Update parsers

Currently translated at 100.0% (416 of 416 strings)

Co-authored-by: gallegonovato <fran-carro@hotmail.es>
Translate-URL: https://hosted.weblate.org/projects/kotatsu/strings/es/
Translation: Kotatsu/Strings

app/build.gradle

@@ -15,8 +15,8 @@ android {
 		applicationId 'org.koitharu.kotatsu'
 		minSdkVersion 21
 		targetSdkVersion 33
-		versionCode 540
-		versionName '5.0.2'
+		versionCode 546
+		versionName '5.1.2'
 		generatedDensities = []
 		testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 
@@ -78,15 +78,15 @@ afterEvaluate {
 }
 dependencies {
 	//noinspection GradleDependency
-	implementation('com.github.KotatsuApp:kotatsu-parsers:96b9ac36f3') {
+	implementation('com.github.KotatsuApp:kotatsu-parsers:ebcc6391d6') {
 		exclude group: 'org.json', module: 'json'
 	}
 
 	implementation 'org.jetbrains.kotlin:kotlin-stdlib:1.8.21'
-	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.6.4'
+	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.7.1'
 
 	implementation 'androidx.appcompat:appcompat:1.6.1'
-	implementation 'androidx.core:core-ktx:1.10.0'
+	implementation 'androidx.core:core-ktx:1.10.1'
 	implementation 'androidx.activity:activity-ktx:1.7.1'
 	implementation 'androidx.fragment:fragment-ktx:1.5.7'
 	implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.6.1'
@@ -98,12 +98,19 @@ dependencies {
 	implementation 'androidx.recyclerview:recyclerview:1.3.0'
 	implementation 'androidx.viewpager2:viewpager2:1.1.0-beta01'
 	implementation 'androidx.preference:preference-ktx:1.2.0'
-	implementation 'androidx.work:work-runtime-ktx:2.8.1'
 	implementation 'androidx.biometric:biometric-ktx:1.2.0-alpha05'
 	implementation 'com.google.android.material:material:1.9.0'
 	//noinspection LifecycleAnnotationProcessorWithJava8
 	kapt 'androidx.lifecycle:lifecycle-compiler:2.6.1'
 
+	implementation 'androidx.work:work-runtime-ktx:2.8.1'
+	//noinspection GradleDependency
+	implementation('com.google.guava:guava:31.1-android') {
+		exclude group: 'com.google.guava', module: 'failureaccess'
+		exclude group: 'org.checkerframework', module: 'checker-qual'
+		exclude group: 'com.google.j2objc', module: 'j2objc-annotations'
+	}
+
 	implementation 'androidx.room:room-runtime:2.5.1'
 	implementation 'androidx.room:room-ktx:2.5.1'
 	kapt 'androidx.room:room-compiler:2.5.1'
@@ -115,8 +122,8 @@ dependencies {
 	implementation 'com.hannesdorfmann:adapterdelegates4-kotlin-dsl:4.3.2'
 	implementation 'com.hannesdorfmann:adapterdelegates4-kotlin-dsl-viewbinding:4.3.2'
 
-	implementation 'com.google.dagger:hilt-android:2.45'
-	kapt 'com.google.dagger:hilt-compiler:2.45'
+	implementation 'com.google.dagger:hilt-android:2.46.1'
+	kapt 'com.google.dagger:hilt-compiler:2.46.1'
 	implementation 'androidx.hilt:hilt-work:1.0.0'
 	kapt 'androidx.hilt:hilt-compiler:1.0.0'
 
@@ -133,18 +140,18 @@ dependencies {
 
 	testImplementation 'junit:junit:4.13.2'
 	testImplementation 'org.json:json:20230227'
-	testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.4'
+	testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.7.1'
 
 	androidTestImplementation 'androidx.test:runner:1.5.2'
 	androidTestImplementation 'androidx.test:rules:1.5.0'
 	androidTestImplementation 'androidx.test:core-ktx:1.5.0'
 	androidTestImplementation 'androidx.test.ext:junit-ktx:1.1.5'
 
-	androidTestImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.4'
+	androidTestImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.7.1'
 
 	androidTestImplementation 'androidx.room:room-testing:2.5.1'
-	androidTestImplementation 'com.squareup.moshi:moshi-kotlin:1.14.0'
+	androidTestImplementation 'com.squareup.moshi:moshi-kotlin:1.15.0'
 
-	androidTestImplementation 'com.google.dagger:hilt-android-testing:2.45'
-	kaptAndroidTest 'com.google.dagger:hilt-android-compiler:2.45'
+	androidTestImplementation 'com.google.dagger:hilt-android-testing:2.46.1'
+	kaptAndroidTest 'com.google.dagger:hilt-android-compiler:2.46.1'
 }

app/proguard-rules.pro

@@ -1,4 +1,5 @@
 -optimizationpasses 8
+-dontobfuscate
 -assumenosideeffects class kotlin.jvm.internal.Intrinsics {
 	public static void checkExpressionValueIsNotNull(...);
 	public static void checkNotNullExpressionValue(...);

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

@@ -5,8 +5,6 @@ import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.platform.app.InstrumentationRegistry
 import dagger.hilt.android.testing.HiltAndroidRule
 import dagger.hilt.android.testing.HiltAndroidTest
-import java.io.File
-import javax.inject.Inject
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.test.runTest
 import org.junit.Assert.*
@@ -20,6 +18,8 @@ import org.koitharu.kotatsu.core.db.MangaDatabase
 import org.koitharu.kotatsu.core.db.entity.toMangaTags
 import org.koitharu.kotatsu.favourites.domain.FavouritesRepository
 import org.koitharu.kotatsu.history.domain.HistoryRepository
+import java.io.File
+import javax.inject.Inject
 
 @HiltAndroidTest
 @RunWith(AndroidJUnit4::class)
@@ -52,6 +52,7 @@ class AppBackupAgentTest {
 			title = SampleData.favouriteCategory.title,
 			sortOrder = SampleData.favouriteCategory.order,
 			isTrackerEnabled = SampleData.favouriteCategory.isTrackingEnabled,
+			isVisibleOnShelf = SampleData.favouriteCategory.isVisibleInLibrary,
 		)
 		favouritesRepository.addToCategory(categoryId = category.id, mangas = listOf(SampleData.manga))
 		historyRepository.addOrUpdate(

app/src/main/AndroidManifest.xml

@@ -95,6 +95,7 @@
 
 				<data android:scheme="kotatsu" />
 				<data android:host="about" />
+				<data android:host="sync-settings" />
 			</intent-filter>
 		</activity>
 		<activity
@@ -128,7 +129,7 @@
 			android:name="org.koitharu.kotatsu.settings.protect.ProtectSetupActivity"
 			android:windowSoftInputMode="adjustResize" />
 		<activity
-			android:name="org.koitharu.kotatsu.download.ui.DownloadsActivity"
+			android:name="org.koitharu.kotatsu.download.ui.list.DownloadsActivity"
 			android:label="@string/downloads"
 			android:launchMode="singleTop" />
 		<activity android:name="org.koitharu.kotatsu.image.ui.ImageActivity" />
@@ -162,10 +163,6 @@
 
 		</activity>
 
-		<service
-			android:name="org.koitharu.kotatsu.download.ui.service.DownloadService"
-			android:foregroundServiceType="dataSync"
-			android:stopWithTask="false" />
 		<service android:name="org.koitharu.kotatsu.local.ui.LocalChaptersRemoveService" />
 		<service
 			android:name="org.koitharu.kotatsu.widget.shelf.ShelfWidgetService"
@@ -240,7 +237,13 @@
 		<provider
 			android:name="androidx.startup.InitializationProvider"
 			android:authorities="${applicationId}.androidx-startup"
-			tools:node="remove" />
+			android:exported="false"
+			tools:node="remove">
+			<meta-data
+				android:name="androidx.work.WorkManagerInitializer"
+				android:value="androidx.startup"
+				tools:node="remove" />
+		</provider>
 
 		<receiver
 			android:name="org.koitharu.kotatsu.widget.shelf.ShelfWidgetProvider"

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

@@ -24,6 +24,7 @@ import org.koitharu.kotatsu.local.data.PagesCache
 import org.koitharu.kotatsu.local.domain.LocalMangaRepository
 import org.koitharu.kotatsu.parsers.MangaLoaderContext
 import org.koitharu.kotatsu.reader.domain.PageLoader
+import org.koitharu.kotatsu.utils.WorkServiceStopHelper
 import org.koitharu.kotatsu.utils.ext.processLifecycleScope
 import javax.inject.Inject
 
@@ -56,6 +57,7 @@ class KotatsuApp : Application(), Configuration.Provider {
 		processLifecycleScope.launch(Dispatchers.Default) {
 			setupDatabaseObservers()
 		}
+		WorkServiceStopHelper(applicationContext).setup()
 	}
 
 	override fun attachBaseContext(base: Context?) {

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

@@ -2,6 +2,8 @@ package org.koitharu.kotatsu.base.ui
 
 import android.content.Intent
 import android.content.res.Configuration
+import android.graphics.Color
+import android.os.Build
 import android.os.Bundle
 import android.view.KeyEvent
 import android.view.MenuItem
@@ -48,6 +50,8 @@ abstract class BaseActivity<B : ViewBinding> :
 	@JvmField
 	val actionModeDelegate = ActionModeDelegate()
 
+	private var defaultStatusBarColor = Color.TRANSPARENT
+
 	override fun onCreate(savedInstanceState: Bundle?) {
 		val settings = EntryPointAccessors.fromApplication(this, BaseActivityEntryPoint::class.java).settings
 		isAmoledTheme = settings.isAmoledTheme
@@ -119,10 +123,14 @@ abstract class BaseActivity<B : ViewBinding> :
 	override fun onSupportActionModeStarted(mode: ActionMode) {
 		super.onSupportActionModeStarted(mode)
 		actionModeDelegate.onSupportActionModeStarted(mode)
-		val actionModeColor = ColorUtils.compositeColors(
-			ContextCompat.getColor(this, com.google.android.material.R.color.m3_appbar_overlay_color),
-			getThemeColor(com.google.android.material.R.attr.colorSurface),
-		)
+		val actionModeColor = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+			ColorUtils.compositeColors(
+				ContextCompat.getColor(this, com.google.android.material.R.color.m3_appbar_overlay_color),
+				getThemeColor(com.google.android.material.R.attr.colorSurface),
+			)
+		} else {
+			ContextCompat.getColor(this, R.color.kotatsu_secondaryContainer)
+		}
 		val insets = ViewCompat.getRootWindowInsets(binding.root)
 			?.getInsets(WindowInsetsCompat.Type.systemBars()) ?: return
 		findViewById<ActionBarContextView?>(androidx.appcompat.R.id.action_mode_bar).apply {
@@ -131,6 +139,7 @@ abstract class BaseActivity<B : ViewBinding> :
 				topMargin = insets.top
 			}
 		}
+		defaultStatusBarColor = window.statusBarColor
 		window.statusBarColor = actionModeColor
 	}
 
@@ -138,7 +147,7 @@ abstract class BaseActivity<B : ViewBinding> :
 	override fun onSupportActionModeFinished(mode: ActionMode) {
 		super.onSupportActionModeFinished(mode)
 		actionModeDelegate.onSupportActionModeFinished(mode)
-		window.statusBarColor = getThemeColor(android.R.attr.statusBarColor)
+		window.statusBarColor = defaultStatusBarColor
 	}
 
 	private fun putDataToExtras(intent: Intent?) {

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

@@ -0,0 +1,93 @@
+package org.koitharu.kotatsu.base.ui.dialog
+
+import android.content.Context
+import android.content.DialogInterface
+import androidx.annotation.DrawableRes
+import androidx.annotation.StringRes
+import androidx.appcompat.app.AlertDialog
+import androidx.core.view.updatePadding
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import com.hannesdorfmann.adapterdelegates4.AdapterDelegate
+import com.hannesdorfmann.adapterdelegates4.AdapterDelegatesManager
+import com.hannesdorfmann.adapterdelegates4.ListDelegationAdapter
+import org.koitharu.kotatsu.R
+
+class RecyclerViewAlertDialog private constructor(
+	private val delegate: AlertDialog
+) : DialogInterface by delegate {
+
+	fun show() = delegate.show()
+
+	class Builder<T>(context: Context) {
+
+		private val recyclerView = RecyclerView(context)
+		private val delegatesManager = AdapterDelegatesManager<List<T>>()
+		private var items: List<T>? = null
+
+		private val delegate = MaterialAlertDialogBuilder(context)
+			.setView(recyclerView)
+
+		init {
+			recyclerView.layoutManager = LinearLayoutManager(context)
+			recyclerView.updatePadding(
+				top = context.resources.getDimensionPixelOffset(R.dimen.list_spacing),
+			)
+			recyclerView.clipToPadding = false
+		}
+
+		fun setTitle(@StringRes titleResId: Int): Builder<T> {
+			delegate.setTitle(titleResId)
+			return this
+		}
+
+		fun setTitle(title: CharSequence): Builder<T> {
+			delegate.setTitle(title)
+			return this
+		}
+
+		fun setIcon(@DrawableRes iconId: Int): Builder<T> {
+			delegate.setIcon(iconId)
+			return this
+		}
+
+		fun setPositiveButton(
+			@StringRes textId: Int,
+			listener: DialogInterface.OnClickListener,
+		): Builder<T> {
+			delegate.setPositiveButton(textId, listener)
+			return this
+		}
+
+		fun setNegativeButton(
+			@StringRes textId: Int,
+			listener: DialogInterface.OnClickListener? = null
+		): Builder<T> {
+			delegate.setNegativeButton(textId, listener)
+			return this
+		}
+
+		fun setCancelable(isCancelable: Boolean): Builder<T> {
+			delegate.setCancelable(isCancelable)
+			return this
+		}
+
+		fun addAdapterDelegate(subject: AdapterDelegate<List<T>>): Builder<T> {
+			delegatesManager.addDelegate(subject)
+			return this
+		}
+
+		fun setItems(list: List<T>): Builder<T> {
+			items = list
+			return this
+		}
+
+		fun create(): RecyclerViewAlertDialog {
+			recyclerView.adapter = ListDelegationAdapter(delegatesManager).also {
+				it.items = items
+			}
+			return RecyclerViewAlertDialog(delegate.create())
+		}
+	}
+}

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

@@ -0,0 +1,79 @@
+package org.koitharu.kotatsu.base.ui.dialog
+
+import android.content.Context
+import android.content.DialogInterface
+import android.view.LayoutInflater
+import androidx.annotation.DrawableRes
+import androidx.annotation.StringRes
+import androidx.appcompat.app.AlertDialog
+import androidx.core.view.isVisible
+import com.google.android.material.button.MaterialButton
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import org.koitharu.kotatsu.databinding.DialogTwoButtonsBinding
+
+class TwoButtonsAlertDialog private constructor(
+	private val delegate: AlertDialog
+) : DialogInterface by delegate {
+
+	fun show() = delegate.show()
+
+	class Builder(context: Context) {
+
+		private val binding = DialogTwoButtonsBinding.inflate(LayoutInflater.from(context))
+
+		private val delegate = MaterialAlertDialogBuilder(context)
+			.setView(binding.root)
+
+		fun setTitle(@StringRes titleResId: Int): Builder {
+			binding.title.setText(titleResId)
+			return this
+		}
+
+		fun setTitle(title: CharSequence): Builder {
+			binding.title.text = title
+			return this
+		}
+
+		fun setIcon(@DrawableRes iconId: Int): Builder {
+			binding.icon.setImageResource(iconId)
+			return this
+		}
+
+		fun setPositiveButton(
+			@StringRes textId: Int,
+			listener: DialogInterface.OnClickListener,
+		): Builder {
+			initButton(binding.button1, DialogInterface.BUTTON_POSITIVE, textId, listener)
+			return this
+		}
+
+		fun setNegativeButton(
+			@StringRes textId: Int,
+			listener: DialogInterface.OnClickListener? = null
+		): Builder {
+			initButton(binding.button2, DialogInterface.BUTTON_NEGATIVE, textId, listener)
+			return this
+		}
+
+		fun create(): TwoButtonsAlertDialog {
+			val dialog = delegate.create()
+			binding.root.tag = dialog
+			return TwoButtonsAlertDialog(dialog)
+		}
+
+		private fun initButton(
+			button: MaterialButton,
+			which: Int,
+			@StringRes textId: Int,
+			listener: DialogInterface.OnClickListener?,
+		) {
+			button.setText(textId)
+			button.isVisible = true
+			button.setOnClickListener {
+				val dialog = binding.root.tag as DialogInterface
+				listener?.onClick(dialog, which)
+				dialog.dismiss()
+			}
+		}
+	}
+}

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

@@ -8,19 +8,22 @@ abstract class BoundsScrollListener(private val offsetTop: Int, private val offs
 
 	override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
 		super.onScrolled(recyclerView, dx, dy)
+		if (recyclerView.hasPendingAdapterUpdates()) {
+			return
+		}
 		val layoutManager = (recyclerView.layoutManager as? LinearLayoutManager) ?: return
 		val firstVisibleItemPosition = layoutManager.findFirstVisibleItemPosition()
 		if (firstVisibleItemPosition == RecyclerView.NO_POSITION) {
 			return
 		}
-		if (firstVisibleItemPosition <= offsetTop) {
-			onScrolledToStart(recyclerView)
-		}
 		val visibleItemCount = layoutManager.childCount
 		val totalItemCount = layoutManager.itemCount
 		if (visibleItemCount + firstVisibleItemPosition >= totalItemCount - offsetBottom) {
 			onScrolledToEnd(recyclerView)
 		}
+		if (firstVisibleItemPosition <= offsetTop) {
+			onScrolledToStart(recyclerView)
+		}
 	}
 
 	abstract fun onScrolledToStart(recyclerView: RecyclerView)

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

@@ -2,9 +2,9 @@ package org.koitharu.kotatsu.base.ui.list
 
 import android.view.View
 
-interface OnListItemClickListener<I> {
+fun interface OnListItemClickListener<I> {
 
 	fun onItemClick(item: I, view: View)
 
 	fun onItemLongClick(item: I, view: View) = false
-}
+}

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

@@ -0,0 +1,30 @@
+package org.koitharu.kotatsu.base.ui.list
+
+import androidx.recyclerview.widget.RecyclerView
+
+class ScrollListenerInvalidationObserver(
+	private val recyclerView: RecyclerView,
+	private val scrollListener: RecyclerView.OnScrollListener,
+) : RecyclerView.AdapterDataObserver() {
+
+	override fun onChanged() {
+		super.onChanged()
+		invalidateScroll()
+	}
+
+	override fun onItemRangeInserted(positionStart: Int, itemCount: Int) {
+		super.onItemRangeInserted(positionStart, itemCount)
+		invalidateScroll()
+	}
+
+	override fun onItemRangeRemoved(positionStart: Int, itemCount: Int) {
+		super.onItemRangeRemoved(positionStart, itemCount)
+		invalidateScroll()
+	}
+
+	private fun invalidateScroll() {
+		recyclerView.post {
+			scrollListener.onScrolled(recyclerView, 0, 0)
+		}
+	}
+}

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

@@ -5,8 +5,6 @@ import androidx.lifecycle.Observer
 import com.google.android.material.snackbar.Snackbar
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.base.domain.reverseAsync
-import org.koitharu.kotatsu.main.ui.owners.BottomNavOwner
-import org.koitharu.kotatsu.utils.ext.findActivity
 
 class ReversibleActionObserver(
 	private val snackbarHost: View,
@@ -22,9 +20,6 @@ class ReversibleActionObserver(
 		if (handle != null) {
 			snackbar.setAction(R.string.undo) { handle.reverseAsync() }
 		}
-		(snackbarHost.context.findActivity() as? BottomNavOwner)?.let {
-			snackbar.anchorView = it.bottomNav
-		}
 		snackbar.show()
 	}
 }

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

@@ -10,9 +10,7 @@ import com.google.android.material.floatingactionbutton.ExtendedFloatingActionBu
 
 open class ShrinkOnScrollBehavior : Behavior<ExtendedFloatingActionButton> {
 
-	@Suppress("unused")
 	constructor() : super()
-	@Suppress("unused")
 	constructor(context: Context?, attrs: AttributeSet?) : super(context, attrs)
 
 	override fun onStartNestedScroll(

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

@@ -15,6 +15,7 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.base.ui.BaseActivity
 import org.koitharu.kotatsu.core.network.CommonHeadersInterceptor
 import org.koitharu.kotatsu.databinding.ActivityBrowserBinding
+import org.koitharu.kotatsu.utils.ext.catchingWebViewUnavailability
 import com.google.android.material.R as materialR
 
 @SuppressLint("SetJavaScriptEnabled")
@@ -24,7 +25,9 @@ class BrowserActivity : BaseActivity<ActivityBrowserBinding>(), BrowserCallback
 
 	override fun onCreate(savedInstanceState: Bundle?) {
 		super.onCreate(savedInstanceState)
-		setContentView(ActivityBrowserBinding.inflate(layoutInflater))
+		if (!catchingWebViewUnavailability { setContentView(ActivityBrowserBinding.inflate(layoutInflater)) }) {
+			return
+		}
 		supportActionBar?.run {
 			setDisplayHomeAsUpEnabled(true)
 			setHomeAsUpIndicator(materialR.drawable.abc_ic_clear_material)

app/src/main/java/org/koitharu/kotatsu/core/AppModule.kt

@@ -23,6 +23,7 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.flow.SharedFlow
 import kotlinx.coroutines.flow.asSharedFlow
+import okhttp3.Cache
 import okhttp3.CookieJar
 import okhttp3.OkHttpClient
 import org.koitharu.kotatsu.BuildConfig
@@ -88,14 +89,19 @@ interface AppModule {
 
 		@Provides
 		@Singleton
-		fun provideOkHttpClient(
+		fun provideHttpCache(
 			localStorageManager: LocalStorageManager,
+		): Cache = localStorageManager.createHttpCache()
+
+		@Provides
+		@Singleton
+		fun provideOkHttpClient(
+			cache: Cache,
 			commonHeadersInterceptor: CommonHeadersInterceptor,
 			mirrorSwitchInterceptor: MirrorSwitchInterceptor,
 			cookieJar: CookieJar,
 			settings: AppSettings,
 		): OkHttpClient {
-			val cache = localStorageManager.createHttpCache()
 			return OkHttpClient.Builder().apply {
 				connectTimeout(20, TimeUnit.SECONDS)
 				readTimeout(60, TimeUnit.SECONDS)
@@ -106,6 +112,7 @@ interface AppModule {
 					bypassSSLErrors()
 				}
 				cache(cache)
+				addNetworkInterceptor(CacheLimitInterceptor())
 				addInterceptor(GZipInterceptor())
 				addInterceptor(commonHeadersInterceptor)
 				addInterceptor(CloudFlareInterceptor())

app/src/main/java/org/koitharu/kotatsu/core/cache/DeferredLruCache.kt

@@ -1,5 +0,0 @@
-package org.koitharu.kotatsu.core.cache
-
-import androidx.collection.LruCache
-
-class DeferredLruCache<T>(maxSize: Int) : LruCache<ContentCache.Key, SafeDeferred<T>>(maxSize)

app/src/main/java/org/koitharu/kotatsu/core/cache/ExpiringLruCache.kt

@@ -0,0 +1,33 @@
+package org.koitharu.kotatsu.core.cache
+
+import androidx.collection.LruCache
+import java.util.concurrent.TimeUnit
+
+class ExpiringLruCache<T>(
+	val maxSize: Int,
+	private val lifetime: Long,
+	private val timeUnit: TimeUnit,
+) {
+
+	private val cache = LruCache<ContentCache.Key, ExpiringValue<T>>(maxSize)
+
+	operator fun get(key: ContentCache.Key): T? {
+		val value = cache.get(key) ?: return null
+		if (value.isExpired) {
+			cache.remove(key)
+		}
+		return value.get()
+	}
+
+	operator fun set(key: ContentCache.Key, value: T) {
+		cache.put(key, ExpiringValue(value, lifetime, timeUnit))
+	}
+
+	fun clear() {
+		cache.evictAll()
+	}
+
+	fun trimToSize(size: Int) {
+		cache.trimToSize(size)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/core/cache/ExpiringValue.kt

@@ -0,0 +1,34 @@
+package org.koitharu.kotatsu.core.cache
+
+import android.os.SystemClock
+import java.util.concurrent.TimeUnit
+
+class ExpiringValue<T>(
+	private val value: T,
+	lifetime: Long,
+	timeUnit: TimeUnit,
+) {
+
+	private val expiresAt = SystemClock.elapsedRealtime() + timeUnit.toMillis(lifetime)
+
+	val isExpired: Boolean
+		get() = SystemClock.elapsedRealtime() >= expiresAt
+
+	fun get(): T? = if (isExpired) null else value
+
+	override fun equals(other: Any?): Boolean {
+		if (this === other) return true
+		if (javaClass != other?.javaClass) return false
+
+		other as ExpiringValue<*>
+
+		if (value != other.value) return false
+		return expiresAt == other.expiresAt
+	}
+
+	override fun hashCode(): Int {
+		var result = value?.hashCode() ?: 0
+		result = 31 * result + expiresAt.hashCode()
+		return result
+	}
+}

app/src/main/java/org/koitharu/kotatsu/core/cache/MemoryContentCache.kt

@@ -6,6 +6,7 @@ import android.content.res.Configuration
 import org.koitharu.kotatsu.parsers.model.Manga
 import org.koitharu.kotatsu.parsers.model.MangaPage
 import org.koitharu.kotatsu.parsers.model.MangaSource
+import java.util.concurrent.TimeUnit
 
 class MemoryContentCache(application: Application) : ContentCache, ComponentCallbacks2 {
 
@@ -13,8 +14,8 @@ class MemoryContentCache(application: Application) : ContentCache, ComponentCall
 		application.registerComponentCallbacks(this)
 	}
 
-	private val detailsCache = DeferredLruCache<Manga>(4)
-	private val pagesCache = DeferredLruCache<List<MangaPage>>(4)
+	private val detailsCache = ExpiringLruCache<SafeDeferred<Manga>>(4, 5, TimeUnit.MINUTES)
+	private val pagesCache = ExpiringLruCache<SafeDeferred<List<MangaPage>>>(4, 10, TimeUnit.MINUTES)
 
 	override val isCachingEnabled: Boolean = true
 
@@ -23,7 +24,7 @@ class MemoryContentCache(application: Application) : ContentCache, ComponentCall
 	}
 
 	override fun putDetails(source: MangaSource, url: String, details: SafeDeferred<Manga>) {
-		detailsCache.put(ContentCache.Key(source, url), details)
+		detailsCache[ContentCache.Key(source, url)] = details
 	}
 
 	override suspend fun getPages(source: MangaSource, url: String): List<MangaPage>? {
@@ -31,7 +32,7 @@ class MemoryContentCache(application: Application) : ContentCache, ComponentCall
 	}
 
 	override fun putPages(source: MangaSource, url: String, pages: SafeDeferred<List<MangaPage>>) {
-		pagesCache.put(ContentCache.Key(source, url), pages)
+		pagesCache[ContentCache.Key(source, url)] = pages
 	}
 
 	override fun onConfigurationChanged(newConfig: Configuration) = Unit
@@ -43,17 +44,17 @@ class MemoryContentCache(application: Application) : ContentCache, ComponentCall
 		trimCache(pagesCache, level)
 	}
 
-	private fun trimCache(cache: DeferredLruCache<*>, level: Int) {
+	private fun trimCache(cache: ExpiringLruCache<*>, level: Int) {
 		when (level) {
 			ComponentCallbacks2.TRIM_MEMORY_RUNNING_CRITICAL,
 			ComponentCallbacks2.TRIM_MEMORY_COMPLETE,
-			ComponentCallbacks2.TRIM_MEMORY_MODERATE -> cache.evictAll()
+			ComponentCallbacks2.TRIM_MEMORY_MODERATE -> cache.clear()
 
 			ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN,
 			ComponentCallbacks2.TRIM_MEMORY_RUNNING_LOW,
 			ComponentCallbacks2.TRIM_MEMORY_BACKGROUND -> cache.trimToSize(1)
 
-			else -> cache.trimToSize(cache.maxSize() / 2)
+			else -> cache.trimToSize(cache.maxSize / 2)
 		}
 	}
 }

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

@@ -1,7 +1,10 @@
 package org.koitharu.kotatsu.core.db.entity
 
 import org.koitharu.kotatsu.core.model.MangaSource
-import org.koitharu.kotatsu.parsers.model.*
+import org.koitharu.kotatsu.parsers.model.Manga
+import org.koitharu.kotatsu.parsers.model.MangaState
+import org.koitharu.kotatsu.parsers.model.MangaTag
+import org.koitharu.kotatsu.parsers.model.SortOrder
 import org.koitharu.kotatsu.parsers.util.mapToSet
 import org.koitharu.kotatsu.parsers.util.toTitleCase
 import org.koitharu.kotatsu.utils.ext.longHashCode
@@ -66,7 +69,6 @@ fun SortOrder(name: String, fallback: SortOrder): SortOrder = runCatching {
 	SortOrder.valueOf(name)
 }.getOrDefault(fallback)
 
-@Suppress("FunctionName")
 fun MangaState(name: String): MangaState? = runCatching {
 	MangaState.valueOf(name)
 }.getOrNull()

app/src/main/java/org/koitharu/kotatsu/core/logs/FileLogger.kt

@@ -4,12 +4,15 @@ import android.content.Context
 import androidx.annotation.WorkerThread
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
+import kotlinx.coroutines.NonCancellable
 import kotlinx.coroutines.cancelAndJoin
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.runBlocking
 import kotlinx.coroutines.runInterruptible
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
+import kotlinx.coroutines.withContext
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.utils.ext.printStackTraceDebug
 import org.koitharu.kotatsu.utils.ext.processLifecycleScope
@@ -82,6 +85,15 @@ class FileLogger(
 		flushImpl()
 	}
 
+	@WorkerThread
+	fun flushBlocking() {
+		if (!isEnabled) {
+			return
+		}
+		runBlockingSafe { flushJob?.cancelAndJoin() }
+		runBlockingSafe { flushImpl() }
+	}
+
 	private fun postFlush() {
 		if (flushJob?.isActive == true) {
 			return
@@ -96,10 +108,10 @@ class FileLogger(
 		}
 	}
 
-	private suspend fun flushImpl() {
+	private suspend fun flushImpl() = withContext(NonCancellable) {
 		mutex.withLock {
 			if (buffer.isEmpty()) {
-				return
+				return@withContext
 			}
 			runInterruptible(Dispatchers.IO) {
 				if (file.length() > MAX_SIZE_BYTES) {
@@ -131,4 +143,9 @@ class FileLogger(
 		}
 		bakFile.delete()
 	}
+
+	private inline fun runBlockingSafe(crossinline block: suspend () -> Unit) = try {
+		runBlocking(NonCancellable) { block() }
+	} catch (_: InterruptedException) {
+	}
 }

