
+
+	private var currentState = STATE_UP
+	private var behavior = HideBottomNavigationOnScrollBehavior()
+
+	override fun getBehavior(): CoordinatorLayout.Behavior<*> {
+		return behavior
+	}
+
+	override fun onSaveInstanceState(): Parcelable {
+		val superState = super.onSaveInstanceState()
+		return SavedState(superState, currentState, translationY)
+	}
+
+	override fun onRestoreInstanceState(state: Parcelable?) {
+		if (state is SavedState) {
+			super.onRestoreInstanceState(state.superState)
+			super.setTranslationY(state.translationY)
+			currentState = state.currentState
+		} else {
+			super.onRestoreInstanceState(state)
+		}
+	}
+
+	override fun setTranslationY(translationY: Float) {
+		// Disallow translation change when state down
+		if (currentState != STATE_DOWN) {
+			super.setTranslationY(translationY)
+		}
+	}
+
+	fun show() {
+		currentAnimator?.cancel()
+		clearAnimation()
+
+		currentState = STATE_UP
+		animateTranslation(
+			0F,
+			SLIDE_UP_ANIMATION_DURATION,
+			LinearOutSlowInInterpolator(),
+		)
+	}
+
+	fun hide() {
+		currentAnimator?.cancel()
+		clearAnimation()
+
+		currentState = STATE_DOWN
+		val target = measureHeight()
+		if (target == 0) {
+			return
+		}
+		animateTranslation(
+			target.toFloat(),
+			SLIDE_DOWN_ANIMATION_DURATION,
+			FastOutLinearInInterpolator(),
+		)
+	}
+
+	private fun animateTranslation(targetY: Float, duration: Long, interpolator: TimeInterpolator) {
+		currentAnimator = animate()
+			.translationY(targetY)
+			.setInterpolator(interpolator)
+			.setDuration(duration)
+			.applySystemAnimatorScale(context)
+			.setListener(
+				object : AnimatorListenerAdapter() {
+					override fun onAnimationEnd(animation: Animator) {
+						currentAnimator = null
+						postInvalidate()
+					}
+				},
+			)
+	}
+
+	internal class SavedState : AbsSavedState {
+		var currentState = STATE_UP
+		var translationY = 0F
+
+		constructor(superState: Parcelable, currentState: Int, translationY: Float) : super(superState) {
+			this.currentState = currentState
+			this.translationY = translationY
+		}
+
+		constructor(source: Parcel, loader: ClassLoader?) : super(source, loader) {
+			currentState = source.readInt()
+			translationY = source.readFloat()
+		}
+
+		override fun writeToParcel(out: Parcel, flags: Int) {
+			super.writeToParcel(out, flags)
+			out.writeInt(currentState)
+			out.writeFloat(translationY)
+		}
+
+		companion object {
+
+			@Suppress("unused")
+			@JvmField
+			val CREATOR: Parcelable.Creator<SavedState> = object : Parcelable.Creator<SavedState> {
+				override fun createFromParcel(`in`: Parcel) = SavedState(`in`, SavedState::class.java.classLoader)
+
+				override fun newArray(size: Int): Array<SavedState?> = arrayOfNulls(size)
+			}
+		}
+	}
+}

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

@@ -1,14 +0,0 @@
-package org.koitharu.kotatsu.base.ui.widgets
-
-import android.content.Context
-import android.util.AttributeSet
-import android.widget.FrameLayout
-
-class SquareLayout @JvmOverloads constructor(
-	context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
-) : FrameLayout(context, attrs, defStyleAttr) {
-
-	public override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
-		super.onMeasure(widthMeasureSpec, widthMeasureSpec)
-	}
-}

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

@@ -1,6 +1,5 @@
 package org.koitharu.kotatsu.base.ui.widgets
 
-import android.annotation.SuppressLint
 import android.content.Context
 import android.util.AttributeSet
 import android.view.Gravity
@@ -21,8 +20,7 @@ class WindowInsetHolder @JvmOverloads constructor(
 	private var desiredHeight = 0
 	private var desiredWidth = 0
 
-	@SuppressLint("RtlHardcoded")
-	override fun dispatchApplyWindowInsets(insets: WindowInsets): WindowInsets {
+	override fun onApplyWindowInsets(insets: WindowInsets): WindowInsets {
 		val barsInsets = WindowInsetsCompat.toWindowInsetsCompat(insets, this)
 			.getInsets(WindowInsetsCompat.Type.systemBars())
 		val gravity = getLayoutGravity()
@@ -41,24 +39,26 @@ class WindowInsetHolder @JvmOverloads constructor(
 			desiredHeight = newHeight
 			requestLayout()
 		}
-		return super.dispatchApplyWindowInsets(insets)
+		return super.onApplyWindowInsets(insets)
 	}
 
