Fix network state observer

Currently translated at 87.5% (7 of 8 strings)

Co-authored-by: Cường Bá <cuongba956@gmail.com>
Translate-URL: https://hosted.weblate.org/projects/kotatsu/plurals/vi/
Translation: Kotatsu/plurals

README.md

@@ -26,7 +26,7 @@ Download APK directly from GitHub:
 * Notifications about new chapters with updates feed
 * Shikimori integration (manga tracking)
 * Password/fingerprint protect access to the app
-* History and favourites synchronization across devices (coming soon)
+* History and favourites [synchronization](https://github.com/KotatsuApp/kotatsu-syncserver) across devices
 
 ### Screenshots
 

app/build.gradle

@@ -15,8 +15,8 @@ android {
 		applicationId 'org.koitharu.kotatsu'
 		minSdkVersion 21
 		targetSdkVersion 33
-		versionCode 503
-		versionName '4.0.3'
+		versionCode 505
+		versionName '4.0.5'
 		generatedDensities = []
 		testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 
@@ -83,7 +83,7 @@ afterEvaluate {
 	}
 }
 dependencies {
-	implementation('com.github.KotatsuApp:kotatsu-parsers:bf8a1f3db2') {
+	implementation('com.github.KotatsuApp:kotatsu-parsers:2ab03cb668') {
 		exclude group: 'org.json', module: 'json'
 	}
 
@@ -118,8 +118,8 @@ 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:2.44"
-	kapt "com.google.dagger:hilt-compiler:2.44"
+	implementation 'com.google.dagger:hilt-android:2.44.2'
+	kapt 'com.google.dagger:hilt-compiler:2.44.2'
 	implementation 'androidx.hilt:hilt-work:1.0.0'
 	kapt 'androidx.hilt:hilt-compiler:1.0.0'
 
@@ -128,25 +128,25 @@ dependencies {
 	implementation 'com.github.KotatsuApp:subsampling-scale-image-view:f8a38b08fe'
 	implementation 'com.github.solkin:disk-lru-cache:1.4'
 
-	implementation 'ch.acra:acra-http:5.9.6'
-	implementation 'ch.acra:acra-dialog:5.9.6'
+	implementation 'ch.acra:acra-http:5.9.7'
+	implementation 'ch.acra:acra-dialog:5.9.7'
 
-	debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.9.1'
+	debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.10'
 
 	testImplementation 'junit:junit:4.13.2'
 	testImplementation 'org.json:json:20220924'
 	testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.4'
 
-	androidTestImplementation 'androidx.test:runner:1.4.0'
-	androidTestImplementation 'androidx.test:rules:1.4.0'
-	androidTestImplementation 'androidx.test:core-ktx:1.4.0'
-	androidTestImplementation 'androidx.test.ext:junit-ktx:1.1.3'
+	androidTestImplementation 'androidx.test:runner:1.5.1'
+	androidTestImplementation 'androidx.test:rules:1.5.0'
+	androidTestImplementation 'androidx.test:core-ktx:1.5.0'
+	androidTestImplementation 'androidx.test.ext:junit-ktx:1.1.4'
 
 	androidTestImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.4'
 
 	androidTestImplementation 'androidx.room:room-testing:2.4.3'
 	androidTestImplementation 'com.squareup.moshi:moshi-kotlin:1.14.0'
 
-	androidTestImplementation 'com.google.dagger:hilt-android-testing:2.44'
-	kaptAndroidTest 'com.google.dagger:hilt-android-compiler:2.44'
+	androidTestImplementation 'com.google.dagger:hilt-android-testing:2.44.2'
+	kaptAndroidTest 'com.google.dagger:hilt-android-compiler:2.44.2'
 }

app/src/main/AndroidManifest.xml

@@ -28,6 +28,7 @@
 		android:fullBackupOnly="true"
 		android:icon="@mipmap/ic_launcher"
 		android:label="@string/app_name"
+		android:largeHeap="true"
 		android:networkSecurityConfig="@xml/network_security_config"
 		android:roundIcon="@mipmap/ic_launcher_round"
 		android:supportsRtl="true"

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

@@ -2,20 +2,20 @@ package org.koitharu.kotatsu.base.ui.list
 
 import android.app.Activity
 import android.os.Bundle
-import android.util.ArrayMap
 import android.view.Menu
 import android.view.MenuItem
 import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.view.ActionMode
+import androidx.collection.ArrayMap
 import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.LifecycleEventObserver
 import androidx.lifecycle.LifecycleOwner
 import androidx.recyclerview.widget.RecyclerView
 import androidx.savedstate.SavedStateRegistry
 import androidx.savedstate.SavedStateRegistryOwner
-import kotlin.coroutines.EmptyCoroutineContext
 import kotlinx.coroutines.Dispatchers
 import org.koitharu.kotatsu.base.ui.list.decor.AbstractSelectionItemDecoration
+import kotlin.coroutines.EmptyCoroutineContext
 
 private const val PROVIDER_NAME = "selection_decoration_sectioned"
 

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

@@ -25,6 +25,7 @@ import org.koitharu.kotatsu.BuildConfig
 import org.koitharu.kotatsu.base.ui.util.ActivityRecreationHandle
 import org.koitharu.kotatsu.core.db.MangaDatabase
 import org.koitharu.kotatsu.core.network.*
+import org.koitharu.kotatsu.core.os.NetworkState
 import org.koitharu.kotatsu.core.os.ShortcutsUpdater
 import org.koitharu.kotatsu.core.parser.MangaLoaderContextImpl
 import org.koitharu.kotatsu.core.parser.MangaRepository
@@ -39,6 +40,7 @@ import org.koitharu.kotatsu.search.ui.MangaSuggestionsProvider
 import org.koitharu.kotatsu.settings.backup.BackupObserver
 import org.koitharu.kotatsu.sync.domain.SyncController
 import org.koitharu.kotatsu.utils.IncognitoModeIndicator
+import org.koitharu.kotatsu.utils.ext.connectivityManager
 import org.koitharu.kotatsu.utils.ext.isLowRamDevice
 import org.koitharu.kotatsu.utils.image.CoilImageGetter
 import org.koitharu.kotatsu.widget.WidgetUpdater
@@ -81,6 +83,12 @@ interface AppModule {
 			}.build()
 		}
 
+		@Provides
+		@Singleton
+		fun provideNetworkState(
+			@ApplicationContext context: Context
+		) = NetworkState(context.connectivityManager)
+
 		@Provides
 		@Singleton
 		fun provideMangaDatabase(

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

@@ -14,11 +14,11 @@ abstract class MangaDao {
 	abstract suspend fun find(id: Long): MangaWithTags?
 
