Increment version

.idea/inspectionProfiles/Project_Default.xml

@@ -1,6 +1,7 @@
 <component name="InspectionProjectProfileManager">
   <profile version="1.0">
     <option name="myName" value="Project Default" />
+    <inspection_tool class="BooleanLiteralArgument" enabled="true" level="WEAK WARNING" enabled_by_default="true" />
     <inspection_tool class="TrailingComma" enabled="true" level="INFORMATION" enabled_by_default="true" />
   </profile>
 </component>

.idea/kotlinc.xml

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

.idea/vcs.xml

@@ -1,5 +1,14 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="GitSharedSettings">
+    <option name="FORCE_PUSH_PROHIBITED_PATTERNS">
+      <list>
+        <option value="master" />
+        <option value="devel" />
+        <option value="legacy" />
+      </list>
+    </option>
+  </component>
   <component name="VcsDirectoryMappings">
     <mapping directory="$PROJECT_DIR$" vcs="Git" />
   </component>

README.md

@@ -8,6 +8,8 @@ Kotatsu is a free and open source manga reader for Android.
 
 Latest release: [get here](https://github.com/nv95/Kotatsu/releases/latest)
 
+Legacy build (Android 4.1+): [available here](https://github.com/nv95/Kotatsu/releases/tag/v0.3-legacy)
+
 ### Main Features
 
 * Online manga catalogues
@@ -18,13 +20,17 @@ Latest release: [get here](https://github.com/nv95/Kotatsu/releases/latest)
 * Tablet-optimized modern UI
 * Reading third-party comics from CBZ
 * Standard and Webtoon-optimized reader
-* Checking for new chapters
+* Notifications about new chapters
+
+### Coming Features
+
+* Global search
 
 ### Screenshots
 
-| ![Screenshot_20200226-210337](https://user-images.githubusercontent.com/8948226/75573590-d467f180-5a65-11ea-8338-a34af4679ed6.png) | ![Screenshot_20200226-210310](https://user-images.githubusercontent.com/8948226/75573612-dcc02c80-5a65-11ea-9afb-293dadfb3cfd.png) | ![Screenshot_20200226-210232](https://user-images.githubusercontent.com/8948226/75573621-e0ec4a00-5a65-11ea-92b9-72ab90281a2b.png) |
+| ![Screenshot_20200226-210337](https://user-images.githubusercontent.com/8948226/80315102-3478db00-87fe-11ea-9ce8-4bbd1c254b2b.png) | ![Screenshot_20200226-210310](https://user-images.githubusercontent.com/8948226/80315110-3f337000-87fe-11ea-95df-944c196b6667.png) | ![Screenshot_20200226-210232](https://user-images.githubusercontent.com/8948226/80315121-49ee0500-87fe-11ea-8d9b-537a041bbf2f.png) |
 |---|---|---|
-| ![Screenshot_20200226-210405](https://user-images.githubusercontent.com/8948226/75573629-e34ea400-5a65-11ea-86a1-4496032ac0f0.png)  | ![Screenshot_20200226-210151](https://user-images.githubusercontent.com/8948226/75573632-e5186780-5a65-11ea-81b0-7c296157709c.png) | ![Screenshot_20200226-210223](https://user-images.githubusercontent.com/8948226/75573639-e6e22b00-5a65-11ea-84a6-6257f532fd2c.png) |
+| ![Screenshot_20200226-210405](https://user-images.githubusercontent.com/8948226/80315130-55d9c700-87fe-11ea-8350-2c8452906eb7.png)  | ![Screenshot_20200226-210151](https://user-images.githubusercontent.com/8948226/80315135-612cf280-87fe-11ea-984c-aa18567d5bbc.png) | ![Screenshot_20200226-210223](https://user-images.githubusercontent.com/8948226/80315146-6be78780-87fe-11ea-8439-ca1ca578172b.png) |
 
 ### License
 [![GNU GPLv3 Image](https://www.gnu.org/graphics/gplv3-127x51.png)](http://www.gnu.org/licenses/gpl-3.0.en.html)  

app/build.gradle

@@ -1,7 +1,9 @@
-apply plugin: 'com.android.application'
-apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
-apply plugin: 'kotlin-kapt'
+plugins {
+	id 'com.android.application'
+	id 'kotlin-android'
+	id 'kotlin-android-extensions'
+	id 'kotlin-kapt'
+}
 
 def gitCommits = 'git rev-list --count HEAD'.execute([], rootDir).text.trim().toInteger()
 def gitBranch = 'git branch --show-current'.execute([], rootDir).text.trim()
@@ -15,17 +17,16 @@ android {
 		minSdkVersion 21
 		targetSdkVersion 29
 		versionCode gitCommits
-		versionName '0.3'
+		versionName '0.4'
 
 		buildConfigField 'String', 'GIT_BRANCH', "\"${gitBranch}\""
 
 		kapt {
 			arguments {
-				arg('room.schemaLocation', "$projectDir/schemas".toString())
+				arg 'room.schemaLocation', "$projectDir/schemas".toString()
 			}
 		}
 	}
-	archivesBaseName = "kotatsu_${gitCommits}"
 	compileOptions {
 		sourceCompatibility JavaVersion.VERSION_1_8
 		targetCompatibility JavaVersion.VERSION_1_8
@@ -38,6 +39,7 @@ android {
 			applicationIdSuffix = '.debug'
 		}
 		release {
+			multiDexEnabled false
 			minifyEnabled true
 			shrinkResources true
 			proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
@@ -58,15 +60,17 @@ androidExtensions {
 dependencies {
 	implementation fileTree(dir: 'libs', include: ['*.jar', '*.aar'])
 	implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
-	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.3'
-	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.3'
+	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.6'
+	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.6'
 
 	implementation 'androidx.core:core-ktx:1.3.0-rc01'
-	implementation 'androidx.fragment:fragment-ktx:1.2.4'
-	implementation 'androidx.appcompat:appcompat:1.2.0-beta01'
-	implementation 'androidx.constraintlayout:constraintlayout:2.0.0-beta4'
+	implementation 'androidx.appcompat:appcompat:1.2.0-rc01'
+	implementation 'androidx.activity:activity-ktx:1.2.0-alpha04'
+	implementation 'androidx.fragment:fragment-ktx:1.3.0-alpha04'
+	implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.0-alpha02'
+	implementation 'androidx.constraintlayout:constraintlayout:2.0.0-beta6'
 	implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0-rc01'
-	implementation 'androidx.recyclerview:recyclerview:1.2.0-alpha02'
+	implementation 'androidx.recyclerview:recyclerview:1.2.0-alpha03'
 	implementation 'androidx.viewpager2:viewpager2:1.1.0-alpha01'
 	implementation 'androidx.preference:preference-ktx:1.1.1'
 	implementation 'androidx.work:work-runtime-ktx:2.3.4'
@@ -82,18 +86,18 @@ dependencies {
 	implementation 'com.github.moxy-community:moxy-ktx:2.1.2'
 	kapt 'com.github.moxy-community:moxy-compiler:2.1.2'
 
-	implementation 'com.squareup.okhttp3:okhttp:4.5.0'
-	implementation 'com.squareup.okio:okio:2.5.0'
+	implementation 'com.squareup.okhttp3:okhttp:4.7.2'
+	implementation 'com.squareup.okio:okio:2.6.0'
 	implementation 'org.jsoup:jsoup:1.13.1'
 
 	implementation 'org.koin:koin-android:2.1.5'
-	implementation 'io.coil-kt:coil:0.9.5'
+	implementation 'io.coil-kt:coil:0.11.0'
 	implementation 'com.davemorrissey.labs:subsampling-scale-image-view:3.10.0'
 	implementation 'com.tomclaw.cache:cache:1.0'
 
-	debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.2'
-	debugImplementation 'com.github.ChuckerTeam.Chucker:library:3.1.2'
-	releaseImplementation 'com.github.ChuckerTeam.Chucker:library-no-op:3.1.2'
+	debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.3'
+	debugImplementation 'com.github.ChuckerTeam.Chucker:library:3.2.0'
+	releaseImplementation 'com.github.ChuckerTeam.Chucker:library-no-op:3.2.0'
 
 	testImplementation 'junit:junit:4.13'
 	testImplementation 'org.json:json:20190722'

app/proguard-rules.pro

@@ -9,4 +9,5 @@
 -keep class org.koitharu.kotatsu.core.db.entity.* { *; }
 -keepclassmembers public class * extends org.koitharu.kotatsu.core.parser.MangaRepository {
 	public <init>(...);
-}
+}
+-dontwarn okhttp3.internal.platform.ConscryptPlatform

app/src/main/AndroidManifest.xml

@@ -60,8 +60,15 @@
 			android:windowSoftInputMode="stateAlwaysHidden" />
 		<activity
 			android:name=".ui.main.list.favourites.categories.CategoriesActivity"
-			android:windowSoftInputMode="stateAlwaysHidden"
-			android:label="@string/favourites_categories" />
+			android:label="@string/favourites_categories"
+			android:windowSoftInputMode="stateAlwaysHidden" />
+		<activity
+			android:name=".ui.widget.shelf.ShelfConfigActivity"
+			android:label="@string/manga_shelf">
+			<intent-filter>
+				<action android:name="android.appwidget.action.APPWIDGET_CONFIGURE" />
+			</intent-filter>
+		</activity>
 
 		<service
 			android:name=".ui.download.DownloadService"
@@ -87,21 +94,25 @@
 				android:name="android.support.FILE_PROVIDER_PATHS"
 				android:resource="@xml/filepaths" />
 		</provider>
-		
-		<receiver android:name=".ui.widget.shelf.ShelfWidgetProvider"
+
+		<receiver
+			android:name=".ui.widget.shelf.ShelfWidgetProvider"
 			android:label="@string/manga_shelf">
 			<intent-filter>
 				<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
 			</intent-filter>
-			<meta-data android:name="android.appwidget.provider"
+			<meta-data
+				android:name="android.appwidget.provider"
 				android:resource="@xml/widget_shelf" />
 		</receiver>
-		<receiver android:name=".ui.widget.recent.RecentWidgetProvider"
+		<receiver
+			android:name=".ui.widget.recent.RecentWidgetProvider"
 			android:label="@string/recent_manga">
 			<intent-filter>
 				<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
 			</intent-filter>
-			<meta-data android:name="android.appwidget.provider"
+			<meta-data
+				android:name="android.appwidget.provider"
 				android:resource="@xml/widget_recent" />
 		</receiver>
 

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

@@ -4,7 +4,8 @@ import android.app.Application
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.room.Room
 import coil.Coil
-import coil.ImageLoader
+import coil.ComponentRegistry
+import coil.ImageLoaderBuilder
 import coil.util.CoilUtils
 import com.chuckerteam.chucker.api.ChuckerCollector
 import com.chuckerteam.chucker.api.ChuckerInterceptor
@@ -13,10 +14,12 @@ import org.koin.android.ext.koin.androidContext
 import org.koin.android.ext.koin.androidLogger
 import org.koin.core.context.startKoin
 import org.koin.dsl.module
+import org.koitharu.kotatsu.core.db.DatabasePrePopulateCallback
 import org.koitharu.kotatsu.core.db.MangaDatabase
 import org.koitharu.kotatsu.core.db.migrations.Migration1To2
 import org.koitharu.kotatsu.core.db.migrations.Migration2To3
 import org.koitharu.kotatsu.core.db.migrations.Migration3To4
+import org.koitharu.kotatsu.core.db.migrations.Migration4To5
 import org.koitharu.kotatsu.core.local.CbzFetcher
 import org.koitharu.kotatsu.core.local.PagesCache
 import org.koitharu.kotatsu.core.local.cookies.PersistentCookieJar
@@ -85,16 +88,19 @@ class KotatsuApp : Application() {
 	}
 
 	private fun initCoil() {
-		Coil.setDefaultImageLoader(ImageLoader(applicationContext) {
-			okHttpClient {
-				okHttp()
-					.cache(CoilUtils.createDefaultCache(applicationContext))
-					.build()
-			}
-			componentRegistry {
-				add(CbzFetcher())
-			}
-		})
+		Coil.setImageLoader(
+			ImageLoaderBuilder(applicationContext)
+				.okHttpClient(
+					okHttp()
+						.cache(CoilUtils.createDefaultCache(applicationContext))
+						.build()
+				).componentRegistry(
+					ComponentRegistry.Builder()
+						.add(CbzFetcher())
+						.build()
+				)
+				.build()
+		)
 	}
 
 	private fun initErrorHandler() {
@@ -120,5 +126,6 @@ class KotatsuApp : Application() {
 		applicationContext,
 		MangaDatabase::class.java,
 		"kotatsu-db"
-	).addMigrations(Migration1To2, Migration2To3, Migration3To4)
+	).addMigrations(Migration1To2, Migration2To3, Migration3To4, Migration4To5)
+		.addCallback(DatabasePrePopulateCallback(resources))
 }

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

@@ -0,0 +1,16 @@
+package org.koitharu.kotatsu.core.db
+
+import android.content.res.Resources
+import androidx.room.RoomDatabase
+import androidx.sqlite.db.SupportSQLiteDatabase
+import org.koitharu.kotatsu.R
+
+class DatabasePrePopulateCallback(private val resources: Resources) : RoomDatabase.Callback() {
+
+	override fun onCreate(db: SupportSQLiteDatabase) {
+		db.execSQL(
+			"INSERT INTO favourite_categories (created_at, sort_key, title) VALUES (?,?,?)",
+			arrayOf(System.currentTimeMillis(), 1, resources.getString(R.string.read_later))
+		)
+	}
+}

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

@@ -9,8 +9,8 @@ import org.koitharu.kotatsu.core.db.entity.FavouriteCategoryEntity
 @Dao
 abstract class FavouriteCategoriesDao {
 
-	@Query("SELECT category_id,title,created_at FROM favourite_categories ORDER BY :orderBy")
-	abstract suspend fun findAll(orderBy: String): List<FavouriteCategoryEntity>
+	@Query("SELECT * FROM favourite_categories ORDER BY sort_key")
+	abstract suspend fun findAll(): List<FavouriteCategoryEntity>
 
 	@Insert(onConflict = OnConflictStrategy.ABORT)
 	abstract suspend fun insert(category: FavouriteCategoryEntity): Long
@@ -20,4 +20,14 @@ abstract class FavouriteCategoriesDao {
 
 	@Query("UPDATE favourite_categories SET title = :title WHERE category_id = :id")
 	abstract suspend fun update(id: Long, title: String)
+
+	@Query("UPDATE favourite_categories SET sort_key = :sortKey WHERE category_id = :id")
+	abstract suspend fun update(id: Long, sortKey: Int)
+
+	@Query("SELECT MAX(sort_key) FROM favourite_categories")
+	protected abstract suspend fun getMaxSortKey(): Int?
+
+	suspend fun getNextSortKey(): Int {
+		return (getMaxSortKey() ?: 0) + 1
+	}
 }

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

@@ -9,8 +9,20 @@ import org.koitharu.kotatsu.core.db.entity.MangaEntity
 abstract class FavouritesDao {
 
 	@Transaction
-	@Query("SELECT * FROM favourites GROUP BY manga_id ORDER BY :orderBy LIMIT :limit OFFSET :offset")
-	abstract suspend fun findAll(offset: Int, limit: Int, orderBy: String): List<FavouriteManga>
+	@Query("SELECT * FROM favourites GROUP BY manga_id ORDER BY created_at")
+	abstract suspend fun findAll(): List<FavouriteManga>
+
+	@Transaction
+	@Query("SELECT * FROM favourites GROUP BY manga_id ORDER BY created_at LIMIT :limit OFFSET :offset")
+	abstract suspend fun findAll(offset: Int, limit: Int): List<FavouriteManga>
+
+	@Transaction
+	@Query("SELECT * FROM favourites WHERE category_id = :categoryId GROUP BY manga_id ORDER BY created_at")
+	abstract suspend fun findAll(categoryId: Long): List<FavouriteManga>
+
+	@Transaction
+	@Query("SELECT * FROM favourites WHERE category_id = :categoryId GROUP BY manga_id ORDER BY created_at LIMIT :limit OFFSET :offset")
+	abstract suspend fun findAll(categoryId: Long, offset: Int, limit: Int): List<FavouriteManga>
 
 	@Query("SELECT * FROM manga WHERE manga_id IN (SELECT manga_id FROM favourites)")
 	abstract suspend fun findAllManga(): List<MangaEntity>

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

@@ -8,7 +8,7 @@ import org.koitharu.kotatsu.core.db.entity.*
 	entities = [
 		MangaEntity::class, TagEntity::class, HistoryEntity::class, MangaTagsEntity::class,
 		FavouriteCategoryEntity::class, FavouriteEntity::class, MangaPrefsEntity::class, TrackEntity::class
-	], version = 4
+	], version = 5
 )
 abstract class MangaDatabase : RoomDatabase() {
 

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

@@ -11,12 +11,14 @@ data class FavouriteCategoryEntity(
 	@PrimaryKey(autoGenerate = true)
 	@ColumnInfo(name = "category_id") val categoryId: Int,
 	@ColumnInfo(name = "created_at") val createdAt: Long,
+	@ColumnInfo(name = "sort_key") val sortKey: Int,
 	@ColumnInfo(name = "title") val title: String
 ) {
 
 	fun toFavouriteCategory(id: Long? = null) = FavouriteCategory(
 		id = id ?: categoryId.toLong(),
 		title = title,
+		sortKey = sortKey,
 		createdAt = Date(createdAt)
 	)
 }

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

@@ -32,6 +32,6 @@ data class HistoryEntity(
 		updatedAt = Date(updatedAt),
 		chapterId = chapterId,
 		page = page,
-		scroll = scroll
+		scroll = scroll.toInt()
 	)
 }

app/src/main/java/org/koitharu/kotatsu/core/db/migrations/Migration4To5.kt

@@ -0,0 +1,11 @@
+package org.koitharu.kotatsu.core.db.migrations
+
+import androidx.room.migration.Migration
+import androidx.sqlite.db.SupportSQLiteDatabase
+
+object Migration4To5 : Migration(4, 5) {
+
+	override fun migrate(database: SupportSQLiteDatabase) {
+		database.execSQL("ALTER TABLE favourite_categories ADD COLUMN sort_key INTEGER NOT NULL DEFAULT 0")
+	}
+}

app/src/main/java/org/koitharu/kotatsu/core/exceptions/MangaNotFoundException.kt

@@ -1,5 +1,3 @@
 package org.koitharu.kotatsu.core.exceptions
 
-import java.lang.NullPointerException
-
 class MangaNotFoundException(s: String? = null) : RuntimeException(s)

app/src/main/java/org/koitharu/kotatsu/core/local/cookies/cache/SetCookieCache.kt

@@ -37,7 +37,7 @@ class SetCookieCache : CookieCache {
 
 	override fun iterator(): MutableIterator<Cookie> = SetCookieCacheIterator()
 
-	private inner class SetCookieCacheIterator() : MutableIterator<Cookie> {
+	private inner class SetCookieCacheIterator : MutableIterator<Cookie> {
 
 		private val iterator = cookies.iterator()
 

app/src/main/java/org/koitharu/kotatsu/core/model/FavouriteCategory.kt

@@ -8,5 +8,6 @@ import java.util.*
 data class FavouriteCategory(
 	val id: Long,
 	val title: String,
+	val sortKey: Int,
 	val createdAt: Date
 ) : Parcelable

app/src/main/java/org/koitharu/kotatsu/core/model/MangaHistory.kt

@@ -10,5 +10,5 @@ data class MangaHistory(
 	val updatedAt: Date,
 	val chapterId: Long,
 	val page: Int,
-	val scroll: Float
+	val scroll: Int
 ) : Parcelable

app/src/main/java/org/koitharu/kotatsu/core/model/MangaSource.kt

@@ -20,5 +20,8 @@ enum class MangaSource(
 	MANGACHAN("Манга-тян", "ru", MangaChanRepository::class.java),
 	DESUME("Desu.me", "ru", DesuMeRepository::class.java),
 	HENCHAN("Хентай-тян", "ru", HenChanRepository::class.java),
-	YAOICHAN("Яой-тян", "ru", YaoiChanRepository::class.java)
+	YAOICHAN("Яой-тян", "ru", YaoiChanRepository::class.java),
+	MANGATOWN("MangaTown", "en", MangaTownRepository::class.java),
+	MANGALIB("MangaLib", "ru", MangaLibRepository::class.java)
+	// HENTAILIB("HentaiLib", "ru", HentaiLibRepository::class.java)
 }

app/src/main/java/org/koitharu/kotatsu/core/parser/LocalMangaRepository.kt

@@ -1,5 +1,6 @@
 package org.koitharu.kotatsu.core.parser
 
+import android.annotation.SuppressLint
 import android.content.Context
 import android.net.Uri
 import androidx.core.net.toFile
@@ -14,6 +15,7 @@ import org.koitharu.kotatsu.utils.AlphanumComparator
 import org.koitharu.kotatsu.utils.ext.longHashCode
 import org.koitharu.kotatsu.utils.ext.readText
 import org.koitharu.kotatsu.utils.ext.safe
+import org.koitharu.kotatsu.utils.ext.sub
 import java.io.File
 import java.util.*
 import java.util.zip.ZipEntry
@@ -29,8 +31,8 @@ class LocalMangaRepository : MangaRepository, KoinComponent {
 		sortOrder: SortOrder?,
 		tag: MangaTag?
 	): List<Manga> {
-		val files = context.getExternalFilesDirs("manga")
-			.flatMap { x -> x?.listFiles(CbzFilter())?.toList().orEmpty() }
+		val files = getAvailableStorageDirs(context)
+			.flatMap { x -> x.listFiles(CbzFilter())?.toList().orEmpty() }
 		return files.mapNotNull { x -> safe { getFromFile(x) } }
 	}
 