 	override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
 		val widthMode = MeasureSpec.getMode(widthMeasureSpec)
+		val widthSize = MeasureSpec.getSize(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)
-			},
-		)
+		val heightSize = MeasureSpec.getSize(heightMeasureSpec)
+
+		val width: Int = when (widthMode) {
+			MeasureSpec.EXACTLY -> widthSize
+			MeasureSpec.AT_MOST -> minOf(desiredWidth, widthSize)
+			else -> desiredWidth
+		}
+		val height = when (heightMode) {
+			MeasureSpec.EXACTLY -> heightSize
+			MeasureSpec.AT_MOST -> minOf(desiredHeight, heightSize)
+			else -> desiredHeight
+		}
+		setMeasuredDimension(width, height)
 	}
 
 	private fun getLayoutGravity(): Int {
@@ -69,4 +69,4 @@ class WindowInsetHolder @JvmOverloads constructor(
 			else -> Gravity.NO_GRAVITY
 		}
 	}
-}
+}

app/src/main/java/org/koitharu/kotatsu/bookmarks/data/BookmarkEntity.kt

@@ -0,0 +1,29 @@
+package org.koitharu.kotatsu.bookmarks.data
+
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.ForeignKey
+import org.koitharu.kotatsu.core.db.entity.MangaEntity
+
+@Entity(
+	tableName = "bookmarks",
+	primaryKeys = ["manga_id", "page_id"],
+	foreignKeys = [
+		ForeignKey(
+			entity = MangaEntity::class,
+			parentColumns = ["manga_id"],
+			childColumns = ["manga_id"],
+			onDelete = ForeignKey.CASCADE
+		),
+	]
+)
+data class BookmarkEntity(
+	@ColumnInfo(name = "manga_id", index = true) val mangaId: Long,
+	@ColumnInfo(name = "page_id", index = true) val pageId: Long,
+	@ColumnInfo(name = "chapter_id") val chapterId: Long,
+	@ColumnInfo(name = "page") val page: Int,
+	@ColumnInfo(name = "scroll") val scroll: Int,
+	@ColumnInfo(name = "image") val imageUrl: String,
+	@ColumnInfo(name = "created_at") val createdAt: Long,
+	@ColumnInfo(name = "percent") val percent: Float,
+)

app/src/main/java/org/koitharu/kotatsu/bookmarks/data/BookmarksDao.kt

@@ -0,0 +1,33 @@
+package org.koitharu.kotatsu.bookmarks.data
+
+import androidx.room.*
+import kotlinx.coroutines.flow.Flow
+import org.koitharu.kotatsu.core.db.entity.MangaWithTags
+
+@Dao
+abstract class BookmarksDao {
+
+	@Query("SELECT * FROM bookmarks WHERE manga_id = :mangaId AND page_id = :pageId")
+	abstract suspend fun find(mangaId: Long, pageId: Long): BookmarkEntity?
+
+	@Query("SELECT * FROM bookmarks WHERE manga_id = :mangaId AND chapter_id = :chapterId AND page = :page")
+	abstract fun observe(mangaId: Long, chapterId: Long, page: Int): Flow<BookmarkEntity?>
+
+	@Query("SELECT * FROM bookmarks WHERE manga_id = :mangaId ORDER BY created_at DESC")
+	abstract fun observe(mangaId: Long): Flow<List<BookmarkEntity>>
+
+	@Transaction
+	@Query(
+		"SELECT * FROM manga JOIN bookmarks ON bookmarks.manga_id = manga.manga_id ORDER BY bookmarks.created_at"
+	)
+	abstract fun observe(): Flow<Map<MangaWithTags, List<BookmarkEntity>>>
+
+	@Insert
+	abstract suspend fun insert(entity: BookmarkEntity)
+
+	@Delete
+	abstract suspend fun delete(entity: BookmarkEntity)
+
+	@Query("DELETE FROM bookmarks WHERE manga_id = :mangaId AND page_id = :pageId")
+	abstract suspend fun delete(mangaId: Long, pageId: Long)
+}

app/src/main/java/org/koitharu/kotatsu/bookmarks/data/EntityMapping.kt

@@ -0,0 +1,33 @@
+package org.koitharu.kotatsu.bookmarks.data
+
+import org.koitharu.kotatsu.bookmarks.domain.Bookmark
+import org.koitharu.kotatsu.parsers.model.Manga
+import java.util.*
+
+fun BookmarkEntity.toBookmark(manga: Manga) = Bookmark(
+	manga = manga,
+	pageId = pageId,
+	chapterId = chapterId,
+	page = page,
+	scroll = scroll,
+	imageUrl = imageUrl,
+	createdAt = Date(createdAt),
+	percent = percent,
+)
+
+fun Bookmark.toEntity() = BookmarkEntity(
+	mangaId = manga.id,
+	pageId = pageId,
+	chapterId = chapterId,
+	page = page,
+	scroll = scroll,
+	imageUrl = imageUrl,
+	createdAt = createdAt.time,
+	percent = percent,
+)
+
+fun Collection<BookmarkEntity>.toBookmarks(manga: Manga) = map {
+	it.toBookmark(manga)
+}
+
+fun Collection<Bookmark>.ids() = map { it.pageId }