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

@@ -3,12 +3,14 @@ package org.koitharu.kotatsu.core.model
 import androidx.core.os.LocaleListCompat
 import org.koitharu.kotatsu.details.ui.model.ChapterListItem
 import org.koitharu.kotatsu.parsers.model.Manga
+import org.koitharu.kotatsu.parsers.model.MangaChapter
 import org.koitharu.kotatsu.parsers.util.mapToSet
-import org.koitharu.kotatsu.parsers.util.toTitleCase
 import org.koitharu.kotatsu.utils.ext.iterator
 
 fun Collection<Manga>.ids() = mapToSet { it.id }
 
+fun Collection<Manga>.distinctById() = distinctBy { it.id }
+
 fun Collection<ChapterListItem>.countChaptersByBranch(): Int {
 	if (size <= 1) {
 		return size
@@ -33,15 +35,22 @@ fun Manga.getPreferredBranch(history: MangaHistory?): String? {
 		}
 	}
 	val groups = ch.groupBy { it.branch }
+	if (groups.size == 1) {
+		return groups.keys.first()
+	}
+	val candidates = HashMap<String?, List<MangaChapter>>(groups.size)
 	for (locale in LocaleListCompat.getAdjustedDefault()) {
-		var language = locale.getDisplayLanguage(locale).toTitleCase(locale)
-		if (groups.containsKey(language)) {
-			return language
-		}
-		language = locale.getDisplayName(locale).toTitleCase(locale)
-		if (groups.containsKey(language)) {
-			return language
+		val displayLanguage = locale.getDisplayLanguage(locale)
+		val displayName = locale.getDisplayName(locale)
+		for (branch in groups.keys) {
+			if (branch != null && (
+					branch.contains(displayLanguage, ignoreCase = true) ||
+						branch.contains(displayName, ignoreCase = true)
+					)
+			) {
+				candidates[branch] = groups[branch] ?: continue
+			}
 		}
 	}
-	return groups.maxByOrNull { it.value.size }?.key
+	return candidates.ifEmpty { groups }.maxByOrNull { it.value.size }?.key
 }

app/src/main/java/org/koitharu/kotatsu/core/network/CacheLimitInterceptor.kt

@@ -0,0 +1,26 @@
+package org.koitharu.kotatsu.core.network
+
+import okhttp3.CacheControl
+import okhttp3.Interceptor
+import okhttp3.Response
+import java.util.concurrent.TimeUnit
+
+class CacheLimitInterceptor : Interceptor {
+
+	private val defaultMaxAge = TimeUnit.HOURS.toSeconds(1)
+	private val defaultCacheControl = CacheControl.Builder()
+		.maxAge(defaultMaxAge.toInt(), TimeUnit.SECONDS)
+		.build()
+		.toString()
+
+	override fun intercept(chain: Interceptor.Chain): Response {
+		val response = chain.proceed(chain.request())
+		val responseCacheControl = CacheControl.parse(response.headers)
+		if (responseCacheControl.noStore || responseCacheControl.maxAgeSeconds <= defaultMaxAge) {
+			return response
+		}
+		return response.newBuilder()
+			.header(CommonHeaders.CACHE_CONTROL, defaultCacheControl)
+			.build()
+	}
+}

app/src/main/java/org/koitharu/kotatsu/core/network/CommonHeaders.kt

@@ -13,6 +13,7 @@ object CommonHeaders {
 	const val CONTENT_ENCODING = "Content-Encoding"
 	const val ACCEPT_ENCODING = "Accept-Encoding"
 	const val AUTHORIZATION = "Authorization"
+	const val CACHE_CONTROL = "Cache-Control"
 
 	val CACHE_CONTROL_NO_STORE: CacheControl
 		get() = CacheControl.Builder().noStore().build()

app/src/main/java/org/koitharu/kotatsu/core/network/CommonHeadersInterceptor.kt

@@ -13,6 +13,7 @@ import org.koitharu.kotatsu.core.parser.RemoteMangaRepository
 import org.koitharu.kotatsu.parsers.model.MangaSource
 import org.koitharu.kotatsu.parsers.util.mergeWith
 import org.koitharu.kotatsu.utils.ext.printStackTraceDebug
+import java.net.IDN
 import java.util.Locale
 import javax.inject.Inject
 import javax.inject.Singleton
@@ -41,7 +42,8 @@ class CommonHeadersInterceptor @Inject constructor(
 			headersBuilder[CommonHeaders.USER_AGENT] = userAgentFallback
 		}
 		if (headersBuilder[CommonHeaders.REFERER] == null && repository != null) {
-			headersBuilder.trySet(CommonHeaders.REFERER, "https://${repository.domain}/")
+			val idn = IDN.toASCII(repository.domain)
+			headersBuilder.trySet(CommonHeaders.REFERER, "https://$idn/")
 		}
 		val newRequest = request.newBuilder().headers(headersBuilder.build()).build()
 		return repository?.intercept(ProxyChain(chain, newRequest)) ?: chain.proceed(newRequest)

app/src/main/java/org/koitharu/kotatsu/core/network/MirrorSwitchInterceptor.kt

@@ -11,6 +11,7 @@ import okhttp3.internal.closeQuietly
 import okhttp3.internal.publicsuffix.PublicSuffixDatabase
 import org.koitharu.kotatsu.core.parser.MangaRepository
 import org.koitharu.kotatsu.core.parser.RemoteMangaRepository
+import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.parsers.model.MangaSource
 import javax.inject.Inject
 import javax.inject.Singleton
@@ -18,10 +19,14 @@ import javax.inject.Singleton
 @Singleton
 class MirrorSwitchInterceptor @Inject constructor(
 	private val mangaRepositoryFactoryLazy: Lazy<MangaRepository.Factory>,
+	private val settings: AppSettings,
 ) : Interceptor {
 
 	override fun intercept(chain: Interceptor.Chain): Response {
 		val request = chain.request()
+		if (!settings.isMirrorSwitchingAvailable) {
+			return chain.proceed(request)
+		}
 		return try {
 			val response = chain.proceed(request)
 			if (response.isFailed) {

app/src/main/java/org/koitharu/kotatsu/core/os/ShortcutsUpdater.kt

@@ -11,6 +11,7 @@ import androidx.annotation.VisibleForTesting
 import androidx.core.content.pm.ShortcutInfoCompat
 import androidx.core.content.pm.ShortcutManagerCompat
 import androidx.core.graphics.drawable.IconCompat
+import androidx.core.graphics.drawable.toBitmap
 import androidx.room.InvalidationTracker
 import coil.ImageLoader
 import coil.request.ImageRequest
@@ -27,9 +28,9 @@ import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.history.domain.HistoryRepository
 import org.koitharu.kotatsu.parsers.model.Manga
 import org.koitharu.kotatsu.reader.ui.ReaderActivity
+import org.koitharu.kotatsu.utils.ext.getDrawableOrThrow
 import org.koitharu.kotatsu.utils.ext.printStackTraceDebug
 import org.koitharu.kotatsu.utils.ext.processLifecycleScope
-import org.koitharu.kotatsu.utils.ext.requireBitmap
 import org.koitharu.kotatsu.utils.ext.runCatchingCancellable
 import javax.inject.Inject
 import javax.inject.Singleton
@@ -92,6 +93,14 @@ class ShortcutsUpdater @Inject constructor(
 		return manager.maxShortcutCountPerActivity > 0
 	}
 
+	fun notifyMangaOpened(mangaId: Long) {
+		if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N_MR1) {
+			return
+		}
+		val manager = context.getSystemService(Context.SHORTCUT_SERVICE) as ShortcutManager
+		manager.reportShortcutUsed(mangaId.toString())
+	}
+
 	@RequiresApi(Build.VERSION_CODES.N_MR1)
 	private suspend fun updateShortcutsImpl() = runCatchingCancellable {
 		val manager = context.getSystemService(Context.SHORTCUT_SERVICE) as ShortcutManager
@@ -122,7 +131,7 @@ class ShortcutsUpdater @Inject constructor(
 					.precision(Precision.EXACT)
 					.scale(Scale.FILL)
 					.build(),
-			).requireBitmap()
+			).getDrawableOrThrow().toBitmap()
 		}.fold(
 			onSuccess = { IconCompat.createWithAdaptiveBitmap(it) },
 			onFailure = { IconCompat.createWithResource(context, R.drawable.ic_shortcut_default) },

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

@@ -19,10 +19,13 @@ import okhttp3.Request
 import okhttp3.Response
 import okhttp3.ResponseBody
 import okhttp3.internal.closeQuietly
+import okio.Closeable
+import okio.buffer
 import org.koitharu.kotatsu.core.model.MangaSource
 import org.koitharu.kotatsu.core.parser.MangaRepository
 import org.koitharu.kotatsu.core.parser.RemoteMangaRepository
 import org.koitharu.kotatsu.local.data.CacheDir
+import org.koitharu.kotatsu.local.data.util.withExtraCloseable
 import org.koitharu.kotatsu.parsers.model.MangaSource
 import org.koitharu.kotatsu.parsers.util.await
 import java.net.HttpURLConnection
@@ -54,7 +57,9 @@ class FaviconFetcher(
 		val icon = checkNotNull(favicons.find(sizePx)) { "No favicons found" }
 		val response = loadIcon(icon.url, mangaSource)
 		val responseBody = response.requireBody()
-		val source = writeToDiskCache(responseBody)?.toImageSource() ?: responseBody.toImageSource()
+		val source = writeToDiskCache(responseBody)?.toImageSource()?.also {
+			response.closeQuietly()
+		} ?: responseBody.toImageSource(response)
 		return SourceResult(
 			source = source,
 			mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(icon.type),
@@ -71,7 +76,7 @@ class FaviconFetcher(
 		options.tags.asMap().forEach { request.tag(it.key as Class<Any>, it.value) }
 		val response = okHttpClient.newCall(request.build()).await()
 		if (!response.isSuccessful && response.code != HttpURLConnection.HTTP_NOT_MODIFIED) {
-			response.body?.closeQuietly()
+			response.closeQuietly()
 			throw HttpException(response)
 		}
 		return response
@@ -116,8 +121,12 @@ class FaviconFetcher(
 		return ImageSource(data, fileSystem, diskCacheKey, this)
 	}
 
-	private fun ResponseBody.toImageSource(): ImageSource {
-		return ImageSource(source(), options.context, FaviconMetadata(mangaSource))
+	private fun ResponseBody.toImageSource(response: Closeable): ImageSource {
+		return ImageSource(
+			source().withExtraCloseable(response).buffer(),
+			options.context,
+			FaviconMetadata(mangaSource),
+		)
 	}
 
 	private fun Response.toDataSource(): DataSource {

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

@@ -16,6 +16,7 @@ import org.koitharu.kotatsu.core.model.ZoomMode
 import org.koitharu.kotatsu.core.network.DoHProvider
 import org.koitharu.kotatsu.parsers.model.MangaSource
 import org.koitharu.kotatsu.parsers.model.SortOrder
+import org.koitharu.kotatsu.parsers.util.mapToSet
 import org.koitharu.kotatsu.shelf.domain.ShelfSection
 import org.koitharu.kotatsu.utils.ext.connectivityManager
 import org.koitharu.kotatsu.utils.ext.filterToSet
@@ -165,6 +166,9 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 		get() = prefs.getBoolean(KEY_PROTECT_APP_BIOMETRIC, true)
 		set(value) = prefs.edit { putBoolean(KEY_PROTECT_APP_BIOMETRIC, value) }
 
+	val isMirrorSwitchingAvailable: Boolean
+		get() = prefs.getBoolean(KEY_MIRROR_SWITCHING, true)
+
 	val isExitConfirmationEnabled: Boolean
 		get() = prefs.getBoolean(KEY_EXIT_CONFIRM, false)
 
@@ -238,15 +242,28 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 	val isDownloadsSlowdownEnabled: Boolean
 		get() = prefs.getBoolean(KEY_DOWNLOADS_SLOWDOWN, false)
 
-	val downloadsParallelism: Int
-		get() = prefs.getInt(KEY_DOWNLOADS_PARALLELISM, 2)
+	val isDownloadsWiFiOnly: Boolean
+		get() = prefs.getBoolean(KEY_DOWNLOADS_WIFI, false)
 
-	val isSuggestionsEnabled: Boolean
+	var isSuggestionsEnabled: Boolean
 		get() = prefs.getBoolean(KEY_SUGGESTIONS, false)
+		set(value) = prefs.edit { putBoolean(KEY_SUGGESTIONS, value) }
 
 	val isSuggestionsExcludeNsfw: Boolean
 		get() = prefs.getBoolean(KEY_SUGGESTIONS_EXCLUDE_NSFW, false)
 
+	val isSuggestionsNotificationAvailable: Boolean
+		get() = prefs.getBoolean(KEY_SUGGESTIONS_NOTIFICATIONS, true)
+
+	val suggestionsTagsBlacklist: Set<String>
+		get() {
+			val string = prefs.getString(KEY_SUGGESTIONS_EXCLUDE_TAGS, null)?.trimEnd(' ', ',')
+			if (string.isNullOrEmpty()) {
+				return emptySet()
+			}
+			return string.split(',').mapToSet { it.trim() }
+		}
+
 	val isReaderBarEnabled: Boolean
 		get() = prefs.getBoolean(KEY_READER_BAR, true)
 
@@ -276,18 +293,6 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 		return policy.isNetworkAllowed(connectivityManager)
 	}
 
-	fun getSuggestionsTagsBlacklistRegex(): Regex? {
-		val string = prefs.getString(KEY_SUGGESTIONS_EXCLUDE_TAGS, null)?.trimEnd(' ', ',')
-		if (string.isNullOrEmpty()) {
-			return null
-		}
-		val tags = string.split(',')
-		val regex = tags.joinToString(prefix = "(", separator = "|", postfix = ")") { tag ->
-			Regex.escape(tag.trim())
-		}
-		return Regex(regex, RegexOption.IGNORE_CASE)
-	}
-
 	fun getMangaSources(includeHidden: Boolean): List<MangaSource> {
 		val list = remoteSources.toMutableList()
 		val order = sourcesOrder
@@ -340,6 +345,7 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 		const val KEY_SOURCES_HIDDEN = "sources_hidden"
 		const val KEY_TRAFFIC_WARNING = "traffic_warning"
 		const val KEY_PAGES_CACHE_CLEAR = "pages_cache_clear"
+		const val KEY_HTTP_CACHE_CLEAR = "http_cache_clear"
 		const val KEY_COOKIES_CLEAR = "cookies_clear"
 		const val KEY_THUMBS_CACHE_CLEAR = "thumbs_cache_clear"
 		const val KEY_SEARCH_HISTORY_CLEAR = "search_history_clear"
@@ -378,16 +384,18 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 		const val KEY_SUGGESTIONS = "suggestions"
 		const val KEY_SUGGESTIONS_EXCLUDE_NSFW = "suggestions_exclude_nsfw"
 		const val KEY_SUGGESTIONS_EXCLUDE_TAGS = "suggestions_exclude_tags"
+		const val KEY_SUGGESTIONS_NOTIFICATIONS = "suggestions_notifications"
 		const val KEY_SHIKIMORI = "shikimori"
 		const val KEY_ANILIST = "anilist"
 		const val KEY_MAL = "mal"
-		const val KEY_DOWNLOADS_PARALLELISM = "downloads_parallelism"
 		const val KEY_DOWNLOADS_SLOWDOWN = "downloads_slowdown"
+		const val KEY_DOWNLOADS_WIFI = "downloads_wifi"
 		const val KEY_ALL_FAVOURITES_VISIBLE = "all_favourites_visible"
 		const val KEY_DOH = "doh"
 		const val KEY_EXIT_CONFIRM = "exit_confirm"
 		const val KEY_INCOGNITO_MODE = "incognito"
 		const val KEY_SYNC = "sync"
+		const val KEY_SYNC_SETTINGS = "sync_settings"
 		const val KEY_READER_BAR = "reader_bar"
 		const val KEY_READER_SLIDER = "reader_slider"
 		const val KEY_SHORTCUTS = "dynamic_shortcuts"
@@ -404,6 +412,7 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 		const val KEY_TIPS_CLOSED = "tips_closed"
 		const val KEY_SSL_BYPASS = "ssl_bypass"
 		const val KEY_READER_AUTOSCROLL_SPEED = "as_speed"
+		const val KEY_MIRROR_SWITCHING = "mirror_switching"
 
 		// About
 		const val KEY_APP_UPDATE = "app_update"

app/src/main/java/org/koitharu/kotatsu/details/domain/BranchComparator.kt

@@ -1,6 +1,8 @@
 package org.koitharu.kotatsu.details.domain
 
-class BranchComparator : Comparator<String?> {
+import org.koitharu.kotatsu.details.ui.model.MangaBranch
 
-	override fun compare(o1: String?, o2: String?): Int = compareValues(o1, o2)
-}
+class BranchComparator : Comparator<MangaBranch> {
+
+	override fun compare(o1: MangaBranch, o2: MangaBranch): Int = compareValues(o1.name, o2.name)
+}

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

@@ -19,7 +19,6 @@ import org.koitharu.kotatsu.databinding.FragmentChaptersBinding
 import org.koitharu.kotatsu.details.ui.adapter.ChaptersAdapter
 import org.koitharu.kotatsu.details.ui.adapter.ChaptersSelectionDecoration
 import org.koitharu.kotatsu.details.ui.model.ChapterListItem
-import org.koitharu.kotatsu.download.ui.service.DownloadService
 import org.koitharu.kotatsu.local.ui.LocalChaptersRemoveService
 import org.koitharu.kotatsu.parsers.model.MangaSource
 import org.koitharu.kotatsu.reader.ui.ReaderActivity
@@ -95,11 +94,7 @@ class ChaptersFragment :
 	override fun onActionItemClicked(controller: ListSelectionController, mode: ActionMode, item: MenuItem): Boolean {
 		return when (item.itemId) {
 			R.id.action_save -> {
-				DownloadService.start(
-					binding.recyclerViewChapters,
-					viewModel.getRemoteManga() ?: viewModel.manga.value ?: return false,
-					selectionController?.snapshot(),
-				)
+				viewModel.download(selectionController?.snapshot())
 				mode.finish()
 				true
 			}

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

@@ -1,12 +1,13 @@
 package org.koitharu.kotatsu.details.ui
 
 import android.content.Context
+import android.content.DialogInterface
 import android.content.Intent
 import android.os.Bundle
 import android.transition.Slide
 import android.transition.TransitionManager
 import android.view.Gravity
-import android.view.Menu
+import android.view.MenuItem
 import android.view.View
 import android.view.ViewGroup
 import android.view.animation.AccelerateDecelerateInterpolator
@@ -18,30 +19,31 @@ import androidx.core.view.isGone
 import androidx.core.view.isVisible
 import androidx.core.view.updatePadding
 import androidx.lifecycle.Observer
-import androidx.lifecycle.lifecycleScope
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.google.android.material.snackbar.BaseTransientBottomBar
 import com.google.android.material.snackbar.Snackbar
 import dagger.hilt.android.AndroidEntryPoint
-import kotlinx.coroutines.launch
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.base.domain.MangaIntent
 import org.koitharu.kotatsu.base.ui.BaseActivity
+import org.koitharu.kotatsu.base.ui.dialog.RecyclerViewAlertDialog
+import org.koitharu.kotatsu.base.ui.list.OnListItemClickListener
 import org.koitharu.kotatsu.base.ui.widgets.BottomSheetHeaderBar
 import org.koitharu.kotatsu.core.exceptions.resolve.SnackbarErrorObserver
 import org.koitharu.kotatsu.core.model.parcelable.ParcelableManga
 import org.koitharu.kotatsu.core.os.ShortcutsUpdater
 import org.koitharu.kotatsu.databinding.ActivityDetailsBinding
 import org.koitharu.kotatsu.details.service.MangaPrefetchService
+import org.koitharu.kotatsu.details.ui.adapter.branchAD
 import org.koitharu.kotatsu.details.ui.model.ChapterListItem
 import org.koitharu.kotatsu.details.ui.model.HistoryInfo
-import org.koitharu.kotatsu.download.ui.service.DownloadService
+import org.koitharu.kotatsu.details.ui.model.MangaBranch
+import org.koitharu.kotatsu.download.ui.worker.DownloadStartedObserver
 import org.koitharu.kotatsu.main.ui.owners.NoModalBottomSheetOwner
 import org.koitharu.kotatsu.parsers.model.Manga
 import org.koitharu.kotatsu.reader.ui.ReaderActivity
 import org.koitharu.kotatsu.reader.ui.ReaderState
 import org.koitharu.kotatsu.utils.ViewBadge
-import org.koitharu.kotatsu.utils.ext.getDisplayMessage
 import org.koitharu.kotatsu.utils.ext.setNavigationBarTransparentCompat
 import org.koitharu.kotatsu.utils.ext.textAndVisible
 import javax.inject.Inject
@@ -51,7 +53,9 @@ class DetailsActivity :
 	BaseActivity<ActivityDetailsBinding>(),
 	View.OnClickListener,
 	BottomSheetHeaderBar.OnExpansionChangeListener,
-	NoModalBottomSheetOwner {
+	NoModalBottomSheetOwner,
+	View.OnLongClickListener,
+	PopupMenu.OnMenuItemClickListener {
 
 	override val bsHeader: BottomSheetHeaderBar?
 		get() = binding.headerChapters
@@ -72,6 +76,7 @@ class DetailsActivity :
 			setDisplayShowTitleEnabled(false)
 		}
 		binding.buttonRead.setOnClickListener(this)
+		binding.buttonRead.setOnLongClickListener(this)
 		binding.buttonDropdown.setOnClickListener(this)
 		viewBadge = ViewBadge(binding.buttonRead, this)
 
@@ -120,6 +125,7 @@ class DetailsActivity :
 			binding.buttonDropdown.isVisible = it.size > 1
 		}
 		viewModel.chapters.observe(this, PrefetchObserver(this))
+		viewModel.onDownloadStarted.observe(this, DownloadStartedObserver(binding.containerDetails))
 
 		addMenuProvider(
 			DetailsMenuProvider(
@@ -133,27 +139,34 @@ class DetailsActivity :
 	}
 
 	override fun onClick(v: View) {
-		val manga = viewModel.manga.value ?: return
 		when (v.id) {
-			R.id.button_read -> {
-				val chapterId = viewModel.historyInfo.value?.history?.chapterId
-				if (chapterId != null && manga.chapters?.none { x -> x.id == chapterId } == true) {
-					showChapterMissingDialog(chapterId)
-				} else {
-					startActivity(
-						ReaderActivity.newIntent(
-							context = this,
-							manga = manga,
-							branch = viewModel.selectedBranchValue,
-						),
-					)
-				}
-			}
-
+			R.id.button_read -> openReader(isIncognitoMode = false)
 			R.id.button_dropdown -> showBranchPopupMenu()
 		}
 	}
 
+	override fun onLongClick(v: View): Boolean = when (v.id) {
+		R.id.button_read -> {
+			val menu = PopupMenu(v.context, v)
+			menu.inflate(R.menu.popup_read)
+			menu.setOnMenuItemClickListener(this)
+			menu.setForceShowIcon(true)
+			menu.show()
+			true
+		}
+
+		else -> false
+	}
+
+	override fun onMenuItemClick(item: MenuItem): Boolean = when (item.itemId) {
+		R.id.action_incognito -> {
+			openReader(isIncognitoMode = true)
+			true
+		}
+
+		else -> false
+	}
+
 	override fun onExpansionStateChanged(headerBar: BottomSheetHeaderBar, isExpanded: Boolean) {
 		if (isExpanded) {
 			headerBar.addMenuProvider(chaptersMenuProvider)
@@ -236,34 +249,44 @@ class DetailsActivity :
 				)
 			}
 			setNeutralButton(R.string.download) { _, _ ->
-				DownloadService.start(binding.appbar, remoteManga, setOf(chapterId))
+				viewModel.download(setOf(chapterId))
 			}
 			setCancelable(true)
 		}.show()
 	}
 
 	private fun showBranchPopupMenu() {
-		val menu = PopupMenu(this, binding.headerChapters ?: binding.buttonDropdown)
-		val currentBranch = viewModel.selectedBranchValue
-		for (branch in viewModel.branches.value ?: return) {
-			val item = menu.menu.add(R.id.group_branches, Menu.NONE, Menu.NONE, branch)
-			item.isChecked = branch == currentBranch
+		var dialog: DialogInterface? = null
+		val listener = OnListItemClickListener<MangaBranch> { item, _ ->
+			viewModel.setSelectedBranch(item.name)
+			dialog?.dismiss()
 		}
-		menu.menu.setGroupCheckable(R.id.group_branches, true, true)
-		menu.setOnMenuItemClickListener { item ->
-			viewModel.setSelectedBranch(item.title?.toString())
-			true
-		}
-		menu.show()
+		dialog = RecyclerViewAlertDialog.Builder<MangaBranch>(this)
+			.addAdapterDelegate(branchAD(listener))
+			.setCancelable(true)
+			.setNegativeButton(android.R.string.cancel, null)
+			.setTitle(R.string.translations)
+			.setItems(viewModel.branches.value.orEmpty())
+			.create()
+			.also { it.show() }
 	}
 
-	private fun resolveError(e: Throwable) {
-		lifecycleScope.launch {
-			if (exceptionResolver.resolve(e)) {
-				viewModel.reload()
-			} else if (viewModel.manga.value == null) {
-				Toast.makeText(this@DetailsActivity, e.getDisplayMessage(resources), Toast.LENGTH_LONG).show()
-				finishAfterTransition()
+	private fun openReader(isIncognitoMode: Boolean) {
+		val manga = viewModel.manga.value ?: return
+		val chapterId = viewModel.historyInfo.value?.history?.chapterId
+		if (chapterId != null && manga.chapters?.none { x -> x.id == chapterId } == true) {
+			showChapterMissingDialog(chapterId)
+		} else {
+			startActivity(
+				ReaderActivity.newIntent(
+					context = this,
+					manga = manga,
+					branch = viewModel.selectedBranchValue,
+					isIncognitoMode = isIncognitoMode,
+				),
+			)
+			if (isIncognitoMode) {
+				Toast.makeText(this, R.string.incognito_mode, Toast.LENGTH_SHORT).show()
 			}
 		}
 	}

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

@@ -16,7 +16,7 @@ import kotlinx.coroutines.launch
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.browser.BrowserActivity
 import org.koitharu.kotatsu.core.os.ShortcutsUpdater
-import org.koitharu.kotatsu.download.ui.service.DownloadService
+import org.koitharu.kotatsu.details.ui.model.MangaBranch
 import org.koitharu.kotatsu.favourites.ui.categories.select.FavouriteCategoriesBottomSheet
 import org.koitharu.kotatsu.parsers.model.Manga
 import org.koitharu.kotatsu.parsers.model.MangaSource
@@ -86,7 +86,7 @@ class DetailsMenuProvider(
 					if (chaptersCount > 5 || branches.size > 1) {
 						showSaveConfirmation(it, chaptersCount, branches)
 					} else {
-						DownloadService.start(snackbarHost, it)
+						viewModel.download(null)
 					}
 				}
 			}
@@ -125,22 +125,24 @@ class DetailsMenuProvider(
 		return true
 	}
 
-	private fun showSaveConfirmation(manga: Manga, chaptersCount: Int, branches: List<String?>) {
+	private fun showSaveConfirmation(manga: Manga, chaptersCount: Int, branches: List<MangaBranch>) {
 		val dialogBuilder = MaterialAlertDialogBuilder(activity)
 			.setTitle(R.string.save_manga)
 			.setNegativeButton(android.R.string.cancel, null)
 		if (branches.size > 1) {
-			val items = Array(branches.size) { i -> branches[i].orEmpty() }
-			val currentBranch = viewModel.selectedBranchIndex.value ?: -1
+			val items = Array(branches.size) { i -> branches[i].name.orEmpty() }
+			val currentBranch = branches.indexOfFirst { it.isSelected }
 			val checkedIndices = BooleanArray(branches.size) { i -> i == currentBranch }
 			dialogBuilder.setMultiChoiceItems(items, checkedIndices) { _, i, checked ->
 				checkedIndices[i] = checked
 			}.setPositiveButton(R.string.save) { _, _ ->
-				val selectedBranches = branches.filterIndexedTo(HashSet()) { i, _ -> checkedIndices[i] }
+				val selectedBranches = branches.mapIndexedNotNullTo(HashSet()) { i, b ->
+					if (checkedIndices[i]) b.name else null
+				}
 				val chaptersIds = manga.chapters?.mapNotNullToSet { c ->
 					if (c.branch in selectedBranches) c.id else null
 				}
-				DownloadService.start(snackbarHost, manga, chaptersIds)
+				viewModel.download(chaptersIds)
 			}
 		} else {
 			dialogBuilder.setMessage(
@@ -149,7 +151,7 @@ class DetailsMenuProvider(
 					activity.resources.getQuantityString(R.plurals.chapters, chaptersCount, chaptersCount),
 				),
 			).setPositiveButton(R.string.save) { _, _ ->
-				DownloadService.start(snackbarHost, manga)
+				viewModel.download(null)
 			}
 		}
 		dialogBuilder.show()

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

@@ -36,6 +36,8 @@ import org.koitharu.kotatsu.core.prefs.observeAsFlow
 import org.koitharu.kotatsu.details.domain.BranchComparator
 import org.koitharu.kotatsu.details.ui.model.ChapterListItem
 import org.koitharu.kotatsu.details.ui.model.HistoryInfo
+import org.koitharu.kotatsu.details.ui.model.MangaBranch
+import org.koitharu.kotatsu.download.ui.worker.DownloadWorker
 import org.koitharu.kotatsu.favourites.domain.FavouritesRepository
 import org.koitharu.kotatsu.history.domain.HistoryRepository
 import org.koitharu.kotatsu.local.data.LocalManga
@@ -43,7 +45,6 @@ import org.koitharu.kotatsu.local.data.LocalStorageChanges
 import org.koitharu.kotatsu.local.domain.LocalMangaRepository
 import org.koitharu.kotatsu.parsers.model.Manga
 import org.koitharu.kotatsu.parsers.model.MangaSource
-import org.koitharu.kotatsu.parsers.util.mapToSet
 import org.koitharu.kotatsu.scrobbling.common.domain.Scrobbler
 import org.koitharu.kotatsu.scrobbling.common.domain.model.ScrobblingInfo
 import org.koitharu.kotatsu.scrobbling.common.domain.model.ScrobblingStatus
@@ -69,11 +70,13 @@ class DetailsViewModel @Inject constructor(
 	private val imageGetter: Html.ImageGetter,
 	private val delegate: MangaDetailsDelegate,
 	@LocalStorageChanges private val localStorageChanges: SharedFlow<LocalManga?>,
+	private val downloadScheduler: DownloadWorker.Scheduler,
 ) : BaseViewModel() {
 
 	private var loadingJob: Job
 
 	val onShowToast = SingleLiveEvent<Int>()
+	val onDownloadStarted = SingleLiveEvent<Unit>()
 
 	private val history = historyRepository.observeOne(delegate.mangaId)
 		.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, null)
@@ -155,17 +158,15 @@ class DetailsViewModel @Inject constructor(
 		scrobblingInfo.filterNotNull()
 	}.asFlowLiveData(viewModelScope.coroutineContext + Dispatchers.Default, emptyList())
 
-	val branches: LiveData<List<String?>> = delegate.manga.map {
-		val chapters = it?.chapters ?: return@map emptyList()
-		chapters.mapToSet { x -> x.branch }.sortedWith(BranchComparator())
-	}.asFlowLiveData(viewModelScope.coroutineContext + Dispatchers.Default, emptyList())
-
-	val selectedBranchIndex = combine(
-		branches.asFlow(),
+	val branches: LiveData<List<MangaBranch>> = combine(
+		delegate.manga,
 		delegate.selectedBranch,
-	) { branches, selected ->
-		branches.indexOf(selected)
-	}.asFlowLiveData(viewModelScope.coroutineContext + Dispatchers.Default, -1)
+	) { m, b ->
+		val chapters = m?.chapters ?: return@combine emptyList()
+		chapters.groupBy { x -> x.branch }
+			.map { x -> MangaBranch(x.key, x.value.size, x.key == b) }
+			.sortedWith(BranchComparator())
+	}.asFlowLiveData(viewModelScope.coroutineContext + Dispatchers.Default, emptyList())
 
 	val selectedBranchName = delegate.selectedBranch
 		.asFlowLiveData(viewModelScope.coroutineContext, null)
@@ -282,6 +283,16 @@ class DetailsViewModel @Inject constructor(
 		}
 	}
 
+	fun download(chaptersIds: Set<Long>?) {
+		launchJob(Dispatchers.Default) {
+			downloadScheduler.schedule(
+				getRemoteManga() ?: checkNotNull(manga.value),
+				chaptersIds,
+			)
+			onDownloadStarted.emitCall(Unit)
+		}
+	}
+
 	private fun doLoad() = launchLoadingJob(Dispatchers.Default) {
 		delegate.doLoad()
 	}