 	@Transaction
-	@Query("SELECT * FROM manga WHERE title LIKE :query OR alt_title LIKE :query LIMIT :limit")
+	@Query("SELECT * FROM manga WHERE (title LIKE :query OR alt_title LIKE :query) AND manga_id IN (SELECT manga_id FROM favourites UNION SELECT manga_id FROM history) LIMIT :limit")
 	abstract suspend fun searchByTitle(query: String, limit: Int): List<MangaWithTags>
 
 	@Transaction
-	@Query("SELECT * FROM manga WHERE (title LIKE :query OR alt_title LIKE :query) AND source = :source LIMIT :limit")
+	@Query("SELECT * FROM manga WHERE (title LIKE :query OR alt_title LIKE :query) AND source = :source AND manga_id IN (SELECT manga_id FROM favourites UNION SELECT manga_id FROM history) LIMIT :limit")
 	abstract suspend fun searchByTitle(query: String, source: String, limit: Int): List<MangaWithTags>
 
 	@Insert(onConflict = OnConflictStrategy.IGNORE)
@@ -47,4 +47,4 @@ abstract class MangaDao {
 			}
 		}
 	}
-}
+}

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

@@ -1,14 +1,11 @@
 package org.koitharu.kotatsu.core.exceptions.resolve
 
-import android.util.ArrayMap
 import androidx.activity.result.ActivityResultCallback
 import androidx.activity.result.ActivityResultLauncher
 import androidx.annotation.StringRes
+import androidx.collection.ArrayMap
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentActivity
-import kotlin.coroutines.Continuation
-import kotlin.coroutines.resume
-import kotlin.coroutines.suspendCoroutine
 import kotlinx.coroutines.suspendCancellableCoroutine
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.browser.BrowserActivity
@@ -20,6 +17,9 @@ import org.koitharu.kotatsu.parsers.model.MangaSource
 import org.koitharu.kotatsu.settings.sources.auth.SourceAuthActivity
 import org.koitharu.kotatsu.utils.TaggedActivityResult
 import org.koitharu.kotatsu.utils.isSuccess
+import kotlin.coroutines.Continuation
+import kotlin.coroutines.resume
+import kotlin.coroutines.suspendCoroutine
 
 class ExceptionResolver private constructor(
 	private val activity: FragmentActivity?,
@@ -49,6 +49,7 @@ class ExceptionResolver private constructor(
 			openInBrowser(e.url)
 			false
 		}
+
 		else -> false
 	}
 

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

@@ -0,0 +1,46 @@
+package org.koitharu.kotatsu.core.os
+
+import android.net.ConnectivityManager
+import android.net.ConnectivityManager.NetworkCallback
+import android.net.Network
+import android.net.NetworkRequest
+import kotlinx.coroutines.flow.first
+import org.koitharu.kotatsu.utils.MediatorStateFlow
+import org.koitharu.kotatsu.utils.ext.isNetworkAvailable
+
+class NetworkState(
+	private val connectivityManager: ConnectivityManager,
+) : MediatorStateFlow<Boolean>(connectivityManager.isNetworkAvailable) {
+
+	private val callback = NetworkCallbackImpl()
+
+	override fun onActive() {
+		invalidate()
+		val request = NetworkRequest.Builder().build()
+		connectivityManager.registerNetworkCallback(request, callback)
+	}
+
+	override fun onInactive() {
+		connectivityManager.unregisterNetworkCallback(callback)
+	}
+
+	suspend fun awaitForConnection() {
+		if (value) {
+			return
+		}
+		first { it }
+	}
+
+	private fun invalidate() {
+		publishValue(connectivityManager.isNetworkAvailable)
+	}
+
+	private inner class NetworkCallbackImpl : NetworkCallback() {
+
+		override fun onAvailable(network: Network) = invalidate()
+
+		override fun onLost(network: Network) = invalidate()
+
+		override fun onUnavailable() = invalidate()
+	}
+}

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

@@ -1,70 +0,0 @@
-package org.koitharu.kotatsu.core.os
-
-import android.content.Context
-import android.net.ConnectivityManager.NetworkCallback
-import android.net.Network
-import android.net.NetworkRequest
-import dagger.hilt.android.qualifiers.ApplicationContext
-import kotlinx.coroutines.channels.ProducerScope
-import kotlinx.coroutines.channels.awaitClose
-import kotlinx.coroutines.channels.onSuccess
-import kotlinx.coroutines.channels.trySendBlocking
-import kotlinx.coroutines.flow.FlowCollector
-import kotlinx.coroutines.flow.StateFlow
-import kotlinx.coroutines.flow.callbackFlow
-import org.koitharu.kotatsu.utils.ext.connectivityManager
-import org.koitharu.kotatsu.utils.ext.isNetworkAvailable
-import javax.inject.Inject
-import javax.inject.Singleton
-
-@Singleton
-class NetworkStateObserver @Inject constructor(
-	@ApplicationContext context: Context,
-) : StateFlow<Boolean> {
-
-	private val connectivityManager = context.connectivityManager
-
-	override val replayCache: List<Boolean>
-		get() = listOf(value)
-
-	override val value: Boolean
-		get() = connectivityManager.isNetworkAvailable
-
-	override suspend fun collect(collector: FlowCollector<Boolean>): Nothing {
-		collector.emit(value)
-		while (true) {
-			observeImpl().collect(collector)
-		}
-	}
-
-	private fun observeImpl() = callbackFlow<Boolean> {
-		val request = NetworkRequest.Builder().build()
-		val callback = FlowNetworkCallback(this)
-		connectivityManager.registerNetworkCallback(request, callback)
-		awaitClose {
-			connectivityManager.unregisterNetworkCallback(callback)
-		}
-	}
-
-	private inner class FlowNetworkCallback(
-		private val producerScope: ProducerScope<Boolean>,
-	) : NetworkCallback() {
-
-		private var prevValue = value
-
-		override fun onAvailable(network: Network) = update()
-
-		override fun onLost(network: Network) = update()
-
-		override fun onUnavailable() = update()
-
-		private fun update() {
-			val newValue = connectivityManager.isNetworkAvailable
-			if (newValue != prevValue) {
-				producerScope.trySendBlocking(newValue).onSuccess {
-					prevValue = newValue
-				}
-			}
-		}
-	}
-}

app/src/main/java/org/koitharu/kotatsu/core/zip/ZipOutput.kt

@@ -115,4 +115,4 @@ class ZipOutput(
 		closeEntry()
 		return true
 	}
-}
+}

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

@@ -17,7 +17,6 @@ import kotlinx.coroutines.NonCancellable
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.launch
-import kotlinx.coroutines.runInterruptible
 import kotlinx.coroutines.sync.Semaphore
 import kotlinx.coroutines.sync.withPermit
 import kotlinx.coroutines.withContext
@@ -36,6 +35,7 @@ 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.printStackTraceDebug
 import org.koitharu.kotatsu.utils.ext.referer
@@ -219,10 +219,8 @@ class DownloadManager @AssistedInject constructor(
 		val call = okHttp.newCall(request)
 		val file = File(destination, tempFileName)
 		val response = call.clone().await()
-		runInterruptible(Dispatchers.IO) {
-			file.outputStream().use { out ->
-				checkNotNull(response.body).byteStream().copyTo(out)
-			}
+		file.outputStream().use { out ->
+			checkNotNull(response.body).byteStream().copyToSuspending(out)
 		}
 		return file
 	}