@@ -40,24 +42,34 @@ class LocalMangaRepository : MangaRepository, KoinComponent {
 
 	@Suppress("BlockingMethodInNonBlockingContext")
 	override suspend fun getPages(chapter: MangaChapter): List<MangaPage> {
-		val file = Uri.parse(chapter.url).toFile()
+		val uri = Uri.parse(chapter.url)
+		val file = uri.toFile()
 		val zip = ZipFile(file)
-		val pattern = zip.getEntry(MangaZip.INDEX_ENTRY)?.let(zip::readText)?.let(::MangaIndex)
-			?.getChapterNamesPattern(chapter)
-		val entries = if (pattern != null) {
-			zip.entries().asSequence()
-				.filter { x -> !x.isDirectory && x.name.substringBefore('.').matches(pattern) }
+		val index = zip.getEntry(MangaZip.INDEX_ENTRY)?.let(zip::readText)?.let(::MangaIndex)
+		var entries = zip.entries().asSequence()
+		entries = if (index != null) {
+			val pattern = index.getChapterNamesPattern(chapter)
+			entries.filter { x -> !x.isDirectory && x.name.substringBefore('.').matches(pattern) }
 		} else {
-			zip.entries().asSequence().filter { x -> !x.isDirectory }
-		}.toList().sortedWith(compareBy(AlphanumComparator()) { x -> x.name })
-		return entries.map { x ->
-			val uri = zipUri(file, x.name)
-			MangaPage(
-				id = uri.longHashCode(),
-				url = uri,
-				source = MangaSource.LOCAL
-			)
+			val parent = uri.fragment.orEmpty()
+			entries.filter { x ->
+				!x.isDirectory && x.name.substringBeforeLast(
+					File.separatorChar,
+					""
+				) == parent
+			}
 		}
+		return entries
+			.toList()
+			.sortedWith(compareBy(AlphanumComparator()) { x -> x.name })
+			.map { x ->
+				val entryUri = zipUri(file, x.name)
+				MangaPage(
+					id = entryUri.longHashCode(),
+					url = entryUri,
+					source = MangaSource.LOCAL
+				)
+			}
 	}
 
 
@@ -66,43 +78,50 @@ class LocalMangaRepository : MangaRepository, KoinComponent {
 		return file.delete()
 	}
 
+	@SuppressLint("DefaultLocale")
 	fun getFromFile(file: File): Manga {
 		val zip = ZipFile(file)
 		val fileUri = file.toUri().toString()
 		val entry = zip.getEntry(MangaZip.INDEX_ENTRY)
 		val index = entry?.let(zip::readText)?.let(::MangaIndex)
-		return index?.let {
-			it.getMangaInfo()?.let { x ->
-				x.copy(
-					source = MangaSource.LOCAL,
-					url = fileUri,
-					coverUrl = zipUri(
-						file,
-						entryName = it.getCoverEntry()
-							?: findFirstEntry(zip.entries())?.name.orEmpty()
-					),
-					chapters = x.chapters?.map { c -> c.copy(url = fileUri) }
-				)
-			}
-		} ?: run {
-			val title = file.nameWithoutExtension.replace("_", " ").capitalize()
-			Manga(
-				id = file.absolutePath.longHashCode(),
-				title = title,
-				url = fileUri,
+		val info = index?.getMangaInfo()
+		if (index != null && info != null) {
+			return info.copy(
 				source = MangaSource.LOCAL,
-				coverUrl = zipUri(file, findFirstEntry(zip.entries())?.name.orEmpty()),
-				chapters = listOf(
-					MangaChapter(
-						id = file.absolutePath.longHashCode(),
-						url = fileUri,
-						number = 1,
-						source = MangaSource.LOCAL,
-						name = title
-					)
-				)
+				url = fileUri,
+				coverUrl = zipUri(
+					file,
+					entryName = index.getCoverEntry()
+						?: findFirstEntry(zip.entries())?.name.orEmpty()
+				),
+				chapters = info.chapters?.map { c -> c.copy(url = fileUri) }
 			)
 		}
+		// fallback
+		val title = file.nameWithoutExtension.replace("_", " ").capitalize()
+		val chapters = HashSet<String>()
+		for (x in zip.entries()) {
+			if (!x.isDirectory) {
+				chapters += x.name.substringBeforeLast(File.separatorChar, "")
+			}
+		}
+		val uriBuilder = file.toUri().buildUpon()
+		return Manga(
+			id = file.absolutePath.longHashCode(),
+			title = title,
+			url = fileUri,
+			source = MangaSource.LOCAL,
+			coverUrl = zipUri(file, findFirstEntry(zip.entries())?.name.orEmpty()),
+			chapters = chapters.sortedWith(AlphanumComparator()).mapIndexed { i, s ->
+				MangaChapter(
+					id = "$i$s".longHashCode(),
+					name = if (s.isEmpty()) title else s,
+					number = i + 1,
+					source = MangaSource.LOCAL,
+					url = uriBuilder.fragment(s).build().toString()
+				)
+			}
+		)
 	}
 
 	fun getRemoteManga(localManga: Manga): Manga? {
@@ -133,9 +152,24 @@ class LocalMangaRepository : MangaRepository, KoinComponent {
 
 	companion object {
 
+		private const val DIR_NAME = "manga"
+
 		fun isFileSupported(name: String): Boolean {
 			val ext = name.substringAfterLast('.').toLowerCase(Locale.ROOT)
 			return ext == "cbz" || ext == "zip"
 		}
+
+		fun getAvailableStorageDirs(context: Context): List<File> {
+			val result = ArrayList<File>(5)
+			result += context.filesDir.sub(DIR_NAME)
+			result += context.getExternalFilesDirs(DIR_NAME)
+			return result.distinctBy { it.canonicalPath }.filter { it.exists() || it.mkdir() }
+		}
+
+		fun getFallbackStorageDir(context: Context): File? {
+			return context.getExternalFilesDir(DIR_NAME) ?: context.filesDir.sub(DIR_NAME).takeIf {
+				(it.exists() || it.mkdir()) && it.canWrite()
+			}
+		}
 	}
 }

app/src/main/java/org/koitharu/kotatsu/core/parser/RemoteMangaRepository.kt

@@ -1,18 +1,15 @@
 package org.koitharu.kotatsu.core.parser
 
-import org.koin.core.KoinComponent
-import org.koin.core.inject
 import org.koitharu.kotatsu.core.model.MangaPage
 import org.koitharu.kotatsu.core.model.MangaSource
 import org.koitharu.kotatsu.core.model.MangaTag
 import org.koitharu.kotatsu.core.model.SortOrder
 import org.koitharu.kotatsu.domain.MangaLoaderContext
 
-abstract class RemoteMangaRepository : MangaRepository, KoinComponent {
+abstract class RemoteMangaRepository(protected val loaderContext: MangaLoaderContext) : MangaRepository {
 
 	protected abstract val source: MangaSource
 
-	protected val loaderContext by inject<MangaLoaderContext>()
 	protected val conf by lazy(LazyThreadSafetyMode.NONE) {
 		loaderContext.getSettings(source)
 	}

app/src/main/java/org/koitharu/kotatsu/core/parser/UserAgentInterceptor.kt

@@ -3,7 +3,6 @@ package org.koitharu.kotatsu.core.parser
 import android.annotation.SuppressLint
 import android.os.Build
 import okhttp3.Interceptor
-import okhttp3.Response
 import org.koitharu.kotatsu.BuildConfig
 import java.util.*
 

app/src/main/java/org/koitharu/kotatsu/core/parser/site/ChanRepository.kt

@@ -4,9 +4,12 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.exceptions.ParseException
 import org.koitharu.kotatsu.core.model.*
 import org.koitharu.kotatsu.core.parser.RemoteMangaRepository
+import org.koitharu.kotatsu.domain.MangaLoaderContext
 import org.koitharu.kotatsu.utils.ext.*
 
-abstract class ChanRepository : RemoteMangaRepository() {
+abstract class ChanRepository(loaderContext: MangaLoaderContext) : RemoteMangaRepository(
+	loaderContext
+) {
 
 	protected abstract val defaultDomain: String
 

app/src/main/java/org/koitharu/kotatsu/core/parser/site/DesuMeRepository.kt

@@ -4,9 +4,13 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.exceptions.ParseException
 import org.koitharu.kotatsu.core.model.*
 import org.koitharu.kotatsu.core.parser.RemoteMangaRepository
-import org.koitharu.kotatsu.utils.ext.*
+import org.koitharu.kotatsu.domain.MangaLoaderContext
+import org.koitharu.kotatsu.utils.ext.map
+import org.koitharu.kotatsu.utils.ext.mapIndexed
+import org.koitharu.kotatsu.utils.ext.parseHtml
+import org.koitharu.kotatsu.utils.ext.parseJson
 
-class DesuMeRepository : RemoteMangaRepository() {
+class DesuMeRepository(loaderContext: MangaLoaderContext) : RemoteMangaRepository(loaderContext) {
 
 	override val source = MangaSource.DESUME
 

app/src/main/java/org/koitharu/kotatsu/core/parser/site/GroupleRepository.kt

@@ -4,9 +4,11 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.exceptions.ParseException
 import org.koitharu.kotatsu.core.model.*
 import org.koitharu.kotatsu.core.parser.RemoteMangaRepository
+import org.koitharu.kotatsu.domain.MangaLoaderContext
 import org.koitharu.kotatsu.utils.ext.*
 
-abstract class GroupleRepository : RemoteMangaRepository() {
+abstract class GroupleRepository(loaderContext: MangaLoaderContext) :
+	RemoteMangaRepository(loaderContext) {
 
 	protected abstract val defaultDomain: String
 
@@ -20,7 +22,7 @@ abstract class GroupleRepository : RemoteMangaRepository() {
 		offset: Int,
 		query: String?,
 		sortOrder: SortOrder?,
-		tag: MangaTag?,
+		tag: MangaTag?
 	): List<Manga> {
 		val domain = conf.getDomain(defaultDomain)
 		val doc = when {
@@ -28,8 +30,11 @@ abstract class GroupleRepository : RemoteMangaRepository() {
 				"https://$domain/search",
 				mapOf("q" to query, "offset" to offset.toString())
 			)
-			tag == null -> loaderContext.httpGet("https://$domain/list?sortType=${getSortKey(
-				sortOrder)}&offset=$offset")
+			tag == null -> loaderContext.httpGet(
+				"https://$domain/list?sortType=${getSortKey(
+					sortOrder
+				)}&offset=$offset"
+			)
 			else -> loaderContext.httpGet(
 				"https://$domain/list/genre/${tag.key}?sortType=${getSortKey(
 					sortOrder

app/src/main/java/org/koitharu/kotatsu/core/parser/site/HenChanRepository.kt

@@ -5,11 +5,12 @@ import org.koitharu.kotatsu.core.model.Manga
 import org.koitharu.kotatsu.core.model.MangaChapter
 import org.koitharu.kotatsu.core.model.MangaSource
 import org.koitharu.kotatsu.core.model.MangaTag
+import org.koitharu.kotatsu.domain.MangaLoaderContext
 import org.koitharu.kotatsu.utils.ext.longHashCode
 import org.koitharu.kotatsu.utils.ext.parseHtml
 import org.koitharu.kotatsu.utils.ext.withDomain
 
-class HenChanRepository : ChanRepository() {
+class HenChanRepository(loaderContext: MangaLoaderContext) : ChanRepository(loaderContext) {
 
 	override val defaultDomain = "h-chan.me"
 	override val source = MangaSource.HENCHAN

app/src/main/java/org/koitharu/kotatsu/core/parser/site/HentaiLibRepository.kt

@@ -0,0 +1,10 @@
+package org.koitharu.kotatsu.core.parser.site
+
+/*
+class HentaiLibRepository(loaderContext: MangaLoaderContext) : MangaLibRepository(loaderContext) {
+
+	protected override val defaultDomain = "hentailib.me"
+
+	override val source = MangaSource.HENTAILIB
+
+}*/

app/src/main/java/org/koitharu/kotatsu/core/parser/site/MangaChanRepository.kt

@@ -1,8 +1,9 @@
 package org.koitharu.kotatsu.core.parser.site
 
 import org.koitharu.kotatsu.core.model.MangaSource
+import org.koitharu.kotatsu.domain.MangaLoaderContext
 
-class MangaChanRepository : ChanRepository() {
+class MangaChanRepository(loaderContext: MangaLoaderContext) : ChanRepository(loaderContext) {
 
 	override val defaultDomain = "manga-chan.me"
 	override val source = MangaSource.MANGACHAN

app/src/main/java/org/koitharu/kotatsu/core/parser/site/MangaLibRepository.kt

@@ -0,0 +1,223 @@
+package org.koitharu.kotatsu.core.parser.site
+
+import org.json.JSONArray
+import org.json.JSONObject
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.exceptions.ParseException
+import org.koitharu.kotatsu.core.model.*
+import org.koitharu.kotatsu.core.parser.RemoteMangaRepository
+import org.koitharu.kotatsu.domain.MangaLoaderContext
+import org.koitharu.kotatsu.utils.ext.*
+
+open class MangaLibRepository(loaderContext: MangaLoaderContext) :
+	RemoteMangaRepository(loaderContext) {
+
+	protected open val defaultDomain = "mangalib.me"
+
+	override val source = MangaSource.MANGALIB
+
+	override val sortOrders = setOf(
+		SortOrder.RATING,
+		SortOrder.ALPHABETICAL,
+		SortOrder.POPULARITY,
+		SortOrder.UPDATED,
+		SortOrder.NEWEST
+	)
+
+	override suspend fun getList(
+		offset: Int,
+		query: String?,
+		sortOrder: SortOrder?,
+		tag: MangaTag?
+	): List<Manga> {
+		if (!query.isNullOrEmpty()) {
+			return search(query)
+		}
+		val domain = conf.getDomain(defaultDomain)
+		val page = (offset / 60f).toIntUp()
+		val url = buildString {
+			append("https://")
+			append(domain)
+			append("/manga-list?dir=")
+			append(getSortKey(sortOrder))
+			append("&page=")
+			append(page)
+			if (tag != null) {
+				append("&includeGenres[]=")
+				append(tag.key)
+			}
+		}
+		val doc = loaderContext.httpGet(url).parseHtml()
+		val root = doc.body().getElementById("manga-list") ?: throw ParseException("Root not found")
+		val items = root.selectFirst("div.media-cards-grid").select("div.media-card-wrap")
+		return items.mapNotNull { card ->
+			val a = card.selectFirst("a.media-card") ?: return@mapNotNull null
+			val href = a.attr("href").withDomain(domain)
+			Manga(
+				id = href.longHashCode(),
+				title = card.selectFirst("h3").text(),
+				coverUrl = a.attr("data-src").withDomain(domain),
+				altTitle = null,
+				author = null,
+				rating = Manga.NO_RATING,
+				url = href,
+				tags = emptySet(),
+				state = null,
+				source = source
+			)
+		}
+	}
+
+	override fun onCreatePreferences() = setOf(R.string.key_parser_domain)
+
+	override suspend fun getDetails(manga: Manga): Manga {
+		val doc = loaderContext.httpGet(manga.url + "?section=info").parseHtml()
+		val root = doc.body().getElementById("main-page") ?: throw ParseException("Root not found")
+		val title = root.selectFirst("div.media-header__wrap")?.children()
+		val info = root.selectFirst("div.media-content")
+		val chaptersDoc = loaderContext.httpGet(manga.url + "?section=chapters").parseHtml()
+		val scripts = chaptersDoc.body().select("script")
+		var chapters: ArrayList<MangaChapter>? = null
+		scripts@ for (script in scripts) {
+			val raw = script.html().lines()
+			for (line in raw) {
+				if (line.startsWith("window.__CHAPTERS_DATA__")) {
+					val json = JSONObject(line.substringAfter('=').substringBeforeLast(';'))
+					val list = json.getJSONArray("list")
+					val total = list.length()
+					chapters = ArrayList(total)
+					for (i in 0 until total) {
+						val item = list.getJSONObject(i)
+						val url = buildString {
+							append(manga.url)
+							append("/v")
+							append(item.getInt("chapter_volume"))
+							append("/c")
+							append(item.getString("chapter_number"))
+							append('/')
+							append(item.getJSONArray("teams").getJSONObject(0).getString("slug"))
+						}
+						var name = item.getString("chapter_name")
+						if (name.isNullOrBlank() || name == "null") {
+							name = "Том " + item.getInt("chapter_volume") +
+									" Глава " + item.getString("chapter_number")
+						}
+						chapters.add(
+							MangaChapter(
+								id = url.longHashCode(),
+								url = url,
+								source = source,
+								number = total - i,
+								name = name
+							)
+						)
+					}
+					chapters.reverse()
+					break@scripts
+				}
+			}
+		}
+		return manga.copy(
+			title = title?.getOrNull(0)?.text()?.takeUnless(String::isBlank) ?: manga.title,
+			altTitle = title?.getOrNull(1)?.text()?.substringBefore('/')?.trim(),
+			rating = root.selectFirst("div.media-stats-item__score")
+				?.selectFirst("span")
+				?.text()?.toFloatOrNull()?.div(5f) ?: manga.rating,
+			author = info.getElementsMatchingOwnText("Автор").firstOrNull()
+				?.nextElementSibling()?.text() ?: manga.author,
+			tags = info.getElementsMatchingOwnText("Жанры")?.firstOrNull()
+				?.nextElementSibling()?.select("a")?.mapNotNull { a ->
+					MangaTag(
+						title = a.text().capitalize(),
+						key = a.attr("href").substringAfterLast('='),
+						source = source
+					)
+				}?.toSet() ?: manga.tags,
+			description = info.getElementsMatchingOwnText("Описание")?.firstOrNull()
+				?.nextElementSibling()?.html(),
+			chapters = chapters
+		)
+	}
+
+	override suspend fun getPages(chapter: MangaChapter): List<MangaPage> {
+		val doc = loaderContext.httpGet(chapter.url).parseHtml()
+		val scripts = doc.head().select("script")
+		val pg = doc.body().getElementById("pg").html().substringAfter('=').substringBeforeLast(';')
+		val pages = JSONArray(pg)
+		for (script in scripts) {
+			val raw = script.html().trim()
+			if (raw.startsWith("window.__info")) {
+				val json = JSONObject(raw.substringAfter('=').substringBeforeLast(';'))
+				val domain = json.getJSONObject("servers").run {
+					getStringOrNull("main") ?: getString(
+						json.getJSONObject("img").getString("server")
+					)
+				}
+				val url = json.getJSONObject("img").getString("url")
+				return pages.map { x ->
+					val pageUrl = "$domain$url${x.getString("u")}"
+					MangaPage(
+						id = pageUrl.longHashCode(),
+						source = source,
+						url = pageUrl
+					)
+				}
+			}
+		}
+		throw ParseException("Script with info not found")
+	}
+
+	override suspend fun getTags(): Set<MangaTag> {
+		val domain = conf.getDomain(defaultDomain)
+		val url = "https://$domain/manga-list"
+		val doc = loaderContext.httpGet(url).parseHtml()
+		val scripts = doc.body().select("script")
+		for (script in scripts) {
+			val raw = script.html().trim()
+			if (raw.startsWith("window.__DATA")) {
+				val json = JSONObject(raw.substringAfter('=').substringBeforeLast(';'))
+				val genres = json.getJSONObject("filters").getJSONArray("genres")
+				val result = HashSet<MangaTag>(genres.length())
+				for (x in genres) {
+					result += MangaTag(
+						source = source,
+						key = x.getInt("id").toString(),
+						title = x.getString("name").capitalize()
+					)
+				}
+				return result
+			}
+		}
+		throw ParseException("Script with genres not found")
+	}
+
+	private fun getSortKey(sortOrder: SortOrder?) = when (sortOrder) {
+		SortOrder.RATING -> "desc&sort=rate"
+		SortOrder.ALPHABETICAL -> "asc&sort=name"
+		SortOrder.POPULARITY -> "desc&sort=views"
+		SortOrder.UPDATED -> "desc&sort=last_chapter_at"
+		SortOrder.NEWEST -> "desc&sort=created_at"
+		else -> "desc&sort=last_chapter_at"
+	}
+
+	private suspend fun search(query: String): List<Manga> {
+		val domain = conf.getDomain(defaultDomain)
+		val json = loaderContext.httpGet("https://$domain/search?query=${query.urlEncoded()}")
+			.parseJsonArray()
+		return json.map { jo ->
+			val url = "https://$domain/${jo.getString("slug")}"
+			Manga(
+				id = url.longHashCode(),
+				url = url,
+				title = jo.getString("rus_name"),
+				altTitle = jo.getString("name"),
+				author = null,
+				tags = emptySet(),
+				rating = Manga.NO_RATING,
+				state = null,
+				source = source,
+				coverUrl = "https://$domain/uploads/cover/${jo.getString("slug")}/${jo.getString("cover")}/cover_thumb.jpg"
+			)
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/core/parser/site/MangaTownRepository.kt