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

@@ -0,0 +1,39 @@
+package org.koitharu.kotatsu.details.ui.adapter
+
+import android.graphics.Color
+import android.text.Spannable
+import android.text.style.ForegroundColorSpan
+import android.text.style.RelativeSizeSpan
+import androidx.core.text.buildSpannedString
+import com.hannesdorfmann.adapterdelegates4.dsl.adapterDelegateViewBinding
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.base.ui.list.AdapterDelegateClickListenerAdapter
+import org.koitharu.kotatsu.base.ui.list.OnListItemClickListener
+import org.koitharu.kotatsu.databinding.ItemCheckableNewBinding
+import org.koitharu.kotatsu.details.ui.model.MangaBranch
+import org.koitharu.kotatsu.utils.ext.getThemeColor
+
+fun branchAD(
+	clickListener: OnListItemClickListener<MangaBranch>,
+) = adapterDelegateViewBinding<MangaBranch, MangaBranch, ItemCheckableNewBinding>(
+	{ inflater, parent -> ItemCheckableNewBinding.inflate(inflater, parent, false) },
+) {
+
+	val clickAdapter = AdapterDelegateClickListenerAdapter(this, clickListener)
+	itemView.setOnClickListener(clickAdapter)
+	val counterColorSpan = ForegroundColorSpan(context.getThemeColor(android.R.attr.textColorSecondary, Color.LTGRAY))
+	val counterSizeSpan = RelativeSizeSpan(0.86f)
+
+	bind {
+		binding.root.text = buildSpannedString {
+			append(item.name ?: getString(R.string.system_default))
+			append(' ')
+			append(' ')
+			val start = length
+			append(item.count.toString())
+			setSpan(counterColorSpan, start, length, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
+			setSpan(counterSizeSpan, start, length, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
+		}
+		binding.root.isChecked = item.isSelected
+	}
+}

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

@@ -1,45 +1,16 @@
 package org.koitharu.kotatsu.details.ui.adapter
 
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import android.widget.BaseAdapter
-import android.widget.TextView
-import org.koitharu.kotatsu.R
-import org.koitharu.kotatsu.parsers.util.replaceWith
+import com.hannesdorfmann.adapterdelegates4.ListDelegationAdapter
+import org.koitharu.kotatsu.base.ui.list.OnListItemClickListener
+import org.koitharu.kotatsu.details.ui.model.MangaBranch
 
-class BranchesAdapter : BaseAdapter() {
+class BranchesAdapter(
+	list: List<MangaBranch>,
+	listener: OnListItemClickListener<MangaBranch>,
+) : ListDelegationAdapter<List<MangaBranch>>() {
 
-	private val dataSet = ArrayList<String?>()
-
-	override fun getCount(): Int {
-		return dataSet.size
+	init {
+		delegatesManager.addDelegate(branchAD(listener))
+		items = list
 	}
-
-	override fun getItem(position: Int): Any? {
-		return dataSet[position]
-	}
-
-	override fun getItemId(position: Int): Long {
-		return dataSet[position].hashCode().toLong()
-	}
-
-	override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
-		val view = convertView ?: LayoutInflater.from(parent.context)
-			.inflate(R.layout.item_branch, parent, false)
-		(view as TextView).text = dataSet[position]
-		return view
-	}
-
-	override fun getDropDownView(position: Int, convertView: View?, parent: ViewGroup): View {
-		val view = convertView ?: LayoutInflater.from(parent.context)
-			.inflate(R.layout.item_branch_dropdown, parent, false)
-		(view as TextView).text = dataSet[position]
-		return view
-	}
-
-	fun setItems(items: Collection<String?>) {
-		dataSet.replaceWith(items)
-		notifyDataSetChanged()
-	}
-}
+}

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

@@ -0,0 +1,32 @@
+package org.koitharu.kotatsu.details.ui.model
+
+import org.koitharu.kotatsu.list.ui.model.ListModel
+
+class MangaBranch(
+	val name: String?,
+	val count: Int,
+	val isSelected: Boolean,
+) : ListModel {
+
+	override fun equals(other: Any?): Boolean {
+		if (this === other) return true
+		if (javaClass != other?.javaClass) return false
+
+		other as MangaBranch
+
+		if (name != other.name) return false
+		if (count != other.count) return false
+		return isSelected == other.isSelected
+	}
+
+	override fun hashCode(): Int {
+		var result = name.hashCode()
+		result = 31 * result + count
+		result = 31 * result + isSelected.hashCode()
+		return result
+	}
+
+	override fun toString(): String {
+		return "$name: $count"
+	}
+}

app/src/main/java/org/koitharu/kotatsu/download/domain/DownloadManager.kt

@@ -1,281 +0,0 @@
-package org.koitharu.kotatsu.download.domain
-
-import android.app.Service
-import android.content.Context
-import android.webkit.MimeTypeMap
-import androidx.lifecycle.LifecycleService
-import androidx.lifecycle.lifecycleScope
-import coil.ImageLoader
-import coil.request.ImageRequest
-import coil.size.Scale
-import dagger.hilt.android.qualifiers.ApplicationContext
-import dagger.hilt.android.scopes.ServiceScoped
-import kotlinx.coroutines.CancellationException
-import kotlinx.coroutines.CoroutineExceptionHandler
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.NonCancellable
-import kotlinx.coroutines.delay
-import kotlinx.coroutines.flow.MutableSharedFlow
-import kotlinx.coroutines.flow.MutableStateFlow
-import kotlinx.coroutines.launch
-import kotlinx.coroutines.sync.Semaphore
-import kotlinx.coroutines.sync.withPermit
-import kotlinx.coroutines.withContext
-import okhttp3.OkHttpClient
-import okhttp3.Request
-import okhttp3.internal.closeQuietly
-import okio.IOException
-import org.koitharu.kotatsu.R
-import org.koitharu.kotatsu.core.network.CommonHeaders
-import org.koitharu.kotatsu.core.parser.MangaRepository
-import org.koitharu.kotatsu.core.prefs.AppSettings
-import org.koitharu.kotatsu.download.ui.service.PausingHandle
-import org.koitharu.kotatsu.local.data.LocalManga
-import org.koitharu.kotatsu.local.data.LocalStorageChanges
-import org.koitharu.kotatsu.local.data.PagesCache
-import org.koitharu.kotatsu.local.data.input.LocalMangaInput
-import org.koitharu.kotatsu.local.data.output.LocalMangaOutput
-import org.koitharu.kotatsu.local.domain.LocalMangaRepository
-import org.koitharu.kotatsu.parsers.model.Manga
-import org.koitharu.kotatsu.parsers.model.MangaSource
-import org.koitharu.kotatsu.parsers.util.await
-import org.koitharu.kotatsu.utils.ext.copyToSuspending
-import org.koitharu.kotatsu.utils.ext.deleteAwait
-import org.koitharu.kotatsu.utils.ext.ifNullOrEmpty
-import org.koitharu.kotatsu.utils.ext.printStackTraceDebug
-import org.koitharu.kotatsu.utils.ext.runCatchingCancellable
-import org.koitharu.kotatsu.utils.progress.PausingProgressJob
-import java.io.File
-import javax.inject.Inject
-
-private const val MAX_FAILSAFE_ATTEMPTS = 2
-private const val DOWNLOAD_ERROR_DELAY = 500L
-private const val SLOWDOWN_DELAY = 150L
-
-@ServiceScoped
-class DownloadManager @Inject constructor(
-	service: Service,
-	@ApplicationContext private val context: Context,
-	private val imageLoader: ImageLoader,
-	private val okHttp: OkHttpClient,
-	private val cache: PagesCache,
-	private val localMangaRepository: LocalMangaRepository,
-	private val settings: AppSettings,
-	private val mangaRepositoryFactory: MangaRepository.Factory,
-	@LocalStorageChanges private val localStorageChanges: MutableSharedFlow<LocalManga?>,
-) {
-
-	private val coverWidth = context.resources.getDimensionPixelSize(
-		androidx.core.R.dimen.compat_notification_large_icon_max_width,
-	)
-	private val coverHeight = context.resources.getDimensionPixelSize(
-		androidx.core.R.dimen.compat_notification_large_icon_max_height,
-	)
-	private val semaphore = Semaphore(settings.downloadsParallelism)
-	private val coroutineScope = (service as LifecycleService).lifecycleScope
-
-	fun downloadManga(
-		manga: Manga,
-		chaptersIds: LongArray?,
-		startId: Int,
-	): PausingProgressJob<DownloadState> {
-		val stateFlow = MutableStateFlow<DownloadState>(
-			DownloadState.Queued(startId = startId, manga = manga, cover = null),
-		)
-		val pausingHandle = PausingHandle()
-		val job = coroutineScope.launch(Dispatchers.Default + errorStateHandler(stateFlow)) {
-			try {
-				downloadMangaImpl(manga, chaptersIds?.takeUnless { it.isEmpty() }, stateFlow, pausingHandle, startId)
-			} catch (e: CancellationException) { // handle cancellation if not handled already
-				val state = stateFlow.value
-				if (state !is DownloadState.Cancelled) {
-					stateFlow.value = DownloadState.Cancelled(startId, state.manga, state.cover)
-				}
-				throw e
-			}
-		}
-		return PausingProgressJob(job, stateFlow, pausingHandle)
-	}
-
-	private suspend fun downloadMangaImpl(
-		manga: Manga,
-		chaptersIds: LongArray?,
-		outState: MutableStateFlow<DownloadState>,
-		pausingHandle: PausingHandle,
-		startId: Int,
-	) {
-		@Suppress("NAME_SHADOWING")
-		var manga = manga
-		val chaptersIdsSet = chaptersIds?.toMutableSet()
-		val cover = loadCover(manga)
-		outState.value = DownloadState.Queued(startId, manga, cover)
-		withMangaLock(manga) {
-			semaphore.withPermit {
-				outState.value = DownloadState.Preparing(startId, manga, null)
-				val destination = localMangaRepository.getOutputDir(manga)
-				checkNotNull(destination) { context.getString(R.string.cannot_find_available_storage) }
-				val tempFileName = "${manga.id}_$startId.tmp"
-				var output: LocalMangaOutput? = null
-				try {
-					if (manga.source == MangaSource.LOCAL) {
-						manga = localMangaRepository.getRemoteManga(manga)
-							?: error("Cannot obtain remote manga instance")
-					}
-					val repo = mangaRepositoryFactory.create(manga.source)
-					outState.value = DownloadState.Preparing(startId, manga, cover)
-					val data = if (manga.chapters.isNullOrEmpty()) repo.getDetails(manga) else manga
-					output = LocalMangaOutput.getOrCreate(destination, data)
-					val coverUrl = data.largeCoverUrl.ifNullOrEmpty { data.coverUrl }
-					if (coverUrl.isNotEmpty()) {
-						downloadFile(coverUrl, destination, tempFileName, repo.source).let { file ->
-							output.addCover(file, MimeTypeMap.getFileExtensionFromUrl(coverUrl))
-						}
-					}
-					val chapters = checkNotNull(
-						if (chaptersIdsSet == null) {
-							data.chapters
-						} else {
-							data.chapters?.filter { x -> chaptersIdsSet.remove(x.id) }
-						},
-					) { "Chapters list must not be null" }
-					check(chapters.isNotEmpty()) { "Chapters list must not be empty" }
-					check(chaptersIdsSet.isNullOrEmpty()) {
-						"${chaptersIdsSet?.size} of ${chaptersIds?.size} requested chapters not found in manga"
-					}
-					for ((chapterIndex, chapter) in chapters.withIndex()) {
-						val pages = runFailsafe(outState, pausingHandle) {
-							repo.getPages(chapter)
-						}
-						for ((pageIndex, page) in pages.withIndex()) {
-							runFailsafe(outState, pausingHandle) {
-								val url = repo.getPageUrl(page)
-								val file = cache.get(url)
-									?: downloadFile(url, destination, tempFileName, repo.source)
-								output.addPage(
-									chapter = chapter,
-									file = file,
-									pageNumber = pageIndex,
-									ext = MimeTypeMap.getFileExtensionFromUrl(url),
-								)
-							}
-							outState.value = DownloadState.Progress(
-								startId = startId,
-								manga = data,
-								cover = cover,
-								totalChapters = chapters.size,
-								currentChapter = chapterIndex,
-								totalPages = pages.size,
-								currentPage = pageIndex,
-							)
-
-							if (settings.isDownloadsSlowdownEnabled) {
-								delay(SLOWDOWN_DELAY)
-							}
-						}
-						if (output.flushChapter(chapter)) {
-							runCatchingCancellable {
-								localStorageChanges.emit(LocalMangaInput.of(output.rootFile).getManga())
-							}.onFailure(Throwable::printStackTraceDebug)
-						}
-					}
-					outState.value = DownloadState.PostProcessing(startId, data, cover)
-					output.mergeWithExisting()
-					output.finish()
-					val localManga = LocalMangaInput.of(output.rootFile).getManga()
-					localStorageChanges.emit(localManga)
-					outState.value = DownloadState.Done(startId, data, cover, localManga.manga)
-				} catch (e: CancellationException) {
-					outState.value = DownloadState.Cancelled(startId, manga, cover)
-					throw e
-				} catch (e: Throwable) {
-					e.printStackTraceDebug()
-					outState.value = DownloadState.Error(startId, manga, cover, e, false)
-				} finally {
-					withContext(NonCancellable) {
-						output?.closeQuietly()
-						output?.cleanup()
-						File(destination, tempFileName).deleteAwait()
-					}
-				}
-			}
-		}
-	}
-
-	private suspend fun <R> runFailsafe(
-		outState: MutableStateFlow<DownloadState>,
-		pausingHandle: PausingHandle,
-		block: suspend () -> R,
-	): R {
-		var countDown = MAX_FAILSAFE_ATTEMPTS
-		failsafe@ while (true) {
-			try {
-				return block()
-			} catch (e: IOException) {
-				if (countDown <= 0) {
-					val state = outState.value
-					outState.value = DownloadState.Error(state.startId, state.manga, state.cover, e, true)
-					countDown = MAX_FAILSAFE_ATTEMPTS
-					pausingHandle.pause()
-					pausingHandle.awaitResumed()
-					outState.value = state
-				} else {
-					countDown--
-					delay(DOWNLOAD_ERROR_DELAY)
-				}
-			}
-		}
-	}
-
-	private suspend fun downloadFile(
-		url: String,
-		destination: File,
-		tempFileName: String,
-		source: MangaSource,
-	): File {
-		val request = Request.Builder()
-			.url(url)
-			.tag(MangaSource::class.java, source)
-			.cacheControl(CommonHeaders.CACHE_CONTROL_NO_STORE)
-			.get()
-			.build()
-		val call = okHttp.newCall(request)
-		val file = File(destination, tempFileName)
-		val response = call.clone().await()
-		file.outputStream().use { out ->
-			checkNotNull(response.body).byteStream().copyToSuspending(out)
-		}
-		return file
-	}
-
-	private fun errorStateHandler(outState: MutableStateFlow<DownloadState>) =
-		CoroutineExceptionHandler { _, throwable ->
-			throwable.printStackTraceDebug()
-			val prevValue = outState.value
-			outState.value = DownloadState.Error(
-				startId = prevValue.startId,
-				manga = prevValue.manga,
-				cover = prevValue.cover,
-				error = throwable,
-				canRetry = false,
-			)
-		}
-
-	private suspend fun loadCover(manga: Manga) = runCatchingCancellable {
-		imageLoader.execute(
-			ImageRequest.Builder(context)
-				.data(manga.coverUrl)
-				.allowHardware(false)
-				.tag(manga.source)
-				.size(coverWidth, coverHeight)
-				.scale(Scale.FILL)
-				.build(),
-		).drawable
-	}.getOrNull()
-
-	private suspend inline fun <T> withMangaLock(manga: Manga, block: () -> T) = try {
-		localMangaRepository.lockManga(manga.id)
-		block()
-	} finally {
-		localMangaRepository.unlockManga(manga.id)
-	}
-}

app/src/main/java/org/koitharu/kotatsu/download/domain/DownloadState.kt

@@ -1,234 +1,123 @@
 package org.koitharu.kotatsu.download.domain
 
-import android.graphics.drawable.Drawable
+import androidx.work.Data
+import org.koitharu.kotatsu.history.domain.PROGRESS_NONE
+import org.koitharu.kotatsu.local.data.LocalManga
 import org.koitharu.kotatsu.parsers.model.Manga
+import java.util.Date
 
-sealed interface DownloadState {
+data class DownloadState(
+	val manga: Manga,
+	val isIndeterminate: Boolean,
+	val isPaused: Boolean = false,
+	val isStopped: Boolean = false,
+	val error: String? = null,
+	val totalChapters: Int = 0,
+	val currentChapter: Int = 0,
+	val totalPages: Int = 0,
+	val currentPage: Int = 0,
+	val eta: Long = -1L,
+	val localManga: LocalManga? = null,
+	val downloadedChapters: LongArray = LongArray(0),
+	val timestamp: Long = System.currentTimeMillis(),
+) {
 
-	val startId: Int
-	val manga: Manga
-	val cover: Drawable?
+	val max: Int = totalChapters * totalPages
 
-	override fun equals(other: Any?): Boolean
+	val progress: Int = totalPages * currentChapter + currentPage + 1
 
-	override fun hashCode(): Int
+	val percent: Float = if (max > 0) progress.toFloat() / max else PROGRESS_NONE
 
-	val isTerminal: Boolean
-		get() = this is Done || this is Cancelled || (this is Error && !canRetry)
+	val isFinalState: Boolean
+		get() = localManga != null || (error != null && !isPaused)
 
-	class Queued(
-		override val startId: Int,
-		override val manga: Manga,
-		override val cover: Drawable?,
-	) : DownloadState {
+	val isParticularProgress: Boolean
+		get() = localManga == null && error == null && !isPaused && !isStopped && max > 0 && !isIndeterminate
 
-		override fun equals(other: Any?): Boolean {
-			if (this === other) return true
-			if (javaClass != other?.javaClass) return false
+	fun toWorkData() = Data.Builder()
+		.putLong(DATA_MANGA_ID, manga.id)
+		.putInt(DATA_MAX, max)
+		.putInt(DATA_PROGRESS, progress)
+		.putLong(DATA_ETA, eta)
+		.putLong(DATA_TIMESTAMP, timestamp)
+		.putString(DATA_ERROR, error)
+		.putLongArray(DATA_CHAPTERS, downloadedChapters)
+		.putBoolean(DATA_INDETERMINATE, isIndeterminate)
+		.putBoolean(DATA_PAUSED, isPaused)
+		.build()
 
-			other as Queued
+	override fun equals(other: Any?): Boolean {
+		if (this === other) return true
+		if (javaClass != other?.javaClass) return false
 
-			if (startId != other.startId) return false
-			if (manga != other.manga) return false
-			if (cover != other.cover) return false
+		other as DownloadState
 
-			return true
-		}
-
-		override fun hashCode(): Int {
-			var result = startId
-			result = 31 * result + manga.hashCode()
-			result = 31 * result + (cover?.hashCode() ?: 0)
-			return result
-		}
+		if (manga != other.manga) return false
+		if (isIndeterminate != other.isIndeterminate) return false
+		if (isPaused != other.isPaused) return false
+		if (isStopped != other.isStopped) return false
+		if (error != other.error) return false
+		if (totalChapters != other.totalChapters) return false
+		if (currentChapter != other.currentChapter) return false
+		if (totalPages != other.totalPages) return false
+		if (currentPage != other.currentPage) return false
+		if (eta != other.eta) return false
+		if (localManga != other.localManga) return false
+		if (!downloadedChapters.contentEquals(other.downloadedChapters)) return false
+		if (timestamp != other.timestamp) return false
+		if (max != other.max) return false
+		if (progress != other.progress) return false
+		return percent == other.percent
 	}
 
-	class Preparing(
-		override val startId: Int,
-		override val manga: Manga,
-		override val cover: Drawable?,
-	) : DownloadState {
-
-		override fun equals(other: Any?): Boolean {
-			if (this === other) return true
-			if (javaClass != other?.javaClass) return false
-
-			other as Preparing
-
-			if (startId != other.startId) return false
-			if (manga != other.manga) return false
-			if (cover != other.cover) return false
-
-			return true
-		}
-
-		override fun hashCode(): Int {
-			var result = startId
-			result = 31 * result + manga.hashCode()
-			result = 31 * result + (cover?.hashCode() ?: 0)
-			return result
-		}
+	override fun hashCode(): Int {
+		var result = manga.hashCode()
+		result = 31 * result + isIndeterminate.hashCode()
+		result = 31 * result + isPaused.hashCode()
+		result = 31 * result + isStopped.hashCode()
+		result = 31 * result + (error?.hashCode() ?: 0)
+		result = 31 * result + totalChapters
+		result = 31 * result + currentChapter
+		result = 31 * result + totalPages
+		result = 31 * result + currentPage
+		result = 31 * result + eta.hashCode()
+		result = 31 * result + (localManga?.hashCode() ?: 0)
+		result = 31 * result + downloadedChapters.contentHashCode()
+		result = 31 * result + timestamp.hashCode()
+		result = 31 * result + max
+		result = 31 * result + progress
+		result = 31 * result + percent.hashCode()
+		return result
 	}
 
-	class Progress(
-		override val startId: Int,
-		override val manga: Manga,
-		override val cover: Drawable?,
-		val totalChapters: Int,
-		val currentChapter: Int,
-		val totalPages: Int,
-		val currentPage: Int,
-	) : DownloadState {
+	companion object {
 
-		val max: Int = totalChapters * totalPages
+		private const val DATA_MANGA_ID = "manga_id"
+		private const val DATA_MAX = "max"
+		private const val DATA_PROGRESS = "progress"
+		private const val DATA_CHAPTERS = "chapter"
+		private const val DATA_ETA = "eta"
+		private const val DATA_TIMESTAMP = "timestamp"
+		private const val DATA_ERROR = "error"
+		private const val DATA_INDETERMINATE = "indeterminate"
+		private const val DATA_PAUSED = "paused"
 
-		val progress: Int = totalPages * currentChapter + currentPage + 1
+		fun getMangaId(data: Data): Long = data.getLong(DATA_MANGA_ID, 0L)
 
-		val percent: Float = progress.toFloat() / max
+		fun isIndeterminate(data: Data): Boolean = data.getBoolean(DATA_INDETERMINATE, false)
 
-		override fun equals(other: Any?): Boolean {
-			if (this === other) return true
-			if (javaClass != other?.javaClass) return false
+		fun isPaused(data: Data): Boolean = data.getBoolean(DATA_PAUSED, false)
 
-			other as Progress
+		fun getMax(data: Data): Int = data.getInt(DATA_MAX, 0)
 
-			if (startId != other.startId) return false
-			if (manga != other.manga) return false
-			if (cover != other.cover) return false
-			if (totalChapters != other.totalChapters) return false
-			if (currentChapter != other.currentChapter) return false
-			if (totalPages != other.totalPages) return false
-			if (currentPage != other.currentPage) return false
+		fun getError(data: Data): String? = data.getString(DATA_ERROR)
 
-			return true
-		}
+		fun getProgress(data: Data): Int = data.getInt(DATA_PROGRESS, 0)
 
-		override fun hashCode(): Int {
-			var result = startId
-			result = 31 * result + manga.hashCode()
-			result = 31 * result + (cover?.hashCode() ?: 0)
-			result = 31 * result + totalChapters
-			result = 31 * result + currentChapter
-			result = 31 * result + totalPages
-			result = 31 * result + currentPage
-			return result
-		}
-	}
+		fun getEta(data: Data): Long = data.getLong(DATA_ETA, -1L)
 
-	class Done(
-		override val startId: Int,
-		override val manga: Manga,
-		override val cover: Drawable?,
-		val localManga: Manga,
-	) : DownloadState {
+		fun getTimestamp(data: Data): Date = Date(data.getLong(DATA_TIMESTAMP, 0L))
 
-		override fun equals(other: Any?): Boolean {
-			if (this === other) return true
-			if (javaClass != other?.javaClass) return false
-
-			other as Done
-
-			if (startId != other.startId) return false
-			if (manga != other.manga) return false
-			if (cover != other.cover) return false
-			if (localManga != other.localManga) return false
-
-			return true
-		}
-
-		override fun hashCode(): Int {
-			var result = startId
-			result = 31 * result + manga.hashCode()
-			result = 31 * result + (cover?.hashCode() ?: 0)
-			result = 31 * result + localManga.hashCode()
-			return result
-		}
-	}
-
-	class Error(
-		override val startId: Int,
-		override val manga: Manga,
-		override val cover: Drawable?,
-		val error: Throwable,
-		val canRetry: Boolean,
-	) : DownloadState {
-
-		override fun equals(other: Any?): Boolean {
-			if (this === other) return true
-			if (javaClass != other?.javaClass) return false
-
-			other as Error
-
-			if (startId != other.startId) return false
-			if (manga != other.manga) return false
-			if (cover != other.cover) return false
-			if (error != other.error) return false
-			if (canRetry != other.canRetry) return false
-
-			return true
-		}
-
-		override fun hashCode(): Int {
-			var result = startId
-			result = 31 * result + manga.hashCode()
-			result = 31 * result + (cover?.hashCode() ?: 0)
-			result = 31 * result + error.hashCode()
-			result = 31 * result + canRetry.hashCode()
-			return result
-		}
-	}
-
-	class Cancelled(
-		override val startId: Int,
-		override val manga: Manga,
-		override val cover: Drawable?,
-	) : DownloadState {
-
-		override fun equals(other: Any?): Boolean {
-			if (this === other) return true
-			if (javaClass != other?.javaClass) return false
-
-			other as Cancelled
-
-			if (startId != other.startId) return false
-			if (manga != other.manga) return false
-			if (cover != other.cover) return false
-
-			return true
-		}
-
-		override fun hashCode(): Int {
-			var result = startId
-			result = 31 * result + manga.hashCode()
-			result = 31 * result + (cover?.hashCode() ?: 0)
-			return result
-		}
-	}
-
-	class PostProcessing(
-		override val startId: Int,
-		override val manga: Manga,
-		override val cover: Drawable?,
-	) : DownloadState {
-
-		override fun equals(other: Any?): Boolean {
-			if (this === other) return true
-			if (javaClass != other?.javaClass) return false
-
-			other as PostProcessing
-
-			if (startId != other.startId) return false
-			if (manga != other.manga) return false
-			if (cover != other.cover) return false
-
-			return true
-		}
-
-		override fun hashCode(): Int {
-			var result = startId
-			result = 31 * result + manga.hashCode()
-			result = 31 * result + (cover?.hashCode() ?: 0)
-			return result
-		}
+		fun getDownloadedChapters(data: Data): LongArray = data.getLongArray(DATA_CHAPTERS) ?: LongArray(0)
 	}
 }

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

@@ -1,140 +0,0 @@
-package org.koitharu.kotatsu.download.ui
-
-import android.view.View
-import androidx.core.view.isVisible
-import androidx.lifecycle.LifecycleOwner
-import androidx.lifecycle.lifecycleScope
-import coil.ImageLoader
-import com.hannesdorfmann.adapterdelegates4.dsl.adapterDelegateViewBinding
-import kotlinx.coroutines.Job
-import kotlinx.coroutines.flow.launchIn
-import kotlinx.coroutines.flow.onEach
-import org.koitharu.kotatsu.R
-import org.koitharu.kotatsu.databinding.ItemDownloadBinding
-import org.koitharu.kotatsu.details.ui.DetailsActivity
-import org.koitharu.kotatsu.download.domain.DownloadState
-import org.koitharu.kotatsu.parsers.util.format
-import org.koitharu.kotatsu.utils.ext.enqueueWith
-import org.koitharu.kotatsu.utils.ext.getDisplayMessage
-import org.koitharu.kotatsu.utils.ext.newImageRequest
-import org.koitharu.kotatsu.utils.ext.onFirst
-import org.koitharu.kotatsu.utils.ext.source
-
-fun downloadItemAD(
-	lifecycleOwner: LifecycleOwner,
-	coil: ImageLoader,
-) = adapterDelegateViewBinding<DownloadItem, DownloadItem, ItemDownloadBinding>(
-	{ inflater, parent -> ItemDownloadBinding.inflate(inflater, parent, false) },
-) {
-	var job: Job? = null
-	val percentPattern = context.resources.getString(R.string.percent_string_pattern)
-
-	val clickListener = View.OnClickListener { v ->
-		when (v.id) {
-			R.id.button_cancel -> item.cancel()
-			R.id.button_resume -> item.resume()
-			else -> context.startActivity(
-				DetailsActivity.newIntent(context, item.progressValue.manga),
-			)
-		}
-	}
-	binding.buttonCancel.setOnClickListener(clickListener)
-	binding.buttonResume.setOnClickListener(clickListener)
-	itemView.setOnClickListener(clickListener)
-
-	bind {
-		job?.cancel()
-		job = item.progressAsFlow().onFirst { state ->
-			binding.imageViewCover.newImageRequest(lifecycleOwner, state.manga.coverUrl)?.run {
-				placeholder(state.cover)
-				fallback(R.drawable.ic_placeholder)
-				error(R.drawable.ic_error_placeholder)
-				source(state.manga.source)
-				allowRgb565(true)
-				enqueueWith(coil)
-			}
-		}.onEach { state ->
-			binding.textViewTitle.text = state.manga.title
-			when (state) {
-				is DownloadState.Cancelled -> {
-					binding.textViewStatus.setText(R.string.cancelling_)
-					binding.progressBar.isIndeterminate = true
-					binding.progressBar.isVisible = true
-					binding.textViewPercent.isVisible = false
-					binding.textViewDetails.isVisible = false
-					binding.buttonCancel.isVisible = false
-					binding.buttonResume.isVisible = false
-				}
-
-				is DownloadState.Done -> {
-					binding.textViewStatus.setText(R.string.download_complete)
-					binding.progressBar.isIndeterminate = false
-					binding.progressBar.isVisible = false
-					binding.textViewPercent.isVisible = false
-					binding.textViewDetails.isVisible = false
-					binding.buttonCancel.isVisible = false
-					binding.buttonResume.isVisible = false
-				}
-
-				is DownloadState.Error -> {
-					binding.textViewStatus.setText(R.string.error_occurred)
-					binding.progressBar.isIndeterminate = false
-					binding.progressBar.isVisible = false
-					binding.textViewPercent.isVisible = false
-					binding.textViewDetails.text = state.error.getDisplayMessage(context.resources)
-					binding.textViewDetails.isVisible = true
-					binding.buttonCancel.isVisible = state.canRetry
-					binding.buttonResume.isVisible = state.canRetry
-				}
-
-				is DownloadState.PostProcessing -> {
-					binding.textViewStatus.setText(R.string.processing_)
-					binding.progressBar.isIndeterminate = true
-					binding.progressBar.isVisible = true
-					binding.textViewPercent.isVisible = false
-					binding.textViewDetails.isVisible = false
-					binding.buttonCancel.isVisible = false
-					binding.buttonResume.isVisible = false
-				}
-
-				is DownloadState.Preparing -> {
-					binding.textViewStatus.setText(R.string.preparing_)
-					binding.progressBar.isIndeterminate = true
-					binding.progressBar.isVisible = true
-					binding.textViewPercent.isVisible = false
-					binding.textViewDetails.isVisible = false
-					binding.buttonCancel.isVisible = true
-					binding.buttonResume.isVisible = false
-				}
-
-				is DownloadState.Progress -> {
-					binding.textViewStatus.setText(R.string.manga_downloading_)
-					binding.progressBar.isIndeterminate = false
-					binding.progressBar.isVisible = true
-					binding.progressBar.max = state.max
-					binding.progressBar.setProgressCompat(state.progress, true)
-					binding.textViewPercent.text = percentPattern.format((state.percent * 100f).format(1))
-					binding.textViewPercent.isVisible = true
-					binding.textViewDetails.isVisible = false
-					binding.buttonCancel.isVisible = true
-					binding.buttonResume.isVisible = false
-				}
-
-				is DownloadState.Queued -> {
-					binding.textViewStatus.setText(R.string.queued)
-					binding.progressBar.isIndeterminate = false
-					binding.progressBar.isVisible = false
-					binding.textViewPercent.isVisible = false
-					binding.textViewDetails.isVisible = false
-					binding.buttonCancel.isVisible = true
-					binding.buttonResume.isVisible = false
-				}
-			}
-		}.launchIn(lifecycleOwner.lifecycleScope)
-	}
-
-	onViewRecycled {
-		job?.cancel()
-		job = null
-	}
-}