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

@@ -3,15 +3,17 @@ package org.koitharu.kotatsu.local.data
 import android.content.Context
 import com.tomclaw.cache.DiskLruCache
 import dagger.hilt.android.qualifiers.ApplicationContext
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+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.subdir
+import org.koitharu.kotatsu.utils.ext.takeIfReadable
 import java.io.File
 import java.io.InputStream
 import javax.inject.Inject
 import javax.inject.Singleton
-import kotlinx.coroutines.flow.MutableStateFlow
-import org.koitharu.kotatsu.utils.FileSize
-import org.koitharu.kotatsu.utils.ext.longHashCode
-import org.koitharu.kotatsu.utils.ext.subdir
-import org.koitharu.kotatsu.utils.ext.takeIfReadable
 
 @Singleton
 class PagesCache @Inject constructor(@ApplicationContext context: Context) {
@@ -26,42 +28,15 @@ class PagesCache @Inject constructor(@ApplicationContext context: Context) {
 		return lruCache.get(url)?.takeIfReadable()
 	}
 
-	fun put(url: String, inputStream: InputStream): File {
+	suspend fun put(url: String, inputStream: InputStream): File = withContext(Dispatchers.IO) {
 		val file = File(cacheDir, url.longHashCode().toString())
-		file.outputStream().use { out ->
-			inputStream.copyTo(out)
-		}
-		val res = lruCache.put(url, file)
-		file.delete()
-		return res
-	}
-
-	fun put(
-		url: String,
-		inputStream: InputStream,
-		contentLength: Long,
-		progress: MutableStateFlow<Float>,
-	): File {
-		val file = File(cacheDir, url.longHashCode().toString())
-		file.outputStream().use { out ->
-			var bytesCopied: Long = 0
-			val buffer = ByteArray(DEFAULT_BUFFER_SIZE)
-			var bytes = inputStream.read(buffer)
-			while (bytes >= 0) {
-				out.write(buffer, 0, bytes)
-				bytesCopied += bytes
-				publishProgress(contentLength, bytesCopied, progress)
-				bytes = inputStream.read(buffer)
+		try {
+			file.outputStream().use { out ->
+				inputStream.copyToSuspending(out)
 			}
-		}
-		val res = lruCache.put(url, file)
-		file.delete()
-		return res
-	}
-
-	private fun publishProgress(contentLength: Long, bytesCopied: Long, progress: MutableStateFlow<Float>) {
-		if (contentLength > 0) {
-			progress.value = (bytesCopied.toDouble() / contentLength.toDouble()).toFloat()
+			lruCache.put(url, file)
+		} finally {
+			file.delete()
 		}
 	}
 }

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

@@ -4,7 +4,6 @@ import android.content.Context
 import android.net.Uri
 import android.webkit.MimeTypeMap
 import androidx.documentfile.provider.DocumentFile
-import java.io.File
 import kotlinx.coroutines.NonCancellable
 import kotlinx.coroutines.withContext
 import org.koitharu.kotatsu.local.data.LocalStorageManager
@@ -14,8 +13,10 @@ 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.model.RATING_UNKNOWN
+import org.koitharu.kotatsu.utils.ext.copyToSuspending
 import org.koitharu.kotatsu.utils.ext.deleteAwait
 import org.koitharu.kotatsu.utils.ext.longOf
+import java.io.File
 
 // TODO: Add support for chapters in cbz
 // https://github.com/KotatsuApp/Kotatsu/issues/31
@@ -62,6 +63,7 @@ class DirMangaImporter(
 				file.isDirectory -> {
 					addPages(output, file, path + "/" + file.name, state)
 				}
+
 				file.isFile -> {
 					val tempFile = file.asTempFile()
 					if (!state.hasCover) {
@@ -86,7 +88,7 @@ class DirMangaImporter(
 			"Cannot open input stream for $uri"
 		}.use { input ->
 			file.outputStream().use { output ->
-				input.copyTo(output)
+				input.copyToSuspending(output)
 			}
 		}
 		return file

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

@@ -1,8 +1,6 @@
 package org.koitharu.kotatsu.local.domain.importer
 
 import android.net.Uri
-import java.io.File
-import java.io.IOException
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.runInterruptible
 import kotlinx.coroutines.withContext
@@ -11,7 +9,10 @@ import org.koitharu.kotatsu.local.data.CbzFilter
 import org.koitharu.kotatsu.local.data.LocalStorageManager
 import org.koitharu.kotatsu.local.domain.LocalMangaRepository
 import org.koitharu.kotatsu.parsers.model.Manga
+import org.koitharu.kotatsu.utils.ext.copyToSuspending
 import org.koitharu.kotatsu.utils.ext.resolveName
+import java.io.File
+import java.io.IOException
 
 class ZipMangaImporter(
 	storageManager: LocalStorageManager,
@@ -27,10 +28,10 @@ class ZipMangaImporter(
 			}
 			val dest = File(getOutputDir(), name)
 			runInterruptible {
-				contentResolver.openInputStream(uri)?.use { source ->
-					dest.outputStream().use { output ->
-						source.copyTo(output)
-					}
+				contentResolver.openInputStream(uri)
+			}?.use { source ->
+				dest.outputStream().use { output ->
+					source.copyToSuspending(output)
 				}
 			} ?: throw IOException("Cannot open input stream: $uri")
 			localMangaRepository.getFromFile(dest)

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

@@ -33,6 +33,7 @@ import org.koitharu.kotatsu.parsers.util.await
 import org.koitharu.kotatsu.reader.ui.pager.ReaderPage
 import org.koitharu.kotatsu.utils.ext.connectivityManager
 import org.koitharu.kotatsu.utils.ext.printStackTraceDebug
+import org.koitharu.kotatsu.utils.ext.withProgress
 import org.koitharu.kotatsu.utils.progress.ProgressDeferred
 import java.io.File
 import java.util.LinkedList
@@ -179,9 +180,12 @@ class PageLoader @Inject constructor(
 		val uri = Uri.parse(pageUrl)
 		return if (uri.scheme == "cbz") {
 			runInterruptible(Dispatchers.IO) {
-				val zip = ZipFile(uri.schemeSpecificPart)
-				val entry = zip.getEntry(uri.fragment)
-				zip.getInputStream(entry).use {
+				ZipFile(uri.schemeSpecificPart)
+			}.use { zip ->
+				runInterruptible(Dispatchers.IO) {
+					val entry = zip.getEntry(uri.fragment)
+					zip.getInputStream(entry)
+				}.use {
 					cache.put(pageUrl, it)
 				}
 			}
@@ -200,10 +204,8 @@ class PageLoader @Inject constructor(
 				val body = checkNotNull(response.body) {
 					"Null response"
 				}
-				runInterruptible(Dispatchers.IO) {
-					body.byteStream().use {
-						cache.put(pageUrl, it, body.contentLength(), progress)
-					}
+				body.withProgress(progress).byteStream().use {
+					cache.put(pageUrl, it)
 				}
 			}
 		}