@@ -0,0 +1,173 @@
+package org.koitharu.kotatsu.core.parser.site
+
+import org.intellij.lang.annotations.Language
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.exceptions.ParseException
+import org.koitharu.kotatsu.core.model.*
+import org.koitharu.kotatsu.core.parser.RemoteMangaRepository
+import org.koitharu.kotatsu.domain.MangaLoaderContext
+import org.koitharu.kotatsu.utils.ext.*
+import java.util.*
+
+class MangaTownRepository(loaderContext: MangaLoaderContext) : RemoteMangaRepository(loaderContext) {
+
+	override val source = MangaSource.MANGATOWN
+
+	override val sortOrders = setOf(
+		SortOrder.ALPHABETICAL,
+		SortOrder.RATING,
+		SortOrder.POPULARITY,
+		SortOrder.UPDATED
+	)
+
+	override suspend fun getList(
+		offset: Int,
+		query: String?,
+		sortOrder: SortOrder?,
+		tag: MangaTag?
+	): List<Manga> {
+		val domain = conf.getDomain(DOMAIN)
+		val ssl = conf.isUseSsl(false)
+		val scheme = if (ssl) "https" else "http"
+		val sortKey = when (sortOrder) {
+			SortOrder.ALPHABETICAL -> "?name.az"
+			SortOrder.RATING -> "?rating.za"
+			SortOrder.UPDATED -> "?last_chapter_time.za"
+			else -> ""
+		}
+		val page = (offset / 30) + 1
+		val url = when {
+			!query.isNullOrEmpty() -> "$scheme://$domain/search?name=${query.urlEncoded()}"
+			tag != null -> "$scheme://$domain/directory/${tag.key}/$page.htm$sortKey"
+			else -> "$scheme://$domain/directory/$page.htm$sortKey"
+		}
+		val doc = loaderContext.httpGet(url).parseHtml()
+		val root = doc.body().selectFirst("ul.manga_pic_list")
+			?: throw ParseException("Root not found")
+		return root.select("li").mapNotNull { li ->
+			val a = li.selectFirst("a.manga_cover")
+			val href = a.attr("href").withDomain(domain, ssl)
+			val views = li.select("p.view")
+			val status = views.findOwnText { x -> x.startsWith("Status:") }
+				?.substringAfter(':')?.trim()?.toLowerCase(Locale.ROOT)
+			Manga(
+				id = href.longHashCode(),
+				title = a.attr("title"),
+				coverUrl = a.selectFirst("img").attr("src"),
+				source = MangaSource.MANGATOWN,
+				altTitle = null,
+				rating = li.selectFirst("p.score")?.selectFirst("b")
+					?.ownText()?.toFloatOrNull()?.div(5f) ?: Manga.NO_RATING,
+				largeCoverUrl = null,
+				author = views.findText { x -> x.startsWith("Author:") }?.substringAfter(':')
+					?.trim(),
+				state = when (status) {
+					"ongoing" -> MangaState.ONGOING
+					"completed" -> MangaState.FINISHED
+					else -> null
+				},
+				tags = li.selectFirst("p.keyWord")?.select("a")?.mapNotNull tags@{ x ->
+					MangaTag(
+						title = x.attr("title"),
+						key = x.attr("href").parseTagKey() ?: return@tags null,
+						source = MangaSource.MANGATOWN
+					)
+				}?.toSet().orEmpty(),
+				url = href
+			)
+		}
+	}
+
+	override suspend fun getDetails(manga: Manga): Manga {
+		val domain = conf.getDomain(DOMAIN)
+		val ssl = conf.isUseSsl(false)
+		val doc = loaderContext.httpGet(manga.url).parseHtml()
+		val root = doc.body().selectFirst("section.main")
+			?.selectFirst("div.article_content") ?: throw ParseException("Cannot find root")
+		val info = root.selectFirst("div.detail_info").selectFirst("ul")
+		val chaptersList = root.selectFirst("div.chapter_content")
+			?.selectFirst("ul.chapter_list")?.select("li")?.asReversed()
+		return manga.copy(
+			tags = manga.tags + info.select("li").find { x ->
+				x.selectFirst("b")?.ownText() == "Genre(s):"
+			}?.select("a")?.mapNotNull { a ->
+				MangaTag(
+					title = a.attr("title"),
+					key = a.attr("href").parseTagKey() ?: return@mapNotNull null,
+					source = MangaSource.MANGATOWN
+				)
+			}.orEmpty(),
+			description = info.getElementById("show")?.ownText(),
+			chapters = chaptersList?.mapIndexedNotNull { i, li ->
+					val href = li.selectFirst("a").attr("href").withDomain(domain, ssl)
+				val name = li.select("span").filter { it.className().isEmpty() }.joinToString(" - ") { it.text() }.trim()
+					MangaChapter(
+						id = href.longHashCode(),
+						url = href,
+						source = MangaSource.MANGATOWN,
+						number = i + 1,
+						name = if (name.isEmpty()) "${manga.title} - ${i + 1}" else name
+					)
+				}
+		)
+	}
+
+	override suspend fun getPages(chapter: MangaChapter): List<MangaPage> {
+		val domain = conf.getDomain(DOMAIN)
+		val ssl = conf.isUseSsl(false)
+		val doc = loaderContext.httpGet(chapter.url).parseHtml()
+		val root = doc.body().selectFirst("div.page_select")
+			?: throw ParseException("Cannot find root")
+		return root.selectFirst("select").select("option").mapNotNull {
+			val href = it.attr("value").withDomain(domain, ssl)
+			if (href.endsWith("featured.html")) {
+				return@mapNotNull null
+			}
+			MangaPage(
+				id = href.longHashCode(),
+				url = href,
+				source = MangaSource.MANGATOWN
+			)
+		}
+	}
+
+	override suspend fun getPageFullUrl(page: MangaPage): String {
+		val domain = conf.getDomain(DOMAIN)
+		val ssl = conf.isUseSsl(false)
+		val doc = loaderContext.httpGet(page.url).parseHtml()
+		return doc.getElementById("image").attr("src").withDomain(domain, ssl)
+	}
+
+	override suspend fun getTags(): Set<MangaTag> {
+		val domain = conf.getDomain(DOMAIN)
+		val doc = loaderContext.httpGet("http://$domain/directory/").parseHtml()
+		val root = doc.body().selectFirst("aside.right")
+			.getElementsContainingOwnText("Genres")
+			.first()
+			.nextElementSibling()
+		return root.select("li").mapNotNull { li ->
+			val a = li.selectFirst("a") ?: return@mapNotNull null
+			val key = a.attr("href").parseTagKey()
+			if (key.isNullOrEmpty()) {
+				return@mapNotNull null
+			}
+			MangaTag(
+				source = MangaSource.MANGATOWN,
+				key = key,
+				title = a.text()
+			)
+		}.toSet()
+	}
+
+
+	override fun onCreatePreferences() = setOf(R.string.key_parser_domain, R.string.key_parser_ssl)
+
+	private fun String.parseTagKey() = split('/').findLast { TAG_REGEX matches it }
+
+	private companion object {
+
+		@Language("RegExp")
+		val TAG_REGEX = Regex("[^\\-]+-[^\\-]+-[^\\-]+-[^\\-]+-[^\\-]+-[^\\-]+")
+		const val DOMAIN = "www.mangatown.com"
+	}
+}

app/src/main/java/org/koitharu/kotatsu/core/parser/site/MintMangaRepository.kt

@@ -1,8 +1,9 @@
 package org.koitharu.kotatsu.core.parser.site
 
 import org.koitharu.kotatsu.core.model.MangaSource
+import org.koitharu.kotatsu.domain.MangaLoaderContext
 
-class MintMangaRepository : GroupleRepository() {
+class MintMangaRepository(loaderContext: MangaLoaderContext) : GroupleRepository(loaderContext) {
 
 	override val source = MangaSource.MINTMANGA
 	override val defaultDomain: String = "mintmanga.live"

app/src/main/java/org/koitharu/kotatsu/core/parser/site/ReadmangaRepository.kt

@@ -1,8 +1,9 @@
 package org.koitharu.kotatsu.core.parser.site
 
 import org.koitharu.kotatsu.core.model.MangaSource
+import org.koitharu.kotatsu.domain.MangaLoaderContext
 
-class ReadmangaRepository : GroupleRepository() {
+class ReadmangaRepository(loaderContext: MangaLoaderContext) : GroupleRepository(loaderContext) {
 
 	override val defaultDomain = "readmanga.me"
 	override val source = MangaSource.READMANGA_RU

app/src/main/java/org/koitharu/kotatsu/core/parser/site/SelfMangaRepository.kt

@@ -1,8 +1,9 @@
 package org.koitharu.kotatsu.core.parser.site
 
 import org.koitharu.kotatsu.core.model.MangaSource
+import org.koitharu.kotatsu.domain.MangaLoaderContext
 
-class SelfMangaRepository : GroupleRepository() {
+class SelfMangaRepository(loaderContext: MangaLoaderContext) : GroupleRepository(loaderContext) {
 
 	override val defaultDomain = "selfmanga.ru"
 	override val source = MangaSource.SELFMANGA

app/src/main/java/org/koitharu/kotatsu/core/parser/site/YaoiChanRepository.kt

@@ -4,11 +4,12 @@ import org.koitharu.kotatsu.core.exceptions.ParseException
 import org.koitharu.kotatsu.core.model.Manga
 import org.koitharu.kotatsu.core.model.MangaChapter
 import org.koitharu.kotatsu.core.model.MangaSource
+import org.koitharu.kotatsu.domain.MangaLoaderContext
 import org.koitharu.kotatsu.utils.ext.longHashCode
 import org.koitharu.kotatsu.utils.ext.parseHtml
 import org.koitharu.kotatsu.utils.ext.withDomain
 
-class YaoiChanRepository : ChanRepository() {
+class YaoiChanRepository(loaderContext: MangaLoaderContext) : ChanRepository(loaderContext) {
 
 	override val source = MangaSource.YAOICHAN
 	override val defaultDomain = "yaoi-chan.me"

app/src/main/java/org/koitharu/kotatsu/core/prefs/AppSection.kt

@@ -0,0 +1,6 @@
+package org.koitharu.kotatsu.core.prefs
+
+enum class AppSection {
+
+	LOCAL, FAVOURITES, HISTORY;
+}

app/src/main/java/org/koitharu/kotatsu/core/prefs/AppSettings.kt

@@ -5,9 +5,12 @@ import android.content.SharedPreferences
 import android.content.res.Resources
 import android.provider.Settings
 import androidx.appcompat.app.AppCompatDelegate
+import androidx.core.content.edit
 import androidx.preference.PreferenceManager
 import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.parser.LocalMangaRepository
 import org.koitharu.kotatsu.utils.delegates.prefs.*
+import java.io.File
 
 class AppSettings private constructor(resources: Resources, private val prefs: SharedPreferences) :
 	SharedPreferences by prefs {
@@ -23,6 +26,12 @@ class AppSettings private constructor(resources: Resources, private val prefs: S
 		ListMode.DETAILED_LIST
 	)
 
+	var defaultSection by EnumPreferenceDelegate(
+		AppSection::class.java,
+		resources.getString(R.string.key_app_section),
+		AppSection.HISTORY
+	)
+
 	val theme by StringIntPreferenceDelegate(
 		resources.getString(R.string.key_theme),
 		AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM
@@ -88,6 +97,24 @@ class AppSettings private constructor(resources: Resources, private val prefs: S
 
 	var hiddenSources by StringSetPreferenceDelegate(resources.getString(R.string.key_sources_hidden))
 
+	fun getStorageDir(context: Context): File? {
+		val value = prefs.getString(context.getString(R.string.key_local_storage), null)?.let {
+			File(it)
+		}?.takeIf { it.exists() && it.canWrite() }
+		return value ?: LocalMangaRepository.getFallbackStorageDir(context)
+	}
+
+	fun setStorageDir(context: Context, file: File?) {
+		val key = context.getString(R.string.key_local_storage)
+		prefs.edit {
+			if (file == null) {
+				remove(key)
+			} else {
+				putString(key, file.path)
+			}
+		}
+	}
+
 	fun subscribe(listener: SharedPreferences.OnSharedPreferenceChangeListener) {
 		prefs.registerOnSharedPreferenceChangeListener(listener)
 	}

app/src/main/java/org/koitharu/kotatsu/core/prefs/AppWidgetConfig.kt

@@ -0,0 +1,26 @@
+package org.koitharu.kotatsu.core.prefs
+
+import android.content.Context
+import android.content.SharedPreferences
+import org.koitharu.kotatsu.utils.delegates.prefs.LongPreferenceDelegate
+
+class AppWidgetConfig private constructor(
+	private val prefs: SharedPreferences,
+	val widgetId: Int
+) :	SharedPreferences by prefs {
+
+	var categoryId by LongPreferenceDelegate(CATEGORY_ID, 0L)
+
+	companion object {
+
+		private const val CATEGORY_ID = "cat_id"
+
+		fun getInstance(context: Context, widgetId: Int) = AppWidgetConfig(
+			context.getSharedPreferences(
+				"appwidget_$widgetId",
+				Context.MODE_PRIVATE
+			), widgetId
+		)
+	}
+
+}

app/src/main/java/org/koitharu/kotatsu/core/prefs/ListMode.kt

@@ -1,13 +1,6 @@
 package org.koitharu.kotatsu.core.prefs
 
-enum class ListMode(val id: Int) {
+enum class ListMode {
 
-	LIST(0),
-	DETAILED_LIST(1),
-	GRID(2);
-
-	companion object {
-
-		fun valueOf(id: Int) = values().firstOrNull { it.id == id }
-	}
+	LIST, DETAILED_LIST, GRID;
 }

app/src/main/java/org/koitharu/kotatsu/core/prefs/SourceConfig.kt

@@ -8,16 +8,20 @@ interface SourceConfig {
 
 	fun getDomain(defaultValue: String): String
 
+	fun isUseSsl(defaultValue: Boolean): Boolean
+
 	private class PrefSourceConfig(context: Context, source: MangaSource) : SourceConfig {
 
 		private val prefs = context.getSharedPreferences(source.name, Context.MODE_PRIVATE)
 
 		private val keyDomain = context.getString(R.string.key_parser_domain)
+		private val keySsl = context.getString(R.string.key_parser_ssl)
 
 		override fun getDomain(defaultValue: String) = prefs.getString(keyDomain, defaultValue)
 			?.takeUnless(String::isBlank)
 			?: defaultValue
 
+		override fun isUseSsl(defaultValue: Boolean) = prefs.getBoolean(keySsl, defaultValue)
 	}
 
 	companion object {

app/src/main/java/org/koitharu/kotatsu/domain/MangaProviderFactory.kt

@@ -2,13 +2,19 @@ package org.koitharu.kotatsu.domain
 
 import org.koin.core.KoinComponent
 import org.koin.core.get
+import org.koin.core.inject
 import org.koitharu.kotatsu.core.model.MangaSource
 import org.koitharu.kotatsu.core.parser.LocalMangaRepository
 import org.koitharu.kotatsu.core.parser.MangaRepository
 import org.koitharu.kotatsu.core.prefs.AppSettings
+import java.lang.ref.WeakReference
+import java.util.*
 
 object MangaProviderFactory : KoinComponent {
 
+	private val loaderContext by inject<MangaLoaderContext>()
+	private val cache = EnumMap<MangaSource, WeakReference<MangaRepository>>(MangaSource::class.java)
+
 	fun getSources(includeHidden: Boolean): List<MangaSource> {
 		val settings = get<AppSettings>()
 		val list = MangaSource.values().toList() - MangaSource.LOCAL
@@ -18,7 +24,7 @@ object MangaProviderFactory : KoinComponent {
 			val e = order.indexOf(x.ordinal)
 			if (e == -1) order.size + x.ordinal else e
 		}
-		return if(includeHidden) {
+		return if (includeHidden) {
 			sorted
 		} else {
 			sorted.filterNot { x ->
@@ -27,9 +33,24 @@ object MangaProviderFactory : KoinComponent {
 		}
 	}
 
-	fun createLocal() = LocalMangaRepository()
+	fun createLocal(): LocalMangaRepository =
+		(cache[MangaSource.LOCAL]?.get() as? LocalMangaRepository)
+			?: LocalMangaRepository().also {
+				cache[MangaSource.LOCAL] = WeakReference<MangaRepository>(it)
+			}
 
+	@Throws(Throwable::class)
 	fun create(source: MangaSource): MangaRepository {
-		return source.cls.newInstance()
+		cache[source]?.get()?.let {
+			return it
+		}
+		val instance = try {
+			source.cls.getDeclaredConstructor(MangaLoaderContext::class.java)
+				.newInstance(loaderContext)
+		} catch (e: NoSuchMethodException) {
+			source.cls.newInstance()
+		}
+		cache[source] = WeakReference<MangaRepository>(instance)
+		return instance
 	}
 }

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

@@ -1,6 +1,7 @@
 package org.koitharu.kotatsu.domain
 
 import android.graphics.BitmapFactory
+import android.net.Uri
 import android.util.Size
 import okhttp3.OkHttpClient
 import okhttp3.Request
@@ -12,6 +13,7 @@ import org.koitharu.kotatsu.core.prefs.ReaderMode
 import org.koitharu.kotatsu.utils.ext.await
 import org.koitharu.kotatsu.utils.ext.medianOrNull
 import java.io.InputStream
+import java.util.zip.ZipFile
 
 object MangaUtils : KoinComponent {
 
@@ -23,13 +25,22 @@ object MangaUtils : KoinComponent {
 		try {
 			val page = pages.medianOrNull() ?: return null
 			val url = MangaProviderFactory.create(page.source).getPageFullUrl(page)
-			val client = get<OkHttpClient>()
-			val request = Request.Builder()
-				.url(url)
-				.get()
-				.build()
-			val size = client.newCall(request).await().use {
-				getBitmapSize(it.body?.byteStream())
+			val uri = Uri.parse(url)
+			val size = if (uri.scheme == "cbz") {
+				val zip = ZipFile(uri.schemeSpecificPart)
+				val entry = zip.getEntry(uri.fragment)
+				zip.getInputStream(entry).use {
+					getBitmapSize(it)
+				}
+			} else {
+				val client = get<OkHttpClient>()
+				val request = Request.Builder()
+					.url(url)
+					.get()
+					.build()
+				client.newCall(request).await().use {
+					getBitmapSize(it.body?.byteStream())
+				}
 			}
 			return when {
 				size.width * 2 < size.height -> ReaderMode.WEBTOON

app/src/main/java/org/koitharu/kotatsu/domain/favourites/FavouritesRepository.kt

@@ -18,13 +18,28 @@ class FavouritesRepository : KoinComponent {
 
 	private val db: MangaDatabase by inject()
 