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

@@ -1,58 +0,0 @@
-package org.koitharu.kotatsu.download.ui
-
-import android.content.Context
-import android.content.Intent
-import android.os.Bundle
-import androidx.core.graphics.Insets
-import androidx.core.view.isVisible
-import androidx.core.view.updatePadding
-import coil.ImageLoader
-import dagger.hilt.android.AndroidEntryPoint
-import org.koitharu.kotatsu.R
-import org.koitharu.kotatsu.base.ui.BaseActivity
-import org.koitharu.kotatsu.base.ui.list.decor.SpacingItemDecoration
-import org.koitharu.kotatsu.databinding.ActivityDownloadsBinding
-import javax.inject.Inject
-
-@AndroidEntryPoint
-class DownloadsActivity : BaseActivity<ActivityDownloadsBinding>() {
-
-	@Inject
-	lateinit var coil: ImageLoader
-
-	private lateinit var serviceConnection: DownloadsConnection
-
-	override fun onCreate(savedInstanceState: Bundle?) {
-		super.onCreate(savedInstanceState)
-		setContentView(ActivityDownloadsBinding.inflate(layoutInflater))
-		supportActionBar?.setDisplayHomeAsUpEnabled(true)
-		val adapter = DownloadsAdapter(this, coil)
-		val spacing = resources.getDimensionPixelOffset(R.dimen.list_spacing)
-		binding.recyclerView.addItemDecoration(SpacingItemDecoration(spacing))
-		binding.recyclerView.setHasFixedSize(true)
-		binding.recyclerView.adapter = adapter
-		serviceConnection = DownloadsConnection(this, this)
-		serviceConnection.items.observe(this) { items ->
-			adapter.items = items
-			binding.textViewHolder.isVisible = items.isNullOrEmpty()
-		}
-		serviceConnection.bind()
-	}
-
-	override fun onWindowInsetsChanged(insets: Insets) {
-		binding.recyclerView.updatePadding(
-			left = insets.left,
-			right = insets.right,
-			bottom = insets.bottom,
-		)
-		binding.toolbar.updatePadding(
-			left = insets.left,
-			right = insets.right,
-		)
-	}
-
-	companion object {
-
-		fun newIntent(context: Context) = Intent(context, DownloadsActivity::class.java)
-	}
-}

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

@@ -1,46 +0,0 @@
-package org.koitharu.kotatsu.download.ui
-
-import androidx.lifecycle.LifecycleOwner
-import androidx.recyclerview.widget.DiffUtil
-import coil.ImageLoader
-import com.hannesdorfmann.adapterdelegates4.AsyncListDifferDelegationAdapter
-import org.koitharu.kotatsu.download.domain.DownloadState
-import org.koitharu.kotatsu.utils.progress.PausingProgressJob
-
-typealias DownloadItem = PausingProgressJob<DownloadState>
-
-class DownloadsAdapter(
-	lifecycleOwner: LifecycleOwner,
-	coil: ImageLoader,
-) : AsyncListDifferDelegationAdapter<DownloadItem>(DiffCallback()) {
-
-	init {
-		delegatesManager.addDelegate(downloadItemAD(lifecycleOwner, coil))
-		setHasStableIds(true)
-	}
-
-	override fun getItemId(position: Int): Long {
-		return items[position].progressValue.startId.toLong()
-	}
-
-	private class DiffCallback : DiffUtil.ItemCallback<DownloadItem>() {
-
-		override fun areItemsTheSame(
-			oldItem: DownloadItem,
-			newItem: DownloadItem,
-		): Boolean {
-			return oldItem.progressValue.startId == newItem.progressValue.startId
-		}
-
-		override fun areContentsTheSame(
-			oldItem: DownloadItem,
-			newItem: DownloadItem,
-		): Boolean {
-			return oldItem.progressValue == newItem.progressValue && oldItem.isPaused == newItem.isPaused
-		}
-
-		override fun getChangePayload(oldItem: DownloadItem, newItem: DownloadItem): Any {
-			return Unit
-		}
-	}
-}

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

@@ -1,76 +0,0 @@
-package org.koitharu.kotatsu.download.ui
-
-import android.content.ComponentName
-import android.content.Context
-import android.content.Intent
-import android.content.ServiceConnection
-import android.os.IBinder
-import androidx.lifecycle.DefaultLifecycleObserver
-import androidx.lifecycle.LifecycleOwner
-import androidx.lifecycle.lifecycleScope
-import kotlinx.coroutines.Job
-import kotlinx.coroutines.flow.MutableStateFlow
-import kotlinx.coroutines.launch
-import org.koitharu.kotatsu.download.domain.DownloadState
-import org.koitharu.kotatsu.download.ui.service.DownloadService
-import org.koitharu.kotatsu.utils.asFlowLiveData
-import org.koitharu.kotatsu.utils.progress.PausingProgressJob
-
-class DownloadsConnection(
-	private val context: Context,
-	private val lifecycleOwner: LifecycleOwner,
-) : ServiceConnection {
-
-	private var bindingObserver: BindingLifecycleObserver? = null
-	private var collectJob: Job? = null
-	private val itemsFlow = MutableStateFlow<List<PausingProgressJob<DownloadState>>>(emptyList())
-
-	val items
-		get() = itemsFlow.asFlowLiveData()
-
-	override fun onServiceConnected(name: ComponentName?, service: IBinder?) {
-		collectJob?.cancel()
-		val binder = (service as? DownloadService.DownloadBinder)
-		collectJob = if (binder == null) {
-			null
-		} else {
-			lifecycleOwner.lifecycleScope.launch {
-				binder.downloads.collect {
-					itemsFlow.value = it
-				}
-			}
-		}
-	}
-
-	override fun onServiceDisconnected(name: ComponentName?) {
-		collectJob?.cancel()
-		collectJob = null
-		itemsFlow.value = itemsFlow.value.filter { it.progressValue.isTerminal }
-	}
-
-	fun bind() {
-		if (bindingObserver != null) {
-			return
-		}
-		bindingObserver = BindingLifecycleObserver().also {
-			lifecycleOwner.lifecycle.addObserver(it)
-		}
-		context.bindService(Intent(context, DownloadService::class.java), this, 0)
-	}
-
-	fun unbind() {
-		bindingObserver?.let {
-			lifecycleOwner.lifecycle.removeObserver(it)
-		}
-		bindingObserver = null
-		context.unbindService(this)
-	}
-
-	private inner class BindingLifecycleObserver : DefaultLifecycleObserver {
-
-		override fun onDestroy(owner: LifecycleOwner) {
-			super.onDestroy(owner)
-			unbind()
-		}
-	}
-}

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

@@ -0,0 +1,140 @@
+package org.koitharu.kotatsu.download.ui.list
+
+import android.view.View
+import androidx.core.view.isVisible
+import androidx.lifecycle.LifecycleOwner
+import androidx.work.WorkInfo
+import coil.ImageLoader
+import com.hannesdorfmann.adapterdelegates4.dsl.adapterDelegateViewBinding
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.databinding.ItemDownloadBinding
+import org.koitharu.kotatsu.list.ui.model.ListModel
+import org.koitharu.kotatsu.parsers.util.format
+import org.koitharu.kotatsu.utils.ext.disposeImageRequest
+import org.koitharu.kotatsu.utils.ext.enqueueWith
+import org.koitharu.kotatsu.utils.ext.newImageRequest
+import org.koitharu.kotatsu.utils.ext.source
+import org.koitharu.kotatsu.utils.ext.textAndVisible
+
+fun downloadItemAD(
+	lifecycleOwner: LifecycleOwner,
+	coil: ImageLoader,
+	listener: DownloadItemListener,
+) = adapterDelegateViewBinding<DownloadItemModel, ListModel, ItemDownloadBinding>(
+	{ inflater, parent -> ItemDownloadBinding.inflate(inflater, parent, false) },
+) {
+
+	val percentPattern = context.resources.getString(R.string.percent_string_pattern)
+
+	val clickListener = object : View.OnClickListener, View.OnLongClickListener {
+		override fun onClick(v: View) {
+			when (v.id) {
+				R.id.button_cancel -> listener.onCancelClick(item)
+				R.id.button_resume -> listener.onResumeClick(item)
+				R.id.button_pause -> listener.onPauseClick(item)
+				else -> listener.onItemClick(item, v)
+			}
+		}
+
+		override fun onLongClick(v: View): Boolean {
+			return listener.onItemLongClick(item, v)
+		}
+	}
+	binding.buttonCancel.setOnClickListener(clickListener)
+	binding.buttonPause.setOnClickListener(clickListener)
+	binding.buttonResume.setOnClickListener(clickListener)
+	itemView.setOnClickListener(clickListener)
+	itemView.setOnLongClickListener(clickListener)
+
+	bind { payloads ->
+		binding.textViewTitle.text = item.manga.title
+		binding.imageViewCover.newImageRequest(lifecycleOwner, item.manga.coverUrl)?.apply {
+			placeholder(R.drawable.ic_placeholder)
+			fallback(R.drawable.ic_placeholder)
+			error(R.drawable.ic_error_placeholder)
+			allowRgb565(true)
+			source(item.manga.source)
+			enqueueWith(coil)
+		}
+		when (item.workState) {
+			WorkInfo.State.ENQUEUED,
+			WorkInfo.State.BLOCKED -> {
+				binding.textViewStatus.setText(R.string.queued)
+				binding.progressBar.isIndeterminate = false
+				binding.progressBar.isVisible = false
+				binding.progressBar.isEnabled = true
+				binding.textViewPercent.isVisible = false
+				binding.textViewDetails.isVisible = false
+				binding.buttonCancel.isVisible = true
+				binding.buttonResume.isVisible = false
+				binding.buttonPause.isVisible = false
+			}
+
+			WorkInfo.State.RUNNING -> {
+				binding.textViewStatus.setText(
+					if (item.isPaused) R.string.paused else R.string.manga_downloading_,
+				)
+				binding.progressBar.isIndeterminate = item.isIndeterminate
+				binding.progressBar.isVisible = true
+				binding.progressBar.max = item.max
+				binding.progressBar.isEnabled = !item.isPaused
+				binding.progressBar.setProgressCompat(item.progress, payloads.isNotEmpty())
+				binding.textViewPercent.text = percentPattern.format((item.percent * 100f).format(1))
+				binding.textViewPercent.isVisible = true
+				binding.textViewDetails.textAndVisible = item.getEtaString()
+				binding.buttonCancel.isVisible = true
+				binding.buttonResume.isVisible = item.isPaused
+				binding.buttonPause.isVisible = item.canPause
+			}
+
+			WorkInfo.State.SUCCEEDED -> {
+				binding.textViewStatus.setText(R.string.download_complete)
+				binding.progressBar.isIndeterminate = false
+				binding.progressBar.isVisible = false
+				binding.progressBar.isEnabled = true
+				binding.textViewPercent.isVisible = false
+				if (item.totalChapters > 0) {
+					binding.textViewDetails.text = context.resources.getQuantityString(
+						R.plurals.chapters,
+						item.totalChapters,
+						item.totalChapters,
+					)
+					binding.textViewDetails.isVisible = true
+				} else {
+					binding.textViewDetails.isVisible = false
+				}
+				binding.buttonCancel.isVisible = false
+				binding.buttonResume.isVisible = false
+				binding.buttonPause.isVisible = false
+			}
+
+			WorkInfo.State.FAILED -> {
+				binding.textViewStatus.setText(R.string.error_occurred)
+				binding.progressBar.isIndeterminate = false
+				binding.progressBar.isVisible = false
+				binding.progressBar.isEnabled = true
+				binding.textViewPercent.isVisible = false
+				binding.textViewDetails.textAndVisible = item.error
+				binding.buttonCancel.isVisible = false
+				binding.buttonResume.isVisible = false
+				binding.buttonPause.isVisible = false
+			}
+
+			WorkInfo.State.CANCELLED -> {
+				binding.textViewStatus.setText(R.string.canceled)
+				binding.progressBar.isIndeterminate = false
+				binding.progressBar.isVisible = false
+				binding.progressBar.isEnabled = true
+				binding.textViewPercent.isVisible = false
+				binding.textViewDetails.isVisible = false
+				binding.buttonCancel.isVisible = false
+				binding.buttonResume.isVisible = false
+				binding.buttonPause.isVisible = false
+			}
+		}
+	}
+
+	onViewRecycled {
+		binding.imageViewCover.disposeImageRequest()
+	}
+}

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

@@ -0,0 +1,12 @@
+package org.koitharu.kotatsu.download.ui.list
+
+import org.koitharu.kotatsu.base.ui.list.OnListItemClickListener
+
+interface DownloadItemListener : OnListItemClickListener<DownloadItemModel> {
+
+	fun onCancelClick(item: DownloadItemModel)
+
+	fun onPauseClick(item: DownloadItemModel)
+
+	fun onResumeClick(item: DownloadItemModel)
+}

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

@@ -0,0 +1,83 @@
+package org.koitharu.kotatsu.download.ui.list
+
+import android.text.format.DateUtils
+import androidx.work.WorkInfo
+import org.koitharu.kotatsu.list.ui.model.ListModel
+import org.koitharu.kotatsu.parsers.model.Manga
+import java.util.Date
+import java.util.UUID
+
+class DownloadItemModel(
+	val id: UUID,
+	val workState: WorkInfo.State,
+	val isIndeterminate: Boolean,
+	val isPaused: Boolean,
+	val manga: Manga,
+	val error: String?,
+	val max: Int,
+	val totalChapters: Int,
+	val progress: Int,
+	val eta: Long,
+	val timestamp: Date,
+) : ListModel, Comparable<DownloadItemModel> {
+
+	val percent: Float
+		get() = if (max > 0) progress / max.toFloat() else 0f
+
+	val hasEta: Boolean
+		get() = workState == WorkInfo.State.RUNNING && !isPaused && eta > 0L
+
+	val canPause: Boolean
+		get() = workState == WorkInfo.State.RUNNING && !isPaused && error == null
+
+	val canResume: Boolean
+		get() = workState == WorkInfo.State.RUNNING && isPaused
+
+	fun getEtaString(): CharSequence? = if (hasEta) {
+		DateUtils.getRelativeTimeSpanString(
+			eta,
+			System.currentTimeMillis(),
+			DateUtils.SECOND_IN_MILLIS,
+		)
+	} else {
+		null
+	}
+
+	override fun compareTo(other: DownloadItemModel): Int {
+		return timestamp.compareTo(other.timestamp)
+	}
+
+	override fun equals(other: Any?): Boolean {
+		if (this === other) return true
+		if (javaClass != other?.javaClass) return false
+
+		other as DownloadItemModel
+
+		if (id != other.id) return false
+		if (workState != other.workState) return false
+		if (isIndeterminate != other.isIndeterminate) return false
+		if (isPaused != other.isPaused) return false
+		if (manga != other.manga) return false
+		if (error != other.error) return false
+		if (max != other.max) return false
+		if (totalChapters != other.totalChapters) return false
+		if (progress != other.progress) return false
+		if (eta != other.eta) return false
+		return timestamp == other.timestamp
+	}
+
+	override fun hashCode(): Int {
+		var result = id.hashCode()
+		result = 31 * result + workState.hashCode()
+		result = 31 * result + isIndeterminate.hashCode()
+		result = 31 * result + isPaused.hashCode()
+		result = 31 * result + manga.hashCode()
+		result = 31 * result + (error?.hashCode() ?: 0)
+		result = 31 * result + max
+		result = 31 * result + totalChapters
+		result = 31 * result + progress
+		result = 31 * result + eta.hashCode()
+		result = 31 * result + timestamp.hashCode()
+		return result
+	}
+}

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

@@ -0,0 +1,173 @@
+package org.koitharu.kotatsu.download.ui.list
+
+import android.content.Context
+import android.content.Intent
+import android.os.Bundle
+import android.view.Menu
+import android.view.MenuItem
+import android.view.View
+import androidx.activity.viewModels
+import androidx.annotation.Px
+import androidx.appcompat.view.ActionMode
+import androidx.core.graphics.Insets
+import androidx.core.view.updatePadding
+import androidx.lifecycle.Observer
+import coil.ImageLoader
+import dagger.hilt.android.AndroidEntryPoint
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.base.ui.BaseActivity
+import org.koitharu.kotatsu.base.ui.list.ListSelectionController
+import org.koitharu.kotatsu.base.ui.list.decor.SpacingItemDecoration
+import org.koitharu.kotatsu.base.ui.util.ReversibleActionObserver
+import org.koitharu.kotatsu.databinding.ActivityDownloadsBinding
+import org.koitharu.kotatsu.details.ui.DetailsActivity
+import org.koitharu.kotatsu.download.ui.worker.PausingReceiver
+import javax.inject.Inject
+
+@AndroidEntryPoint
+class DownloadsActivity : BaseActivity<ActivityDownloadsBinding>(),
+	DownloadItemListener,
+	ListSelectionController.Callback2 {
+
+	@Inject
+	lateinit var coil: ImageLoader
+
+	private val viewModel by viewModels<DownloadsViewModel>()
+	private lateinit var selectionController: ListSelectionController
+
+	@Px
+	private var listSpacing = 0
+
+	override fun onCreate(savedInstanceState: Bundle?) {
+		super.onCreate(savedInstanceState)
+		setContentView(ActivityDownloadsBinding.inflate(layoutInflater))
+		listSpacing = resources.getDimensionPixelOffset(R.dimen.list_spacing)
+		supportActionBar?.setDisplayHomeAsUpEnabled(true)
+		val downloadsAdapter = DownloadsAdapter(this, coil, this)
+		val decoration = SpacingItemDecoration(listSpacing)
+		selectionController = ListSelectionController(
+			activity = this,
+			decoration = DownloadsSelectionDecoration(this),
+			registryOwner = this,
+			callback = this,
+		)
+		with(binding.recyclerView) {
+			setHasFixedSize(true)
+			addItemDecoration(decoration)
+			adapter = downloadsAdapter
+			selectionController.attachToRecyclerView(this)
+		}
+		addMenuProvider(DownloadsMenuProvider(this, viewModel))
+		viewModel.items.observe(this) {
+			downloadsAdapter.items = it
+		}
+		viewModel.onActionDone.observe(this, ReversibleActionObserver(binding.recyclerView))
+		val menuObserver = Observer<Any> { _ -> invalidateOptionsMenu() }
+		viewModel.hasActiveWorks.observe(this, menuObserver)
+		viewModel.hasPausedWorks.observe(this, menuObserver)
+		viewModel.hasCancellableWorks.observe(this, menuObserver)
+	}
+
+	override fun onWindowInsetsChanged(insets: Insets) {
+		binding.recyclerView.updatePadding(
+			left = insets.left + listSpacing,
+			right = insets.right + listSpacing,
+			bottom = insets.bottom,
+		)
+		binding.toolbar.updatePadding(
+			left = insets.left,
+			right = insets.right,
+		)
+	}
+
+	override fun onItemClick(item: DownloadItemModel, view: View) {
+		if (selectionController.onItemClick(item.id.mostSignificantBits)) {
+			return
+		}
+		startActivity(DetailsActivity.newIntent(view.context, item.manga))
+	}
+
+	override fun onItemLongClick(item: DownloadItemModel, view: View): Boolean {
+		return selectionController.onItemLongClick(item.id.mostSignificantBits)
+	}
+
+	override fun onCancelClick(item: DownloadItemModel) {
+		viewModel.cancel(item.id)
+	}
+
+	override fun onPauseClick(item: DownloadItemModel) {
+		sendBroadcast(PausingReceiver.getPauseIntent(item.id))
+	}
+
+	override fun onResumeClick(item: DownloadItemModel) {
+		sendBroadcast(PausingReceiver.getResumeIntent(item.id))
+	}
+
+	override fun onSelectionChanged(controller: ListSelectionController, count: Int) {
+		binding.recyclerView.invalidateItemDecorations()
+	}
+
+	override fun onCreateActionMode(controller: ListSelectionController, mode: ActionMode, menu: Menu): Boolean {
+		mode.menuInflater.inflate(R.menu.mode_downloads, menu)
+		return true
+	}
+
+	override fun onActionItemClicked(controller: ListSelectionController, mode: ActionMode, item: MenuItem): Boolean {
+		return when (item.itemId) {
+			R.id.action_resume -> {
+				viewModel.resume(controller.snapshot())
+				mode.finish()
+				true
+			}
+
+			R.id.action_pause -> {
+				viewModel.pause(controller.snapshot())
+				mode.finish()
+				true
+			}
+
+			R.id.action_cancel -> {
+				viewModel.cancel(controller.snapshot())
+				mode.finish()
+				true
+			}
+
+			R.id.action_remove -> {
+				viewModel.remove(controller.snapshot())
+				mode.finish()
+				true
+			}
+
+			R.id.action_select_all -> {
+				controller.addAll(viewModel.allIds())
+				true
+			}
+
+			else -> false
+		}
+	}
+
+	override fun onPrepareActionMode(controller: ListSelectionController, mode: ActionMode, menu: Menu): Boolean {
+		val snapshot = viewModel.snapshot(controller.peekCheckedIds())
+		var canPause = true
+		var canResume = true
+		var canCancel = true
+		var canRemove = true
+		for (item in snapshot) {
+			canPause = canPause and item.canPause
+			canResume = canResume and item.canResume
+			canCancel = canCancel and !item.workState.isFinished
+			canRemove = canRemove and item.workState.isFinished
+		}
+		menu.findItem(R.id.action_pause)?.isVisible = canPause
+		menu.findItem(R.id.action_resume)?.isVisible = canResume
+		menu.findItem(R.id.action_cancel)?.isVisible = canCancel
+		menu.findItem(R.id.action_remove)?.isVisible = canRemove
+		return super.onPrepareActionMode(controller, mode, menu)
+	}
+
+	companion object {
+
+		fun newIntent(context: Context) = Intent(context, DownloadsActivity::class.java)
+	}
+}

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

@@ -0,0 +1,65 @@
+package org.koitharu.kotatsu.download.ui.list
+
+import androidx.lifecycle.LifecycleOwner
+import androidx.recyclerview.widget.DiffUtil
+import coil.ImageLoader
+import com.hannesdorfmann.adapterdelegates4.AsyncListDifferDelegationAdapter
+import org.koitharu.kotatsu.core.ui.DateTimeAgo
+import org.koitharu.kotatsu.list.ui.adapter.emptyStateListAD
+import org.koitharu.kotatsu.list.ui.adapter.loadingStateAD
+import org.koitharu.kotatsu.list.ui.adapter.relatedDateItemAD
+import org.koitharu.kotatsu.list.ui.model.ListModel
+import kotlin.jvm.internal.Intrinsics
+
+class DownloadsAdapter(
+	lifecycleOwner: LifecycleOwner,
+	coil: ImageLoader,
+	listener: DownloadItemListener,
+) : AsyncListDifferDelegationAdapter<ListModel>(DiffCallback()) {
+
+	init {
+		delegatesManager.addDelegate(ITEM_TYPE_DOWNLOAD, downloadItemAD(lifecycleOwner, coil, listener))
+			.addDelegate(loadingStateAD())
+			.addDelegate(emptyStateListAD(coil, lifecycleOwner, null))
+			.addDelegate(relatedDateItemAD())
+	}
+
+	private class DiffCallback : DiffUtil.ItemCallback<ListModel>() {
+
+		override fun areItemsTheSame(oldItem: ListModel, newItem: ListModel) = when {
+
+			oldItem is DownloadItemModel && newItem is DownloadItemModel -> {
+				oldItem.id == newItem.id
+			}
+
+			oldItem is DateTimeAgo && newItem is DateTimeAgo -> {
+				oldItem == newItem
+			}
+
+			else -> oldItem.javaClass == newItem.javaClass
+		}
+
+		override fun areContentsTheSame(oldItem: ListModel, newItem: ListModel): Boolean {
+			return Intrinsics.areEqual(oldItem, newItem)
+		}
+
+		override fun getChangePayload(oldItem: ListModel, newItem: ListModel): Any? {
+			return when (newItem) {
+				is DownloadItemModel -> {
+					oldItem as DownloadItemModel
+					if (oldItem.workState == newItem.workState) {
+						Unit
+					} else {
+						null
+					}
+				}
+
+				else -> super.getChangePayload(oldItem, newItem)
+			}
+		}
+	}
+
+	companion object {
+		const val ITEM_TYPE_DOWNLOAD = 0
+	}
+}

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

@@ -0,0 +1,63 @@
+package org.koitharu.kotatsu.download.ui.list
+
+import android.content.Context
+import android.view.Menu
+import android.view.MenuInflater
+import android.view.MenuItem
+import androidx.core.view.MenuProvider
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import org.koitharu.kotatsu.R
+
+class DownloadsMenuProvider(
+	private val context: Context,
+	private val viewModel: DownloadsViewModel,
+) : MenuProvider {
+
+	override fun onCreateMenu(menu: Menu, menuInflater: MenuInflater) {
+		menuInflater.inflate(R.menu.opt_downloads, menu)
+	}
+
+	override fun onMenuItemSelected(menuItem: MenuItem): Boolean {
+		when (menuItem.itemId) {
+			R.id.action_pause -> viewModel.pauseAll()
+			R.id.action_resume -> viewModel.resumeAll()
+			R.id.action_cancel_all -> confirmCancelAll()
+			R.id.action_remove_completed -> confirmRemoveCompleted()
+			else -> return false
+		}
+		return true
+	}
+
+	override fun onPrepareMenu(menu: Menu) {
+		super.onPrepareMenu(menu)
+		menu.findItem(R.id.action_pause)?.isVisible = viewModel.hasActiveWorks.value == true
+		menu.findItem(R.id.action_resume)?.isVisible = viewModel.hasPausedWorks.value == true
+		menu.findItem(R.id.action_cancel_all)?.isVisible = viewModel.hasCancellableWorks.value == true
+	}
+
+	private fun confirmCancelAll() {
+		MaterialAlertDialogBuilder(
+			context,
+			com.google.android.material.R.style.ThemeOverlay_Material3_MaterialAlertDialog_Centered,
+		).setTitle(R.string.cancel_all)
+			.setMessage(R.string.cancel_all_downloads_confirm)
+			.setIcon(R.drawable.ic_cancel_multiple)
+			.setNegativeButton(android.R.string.cancel, null)
+			.setPositiveButton(R.string.confirm) { _, _ ->
+				viewModel.cancelAll()
+			}.show()
+	}
+
+	private fun confirmRemoveCompleted() {
+		MaterialAlertDialogBuilder(
+			context,
+			com.google.android.material.R.style.ThemeOverlay_Material3_MaterialAlertDialog_Centered,
+		).setTitle(R.string.remove_completed)
+			.setMessage(R.string.remove_completed_downloads_confirm)
+			.setIcon(R.drawable.ic_clear_all)
+			.setNegativeButton(android.R.string.cancel, null)
+			.setPositiveButton(R.string.clear) { _, _ ->
+				viewModel.removeCompleted()
+			}.show()
+	}
+}

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

@@ -0,0 +1,75 @@
+package org.koitharu.kotatsu.download.ui.list
+
+import android.content.Context
+import android.graphics.Canvas
+import android.graphics.Color
+import android.graphics.Paint
+import android.graphics.RectF
+import android.view.View
+import androidx.cardview.widget.CardView
+import androidx.core.content.ContextCompat
+import androidx.core.graphics.ColorUtils
+import androidx.recyclerview.widget.RecyclerView
+import androidx.recyclerview.widget.RecyclerView.NO_ID
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.base.ui.list.decor.AbstractSelectionItemDecoration
+import org.koitharu.kotatsu.utils.ext.getItem
+import org.koitharu.kotatsu.utils.ext.getThemeColor
+import com.google.android.material.R as materialR
+
+class DownloadsSelectionDecoration(context: Context) : AbstractSelectionItemDecoration() {
+
+	private val paint = Paint(Paint.ANTI_ALIAS_FLAG)
+	private val checkIcon = ContextCompat.getDrawable(context, materialR.drawable.ic_mtrl_checked_circle)
+	private val iconOffset = context.resources.getDimensionPixelOffset(R.dimen.card_indicator_offset)
+	private val iconSize = context.resources.getDimensionPixelOffset(R.dimen.card_indicator_size)
+	private val strokeColor = context.getThemeColor(materialR.attr.colorPrimary, Color.RED)
+	private val fillColor = ColorUtils.setAlphaComponent(
+		ColorUtils.blendARGB(strokeColor, context.getThemeColor(materialR.attr.colorSurface), 0.8f),
+		0x74,
+	)
+	private val defaultRadius = context.resources.getDimension(R.dimen.list_selector_corner)
+
+	init {
+		hasBackground = false
+		hasForeground = true
+		isIncludeDecorAndMargins = false
+
+		paint.strokeWidth = context.resources.getDimension(R.dimen.selection_stroke_width)
+		checkIcon?.setTint(strokeColor)
+	}
+
+	override fun getItemId(parent: RecyclerView, child: View): Long {
+		val holder = parent.getChildViewHolder(child) ?: return NO_ID
+		val item = holder.getItem(DownloadItemModel::class.java) ?: return NO_ID
+		return item.id.mostSignificantBits
+	}
+
+	override fun onDrawForeground(
+		canvas: Canvas,
+		parent: RecyclerView,
+		child: View,
+		bounds: RectF,
+		state: RecyclerView.State,
+	) {
+		val isCard = child is CardView
+		val radius = (child as? CardView)?.radius ?: defaultRadius
+		paint.color = fillColor
+		paint.style = Paint.Style.FILL
+		canvas.drawRoundRect(bounds, radius, radius, paint)
+		paint.color = strokeColor
+		paint.style = Paint.Style.STROKE
+		canvas.drawRoundRect(bounds, radius, radius, paint)
+		if (isCard) {
+			checkIcon?.run {
+				setBounds(
+					(bounds.right - iconSize - iconOffset).toInt(),
+					(bounds.top + iconOffset).toInt(),
+					(bounds.right - iconOffset).toInt(),
+					(bounds.top + iconOffset + iconSize).toInt(),
+				)
+				draw(canvas)
+			}
+		}
+	}
+}