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

@@ -6,10 +6,6 @@ import android.webkit.MimeTypeMap
 import androidx.activity.result.ActivityResultLauncher
 import androidx.core.net.toUri
 import dagger.hilt.android.qualifiers.ApplicationContext
-import java.io.File
-import javax.inject.Inject
-import kotlin.coroutines.Continuation
-import kotlin.coroutines.resume
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.runInterruptible
 import kotlinx.coroutines.suspendCancellableCoroutine
@@ -20,6 +16,11 @@ 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 java.io.File
+import javax.inject.Inject
+import kotlin.coroutines.Continuation
+import kotlin.coroutines.resume
 
 private const val MAX_FILENAME_LENGTH = 10
 private const val EXTENSION_FALLBACK = "png"
@@ -48,12 +49,12 @@ class PageSaveHelper @Inject constructor(
 			}
 		}
 		runInterruptible(Dispatchers.IO) {
-			contentResolver.openOutputStream(destination)?.use { output ->
-				pageFile.inputStream().use { input ->
-					input.copyTo(output)
-				}
-			} ?: throw IOException("Output stream is null")
-		}
+			contentResolver.openOutputStream(destination)
+		}?.use { output ->
+			pageFile.inputStream().use { input ->
+				input.copyToSuspending(output)
+			}
+		} ?: throw IOException("Output stream is null")
 		return destination
 	}
 

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

@@ -5,6 +5,7 @@ import androidx.annotation.CallSuper
 import androidx.recyclerview.widget.RecyclerView
 import androidx.viewbinding.ViewBinding
 import org.koitharu.kotatsu.core.exceptions.resolve.ExceptionResolver
+import org.koitharu.kotatsu.core.os.NetworkState
 import org.koitharu.kotatsu.databinding.LayoutPageInfoBinding
 import org.koitharu.kotatsu.reader.domain.PageLoader
 import org.koitharu.kotatsu.reader.ui.config.ReaderSettings
@@ -13,11 +14,12 @@ abstract class BasePageHolder<B : ViewBinding>(
 	protected val binding: B,
 	loader: PageLoader,
 	settings: ReaderSettings,
+	networkState: NetworkState,
 	exceptionResolver: ExceptionResolver,
 ) : RecyclerView.ViewHolder(binding.root), PageHolderDelegate.Callback {
 
 	@Suppress("LeakingThis")
-	protected val delegate = PageHolderDelegate(loader, settings, this, exceptionResolver)
+	protected val delegate = PageHolderDelegate(loader, settings, this, networkState, exceptionResolver)
 	protected val bindingInfo = LayoutPageInfoBinding.bind(binding.root)
 
 	val context: Context

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

@@ -4,17 +4,19 @@ import android.view.ViewGroup
 import androidx.recyclerview.widget.AsyncListDiffer
 import androidx.recyclerview.widget.DiffUtil
 import androidx.recyclerview.widget.RecyclerView
-import kotlin.coroutines.resume
-import kotlin.coroutines.suspendCoroutine
 import org.koitharu.kotatsu.core.exceptions.resolve.ExceptionResolver
+import org.koitharu.kotatsu.core.os.NetworkState
 import org.koitharu.kotatsu.reader.domain.PageLoader
 import org.koitharu.kotatsu.reader.ui.config.ReaderSettings
 import org.koitharu.kotatsu.utils.ext.resetTransformations
+import kotlin.coroutines.resume
+import kotlin.coroutines.suspendCoroutine
 
 @Suppress("LeakingThis")
 abstract class BaseReaderAdapter<H : BasePageHolder<*>>(
 	private val loader: PageLoader,
 	private val readerSettings: ReaderSettings,
+	private val networkState: NetworkState,
 	private val exceptionResolver: ExceptionResolver,
 ) : RecyclerView.Adapter<H>() {
 
@@ -56,9 +58,9 @@ abstract class BaseReaderAdapter<H : BasePageHolder<*>>(
 	final override fun onCreateViewHolder(
 		parent: ViewGroup,
 		viewType: Int,
-	): H = onCreateViewHolder(parent, loader, readerSettings, exceptionResolver)
+	): H = onCreateViewHolder(parent, loader, readerSettings, networkState, exceptionResolver)
 
-	suspend fun setItems(items: List<ReaderPage>) = suspendCoroutine<Unit> { cont ->
+	suspend fun setItems(items: List<ReaderPage>) = suspendCoroutine { cont ->
 		differ.submitList(items) {
 			cont.resume(Unit)
 		}
@@ -68,6 +70,7 @@ abstract class BaseReaderAdapter<H : BasePageHolder<*>>(
 		parent: ViewGroup,
 		loader: PageLoader,
 		settings: ReaderSettings,
+		networkState: NetworkState,
 		exceptionResolver: ExceptionResolver,
 	): H
 

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

@@ -9,6 +9,7 @@ import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.cancelAndJoin
+import kotlinx.coroutines.coroutineScope
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.debounce
 import kotlinx.coroutines.flow.launchIn
@@ -16,6 +17,7 @@ import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.plus
 import org.koitharu.kotatsu.core.exceptions.resolve.ExceptionResolver
+import org.koitharu.kotatsu.core.os.NetworkState
 import org.koitharu.kotatsu.parsers.model.MangaPage
 import org.koitharu.kotatsu.reader.domain.PageLoader
 import org.koitharu.kotatsu.reader.ui.config.ReaderSettings
@@ -26,6 +28,7 @@ class PageHolderDelegate(
 	private val loader: PageLoader,
 	private val readerSettings: ReaderSettings,
 	private val callback: Callback,
+	private val networkState: NetworkState,
 	private val exceptionResolver: ExceptionResolver,
 ) : DefaultOnImageEventListener, Observer<ReaderSettings> {
 
@@ -118,29 +121,35 @@ class PageHolderDelegate(
 		}
 	}
 
-	private suspend fun CoroutineScope.doLoad(data: MangaPage, force: Boolean) {
+	private suspend fun doLoad(data: MangaPage, force: Boolean) {
 		state = State.LOADING
 		error = null
 		callback.onLoadingStarted()
 		try {
 			val task = loader.loadPageAsync(data, force)
-			val progressObserver = observeProgress(this, task.progressAsFlow())
-			val file = task.await()
-			progressObserver.cancel()
-			this@PageHolderDelegate.file = file
+			file = coroutineScope {
+				val progressObserver = observeProgress(this, task.progressAsFlow())
+				val file = task.await()
+				progressObserver.cancel()
+				file
+			}
 			state = State.LOADED
-			callback.onImageReady(file.toUri())
+			callback.onImageReady(checkNotNull(file).toUri())
 		} catch (e: CancellationException) {
 			throw e
 		} catch (e: Throwable) {
 			state = State.ERROR
 			error = e
 			callback.onError(e)
+			if (e is IOException && !networkState.value) {
+				networkState.awaitForConnection()
+				retry(data)
+			}
 		}
 	}
 
 	private fun observeProgress(scope: CoroutineScope, progress: Flow<Float>) = progress
-		.debounce(500)
+		.debounce(250)
 		.onEach { callback.onProgressChanged((100 * it).toInt()) }
 		.launchIn(scope)
 