+	suspend fun getAllManga(): List<Manga> {
+		val entities = db.favouritesDao.findAll()
+		return entities.map { it.manga.toManga(it.tags.map(TagEntity::toMangaTag).toSet()) }
+	}
+
 	suspend fun getAllManga(offset: Int): List<Manga> {
-		val entities = db.favouritesDao.findAll(offset, 20, "created_at")
+		val entities = db.favouritesDao.findAll(offset, 20)
+		return entities.map { it.manga.toManga(it.tags.map(TagEntity::toMangaTag).toSet()) }
+	}
+
+	suspend fun getManga(categoryId: Long): List<Manga> {
+		val entities = db.favouritesDao.findAll(categoryId)
+		return entities.map { it.manga.toManga(it.tags.map(TagEntity::toMangaTag).toSet()) }
+	}
+
+	suspend fun getManga(categoryId: Long, offset: Int): List<Manga> {
+		val entities = db.favouritesDao.findAll(categoryId, offset, 20)
 		return entities.map { it.manga.toManga(it.tags.map(TagEntity::toMangaTag).toSet()) }
 	}
 
 	suspend fun getAllCategories(): List<FavouriteCategory> {
-		val entities = db.favouriteCategoriesDao.findAll("created_at")
+		val entities = db.favouriteCategoriesDao.findAll()
 		return entities.map { it.toFavouriteCategory() }
 	}
 
@@ -37,17 +52,32 @@ class FavouritesRepository : KoinComponent {
 		val entity = FavouriteCategoryEntity(
 			title = title,
 			createdAt = System.currentTimeMillis(),
+			sortKey = db.favouriteCategoriesDao.getNextSortKey(),
 			categoryId = 0
 		)
 		val id = db.favouriteCategoriesDao.insert(entity)
+		notifyCategoriesChanged()
 		return entity.toFavouriteCategory(id)
 	}
+
 	suspend fun renameCategory(id: Long, title: String) {
 		db.favouriteCategoriesDao.update(id, title)
+		notifyCategoriesChanged()
 	}
 
 	suspend fun removeCategory(id: Long) {
 		db.favouriteCategoriesDao.delete(id)
+		notifyCategoriesChanged()
+	}
+
+	suspend fun reorderCategories(orderedIds: List<Long>) {
+		val dao = db.favouriteCategoriesDao
+		db.withTransaction {
+			for ((i, id) in orderedIds.withIndex()) {
+				dao.update(id, i)
+			}
+		}
+		notifyCategoriesChanged()
 	}
 
 	suspend fun addToCategory(manga: Manga, categoryId: Long) {
@@ -75,7 +105,7 @@ class FavouritesRepository : KoinComponent {
 		}
 
 		fun unsubscribe(listener: OnFavouritesChangeListener) {
-			listeners += listener
+			listeners -= listener
 		}
 
 		private suspend fun notifyFavouritesChanged(mangaId: Long) {
@@ -83,5 +113,11 @@ class FavouritesRepository : KoinComponent {
 				listeners.forEach { x -> x.onFavouritesChanged(mangaId) }
 			}
 		}
+
+		private suspend fun notifyCategoriesChanged() {
+			withContext(Dispatchers.Main) {
+				listeners.forEach { x -> x.onCategoriesChanged() }
+			}
+		}
 	}
 }

app/src/main/java/org/koitharu/kotatsu/domain/favourites/OnFavouritesChangeListener.kt

@@ -3,4 +3,6 @@ package org.koitharu.kotatsu.domain.favourites
 interface OnFavouritesChangeListener {
 
 	fun onFavouritesChanged(mangaId: Long)
+
+	fun onCategoriesChanged()
 }

app/src/main/java/org/koitharu/kotatsu/domain/history/ChapterExtra.kt

@@ -2,5 +2,5 @@ package org.koitharu.kotatsu.domain.history
 
 enum class ChapterExtra {
 
-	READ, CURRENT, UNREAD, NEW
+	READ, CURRENT, UNREAD, NEW, CHECKED
 }

app/src/main/java/org/koitharu/kotatsu/domain/history/HistoryRepository.kt

@@ -17,44 +17,35 @@ import java.util.*
 class HistoryRepository : KoinComponent {
 
 	private val db: MangaDatabase by inject()
+	private val trackingRepository by lazy(::TrackingRepository)
 
 	suspend fun getList(offset: Int, limit: Int = 20): List<Manga> {
 		val entities = db.historyDao.findAll(offset, limit)
 		return entities.map { it.manga.toManga(it.tags.map(TagEntity::toMangaTag).toSet()) }
 	}
 
-	suspend fun addOrUpdate(manga: Manga, chapterId: Long, page: Int, scroll: Float) {
+	suspend fun addOrUpdate(manga: Manga, chapterId: Long, page: Int, scroll: Int) {
 		val tags = manga.tags.map(TagEntity.Companion::fromMangaTag)
 		db.withTransaction {
 			db.tagsDao.upsert(tags)
 			db.mangaDao.upsert(MangaEntity.from(manga), tags)
-			if (db.historyDao.upsert(
-					HistoryEntity(
-						mangaId = manga.id,
-						createdAt = System.currentTimeMillis(),
-						updatedAt = System.currentTimeMillis(),
-						chapterId = chapterId,
-						page = page,
-						scroll = scroll
-					)
+			db.historyDao.upsert(
+				HistoryEntity(
+					mangaId = manga.id,
+					createdAt = System.currentTimeMillis(),
+					updatedAt = System.currentTimeMillis(),
+					chapterId = chapterId,
+					page = page,
+					scroll = scroll.toFloat() // we migrate to int, but decide to not update database
 				)
-			) {
-				TrackingRepository().insertOrNothing(manga)
-			}
+			)
+			trackingRepository.upsert(manga)
 		}
 		notifyHistoryChanged()
 	}
 
 	suspend fun getOne(manga: Manga): MangaHistory? {
-		return db.historyDao.find(manga.id)?.let {
-			MangaHistory(
-				createdAt = Date(it.createdAt),
-				updatedAt = Date(it.updatedAt),
-				chapterId = it.chapterId,
-				page = it.page,
-				scroll = it.scroll
-			)
-		}
+		return db.historyDao.find(manga.id)?.toMangaHistory()
 	}
 
 	suspend fun clear() {
@@ -87,7 +78,7 @@ class HistoryRepository : KoinComponent {
 		}
 
 		fun unsubscribe(listener: OnHistoryChangeListener) {
-			listeners += listener
+			listeners -= listener
 		}
 
 		private suspend fun notifyHistoryChanged() {

app/src/main/java/org/koitharu/kotatsu/domain/local/MangaIndex.kt

@@ -7,6 +7,7 @@ import org.koitharu.kotatsu.core.model.Manga
 import org.koitharu.kotatsu.core.model.MangaChapter
 import org.koitharu.kotatsu.core.model.MangaSource
 import org.koitharu.kotatsu.core.model.MangaTag
+import org.koitharu.kotatsu.utils.ext.getStringOrNull
 import org.koitharu.kotatsu.utils.ext.map
 import org.koitharu.kotatsu.utils.ext.safe
 
@@ -44,12 +45,12 @@ class MangaIndex(source: String?) {
 		Manga(
 			id = json.getLong("id"),
 			title = json.getString("title"),
-			altTitle = json.getString("title_alt"),
+			altTitle = json.getStringOrNull("title_alt"),
 			url = json.getString("url"),
 			source = source,
 			rating = json.getDouble("rating").toFloat(),
 			coverUrl = json.getString("cover"),
-			description = json.getString("description"),
+			description = json.getStringOrNull("description"),
 			tags = json.getJSONArray("tags").map { x ->
 				MangaTag(
 					title = x.getString("title"),

app/src/main/java/org/koitharu/kotatsu/domain/tracking/TrackingRepository.kt

@@ -52,7 +52,7 @@ class TrackingRepository : KoinComponent {
 		db.tracksDao.upsert(entity)
 	}
 
-	suspend fun insertOrNothing(manga: Manga) {
+	suspend fun upsert(manga: Manga) {
 		val chapters = manga.chapters ?: return
 		val entity = TrackEntity(
 			mangaId = manga.id,
@@ -62,6 +62,6 @@ class TrackingRepository : KoinComponent {
 			lastCheck = System.currentTimeMillis(),
 			lastNotifiedChapterId = 0L
 		)
-		db.tracksDao.insert(entity)
+		db.tracksDao.upsert(entity)
 	}
 }

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

@@ -5,7 +5,6 @@ import android.os.Bundle
 import android.view.View
 import androidx.annotation.LayoutRes
 import androidx.appcompat.app.AlertDialog
-import androidx.fragment.app.DialogFragment
 import moxy.MvpAppCompatDialogFragment
 
 abstract class AlertDialogFragment(@LayoutRes private val layoutResId: Int) : MvpAppCompatDialogFragment() {

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

@@ -1,12 +1,9 @@
 package org.koitharu.kotatsu.ui.common
 
-import android.content.pm.PackageManager
 import android.view.KeyEvent
 import android.view.MenuItem
 import android.view.View
 import androidx.appcompat.widget.Toolbar
-import androidx.core.app.ActivityCompat
-import androidx.core.content.ContextCompat
 import moxy.MvpAppCompatActivity
 import org.koin.core.KoinComponent
 import org.koitharu.kotatsu.BuildConfig
@@ -14,8 +11,6 @@ import org.koitharu.kotatsu.R
 
 abstract class BaseActivity : MvpAppCompatActivity(), KoinComponent {
 
-	private var permissionCallback: ((Boolean) -> Unit)? = null
-
 	override fun setContentView(layoutResID: Int) {
 		super.setContentView(layoutResID)
 		setupToolbar()
@@ -35,48 +30,12 @@ abstract class BaseActivity : MvpAppCompatActivity(), KoinComponent {
 		true
 	} else super.onOptionsItemSelected(item)
 
-	fun requestPermission(permission: String, callback: (Boolean) -> Unit) {
-		if (ContextCompat.checkSelfPermission(
-				this,
-				permission
-			) == PackageManager.PERMISSION_GRANTED
-		) {
-			callback(true)
-		} else {
-			permissionCallback = callback
-			ActivityCompat.requestPermissions(this, arrayOf(permission), REQUEST_PERMISSION)
-		}
-	}
-
-	override fun onRequestPermissionsResult(
-		requestCode: Int,
-		permissions: Array<out String>,
-		grantResults: IntArray
-	) {
-		super.onRequestPermissionsResult(requestCode, permissions, grantResults)
-		if (requestCode == REQUEST_PERMISSION) {
-			grantResults.singleOrNull()?.let {
-				permissionCallback?.invoke(it == PackageManager.PERMISSION_GRANTED)
-			}
-			permissionCallback = null
-		}
-	}
-
 	override fun onKeyDown(keyCode: Int, event: KeyEvent?): Boolean {
 		//TODO remove. Just for testing
 		if (BuildConfig.DEBUG && keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
 			recreate()
 			return true
 		}
-		if (BuildConfig.DEBUG && keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
-			throw StackOverflowError("test")
-			return true
-		}
 		return super.onKeyDown(keyCode, event)
 	}
-
-	private companion object {
-
-		const val REQUEST_PERMISSION = 30
-	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/common/ChipsFactory.kt

@@ -6,7 +6,7 @@ import androidx.annotation.DrawableRes
 import com.google.android.material.chip.Chip
 import org.koitharu.kotatsu.utils.ext.getThemeColor
 
-class ChipsFactory(private val context: Context) {
+class ChipsFactory(val context: Context) {
 
 	fun create(convertView: Chip? = null, text: CharSequence, @DrawableRes iconRes: Int = 0,
 			   tag: Any? = null, onClickListener: View.OnClickListener? = null): Chip {

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

@@ -2,7 +2,6 @@ package org.koitharu.kotatsu.ui.common.dialog
 
 import android.content.Context
 import android.content.DialogInterface
-import android.os.Environment
 import android.view.View
 import android.view.ViewGroup
 import android.widget.BaseAdapter
@@ -10,7 +9,8 @@ import androidx.annotation.StringRes
 import androidx.appcompat.app.AlertDialog
 import kotlinx.android.synthetic.main.item_storage.view.*
 import org.koitharu.kotatsu.R
-import org.koitharu.kotatsu.utils.ext.findParent
+import org.koitharu.kotatsu.core.parser.LocalMangaRepository
+import org.koitharu.kotatsu.utils.ext.getStorageName
 import org.koitharu.kotatsu.utils.ext.inflate
 import org.koitharu.kotatsu.utils.ext.longHashCode
 import java.io.File
@@ -20,12 +20,24 @@ class StorageSelectDialog private constructor(private val delegate: AlertDialog)
 
 	fun show() = delegate.show()
 
-	class Builder(context: Context) {
+	class Builder(context: Context, defaultValue: File?, listener: OnStorageSelectListener) {
 
+		private val adapter = VolumesAdapter(context)
 		private val delegate = AlertDialog.Builder(context)
-			.setAdapter(VolumesAdapter(context)) { _, _ ->
 
+		init {
+			if (adapter.isEmpty) {
+				delegate.setMessage(R.string.cannot_find_available_storage)
+			} else {
+				val checked = adapter.volumes.indexOfFirst {
+					it.first.canonicalPath == defaultValue?.canonicalPath
+				}
+				delegate.setSingleChoiceItems(adapter, checked) { d, i ->
+					listener.onStorageSelected(adapter.getItem(i).first)
+					d.dismiss()
+				}
 			}
+		}
 
 		fun setTitle(@StringRes titleResId: Int): Builder {
 			delegate.setTitle(titleResId)
@@ -37,12 +49,17 @@ class StorageSelectDialog private constructor(private val delegate: AlertDialog)
 			return this
 		}
 
+		fun setNegativeButton(@StringRes textId: Int): Builder {
+			delegate.setNegativeButton(textId, null)
+			return this
+		}
+
 		fun create() = StorageSelectDialog(delegate.create())
 	}
 
-	private class VolumesAdapter(context: Context): BaseAdapter() {
+	private class VolumesAdapter(context: Context) : BaseAdapter() {
 
-		private val volumes = getAvailableVolumes(context)
+		val volumes = getAvailableVolumes(context)
 
 		override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
 			val view = convertView ?: parent.inflate(R.layout.item_storage)
@@ -52,7 +69,7 @@ class StorageSelectDialog private constructor(private val delegate: AlertDialog)
 			return view
 		}
 
-		override fun getItem(position: Int): Any = volumes[position]
+		override fun getItem(position: Int): Pair<File, String> = volumes[position]
 
 		override fun getItemId(position: Int) = volumes[position].first.absolutePath.longHashCode()
 
@@ -60,15 +77,17 @@ class StorageSelectDialog private constructor(private val delegate: AlertDialog)
 
 	}
 
+	interface OnStorageSelectListener {
+
+		fun onStorageSelected(file: File)
+	}
+
 	private companion object {
 
 		@JvmStatic
-		fun getAvailableVolumes(context: Context): List<Pair<File,String>> = context.getExternalFilesDirs(null).mapNotNull {
-			val root = it.findParent { x -> x.name == "Android" }?.parentFile ?: return@mapNotNull null
-			root to when {
-				Environment.isExternalStorageEmulated(root) -> context.getString(R.string.internal_storage)
-				Environment.isExternalStorageRemovable(root) -> context.getString(R.string.external_storage)
-				else -> root.name
+		fun getAvailableVolumes(context: Context): List<Pair<File, String>> {
+			return LocalMangaRepository.getAvailableStorageDirs(context).map {
+				it to it.getStorageName(context)
 			}
 		}
 	}

app/src/main/java/org/koitharu/kotatsu/ui/details/ChapterHolder.kt

@@ -1,6 +1,8 @@
 package org.koitharu.kotatsu.ui.details
 
+import android.graphics.Color
 import android.view.ViewGroup
+import androidx.core.view.isVisible
 import kotlinx.android.synthetic.main.item_chapter.*
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.model.MangaChapter
@@ -14,6 +16,7 @@ class ChapterHolder(parent: ViewGroup) :
 	override fun onBind(data: MangaChapter, extra: ChapterExtra) {
 		textView_title.text = data.name
 		textView_number.text = data.number.toString()
+		imageView_check.isVisible = extra == ChapterExtra.CHECKED
 		when (extra) {
 			ChapterExtra.UNREAD -> {
 				textView_number.setBackgroundResource(R.drawable.bg_badge_default)
@@ -31,6 +34,10 @@ class ChapterHolder(parent: ViewGroup) :
 				textView_number.setBackgroundResource(R.drawable.bg_badge_accent)
 				textView_number.setTextColor(context.getThemeColor(android.R.attr.textColorPrimaryInverse))
 			}
+			ChapterExtra.CHECKED -> {
+				textView_number.setBackgroundResource(R.drawable.bg_badge_accent)
+				textView_number.setTextColor(Color.TRANSPARENT)
+			}
 		}
 	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/details/ChaptersAdapter.kt

@@ -10,6 +10,14 @@ import org.koitharu.kotatsu.ui.common.list.OnRecyclerItemClickListener
 class ChaptersAdapter(onItemClickListener: OnRecyclerItemClickListener<MangaChapter>) :
 	BaseRecyclerAdapter<MangaChapter, ChapterExtra>(onItemClickListener) {
 
+	private val checkedIds = HashSet<Long>()
+
+	val checkedItemsCount: Int
+		get() = checkedIds.size
+
+	val checkedItemsIds: Set<Long>
+		get() = checkedIds
+
 	var currentChapterId: Long? = null
 		set(value) {
 			field = value
@@ -26,11 +34,37 @@ class ChaptersAdapter(onItemClickListener: OnRecyclerItemClickListener<MangaChap
 	var currentChapterPosition = RecyclerView.NO_POSITION
 		private set
 
+	fun clearChecked() {
+		checkedIds.clear()
+		notifyDataSetChanged()
+	}
+
+	fun checkAll() {
+		for (item in dataSet) {
+			checkedIds.add(item.id)
+		}
+		notifyDataSetChanged()
+	}
+
+	fun setItemIsChecked(itemId: Long, isChecked: Boolean) {
+		if ((isChecked && checkedIds.add(itemId)) || (!isChecked && checkedIds.remove(itemId))) {
+			val pos = findItemPositionById(itemId)
+			if (pos != RecyclerView.NO_POSITION) {
+				notifyItemChanged(pos)
+			}
+		}
+	}
+
+	fun toggleItemChecked(itemId: Long) {
+		setItemIsChecked(itemId, itemId !in checkedIds)
+	}
+
 	override fun onCreateViewHolder(parent: ViewGroup) = ChapterHolder(parent)
 
 	override fun onGetItemId(item: MangaChapter) = item.id
 
 	override fun getExtra(item: MangaChapter, position: Int): ChapterExtra = when {
+		item.id in checkedIds -> ChapterExtra.CHECKED
 		currentChapterPosition == RecyclerView.NO_POSITION
 				|| currentChapterPosition < position -> if (position >= itemCount - newChaptersCount) {
 			ChapterExtra.NEW

app/src/main/java/org/koitharu/kotatsu/ui/details/ChaptersFragment.kt

@@ -2,7 +2,11 @@ package org.koitharu.kotatsu.ui.details
 
 import android.app.ActivityOptions
 import android.os.Bundle
+import android.view.Menu
+import android.view.MenuItem
 import android.view.View
+import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.view.ActionMode
 import androidx.core.view.isVisible
 import androidx.recyclerview.widget.DividerItemDecoration
 import androidx.recyclerview.widget.LinearLayoutManager
@@ -10,18 +14,15 @@ import androidx.recyclerview.widget.RecyclerView
 import kotlinx.android.synthetic.main.fragment_chapters.*
 import moxy.ktx.moxyPresenter
 import org.koitharu.kotatsu.R
-import org.koitharu.kotatsu.core.model.FavouriteCategory
-import org.koitharu.kotatsu.core.model.Manga
-import org.koitharu.kotatsu.core.model.MangaChapter
-import org.koitharu.kotatsu.core.model.MangaHistory
+import org.koitharu.kotatsu.core.model.*
 import org.koitharu.kotatsu.ui.common.BaseFragment
 import org.koitharu.kotatsu.ui.common.list.OnRecyclerItemClickListener
 import org.koitharu.kotatsu.ui.download.DownloadService
 import org.koitharu.kotatsu.ui.reader.ReaderActivity
-import org.koitharu.kotatsu.utils.ext.showPopupMenu
+import org.koitharu.kotatsu.utils.ext.resolveDp
 
 class ChaptersFragment : BaseFragment(R.layout.fragment_chapters), MangaDetailsView,
-	OnRecyclerItemClickListener<MangaChapter> {
+	OnRecyclerItemClickListener<MangaChapter>, ActionMode.Callback {
 