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

@@ -0,0 +1,246 @@
+package org.koitharu.kotatsu.download.ui.list
+
+import androidx.collection.LongSparseArray
+import androidx.collection.getOrElse
+import androidx.collection.set
+import androidx.lifecycle.viewModelScope
+import androidx.work.Data
+import androidx.work.WorkInfo
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.SharingStarted
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.mapLatest
+import kotlinx.coroutines.flow.stateIn
+import kotlinx.coroutines.plus
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.base.domain.MangaDataRepository
+import org.koitharu.kotatsu.base.ui.BaseViewModel
+import org.koitharu.kotatsu.base.ui.util.ReversibleAction
+import org.koitharu.kotatsu.core.ui.DateTimeAgo
+import org.koitharu.kotatsu.download.domain.DownloadState
+import org.koitharu.kotatsu.download.ui.worker.DownloadWorker
+import org.koitharu.kotatsu.list.ui.model.EmptyState
+import org.koitharu.kotatsu.list.ui.model.ListModel
+import org.koitharu.kotatsu.list.ui.model.LoadingState
+import org.koitharu.kotatsu.parsers.model.Manga
+import org.koitharu.kotatsu.parsers.util.mapToSet
+import org.koitharu.kotatsu.utils.SingleLiveEvent
+import org.koitharu.kotatsu.utils.asFlowLiveData
+import org.koitharu.kotatsu.utils.ext.daysDiff
+import java.util.Date
+import java.util.UUID
+import java.util.concurrent.TimeUnit
+import javax.inject.Inject
+
+@HiltViewModel
+class DownloadsViewModel @Inject constructor(
+	private val workScheduler: DownloadWorker.Scheduler,
+	private val mangaDataRepository: MangaDataRepository,
+) : BaseViewModel() {
+
+	private val mangaCache = LongSparseArray<Manga>()
+	private val cacheMutex = Mutex()
+	private val works = workScheduler.observeWorks()
+		.mapLatest { it.toDownloadsList() }
+		.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, null)
+
+	val onActionDone = SingleLiveEvent<ReversibleAction>()
+
+	val items = works.map {
+		it?.toUiList() ?: listOf(LoadingState)
+	}.asFlowLiveData(viewModelScope.coroutineContext + Dispatchers.Default, listOf(LoadingState))
+
+	val hasPausedWorks = works.map {
+		it?.any { x -> x.canResume } == true
+	}.asFlowLiveData(viewModelScope.coroutineContext + Dispatchers.Default, false)
+
+	val hasActiveWorks = works.map {
+		it?.any { x -> x.canPause } == true
+	}.asFlowLiveData(viewModelScope.coroutineContext + Dispatchers.Default, false)
+
+	val hasCancellableWorks = works.map {
+		it?.any { x -> !x.workState.isFinished } == true
+	}.asFlowLiveData(viewModelScope.coroutineContext + Dispatchers.Default, false)
+
+	fun cancel(id: UUID) {
+		launchJob(Dispatchers.Default) {
+			workScheduler.cancel(id)
+		}
+	}
+
+	fun cancel(ids: Set<Long>) {
+		launchJob(Dispatchers.Default) {
+			val snapshot = works.value ?: return@launchJob
+			for (work in snapshot) {
+				if (work.id.mostSignificantBits in ids) {
+					workScheduler.cancel(work.id)
+				}
+			}
+			onActionDone.emitCall(ReversibleAction(R.string.downloads_cancelled, null))
+		}
+	}
+
+	fun cancelAll() {
+		launchJob(Dispatchers.Default) {
+			workScheduler.cancelAll()
+			onActionDone.emitCall(ReversibleAction(R.string.downloads_cancelled, null))
+		}
+	}
+
+	fun pause(ids: Set<Long>) {
+		val snapshot = works.value ?: return
+		for (work in snapshot) {
+			if (work.id.mostSignificantBits in ids) {
+				workScheduler.pause(work.id)
+			}
+		}
+		onActionDone.call(ReversibleAction(R.string.downloads_paused, null))
+	}
+
+	fun pauseAll() {
+		val snapshot = works.value ?: return
+		var isPaused = false
+		for (work in snapshot) {
+			if (work.canPause) {
+				workScheduler.pause(work.id)
+				isPaused = true
+			}
+		}
+		if (isPaused) {
+			onActionDone.call(ReversibleAction(R.string.downloads_paused, null))
+		}
+	}
+
+	fun resumeAll() {
+		val snapshot = works.value ?: return
+		var isResumed = false
+		for (work in snapshot) {
+			if (work.workState == WorkInfo.State.RUNNING && work.isPaused) {
+				workScheduler.resume(work.id)
+				isResumed = true
+			}
+		}
+		if (isResumed) {
+			onActionDone.call(ReversibleAction(R.string.downloads_resumed, null))
+		}
+	}
+
+	fun resume(ids: Set<Long>) {
+		val snapshot = works.value ?: return
+		for (work in snapshot) {
+			if (work.id.mostSignificantBits in ids) {
+				workScheduler.resume(work.id)
+			}
+		}
+		onActionDone.call(ReversibleAction(R.string.downloads_resumed, null))
+	}
+
+	fun remove(ids: Set<Long>) {
+		launchJob(Dispatchers.Default) {
+			val snapshot = works.value ?: return@launchJob
+			for (work in snapshot) {
+				if (work.id.mostSignificantBits in ids) {
+					workScheduler.delete(work.id)
+				}
+			}
+			onActionDone.emitCall(ReversibleAction(R.string.downloads_removed, null))
+		}
+	}
+
+	fun removeCompleted() {
+		launchJob(Dispatchers.Default) {
+			workScheduler.removeCompleted()
+			onActionDone.emitCall(ReversibleAction(R.string.downloads_removed, null))
+		}
+	}
+
+	fun snapshot(ids: Set<Long>): Collection<DownloadItemModel> {
+		return works.value?.filterTo(ArrayList(ids.size)) { x -> x.id.mostSignificantBits in ids }.orEmpty()
+	}
+
+	fun allIds(): Set<Long> = works.value?.mapToSet {
+		it.id.mostSignificantBits
+	} ?: emptySet()
+
+	private suspend fun List<WorkInfo>.toDownloadsList(): List<DownloadItemModel> {
+		if (isEmpty()) {
+			return emptyList()
+		}
+		val list = mapNotNullTo(ArrayList(size)) { it.toUiModel() }
+		list.sortByDescending { it.timestamp }
+		return list
+	}
+
+	private fun List<DownloadItemModel>.toUiList(): List<ListModel> {
+		if (isEmpty()) {
+			return emptyStateList()
+		}
+		val destination = ArrayList<ListModel>((size * 1.4).toInt())
+		var prevDate: DateTimeAgo? = null
+		for (item in this) {
+			val date = timeAgo(item.timestamp)
+			if (prevDate != date) {
+				destination += date
+			}
+			prevDate = date
+			destination += item
+		}
+		return destination
+	}
+
+	private suspend fun WorkInfo.toUiModel(): DownloadItemModel? {
+		val workData = if (outputData == Data.EMPTY) progress else outputData
+		val mangaId = DownloadState.getMangaId(workData)
+		if (mangaId == 0L) return null
+		val manga = getManga(mangaId) ?: return null
+		return DownloadItemModel(
+			id = id,
+			workState = state,
+			manga = manga,
+			error = DownloadState.getError(workData),
+			isIndeterminate = DownloadState.isIndeterminate(workData),
+			isPaused = DownloadState.isPaused(workData),
+			max = DownloadState.getMax(workData),
+			progress = DownloadState.getProgress(workData),
+			eta = DownloadState.getEta(workData),
+			timestamp = DownloadState.getTimestamp(workData),
+			totalChapters = DownloadState.getDownloadedChapters(workData).size,
+		)
+	}
+
+	private fun timeAgo(date: Date): DateTimeAgo {
+		val diff = (System.currentTimeMillis() - date.time).coerceAtLeast(0L)
+		val diffMinutes = TimeUnit.MILLISECONDS.toMinutes(diff).toInt()
+		val diffDays = -date.daysDiff(System.currentTimeMillis())
+		return when {
+			diffMinutes < 3 -> DateTimeAgo.JustNow
+			diffDays < 1 -> DateTimeAgo.Today
+			diffDays == 1 -> DateTimeAgo.Yesterday
+			diffDays < 6 -> DateTimeAgo.DaysAgo(diffDays)
+			else -> DateTimeAgo.Absolute(date)
+		}
+	}
+
+	private fun emptyStateList() = listOf(
+		EmptyState(
+			icon = R.drawable.ic_empty_common,
+			textPrimary = R.string.text_downloads_list_holder,
+			textSecondary = 0,
+			actionStringRes = 0,
+		),
+	)
+
+	private suspend fun getManga(mangaId: Long): Manga? {
+		mangaCache[mangaId]?.let {
+			return it
+		}
+		return cacheMutex.withLock {
+			mangaCache.getOrElse(mangaId) {
+				mangaDataRepository.findMangaById(mangaId)?.also { mangaCache[mangaId] = it } ?: return null
+			}
+		}
+	}
+}

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

@@ -1,356 +0,0 @@
-package org.koitharu.kotatsu.download.ui.service
-
-import android.app.Notification
-import android.app.NotificationChannel
-import android.app.NotificationManager
-import android.app.PendingIntent
-import android.content.Context
-import android.os.Build
-import android.text.format.DateUtils
-import android.util.SparseArray
-import androidx.core.app.NotificationCompat
-import androidx.core.app.NotificationManagerCompat
-import androidx.core.app.PendingIntentCompat
-import androidx.core.content.ContextCompat
-import androidx.core.graphics.drawable.toBitmap
-import androidx.core.text.HtmlCompat
-import androidx.core.text.htmlEncode
-import androidx.core.text.parseAsHtml
-import androidx.core.util.forEach
-import androidx.core.util.isNotEmpty
-import androidx.core.util.size
-import com.google.android.material.R as materialR
-import org.koitharu.kotatsu.R
-import org.koitharu.kotatsu.details.ui.DetailsActivity
-import org.koitharu.kotatsu.download.domain.DownloadState
-import org.koitharu.kotatsu.download.ui.DownloadsActivity
-import org.koitharu.kotatsu.parsers.model.Manga
-import org.koitharu.kotatsu.parsers.model.MangaSource
-import org.koitharu.kotatsu.parsers.util.ellipsize
-import org.koitharu.kotatsu.parsers.util.format
-import org.koitharu.kotatsu.search.ui.MangaListActivity
-import org.koitharu.kotatsu.utils.ext.getDisplayMessage
-
-class DownloadNotification(private val context: Context) {
-
-	private val manager = context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
-	private val states = SparseArray<DownloadState>()
-	private val groupBuilder = NotificationCompat.Builder(context, CHANNEL_ID)
-
-	private val queueIntent = PendingIntentCompat.getActivity(
-		context,
-		REQUEST_QUEUE,
-		DownloadsActivity.newIntent(context),
-		0,
-		false,
-	)
-
-	private val localListIntent = PendingIntentCompat.getActivity(
-		context,
-		REQUEST_LIST_LOCAL,
-		MangaListActivity.newIntent(context, MangaSource.LOCAL),
-		0,
-		false,
-	)
-
-	init {
-		groupBuilder.setOnlyAlertOnce(true)
-		groupBuilder.setDefaults(0)
-		groupBuilder.color = ContextCompat.getColor(context, R.color.blue_primary)
-		groupBuilder.foregroundServiceBehavior = NotificationCompat.FOREGROUND_SERVICE_IMMEDIATE
-		groupBuilder.setSilent(true)
-		groupBuilder.setGroup(GROUP_ID)
-		groupBuilder.setGroupAlertBehavior(NotificationCompat.GROUP_ALERT_CHILDREN)
-		groupBuilder.setGroupSummary(true)
-		groupBuilder.setContentTitle(context.getString(R.string.downloading_manga))
-	}
-
-	fun buildGroupNotification(): Notification {
-		val style = NotificationCompat.InboxStyle(groupBuilder)
-		var progress = 0f
-		var isAllDone = true
-		var isInProgress = false
-		groupBuilder.setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
-		states.forEach { _, state ->
-			if (state.manga.isNsfw) {
-				groupBuilder.setVisibility(NotificationCompat.VISIBILITY_PRIVATE)
-			}
-			val summary = when (state) {
-				is DownloadState.Cancelled -> {
-					progress++
-					context.getString(R.string.cancelling_)
-				}
-
-				is DownloadState.Done -> {
-					progress++
-					context.getString(R.string.download_complete)
-				}
-
-				is DownloadState.Error -> {
-					isAllDone = false
-					context.getString(R.string.error)
-				}
-
-				is DownloadState.PostProcessing -> {
-					progress++
-					isInProgress = true
-					isAllDone = false
-					context.getString(R.string.processing_)
-				}
-
-				is DownloadState.Preparing -> {
-					isAllDone = false
-					isInProgress = true
-					context.getString(R.string.preparing_)
-				}
-
-				is DownloadState.Progress -> {
-					isAllDone = false
-					isInProgress = true
-					progress += state.percent
-					context.getString(R.string.percent_string_pattern, (state.percent * 100).format())
-				}
-
-				is DownloadState.Queued -> {
-					isAllDone = false
-					isInProgress = true
-					context.getString(R.string.queued)
-				}
-			}
-			style.addLine(
-				context.getString(
-					R.string.download_summary_pattern,
-					state.manga.title.ellipsize(16).htmlEncode(),
-					summary.htmlEncode(),
-				).parseAsHtml(HtmlCompat.FROM_HTML_MODE_LEGACY),
-			)
-		}
-		progress = if (isInProgress) {
-			progress / states.size.toFloat()
-		} else {
-			1f
-		}
-		style.setBigContentTitle(
-			context.getString(if (isAllDone) R.string.download_complete else R.string.downloading_manga),
-		)
-		groupBuilder.setContentText(context.resources.getQuantityString(R.plurals.items, states.size, states.size()))
-		groupBuilder.setNumber(states.size)
-		groupBuilder.setSmallIcon(
-			if (isInProgress) android.R.drawable.stat_sys_download else android.R.drawable.stat_sys_download_done,
-		)
-		groupBuilder.setContentIntent(if (isAllDone) localListIntent else queueIntent)
-		groupBuilder.setAutoCancel(isAllDone)
-		when (progress) {
-			1f -> groupBuilder.setProgress(0, 0, false)
-			0f -> groupBuilder.setProgress(1, 0, true)
-			else -> groupBuilder.setProgress(100, (progress * 100f).toInt(), false)
-		}
-		return groupBuilder.build()
-	}
-
-	fun detach() {
-		if (states.isNotEmpty()) {
-			val notification = buildGroupNotification()
-			manager.notify(ID_GROUP_DETACHED, notification)
-		}
-		manager.cancel(ID_GROUP)
-	}
-
-	fun newItem(startId: Int) = Item(startId)
-
-	inner class Item(
-		private val startId: Int,
-	) {
-
-		private val builder = NotificationCompat.Builder(context, CHANNEL_ID)
-		private val cancelAction = NotificationCompat.Action(
-			materialR.drawable.material_ic_clear_black_24dp,
-			context.getString(android.R.string.cancel),
-			PendingIntentCompat.getBroadcast(
-				context,
-				startId * 2,
-				DownloadService.getCancelIntent(startId),
-				PendingIntent.FLAG_CANCEL_CURRENT,
-				false,
-			),
-		)
-		private val retryAction = NotificationCompat.Action(
-			R.drawable.ic_restart_black,
-			context.getString(R.string.try_again),
-			PendingIntentCompat.getBroadcast(
-				context,
-				startId * 2 + 1,
-				DownloadService.getResumeIntent(startId),
-				PendingIntent.FLAG_CANCEL_CURRENT,
-				false,
-			),
-		)
-
-		init {
-			builder.setOnlyAlertOnce(true)
-			builder.setDefaults(0)
-			builder.color = ContextCompat.getColor(context, R.color.blue_primary)
-			builder.foregroundServiceBehavior = NotificationCompat.FOREGROUND_SERVICE_IMMEDIATE
-			builder.setSilent(true)
-			builder.setGroup(GROUP_ID)
-			builder.setGroupAlertBehavior(NotificationCompat.GROUP_ALERT_CHILDREN)
-		}
-
-		fun notify(state: DownloadState, timeLeft: Long) {
-			builder.setContentTitle(state.manga.title)
-			builder.setContentText(context.getString(R.string.manga_downloading_))
-			builder.setProgress(1, 0, true)
-			builder.setSmallIcon(android.R.drawable.stat_sys_download)
-			builder.setContentIntent(queueIntent)
-			builder.setStyle(null)
-			builder.setLargeIcon(state.cover?.toBitmap())
-			builder.clearActions()
-			builder.setSubText(null)
-			builder.setShowWhen(false)
-			builder.setVisibility(
-				if (state.manga.isNsfw) {
-					NotificationCompat.VISIBILITY_PRIVATE
-				} else {
-					NotificationCompat.VISIBILITY_PUBLIC
-				},
-			)
-			when (state) {
-				is DownloadState.Cancelled -> {
-					builder.setProgress(1, 0, true)
-					builder.setContentText(context.getString(R.string.cancelling_))
-					builder.setContentIntent(null)
-					builder.setStyle(null)
-					builder.setOngoing(true)
-					builder.priority = NotificationCompat.PRIORITY_DEFAULT
-				}
-
-				is DownloadState.Done -> {
-					builder.setProgress(0, 0, false)
-					builder.setContentText(context.getString(R.string.download_complete))
-					builder.setContentIntent(createMangaIntent(context, state.localManga))
-					builder.setAutoCancel(true)
-					builder.setSmallIcon(android.R.drawable.stat_sys_download_done)
-					builder.setCategory(null)
-					builder.setStyle(null)
-					builder.setOngoing(false)
-					builder.setShowWhen(true)
-					builder.setWhen(System.currentTimeMillis())
-					builder.priority = NotificationCompat.PRIORITY_DEFAULT
-				}
-
-				is DownloadState.Error -> {
-					val message = state.error.getDisplayMessage(context.resources)
-					builder.setProgress(0, 0, false)
-					builder.setSmallIcon(android.R.drawable.stat_notify_error)
-					builder.setSubText(context.getString(R.string.error))
-					builder.setContentText(message)
-					builder.setAutoCancel(!state.canRetry)
-					builder.setOngoing(state.canRetry)
-					builder.setCategory(NotificationCompat.CATEGORY_ERROR)
-					builder.setShowWhen(true)
-					builder.setWhen(System.currentTimeMillis())
-					builder.setStyle(NotificationCompat.BigTextStyle().bigText(message))
-					if (state.canRetry) {
-						builder.addAction(cancelAction)
-						builder.addAction(retryAction)
-					}
-					builder.priority = NotificationCompat.PRIORITY_DEFAULT
-				}
-
-				is DownloadState.PostProcessing -> {
-					builder.setProgress(1, 0, true)
-					builder.setContentText(context.getString(R.string.processing_))
-					builder.setStyle(null)
-					builder.setOngoing(true)
-					builder.priority = NotificationCompat.PRIORITY_DEFAULT
-				}
-
-				is DownloadState.Queued -> {
-					builder.setProgress(0, 0, false)
-					builder.setContentText(context.getString(R.string.queued))
-					builder.setStyle(null)
-					builder.setOngoing(true)
-					builder.addAction(cancelAction)
-					builder.priority = NotificationCompat.PRIORITY_LOW
-				}
-
-				is DownloadState.Preparing -> {
-					builder.setProgress(1, 0, true)
-					builder.setContentText(context.getString(R.string.preparing_))
-					builder.setStyle(null)
-					builder.setOngoing(true)
-					builder.addAction(cancelAction)
-					builder.priority = NotificationCompat.PRIORITY_DEFAULT
-				}
-
-				is DownloadState.Progress -> {
-					builder.setProgress(state.max, state.progress, false)
-					val percent = context.getString(R.string.percent_string_pattern, (state.percent * 100).format())
-					if (timeLeft > 0L) {
-						val eta = DateUtils.getRelativeTimeSpanString(timeLeft, 0L, DateUtils.SECOND_IN_MILLIS)
-						builder.setContentText(eta)
-						builder.setSubText(percent)
-					} else {
-						builder.setContentText(percent)
-					}
-					builder.setCategory(NotificationCompat.CATEGORY_PROGRESS)
-					builder.setStyle(null)
-					builder.setOngoing(true)
-					builder.addAction(cancelAction)
-					builder.priority = NotificationCompat.PRIORITY_DEFAULT
-				}
-			}
-			val notification = builder.build()
-			states.append(startId, state)
-			updateGroupNotification()
-			manager.notify(TAG, startId, notification)
-		}
-
-		fun dismiss() {
-			manager.cancel(TAG, startId)
-			states.remove(startId)
-			updateGroupNotification()
-		}
-	}
-
-	private fun updateGroupNotification() {
-		val notification = buildGroupNotification()
-		manager.notify(ID_GROUP, notification)
-	}
-
-	private fun createMangaIntent(context: Context, manga: Manga) = PendingIntentCompat.getActivity(
-		context,
-		manga.hashCode(),
-		DetailsActivity.newIntent(context, manga),
-		PendingIntent.FLAG_CANCEL_CURRENT,
-		false,
-	)
-
-	companion object {
-
-		private const val TAG = "download"
-		private const val CHANNEL_ID = "download"
-		private const val GROUP_ID = "downloads"
-		private const val REQUEST_QUEUE = 6
-		private const val REQUEST_LIST_LOCAL = 7
-		const val ID_GROUP = 9999
-		private const val ID_GROUP_DETACHED = 9998
-
-		fun createChannel(context: Context) {
-			if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-				val manager = NotificationManagerCompat.from(context)
-				if (manager.getNotificationChannel(CHANNEL_ID) == null) {
-					val channel = NotificationChannel(
-						CHANNEL_ID,
-						context.getString(R.string.downloads),
-						NotificationManager.IMPORTANCE_LOW,
-					)
-					channel.enableVibration(false)
-					channel.enableLights(false)
-					channel.setSound(null, null)
-					manager.createNotificationChannel(channel)
-				}
-			}
-		}
-	}
-}

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

@@ -1,262 +0,0 @@
-package org.koitharu.kotatsu.download.ui.service
-
-import android.app.DownloadManager.ACTION_DOWNLOAD_COMPLETE
-import android.content.BroadcastReceiver
-import android.content.Context
-import android.content.Intent
-import android.content.IntentFilter
-import android.os.Binder
-import android.os.IBinder
-import android.os.PowerManager
-import android.view.View
-import androidx.annotation.MainThread
-import androidx.core.app.ServiceCompat
-import androidx.core.content.ContextCompat
-import androidx.lifecycle.DefaultLifecycleObserver
-import androidx.lifecycle.LifecycleOwner
-import androidx.lifecycle.lifecycleScope
-import com.google.android.material.dialog.MaterialAlertDialogBuilder
-import com.google.android.material.snackbar.Snackbar
-import dagger.hilt.android.AndroidEntryPoint
-import kotlinx.coroutines.flow.Flow
-import kotlinx.coroutines.flow.MutableStateFlow
-import kotlinx.coroutines.flow.asStateFlow
-import kotlinx.coroutines.flow.launchIn
-import kotlinx.coroutines.flow.onEach
-import kotlinx.coroutines.flow.transformWhile
-import kotlinx.coroutines.launch
-import org.koitharu.kotatsu.BuildConfig
-import org.koitharu.kotatsu.R
-import org.koitharu.kotatsu.base.ui.BaseService
-import org.koitharu.kotatsu.core.model.parcelable.ParcelableManga
-import org.koitharu.kotatsu.download.domain.DownloadManager
-import org.koitharu.kotatsu.download.domain.DownloadState
-import org.koitharu.kotatsu.download.ui.DownloadsActivity
-import org.koitharu.kotatsu.parsers.model.Manga
-import org.koitharu.kotatsu.utils.ext.getParcelableExtraCompat
-import org.koitharu.kotatsu.utils.ext.throttle
-import org.koitharu.kotatsu.utils.progress.PausingProgressJob
-import org.koitharu.kotatsu.utils.progress.ProgressJob
-import org.koitharu.kotatsu.utils.progress.TimeLeftEstimator
-import java.util.concurrent.TimeUnit
-import javax.inject.Inject
-import kotlin.collections.set
-
-@AndroidEntryPoint
-class DownloadService : BaseService() {
-
-	private lateinit var downloadNotification: DownloadNotification
-	private lateinit var wakeLock: PowerManager.WakeLock
-
-	@Inject
-	lateinit var downloadManager: DownloadManager
-
-	private val jobs = LinkedHashMap<Int, PausingProgressJob<DownloadState>>()
-	private val jobCount = MutableStateFlow(0)
-	private val controlReceiver = ControlReceiver()
-
-	override fun onCreate() {
-		super.onCreate()
-		downloadNotification = DownloadNotification(this)
-		wakeLock = (applicationContext.getSystemService(Context.POWER_SERVICE) as PowerManager)
-			.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "kotatsu:downloading")
-		wakeLock.acquire(TimeUnit.HOURS.toMillis(8))
-		DownloadNotification.createChannel(this)
-		startForeground(DownloadNotification.ID_GROUP, downloadNotification.buildGroupNotification())
-		val intentFilter = IntentFilter()
-		intentFilter.addAction(ACTION_DOWNLOAD_CANCEL)
-		intentFilter.addAction(ACTION_DOWNLOAD_RESUME)
-		ContextCompat.registerReceiver(this, controlReceiver, intentFilter, ContextCompat.RECEIVER_NOT_EXPORTED)
-	}
-
-	override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
-		super.onStartCommand(intent, flags, startId)
-		val manga = intent?.getParcelableExtraCompat<ParcelableManga>(EXTRA_MANGA)?.manga
-		val chapters = intent?.getLongArrayExtra(EXTRA_CHAPTERS_IDS)
-		return if (manga != null) {
-			jobs[startId] = downloadManga(startId, manga, chapters)
-			jobCount.value = jobs.size
-			START_REDELIVER_INTENT
-		} else {
-			stopSelfIfIdle()
-			START_NOT_STICKY
-		}
-	}
-
-	override fun onBind(intent: Intent): IBinder {
-		super.onBind(intent)
-		return DownloadBinder(this)
-	}
-
-	override fun onDestroy() {
-		unregisterReceiver(controlReceiver)
-		if (wakeLock.isHeld) {
-			wakeLock.release()
-		}
-		super.onDestroy()
-	}
-
-	private fun downloadManga(
-		startId: Int,
-		manga: Manga,
-		chaptersIds: LongArray?,
-	): PausingProgressJob<DownloadState> {
-		val job = downloadManager.downloadManga(manga, chaptersIds, startId)
-		listenJob(job)
-		return job
-	}
-
-	private fun listenJob(job: ProgressJob<DownloadState>) {
-		lifecycleScope.launch {
-			val startId = job.progressValue.startId
-			val notificationItem = downloadNotification.newItem(startId)
-			try {
-				val timeLeftEstimator = TimeLeftEstimator()
-				notificationItem.notify(job.progressValue, -1L)
-				job.progressAsFlow()
-					.onEach { state ->
-						if (state is DownloadState.Progress) {
-							timeLeftEstimator.tick(value = state.progress, total = state.max)
-						} else {
-							timeLeftEstimator.emptyTick()
-						}
-					}
-					.throttle { state -> if (state is DownloadState.Progress) 400L else 0L }
-					.whileActive()
-					.collect { state ->
-						val timeLeft = timeLeftEstimator.getEstimatedTimeLeft()
-						notificationItem.notify(state, timeLeft)
-					}
-				job.join()
-			} finally {
-				(job.progressValue as? DownloadState.Done)?.let {
-					sendBroadcast(
-						Intent(ACTION_DOWNLOAD_COMPLETE)
-							.putExtra(EXTRA_MANGA, ParcelableManga(it.localManga, withChapters = false)),
-					)
-				}
-				if (job.isCancelled) {
-					notificationItem.dismiss()
-					if (jobs.remove(startId) != null) {
-						jobCount.value = jobs.size
-					}
-				} else {
-					notificationItem.notify(job.progressValue, -1L)
-				}
-			}
-		}.invokeOnCompletion {
-			stopSelfIfIdle()
-		}
-	}
-
-	private fun Flow<DownloadState>.whileActive(): Flow<DownloadState> = transformWhile { state ->
-		emit(state)
-		!state.isTerminal
-	}
-
-	@MainThread
-	private fun stopSelfIfIdle() {
-		if (jobs.any { (_, job) -> job.isActive }) {
-			return
-		}
-		downloadNotification.detach()
-		ServiceCompat.stopForeground(this, ServiceCompat.STOP_FOREGROUND_REMOVE)
-		stopSelf()
-	}
-
-	inner class ControlReceiver : BroadcastReceiver() {
-
-		override fun onReceive(context: Context, intent: Intent?) {
-			when (intent?.action) {
-				ACTION_DOWNLOAD_CANCEL -> {
-					val cancelId = intent.getIntExtra(EXTRA_CANCEL_ID, 0)
-					jobs[cancelId]?.cancel()
-				}
-
-				ACTION_DOWNLOAD_RESUME -> {
-					val cancelId = intent.getIntExtra(EXTRA_CANCEL_ID, 0)
-					jobs[cancelId]?.resume()
-				}
-			}
-		}
-	}
-
-	class DownloadBinder(service: DownloadService) : Binder(), DefaultLifecycleObserver {
-
-		private var downloadsStateFlow = MutableStateFlow<List<PausingProgressJob<DownloadState>>>(emptyList())
-
-		init {
-			service.lifecycle.addObserver(this)
-			service.jobCount.onEach {
-				downloadsStateFlow.value = service.jobs.values.toList()
-			}.launchIn(service.lifecycleScope)
-		}
-
-		override fun onDestroy(owner: LifecycleOwner) {
-			owner.lifecycle.removeObserver(this)
-			downloadsStateFlow.value = emptyList()
-			super.onDestroy(owner)
-		}
-
-		val downloads
-			get() = downloadsStateFlow.asStateFlow()
-	}
-
-	companion object {
-
-		private const val ACTION_DOWNLOAD_CANCEL = "${BuildConfig.APPLICATION_ID}.action.ACTION_DOWNLOAD_CANCEL"
-		private const val ACTION_DOWNLOAD_RESUME = "${BuildConfig.APPLICATION_ID}.action.ACTION_DOWNLOAD_RESUME"
-
-		const val EXTRA_MANGA = "manga"
-		private const val EXTRA_CHAPTERS_IDS = "chapters_ids"
-		private const val EXTRA_CANCEL_ID = "cancel_id"
-
-		fun start(view: View, manga: Manga, chaptersIds: Collection<Long>? = null) {
-			if (chaptersIds?.isEmpty() == true) {
-				return
-			}
-			val intent = Intent(view.context, DownloadService::class.java)
-			intent.putExtra(EXTRA_MANGA, ParcelableManga(manga, withChapters = false))
-			if (chaptersIds != null) {
-				intent.putExtra(EXTRA_CHAPTERS_IDS, chaptersIds.toLongArray())
-			}
-			ContextCompat.startForegroundService(view.context, intent)
-			showStartedSnackbar(view)
-		}
-
-		fun start(view: View, manga: Collection<Manga>) {
-			if (manga.isEmpty()) {
-				return
-			}
-			for (item in manga) {
-				val intent = Intent(view.context, DownloadService::class.java)
-				intent.putExtra(EXTRA_MANGA, ParcelableManga(item, withChapters = false))
-				ContextCompat.startForegroundService(view.context, intent)
-			}
-			showStartedSnackbar(view)
-		}
-
-		fun confirmAndStart(view: View, items: Set<Manga>) {
-			MaterialAlertDialogBuilder(view.context)
-				.setTitle(R.string.save_manga)
-				.setMessage(R.string.batch_manga_save_confirm)
-				.setNegativeButton(android.R.string.cancel, null)
-				.setPositiveButton(R.string.save) { _, _ ->
-					start(view, items)
-				}.show()
-		}
-
-		fun getCancelIntent(startId: Int) = Intent(ACTION_DOWNLOAD_CANCEL)
-			.putExtra(EXTRA_CANCEL_ID, startId)
-
-		fun getResumeIntent(startId: Int) = Intent(ACTION_DOWNLOAD_RESUME)
-			.putExtra(EXTRA_CANCEL_ID, startId)
-
-		private fun showStartedSnackbar(view: View) {
-			Snackbar.make(view, R.string.download_started, Snackbar.LENGTH_LONG)
-				.setAction(R.string.details) {
-					it.context.startActivity(DownloadsActivity.newIntent(it.context))
-				}.show()
-		}
-	}
-}