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

@@ -6,6 +6,7 @@ import android.widget.FrameLayout
 import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
 import org.koitharu.kotatsu.core.exceptions.resolve.ExceptionResolver
 import org.koitharu.kotatsu.core.model.ZoomMode
+import org.koitharu.kotatsu.core.os.NetworkState
 import org.koitharu.kotatsu.databinding.ItemPageBinding
 import org.koitharu.kotatsu.reader.domain.PageLoader
 import org.koitharu.kotatsu.reader.ui.config.ReaderSettings
@@ -15,8 +16,9 @@ class ReversedPageHolder(
 	binding: ItemPageBinding,
 	loader: PageLoader,
 	settings: ReaderSettings,
+	networkState: NetworkState,
 	exceptionResolver: ExceptionResolver,
-) : PageHolder(binding, loader, settings, exceptionResolver) {
+) : PageHolder(binding, loader, settings, networkState, exceptionResolver) {
 
 	init {
 		(binding.textViewNumber.layoutParams as FrameLayout.LayoutParams)
@@ -35,6 +37,7 @@ class ReversedPageHolder(
 					minimumScaleType = SubsamplingScaleImageView.SCALE_TYPE_CENTER_INSIDE
 					resetScaleAndCenter()
 				}
+
 				ZoomMode.FIT_HEIGHT -> {
 					minimumScaleType = SubsamplingScaleImageView.SCALE_TYPE_CUSTOM
 					minScale = height / sHeight.toFloat()
@@ -43,6 +46,7 @@ class ReversedPageHolder(
 						PointF(sWidth.toFloat(), sHeight / 2f),
 					)
 				}
+
 				ZoomMode.FIT_WIDTH -> {
 					minimumScaleType = SubsamplingScaleImageView.SCALE_TYPE_CUSTOM
 					minScale = width / sWidth.toFloat()
@@ -51,6 +55,7 @@ class ReversedPageHolder(
 						PointF(sWidth / 2f, 0f),
 					)
 				}
+
 				ZoomMode.KEEP_START -> {
 					minimumScaleType = SubsamplingScaleImageView.SCALE_TYPE_CENTER_INSIDE
 					setScaleAndCenter(

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

@@ -3,6 +3,7 @@ package org.koitharu.kotatsu.reader.ui.pager.reversed
 import android.view.LayoutInflater
 import android.view.ViewGroup
 import org.koitharu.kotatsu.core.exceptions.resolve.ExceptionResolver
+import org.koitharu.kotatsu.core.os.NetworkState
 import org.koitharu.kotatsu.databinding.ItemPageBinding
 import org.koitharu.kotatsu.reader.domain.PageLoader
 import org.koitharu.kotatsu.reader.ui.config.ReaderSettings
@@ -11,18 +12,21 @@ import org.koitharu.kotatsu.reader.ui.pager.BaseReaderAdapter
 class ReversedPagesAdapter(
 	loader: PageLoader,
 	settings: ReaderSettings,
+	networkState: NetworkState,
 	exceptionResolver: ExceptionResolver,
-) : BaseReaderAdapter<ReversedPageHolder>(loader, settings, exceptionResolver) {
+) : BaseReaderAdapter<ReversedPageHolder>(loader, settings, networkState, exceptionResolver) {
 
 	override fun onCreateViewHolder(
 		parent: ViewGroup,
 		loader: PageLoader,
 		settings: ReaderSettings,
+		networkState: NetworkState,
 		exceptionResolver: ExceptionResolver,
 	) = ReversedPageHolder(
 		binding = ItemPageBinding.inflate(LayoutInflater.from(parent.context), parent, false),
 		loader = loader,
 		settings = settings,
+		networkState = networkState,
 		exceptionResolver = exceptionResolver,
 	)
 }

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

@@ -7,8 +7,8 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.core.view.children
 import dagger.hilt.android.AndroidEntryPoint
-import kotlin.math.absoluteValue
 import kotlinx.coroutines.async
+import org.koitharu.kotatsu.core.os.NetworkState
 import org.koitharu.kotatsu.databinding.FragmentReaderStandardBinding
 import org.koitharu.kotatsu.reader.ui.ReaderState
 import org.koitharu.kotatsu.reader.ui.pager.BaseReader
@@ -19,10 +19,15 @@ import org.koitharu.kotatsu.utils.ext.doOnPageChanged
 import org.koitharu.kotatsu.utils.ext.recyclerView
 import org.koitharu.kotatsu.utils.ext.resetTransformations
 import org.koitharu.kotatsu.utils.ext.viewLifecycleScope
+import javax.inject.Inject
+import kotlin.math.absoluteValue
 
 @AndroidEntryPoint
 class ReversedReaderFragment : BaseReader<FragmentReaderStandardBinding>() {
 
+	@Inject
+	lateinit var networkState: NetworkState
+
 	private var pagerAdapter: ReversedPagesAdapter? = null
 
 	override fun onInflateView(
@@ -33,7 +38,12 @@ class ReversedReaderFragment : BaseReader<FragmentReaderStandardBinding>() {
 	@SuppressLint("NotifyDataSetChanged")
 	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
 		super.onViewCreated(view, savedInstanceState)
-		pagerAdapter = ReversedPagesAdapter(viewModel.pageLoader, viewModel.readerSettings, exceptionResolver)
+		pagerAdapter = ReversedPagesAdapter(
+			viewModel.pageLoader,
+			viewModel.readerSettings,
+			networkState,
+			exceptionResolver,
+		)
 		with(binding.pager) {
 			adapter = pagerAdapter
 			offscreenPageLimit = 2
@@ -44,8 +54,8 @@ class ReversedReaderFragment : BaseReader<FragmentReaderStandardBinding>() {
 			val transformer = if (it) ReversedPageAnimTransformer() else null
 			binding.pager.setPageTransformer(transformer)
 			if (transformer == null) {
-				binding.pager.recyclerView?.children?.forEach {
-					it.resetTransformations()
+				binding.pager.recyclerView?.children?.forEach { v ->
+					v.resetTransformations()
 				}
 			}
 		}