 	@Suppress("unused")
 	private val presenter by moxyPresenter(factory = MangaDetailsPresenter.Companion::getInstance)
@@ -29,6 +30,7 @@ class ChaptersFragment : BaseFragment(R.layout.fragment_chapters), MangaDetailsV
 	private var manga: Manga? = null
 
 	private lateinit var adapter: ChaptersAdapter
+	private var actionMode: ActionMode? = null
 
 	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
 		super.onViewCreated(view, savedInstanceState)
@@ -69,6 +71,15 @@ class ChaptersFragment : BaseFragment(R.layout.fragment_chapters), MangaDetailsV
 	override fun onFavouriteChanged(categories: List<FavouriteCategory>) = Unit
 
 	override fun onItemClick(item: MangaChapter, position: Int, view: View) {
+		if (adapter.checkedItemsCount != 0) {
+			adapter.toggleItemChecked(item.id)
+			if (adapter.checkedItemsCount == 0) {
+				actionMode?.finish()
+			} else {
+				actionMode?.invalidate()
+			}
+			return
+		}
 		val options = ActivityOptions.makeScaleUpAnimation(
 			view,
 			0,
@@ -86,20 +97,13 @@ class ChaptersFragment : BaseFragment(R.layout.fragment_chapters), MangaDetailsV
 	}
 
 	override fun onItemLongClick(item: MangaChapter, position: Int, view: View): Boolean {
-		view.showPopupMenu(R.menu.popup_chapter) {
-			val ctx = context ?: return@showPopupMenu false
-			val m = manga ?: return@showPopupMenu false
-			when (it.itemId) {
-				R.id.action_save_this -> DownloadService.start(ctx, m, setOf(item.id))
-				R.id.action_save_this_next -> DownloadService.start(ctx, m, m.chapters.orEmpty()
-					.filter { x -> x.number >= item.number }.map { x -> x.id })
-				R.id.action_save_this_prev -> DownloadService.start(ctx, m, m.chapters.orEmpty()
-					.filter { x -> x.number <= item.number }.map { x -> x.id })
-				else -> return@showPopupMenu false
-			}
-			true
+		if (actionMode == null) {
+			actionMode = (activity as? AppCompatActivity)?.startSupportActionMode(this)
 		}
-		return true
+		return actionMode?.also {
+			adapter.setItemIsChecked(item.id, true)
+			it.invalidate()
+		} != null
 	}
 
 	private fun scrollToCurrent() {
@@ -107,7 +111,50 @@ class ChaptersFragment : BaseFragment(R.layout.fragment_chapters), MangaDetailsV
 			?: RecyclerView.NO_POSITION
 		if (pos != RecyclerView.NO_POSITION) {
 			(recyclerView_chapters.layoutManager as? LinearLayoutManager)
-				?.scrollToPositionWithOffset(pos, 100)
+				?.scrollToPositionWithOffset(pos, resources.resolveDp(40))
 		}
 	}
+
+	override fun onActionItemClicked(mode: ActionMode, item: MenuItem): Boolean {
+		return when (item.itemId) {
+			R.id.action_save -> {
+				DownloadService.start(
+					context ?: return false,
+					manga ?: return false,
+					adapter.checkedItemsIds
+				)
+				mode.finish()
+				true
+			}
+			R.id.action_select_all -> {
+				adapter.checkAll()
+				mode.invalidate()
+				true
+			}
+			else -> false
+		}
+	}
+
+	override fun onCreateActionMode(mode: ActionMode, menu: Menu): Boolean {
+		mode.menuInflater.inflate(R.menu.mode_chapters, menu)
+		menu.findItem(R.id.action_save).isVisible = manga?.source != MangaSource.LOCAL
+		mode.title = manga?.title
+		return true
+	}
+
+	override fun onPrepareActionMode(mode: ActionMode, menu: Menu): Boolean {
+		val count = adapter.checkedItemsCount
+		mode.subtitle = resources.getQuantityString(
+			R.plurals.chapters_from_x,
+			count,
+			count,
+			adapter.itemCount
+		)
+		return true
+	}
+
+	override fun onDestroyActionMode(mode: ActionMode?) {
+		adapter.clearChecked()
+		actionMode = null
+	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/details/MangaDetailsActivity.kt

@@ -8,10 +8,13 @@ import android.view.Menu
 import android.view.MenuItem
 import android.widget.Toast
 import androidx.appcompat.app.AlertDialog
+import androidx.appcompat.view.ActionMode
 import androidx.core.content.pm.ShortcutManagerCompat
 import androidx.core.net.toFile
 import androidx.lifecycle.lifecycleScope
 import com.google.android.material.snackbar.Snackbar
+import com.google.android.material.tabs.TabLayout
+import com.google.android.material.tabs.TabLayoutMediator
 import kotlinx.android.synthetic.main.activity_details.*
 import kotlinx.coroutines.launch
 import moxy.MvpDelegate
@@ -29,7 +32,8 @@ import org.koitharu.kotatsu.utils.MangaShortcut
 import org.koitharu.kotatsu.utils.ShareHelper
 import org.koitharu.kotatsu.utils.ext.getDisplayMessage
 
-class MangaDetailsActivity : BaseActivity(), MangaDetailsView {
+class MangaDetailsActivity : BaseActivity(), MangaDetailsView,
+	TabLayoutMediator.TabConfigurationStrategy {
 
 	private val presenter by moxyPresenter(factory = MangaDetailsPresenter.Companion::getInstance)
 
@@ -39,8 +43,8 @@ class MangaDetailsActivity : BaseActivity(), MangaDetailsView {
 		super.onCreate(savedInstanceState)
 		setContentView(R.layout.activity_details)
 		supportActionBar?.setDisplayHomeAsUpEnabled(true)
-		pager.adapter = MangaDetailsAdapter(resources, supportFragmentManager)
-		tabs.setupWithViewPager(pager)
+		pager.adapter = MangaDetailsAdapter(this)
+		TabLayoutMediator(tabs, pager, this).attach()
 		if (savedInstanceState?.containsKey(MvpDelegate.MOXY_DELEGATE_TAGS_KEY) != true) {
 			intent?.getParcelableExtra<Manga>(EXTRA_MANGA)?.let {
 				presenter.loadDetails(it, true)
@@ -100,6 +104,8 @@ class MangaDetailsActivity : BaseActivity(), MangaDetailsView {
 			manga?.source != null && manga?.source != MangaSource.LOCAL
 		menu.findItem(R.id.action_delete).isVisible =
 			manga?.source == MangaSource.LOCAL
+		menu.findItem(R.id.action_browser).isVisible =
+			manga?.source != MangaSource.LOCAL
 		menu.findItem(R.id.action_shortcut).isVisible =
 			ShortcutManagerCompat.isRequestPinShortcutSupported(this)
 		return super.onPrepareOptionsMenu(menu)
@@ -135,7 +141,16 @@ class MangaDetailsActivity : BaseActivity(), MangaDetailsView {
 				if (chaptersCount > 5) {
 					AlertDialog.Builder(this)
 						.setTitle(R.string.save_manga)
-						.setMessage(getString(R.string.large_manga_save_confirm, chaptersCount))
+						.setMessage(
+							getString(
+								R.string.large_manga_save_confirm,
+								resources.getQuantityString(
+									R.plurals.chapters,
+									chaptersCount,
+									chaptersCount
+								)
+							)
+						)
 						.setNegativeButton(android.R.string.cancel, null)
 						.setPositiveButton(R.string.save) { _, _ ->
 							DownloadService.start(this, it)
@@ -169,6 +184,24 @@ class MangaDetailsActivity : BaseActivity(), MangaDetailsView {
 		else -> super.onOptionsItemSelected(item)
 	}
 
+	override fun onConfigureTab(tab: TabLayout.Tab, position: Int) {
+		tab.text = when (position) {
+			0 -> getString(R.string.details)
+			1 -> getString(R.string.chapters)
+			else -> null
+		}
+	}
+
+	override fun onSupportActionModeStarted(mode: ActionMode) {
+		super.onSupportActionModeStarted(mode)
+		pager.isUserInputEnabled = false
+	}
+
+	override fun onSupportActionModeFinished(mode: ActionMode) {
+		super.onSupportActionModeFinished(mode)
+		pager.isUserInputEnabled = true
+	}
+
 	companion object {
 
 		private const val EXTRA_MANGA = "manga"

app/src/main/java/org/koitharu/kotatsu/ui/details/MangaDetailsAdapter.kt

@@ -1,24 +1,16 @@
 package org.koitharu.kotatsu.ui.details
 
-import android.content.res.Resources
 import androidx.fragment.app.Fragment
-import androidx.fragment.app.FragmentManager
-import androidx.fragment.app.FragmentPagerAdapter
-import org.koitharu.kotatsu.R
+import androidx.fragment.app.FragmentActivity
+import androidx.viewpager2.adapter.FragmentStateAdapter
 
-class MangaDetailsAdapter(private val resources: Resources, fm: FragmentManager) : FragmentPagerAdapter(fm, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT) {
+class MangaDetailsAdapter(activity: FragmentActivity) : FragmentStateAdapter(activity) {
 
-	override fun getCount() = 2
+	override fun getItemCount() = 2
 
-	override fun getItem(position: Int): Fragment = when(position) {
+	override fun createFragment(position: Int): Fragment = when(position) {
 		0 -> MangaDetailsFragment()
 		1 -> ChaptersFragment()
 		else -> throw IndexOutOfBoundsException("No fragment for position $position")
 	}
-
-	override fun getPageTitle(position: Int): CharSequence? = when(position) {
-		0 -> resources.getString(R.string.details)
-		1 -> resources.getString(R.string.chapters)
-		else -> null
-	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/details/MangaDetailsFragment.kt

@@ -2,6 +2,7 @@ package org.koitharu.kotatsu.ui.details
 
 import android.text.Spanned
 import android.view.View
+import androidx.core.net.toUri
 import androidx.core.text.parseAsHtml
 import androidx.core.view.isVisible
 import coil.api.load
@@ -16,9 +17,11 @@ import org.koitharu.kotatsu.ui.common.BaseFragment
 import org.koitharu.kotatsu.ui.main.list.favourites.categories.select.FavouriteCategoriesDialog
 import org.koitharu.kotatsu.ui.reader.ReaderActivity
 import org.koitharu.kotatsu.ui.search.MangaSearchSheet
+import org.koitharu.kotatsu.utils.FileSizeUtils
 import org.koitharu.kotatsu.utils.ext.addChips
 import org.koitharu.kotatsu.utils.ext.showPopupMenu
 import org.koitharu.kotatsu.utils.ext.textAndVisible
+import org.koitharu.kotatsu.utils.ext.toFileOrNull
 import kotlin.math.roundToInt
 
 class MangaDetailsFragment : BaseFragment(R.layout.fragment_details), MangaDetailsView,
@@ -67,6 +70,16 @@ class MangaDetailsFragment : BaseFragment(R.layout.fragment_details), MangaDetai
 				onClickListener = this@MangaDetailsFragment
 			)
 		}
+		manga.url.toUri().toFileOrNull()?.let { f ->
+			chips_tags.addChips(listOf(f)) {
+				create(
+					text = FileSizeUtils.formatBytes(context, it.length()),
+					iconRes = R.drawable.ic_chip_storage,
+					tag = it,
+					onClickListener = this@MangaDetailsFragment
+				)
+			}
+		}
 		imageView_favourite.setOnClickListener(this)
 		button_read.setOnClickListener(this)
 		button_read.setOnLongClickListener(this)
@@ -123,8 +136,8 @@ class MangaDetailsFragment : BaseFragment(R.layout.fragment_details), MangaDetai
 	}
 
 	override fun onLongClick(v: View): Boolean {
-		when {
-			v.id == R.id.button_read -> {
+		when (v.id) {
+			R.id.button_read -> {
 				if (history == null) {
 					return false
 				}

app/src/main/java/org/koitharu/kotatsu/ui/details/MangaDetailsPresenter.kt

@@ -157,6 +157,8 @@ class MangaDetailsPresenter private constructor() : BasePresenter<MangaDetailsVi
 		}
 	}
 
+	override fun onCategoriesChanged() = Unit
+
 	override fun onDestroy() {
 		HistoryRepository.unsubscribe(this)
 		FavouritesRepository.unsubscribe(this)

app/src/main/java/org/koitharu/kotatsu/ui/download/DownloadService.kt

@@ -8,7 +8,7 @@ import android.webkit.MimeTypeMap
 import android.widget.Toast
 import androidx.core.content.ContextCompat
 import coil.Coil
-import coil.api.get
+import coil.request.GetRequestBuilder
 import kotlinx.coroutines.*
 import kotlinx.coroutines.sync.Mutex
 import okhttp3.OkHttpClient
@@ -30,6 +30,7 @@ import org.koitharu.kotatsu.utils.ext.safe
 import org.koitharu.kotatsu.utils.ext.sub
 import java.io.File
 import java.util.concurrent.TimeUnit
+import kotlin.collections.set
 import kotlin.math.absoluteValue
 
 class DownloadService : BaseService() {
@@ -39,6 +40,7 @@ class DownloadService : BaseService() {
 
 	private val okHttp by inject<OkHttpClient>()
 	private val cache by inject<PagesCache>()
+	private val settings by inject<AppSettings>()
 	private val jobs = HashMap<Int, Job>()
 	private val mutex = Mutex()
 
@@ -74,18 +76,21 @@ class DownloadService : BaseService() {
 	private fun downloadManga(manga: Manga, chaptersIds: Set<Long>?, startId: Int): Job {
 		return launch(Dispatchers.IO) {
 			mutex.lock()
-			wakeLock.acquire(TimeUnit.MINUTES.toMillis(20))
+			wakeLock.acquire(TimeUnit.HOURS.toMillis(1))
 			withContext(Dispatchers.Main) {
 				notification.fillFrom(manga)
 				notification.setCancelId(startId)
 				startForeground(DownloadNotification.NOTIFICATION_ID, notification())
 			}
-			val destination = getExternalFilesDir("manga")!!
+			val destination = settings.getStorageDir(this@DownloadService)
+			checkNotNull(destination) { getString(R.string.cannot_find_available_storage) }
 			var output: MangaZip? = null
 			try {
 				val repo = MangaProviderFactory.create(manga.source)
 				val cover = safe {
-					Coil.loader().get(manga.coverUrl)
+					Coil.execute(GetRequestBuilder(this@DownloadService)
+						.data(manga.coverUrl)
+						.build()).drawable
 				}
 				withContext(Dispatchers.Main) {
 					notification.setLargeIcon(cover)
@@ -162,7 +167,9 @@ class DownloadService : BaseService() {
 						notification.dismiss()
 						stopSelf(startId)
 					}
-					wakeLock.release()
+					if (wakeLock.isHeld) {
+						wakeLock.release()
+					}
 					mutex.unlock()
 				}
 			}

app/src/main/java/org/koitharu/kotatsu/ui/main/MainActivity.kt

@@ -21,10 +21,11 @@ import moxy.ktx.moxyPresenter
 import org.koin.core.inject
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.model.MangaSource
+import org.koitharu.kotatsu.core.prefs.AppSection
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.domain.MangaProviderFactory
 import org.koitharu.kotatsu.ui.common.BaseActivity
-import org.koitharu.kotatsu.ui.main.list.favourites.FavouritesListFragment
+import org.koitharu.kotatsu.ui.main.list.favourites.FavouritesContainerFragment
 import org.koitharu.kotatsu.ui.main.list.history.HistoryListFragment
 import org.koitharu.kotatsu.ui.main.list.local.LocalListFragment
 import org.koitharu.kotatsu.ui.main.list.remote.RemoteListFragment
@@ -65,8 +66,7 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
 		supportFragmentManager.findFragmentById(R.id.container)?.let {
 			fab.isVisible = it is HistoryListFragment
 		} ?: run {
-			navigationView.setCheckedItem(R.id.nav_history)
-			setPrimaryFragment(HistoryListFragment.newInstance())
+			openDefaultSection()
 		}
 		drawer.postDelayed(2000) {
 			AppUpdateService.startIfRequired(applicationContext)
@@ -106,9 +106,18 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
 			val source = MangaSource.values().getOrNull(item.itemId) ?: return false
 			setPrimaryFragment(RemoteListFragment.newInstance(source))
 		} else when (item.itemId) {
-			R.id.nav_history -> setPrimaryFragment(HistoryListFragment.newInstance())
-			R.id.nav_favourites -> setPrimaryFragment(FavouritesListFragment.newInstance())
-			R.id.nav_local_storage -> setPrimaryFragment(LocalListFragment.newInstance())
+			R.id.nav_history -> {
+				settings.defaultSection = AppSection.HISTORY
+				setPrimaryFragment(HistoryListFragment.newInstance())
+			}
+			R.id.nav_favourites -> {
+				settings.defaultSection = AppSection.FAVOURITES
+				setPrimaryFragment(FavouritesContainerFragment.newInstance())
+			}
+			R.id.nav_local_storage -> {
+				settings.defaultSection = AppSection.LOCAL
+				setPrimaryFragment(LocalListFragment.newInstance())
+			}
 			R.id.nav_action_settings -> {
 				startActivity(SettingsActivity.newIntent(this))
 				return true
@@ -167,6 +176,23 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
 		}
 	}
 
+	private fun openDefaultSection() {
+		when(settings.defaultSection) {
+			AppSection.LOCAL -> {
+				navigationView.setCheckedItem(R.id.nav_local_storage)
+				setPrimaryFragment(LocalListFragment.newInstance())
+			}
+			AppSection.FAVOURITES -> {
+				navigationView.setCheckedItem(R.id.nav_favourites)
+				setPrimaryFragment(FavouritesContainerFragment.newInstance())
+			}
+			AppSection.HISTORY -> {
+				navigationView.setCheckedItem(R.id.nav_history)
+				setPrimaryFragment(HistoryListFragment.newInstance())
+			}
+		}
+	}
+
 	private fun setPrimaryFragment(fragment: Fragment) {
 		supportFragmentManager.beginTransaction()
 			.replace(R.id.container, fragment)

app/src/main/java/org/koitharu/kotatsu/ui/main/MainView.kt

@@ -1,7 +1,6 @@
 package org.koitharu.kotatsu.ui.main
 
 import moxy.viewstate.strategy.alias.OneExecution
-import org.koitharu.kotatsu.core.model.MangaState
 import org.koitharu.kotatsu.ui.common.BaseMvpView
 import org.koitharu.kotatsu.ui.reader.ReaderState
 

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

@@ -64,6 +64,9 @@ abstract class MangaListFragment<E> : BaseFragment(R.layout.fragment_list), Mang
 		recyclerView_filter.addItemDecoration(ItemTypeDividerDecoration(view.context))
 		recyclerView_filter.addItemDecoration(SectionItemDecoration(false, this))
 		settings.subscribe(this)
+		if (savedInstanceState?.containsKey(MvpDelegate.MOXY_DELEGATE_TAGS_KEY) != true) {
+			onRequestMoreItems(0)
+		}
 	}
 
 	override fun onDestroyView() {
@@ -72,13 +75,6 @@ abstract class MangaListFragment<E> : BaseFragment(R.layout.fragment_list), Mang
 		super.onDestroyView()
 	}
 
-	override fun onActivityCreated(savedInstanceState: Bundle?) {
-		super.onActivityCreated(savedInstanceState)
-		if (savedInstanceState?.containsKey(MvpDelegate.MOXY_DELEGATE_TAGS_KEY) != true) {
-			onRequestMoreItems(0)
-		}
-	}
-
 	override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
 		inflater.inflate(R.menu.opt_list, menu)
 		super.onCreateOptionsMenu(menu, inflater)