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

@@ -0,0 +1,270 @@
+package org.koitharu.kotatsu.download.ui.worker
+
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.content.Context
+import android.graphics.drawable.Drawable
+import android.os.Build
+import android.text.format.DateUtils
+import androidx.core.app.NotificationCompat
+import androidx.core.app.NotificationManagerCompat
+import androidx.core.app.PendingIntentCompat
+import androidx.core.graphics.drawable.toBitmap
+import androidx.work.WorkManager
+import coil.ImageLoader
+import coil.request.ImageRequest
+import coil.size.Scale
+import dagger.assisted.Assisted
+import dagger.assisted.AssistedFactory
+import dagger.assisted.AssistedInject
+import dagger.hilt.android.qualifiers.ApplicationContext
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.details.ui.DetailsActivity
+import org.koitharu.kotatsu.download.domain.DownloadState
+import org.koitharu.kotatsu.download.ui.list.DownloadsActivity
+import org.koitharu.kotatsu.parsers.model.Manga
+import org.koitharu.kotatsu.parsers.model.MangaSource
+import org.koitharu.kotatsu.parsers.util.format
+import org.koitharu.kotatsu.parsers.util.runCatchingCancellable
+import org.koitharu.kotatsu.search.ui.MangaListActivity
+import org.koitharu.kotatsu.utils.ext.getDrawableOrThrow
+import org.koitharu.kotatsu.utils.ext.printStackTraceDebug
+import java.util.UUID
+import com.google.android.material.R as materialR
+
+private const val CHANNEL_ID = "download"
+private const val GROUP_ID = "downloads"
+
+class DownloadNotificationFactory @AssistedInject constructor(
+	@ApplicationContext private val context: Context,
+	private val coil: ImageLoader,
+	@Assisted private val uuid: UUID,
+) {
+
+	private val covers = HashMap<Manga, Drawable>()
+	private val builder = NotificationCompat.Builder(context, CHANNEL_ID)
+	private val mutex = Mutex()
+
+	private val coverWidth = context.resources.getDimensionPixelSize(
+		androidx.core.R.dimen.compat_notification_large_icon_max_width,
+	)
+	private val coverHeight = context.resources.getDimensionPixelSize(
+		androidx.core.R.dimen.compat_notification_large_icon_max_height,
+	)
+	private val queueIntent = PendingIntentCompat.getActivity(
+		context,
+		0,
+		DownloadsActivity.newIntent(context),
+		0,
+		false,
+	)
+
+	private val actionCancel by lazy {
+		NotificationCompat.Action(
+			materialR.drawable.material_ic_clear_black_24dp,
+			context.getString(android.R.string.cancel),
+			WorkManager.getInstance(context).createCancelPendingIntent(uuid),
+		)
+	}
+
+	private val actionPause by lazy {
+		NotificationCompat.Action(
+			R.drawable.ic_action_pause,
+			context.getString(R.string.pause),
+			PausingReceiver.createPausePendingIntent(context, uuid),
+		)
+	}
+
+	private val actionResume by lazy {
+		NotificationCompat.Action(
+			R.drawable.ic_action_resume,
+			context.getString(R.string.resume),
+			PausingReceiver.createResumePendingIntent(context, uuid),
+		)
+	}
+
+	init {
+		createChannel()
+		builder.setOnlyAlertOnce(true)
+		builder.setDefaults(0)
+		builder.foregroundServiceBehavior = NotificationCompat.FOREGROUND_SERVICE_IMMEDIATE
+		builder.setSilent(true)
+		builder.setGroup(GROUP_ID)
+		builder.setGroupAlertBehavior(NotificationCompat.GROUP_ALERT_CHILDREN)
+		builder.priority = NotificationCompat.PRIORITY_DEFAULT
+	}
+
+	suspend fun create(state: DownloadState?): Notification = mutex.withLock {
+		if (state == null) {
+			builder.setContentTitle(context.getString(R.string.manga_downloading_))
+			builder.setContentText(context.getString(R.string.preparing_))
+		} else {
+			builder.setContentTitle(state.manga.title)
+			builder.setContentText(context.getString(R.string.manga_downloading_))
+		}
+		builder.setProgress(1, 0, true)
+		builder.setSmallIcon(android.R.drawable.stat_sys_download)
+		builder.setContentIntent(queueIntent)
+		builder.setStyle(null)
+		builder.setLargeIcon(if (state != null) getCover(state.manga)?.toBitmap() else null)
+		builder.clearActions()
+		builder.setSubText(null)
+		builder.setShowWhen(false)
+		builder.setVisibility(
+			if (state != null && state.manga.isNsfw) {
+				NotificationCompat.VISIBILITY_PRIVATE
+			} else {
+				NotificationCompat.VISIBILITY_PUBLIC
+			},
+		)
+		when {
+			state == null -> Unit
+			state.localManga != null -> { // downloaded, final state
+				builder.setProgress(0, 0, false)
+				builder.setContentText(context.getString(R.string.download_complete))
+				builder.setContentIntent(createMangaIntent(context, state.localManga.manga))
+				builder.setAutoCancel(true)
+				builder.setSmallIcon(android.R.drawable.stat_sys_download_done)
+				builder.setCategory(null)
+				builder.setStyle(null)
+				builder.setOngoing(false)
+				builder.setShowWhen(true)
+				builder.setWhen(System.currentTimeMillis())
+			}
+
+			state.isStopped -> {
+				builder.setProgress(0, 0, false)
+				builder.setContentText(context.getString(R.string.queued))
+				builder.setCategory(NotificationCompat.CATEGORY_PROGRESS)
+				builder.setStyle(null)
+				builder.setOngoing(true)
+				builder.setSmallIcon(R.drawable.ic_stat_paused)
+				builder.addAction(actionCancel)
+			}
+
+			state.isPaused -> { // paused (with error or manually)
+				builder.setProgress(state.max, state.progress, false)
+				val percent = if (state.percent >= 0) {
+					context.getString(R.string.percent_string_pattern, (state.percent * 100).format())
+				} else {
+					null
+				}
+				if (state.error != null) {
+					builder.setContentText(context.getString(R.string.download_summary_pattern, percent, state.error))
+				} else {
+					builder.setContentText(percent)
+				}
+				builder.setCategory(NotificationCompat.CATEGORY_PROGRESS)
+				builder.setStyle(null)
+				builder.setOngoing(true)
+				builder.setSmallIcon(R.drawable.ic_stat_paused)
+				builder.addAction(actionCancel)
+				builder.addAction(actionResume)
+			}
+
+			state.error != null -> { // error, final state
+				builder.setProgress(0, 0, false)
+				builder.setSmallIcon(android.R.drawable.stat_notify_error)
+				builder.setSubText(context.getString(R.string.error))
+				builder.setContentText(state.error)
+				builder.setAutoCancel(true)
+				builder.setOngoing(false)
+				builder.setCategory(NotificationCompat.CATEGORY_ERROR)
+				builder.setShowWhen(true)
+				builder.setWhen(System.currentTimeMillis())
+				builder.setStyle(NotificationCompat.BigTextStyle().bigText(state.error))
+			}
+
+			else -> {
+				builder.setProgress(state.max, state.progress, false)
+				builder.setContentText(getProgressString(state.percent, state.eta))
+				builder.setCategory(NotificationCompat.CATEGORY_PROGRESS)
+				builder.setStyle(null)
+				builder.setOngoing(true)
+				builder.addAction(actionCancel)
+				builder.addAction(actionPause)
+			}
+		}
+		return builder.build()
+	}
+
+	private fun getProgressString(percent: Float, eta: Long): CharSequence? {
+		val percentString = if (percent >= 0f) {
+			context.getString(R.string.percent_string_pattern, (percent * 100).format())
+		} else {
+			null
+		}
+		val etaString = if (eta > 0L) {
+			DateUtils.getRelativeTimeSpanString(
+				eta,
+				System.currentTimeMillis(),
+				DateUtils.SECOND_IN_MILLIS,
+			)
+		} else {
+			null
+		}
+		return when {
+			percentString == null && etaString == null -> null
+			percentString != null && etaString == null -> percentString
+			percentString == null && etaString != null -> etaString
+			else -> context.getString(R.string.download_summary_pattern, percentString, etaString)
+		}
+	}
+
+	private fun createMangaIntent(context: Context, manga: Manga?) = PendingIntentCompat.getActivity(
+		context,
+		manga.hashCode(),
+		if (manga != null) {
+			DetailsActivity.newIntent(context, manga)
+		} else {
+			MangaListActivity.newIntent(context, MangaSource.LOCAL)
+		},
+		PendingIntent.FLAG_CANCEL_CURRENT,
+		false,
+	)
+
+	private suspend fun getCover(manga: Manga) = covers[manga] ?: run {
+		runCatchingCancellable {
+			coil.execute(
+				ImageRequest.Builder(context)
+					.data(manga.coverUrl)
+					.allowHardware(false)
+					.tag(manga.source)
+					.size(coverWidth, coverHeight)
+					.scale(Scale.FILL)
+					.build(),
+			).getDrawableOrThrow()
+		}.onSuccess {
+			covers[manga] = it
+		}.onFailure {
+			it.printStackTraceDebug()
+		}.getOrNull()
+	}
+
+	private fun createChannel() {
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+			val manager = NotificationManagerCompat.from(context)
+			if (manager.getNotificationChannel(CHANNEL_ID) == null) {
+				val channel = NotificationChannel(
+					CHANNEL_ID,
+					context.getString(R.string.downloads),
+					NotificationManager.IMPORTANCE_LOW,
+				)
+				channel.enableVibration(false)
+				channel.enableLights(false)
+				channel.setSound(null, null)
+				manager.createNotificationChannel(channel)
+			}
+		}
+	}
+
+	@AssistedFactory
+	interface Factory {
+
+		fun create(uuid: UUID): DownloadNotificationFactory
+	}
+}

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

@@ -0,0 +1,25 @@
+package org.koitharu.kotatsu.download.ui.worker
+
+import android.view.View
+import androidx.lifecycle.Observer
+import com.google.android.material.snackbar.Snackbar
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.download.ui.list.DownloadsActivity
+import org.koitharu.kotatsu.main.ui.owners.BottomNavOwner
+import org.koitharu.kotatsu.utils.ext.findActivity
+
+class DownloadStartedObserver(
+	private val snackbarHost: View,
+) : Observer<Unit> {
+
+	override fun onChanged(value: Unit) {
+		val snackbar = Snackbar.make(snackbarHost, R.string.download_started, Snackbar.LENGTH_LONG)
+		(snackbarHost.context.findActivity() as? BottomNavOwner)?.let {
+			snackbar.anchorView = it.bottomNav
+		}
+		snackbar.setAction(R.string.details) {
+			it.context.startActivity(DownloadsActivity.newIntent(it.context))
+		}
+		snackbar.show()
+	}
+}

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

@@ -0,0 +1,454 @@
+package org.koitharu.kotatsu.download.ui.worker
+
+import android.app.NotificationManager
+import android.content.Context
+import android.webkit.MimeTypeMap
+import androidx.core.content.ContextCompat
+import androidx.hilt.work.HiltWorker
+import androidx.lifecycle.asFlow
+import androidx.work.BackoffPolicy
+import androidx.work.Constraints
+import androidx.work.CoroutineWorker
+import androidx.work.Data
+import androidx.work.ForegroundInfo
+import androidx.work.NetworkType
+import androidx.work.OneTimeWorkRequestBuilder
+import androidx.work.OutOfQuotaPolicy
+import androidx.work.WorkInfo
+import androidx.work.WorkManager
+import androidx.work.WorkerParameters
+import androidx.work.await
+import dagger.Reusable
+import dagger.assisted.Assisted
+import dagger.assisted.AssistedInject
+import dagger.hilt.android.qualifiers.ApplicationContext
+import kotlinx.coroutines.CancellationException
+import kotlinx.coroutines.NonCancellable
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.withContext
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import okhttp3.internal.closeQuietly
+import okio.IOException
+import okio.buffer
+import okio.sink
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.base.domain.MangaDataRepository
+import org.koitharu.kotatsu.core.network.CommonHeaders
+import org.koitharu.kotatsu.core.parser.MangaRepository
+import org.koitharu.kotatsu.core.prefs.AppSettings
+import org.koitharu.kotatsu.download.domain.DownloadState
+import org.koitharu.kotatsu.local.data.LocalManga
+import org.koitharu.kotatsu.local.data.LocalStorageChanges
+import org.koitharu.kotatsu.local.data.PagesCache
+import org.koitharu.kotatsu.local.data.input.LocalMangaInput
+import org.koitharu.kotatsu.local.data.output.LocalMangaOutput
+import org.koitharu.kotatsu.local.domain.LocalMangaRepository
+import org.koitharu.kotatsu.parsers.model.Manga
+import org.koitharu.kotatsu.parsers.model.MangaChapter
+import org.koitharu.kotatsu.parsers.model.MangaSource
+import org.koitharu.kotatsu.parsers.util.await
+import org.koitharu.kotatsu.parsers.util.mapToSet
+import org.koitharu.kotatsu.utils.Throttler
+import org.koitharu.kotatsu.utils.WorkManagerHelper
+import org.koitharu.kotatsu.utils.ext.deleteAwait
+import org.koitharu.kotatsu.utils.ext.getDisplayMessage
+import org.koitharu.kotatsu.utils.ext.ifNullOrEmpty
+import org.koitharu.kotatsu.utils.ext.printStackTraceDebug
+import org.koitharu.kotatsu.utils.ext.runCatchingCancellable
+import org.koitharu.kotatsu.utils.ext.writeAllCancellable
+import org.koitharu.kotatsu.utils.progress.TimeLeftEstimator
+import java.io.File
+import java.util.UUID
+import java.util.concurrent.TimeUnit
+import javax.inject.Inject
+
+@HiltWorker
+class DownloadWorker @AssistedInject constructor(
+	@Assisted appContext: Context,
+	@Assisted params: WorkerParameters,
+	private val okHttp: OkHttpClient,
+	private val cache: PagesCache,
+	private val localMangaRepository: LocalMangaRepository,
+	private val mangaDataRepository: MangaDataRepository,
+	private val settings: AppSettings,
+	private val mangaRepositoryFactory: MangaRepository.Factory,
+	@LocalStorageChanges private val localStorageChanges: MutableSharedFlow<LocalManga?>,
+	notificationFactoryFactory: DownloadNotificationFactory.Factory,
+) : CoroutineWorker(appContext, params) {
+
+	private val notificationFactory = notificationFactoryFactory.create(params.id)
+	private val notificationManager = appContext.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+
+	@Volatile
+	private var lastPublishedState: DownloadState? = null
+	private val currentState: DownloadState
+		get() = checkNotNull(lastPublishedState)
+
+	private val pausingHandle = PausingHandle()
+	private val timeLeftEstimator = TimeLeftEstimator()
+	private val notificationThrottler = Throttler(400)
+	private val pausingReceiver = PausingReceiver(params.id, pausingHandle)
+
+	override suspend fun doWork(): Result {
+		setForeground(getForegroundInfo())
+		val mangaId = inputData.getLong(MANGA_ID, 0L)
+		val manga = mangaDataRepository.findMangaById(mangaId) ?: return Result.failure()
+		val chaptersIds = inputData.getLongArray(CHAPTERS_IDS)?.takeUnless { it.isEmpty() }
+		val downloadedIds = getDoneChapters()
+		lastPublishedState = DownloadState(manga, isIndeterminate = true)
+		return try {
+			downloadMangaImpl(chaptersIds, downloadedIds)
+			Result.success(currentState.toWorkData())
+		} catch (e: CancellationException) {
+			withContext(NonCancellable) {
+				val notification = notificationFactory.create(currentState.copy(isStopped = true))
+				notificationManager.notify(id.hashCode(), notification)
+			}
+			throw e
+		} catch (e: IOException) {
+			e.printStackTraceDebug()
+			Result.retry()
+		} catch (e: Exception) {
+			e.printStackTraceDebug()
+			Result.failure(
+				currentState.copy(
+					error = e.getDisplayMessage(applicationContext.resources),
+					eta = -1L,
+				).toWorkData(),
+			)
+		} finally {
+			notificationManager.cancel(id.hashCode())
+		}
+	}
+
+	override suspend fun getForegroundInfo() = ForegroundInfo(
+		id.hashCode(),
+		notificationFactory.create(lastPublishedState),
+	)
+
+	private suspend fun downloadMangaImpl(
+		includedIds: LongArray?,
+		excludedIds: LongArray,
+	) {
+		var manga = currentState.manga
+		val chaptersToSkip = excludedIds.toMutableSet()
+		withMangaLock(manga) {
+			ContextCompat.registerReceiver(
+				applicationContext,
+				pausingReceiver,
+				PausingReceiver.createIntentFilter(id),
+				ContextCompat.RECEIVER_NOT_EXPORTED,
+			)
+			val destination = localMangaRepository.getOutputDir(manga)
+			checkNotNull(destination) { applicationContext.getString(R.string.cannot_find_available_storage) }
+			val tempFileName = "${manga.id}_$id.tmp"
+			var output: LocalMangaOutput? = null
+			try {
+				if (manga.source == MangaSource.LOCAL) {
+					manga = localMangaRepository.getRemoteManga(manga)
+						?: error("Cannot obtain remote manga instance")
+				}
+				val repo = mangaRepositoryFactory.create(manga.source)
+				val mangaDetails = if (manga.chapters.isNullOrEmpty()) repo.getDetails(manga) else manga
+				output = LocalMangaOutput.getOrCreate(destination, mangaDetails)
+				val coverUrl = mangaDetails.largeCoverUrl.ifNullOrEmpty { mangaDetails.coverUrl }
+				if (coverUrl.isNotEmpty()) {
+					downloadFile(coverUrl, destination, tempFileName, repo.source).let { file ->
+						output.addCover(file, MimeTypeMap.getFileExtensionFromUrl(coverUrl))
+					}
+				}
+				val chapters = getChapters(mangaDetails, includedIds)
+				for ((chapterIndex, chapter) in chapters.withIndex()) {
+					if (chaptersToSkip.remove(chapter.id)) {
+						publishState(
+							currentState.copy(
+								downloadedChapters = currentState.downloadedChapters + chapter.id,
+							),
+						)
+						continue
+					}
+					val pages = runFailsafe(pausingHandle) {
+						repo.getPages(chapter)
+					}
+					for ((pageIndex, page) in pages.withIndex()) {
+						runFailsafe(pausingHandle) {
+							val url = repo.getPageUrl(page)
+							val file = cache.get(url)
+								?: downloadFile(url, destination, tempFileName, repo.source)
+							output.addPage(
+								chapter = chapter,
+								file = file,
+								pageNumber = pageIndex,
+								ext = MimeTypeMap.getFileExtensionFromUrl(url),
+							)
+						}
+						publishState(
+							currentState.copy(
+								totalChapters = chapters.size,
+								currentChapter = chapterIndex,
+								totalPages = pages.size,
+								currentPage = pageIndex,
+								isIndeterminate = false,
+								eta = timeLeftEstimator.getEta(),
+							),
+						)
+
+						if (settings.isDownloadsSlowdownEnabled) {
+							delay(SLOWDOWN_DELAY)
+						}
+					}
+					if (output.flushChapter(chapter)) {
+						runCatchingCancellable {
+							localStorageChanges.emit(LocalMangaInput.of(output.rootFile).getManga())
+						}.onFailure(Throwable::printStackTraceDebug)
+					}
+					publishState(
+						currentState.copy(
+							downloadedChapters = currentState.downloadedChapters + chapter.id,
+						),
+					)
+				}
+				publishState(currentState.copy(isIndeterminate = true, eta = -1L))
+				output.mergeWithExisting()
+				output.finish()
+				val localManga = LocalMangaInput.of(output.rootFile).getManga()
+				localStorageChanges.emit(localManga)
+				publishState(currentState.copy(localManga = localManga, eta = -1L))
+			} catch (e: Exception) {
+				if (e !is CancellationException) {
+					publishState(currentState.copy(error = e.getDisplayMessage(applicationContext.resources)))
+				}
+				throw e
+			} finally {
+				withContext(NonCancellable) {
+					applicationContext.unregisterReceiver(pausingReceiver)
+					output?.closeQuietly()
+					output?.cleanup()
+					File(destination, tempFileName).deleteAwait()
+				}
+			}
+		}
+	}
+
+	private suspend fun <R> runFailsafe(
+		pausingHandle: PausingHandle,
+		block: suspend () -> R,
+	): R {
+		if (pausingHandle.isPaused) {
+			publishState(currentState.copy(isPaused = true, eta = -1L))
+			pausingHandle.awaitResumed()
+			publishState(currentState.copy(isPaused = false))
+		}
+		var countDown = MAX_FAILSAFE_ATTEMPTS
+		failsafe@ while (true) {
+			try {
+				return block()
+			} catch (e: IOException) {
+				if (countDown <= 0) {
+					publishState(
+						currentState.copy(
+							isPaused = true,
+							error = e.getDisplayMessage(applicationContext.resources),
+							eta = -1L,
+						),
+					)
+					countDown = MAX_FAILSAFE_ATTEMPTS
+					pausingHandle.pause()
+					pausingHandle.awaitResumed()
+					publishState(currentState.copy(isPaused = false, error = null))
+				} else {
+					countDown--
+					delay(DOWNLOAD_ERROR_DELAY)
+				}
+			}
+		}
+	}
+
+	private suspend fun downloadFile(
+		url: String,
+		destination: File,
+		tempFileName: String,
+		source: MangaSource,
+	): File {
+		val request = Request.Builder()
+			.url(url)
+			.tag(MangaSource::class.java, source)
+			.header(CommonHeaders.ACCEPT, "image/webp,image/png;q=0.9,image/jpeg,*/*;q=0.8")
+			.cacheControl(CommonHeaders.CACHE_CONTROL_NO_STORE)
+			.get()
+			.build()
+		val call = okHttp.newCall(request)
+		val file = File(destination, tempFileName)
+		val response = call.clone().await()
+		checkNotNull(response.body).use { body ->
+			file.sink(append = false).buffer().use {
+				it.writeAllCancellable(body.source())
+			}
+		}
+		return file
+	}
+
+	private suspend fun publishState(state: DownloadState) {
+		val previousState = currentState
+		lastPublishedState = state
+		if (previousState.isParticularProgress && state.isParticularProgress) {
+			timeLeftEstimator.tick(state.progress, state.max)
+		} else {
+			timeLeftEstimator.emptyTick()
+			notificationThrottler.reset()
+		}
+		val notification = notificationFactory.create(state)
+		if (state.isFinalState) {
+			notificationManager.notify(id.toString(), id.hashCode(), notification)
+		} else if (notificationThrottler.throttle()) {
+			notificationManager.notify(id.hashCode(), notification)
+		} else {
+			return
+		}
+		setProgress(state.toWorkData())
+	}
+
+	private suspend fun getDoneChapters(): LongArray {
+		val work = WorkManagerHelper(WorkManager.getInstance(applicationContext)).getWorkInfoById(id)
+			?: return LongArray(0)
+		return DownloadState.getDownloadedChapters(work.progress)
+	}
+
+	private fun getChapters(
+		manga: Manga,
+		includedIds: LongArray?,
+	): List<MangaChapter> {
+		val chapters = checkNotNull(manga.chapters?.toMutableList()) {
+			"Chapters list must not be null"
+		}
+		if (includedIds != null) {
+			val chaptersIdsSet = includedIds.toMutableSet()
+			chapters.retainAll { x -> chaptersIdsSet.remove(x.id) }
+			check(chaptersIdsSet.isEmpty()) {
+				"${chaptersIdsSet.size} of ${includedIds.size} requested chapters not found in manga"
+			}
+		}
+		check(chapters.isNotEmpty()) { "Chapters list must not be empty" }
+		return chapters
+	}
+
+	private suspend inline fun <T> withMangaLock(manga: Manga, block: () -> T) = try {
+		localMangaRepository.lockManga(manga.id)
+		block()
+	} finally {
+		localMangaRepository.unlockManga(manga.id)
+	}
+
+	@Reusable
+	class Scheduler @Inject constructor(
+		@ApplicationContext private val context: Context,
+		private val dataRepository: MangaDataRepository,
+		private val settings: AppSettings,
+	) {
+
+		private val workManager: WorkManager
+			inline get() = WorkManager.getInstance(context)
+
+		suspend fun schedule(manga: Manga, chaptersIds: Collection<Long>?) {
+			dataRepository.storeManga(manga)
+			val data = Data.Builder()
+				.putLong(MANGA_ID, manga.id)
+			if (!chaptersIds.isNullOrEmpty()) {
+				data.putLongArray(CHAPTERS_IDS, chaptersIds.toLongArray())
+			}
+			scheduleImpl(listOf(data.build()))
+		}
+
+		suspend fun schedule(manga: Collection<Manga>) {
+			val data = manga.map {
+				dataRepository.storeManga(it)
+				Data.Builder()
+					.putLong(MANGA_ID, it.id)
+					.build()
+			}
+			scheduleImpl(data)
+		}
+
+		fun observeWorks(): Flow<List<WorkInfo>> = workManager
+			.getWorkInfosByTagLiveData(TAG)
+			.asFlow()
+
+		suspend fun cancel(id: UUID) {
+			workManager.cancelWorkById(id).await()
+		}
+
+		suspend fun cancelAll() {
+			workManager.cancelAllWorkByTag(TAG).await()
+		}
+
+		fun pause(id: UUID) {
+			val intent = PausingReceiver.getPauseIntent(id)
+			context.sendBroadcast(intent)
+		}
+
+		fun resume(id: UUID) {
+			val intent = PausingReceiver.getResumeIntent(id)
+			context.sendBroadcast(intent)
+		}
+
+		suspend fun delete(id: UUID) {
+			WorkManagerHelper(workManager).deleteWork(id)
+		}
+
+		suspend fun removeCompleted() {
+			val helper = WorkManagerHelper(workManager)
+			val finishedWorks = helper.getFinishedWorkInfosByTag(TAG)
+			helper.deleteWorks(finishedWorks.mapToSet { it.id })
+		}
+
+		suspend fun updateConstraints() {
+			val constraints = Constraints.Builder()
+				.setRequiresStorageNotLow(true)
+				.setRequiredNetworkType(if (settings.isDownloadsWiFiOnly) NetworkType.UNMETERED else NetworkType.CONNECTED)
+				.build()
+			val helper = WorkManagerHelper(workManager)
+			val works = helper.getWorkInfosByTag(TAG)
+			for (work in works) {
+				if (work.state.isFinished) {
+					continue
+				}
+				val request = OneTimeWorkRequestBuilder<DownloadWorker>()
+					.setConstraints(constraints)
+					.setId(work.id)
+					.build()
+				helper.updateWork(request)
+			}
+		}
+
+		private suspend fun scheduleImpl(data: Collection<Data>) {
+			val constraints = Constraints.Builder()
+				.setRequiresStorageNotLow(true)
+				.setRequiredNetworkType(if (settings.isDownloadsWiFiOnly) NetworkType.UNMETERED else NetworkType.CONNECTED)
+				.build()
+			val requests = data.map { inputData ->
+				OneTimeWorkRequestBuilder<DownloadWorker>()
+					.setConstraints(constraints)
+					.addTag(TAG)
+					.keepResultsForAtLeast(7, TimeUnit.DAYS)
+					.setBackoffCriteria(BackoffPolicy.LINEAR, 10, TimeUnit.SECONDS)
+					.setInputData(inputData)
+					.setExpedited(OutOfQuotaPolicy.RUN_AS_NON_EXPEDITED_WORK_REQUEST)
+					.build()
+			}
+			workManager.enqueue(requests).await()
+		}
+	}
+
+	private companion object {
+
+		const val MAX_FAILSAFE_ATTEMPTS = 2
+		const val DOWNLOAD_ERROR_DELAY = 500L
+		const val SLOWDOWN_DELAY = 100L
+		const val MANGA_ID = "manga_id"
+		const val CHAPTERS_IDS = "chapters"
+		const val TAG = "download"
+	}
+}

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

@@ -1,4 +1,4 @@
-package org.koitharu.kotatsu.download.ui.service
+package org.koitharu.kotatsu.download.ui.worker
 
 import androidx.annotation.AnyThread
 import kotlinx.coroutines.flow.MutableStateFlow
@@ -27,4 +27,4 @@ class PausingHandle {
 	fun resume() {
 		paused.value = false
 	}
-}
+}

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

@@ -0,0 +1,67 @@
+package org.koitharu.kotatsu.download.ui.worker
+
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.content.IntentFilter
+import android.net.Uri
+import android.os.PatternMatcher
+import androidx.core.app.PendingIntentCompat
+import org.koitharu.kotatsu.utils.ext.toUUIDOrNull
+import java.util.UUID
+
+class PausingReceiver(
+	private val id: UUID,
+	private val pausingHandle: PausingHandle,
+) : BroadcastReceiver() {
+
+	override fun onReceive(context: Context, intent: Intent?) {
+		val uuid = intent?.getStringExtra(EXTRA_UUID)?.toUUIDOrNull()
+		if (uuid != id) {
+			return
+		}
+		when (intent.action) {
+			ACTION_RESUME -> pausingHandle.resume()
+			ACTION_PAUSE -> pausingHandle.pause()
+		}
+	}
+
+	companion object {
+
+		private const val ACTION_PAUSE = "org.koitharu.kotatsu.download.PAUSE"
+		private const val ACTION_RESUME = "org.koitharu.kotatsu.download.RESUME"
+		private const val EXTRA_UUID = "uuid"
+		private const val SCHEME = "workuid"
+
+		fun createIntentFilter(id: UUID) = IntentFilter().apply {
+			addAction(ACTION_PAUSE)
+			addAction(ACTION_RESUME)
+			addDataScheme(SCHEME)
+			addDataPath(id.toString(), PatternMatcher.PATTERN_SIMPLE_GLOB)
+		}
+
+		fun getPauseIntent(id: UUID) = Intent(ACTION_PAUSE)
+			.setData(Uri.parse("$SCHEME://$id"))
+			.putExtra(EXTRA_UUID, id.toString())
+
+		fun getResumeIntent(id: UUID) = Intent(ACTION_RESUME)
+			.setData(Uri.parse("$SCHEME://$id"))
+			.putExtra(EXTRA_UUID, id.toString())
+
+		fun createPausePendingIntent(context: Context, id: UUID) = PendingIntentCompat.getBroadcast(
+			context,
+			0,
+			getPauseIntent(id),
+			0,
+			false,
+		)
+
+		fun createResumePendingIntent(context: Context, id: UUID) = PendingIntentCompat.getBroadcast(
+			context,
+			0,
+			getResumeIntent(id),
+			0,
+			false,
+		)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/explore/domain/ExploreRepository.kt

@@ -1,11 +1,16 @@
 package org.koitharu.kotatsu.explore.domain
 
-import javax.inject.Inject
 import org.koitharu.kotatsu.core.parser.MangaRepository
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.history.domain.HistoryRepository
 import org.koitharu.kotatsu.parsers.model.Manga
-import org.koitharu.kotatsu.parsers.model.SortOrder
+import org.koitharu.kotatsu.parsers.model.MangaSource
+import org.koitharu.kotatsu.suggestions.domain.TagsBlacklist
+import org.koitharu.kotatsu.utils.ext.almostEquals
+import org.koitharu.kotatsu.utils.ext.asArrayList
+import org.koitharu.kotatsu.utils.ext.printStackTraceDebug
+import org.koitharu.kotatsu.utils.ext.runCatchingCancellable
+import javax.inject.Inject
 
 class ExploreRepository @Inject constructor(
 	private val settings: AppSettings,
@@ -14,29 +19,47 @@ class ExploreRepository @Inject constructor(
 ) {
 
 	suspend fun findRandomManga(tagsLimit: Int): Manga {
-		val blacklistTagRegex = settings.getSuggestionsTagsBlacklistRegex()
-		val allTags = historyRepository.getPopularTags(tagsLimit).filterNot {
-			blacklistTagRegex?.containsMatchIn(it.title) ?: false
+		val blacklistTagRegex = TagsBlacklist(settings.suggestionsTagsBlacklist, 0.4f)
+		val tags = historyRepository.getPopularTags(tagsLimit).mapNotNull {
+			if (it in blacklistTagRegex) null else it.title
 		}
-		val tag = allTags.randomOrNull()
-		val source = checkNotNull(tag?.source ?: settings.getMangaSources(includeHidden = false).randomOrNull()) {
-			"No sources found"
-		}
-		val repo = mangaRepositoryFactory.create(source)
-		val list = repo.getList(
-			offset = 0,
-			sortOrder = if (SortOrder.UPDATED in repo.sortOrders) SortOrder.UPDATED else null,
-			tags = setOfNotNull(tag),
-		).shuffled()
-		for (item in list) {
-			if (settings.isSuggestionsExcludeNsfw && item.isNsfw) {
+		val sources = settings.getMangaSources(includeHidden = false)
+		check(sources.isNotEmpty()) { "No sources available" }
+		for (i in 0..4) {
+			val list = getList(sources.random(), tags, blacklistTagRegex)
+			val manga = list.randomOrNull() ?: continue
+			val details = runCatchingCancellable {
+				mangaRepositoryFactory.create(manga.source).getDetails(manga)
+			}.getOrNull() ?: continue
+			if ((settings.isSuggestionsExcludeNsfw && details.isNsfw) || details in blacklistTagRegex) {
 				continue
 			}
-			if (blacklistTagRegex != null && item.tags.any { x -> blacklistTagRegex.containsMatchIn(x.title) }) {
-				continue
-			}
-			return item
+			return details
 		}
-		return list.random()
+		throw NoSuchElementException()
 	}
+
+	private suspend fun getList(
+		source: MangaSource,
+		tags: List<String>,
+		blacklist: TagsBlacklist,
+	): List<Manga> = runCatchingCancellable {
+		val repository = mangaRepositoryFactory.create(source)
+		val order = repository.sortOrders.random()
+		val availableTags = repository.getTags()
+		val tag = tags.firstNotNullOfOrNull { title ->
+			availableTags.find { x -> x.title.almostEquals(title, 0.4f) }
+		}
+		val list = repository.getList(0, setOfNotNull(tag), order).asArrayList()
+		if (settings.isSuggestionsExcludeNsfw) {
+			list.removeAll { it.isNsfw }
+		}
+		if (blacklist.isNotEmpty()) {
+			list.removeAll { manga -> manga in blacklist }
+		}
+		list.shuffle()
+		list
+	}.onFailure {
+		it.printStackTraceDebug()
+	}.getOrDefault(emptyList())
 }

app/src/main/java/org/koitharu/kotatsu/explore/ui/ExploreFragment.kt

@@ -1,5 +1,6 @@
 package org.koitharu.kotatsu.explore.ui
 
+import android.content.DialogInterface
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.MenuItem
@@ -16,6 +17,7 @@ import coil.ImageLoader
 import dagger.hilt.android.AndroidEntryPoint
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.base.ui.BaseFragment
+import org.koitharu.kotatsu.base.ui.dialog.TwoButtonsAlertDialog
 import org.koitharu.kotatsu.base.ui.list.OnListItemClickListener
 import org.koitharu.kotatsu.base.ui.util.RecyclerViewOwner
 import org.koitharu.kotatsu.base.ui.util.ReversibleActionObserver
@@ -76,6 +78,9 @@ class ExploreFragment :
 		viewModel.onOpenManga.observe(viewLifecycleOwner, ::onOpenManga)
 		viewModel.onActionDone.observe(viewLifecycleOwner, ReversibleActionObserver(binding.recyclerView))
 		viewModel.isGrid.observe(viewLifecycleOwner, ::onGridModeChanged)
+		viewModel.onShowSuggestionsTip.observe(viewLifecycleOwner) {
+			showSuggestionsTip()
+		}
 	}
 
 	override fun onDestroyView() {
@@ -143,6 +148,19 @@ class ExploreFragment :
 		activity?.invalidateOptionsMenu()
 	}
 