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

@@ -10,6 +10,7 @@ import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.exceptions.resolve.ExceptionResolver
 import org.koitharu.kotatsu.core.model.ZoomMode
+import org.koitharu.kotatsu.core.os.NetworkState
 import org.koitharu.kotatsu.databinding.ItemPageBinding
 import org.koitharu.kotatsu.reader.domain.PageLoader
 import org.koitharu.kotatsu.reader.ui.config.ReaderSettings
@@ -21,8 +22,9 @@ open class PageHolder(
 	binding: ItemPageBinding,
 	loader: PageLoader,
 	settings: ReaderSettings,
+	networkState: NetworkState,
 	exceptionResolver: ExceptionResolver,
-) : BasePageHolder<ItemPageBinding>(binding, loader, settings, exceptionResolver),
+) : BasePageHolder<ItemPageBinding>(binding, loader, settings, networkState, exceptionResolver),
 	View.OnClickListener {
 
 	init {
@@ -74,6 +76,7 @@ open class PageHolder(
 				binding.ssiv.minimumScaleType = SubsamplingScaleImageView.SCALE_TYPE_CENTER_INSIDE
 				binding.ssiv.resetScaleAndCenter()
 			}
+
 			ZoomMode.FIT_HEIGHT -> {
 				binding.ssiv.minimumScaleType = SubsamplingScaleImageView.SCALE_TYPE_CUSTOM
 				binding.ssiv.minScale = binding.ssiv.height / binding.ssiv.sHeight.toFloat()
@@ -82,6 +85,7 @@ open class PageHolder(
 					PointF(0f, binding.ssiv.sHeight / 2f),
 				)
 			}
+
 			ZoomMode.FIT_WIDTH -> {
 				binding.ssiv.minimumScaleType = SubsamplingScaleImageView.SCALE_TYPE_CUSTOM
 				binding.ssiv.minScale = binding.ssiv.width / binding.ssiv.sWidth.toFloat()
@@ -90,6 +94,7 @@ open class PageHolder(
 					PointF(binding.ssiv.sWidth / 2f, 0f),
 				)
 			}
+
 			ZoomMode.KEEP_START -> {
 				binding.ssiv.minimumScaleType = SubsamplingScaleImageView.SCALE_TYPE_CENTER_INSIDE
 				binding.ssiv.setScaleAndCenter(

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

@@ -7,8 +7,8 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.core.view.children
 import dagger.hilt.android.AndroidEntryPoint
-import kotlin.math.absoluteValue
 import kotlinx.coroutines.async
+import org.koitharu.kotatsu.core.os.NetworkState
 import org.koitharu.kotatsu.databinding.FragmentReaderStandardBinding
 import org.koitharu.kotatsu.reader.ui.ReaderState
 import org.koitharu.kotatsu.reader.ui.pager.BaseReader
@@ -18,10 +18,15 @@ import org.koitharu.kotatsu.utils.ext.doOnPageChanged
 import org.koitharu.kotatsu.utils.ext.recyclerView
 import org.koitharu.kotatsu.utils.ext.resetTransformations
 import org.koitharu.kotatsu.utils.ext.viewLifecycleScope
+import javax.inject.Inject
+import kotlin.math.absoluteValue
 
 @AndroidEntryPoint
 class PagerReaderFragment : BaseReader<FragmentReaderStandardBinding>() {
 
+	@Inject
+	lateinit var networkState: NetworkState
+
 	private var pagesAdapter: PagesAdapter? = null
 
 	override fun onInflateView(
@@ -32,7 +37,12 @@ class PagerReaderFragment : BaseReader<FragmentReaderStandardBinding>() {
 	@SuppressLint("NotifyDataSetChanged")
 	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
 		super.onViewCreated(view, savedInstanceState)
-		pagesAdapter = PagesAdapter(viewModel.pageLoader, viewModel.readerSettings, exceptionResolver)
+		pagesAdapter = PagesAdapter(
+			viewModel.pageLoader,
+			viewModel.readerSettings,
+			networkState,
+			exceptionResolver,
+		)
 		with(binding.pager) {
 			adapter = pagesAdapter
 			offscreenPageLimit = 2

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

@@ -3,6 +3,7 @@ package org.koitharu.kotatsu.reader.ui.pager.standard
 import android.view.LayoutInflater
 import android.view.ViewGroup
 import org.koitharu.kotatsu.core.exceptions.resolve.ExceptionResolver
+import org.koitharu.kotatsu.core.os.NetworkState
 import org.koitharu.kotatsu.databinding.ItemPageBinding
 import org.koitharu.kotatsu.reader.domain.PageLoader
 import org.koitharu.kotatsu.reader.ui.config.ReaderSettings
@@ -11,18 +12,21 @@ import org.koitharu.kotatsu.reader.ui.pager.BaseReaderAdapter
 class PagesAdapter(
 	loader: PageLoader,
 	settings: ReaderSettings,
+	networkState: NetworkState,
 	exceptionResolver: ExceptionResolver,
-) : BaseReaderAdapter<PageHolder>(loader, settings, exceptionResolver) {
+) : BaseReaderAdapter<PageHolder>(loader, settings, networkState, exceptionResolver) {
 
 	override fun onCreateViewHolder(
 		parent: ViewGroup,
 		loader: PageLoader,
 		settings: ReaderSettings,
+		networkState: NetworkState,
 		exceptionResolver: ExceptionResolver,
 	) = PageHolder(
 		binding = ItemPageBinding.inflate(LayoutInflater.from(parent.context), parent, false),
 		loader = loader,
 		settings = settings,
+		networkState = networkState,
 		exceptionResolver = exceptionResolver,
 	)
 }

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

@@ -3,7 +3,7 @@ package org.koitharu.kotatsu.reader.ui.pager.webtoon
 import android.view.LayoutInflater
 import android.view.ViewGroup
 import org.koitharu.kotatsu.core.exceptions.resolve.ExceptionResolver
-import org.koitharu.kotatsu.core.prefs.AppSettings
+import org.koitharu.kotatsu.core.os.NetworkState
 import org.koitharu.kotatsu.databinding.ItemPageWebtoonBinding
 import org.koitharu.kotatsu.reader.domain.PageLoader
 import org.koitharu.kotatsu.reader.ui.config.ReaderSettings
@@ -12,13 +12,15 @@ import org.koitharu.kotatsu.reader.ui.pager.BaseReaderAdapter
 class WebtoonAdapter(
 	loader: PageLoader,
 	settings: ReaderSettings,
+	networkState: NetworkState,
 	exceptionResolver: ExceptionResolver,
-) : BaseReaderAdapter<WebtoonHolder>(loader, settings, exceptionResolver) {
+) : BaseReaderAdapter<WebtoonHolder>(loader, settings, networkState, exceptionResolver) {
 
 	override fun onCreateViewHolder(
 		parent: ViewGroup,
 		loader: PageLoader,
 		settings: ReaderSettings,
+		networkState: NetworkState,
 		exceptionResolver: ExceptionResolver,
 	) = WebtoonHolder(
 		binding = ItemPageWebtoonBinding.inflate(
@@ -28,6 +30,7 @@ class WebtoonAdapter(
 		),
 		loader = loader,
 		settings = settings,
+		networkState = networkState,
 		exceptionResolver = exceptionResolver,
 	)
 }