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

@@ -57,6 +57,9 @@ abstract class MangaListSheet<E> : BaseBottomSheet(R.layout.sheet_list), MangaLi
 			textView_title.isVisible = false
 			appbar.elevation = resources.getDimension(R.dimen.elevation_large)
 		}
+		if (savedInstanceState?.containsKey(MvpDelegate.MOXY_DELEGATE_TAGS_KEY) != true) {
+			onRequestMoreItems(0)
+		}
 	}
 
 	override fun onDestroyView() {
@@ -65,13 +68,6 @@ abstract class MangaListSheet<E> : BaseBottomSheet(R.layout.sheet_list), MangaLi
 		super.onDestroyView()
 	}
 
-	override fun onActivityCreated(savedInstanceState: Bundle?) {
-		super.onActivityCreated(savedInstanceState)
-		if (savedInstanceState?.containsKey(MvpDelegate.MOXY_DELEGATE_TAGS_KEY) != true) {
-			onRequestMoreItems(0)
-		}
-	}
-
 	protected fun setTitle(title: CharSequence) {
 		toolbar.title = title
 		textView_title.text = title

app/src/main/java/org/koitharu/kotatsu/ui/main/list/favourites/FavouritesContainerFragment.kt

@@ -0,0 +1,88 @@
+package org.koitharu.kotatsu.ui.main.list.favourites
+
+import android.os.Bundle
+import android.view.Menu
+import android.view.MenuInflater
+import android.view.MenuItem
+import android.view.View
+import com.google.android.material.snackbar.Snackbar
+import com.google.android.material.tabs.TabLayoutMediator
+import kotlinx.android.synthetic.main.fragment_favourites.*
+import moxy.ktx.moxyPresenter
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.model.FavouriteCategory
+import org.koitharu.kotatsu.domain.favourites.FavouritesRepository
+import org.koitharu.kotatsu.domain.favourites.OnFavouritesChangeListener
+import org.koitharu.kotatsu.ui.common.BaseFragment
+import org.koitharu.kotatsu.ui.main.list.favourites.categories.CategoriesActivity
+import org.koitharu.kotatsu.ui.main.list.favourites.categories.FavouriteCategoriesPresenter
+import org.koitharu.kotatsu.ui.main.list.favourites.categories.FavouriteCategoriesView
+import java.util.*
+import kotlin.collections.ArrayList
+
+class FavouritesContainerFragment : BaseFragment(R.layout.fragment_favourites), FavouriteCategoriesView,
+	OnFavouritesChangeListener {
+
+	private val presenter by moxyPresenter(factory = ::FavouriteCategoriesPresenter)
+
+	override fun onCreate(savedInstanceState: Bundle?) {
+		super.onCreate(savedInstanceState)
+		setHasOptionsMenu(true)
+	}
+
+	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+		super.onViewCreated(view, savedInstanceState)
+		val adapter = FavouritesPagerAdapter(this)
+		pager.adapter = adapter
+		TabLayoutMediator(tabs, pager, adapter).attach()
+		FavouritesRepository.subscribe(this)
+	}
+
+	override fun onDestroyView() {
+		FavouritesRepository.unsubscribe(this)
+		super.onDestroyView()
+	}
+
+	override fun onCategoriesChanged(categories: List<FavouriteCategory>) {
+		val data = ArrayList<FavouriteCategory>(categories.size + 1)
+		data += FavouriteCategory(0L, getString(R.string.all_favourites), -1, Date())
+		data += categories
+		(pager.adapter as? FavouritesPagerAdapter)?.replaceData(data)
+	}
+
+	override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
+		inflater.inflate(R.menu.opt_favourites, menu)
+		super.onCreateOptionsMenu(menu, inflater)
+	}
+
+	override fun onOptionsItemSelected(item: MenuItem) = when (item.itemId) {
+		R.id.action_categories -> {
+			context?.let {
+				startActivity(CategoriesActivity.newIntent(it))
+			}
+			true
+		}
+		else -> super.onOptionsItemSelected(item)
+	}
+
+	override fun getTitle(): CharSequence? {
+		return getString(R.string.favourites)
+	}
+
+	override fun onCheckedCategoriesChanged(checkedIds: Set<Int>) = Unit
+
+	override fun onError(e: Throwable) {
+		Snackbar.make(pager, e.message ?: return, Snackbar.LENGTH_LONG).show()
+	}
+
+	override fun onFavouritesChanged(mangaId: Long) = Unit
+
+	override fun onCategoriesChanged() {
+		presenter.loadAllCategories()
+	}
+
+	companion object {
+
+		fun newInstance() = FavouritesContainerFragment()
+	}
+}

app/src/main/java/org/koitharu/kotatsu/ui/main/list/favourites/FavouritesListFragment.kt

@@ -1,49 +1,38 @@
 package org.koitharu.kotatsu.ui.main.list.favourites
 
-import android.view.Menu
-import android.view.MenuInflater
-import android.view.MenuItem
 import kotlinx.android.synthetic.main.fragment_list.*
 import moxy.ktx.moxyPresenter
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.ui.main.list.MangaListFragment
 import org.koitharu.kotatsu.ui.main.list.MangaListView
-import org.koitharu.kotatsu.ui.main.list.favourites.categories.CategoriesActivity
+import org.koitharu.kotatsu.utils.ext.withArgs
 
 class FavouritesListFragment : MangaListFragment<Unit>(), MangaListView<Unit> {
 
 	private val presenter by moxyPresenter(factory = ::FavouritesListPresenter)
 
+	private val categoryId: Long
+		get() = arguments?.getLong(ARG_CATEGORY_ID) ?: 0L
+
 	override fun onRequestMoreItems(offset: Int) {
-		presenter.loadList(offset)
-	}
-
-	override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
-		inflater.inflate(R.menu.opt_favourites, menu)
-		super.onCreateOptionsMenu(menu, inflater)
-	}
-
-	override fun onOptionsItemSelected(item: MenuItem) = when (item.itemId) {
-		R.id.action_categories -> {
-			context?.let {
-				startActivity(CategoriesActivity.newIntent(it))
-			}
-			true
-		}
-		else -> super.onOptionsItemSelected(item)
-	}
-
-	override fun getTitle(): CharSequence? {
-		return getString(R.string.favourites)
+		presenter.loadList(categoryId, offset)
 	}
 
 	override fun setUpEmptyListHolder() {
-		textView_holder.setText(R.string.you_have_not_favourites_yet)
+		textView_holder.setText(if (categoryId == 0L) {
+			R.string.you_have_not_favourites_yet
+		} else {
+			R.string.favourites_category_empty
+		})
 		textView_holder.setCompoundDrawablesRelativeWithIntrinsicBounds(0, 0, 0, 0)
 	}
 
 	companion object {
 
-		fun newInstance() = FavouritesListFragment()
+		private const val ARG_CATEGORY_ID = "category_id"
+
+		fun newInstance(categoryId: Long) = FavouritesListFragment().withArgs(1) {
+			putLong(ARG_CATEGORY_ID, categoryId)
+		}
 	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/main/list/favourites/FavouritesListPresenter.kt

@@ -21,12 +21,16 @@ class FavouritesListPresenter : BasePresenter<MangaListView<Unit>>() {
 		super.onFirstViewAttach()
 	}
 
-	fun loadList(offset: Int) {
+	fun loadList(categoryId: Long, offset: Int) {
 		presenterScope.launch {
 			viewState.onLoadingStateChanged(true)
 			try {
 				val list = withContext(Dispatchers.IO) {
-					repository.getAllManga(offset = offset)
+					if (categoryId == 0L) {
+						repository.getAllManga(offset = offset)
+					} else {
+						repository.getManga(categoryId = categoryId, offset = offset)
+					}
 				}
 				if (offset == 0) {
 					viewState.onListChanged(list)

app/src/main/java/org/koitharu/kotatsu/ui/main/list/favourites/FavouritesPagerAdapter.kt

@@ -0,0 +1,32 @@
+package org.koitharu.kotatsu.ui.main.list.favourites
+
+import androidx.fragment.app.Fragment
+import androidx.viewpager2.adapter.FragmentStateAdapter
+import com.google.android.material.tabs.TabLayout
+import com.google.android.material.tabs.TabLayoutMediator
+import org.koitharu.kotatsu.core.model.FavouriteCategory
+import org.koitharu.kotatsu.ui.common.list.AdapterUpdater
+import org.koitharu.kotatsu.utils.ext.replaceWith
+
+class FavouritesPagerAdapter(fragment: Fragment) : FragmentStateAdapter(fragment), TabLayoutMediator.TabConfigurationStrategy {
+
+	private val dataSet = ArrayList<FavouriteCategory>()
+
+	override fun getItemCount() = dataSet.size
+
+	override fun createFragment(position: Int): Fragment {
+		val item = dataSet[position]
+		return FavouritesListFragment.newInstance(item.id)
+	}
+
+	override fun onConfigureTab(tab: TabLayout.Tab, position: Int) {
+		val item = dataSet[position]
+		tab.text = item.title
+	}
+
+	fun replaceData(data: List<FavouriteCategory>) {
+		val updater = AdapterUpdater(dataSet, data, FavouriteCategory::id)
+		dataSet.replaceWith(data)
+		updater(this)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/ui/main/list/favourites/categories/CategoriesActivity.kt

@@ -10,6 +10,7 @@ import android.view.View
 import androidx.appcompat.app.AlertDialog
 import androidx.core.view.isVisible
 import androidx.recyclerview.widget.DividerItemDecoration
+import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.RecyclerView
 import com.google.android.material.snackbar.Snackbar
 import kotlinx.android.synthetic.main.activity_categories.*
@@ -28,6 +29,7 @@ class CategoriesActivity : BaseActivity(), OnRecyclerItemClickListener<Favourite
 	private val presenter by moxyPresenter(factory = ::FavouriteCategoriesPresenter)
 
 	private lateinit var adapter: CategoriesAdapter
+	private lateinit var reorderHelper: ItemTouchHelper
 
 	override fun onCreate(savedInstanceState: Bundle?) {
 		super.onCreate(savedInstanceState)
@@ -38,6 +40,8 @@ class CategoriesActivity : BaseActivity(), OnRecyclerItemClickListener<Favourite
 		recyclerView.addItemDecoration(DividerItemDecoration(this, RecyclerView.VERTICAL))
 		recyclerView.adapter = adapter
 		fab_add.setOnClickListener(this)
+		reorderHelper = ItemTouchHelper(ReorderHelperCallback())
+		reorderHelper.attachToRecyclerView(recyclerView)
 	}
 
 	override fun onClick(v: View) {
@@ -56,6 +60,11 @@ class CategoriesActivity : BaseActivity(), OnRecyclerItemClickListener<Favourite
 		}
 	}
 
+	override fun onItemLongClick(item: FavouriteCategory, position: Int, view: View): Boolean {
+		reorderHelper.startDrag(recyclerView.findViewHolderForAdapterPosition(position) ?: return false)
+		return true
+	}
+
 	override fun onCategoriesChanged(categories: List<FavouriteCategory>) {
 		adapter.replaceData(categories)
 		textView_holder.isVisible = categories.isEmpty()
@@ -106,6 +115,25 @@ class CategoriesActivity : BaseActivity(), OnRecyclerItemClickListener<Favourite
 			.show()
 	}
 
+	private inner class ReorderHelperCallback : ItemTouchHelper.SimpleCallback(
+		ItemTouchHelper.DOWN or ItemTouchHelper.UP, 0
+	) {
+
+		override fun onMove(
+			recyclerView: RecyclerView,
+			viewHolder: RecyclerView.ViewHolder,
+			target: RecyclerView.ViewHolder
+		): Boolean {
+			val oldPos = viewHolder.bindingAdapterPosition
+			val newPos = target.bindingAdapterPosition
+			adapter.moveItem(oldPos, newPos)
+			presenter.storeCategoriesOrder(adapter.items.map { it.id })
+			return true
+		}
+
+		override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) = Unit
+	}
+
 	companion object {
 
 		fun newIntent(context: Context) = Intent(context, CategoriesActivity::class.java)

app/src/main/java/org/koitharu/kotatsu/ui/main/list/favourites/categories/CategoriesAdapter.kt

@@ -1,17 +1,40 @@
 package org.koitharu.kotatsu.ui.main.list.favourites.categories
 
+import android.annotation.SuppressLint
+import android.view.MotionEvent
 import android.view.ViewGroup
+import kotlinx.android.synthetic.main.item_category.*
 import org.koitharu.kotatsu.core.model.FavouriteCategory
 import org.koitharu.kotatsu.ui.common.list.BaseRecyclerAdapter
+import org.koitharu.kotatsu.ui.common.list.BaseViewHolder
 import org.koitharu.kotatsu.ui.common.list.OnRecyclerItemClickListener
-import org.koitharu.kotatsu.ui.main.list.favourites.categories.select.CategoryCheckableHolder
 
-class CategoriesAdapter(onItemClickListener: OnRecyclerItemClickListener<FavouriteCategory>? = null) :
-	BaseRecyclerAdapter<FavouriteCategory, Unit>(onItemClickListener) {
+class CategoriesAdapter(private val onItemClickListener: OnRecyclerItemClickListener<FavouriteCategory>) :
+	BaseRecyclerAdapter<FavouriteCategory, Unit>() {
 
 	override fun onCreateViewHolder(parent: ViewGroup) = CategoryHolder(parent)
 
 	override fun onGetItemId(item: FavouriteCategory) = item.id
 
 	override fun getExtra(item: FavouriteCategory, position: Int) = Unit
+
+	@SuppressLint("ClickableViewAccessibility")
+	override fun onViewHolderCreated(holder: BaseViewHolder<FavouriteCategory, Unit>) {
+		holder.imageView_more.setOnClickListener { v ->
+			onItemClickListener.onItemClick(holder.requireData(), holder.bindingAdapterPosition, v)
+		}
+		holder.imageView_handle.setOnTouchListener { v, event ->
+			if (event.actionMasked == MotionEvent.ACTION_DOWN) {
+				onItemClickListener.onItemLongClick(holder.requireData(), holder.bindingAdapterPosition, v)
+			} else {
+				false
+			}
+		}
+	}
+
+	fun moveItem(oldPos: Int, newPos: Int) {
+		val item = dataSet.removeAt(oldPos)
+		dataSet.add(newPos, item)
+		notifyItemMoved(oldPos, newPos)
+	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/main/list/favourites/categories/CategoryHolder.kt

@@ -10,6 +10,6 @@ class CategoryHolder(parent: ViewGroup) :
 	BaseViewHolder<FavouriteCategory, Unit>(parent, R.layout.item_category) {
 
 	override fun onBind(data: FavouriteCategory, extra: Unit) {
-		textView.text = data.title
+		textView_title.text = data.title
 	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/main/list/favourites/categories/FavouriteCategoriesPresenter.kt

@@ -2,6 +2,8 @@ package org.koitharu.kotatsu.ui.main.list.favourites.categories
 
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
 import kotlinx.coroutines.withContext
 import moxy.InjectViewState
 import moxy.presenterScope
@@ -14,6 +16,9 @@ import org.koitharu.kotatsu.ui.common.BasePresenter
 class FavouriteCategoriesPresenter : BasePresenter<FavouriteCategoriesView>() {
 
 	private lateinit var repository: FavouritesRepository
+	private val reorderMutex by lazy {
+		Mutex()
+	}
 
 	override fun onFirstViewAttach() {
 		repository = FavouritesRepository()
@@ -28,7 +33,7 @@ class FavouriteCategoriesPresenter : BasePresenter<FavouriteCategoriesView>() {
 					repository.getAllCategories()
 				}
 				viewState.onCategoriesChanged(categories)
-			} catch (e: Exception) {
+			} catch (e: Throwable) {
 				if (BuildConfig.DEBUG) {
 					e.printStackTrace()
 				}
@@ -44,7 +49,7 @@ class FavouriteCategoriesPresenter : BasePresenter<FavouriteCategoriesView>() {
 					repository.getCategories(manga.id)
 				}
 				viewState.onCheckedCategoriesChanged(categories.map { it.id.toInt() }.toSet())
-			} catch (e: Exception) {
+			} catch (e: Throwable) {
 				if (BuildConfig.DEBUG) {
 					e.printStackTrace()
 				}
@@ -61,7 +66,7 @@ class FavouriteCategoriesPresenter : BasePresenter<FavouriteCategoriesView>() {
 					repository.getAllCategories()
 				}
 				viewState.onCategoriesChanged(categories)
-			} catch (e: Exception) {
+			} catch (e: Throwable) {
 				if (BuildConfig.DEBUG) {
 					e.printStackTrace()
 				}
@@ -78,7 +83,7 @@ class FavouriteCategoriesPresenter : BasePresenter<FavouriteCategoriesView>() {
 					repository.getAllCategories()
 				}
 				viewState.onCategoriesChanged(categories)
-			} catch (e: Exception) {
+			} catch (e: Throwable) {
 				if (BuildConfig.DEBUG) {
 					e.printStackTrace()
 				}
@@ -95,7 +100,22 @@ class FavouriteCategoriesPresenter : BasePresenter<FavouriteCategoriesView>() {
 					repository.getAllCategories()
 				}
 				viewState.onCategoriesChanged(categories)
-			} catch (e: Exception) {
+			} catch (e: Throwable) {
+				if (BuildConfig.DEBUG) {
+					e.printStackTrace()
+				}
+				viewState.onError(e)
+			}
+		}
+	}
+
+	fun storeCategoriesOrder(orderedIds: List<Long>) {
+		presenterScope.launch {
+			try {
+				reorderMutex.withLock {
+					repository.reorderCategories(orderedIds)
+				}
+			} catch (e: Throwable) {
 				if (BuildConfig.DEBUG) {
 					e.printStackTrace()
 				}
@@ -107,10 +127,10 @@ class FavouriteCategoriesPresenter : BasePresenter<FavouriteCategoriesView>() {
 	fun addToCategory(manga: Manga, categoryId: Long) {
 		presenterScope.launch {
 			try {
-				val categories = withContext(Dispatchers.IO) {
+				withContext(Dispatchers.IO) {
 					repository.addToCategory(manga,categoryId)
 				}
-			} catch (e: Exception) {
+			} catch (e: Throwable) {
 				if (BuildConfig.DEBUG) {
 					e.printStackTrace()
 				}
@@ -122,10 +142,10 @@ class FavouriteCategoriesPresenter : BasePresenter<FavouriteCategoriesView>() {
 	fun removeFromCategory(manga: Manga, categoryId: Long) {
 		presenterScope.launch {
 			try {
-				val categories = withContext(Dispatchers.IO) {
+				withContext(Dispatchers.IO) {
 					repository.removeFromCategory(manga, categoryId)
 				}
-			} catch (e: Exception) {
+			} catch (e: Throwable) {
 				if (BuildConfig.DEBUG) {
 					e.printStackTrace()
 				}

app/src/main/java/org/koitharu/kotatsu/ui/main/list/local/LocalListFragment.kt

@@ -1,11 +1,12 @@
 package org.koitharu.kotatsu.ui.main.list.local
 
-import android.app.Activity
 import android.content.ActivityNotFoundException
-import android.content.Intent
+import android.net.Uri
 import android.view.Menu
 import android.view.MenuInflater
 import android.view.MenuItem
+import androidx.activity.result.ActivityResultCallback
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AlertDialog
 import com.google.android.material.snackbar.Snackbar
 import kotlinx.android.synthetic.main.fragment_list.*
@@ -17,7 +18,7 @@ import org.koitharu.kotatsu.ui.main.list.MangaListFragment
 import org.koitharu.kotatsu.utils.ext.ellipsize
 import java.io.File
 
-class LocalListFragment : MangaListFragment<File>() {
+class LocalListFragment : MangaListFragment<File>(), ActivityResultCallback<Uri> {
 
 	private val presenter by moxyPresenter(factory = ::LocalListPresenter)
 
@@ -35,11 +36,9 @@ class LocalListFragment : MangaListFragment<File>() {
 	override fun onOptionsItemSelected(item: MenuItem): Boolean {
 		return when (item.itemId) {
 			R.id.action_import -> {
-				val intent = Intent(Intent.ACTION_OPEN_DOCUMENT)
-				intent.addCategory(Intent.CATEGORY_OPENABLE)
-				intent.type = "*/*"
 				try {
-					startActivityForResult(intent, REQUEST_IMPORT)
+					registerForActivityResult(ActivityResultContracts.OpenDocument(), this)
+						.launch(arrayOf("*/*"))
 				} catch (e: ActivityNotFoundException) {
 					if (BuildConfig.DEBUG) {
 						e.printStackTrace()
@@ -63,13 +62,9 @@ class LocalListFragment : MangaListFragment<File>() {
 		textView_holder.setCompoundDrawablesRelativeWithIntrinsicBounds(0, 0, 0, 0)
 	}
 