+	private fun showSuggestionsTip() {
+		val listener = DialogInterface.OnClickListener { _, which ->
+			viewModel.respondSuggestionTip(which == DialogInterface.BUTTON_POSITIVE)
+		}
+		TwoButtonsAlertDialog.Builder(requireContext())
+			.setIcon(R.drawable.ic_suggestion)
+			.setTitle(R.string.suggestions_enable_prompt)
+			.setPositiveButton(R.string.enable, listener)
+			.setNegativeButton(R.string.no_thanks, listener)
+			.create()
+			.show()
+	}
+
 	private inner class SourceMenuListener(
 		private val sourceItem: ExploreItem.Source,
 	) : PopupMenu.OnMenuItemClickListener {

app/src/main/java/org/koitharu/kotatsu/explore/ui/ExploreViewModel.kt

@@ -6,7 +6,6 @@ import androidx.lifecycle.viewModelScope
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.combine
-import kotlinx.coroutines.flow.distinctUntilChanged
 import kotlinx.coroutines.flow.filter
 import kotlinx.coroutines.flow.flatMapLatest
 import kotlinx.coroutines.flow.flowOf
@@ -27,6 +26,8 @@ import org.koitharu.kotatsu.utils.SingleLiveEvent
 import org.koitharu.kotatsu.utils.asFlowLiveData
 import javax.inject.Inject
 
+private const val TIP_SUGGESTIONS = "suggestions"
+
 @HiltViewModel
 class ExploreViewModel @Inject constructor(
 	private val settings: AppSettings,
@@ -41,6 +42,7 @@ class ExploreViewModel @Inject constructor(
 
 	val onOpenManga = SingleLiveEvent<Manga>()
 	val onActionDone = SingleLiveEvent<ReversibleAction>()
+	val onShowSuggestionsTip = SingleLiveEvent<Unit>()
 	val isGrid = gridMode.asFlowLiveData(viewModelScope.coroutineContext)
 
 	val content: LiveData<List<ExploreItem>> = isLoading.asFlow().flatMapLatest { loading ->
@@ -51,6 +53,14 @@ class ExploreViewModel @Inject constructor(
 		}
 	}.asFlowLiveData(viewModelScope.coroutineContext + Dispatchers.Default, listOf(ExploreItem.Loading))
 
+	init {
+		launchJob(Dispatchers.Default) {
+			if (!settings.isSuggestionsEnabled && settings.isTipEnabled(TIP_SUGGESTIONS)) {
+				onShowSuggestionsTip.emitCall(Unit)
+			}
+		}
+	}
+
 	fun openRandom() {
 		launchLoadingJob(Dispatchers.Default) {
 			val manga = exploreRepository.findRandomManga(tagsLimit = 8)
@@ -72,6 +82,11 @@ class ExploreViewModel @Inject constructor(
 		settings.isSourcesGridMode = value
 	}
 
+	fun respondSuggestionTip(isAccepted: Boolean) {
+		settings.isSuggestionsEnabled = isAccepted
+		settings.closeTip(TIP_SUGGESTIONS)
+	}
+
 	private fun createContentFlow() = settings.observe()
 		.filter {
 			it == AppSettings.KEY_SOURCES_HIDDEN ||
@@ -80,7 +95,6 @@ class ExploreViewModel @Inject constructor(
 		}
 		.onStart { emit("") }
 		.map { settings.getMangaSources(includeHidden = false) }
-		.distinctUntilChanged()
 		.combine(gridMode) { content, grid -> buildList(content, grid) }
 
 	private fun buildList(sources: List<MangaSource>, isGrid: Boolean): List<ExploreItem> {

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

@@ -1,9 +1,11 @@
 package org.koitharu.kotatsu.favourites.data
 
 import org.koitharu.kotatsu.core.db.entity.SortOrder
+import org.koitharu.kotatsu.core.db.entity.toManga
+import org.koitharu.kotatsu.core.db.entity.toMangaTags
 import org.koitharu.kotatsu.core.model.FavouriteCategory
 import org.koitharu.kotatsu.parsers.model.SortOrder
-import java.util.*
+import java.util.Date
 
 fun FavouriteCategoryEntity.toFavouriteCategory(id: Long = categoryId.toLong()) = FavouriteCategory(
 	id = id,
@@ -13,4 +15,8 @@ fun FavouriteCategoryEntity.toFavouriteCategory(id: Long = categoryId.toLong())
 	createdAt = Date(createdAt),
 	isTrackingEnabled = track,
 	isVisibleInLibrary = isVisibleInLibrary,
-)
+)
+
+fun FavouriteManga.toManga() = manga.toManga(tags.toMangaTags())
+
+fun Collection<FavouriteManga>.toMangaList() = map { it.toManga() }

app/src/main/java/org/koitharu/kotatsu/favourites/data/FavouritesDao.kt

@@ -17,6 +17,10 @@ abstract class FavouritesDao {
 	@Query("SELECT * FROM favourites WHERE deleted_at = 0 GROUP BY manga_id ORDER BY created_at DESC")
 	abstract suspend fun findAll(): List<FavouriteManga>
 
+	@Transaction
+	@Query("SELECT * FROM favourites WHERE deleted_at = 0 GROUP BY manga_id ORDER BY created_at DESC LIMIT :limit")
+	abstract suspend fun findLast(limit: Int): List<FavouriteManga>
+
 	fun observeAll(order: SortOrder): Flow<List<FavouriteManga>> {
 		val orderBy = getOrderBy(order)
 

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

@@ -12,12 +12,12 @@ import org.koitharu.kotatsu.core.db.MangaDatabase
 import org.koitharu.kotatsu.core.db.entity.SortOrder
 import org.koitharu.kotatsu.core.db.entity.toEntities
 import org.koitharu.kotatsu.core.db.entity.toEntity
-import org.koitharu.kotatsu.core.db.entity.toManga
-import org.koitharu.kotatsu.core.db.entity.toMangaTags
 import org.koitharu.kotatsu.core.model.FavouriteCategory
 import org.koitharu.kotatsu.favourites.data.FavouriteCategoryEntity
 import org.koitharu.kotatsu.favourites.data.FavouriteEntity
 import org.koitharu.kotatsu.favourites.data.toFavouriteCategory
+import org.koitharu.kotatsu.favourites.data.toManga
+import org.koitharu.kotatsu.favourites.data.toMangaList
 import org.koitharu.kotatsu.parsers.model.Manga
 import org.koitharu.kotatsu.parsers.model.SortOrder
 import org.koitharu.kotatsu.tracker.work.TrackerNotificationChannels
@@ -32,22 +32,27 @@ class FavouritesRepository @Inject constructor(
 
 	suspend fun getAllManga(): List<Manga> {
 		val entities = db.favouritesDao.findAll()
-		return entities.map { it.manga.toManga(it.tags.toMangaTags()) }
+		return entities.toMangaList()
+	}
+
+	suspend fun getLastManga(limit: Int): List<Manga> {
+		val entities = db.favouritesDao.findLast(limit)
+		return entities.toMangaList()
 	}
 
 	fun observeAll(order: SortOrder): Flow<List<Manga>> {
 		return db.favouritesDao.observeAll(order)
-			.mapItems { it.manga.toManga(it.tags.toMangaTags()) }
+			.mapItems { it.toManga() }
 	}
 
 	suspend fun getManga(categoryId: Long): List<Manga> {
 		val entities = db.favouritesDao.findAll(categoryId)
-		return entities.map { it.manga.toManga(it.tags.toMangaTags()) }
+		return entities.toMangaList()
 	}
 
 	fun observeAll(categoryId: Long, order: SortOrder): Flow<List<Manga>> {
 		return db.favouritesDao.observeAll(categoryId, order)
-			.mapItems { it.manga.toManga(it.tags.toMangaTags()) }
+			.mapItems { it.toManga() }
 	}
 
 	fun observeAll(categoryId: Long): Flow<List<Manga>> {

app/src/main/java/org/koitharu/kotatsu/favourites/ui/categories/edit/FavouritesCategoryEditActivity.kt

@@ -25,6 +25,7 @@ import org.koitharu.kotatsu.favourites.ui.categories.FavouriteCategoriesActivity
 import org.koitharu.kotatsu.parsers.model.SortOrder
 import org.koitharu.kotatsu.utils.ext.getDisplayMessage
 import org.koitharu.kotatsu.utils.ext.getSerializableCompat
+import org.koitharu.kotatsu.utils.ext.setChecked
 import com.google.android.material.R as materialR
 
 @AndroidEntryPoint
@@ -112,10 +113,8 @@ class FavouritesCategoryEditActivity :
 		selectedSortOrder = category?.order
 		val sortText = getString((category?.order ?: SortOrder.NEWEST).titleRes)
 		binding.editSort.setText(sortText, false)
-		binding.switchTracker.isChecked = category?.isTrackingEnabled ?: true
-		binding.switchTracker.jumpDrawablesToCurrentState()
-		binding.switchShelf.isChecked = category?.isVisibleInLibrary ?: true
-		binding.switchShelf.jumpDrawablesToCurrentState()
+		binding.switchTracker.setChecked(category?.isTrackingEnabled ?: true, false)
+		binding.switchShelf.setChecked(category?.isVisibleInLibrary ?: true, false)
 	}
 
 	private fun onError(e: Throwable) {

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

@@ -13,6 +13,7 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.base.ui.util.ReversibleAction
 import org.koitharu.kotatsu.core.parser.MangaTagHighlighter
 import org.koitharu.kotatsu.core.prefs.AppSettings
+import org.koitharu.kotatsu.download.ui.worker.DownloadWorker
 import org.koitharu.kotatsu.favourites.domain.FavouritesRepository
 import org.koitharu.kotatsu.favourites.ui.list.FavouritesListFragment.Companion.ARG_CATEGORY_ID
 import org.koitharu.kotatsu.favourites.ui.list.FavouritesListFragment.Companion.NO_ID
@@ -37,7 +38,8 @@ class FavouritesListViewModel @Inject constructor(
 	private val historyRepository: HistoryRepository,
 	private val settings: AppSettings,
 	private val tagHighlighter: MangaTagHighlighter,
-) : MangaListViewModel(settings), ListExtraProvider {
+	downloadScheduler: DownloadWorker.Scheduler,
+) : MangaListViewModel(settings, downloadScheduler), ListExtraProvider {
 
 	val categoryId: Long = savedStateHandle[ARG_CATEGORY_ID] ?: NO_ID
 

app/src/main/java/org/koitharu/kotatsu/history/ui/HistoryListViewModel.kt

@@ -15,6 +15,7 @@ import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.prefs.ListMode
 import org.koitharu.kotatsu.core.prefs.observeAsFlow
 import org.koitharu.kotatsu.core.ui.DateTimeAgo
+import org.koitharu.kotatsu.download.ui.worker.DownloadWorker
 import org.koitharu.kotatsu.history.domain.HistoryRepository
 import org.koitharu.kotatsu.history.domain.MangaWithHistory
 import org.koitharu.kotatsu.history.domain.PROGRESS_NONE
@@ -41,7 +42,8 @@ class HistoryListViewModel @Inject constructor(
 	private val settings: AppSettings,
 	private val trackingRepository: TrackingRepository,
 	private val tagHighlighter: MangaTagHighlighter,
-) : MangaListViewModel(settings) {
+	downloadScheduler: DownloadWorker.Scheduler,
+) : MangaListViewModel(settings, downloadScheduler) {
 
 	val isGroupingEnabled = MutableLiveData<Boolean>()
 

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

@@ -34,7 +34,7 @@ import org.koitharu.kotatsu.core.exceptions.resolve.SnackbarErrorObserver
 import org.koitharu.kotatsu.core.prefs.ListMode
 import org.koitharu.kotatsu.databinding.FragmentListBinding
 import org.koitharu.kotatsu.details.ui.DetailsActivity
-import org.koitharu.kotatsu.download.ui.service.DownloadService
+import org.koitharu.kotatsu.download.ui.worker.DownloadStartedObserver
 import org.koitharu.kotatsu.favourites.ui.categories.select.FavouriteCategoriesBottomSheet
 import org.koitharu.kotatsu.list.ui.adapter.MangaListAdapter
 import org.koitharu.kotatsu.list.ui.adapter.MangaListAdapter.Companion.ITEM_TYPE_MANGA_GRID
@@ -125,6 +125,7 @@ abstract class MangaListFragment :
 		viewModel.content.observe(viewLifecycleOwner, ::onListChanged)
 		viewModel.onError.observe(viewLifecycleOwner, SnackbarErrorObserver(binding.recyclerView, this))
 		viewModel.onActionDone.observe(viewLifecycleOwner, ReversibleActionObserver(binding.recyclerView))
+		viewModel.onDownloadStarted.observe(viewLifecycleOwner, DownloadStartedObserver(binding.recyclerView))
 	}
 
 	override fun onDestroyView() {
@@ -299,7 +300,7 @@ abstract class MangaListFragment :
 			}
 
 			R.id.action_save -> {
-				DownloadService.confirmAndStart(binding.recyclerView, selectedItems)
+				viewModel.download(selectedItems)
 				mode.finish()
 				true
 			}

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

@@ -11,13 +11,16 @@ import org.koitharu.kotatsu.base.ui.util.ReversibleAction
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.prefs.observeAsFlow
 import org.koitharu.kotatsu.core.prefs.observeAsLiveData
+import org.koitharu.kotatsu.download.ui.worker.DownloadWorker
 import org.koitharu.kotatsu.list.ui.model.ListModel
+import org.koitharu.kotatsu.parsers.model.Manga
 import org.koitharu.kotatsu.parsers.model.MangaTag
 import org.koitharu.kotatsu.utils.SingleLiveEvent
 import org.koitharu.kotatsu.utils.asFlowLiveData
 
 abstract class MangaListViewModel(
 	private val settings: AppSettings,
+	private val downloadScheduler: DownloadWorker.Scheduler,
 ) : BaseViewModel() {
 
 	abstract val content: LiveData<List<ListModel>>
@@ -30,10 +33,18 @@ abstract class MangaListViewModel(
 		key = AppSettings.KEY_GRID_SIZE,
 		valueProducer = { gridSize / 100f },
 	)
+	val onDownloadStarted = SingleLiveEvent<Unit>()
 
 	open fun onUpdateFilter(tags: Set<MangaTag>) = Unit
 
 	abstract fun onRefresh()
 
 	abstract fun onRetry()
+
+	fun download(items: Set<Manga>) {
+		launchJob(Dispatchers.Default) {
+			downloadScheduler.schedule(items)
+			onDownloadStarted.emitCall(Unit)
+		}
+	}
 }

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

@@ -4,11 +4,13 @@ package org.koitharu.kotatsu.list.ui.adapter
 
 import android.view.View
 import androidx.annotation.CheckResult
+import androidx.cardview.widget.CardView
 import androidx.core.view.doOnNextLayout
 import com.google.android.material.badge.BadgeDrawable
 import com.google.android.material.badge.BadgeUtils
 import com.google.android.material.badge.ExperimentalBadgeUtils
 import org.koitharu.kotatsu.R
+import com.google.android.material.R as materialR
 
 @CheckResult
 fun View.bindBadge(badge: BadgeDrawable?, counter: Int): BadgeDrawable? {
@@ -16,7 +18,7 @@ fun View.bindBadge(badge: BadgeDrawable?, counter: Int): BadgeDrawable? {
 		val badgeDrawable = badge ?: initBadge(this)
 		badgeDrawable.number = counter
 		badgeDrawable.isVisible = true
-		badgeDrawable.align()
+		badgeDrawable.align(this)
 		badgeDrawable
 	} else {
 		badge?.isVisible = false
@@ -34,12 +36,17 @@ private fun initBadge(anchor: View): BadgeDrawable {
 	badge.maxCharacterCount = resources.getInteger(R.integer.manga_badge_max_character_count)
 	anchor.doOnNextLayout {
 		BadgeUtils.attachBadgeDrawable(badge, it)
-		badge.align()
+		badge.align(it)
 	}
 	return badge
 }
 
-private fun BadgeDrawable.align() {
-	horizontalOffset = intrinsicWidth
-	verticalOffset = intrinsicHeight
+private fun BadgeDrawable.align(anchor: View) {
+	val extraOffset = if (anchor is CardView) {
+		(anchor.radius / 2f).toInt()
+	} else {
+		anchor.resources.getDimensionPixelOffset(materialR.dimen.m3_badge_offset)
+	}
+	horizontalOffset = intrinsicWidth + extraOffset
+	verticalOffset = intrinsicHeight + extraOffset
 }

app/src/main/java/org/koitharu/kotatsu/local/data/PagesCache.kt

@@ -6,17 +6,19 @@ import dagger.hilt.android.qualifiers.ApplicationContext
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.runInterruptible
 import kotlinx.coroutines.withContext
+import okio.Source
+import okio.buffer
+import okio.sink
 import org.koitharu.kotatsu.parsers.util.SuspendLazy
 import org.koitharu.kotatsu.utils.FileSize
-import org.koitharu.kotatsu.utils.ext.copyToSuspending
 import org.koitharu.kotatsu.utils.ext.longHashCode
 import org.koitharu.kotatsu.utils.ext.printStackTraceDebug
 import org.koitharu.kotatsu.utils.ext.runCatchingCancellable
 import org.koitharu.kotatsu.utils.ext.subdir
 import org.koitharu.kotatsu.utils.ext.takeIfReadable
 import org.koitharu.kotatsu.utils.ext.takeIfWriteable
+import org.koitharu.kotatsu.utils.ext.writeAllCancellable
 import java.io.File
-import java.io.InputStream
 import javax.inject.Inject
 import javax.inject.Singleton
 
@@ -49,11 +51,11 @@ class PagesCache @Inject constructor(@ApplicationContext context: Context) {
 		}
 	}
 
-	suspend fun put(url: String, inputStream: InputStream): File = withContext(Dispatchers.IO) {
+	suspend fun put(url: String, source: Source): File = withContext(Dispatchers.IO) {
 		val file = File(cacheDir.get().parentFile, url.longHashCode().toString())
 		try {
-			file.outputStream().use { out ->
-				inputStream.copyToSuspending(out)
+			file.sink(append = false).buffer().use {
+				it.writeAllCancellable(source)
 			}
 			lruCache.get().put(url, file)
 		} finally {

app/src/main/java/org/koitharu/kotatsu/local/data/importer/SingleMangaImporter.kt

@@ -7,16 +7,19 @@ import dagger.Reusable
 import dagger.hilt.android.qualifiers.ApplicationContext
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.MutableSharedFlow
-import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.runInterruptible
+import kotlinx.coroutines.withContext
+import okio.buffer
+import okio.sink
+import okio.source
 import org.koitharu.kotatsu.core.exceptions.UnsupportedFileException
 import org.koitharu.kotatsu.local.data.CbzFilter
 import org.koitharu.kotatsu.local.data.LocalManga
 import org.koitharu.kotatsu.local.data.LocalStorageChanges
 import org.koitharu.kotatsu.local.data.LocalStorageManager
 import org.koitharu.kotatsu.local.data.input.LocalMangaInput
-import org.koitharu.kotatsu.utils.ext.copyToSuspending
 import org.koitharu.kotatsu.utils.ext.resolveName
+import org.koitharu.kotatsu.utils.ext.writeAllCancellable
 import java.io.File
 import java.io.IOException
 import javax.inject.Inject
@@ -30,17 +33,17 @@ class SingleMangaImporter @Inject constructor(
 
 	private val contentResolver = context.contentResolver
 
-	suspend fun import(uri: Uri, progressState: MutableStateFlow<Float>?): LocalManga {
+	suspend fun import(uri: Uri): LocalManga {
 		val result = if (isDirectory(uri)) {
-			importDirectory(uri, progressState)
+			importDirectory(uri)
 		} else {
-			importFile(uri, progressState)
+			importFile(uri)
 		}
 		localStorageChanges.emit(result)
 		return result
 	}
 
-	private suspend fun importFile(uri: Uri, progressState: MutableStateFlow<Float>?): LocalManga {
+	private suspend fun importFile(uri: Uri): LocalManga = withContext(Dispatchers.IO) {
 		val contentResolver = storageManager.contentResolver
 		val name = contentResolver.resolveName(uri) ?: throw IOException("Cannot fetch name from uri: $uri")
 		if (!CbzFilter.isFileSupported(name)) {
@@ -50,14 +53,14 @@ class SingleMangaImporter @Inject constructor(
 		runInterruptible {
 			contentResolver.openInputStream(uri)
 		}?.use { source ->
-			dest.outputStream().use { output ->
-				source.copyToSuspending(output, progressState = progressState)
+			dest.sink().buffer().use { output ->
+				output.writeAllCancellable(source.source())
 			}
 		} ?: throw IOException("Cannot open input stream: $uri")
-		return LocalMangaInput.of(dest).getManga()
+		LocalMangaInput.of(dest).getManga()
 	}
 
-	private suspend fun importDirectory(uri: Uri, progressState: MutableStateFlow<Float>?): LocalManga {
+	private suspend fun importDirectory(uri: Uri): LocalManga {
 		val root = requireNotNull(DocumentFile.fromTreeUri(context, uri)) {
 			"Provided uri $uri is not a tree"
 		}
@@ -80,9 +83,9 @@ class SingleMangaImporter @Inject constructor(
 				docFile.copyTo(subDir)
 			}
 		} else {
-			inputStream().use { input ->
-				File(destDir, requireName()).outputStream().use { output ->
-					input.copyToSuspending(output)
+			inputStream().source().use { input ->
+				File(destDir, requireName()).sink().buffer().use { output ->
+					output.writeAllCancellable(input)
 				}
 			}
 		}

app/src/main/java/org/koitharu/kotatsu/local/data/input/LocalMangaInput.kt

@@ -31,7 +31,8 @@ sealed class LocalMangaInput(
 		}
 
 		@JvmStatic
-		protected fun zipUri(file: File, entryName: String) = "cbz://${file.path}#$entryName"
+		protected fun zipUri(file: File, entryName: String): String =
+			Uri.fromParts("cbz", file.path, entryName).toString()
 
 		@JvmStatic
 		protected fun Manga.copy2(

app/src/main/java/org/koitharu/kotatsu/local/data/output/LocalMangaOutput.kt

@@ -1,6 +1,11 @@
 package org.koitharu.kotatsu.local.data.output
 
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import kotlinx.coroutines.withContext
 import okio.Closeable
+import org.koitharu.kotatsu.local.data.input.LocalMangaInput
 import org.koitharu.kotatsu.parsers.model.Manga
 import org.koitharu.kotatsu.parsers.model.MangaChapter
 import org.koitharu.kotatsu.parsers.util.toFileNameSafe
@@ -26,25 +31,63 @@ sealed class LocalMangaOutput(
 
 		const val ENTRY_NAME_INDEX = "index.json"
 		const val SUFFIX_TMP = ".tmp"
+		private val mutex = Mutex()
 
-		fun getOrCreate(root: File, manga: Manga): LocalMangaOutput {
-			return checkNotNull(getImpl(root, manga, onlyIfExists = false))
-		}
-
-		fun get(root: File, manga: Manga): LocalMangaOutput? {
-			return getImpl(root, manga, onlyIfExists = true)
-		}
-
-		private fun getImpl(root: File, manga: Manga, onlyIfExists: Boolean): LocalMangaOutput? {
-			val fileName = manga.title.toFileNameSafe()
-			val dir = File(root, fileName)
-			val zip = File(root, "$fileName.cbz")
-			return when {
-				dir.isDirectory -> LocalMangaDirOutput(dir, manga)
-				zip.isFile -> LocalMangaZipOutput(zip, manga)
-				!onlyIfExists -> LocalMangaDirOutput(dir, manga)
-				else -> null
+		suspend fun getOrCreate(root: File, manga: Manga): LocalMangaOutput = withContext(Dispatchers.IO) {
+			val preferSingleCbz = manga.chapters.let {
+				it != null && it.size <= 3
 			}
+			checkNotNull(getImpl(root, manga, onlyIfExists = false, preferSingleCbz))
+		}
+
+		suspend fun get(root: File, manga: Manga): LocalMangaOutput? = withContext(Dispatchers.IO) {
+			getImpl(root, manga, onlyIfExists = true, preferSingleCbz = false)
+		}
+
+		private suspend fun getImpl(
+			root: File,
+			manga: Manga,
+			onlyIfExists: Boolean,
+			preferSingleCbz: Boolean,
+		): LocalMangaOutput? {
+			mutex.withLock {
+				var i = 0
+				val baseName = manga.title.toFileNameSafe()
+				while (true) {
+					val fileName = if (i == 0) baseName else baseName + "_$i"
+					val dir = File(root, fileName)
+					val zip = File(root, "$fileName.cbz")
+					i++
+					return when {
+						dir.isDirectory -> {
+							if (canWriteTo(dir, manga)) {
+								LocalMangaDirOutput(dir, manga)
+							} else {
+								continue
+							}
+						}
+
+						zip.isFile -> if (canWriteTo(zip, manga)) {
+							LocalMangaZipOutput(zip, manga)
+						} else {
+							continue
+						}
+
+						!onlyIfExists -> if (preferSingleCbz) {
+							LocalMangaZipOutput(zip, manga)
+						} else {
+							LocalMangaDirOutput(dir, manga)
+						}
+
+						else -> null
+					}
+				}
+			}
+		}
+
+		private suspend fun canWriteTo(file: File, manga: Manga): Boolean {
+			val info = LocalMangaInput.of(file).getMangaInfo() ?: return false
+			return info.id == manga.id
 		}
 	}
 }

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

@@ -9,7 +9,6 @@ import android.net.Uri
 import android.os.Build
 import androidx.core.app.NotificationCompat
 import androidx.core.app.PendingIntentCompat
-import androidx.core.content.ContextCompat
 import androidx.hilt.work.HiltWorker
 import androidx.work.Constraints
 import androidx.work.CoroutineWorker
@@ -48,7 +47,7 @@ class ImportWorker @AssistedInject constructor(
 		val uri = inputData.getString(DATA_URI)?.toUriOrNull() ?: return Result.failure()
 		setForeground(getForegroundInfo())
 		val result = runCatchingCancellable {
-			importer.import(uri, null).manga
+			importer.import(uri).manga
 		}
 		val notification = buildNotification(result)
 		notificationManager.notify(uri.hashCode(), notification)
@@ -70,12 +69,12 @@ class ImportWorker @AssistedInject constructor(
 			.setContentTitle(title)
 			.setPriority(NotificationCompat.PRIORITY_MIN)
 			.setDefaults(0)
-			.setColor(ContextCompat.getColor(applicationContext, R.color.blue_primary_dark))
 			.setSilent(true)
+			.setOngoing(true)
 			.setProgress(0, 0, true)
 			.setSmallIcon(android.R.drawable.stat_sys_download)
 			.setForegroundServiceBehavior(NotificationCompat.FOREGROUND_SERVICE_IMMEDIATE)
-			.setOngoing(true)
+			.setCategory(NotificationCompat.CATEGORY_PROGRESS)
 			.build()
 
 		return ForegroundInfo(FOREGROUND_NOTIFICATION_ID, notification)
@@ -85,7 +84,6 @@ class ImportWorker @AssistedInject constructor(
 		val notification = NotificationCompat.Builder(applicationContext, CHANNEL_ID)
 			.setPriority(NotificationCompat.PRIORITY_DEFAULT)
 			.setDefaults(0)
-			.setColor(ContextCompat.getColor(applicationContext, R.color.blue_primary_dark))
 			.setSilent(true)
 		result.onSuccess { manga ->
 			notification.setLargeIcon(

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

@@ -56,7 +56,6 @@ class LocalChaptersRemoveService : CoroutineIntentService() {
 			.setContentTitle(getString(R.string.error_occurred))
 			.setPriority(NotificationCompat.PRIORITY_DEFAULT)
 			.setDefaults(0)
-			.setColor(ContextCompat.getColor(this, R.color.blue_primary_dark))
 			.setSilent(true)
 			.setContentText(error.getDisplayMessage(resources))
 			.setSmallIcon(android.R.drawable.stat_notify_error)
@@ -82,7 +81,6 @@ class LocalChaptersRemoveService : CoroutineIntentService() {
 			.setContentTitle(title)
 			.setPriority(NotificationCompat.PRIORITY_MIN)
 			.setDefaults(0)
-			.setColor(ContextCompat.getColor(this, R.color.blue_primary_dark))
 			.setSilent(true)
 			.setProgress(0, 0, true)
 			.setSmallIcon(android.R.drawable.stat_notify_sync)

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

@@ -17,6 +17,7 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.base.ui.widgets.ChipsView
 import org.koitharu.kotatsu.core.parser.MangaTagHighlighter
 import org.koitharu.kotatsu.core.prefs.AppSettings
+import org.koitharu.kotatsu.download.ui.worker.DownloadWorker
 import org.koitharu.kotatsu.history.domain.HistoryRepository
 import org.koitharu.kotatsu.history.domain.PROGRESS_NONE
 import org.koitharu.kotatsu.list.domain.ListExtraProvider
@@ -48,7 +49,8 @@ class LocalListViewModel @Inject constructor(
 	private val settings: AppSettings,
 	private val tagHighlighter: MangaTagHighlighter,
 	@LocalStorageChanges private val localStorageChanges: SharedFlow<LocalManga?>,
-) : MangaListViewModel(settings), ListExtraProvider {
+	downloadScheduler: DownloadWorker.Scheduler,
+) : MangaListViewModel(settings, downloadScheduler), ListExtraProvider {
 
 	val onMangaRemoved = SingleLiveEvent<Unit>()
 	val sortOrder = MutableLiveData(settings.localListOrder)

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

@@ -20,6 +20,7 @@ import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 import okhttp3.OkHttpClient
 import okhttp3.Request
+import okio.source
 import org.koitharu.kotatsu.core.network.CommonHeaders
 import org.koitharu.kotatsu.core.parser.MangaRepository
 import org.koitharu.kotatsu.core.parser.RemoteMangaRepository
@@ -186,7 +187,7 @@ class PageLoader @Inject constructor(
 					val entry = zip.getEntry(uri.fragment)
 					zip.getInputStream(entry)
 				}.use {
-					cache.put(pageUrl, it)
+					cache.put(pageUrl, it.source())
 				}
 			}
 		} else {
@@ -199,13 +200,13 @@ class PageLoader @Inject constructor(
 				.build()
 			okHttp.newCall(request).await().use { response ->
 				check(response.isSuccessful) {
-					"Invalid response: ${response.code} ${response.message}"
+					"Invalid response: ${response.code} ${response.message} at $pageUrl"
 				}
 				val body = checkNotNull(response.body) {
 					"Null response"
 				}
-				body.withProgress(progress).byteStream().use {
-					cache.put(pageUrl, it)
+				body.withProgress(progress).use {
+					cache.put(pageUrl, it.source())
 				}
 			}
 		}