app/src/main/java/org/koitharu/kotatsu/bookmarks/domain/Bookmark.kt

@@ -0,0 +1,46 @@
+package org.koitharu.kotatsu.bookmarks.domain
+
+import org.koitharu.kotatsu.parsers.model.Manga
+import java.util.*
+
+class Bookmark(
+	val manga: Manga,
+	val pageId: Long,
+	val chapterId: Long,
+	val page: Int,
+	val scroll: Int,
+	val imageUrl: String,
+	val createdAt: Date,
+	val percent: Float,
+) {
+
+	override fun equals(other: Any?): Boolean {
+		if (this === other) return true
+		if (javaClass != other?.javaClass) return false
+
+		other as Bookmark
+
+		if (manga != other.manga) return false
+		if (pageId != other.pageId) return false
+		if (chapterId != other.chapterId) return false
+		if (page != other.page) return false
+		if (scroll != other.scroll) return false
+		if (imageUrl != other.imageUrl) return false
+		if (createdAt != other.createdAt) return false
+		if (percent != other.percent) return false
+
+		return true
+	}
+
+	override fun hashCode(): Int {
+		var result = manga.hashCode()
+		result = 31 * result + pageId.hashCode()
+		result = 31 * result + chapterId.hashCode()
+		result = 31 * result + page
+		result = 31 * result + scroll
+		result = 31 * result + imageUrl.hashCode()
+		result = 31 * result + createdAt.hashCode()
+		result = 31 * result + percent.hashCode()
+		return result
+	}
+}

app/src/main/java/org/koitharu/kotatsu/bookmarks/domain/BookmarksRepository.kt

@@ -0,0 +1,90 @@
+package org.koitharu.kotatsu.bookmarks.domain
+
+import android.database.SQLException
+import androidx.room.withTransaction
+import javax.inject.Inject
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.map
+import org.koitharu.kotatsu.base.domain.ReversibleHandle
+import org.koitharu.kotatsu.bookmarks.data.BookmarkEntity
+import org.koitharu.kotatsu.bookmarks.data.toBookmark
+import org.koitharu.kotatsu.bookmarks.data.toBookmarks
+import org.koitharu.kotatsu.bookmarks.data.toEntity
+import org.koitharu.kotatsu.core.db.MangaDatabase
+import org.koitharu.kotatsu.core.db.entity.toEntities
+import org.koitharu.kotatsu.core.db.entity.toEntity
+import org.koitharu.kotatsu.core.db.entity.toManga
+import org.koitharu.kotatsu.parsers.model.Manga
+import org.koitharu.kotatsu.utils.ext.mapItems
+import org.koitharu.kotatsu.utils.ext.printStackTraceDebug
+
+class BookmarksRepository @Inject constructor(
+	private val db: MangaDatabase,
+) {
+
+	fun observeBookmark(manga: Manga, chapterId: Long, page: Int): Flow<Bookmark?> {
+		return db.bookmarksDao.observe(manga.id, chapterId, page).map { it?.toBookmark(manga) }
+	}
+
+	fun observeBookmarks(manga: Manga): Flow<List<Bookmark>> {
+		return db.bookmarksDao.observe(manga.id).mapItems { it.toBookmark(manga) }
+	}
+
+	fun observeBookmarks(): Flow<Map<Manga, List<Bookmark>>> {
+		return db.bookmarksDao.observe().map { map ->
+			val res = LinkedHashMap<Manga, List<Bookmark>>(map.size)
+			for ((k, v) in map) {
+				val manga = k.toManga()
+				res[manga] = v.toBookmarks(manga)
+			}
+			res
+		}
+	}
+
+	suspend fun addBookmark(bookmark: Bookmark) {
+		db.withTransaction {
+			val tags = bookmark.manga.tags.toEntities()
+			db.tagsDao.upsert(tags)
+			db.mangaDao.upsert(bookmark.manga.toEntity(), tags)
+			db.bookmarksDao.insert(bookmark.toEntity())
+		}
+	}
+
+	suspend fun removeBookmark(mangaId: Long, pageId: Long) {
+		db.bookmarksDao.delete(mangaId, pageId)
+	}
+
+	suspend fun removeBookmarks(ids: Map<Manga, Set<Long>>): ReversibleHandle {
+		val entities = ArrayList<BookmarkEntity>(ids.size)
+		db.withTransaction {
+			val dao = db.bookmarksDao
+			for ((manga, idSet) in ids) {
+				for (pageId in idSet) {
+					val e = dao.find(manga.id, pageId)
+					if (e != null) {
+						entities.add(e)
+					}
+					dao.delete(manga.id, pageId)
+				}
+			}
+		}
+		return BookmarksRestorer(entities)
+	}
+
+	private inner class BookmarksRestorer(
+		private val entities: Collection<BookmarkEntity>,
+	) : ReversibleHandle {
+
+		override suspend fun reverse() {
+			db.withTransaction {
+				for (e in entities) {
+					try {
+						db.bookmarksDao.insert(e)
+					} catch (e: SQLException) {
+						e.printStackTraceDebug()
+					}
+				}
+			}
+		}
+	}
+}