-	override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
-		super.onActivityResult(requestCode, resultCode, data)
-		when (requestCode) {
-			REQUEST_IMPORT -> if (resultCode == Activity.RESULT_OK) {
-				val uri = data?.data ?: return
-				presenter.importFile(context?.applicationContext ?: return, uri)
-			}
+	override fun onActivityResult(result: Uri?) {
+		if (result != null) {
+			presenter.importFile(context?.applicationContext ?: return, result)
 		}
 	}
 

app/src/main/java/org/koitharu/kotatsu/ui/main/list/local/LocalListPresenter.kt

@@ -15,6 +15,7 @@ import org.koitharu.kotatsu.core.exceptions.UnsupportedFileException
 import org.koitharu.kotatsu.core.model.Manga
 import org.koitharu.kotatsu.core.model.MangaSource
 import org.koitharu.kotatsu.core.parser.LocalMangaRepository
+import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.domain.MangaProviderFactory
 import org.koitharu.kotatsu.domain.history.HistoryRepository
 import org.koitharu.kotatsu.ui.common.BasePresenter
@@ -64,7 +65,7 @@ class LocalListPresenter : BasePresenter<MangaListView<File>>() {
 				if (!LocalMangaRepository.isFileSupported(name)) {
 					throw UnsupportedFileException("Unsupported file on $uri")
 				}
-				val dest = context.getExternalFilesDir("manga")?.sub(name)
+				val dest = get<AppSettings>().getStorageDir(context)?.sub(name)
 					?: throw IOException("External files dir unavailable")
 				context.contentResolver.openInputStream(uri)?.use { source ->
 					dest.outputStream().use { output ->

app/src/main/java/org/koitharu/kotatsu/ui/reader/PageLoader.kt

@@ -51,13 +51,12 @@ class PageLoader : KoinComponent, CoroutineScope, DisposableHandle {
 				.cacheControl(CacheUtils.CONTROL_DISABLED)
 				.build()
 			okHttp.newCall(request).await().use { response ->
-				val body = response.body!!
-				val type = body.contentType()
-				check(type?.type == "image") {
-					"Unexpected content type ${type?.type}/${type?.subtype}"
+				val body = response.body
+				checkNotNull(body) {
+					"Null response"
 				}
 				cache.put(url) { out ->
-					response.body!!.byteStream().copyTo(out)
+					body.byteStream().copyTo(out)
 				}
 			}
 		}

app/src/main/java/org/koitharu/kotatsu/ui/reader/ReaderActivity.kt

@@ -4,12 +4,16 @@ import android.Manifest
 import android.content.Context
 import android.content.Intent
 import android.content.SharedPreferences
+import android.content.pm.PackageManager
 import android.net.Uri
 import android.os.Build
 import android.os.Bundle
 import android.view.*
 import android.widget.Toast
+import androidx.activity.result.ActivityResultCallback
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AlertDialog
+import androidx.core.content.ContextCompat
 import androidx.core.view.isVisible
 import androidx.core.view.postDelayed
 import androidx.core.view.updatePadding
@@ -42,7 +46,8 @@ import org.koitharu.kotatsu.utils.ext.*
 
 class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnChapterChangeListener,
 	GridTouchHelper.OnGridTouchListener, OnPageSelectListener, ReaderConfigDialog.Callback,
-	ReaderListener, SharedPreferences.OnSharedPreferenceChangeListener {
+	ReaderListener, SharedPreferences.OnSharedPreferenceChangeListener,
+	View.OnApplyWindowInsetsListener, ActivityResultCallback<Boolean> {
 
 	private val presenter by moxyPresenter(factory = ::ReaderPresenter)
 	private val settings by inject<AppSettings>()
@@ -65,7 +70,8 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 		toolbar_bottom.inflateMenu(R.menu.opt_reader_bottom)
 		toolbar_bottom.setOnMenuItemClickListener(::onOptionsItemSelected)
 
-		state = savedInstanceState?.getParcelable(EXTRA_STATE)
+		@Suppress("RemoveExplicitTypeArguments")
+		state = savedInstanceState?.getParcelable<ReaderState>(EXTRA_STATE)
 			?: intent.getParcelableExtra<ReaderState>(EXTRA_STATE)
 					?: let {
 				Toast.makeText(this, R.string.error_occurred, Toast.LENGTH_SHORT).show()
@@ -79,10 +85,7 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 				getString(R.string.chapter_d_of_d, state.chapter?.number ?: 0, size)
 		}
 
-		appbar_bottom.setOnApplyWindowInsetsListener { view, insets ->
-			view.updatePadding(bottom = insets.systemWindowInsetBottom)
-			insets
-		}
+		rootLayout.setOnApplyWindowInsetsListener(this)
 
 		settings.subscribe(this)
 		loadSettings()
@@ -180,13 +183,17 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 		}
 		R.id.action_save_page -> {
 			if (reader?.hasItems == true) {
-				requestPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) {
-					if (it) {
-						presenter.savePage(
-							resolver = contentResolver,
-							page = reader?.currentPage ?: return@requestPermission
-						)
-					}
+				if (ContextCompat.checkSelfPermission(
+						this,
+						Manifest.permission.WRITE_EXTERNAL_STORAGE
+					) == PackageManager.PERMISSION_GRANTED
+				) {
+					onActivityResult(true)
+				} else {
+					registerForActivityResult(
+						ActivityResultContracts.RequestPermission(),
+						this
+					).launch(Manifest.permission.WRITE_EXTERNAL_STORAGE)
 				}
 			} else {
 				showWaitWhileLoading()
@@ -196,7 +203,16 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 		else -> super.onOptionsItemSelected(item)
 	}
 
-	override fun saveState(chapterId: Long, page: Int, scroll: Float) {
+	override fun onActivityResult(result: Boolean) {
+		if (result) {
+			presenter.savePage(
+				resolver = contentResolver,
+				page = reader?.currentPage ?: return
+			)
+		}
+	}
+
+	override fun saveState(chapterId: Long, page: Int, scroll: Int) {
 		state = state.copy(chapterId = chapterId, page = page, scroll = scroll)
 		ReaderPresenter.saveState(state)
 	}
@@ -226,13 +242,11 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 				setUiIsVisible(!appbar_top.isVisible)
 			}
 			GridTouchHelper.AREA_TOP,
-			GridTouchHelper.AREA_LEFT,
-			-> if (isTapSwitchEnabled) {
+			GridTouchHelper.AREA_LEFT -> if (isTapSwitchEnabled) {
 				reader?.switchPageBy(-1)
 			}
 			GridTouchHelper.AREA_BOTTOM,
-			GridTouchHelper.AREA_RIGHT,
-			-> if (isTapSwitchEnabled) {
+			GridTouchHelper.AREA_RIGHT -> if (isTapSwitchEnabled) {
 				reader?.switchPageBy(1)
 			}
 		}
@@ -270,15 +284,13 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 		KeyEvent.KEYCODE_SPACE,
 		KeyEvent.KEYCODE_PAGE_DOWN,
 		KeyEvent.KEYCODE_DPAD_DOWN,
-		KeyEvent.KEYCODE_DPAD_RIGHT,
-		-> {
+		KeyEvent.KEYCODE_DPAD_RIGHT -> {
 			reader?.switchPageBy(1)
 			true
 		}
 		KeyEvent.KEYCODE_PAGE_UP,
 		KeyEvent.KEYCODE_DPAD_UP,
-		KeyEvent.KEYCODE_DPAD_LEFT,
-		-> {
+		KeyEvent.KEYCODE_DPAD_LEFT -> {
 			reader?.switchPageBy(-1)
 			true
 		}
@@ -299,7 +311,7 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 		state = state.copy(
 			chapterId = chapter.id,
 			page = 0,
-			scroll = 0f
+			scroll = 0
 		)
 		reader?.updateState(chapterId = chapter.id)
 	}
@@ -356,6 +368,11 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 		}
 	}
 
+	override fun onApplyWindowInsets(v: View, insets: WindowInsets): WindowInsets {
+		appbar_top.updatePadding(top = insets.systemWindowInsetTop)
+		appbar_bottom.updatePadding(bottom = insets.systemWindowInsetBottom)
+		return insets.consumeSystemWindowInsets()
+	}
 
 	private fun loadSettings() {
 		settings.readerPageSwitch.let {
@@ -378,7 +395,7 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 				chapterId = if (chapterId == -1L) manga.chapters?.firstOrNull()?.id
 					?: -1 else chapterId,
 				page = 0,
-				scroll = 0f
+				scroll = 0
 			)
 		)
 

app/src/main/java/org/koitharu/kotatsu/ui/reader/ReaderListener.kt

@@ -7,5 +7,5 @@ interface ReaderListener : BaseMvpView {
 
 	fun onPageChanged(chapter: MangaChapter, page: Int, total: Int)
 
-	fun saveState(chapterId: Long, page: Int, scroll: Float)
+	fun saveState(chapterId: Long, page: Int, scroll: Int)
 }

app/src/main/java/org/koitharu/kotatsu/ui/reader/ReaderState.kt

@@ -11,7 +11,7 @@ data class ReaderState(
 	val manga: Manga,
 	val chapterId: Long,
 	val page: Int,
-	val scroll: Float
+	val scroll: Int
 ) : Parcelable {
 
 	@IgnoredOnParcel

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

@@ -46,10 +46,6 @@ abstract class AbstractReader(contentLayoutId: Int) : BaseFragment(contentLayout
 	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
 		super.onViewCreated(view, savedInstanceState)
 		adapter = onCreateAdapter(pages)
-	}
-
-	override fun onActivityCreated(savedInstanceState: Bundle?) {
-		super.onActivityCreated(savedInstanceState)
 		@Suppress("RemoveExplicitTypeArguments")
 		val state = savedInstanceState?.getParcelable<ReaderState>(ARG_STATE)
 			?: requireArguments().getParcelable<ReaderState>(ARG_STATE)!!
@@ -58,7 +54,7 @@ abstract class AbstractReader(contentLayoutId: Int) : BaseFragment(contentLayout
 			pages.addLast(state.chapterId, it)
 			adapter?.notifyDataSetChanged()
 			setCurrentItem(state.page, false)
-			if (state.scroll != 0f) {
+			if (state.scroll != 0) {
 				restorePageScroll(state.page, state.scroll)
 			}
 		}
@@ -200,7 +196,7 @@ abstract class AbstractReader(contentLayoutId: Int) : BaseFragment(contentLayout
 					if (pageId == 0L) {
 						0
 					} else {
-						it.indexOfFirst { it.id == pageId }.coerceAtLeast(0)
+						it.indexOfFirst { x -> x.id == pageId }.coerceAtLeast(0)
 					}, false
 				)
 			}
@@ -221,9 +217,9 @@ abstract class AbstractReader(contentLayoutId: Int) : BaseFragment(contentLayout
 
 	protected abstract fun getCurrentItem(): Int
 
-	protected abstract fun getCurrentPageScroll(): Float
+	protected abstract fun getCurrentPageScroll(): Int
 
-	protected abstract fun restorePageScroll(position: Int, scroll: Float)
+	protected abstract fun restorePageScroll(position: Int, scroll: Int)
 
 	protected abstract fun setCurrentItem(position: Int, isSmooth: Boolean)
 

app/src/main/java/org/koitharu/kotatsu/ui/reader/standard/PageHolder.kt

@@ -9,6 +9,7 @@ import kotlinx.android.synthetic.main.item_page.*
 import kotlinx.coroutines.*
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.model.MangaPage
+import org.koitharu.kotatsu.domain.MangaProviderFactory
 import org.koitharu.kotatsu.ui.common.list.BaseViewHolder
 import org.koitharu.kotatsu.ui.reader.PageLoader
 import org.koitharu.kotatsu.utils.ext.getDisplayMessage
@@ -43,7 +44,8 @@ class PageHolder(parent: ViewGroup, private val loader: PageLoader) :
 			ssiv.recycle()
 			try {
 				val uri = withContext(Dispatchers.IO) {
-					loader.loadFile(data.url, force)
+					val pageUrl = MangaProviderFactory.create(data.source).getPageFullUrl(data)
+					loader.loadFile(pageUrl, force)
 				}.toUri()
 				ssiv.setImage(ImageSource.uri(uri))
 			} catch (e: CancellationException) {

app/src/main/java/org/koitharu/kotatsu/ui/reader/standard/PagerReaderFragment.kt

@@ -62,9 +62,9 @@ class PagerReaderFragment : AbstractReader(R.layout.fragment_reader_standard),
 		pager.setCurrentItem(position, isSmooth)
 	}
 
-	override fun getCurrentPageScroll() = 0f
+	override fun getCurrentPageScroll() = 0
 
-	override fun restorePageScroll(position: Int, scroll: Float) = Unit
+	override fun restorePageScroll(position: Int, scroll: Int) = Unit
 
 	override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences?, key: String?) {
 		when (key) {

app/src/main/java/org/koitharu/kotatsu/ui/reader/thumbnails/PageThumbnailHolder.kt

@@ -3,7 +3,7 @@ package org.koitharu.kotatsu.ui.reader.thumbnails
 import android.view.ViewGroup
 import androidx.core.net.toUri
 import coil.Coil
-import coil.api.get
+import coil.request.GetRequestBuilder
 import coil.size.PixelSize
 import coil.size.Size
 import kotlinx.android.synthetic.main.item_page_thumb.*
@@ -38,9 +38,10 @@ class PageThumbnailHolder(parent: ViewGroup, private val scope: CoroutineScope)
 					val pageUrl = MangaProviderFactory.create(data.source).getPageFullUrl(data)
 					extra[pageUrl]?.toUri()?.toString() ?: pageUrl
 				}
-				val drawable = Coil.get(url) {
-					size(thumbSize)
-				}
+				val drawable = Coil.execute(GetRequestBuilder(context)
+					.data(url)
+					.size(thumbSize)
+					.build()).drawable
 				withContext(Dispatchers.Main) {
 					imageView_thumb.setImageDrawable(drawable)
 				}

app/src/main/java/org/koitharu/kotatsu/ui/reader/wetoon/WebtoonFrameLayout.kt

@@ -1,41 +1,24 @@
 package org.koitharu.kotatsu.ui.reader.wetoon
 
 import android.content.Context
-import android.graphics.RectF
 import android.util.AttributeSet
 import android.widget.FrameLayout
-import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
-import kotlinx.android.synthetic.main.item_page_webtoon.view.*
 import org.koitharu.kotatsu.R
 
 class WebtoonFrameLayout @JvmOverloads constructor(
 	context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
 ) : FrameLayout(context, attrs, defStyleAttr) {
 
-	private val pan = RectF()
-
 	private val target by lazy {
-		findViewById<SubsamplingScaleImageView>(R.id.ssiv)
+		findViewById<WebtoonImageView>(R.id.ssiv)
 	}
 
 	fun dispatchVerticalScroll(dy: Int): Int {
-		target.getPanRemaining(pan)
-		val c = target.center ?: return 0
-		val s = target.scale
-		return when {
-			dy > 0 -> {
-				val delta = minOf(pan.bottom.toInt(), dy)
-				c.offset(0f, delta.toFloat() / s)
-				target.setScaleAndCenter(s, c)
-				delta
-			}
-			dy < 0 -> {
-				val delta = minOf(pan.top.toInt(), -dy)
-				c.offset(0f, -delta.toFloat() / s)
-				target.setScaleAndCenter(s, c)
-				-delta
-			}
-			else -> 0
+		if (dy == 0) {
+			return 0
 		}
+		val oldScroll = target.getScroll()
+		target.scrollBy(dy)
+		return target.getScroll() - oldScroll
 	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/reader/wetoon/WebtoonHolder.kt

@@ -1,6 +1,5 @@
 package org.koitharu.kotatsu.ui.reader.wetoon
 
-import android.graphics.PointF
 import android.view.ViewGroup
 import androidx.core.net.toUri
 import androidx.core.view.isVisible
@@ -10,6 +9,7 @@ import kotlinx.android.synthetic.main.item_page_webtoon.*
 import kotlinx.coroutines.*
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.model.MangaPage
+import org.koitharu.kotatsu.domain.MangaProviderFactory
 import org.koitharu.kotatsu.ui.common.list.BaseViewHolder
 import org.koitharu.kotatsu.ui.reader.PageLoader
 import org.koitharu.kotatsu.utils.ext.getDisplayMessage
@@ -20,7 +20,7 @@ class WebtoonHolder(parent: ViewGroup, private val loader: PageLoader) :
 	SubsamplingScaleImageView.OnImageEventListener, CoroutineScope by loader {
 
 	private var job: Job? = null
-	private var scrollToRestore = 0f
+	private var scrollToRestore = 0
 
 	init {
 		ssiv.setOnImageEventListener(this)
@@ -35,14 +35,15 @@ class WebtoonHolder(parent: ViewGroup, private val loader: PageLoader) :
 
 	private fun doLoad(data: MangaPage, force: Boolean) {
 		job?.cancel()
-		scrollToRestore = 0f
+		scrollToRestore = 0
 		job = launch {
 			layout_error.isVisible = false
 			progressBar.isVisible = true
 			ssiv.recycle()
 			try {
 				val uri = withContext(Dispatchers.IO) {
-					loader.loadFile(data.url, force)
+					val pageUrl = MangaProviderFactory.create(data.source).getPageFullUrl(data)
+					loader.loadFile(pageUrl, force)
 				}.toUri()
 				ssiv.setImage(ImageSource.uri(uri))
 			} catch (e: CancellationException) {
@@ -58,17 +59,11 @@ class WebtoonHolder(parent: ViewGroup, private val loader: PageLoader) :
 		ssiv.recycle()
 	}
 
-	fun getScrollY() = ssiv.center?.y ?: 0f
+	fun getScrollY() = ssiv.getScroll()
 
-	fun restoreScroll(scroll: Float) {
+	fun restoreScroll(scroll: Int) {
 		if (ssiv.isReady) {
-			ssiv.setScaleAndCenter(
-				ssiv.scale,
-				PointF(
-					ssiv.sWidth / 2f,
-					scroll
-				)
-			)
+			ssiv.scrollTo(scroll)
 		} else {
 			scrollToRestore = scroll
 		}
@@ -78,17 +73,11 @@ class WebtoonHolder(parent: ViewGroup, private val loader: PageLoader) :
 		ssiv.maxScale = 2f * ssiv.width / ssiv.sWidth.toFloat()
 		ssiv.setMinimumScaleType(SubsamplingScaleImageView.SCALE_TYPE_CUSTOM)
 		ssiv.minScale = ssiv.width / ssiv.sWidth.toFloat()
-		ssiv.setScaleAndCenter(
-			ssiv.minScale,
-			PointF(
-				ssiv.sWidth / 2f,
-				when {
-					scrollToRestore != 0f -> scrollToRestore
-					itemView.top < 0 -> ssiv.sHeight.toFloat()
-					else -> 0f
-				}
-			)
-		)
+		ssiv.scrollTo(when {
+			scrollToRestore != 0 -> scrollToRestore
+			itemView.top < 0 -> ssiv.getScrollRange()
+			else -> 0
+		})
 	}
 
 	override fun onImageLoadError(e: Exception) = onError(e)

app/src/main/java/org/koitharu/kotatsu/ui/reader/wetoon/WebtoonImageView.kt

@@ -0,0 +1,67 @@
+package org.koitharu.kotatsu.ui.reader.wetoon
+
+import android.content.Context
+import android.graphics.PointF
+import android.util.AttributeSet
+import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
+import org.koitharu.kotatsu.utils.ext.toIntUp
+
+class WebtoonImageView @JvmOverloads constructor(context: Context, attr: AttributeSet? = null) :
+	SubsamplingScaleImageView(context, attr) {
+
+	private val ct = PointF()
+
+	private var scrollPos = 0
+	private var scrollRange = SCROLL_UNKNOWN
+
+	fun scrollBy(delta: Int) {
+		val maxScroll = getScrollRange()
+		if (maxScroll == 0) {
+			return
+		}
+		val newScroll = scrollPos + delta
+		scrollToInternal(newScroll.coerceIn(0, maxScroll))
+	}
+
+	fun scrollTo(y: Int) {
+		val maxScroll = getScrollRange()
+		if (maxScroll == 0) {
+			return
+		}
+		scrollToInternal(y.coerceIn(0, maxScroll))
+	}
+
+	fun getScroll() = scrollPos
+
+	fun getScrollRange(): Int {
+		if (scrollRange == SCROLL_UNKNOWN) {
+			computeScrollRange()
+		}
+		return scrollRange.coerceAtLeast(0)
+	}
+
+	override fun recycle() {
+		scrollRange = SCROLL_UNKNOWN
+		scrollPos = 0
+		super.recycle()
+	}
+
+	private fun scrollToInternal(pos: Int) {
+		scrollPos = pos
+		ct.set(sWidth / 2f, (height / 2f + pos.toFloat()) / minScale)
+		setScaleAndCenter(minScale, ct)
+	}
+
+	private fun computeScrollRange() {
+		if (!isReady) {
+			return
+		}
+		val totalHeight = (sHeight * minScale).toIntUp()
+		scrollRange = (totalHeight - height).coerceAtLeast(0)
+	}
+
+	private companion object {
+
+		const val SCROLL_UNKNOWN = -1
+	}
+}

app/src/main/java/org/koitharu/kotatsu/ui/reader/wetoon/WebtoonReaderFragment.kt

@@ -61,12 +61,12 @@ class WebtoonReaderFragment : AbstractReader(R.layout.fragment_reader_webtoon) {
 		)
 	}
 