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

@@ -8,20 +8,26 @@ import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
 import com.davemorrissey.labs.subscaleview.decoder.SkiaPooledImageRegionDecoder
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.exceptions.resolve.ExceptionResolver
+import org.koitharu.kotatsu.core.os.NetworkState
 import org.koitharu.kotatsu.databinding.ItemPageWebtoonBinding
 import org.koitharu.kotatsu.reader.domain.PageLoader
 import org.koitharu.kotatsu.reader.ui.config.ReaderSettings
 import org.koitharu.kotatsu.reader.ui.pager.BasePageHolder
 import org.koitharu.kotatsu.reader.ui.pager.ReaderPage
 import org.koitharu.kotatsu.utils.GoneOnInvisibleListener
-import org.koitharu.kotatsu.utils.ext.*
+import org.koitharu.kotatsu.utils.ext.getDisplayMessage
+import org.koitharu.kotatsu.utils.ext.hideCompat
+import org.koitharu.kotatsu.utils.ext.ifZero
+import org.koitharu.kotatsu.utils.ext.setProgressCompat
+import org.koitharu.kotatsu.utils.ext.showCompat
 
 class WebtoonHolder(
 	binding: ItemPageWebtoonBinding,
 	loader: PageLoader,
 	settings: ReaderSettings,
+	networkState: NetworkState,
 	exceptionResolver: ExceptionResolver,
-) : BasePageHolder<ItemPageWebtoonBinding>(binding, loader, settings, exceptionResolver),
+) : BasePageHolder<ItemPageWebtoonBinding>(binding, loader, settings, networkState, exceptionResolver),
 	View.OnClickListener {
 
 	private var scrollToRestore = 0

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

@@ -7,6 +7,7 @@ import android.view.ViewGroup
 import android.view.animation.AccelerateDecelerateInterpolator
 import dagger.hilt.android.AndroidEntryPoint
 import kotlinx.coroutines.async
+import org.koitharu.kotatsu.core.os.NetworkState
 import org.koitharu.kotatsu.databinding.FragmentReaderWebtoonBinding
 import org.koitharu.kotatsu.reader.ui.ReaderState
 import org.koitharu.kotatsu.reader.ui.pager.BaseReader
@@ -15,10 +16,14 @@ import org.koitharu.kotatsu.reader.ui.pager.ReaderPage
 import org.koitharu.kotatsu.utils.ext.findCenterViewPosition
 import org.koitharu.kotatsu.utils.ext.firstVisibleItemPosition
 import org.koitharu.kotatsu.utils.ext.viewLifecycleScope
+import javax.inject.Inject
 
 @AndroidEntryPoint
 class WebtoonReaderFragment : BaseReader<FragmentReaderWebtoonBinding>() {
 
+	@Inject
+	lateinit var networkState: NetworkState
+
 	private val scrollInterpolator = AccelerateDecelerateInterpolator()
 	private var webtoonAdapter: WebtoonAdapter? = null
 
@@ -29,7 +34,12 @@ class WebtoonReaderFragment : BaseReader<FragmentReaderWebtoonBinding>() {
 
 	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
 		super.onViewCreated(view, savedInstanceState)
-		webtoonAdapter = WebtoonAdapter(viewModel.pageLoader, viewModel.readerSettings, exceptionResolver)
+		webtoonAdapter = WebtoonAdapter(
+			viewModel.pageLoader,
+			viewModel.readerSettings,
+			networkState,
+			exceptionResolver,
+		)
 		with(binding.recyclerView) {
 			setHasFixedSize(true)
 			adapter = webtoonAdapter

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

@@ -12,7 +12,7 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.base.ui.BaseViewModel
 import org.koitharu.kotatsu.base.ui.util.ReversibleAction
 import org.koitharu.kotatsu.core.model.FavouriteCategory
-import org.koitharu.kotatsu.core.os.NetworkStateObserver
+import org.koitharu.kotatsu.core.os.NetworkState
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.prefs.ListMode
 import org.koitharu.kotatsu.core.prefs.observeAsFlow
@@ -46,14 +46,14 @@ class ShelfViewModel @Inject constructor(
 	private val favouritesRepository: FavouritesRepository,
 	private val trackingRepository: TrackingRepository,
 	private val settings: AppSettings,
-	networkStateObserver: NetworkStateObserver,
+	networkState: NetworkState,
 ) : BaseViewModel(), ListExtraProvider {
 
 	val onActionDone = SingleLiveEvent<ReversibleAction>()
 
 	val content: LiveData<List<ListModel>> = combine(
 		settings.observeAsFlow(AppSettings.KEY_SHELF_SECTIONS) { shelfSections },
-		networkStateObserver,
+		networkState,
 		repository.observeShelfContent(),
 	) { sections, isConnected, content ->
 		mapList(content, sections, isConnected)

app/src/main/java/org/koitharu/kotatsu/sync/domain/SyncController.kt

@@ -5,16 +5,17 @@ import android.accounts.AccountManager
 import android.content.ContentResolver
 import android.content.Context
 import android.os.Bundle
-import android.util.ArrayMap
+import androidx.collection.ArrayMap
 import androidx.room.InvalidationTracker
 import androidx.room.withTransaction
 import dagger.hilt.android.qualifiers.ApplicationContext
-import java.util.concurrent.TimeUnit
-import javax.inject.Inject
-import javax.inject.Singleton
-import kotlinx.coroutines.*
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
+import kotlinx.coroutines.withContext
 import org.koitharu.kotatsu.BuildConfig
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.db.MangaDatabase
@@ -22,6 +23,9 @@ import org.koitharu.kotatsu.core.db.TABLE_FAVOURITES
 import org.koitharu.kotatsu.core.db.TABLE_FAVOURITE_CATEGORIES
 import org.koitharu.kotatsu.core.db.TABLE_HISTORY
 import org.koitharu.kotatsu.utils.ext.processLifecycleScope
+import java.util.concurrent.TimeUnit
+import javax.inject.Inject
+import javax.inject.Singleton
 
 @Singleton
 class SyncController @Inject constructor(

app/src/main/java/org/koitharu/kotatsu/utils/CompositeMutex.kt

@@ -1,14 +1,14 @@
 package org.koitharu.kotatsu.utils
 
-import android.util.ArrayMap
-import java.util.*
-import kotlin.coroutines.coroutineContext
-import kotlin.coroutines.resume
+import androidx.collection.ArrayMap
 import kotlinx.coroutines.CancellableContinuation
 import kotlinx.coroutines.isActive
 import kotlinx.coroutines.suspendCancellableCoroutine
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
+import java.util.LinkedList
+import kotlin.coroutines.coroutineContext
+import kotlin.coroutines.resume
 
 class CompositeMutex<T : Any> : Set<T> {
 
@@ -27,7 +27,7 @@ class CompositeMutex<T : Any> : Set<T> {
 	}
 
 	override fun isEmpty(): Boolean {
-		return data.isEmpty()
+		return data.isEmpty
 	}
 
 	override fun iterator(): Iterator<T> {
@@ -59,7 +59,7 @@ class CompositeMutex<T : Any> : Set<T> {
 