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

@@ -12,11 +12,14 @@ import kotlinx.coroutines.suspendCancellableCoroutine
 import kotlinx.coroutines.withContext
 import okhttp3.HttpUrl.Companion.toHttpUrl
 import okio.IOException
+import okio.buffer
+import okio.sink
+import okio.source
 import org.koitharu.kotatsu.base.domain.MangaDataRepository
 import org.koitharu.kotatsu.parsers.model.MangaPage
 import org.koitharu.kotatsu.parsers.util.toFileNameSafe
 import org.koitharu.kotatsu.reader.domain.PageLoader
-import org.koitharu.kotatsu.utils.ext.copyToSuspending
+import org.koitharu.kotatsu.utils.ext.writeAllCancellable
 import java.io.File
 import javax.inject.Inject
 import kotlin.coroutines.Continuation
@@ -49,10 +52,10 @@ class PageSaveHelper @Inject constructor(
 			}
 		}
 		runInterruptible(Dispatchers.IO) {
-			contentResolver.openOutputStream(destination)
+			contentResolver.openOutputStream(destination)?.sink()?.buffer()
 		}?.use { output ->
-			pageFile.inputStream().use { input ->
-				input.copyToSuspending(output)
+			pageFile.source().use { input ->
+				output.writeAllCancellable(input)
 			}
 		} ?: throw IOException("Output stream is null")
 		return destination

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

@@ -50,6 +50,7 @@ import org.koitharu.kotatsu.utils.GridTouchHelper
 import org.koitharu.kotatsu.utils.IdlingDetector
 import org.koitharu.kotatsu.utils.ShareHelper
 import org.koitharu.kotatsu.utils.ext.hasGlobalPoint
+import org.koitharu.kotatsu.utils.ext.isRtl
 import org.koitharu.kotatsu.utils.ext.observeWithPrevious
 import org.koitharu.kotatsu.utils.ext.postDelayed
 import org.koitharu.kotatsu.utils.ext.setValueRounded
@@ -156,6 +157,7 @@ class ReaderActivity :
 		if (binding.appbarTop.isVisible) {
 			lifecycle.postDelayed(hideUiRunnable, TimeUnit.SECONDS.toMillis(1))
 		}
+		binding.slider.isRtl = mode == ReaderMode.REVERSED
 	}
 
 	override fun onCreateOptionsMenu(menu: Menu): Boolean {
@@ -407,10 +409,11 @@ class ReaderActivity :
 				.putExtra(MangaIntent.KEY_MANGA, ParcelableManga(manga, withChapters = true))
 		}
 
-		fun newIntent(context: Context, manga: Manga, branch: String?): Intent {
+		fun newIntent(context: Context, manga: Manga, branch: String?, isIncognitoMode: Boolean): Intent {
 			return Intent(context, ReaderActivity::class.java)
 				.putExtra(MangaIntent.KEY_MANGA, ParcelableManga(manga, withChapters = true))
 				.putExtra(EXTRA_BRANCH, branch)
+				.putExtra(EXTRA_INCOGNITO, isIncognitoMode)
 		}
 
 		fun newIntent(context: Context, manga: Manga, state: ReaderState?): Intent {

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

@@ -1,5 +1,6 @@
 package org.koitharu.kotatsu.reader.ui
 
+import android.annotation.SuppressLint
 import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
@@ -179,6 +180,7 @@ class ReaderInfoBarView @JvmOverloads constructor(
 		}
 	}
 
+	@SuppressLint("DiscouragedApi")
 	private fun getSystemUiDimensionOffset(name: String, fallback: Int = 0): Int = runCatching {
 		val manager = context.packageManager
 		val resources = manager.getResourcesForApplication("com.android.systemui")

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

@@ -4,7 +4,7 @@ import androidx.annotation.IdRes
 import androidx.fragment.app.FragmentManager
 import androidx.fragment.app.commit
 import org.koitharu.kotatsu.core.prefs.ReaderMode
-import org.koitharu.kotatsu.reader.ui.pager.BaseReader
+import org.koitharu.kotatsu.reader.ui.pager.BaseReaderFragment
 import org.koitharu.kotatsu.reader.ui.pager.reversed.ReversedReaderFragment
 import org.koitharu.kotatsu.reader.ui.pager.standard.PagerReaderFragment
 import org.koitharu.kotatsu.reader.ui.pager.webtoon.WebtoonReaderFragment
@@ -15,7 +15,7 @@ class ReaderManager(
 	@IdRes private val containerResId: Int,
 ) {
 
-	private val modeMap = EnumMap<ReaderMode, Class<out BaseReader<*>>>(ReaderMode::class.java)
+	private val modeMap = EnumMap<ReaderMode, Class<out BaseReaderFragment<*>>>(ReaderMode::class.java)
 
 	init {
 		modeMap[ReaderMode.STANDARD] = PagerReaderFragment::class.java
@@ -23,8 +23,8 @@ class ReaderManager(
 		modeMap[ReaderMode.WEBTOON] = WebtoonReaderFragment::class.java
 	}
 
-	val currentReader: BaseReader<*>?
-		get() = fragmentManager.findFragmentById(containerResId) as? BaseReader<*>
+	val currentReader: BaseReaderFragment<*>?
+		get() = fragmentManager.findFragmentById(containerResId) as? BaseReaderFragment<*>
 
 	val currentMode: ReaderMode?
 		get() {
@@ -40,7 +40,7 @@ class ReaderManager(
 		}
 	}
 
-	fun replace(reader: BaseReader<*>) {
+	fun replace(reader: BaseReaderFragment<*>) {
 		fragmentManager.commit {
 			setReorderingAllowed(true)
 			replace(containerResId, reader)

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

@@ -19,6 +19,8 @@ import kotlinx.coroutines.ensureActive
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.filterNotNull
+import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.flow.flatMapLatest
 import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.flow.launchIn
@@ -34,6 +36,7 @@ import org.koitharu.kotatsu.base.domain.MangaIntent
 import org.koitharu.kotatsu.base.ui.BaseViewModel
 import org.koitharu.kotatsu.bookmarks.domain.Bookmark
 import org.koitharu.kotatsu.bookmarks.domain.BookmarksRepository
+import org.koitharu.kotatsu.core.os.ShortcutsUpdater
 import org.koitharu.kotatsu.core.parser.MangaRepository
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.prefs.ReaderMode
@@ -75,6 +78,7 @@ class ReaderViewModel @Inject constructor(
 	private val pageSaveHelper: PageSaveHelper,
 	private val pageLoader: PageLoader,
 	private val chaptersLoader: ChaptersLoader,
+	private val shortcutsUpdater: ShortcutsUpdater,
 ) : BaseViewModel() {
 
 	private val intent = MangaIntent(savedStateHandle)
@@ -149,6 +153,10 @@ class ReaderViewModel @Inject constructor(
 			.onEach { key ->
 				if (key == AppSettings.KEY_READER_SLIDER) notifyStateChanged()
 			}.launchIn(viewModelScope + Dispatchers.Default)
+		launchJob(Dispatchers.Default) {
+			val mangaId = mangaData.filterNotNull().first().id
+			shortcutsUpdater.notifyMangaOpened(mangaId)
+		}
 	}
 
 	fun reload() {
@@ -244,6 +252,7 @@ class ReaderViewModel @Inject constructor(
 		val prevJob = stateChangeJob
 		stateChangeJob = launchJob(Dispatchers.Default) {
 			prevJob?.cancelAndJoin()
+			loadingJob?.join()
 			val pages = content.value?.pages ?: return@launchJob
 			pages.getOrNull(position)?.let { page ->
 				currentState.update { cs ->
@@ -255,12 +264,12 @@ class ReaderViewModel @Inject constructor(
 				return@launchJob
 			}
 			ensureActive()
-			if (position <= BOUNDS_PAGE_OFFSET) {
-				loadPrevNextChapter(pages.first().chapterId, isNext = false)
-			}
 			if (position >= pages.lastIndex - BOUNDS_PAGE_OFFSET) {
 				loadPrevNextChapter(pages.last().chapterId, isNext = true)
 			}
+			if (position <= BOUNDS_PAGE_OFFSET) {
+				loadPrevNextChapter(pages.first().chapterId, isNext = false)
+			}
 			if (pageLoader.isPrefetchApplicable()) {
 				pageLoader.prefetch(pages.trySublist(position + 1, position + PREFETCH_LIMIT))
 			}
@@ -340,7 +349,9 @@ class ReaderViewModel @Inject constructor(
 
 	@AnyThread
 	private fun loadPrevNextChapter(currentId: Long, isNext: Boolean) {
+		val prevJob = loadingJob
 		loadingJob = launchLoadingJob(Dispatchers.Default) {
+			prevJob?.join()
 			chaptersLoader.loadPrevNextChapter(mangaData.requireValue(), currentId, isNext)
 			content.emitValue(ReaderContent(chaptersLoader.snapshot(), null))
 		}

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

@@ -11,7 +11,6 @@ import androidx.core.view.isGone
 import androidx.core.view.isVisible
 import androidx.fragment.app.FragmentManager
 import androidx.fragment.app.activityViewModels
-import androidx.lifecycle.flowWithLifecycle
 import androidx.lifecycle.lifecycleScope
 import com.google.android.material.button.MaterialButtonToggleGroup
 import com.google.android.material.slider.Slider
@@ -148,8 +147,8 @@ class ReaderConfigBottomSheet :
 		}
 	}
 
-	override fun onActivityResult(uri: Uri?) {
-		viewModel.onActivityResult(uri)
+	override fun onActivityResult(result: Uri?) {
+		viewModel.onActivityResult(result)
 		dismissAllowingStateLoss()
 	}
 
@@ -157,7 +156,6 @@ class ReaderConfigBottomSheet :
 		val helper = ScreenOrientationHelper(requireActivity())
 		orientationHelper = helper
 		helper.observeAutoOrientation()
-			.flowWithLifecycle(lifecycle)
 			.onEach {
 				binding.buttonScreenRotate.isGone = it
 			}.launchIn(viewLifecycleScope)

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

@@ -12,7 +12,7 @@ import org.koitharu.kotatsu.utils.ext.getParcelableCompat
 
 private const val KEY_STATE = "state"
 
-abstract class BaseReader<B : ViewBinding> : BaseFragment<B>() {
+abstract class BaseReaderFragment<B : ViewBinding> : BaseFragment<B>() {
 
 	protected val viewModel by activityViewModels<ReaderViewModel>()
 	private var stateToSave: ReaderState? = null

app/src/main/java/org/koitharu/kotatsu/reader/ui/pager/reversed/ReversedReaderFragment.kt

@@ -13,8 +13,8 @@ import org.koitharu.kotatsu.core.os.NetworkState
 import org.koitharu.kotatsu.databinding.FragmentReaderStandardBinding
 import org.koitharu.kotatsu.reader.domain.PageLoader
 import org.koitharu.kotatsu.reader.ui.ReaderState
-import org.koitharu.kotatsu.reader.ui.pager.BaseReader
 import org.koitharu.kotatsu.reader.ui.pager.BaseReaderAdapter
+import org.koitharu.kotatsu.reader.ui.pager.BaseReaderFragment
 import org.koitharu.kotatsu.reader.ui.pager.ReaderPage
 import org.koitharu.kotatsu.reader.ui.pager.standard.PagerReaderFragment
 import org.koitharu.kotatsu.utils.ext.doOnPageChanged
@@ -26,7 +26,7 @@ import javax.inject.Inject
 import kotlin.math.absoluteValue
 
 @AndroidEntryPoint
-class ReversedReaderFragment : BaseReader<FragmentReaderStandardBinding>() {
+class ReversedReaderFragment : BaseReaderFragment<FragmentReaderStandardBinding>() {
 
 	@Inject
 	lateinit var networkState: NetworkState
@@ -70,6 +70,7 @@ class ReversedReaderFragment : BaseReader<FragmentReaderStandardBinding>() {
 
 	override fun onDestroyView() {
 		pagerAdapter = null
+		binding.pager.adapter = null
 		super.onDestroyView()
 	}
 

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

@@ -33,7 +33,9 @@ open class PageHolder(
 		binding.ssiv.bindToLifecycle(owner)
 		binding.ssiv.isEagerLoadingEnabled = !isLowRamDevice(context)
 		binding.ssiv.addOnImageEventListener(delegate)
+		@Suppress("LeakingThis")
 		bindingInfo.buttonRetry.setOnClickListener(this)
+		@Suppress("LeakingThis")
 		bindingInfo.buttonErrorDetails.setOnClickListener(this)
 		binding.textViewNumber.isVisible = settings.isPagesNumbersEnabled
 	}

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

@@ -13,8 +13,8 @@ import org.koitharu.kotatsu.core.os.NetworkState
 import org.koitharu.kotatsu.databinding.FragmentReaderStandardBinding
 import org.koitharu.kotatsu.reader.domain.PageLoader
 import org.koitharu.kotatsu.reader.ui.ReaderState
-import org.koitharu.kotatsu.reader.ui.pager.BaseReader
 import org.koitharu.kotatsu.reader.ui.pager.BaseReaderAdapter
+import org.koitharu.kotatsu.reader.ui.pager.BaseReaderFragment
 import org.koitharu.kotatsu.reader.ui.pager.ReaderPage
 import org.koitharu.kotatsu.utils.ext.doOnPageChanged
 import org.koitharu.kotatsu.utils.ext.isAnimationsEnabled
@@ -25,7 +25,7 @@ import javax.inject.Inject
 import kotlin.math.absoluteValue
 
 @AndroidEntryPoint
-class PagerReaderFragment : BaseReader<FragmentReaderStandardBinding>() {
+class PagerReaderFragment : BaseReaderFragment<FragmentReaderStandardBinding>() {
 
 	@Inject
 	lateinit var networkState: NetworkState
@@ -69,6 +69,7 @@ class PagerReaderFragment : BaseReader<FragmentReaderStandardBinding>() {
 
 	override fun onDestroyView() {
 		pagesAdapter = null
+		binding.pager.adapter = null
 		super.onDestroyView()
 	}
 

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

@@ -12,8 +12,8 @@ import org.koitharu.kotatsu.core.os.NetworkState
 import org.koitharu.kotatsu.databinding.FragmentReaderWebtoonBinding
 import org.koitharu.kotatsu.reader.domain.PageLoader
 import org.koitharu.kotatsu.reader.ui.ReaderState
-import org.koitharu.kotatsu.reader.ui.pager.BaseReader
 import org.koitharu.kotatsu.reader.ui.pager.BaseReaderAdapter
+import org.koitharu.kotatsu.reader.ui.pager.BaseReaderFragment
 import org.koitharu.kotatsu.reader.ui.pager.ReaderPage
 import org.koitharu.kotatsu.utils.ext.findCenterViewPosition
 import org.koitharu.kotatsu.utils.ext.firstVisibleItemPosition
@@ -22,7 +22,7 @@ import org.koitharu.kotatsu.utils.ext.viewLifecycleScope
 import javax.inject.Inject
 
 @AndroidEntryPoint
-class WebtoonReaderFragment : BaseReader<FragmentReaderWebtoonBinding>() {
+class WebtoonReaderFragment : BaseReaderFragment<FragmentReaderWebtoonBinding>() {
 
 	@Inject
 	lateinit var networkState: NetworkState
@@ -60,6 +60,7 @@ class WebtoonReaderFragment : BaseReader<FragmentReaderWebtoonBinding>() {
 
 	override fun onDestroyView() {
 		webtoonAdapter = null
+		binding.recyclerView.adapter = null
 		super.onDestroyView()
 	}
 

app/src/main/java/org/koitharu/kotatsu/remotelist/ui/RemoteListViewModel.kt

@@ -21,6 +21,7 @@ import org.koitharu.kotatsu.core.parser.MangaRepository
 import org.koitharu.kotatsu.core.parser.MangaTagHighlighter
 import org.koitharu.kotatsu.core.parser.RemoteMangaRepository
 import org.koitharu.kotatsu.core.prefs.AppSettings
+import org.koitharu.kotatsu.download.ui.worker.DownloadWorker
 import org.koitharu.kotatsu.list.ui.MangaListViewModel
 import org.koitharu.kotatsu.list.ui.filter.FilterCoordinator
 import org.koitharu.kotatsu.list.ui.filter.FilterItem
@@ -53,7 +54,8 @@ class RemoteListViewModel @Inject constructor(
 	settings: AppSettings,
 	dataRepository: MangaDataRepository,
 	private val tagHighlighter: MangaTagHighlighter,
-) : MangaListViewModel(settings), OnFilterChangedListener {
+	downloadScheduler: DownloadWorker.Scheduler,
+) : MangaListViewModel(settings, downloadScheduler), OnFilterChangedListener {
 
 	val source = savedStateHandle.require<MangaSource>(RemoteListFragment.ARG_SOURCE)
 	private val repository = mangaRepositoryFactory.create(source) as RemoteMangaRepository

app/src/main/java/org/koitharu/kotatsu/scrobbling/anilist/data/AniListRepository.kt

@@ -241,6 +241,7 @@ class AniListRepository(
 		descriptionHtml = json.getString("description"),
 	)
 
+	@Suppress("FunctionName")
 	private fun AniListUser(json: JSONObject) = ScrobblerUser(
 		id = json.getLong("id"),
 		nickname = json.getString("name"),

app/src/main/java/org/koitharu/kotatsu/scrobbling/mal/data/MALRepository.kt

@@ -200,6 +200,7 @@ class MALRepository(
 		descriptionHtml = json.getString("synopsis"),
 	)
 
+	@Suppress("FunctionName")
 	private fun MALUser(json: JSONObject) = ScrobblerUser(
 		id = json.getLong("id"),
 		nickname = json.getString("name"),

app/src/main/java/org/koitharu/kotatsu/scrobbling/shikimori/data/ShikimoriRepository.kt

@@ -207,6 +207,7 @@ class ShikimoriRepository(
 		descriptionHtml = json.getString("description_html"),
 	)
 
+	@Suppress("FunctionName")
 	private fun ShikimoriUser(json: JSONObject) = ScrobblerUser(
 		id = json.getLong("id"),
 		nickname = json.getString("nickname"),

app/src/main/java/org/koitharu/kotatsu/search/ui/SearchViewModel.kt

@@ -12,6 +12,7 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.parser.MangaRepository
 import org.koitharu.kotatsu.core.parser.MangaTagHighlighter
 import org.koitharu.kotatsu.core.prefs.AppSettings
+import org.koitharu.kotatsu.download.ui.worker.DownloadWorker
 import org.koitharu.kotatsu.list.ui.MangaListViewModel
 import org.koitharu.kotatsu.list.ui.model.EmptyState
 import org.koitharu.kotatsu.list.ui.model.ListModel
@@ -31,7 +32,8 @@ class SearchViewModel @Inject constructor(
 	repositoryFactory: MangaRepository.Factory,
 	settings: AppSettings,
 	private val tagHighlighter: MangaTagHighlighter,
-) : MangaListViewModel(settings) {
+	downloadScheduler: DownloadWorker.Scheduler,
+) : MangaListViewModel(settings, downloadScheduler) {
 
 	private val query = savedStateHandle.require<String>(SearchFragment.ARG_QUERY)
 	private val repository = repositoryFactory.create(savedStateHandle.require(SearchFragment.ARG_SOURCE))

app/src/main/java/org/koitharu/kotatsu/search/ui/multi/MultiSearchActivity.kt

@@ -17,10 +17,11 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.base.ui.BaseActivity
 import org.koitharu.kotatsu.base.ui.list.ListSelectionController
 import org.koitharu.kotatsu.base.ui.list.OnListItemClickListener
+import org.koitharu.kotatsu.core.exceptions.resolve.SnackbarErrorObserver
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.databinding.ActivitySearchMultiBinding
 import org.koitharu.kotatsu.details.ui.DetailsActivity
-import org.koitharu.kotatsu.download.ui.service.DownloadService
+import org.koitharu.kotatsu.download.ui.worker.DownloadStartedObserver
 import org.koitharu.kotatsu.favourites.ui.categories.select.FavouriteCategoriesBottomSheet
 import org.koitharu.kotatsu.list.ui.ItemSizeResolver
 import org.koitharu.kotatsu.list.ui.MangaSelectionDecoration
@@ -89,6 +90,8 @@ class MultiSearchActivity :
 
 		viewModel.query.observe(this) { title = it }
 		viewModel.list.observe(this) { adapter.items = it }
+		viewModel.onError.observe(this, SnackbarErrorObserver(binding.recyclerView, null))
+		viewModel.onDownloadStarted.observe(this, DownloadStartedObserver(binding.recyclerView))
 	}
 
 	override fun onWindowInsetsChanged(insets: Insets) {
@@ -162,7 +165,7 @@ class MultiSearchActivity :
 			}
 
 			R.id.action_save -> {
-				DownloadService.confirmAndStart(binding.recyclerView, collectSelectedItems())
+				viewModel.download(collectSelectedItems())
 				mode.finish()
 				true
 			}

app/src/main/java/org/koitharu/kotatsu/search/ui/multi/MultiSearchViewModel.kt

@@ -20,6 +20,7 @@ import org.koitharu.kotatsu.core.exceptions.CompositeException
 import org.koitharu.kotatsu.core.parser.MangaRepository
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.prefs.ListMode
+import org.koitharu.kotatsu.download.ui.worker.DownloadWorker
 import org.koitharu.kotatsu.list.ui.model.EmptyState
 import org.koitharu.kotatsu.list.ui.model.ListModel
 import org.koitharu.kotatsu.list.ui.model.LoadingFooter
@@ -27,6 +28,7 @@ import org.koitharu.kotatsu.list.ui.model.LoadingState
 import org.koitharu.kotatsu.list.ui.model.toErrorState
 import org.koitharu.kotatsu.list.ui.model.toUi
 import org.koitharu.kotatsu.parsers.model.Manga
+import org.koitharu.kotatsu.utils.SingleLiveEvent
 import org.koitharu.kotatsu.utils.asFlowLiveData
 import org.koitharu.kotatsu.utils.ext.emitValue
 import org.koitharu.kotatsu.utils.ext.printStackTraceDebug
@@ -41,12 +43,14 @@ class MultiSearchViewModel @Inject constructor(
 	savedStateHandle: SavedStateHandle,
 	private val settings: AppSettings,
 	private val mangaRepositoryFactory: MangaRepository.Factory,
+	private val downloadScheduler: DownloadWorker.Scheduler,
 ) : BaseViewModel() {
 
 	private var searchJob: Job? = null
 	private val listData = MutableStateFlow<List<MultiSearchListModel>>(emptyList())
 	private val loadingData = MutableStateFlow(false)
 	private var listError = MutableStateFlow<Throwable?>(null)
+	val onDownloadStarted = SingleLiveEvent<Unit>()
 
 	val query = MutableLiveData(savedStateHandle.get<String>(MultiSearchActivity.EXTRA_QUERY).orEmpty())
 	val list: LiveData<List<ListModel>> = combine(
@@ -109,6 +113,13 @@ class MultiSearchViewModel @Inject constructor(
 		}
 	}
 
+	fun download(items: Set<Manga>) {
+		launchJob(Dispatchers.Default) {
+			downloadScheduler.schedule(items)
+			onDownloadStarted.emitCall(Unit)
+		}
+	}
+
 	private suspend fun searchImpl(q: String) = coroutineScope {
 		val sources = settings.getMangaSources(includeHidden = false)
 		val dispatcher = Dispatchers.Default.limitedParallelism(MAX_PARALLELISM)

app/src/main/java/org/koitharu/kotatsu/settings/ContentSettingsFragment.kt

@@ -7,17 +7,20 @@ import androidx.preference.ListPreference
 import androidx.preference.Preference
 import com.google.android.material.snackbar.Snackbar
 import dagger.hilt.android.AndroidEntryPoint
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.base.ui.BasePreferenceFragment
 import org.koitharu.kotatsu.base.ui.dialog.StorageSelectDialog
 import org.koitharu.kotatsu.core.cache.ContentCache
 import org.koitharu.kotatsu.core.network.DoHProvider
 import org.koitharu.kotatsu.core.prefs.AppSettings
+import org.koitharu.kotatsu.download.ui.worker.DownloadWorker
 import org.koitharu.kotatsu.local.data.LocalStorageManager
 import org.koitharu.kotatsu.parsers.util.names
-import org.koitharu.kotatsu.settings.utils.SliderPreference
 import org.koitharu.kotatsu.utils.ext.getStorageName
+import org.koitharu.kotatsu.utils.ext.printStackTraceDebug
 import org.koitharu.kotatsu.utils.ext.setDefaultValueCompat
 import org.koitharu.kotatsu.utils.ext.viewLifecycleScope
 import java.io.File
@@ -35,16 +38,12 @@ class ContentSettingsFragment :
 	@Inject
 	lateinit var contentCache: ContentCache
 
+	@Inject
+	lateinit var downloadsScheduler: DownloadWorker.Scheduler
+
 	override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
 		addPreferencesFromResource(R.xml.pref_content)
 		findPreference<Preference>(AppSettings.KEY_PREFETCH_CONTENT)?.isVisible = contentCache.isCachingEnabled
-		findPreference<SliderPreference>(AppSettings.KEY_DOWNLOADS_PARALLELISM)?.run {
-			summary = value.toString()
-			setOnPreferenceChangeListener { preference, newValue ->
-				preference.summary = newValue.toString()
-				true
-			}
-		}
 		findPreference<ListPreference>(AppSettings.KEY_DOH)?.run {
 			entryValues = arrayOf(
 				DoHProvider.NONE,
@@ -87,6 +86,10 @@ class ContentSettingsFragment :
 				bindRemoteSourcesSummary()
 			}
 
+			AppSettings.KEY_DOWNLOADS_WIFI -> {
+				updateDownloadsConstraints()
+			}
+
 			AppSettings.KEY_SSL_BYPASS -> {
 				Snackbar.make(listView, R.string.settings_apply_restart_required, Snackbar.LENGTH_INDEFINITE).show()
 			}
@@ -126,4 +129,20 @@ class ContentSettingsFragment :
 			summary = getString(R.string.enabled_d_of_d, total - settings.hiddenSources.size, total)
 		}
 	}
+
+	private fun updateDownloadsConstraints() {
+		val preference = findPreference<Preference>(AppSettings.KEY_DOWNLOADS_WIFI)
+		viewLifecycleScope.launch {
+			try {
+				preference?.isEnabled = false
+				withContext(Dispatchers.Default) {
+					downloadsScheduler.updateConstraints()
+				}
+			} catch (e: Exception) {
+				e.printStackTraceDebug()
+			} finally {
+				preference?.isEnabled = true
+			}
+		}
+	}
 }

app/src/main/java/org/koitharu/kotatsu/settings/DomainValidator.kt

@@ -1,20 +1,17 @@
 package org.koitharu.kotatsu.settings
 
 import okhttp3.HttpUrl
-import okhttp3.internal.toCanonicalHost
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.utils.EditTextValidator
 
 class DomainValidator : EditTextValidator() {
 
-	private val urlBuilder = HttpUrl.Builder()
-
 	override fun validate(text: String): ValidationResult {
 		val trimmed = text.trim()
 		if (trimmed.isEmpty()) {
 			return ValidationResult.Success
 		}
-		return if (!checkCharacters(trimmed) || trimmed.toCanonicalHost() == null) {
+		return if (!checkCharacters(trimmed)) {
 			ValidationResult.Failed(context.getString(R.string.invalid_domain_message))
 		} else {
 			ValidationResult.Success
@@ -22,6 +19,12 @@ class DomainValidator : EditTextValidator() {
 	}
 
 	private fun checkCharacters(value: String): Boolean = runCatching {
-		urlBuilder.host(value)
+		val parts = value.split(':')
+		require(parts.size <= 2)
+		val urlBuilder = HttpUrl.Builder()
+		urlBuilder.host(parts.first())
+		if (parts.size == 2) {
+			urlBuilder.port(parts[1].toInt())
+		}
 	}.isSuccess
 }

app/src/main/java/org/koitharu/kotatsu/settings/HeaderValidator.kt

@@ -0,0 +1,27 @@
+package org.koitharu.kotatsu.settings
+
+import okhttp3.Headers
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.network.CommonHeaders
+import org.koitharu.kotatsu.utils.EditTextValidator
+
+class HeaderValidator : EditTextValidator() {
+
+	private val headers = Headers.Builder()
+
+	override fun validate(text: String): ValidationResult {
+		val trimmed = text.trim()
+		if (trimmed.isEmpty()) {
+			return ValidationResult.Success
+		}
+		return if (!validateImpl(trimmed)) {
+			ValidationResult.Failed(context.getString(R.string.invalid_value_message))
+		} else {
+			ValidationResult.Success
+		}
+	}
+
+	private fun validateImpl(value: String): Boolean = runCatching {
+		headers[CommonHeaders.USER_AGENT] = value
+	}.isSuccess
+}

app/src/main/java/org/koitharu/kotatsu/settings/HistorySettingsFragment.kt

@@ -8,7 +8,10 @@ import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.google.android.material.snackbar.Snackbar
 import dagger.hilt.android.AndroidEntryPoint
 import kotlinx.coroutines.CancellationException
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.runInterruptible
+import okhttp3.Cache
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.base.ui.BasePreferenceFragment
 import org.koitharu.kotatsu.core.network.cookies.MutableCookieJar
@@ -39,6 +42,9 @@ class HistorySettingsFragment : BasePreferenceFragment(R.string.history_and_cach
 	@Inject
 	lateinit var cookieJar: MutableCookieJar
 
+	@Inject
+	lateinit var cache: Cache
+
 	@Inject
 	lateinit var shortcutsUpdater: ShortcutsUpdater
 
@@ -52,6 +58,7 @@ class HistorySettingsFragment : BasePreferenceFragment(R.string.history_and_cach
 		super.onViewCreated(view, savedInstanceState)
 		findPreference<Preference>(AppSettings.KEY_PAGES_CACHE_CLEAR)?.bindSummaryToCacheSize(CacheDir.PAGES)
 		findPreference<Preference>(AppSettings.KEY_THUMBS_CACHE_CLEAR)?.bindSummaryToCacheSize(CacheDir.THUMBS)
+		findPreference<Preference>(AppSettings.KEY_HTTP_CACHE_CLEAR)?.bindSummaryToHttpCacheSize()
 		findPreference<Preference>(AppSettings.KEY_SEARCH_HISTORY_CLEAR)?.let { pref ->
 			viewLifecycleScope.launch {
 				lifecycle.awaitStateAtLeast(Lifecycle.State.RESUMED)
@@ -90,6 +97,11 @@ class HistorySettingsFragment : BasePreferenceFragment(R.string.history_and_cach
 				true
 			}
 
+			AppSettings.KEY_HTTP_CACHE_CLEAR -> {
+				clearHttpCache()
+				true
+			}
+
 			AppSettings.KEY_UPDATES_FEED_CLEAR -> {
 				viewLifecycleScope.launch {
 					trackerRepo.clearLogs()
@@ -131,6 +143,32 @@ class HistorySettingsFragment : BasePreferenceFragment(R.string.history_and_cach
 		summary = FileSize.BYTES.format(context, size)
 	}
 
+	private fun Preference.bindSummaryToHttpCacheSize() = viewLifecycleScope.launch {
+		val size = runInterruptible(Dispatchers.IO) { cache.size() }
+		summary = FileSize.BYTES.format(context, size)
+	}
+
+	private fun clearHttpCache() {
+		val preference = findPreference<Preference>(AppSettings.KEY_HTTP_CACHE_CLEAR) ?: return
+		val ctx = preference.context.applicationContext
+		viewLifecycleScope.launch {
+			try {
+				preference.isEnabled = false
+				val size = runInterruptible(Dispatchers.IO) {
+					cache.evictAll()
+					cache.size()
+				}
+				preference.summary = FileSize.BYTES.format(ctx, size)
+			} catch (e: CancellationException) {
+				throw e
+			} catch (e: Exception) {
+				preference.summary = e.getDisplayMessage(ctx.resources)
+			} finally {
+				preference.isEnabled = true
+			}
+		}
+	}
+
 	private fun clearSearchHistory(preference: Preference) {
 		MaterialAlertDialogBuilder(context ?: return)
 			.setTitle(R.string.clear_search_history)