-	override fun getCurrentPageScroll(): Float {
+	override fun getCurrentPageScroll(): Int {
 		return (recyclerView.findViewHolderForAdapterPosition(getCurrentItem()) as? WebtoonHolder)
-			?.getScrollY() ?: 0f
+			?.getScrollY() ?: 0
 	}
 
-	override fun restorePageScroll(position: Int, scroll: Float) {
+	override fun restorePageScroll(position: Int, scroll: Int) {
 		recyclerView.post {
 			val holder = recyclerView.findViewHolderForAdapterPosition(position) ?: return@post
 			(holder as WebtoonHolder).restoreScroll(scroll)

app/src/main/java/org/koitharu/kotatsu/ui/reader/wetoon/WebtoonRecyclerView.kt

@@ -2,16 +2,26 @@ package org.koitharu.kotatsu.ui.reader.wetoon
 
 import android.content.Context
 import android.util.AttributeSet
-import android.view.Gravity
-import android.view.View
-import androidx.core.view.children
+import androidx.core.view.ViewCompat
 import androidx.recyclerview.widget.RecyclerView
-import kotlin.math.sign
 
 class WebtoonRecyclerView @JvmOverloads constructor(
 	context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
 ) : RecyclerView(context, attrs, defStyleAttr) {
 
+	override fun startNestedScroll(axes: Int) = startNestedScroll(axes, ViewCompat.TYPE_TOUCH)
+
+	override fun startNestedScroll(axes: Int, type: Int): Boolean {
+		return true
+	}
+
+	override fun dispatchNestedPreScroll(
+		dx: Int,
+		dy: Int,
+		consumed: IntArray?,
+		offsetInWindow: IntArray?
+	) = dispatchNestedPreScroll(dx, dy, consumed, offsetInWindow, ViewCompat.TYPE_TOUCH)
+
 	override fun dispatchNestedPreScroll(
 		dx: Int,
 		dy: Int,
@@ -20,31 +30,47 @@ class WebtoonRecyclerView @JvmOverloads constructor(
 		type: Int
 	): Boolean {
 		val consumedY = consumeVerticalScroll(dy)
-		val superRes = super.dispatchNestedPreScroll(dx, dy, consumed, offsetInWindow, type)
-		consumed?.set(1, consumed[1] + consumedY)
-		return superRes || consumedY != 0
-	}
-
-	override fun dispatchNestedPreScroll(
-		dx: Int,
-		dy: Int,
-		consumed: IntArray?,
-		offsetInWindow: IntArray?
-	): Boolean {
-		val consumedY = consumeVerticalScroll(dy)
-		val superRes = super.dispatchNestedPreScroll(dx, dy, consumed, offsetInWindow)
-		consumed?.set(1, consumed[1] + consumedY)
-		return superRes || consumedY != 0
+		if (consumed != null) {
+			consumed[0] = 0
+			consumed[1] = consumedY
+		}
+		return consumedY != 0
 	}
 
 	private fun consumeVerticalScroll(dy: Int): Int {
-		val child = when {
-			dy > 0 -> children.firstOrNull { it is WebtoonFrameLayout }
-			dy < 0 -> children.lastOrNull { it is WebtoonFrameLayout }
-			else -> null
-		} ?: return 0
-		var scrollY = dy
-		scrollY -= (child as WebtoonFrameLayout).dispatchVerticalScroll(scrollY)
-		return dy - scrollY
+		if (childCount == 0) {
+			return 0
+		}
+		when {
+			dy > 0 -> {
+				val child = getChildAt(0) as WebtoonFrameLayout
+				var consumedByChild = child.dispatchVerticalScroll(dy)
+				if (consumedByChild < dy) {
+					if (childCount > 1) {
+						val nextChild = getChildAt(1) as WebtoonFrameLayout
+						val unconsumed = dy - consumedByChild - nextChild.top //will be consumed by scroll
+						if (unconsumed > 0) {
+							consumedByChild += nextChild.dispatchVerticalScroll(unconsumed)
+						}
+					}
+				}
+				return consumedByChild
+			}
+			dy < 0 -> {
+				val child = getChildAt(childCount - 1) as WebtoonFrameLayout
+				var consumedByChild = child.dispatchVerticalScroll(dy)
+				if (consumedByChild > dy) {
+					if (childCount > 1) {
+						val nextChild = getChildAt(childCount - 2) as WebtoonFrameLayout
+						val unconsumed = dy - consumedByChild + (height - nextChild.bottom) //will be consumed by scroll
+						if (unconsumed < 0) {
+							consumedByChild += nextChild.dispatchVerticalScroll(unconsumed)
+						}
+					}
+				}
+				return consumedByChild
+			}
+		}
+		return 0
 	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/settings/AppUpdateService.kt

@@ -164,7 +164,7 @@ class AppUpdateService : BaseService() {
 			}
 			return try {
 				val md: MessageDigest = MessageDigest.getInstance("SHA1")
-				val publicKey: ByteArray = md.digest(c.getEncoded())
+				val publicKey: ByteArray = md.digest(c.encoded)
 				publicKey.byte2HexFormatted()
 			} catch (e: NoSuchAlgorithmException) {
 				e.printStackTrace()

app/src/main/java/org/koitharu/kotatsu/ui/settings/MainSettingsFragment.kt

@@ -16,13 +16,17 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.model.MangaSource
 import org.koitharu.kotatsu.core.prefs.ListMode
 import org.koitharu.kotatsu.ui.common.BasePreferenceFragment
+import org.koitharu.kotatsu.ui.common.dialog.StorageSelectDialog
 import org.koitharu.kotatsu.ui.main.list.ListModeSelectDialog
 import org.koitharu.kotatsu.ui.settings.utils.MultiSummaryProvider
 import org.koitharu.kotatsu.ui.tracker.TrackWorker
+import org.koitharu.kotatsu.utils.ext.getStorageName
+import java.io.File
 
 
 class MainSettingsFragment : BasePreferenceFragment(R.string.settings),
-	SharedPreferences.OnSharedPreferenceChangeListener {
+	SharedPreferences.OnSharedPreferenceChangeListener,
+	StorageSelectDialog.OnStorageSelectListener {
 
 	override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
 		addPreferencesFromResource(R.xml.pref_main)
@@ -40,15 +44,25 @@ class MainSettingsFragment : BasePreferenceFragment(R.string.settings),
 		findPreference<Preference>(R.string.key_app_update_auto)?.run {
 			isVisible = AppUpdateService.isUpdateSupported(context)
 		}
+		findPreference<Preference>(R.string.key_local_storage)?.run {
+			summary = settings.getStorageDir(context)?.getStorageName(context)
+				?: getString(R.string.not_available)
+		}
 	}
 
-	override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences?, key: String?) {
+	override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences, key: String?) {
 		when (key) {
 			getString(R.string.key_list_mode) -> findPreference<Preference>(R.string.key_list_mode)?.summary =
 				LIST_MODES[settings.listMode]?.let(::getString)
 			getString(R.string.key_theme) -> {
 				AppCompatDelegate.setDefaultNightMode(settings.theme)
 			}
+			getString(R.string.key_local_storage) -> {
+				findPreference<Preference>(R.string.key_local_storage)?.run {
+					summary = settings.getStorageDir(context)?.getStorageName(context)
+						?: getString(R.string.not_available)
+				}
+			}
 		}
 	}
 
@@ -89,10 +103,23 @@ class MainSettingsFragment : BasePreferenceFragment(R.string.settings),
 				}
 				true
 			}
+			getString(R.string.key_local_storage) -> {
+				val ctx = context ?: return false
+				StorageSelectDialog.Builder(ctx, settings.getStorageDir(ctx),this)
+					.setTitle(preference.title)
+					.setNegativeButton(android.R.string.cancel)
+					.create()
+					.show()
+				true
+			}
 			else -> super.onPreferenceTreeClick(preference)
 		}
 	}
 
+	override fun onStorageSelected(file: File) {
+		settings.setStorageDir(context ?: return, file)
+	}
+
 	private companion object {
 
 		val LIST_MODES = arrayMapOf(

app/src/main/java/org/koitharu/kotatsu/ui/settings/SettingsActivity.kt

@@ -30,6 +30,7 @@ class SettingsActivity : BaseActivity(),
 		}
 	}
 
+	@Suppress("DEPRECATION")
 	override fun onPreferenceStartFragment(caller: PreferenceFragmentCompat, pref: Preference): Boolean {
 		val fm = supportFragmentManager
 		val fragment = fm.fragmentFactory.instantiate(classLoader, pref.fragment)

app/src/main/java/org/koitharu/kotatsu/ui/settings/sources/SourcesAdapter.kt

@@ -47,11 +47,11 @@ class SourcesAdapter(private val onItemClickListener: OnRecyclerItemClickListene
 			settings.hiddenSources = hiddenItems.map { x -> x.name }.toSet()
 		}
 		holder.imageView_config.setOnClickListener { v ->
-			onItemClickListener.onItemClick(holder.requireData(), holder.adapterPosition, v)
+			onItemClickListener.onItemClick(holder.requireData(), holder.bindingAdapterPosition, v)
 		}
 		holder.imageView_handle.setOnTouchListener { v, event ->
 			if (event.actionMasked == MotionEvent.ACTION_DOWN) {
-				onItemClickListener.onItemLongClick(holder.requireData(), holder.adapterPosition, v)
+				onItemClickListener.onItemLongClick(holder.requireData(), holder.bindingAdapterPosition, v)
 			} else {
 				false
 			}

app/src/main/java/org/koitharu/kotatsu/ui/settings/sources/SourcesReorderCallback.kt

@@ -11,8 +11,8 @@ class SourcesReorderCallback : ItemTouchHelper.SimpleCallback(ItemTouchHelper.DO
 		target: RecyclerView.ViewHolder
 	): Boolean {
 		val adapter = recyclerView.adapter as? SourcesAdapter ?: return false
-		val oldPos = viewHolder.adapterPosition
-		val newPos = target.adapterPosition
+		val oldPos = viewHolder.bindingAdapterPosition
+		val newPos = target.bindingAdapterPosition
 		adapter.moveItem(oldPos, newPos)
 		return true
 	}

app/src/main/java/org/koitharu/kotatsu/ui/settings/sources/SourcesSettingsFragment.kt

@@ -2,7 +2,9 @@ package org.koitharu.kotatsu.ui.settings.sources
 
 import android.os.Bundle
 import android.view.View
+import androidx.recyclerview.widget.DividerItemDecoration
 import androidx.recyclerview.widget.ItemTouchHelper
+import androidx.recyclerview.widget.RecyclerView
 import kotlinx.android.synthetic.main.fragment_settings_sources.*
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.model.MangaSource
@@ -27,6 +29,7 @@ class SourcesSettingsFragment : BaseFragment(R.layout.fragment_settings_sources)
 
 	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
 		super.onViewCreated(view, savedInstanceState)
+		recyclerView.addItemDecoration(DividerItemDecoration(view.context, RecyclerView.VERTICAL))
 		recyclerView.adapter = SourcesAdapter(this)
 		reorderHelper.attachToRecyclerView(recyclerView)
 	}
@@ -42,6 +45,6 @@ class SourcesSettingsFragment : BaseFragment(R.layout.fragment_settings_sources)
 
 	override fun onItemLongClick(item: MangaSource, position: Int, view: View): Boolean {
 		reorderHelper.startDrag(recyclerView.findViewHolderForAdapterPosition(position) ?: return false)
-		return super.onItemLongClick(item, position, view)
+		return true
 	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/tracker/TrackWorker.kt

@@ -8,10 +8,9 @@ import android.os.Build
 import androidx.annotation.RequiresApi
 import androidx.core.app.NotificationCompat
 import androidx.core.content.ContextCompat
-import androidx.core.graphics.drawable.toBitmap
 import androidx.work.*
 import coil.Coil
-import coil.api.get
+import coil.request.GetRequestBuilder
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import org.koin.core.KoinComponent
@@ -24,6 +23,7 @@ import org.koitharu.kotatsu.domain.MangaProviderFactory
 import org.koitharu.kotatsu.domain.tracking.TrackingRepository
 import org.koitharu.kotatsu.ui.details.MangaDetailsActivity
 import org.koitharu.kotatsu.utils.ext.safe
+import org.koitharu.kotatsu.utils.ext.toBitmapOrNull
 import org.koitharu.kotatsu.utils.ext.toUriOrNull
 import java.util.concurrent.TimeUnit
 
@@ -134,11 +134,11 @@ class TrackWorker(context: Context, workerParams: WorkerParameters) :
 			newChapters.size, newChapters.size)
 		with(builder) {
 			setContentText(summary)
-			setContentText(manga.title)
+			setContentTitle(manga.title)
 			setNumber(newChapters.size)
-			setLargeIcon(safe {
-				Coil.loader().get(manga.coverUrl).toBitmap()
-			})
+			setLargeIcon(Coil.execute(GetRequestBuilder(applicationContext)
+				.data(manga.coverUrl)
+				.build()).toBitmapOrNull())
 			setSmallIcon(R.drawable.ic_stat_book_plus)
 			val style = NotificationCompat.InboxStyle(this)
 			for (chapter in newChapters) {
@@ -152,6 +152,7 @@ class TrackWorker(context: Context, workerParams: WorkerParameters) :
 				intent, PendingIntent.FLAG_UPDATE_CURRENT))
 			setAutoCancel(true)
 			color = colorPrimary
+			setShortcutId(manga.id.toString())
 			priority = NotificationCompat.PRIORITY_DEFAULT
 			if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
 				builder.setSound(settings.notificationSound.toUriOrNull())

app/src/main/java/org/koitharu/kotatsu/ui/utils/AppCrashHandler.kt

@@ -2,6 +2,7 @@ package org.koitharu.kotatsu.ui.utils
 
 import android.content.Context
 import android.content.Intent
+import android.util.Log
 import java.io.PrintWriter
 import java.io.StringWriter
 import kotlin.system.exitProcess
@@ -22,7 +23,7 @@ class AppCrashHandler(private val applicationContext: Context) : Thread.Uncaught
 		} catch (t: Throwable) {
 			t.printStackTrace()
 		}
-		e.printStackTrace()
+		Log.e("CRASH", e.message, e)
 		exitProcess(1)
 	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/widget/WidgetUpdater.kt

@@ -20,6 +20,8 @@ class WidgetUpdater(private val context: Context) : OnFavouritesChangeListener,
 		updateWidget(RecentWidgetProvider::class.java)
 	}
 
+	override fun onCategoriesChanged() = Unit
+
 	private fun updateWidget(cls: Class<*>) {
 		val intent = Intent(context, cls)
 		intent.action = AppWidgetManager.ACTION_APPWIDGET_UPDATE

app/src/main/java/org/koitharu/kotatsu/ui/widget/recent/RecentListFactory.kt

@@ -4,19 +4,17 @@ import android.content.Context
 import android.content.Intent
 import android.widget.RemoteViews
 import android.widget.RemoteViewsService
-import androidx.core.graphics.drawable.toBitmap
 import coil.Coil
-import coil.api.get
+import coil.request.GetRequestBuilder
 import kotlinx.coroutines.runBlocking
-import okio.IOException
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.model.Manga
 import org.koitharu.kotatsu.domain.history.HistoryRepository
 import org.koitharu.kotatsu.ui.details.MangaDetailsActivity
+import org.koitharu.kotatsu.utils.ext.requireBitmap
+import java.io.IOException
 
-class RecentListFactory(context: Context, private val intent: Intent) : RemoteViewsService.RemoteViewsFactory {
-
-	private val packageName = context.packageName
+class RecentListFactory(private val context: Context) : RemoteViewsService.RemoteViewsFactory {
 
 	private val dataSet = ArrayList<Manga>()
 
@@ -36,11 +34,13 @@ class RecentListFactory(context: Context, private val intent: Intent) : RemoteVi
 	override fun hasStableIds() = true
 
 	override fun getViewAt(position: Int): RemoteViews {
-		val views = RemoteViews(packageName, R.layout.item_recent)
+		val views = RemoteViews(context.packageName, R.layout.item_recent)
 		val item = dataSet[position]
 		try {
 			val cover = runBlocking {
-				Coil.loader().get(item.coverUrl).toBitmap()
+				Coil.execute(GetRequestBuilder(context)
+					.data(item.coverUrl)
+					.build()).requireBitmap()
 			}
 			views.setImageViewBitmap(R.id.imageView_cover, cover)
 		} catch (e: IOException) {

app/src/main/java/org/koitharu/kotatsu/ui/widget/recent/RecentWidgetService.kt

@@ -6,6 +6,6 @@ import android.widget.RemoteViewsService
 class RecentWidgetService : RemoteViewsService() {
 
 	override fun onGetViewFactory(intent: Intent): RemoteViewsFactory {
-		return RecentListFactory(this, intent)
+		return RecentListFactory(this)
 	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/widget/shelf/CategorySelectAdapter.kt

@@ -0,0 +1,35 @@
+package org.koitharu.kotatsu.ui.widget.shelf
+
+import android.view.ViewGroup
+import org.koitharu.kotatsu.core.model.FavouriteCategory
+import org.koitharu.kotatsu.ui.common.list.BaseRecyclerAdapter
+import org.koitharu.kotatsu.ui.common.list.OnRecyclerItemClickListener
+
+class CategorySelectAdapter(onItemClickListener: OnRecyclerItemClickListener<FavouriteCategory>? = null) :
+	BaseRecyclerAdapter<FavouriteCategory, Boolean>(onItemClickListener) {
+
+	var checkedItemId = 0L
+		private set
+
+	fun setCheckedId(id: Long) {
+		val oldId = checkedItemId
+		checkedItemId = id
+		val oldPos = findItemPositionById(oldId)
+		val newPos = findItemPositionById(id)
+		if (newPos != -1) {
+			notifyItemChanged(newPos)
+		}
+		if (oldPos != -1) {
+			notifyItemChanged(oldPos)
+		}
+	}
+
+	override fun getExtra(item: FavouriteCategory, position: Int) =
+		checkedItemId == item.id
+
+	override fun onCreateViewHolder(parent: ViewGroup) = CategorySelectHolder(
+		parent
+	)
+
+	override fun onGetItemId(item: FavouriteCategory) = item.id
+}

app/src/main/java/org/koitharu/kotatsu/ui/widget/shelf/CategorySelectHolder.kt

@@ -0,0 +1,16 @@
+package org.koitharu.kotatsu.ui.widget.shelf
+
+import android.view.ViewGroup
+import kotlinx.android.synthetic.main.item_category_checkable.*
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.model.FavouriteCategory
+import org.koitharu.kotatsu.ui.common.list.BaseViewHolder
+
+class CategorySelectHolder(parent: ViewGroup) :
+	BaseViewHolder<FavouriteCategory, Boolean>(parent, R.layout.item_category_checkable_single) {
+
+	override fun onBind(data: FavouriteCategory, extra: Boolean) {
+		checkedTextView.text = data.title
+		checkedTextView.isChecked = extra
+	}
+}