 	private suspend fun waitForRemoval(element: T) {
 		val list = data[element] ?: return
-		suspendCancellableCoroutine<Unit> { continuation ->
+		suspendCancellableCoroutine { continuation ->
 			list.add(continuation)
 			continuation.invokeOnCancellation {
 				list.remove(continuation)

app/src/main/java/org/koitharu/kotatsu/utils/MediatorStateFlow.kt

@@ -0,0 +1,39 @@
+package org.koitharu.kotatsu.utils
+
+import kotlinx.coroutines.flow.FlowCollector
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import java.util.concurrent.atomic.AtomicInteger
+
+abstract class MediatorStateFlow<T>(initialValue: T) : StateFlow<T> {
+
+	private val delegate = MutableStateFlow(initialValue)
+	private val collectors = AtomicInteger(0)
+
+	final override val replayCache: List<T>
+		get() = delegate.replayCache
+
+	final override val value: T
+		get() = delegate.value
+
+	final override suspend fun collect(collector: FlowCollector<T>): Nothing {
+		try {
+			if (collectors.getAndIncrement() == 0) {
+				onActive()
+			}
+			delegate.collect(collector)
+		} finally {
+			if (collectors.decrementAndGet() == 0) {
+				onInactive()
+			}
+		}
+	}
+
+	protected fun publishValue(v: T) {
+		delegate.value = v
+	}
+
+	abstract fun onActive()
+
+	abstract fun onInactive()
+}

app/src/main/java/org/koitharu/kotatsu/utils/ext/IO.kt

@@ -0,0 +1,34 @@
+package org.koitharu.kotatsu.utils.ext
+
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.currentCoroutineContext
+import kotlinx.coroutines.ensureActive
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.withContext
+import okhttp3.ResponseBody
+import org.koitharu.kotatsu.utils.progress.ProgressResponseBody
+import java.io.InputStream
+import java.io.OutputStream
+
+suspend fun InputStream.copyToSuspending(
+	out: OutputStream,
+	bufferSize: Int = DEFAULT_BUFFER_SIZE
+): Long = withContext(Dispatchers.IO) {
+	val job = currentCoroutineContext()[Job]
+	var bytesCopied: Long = 0
+	val buffer = ByteArray(bufferSize)
+	var bytes = read(buffer)
+	while (bytes >= 0) {
+		out.write(buffer, 0, bytes)
+		bytesCopied += bytes
+		job?.ensureActive()
+		bytes = read(buffer)
+		job?.ensureActive()
+	}
+	bytesCopied
+}
+
+fun ResponseBody.withProgress(progressState: MutableStateFlow<Float>): ResponseBody {
+	return ProgressResponseBody(this, progressState)
+}

app/src/main/java/org/koitharu/kotatsu/utils/progress/ProgressResponseBody.kt

@@ -0,0 +1,51 @@
+package org.koitharu.kotatsu.utils.progress
+
+import kotlinx.coroutines.flow.MutableStateFlow
+import okhttp3.MediaType
+import okhttp3.ResponseBody
+import okio.Buffer
+import okio.BufferedSource
+import okio.ForwardingSource
+import okio.Source
+import okio.buffer
+
+class ProgressResponseBody(
+	private val delegate: ResponseBody,
+	private val progressState: MutableStateFlow<Float>,
+) : ResponseBody() {
+
+	private var bufferedSource: BufferedSource? = null
+
+	override fun close() {
+		super.close()
+		delegate.close()
+	}
+
+	override fun contentLength(): Long = delegate.contentLength()
+
+	override fun contentType(): MediaType? = delegate.contentType()
+
+	override fun source(): BufferedSource {
+		return bufferedSource ?: ProgressSource(delegate.source(), contentLength(), progressState).buffer().also {
+			bufferedSource = it
+		}
+	}
+
+	private class ProgressSource(
+		delegate: Source,
+		private val contentLength: Long,
+		private val progressState: MutableStateFlow<Float>,
+	) : ForwardingSource(delegate) {
+
+		private var totalBytesRead = 0L
+
+		override fun read(sink: Buffer, byteCount: Long): Long {
+			val bytesRead = super.read(sink, byteCount)
+			if (contentLength > 0) {
+				totalBytesRead += if (bytesRead != -1L) bytesRead else 0
+				progressState.value = (totalBytesRead.toDouble() / contentLength.toDouble()).toFloat()
+			}
+			return bytesRead
+		}
+	}
+}

app/src/main/res/values-el/plurals.xml

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <plurals name="days_ago">
+        <item quantity="one">%1$d μέρα πριν</item>
+        <item quantity="other">%1$d μέρες πριν</item>
+    </plurals>
+    <plurals name="items">
+        <item quantity="one">%1$dστοιχείο</item>
+        <item quantity="other">%1$dστοιχεία</item>
+    </plurals>
+    <plurals name="new_chapters">
+        <item quantity="one">%1$dνέο κεφάλαιο</item>
+        <item quantity="other">%1$dνέα κεφάλαια</item>
+    </plurals>
+    <plurals name="chapters_from_x">
+        <item quantity="one">%1$dκεφάλαιο%2$d</item>
+        <item quantity="other">%1$dκεφάλαια%2$d</item>
+    </plurals>
+    <plurals name="hours_ago">
+        <item quantity="one">%1$dώρα πριν</item>
+        <item quantity="other">%1$dώρες πριν</item>
+    </plurals>
+    <plurals name="chapters">
+        <item quantity="one">%1$dκεφάλαιο</item>
+        <item quantity="other">%1$dκεφάλαια</item>
+    </plurals>
+    <plurals name="pages">
+        <item quantity="one">Σύνολο%1$dσελίδα</item>
+        <item quantity="other">Σύνολο%1$dσελίδες</item>
+    </plurals>
+    <plurals name="minutes_ago">
+        <item quantity="one">%1$dλεπτό πριν</item>
+        <item quantity="other">%1$d λεπτά πριν</item>
+    </plurals>
+</resources>

app/src/main/res/values-el/strings.xml

@@ -0,0 +1,81 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="local_storage">Εσωτερικός χώρος</string>
+    <string name="close_menu">Κλείσιμο μενού</string>
+    <string name="open_menu">Άνοιγμα μενού</string>
+    <string name="favourites">Αγαπημένα</string>
+    <string name="history">Ιστορικό</string>
+    <string name="error_occurred">Προέκυψε σφάλμα</string>
+    <string name="try_again">Επανάληψη</string>
+    <string name="grid">Πλέγμα</string>
+    <string name="list_mode">Εμφάνιση ως λίστα</string>
+    <string name="settings">Ρυθμίσεις</string>
+    <string name="remote_sources">Απομακρυσμένες πηγές</string>
+    <string name="computing_">Επεξεργασία…</string>
+    <string name="close">Κλείσιμο</string>
+    <string name="clear_history">Εκκαθάριση ιστορικού</string>
+    <string name="nothing_found">Δεν βρέθηκε τίποτα</string>
+    <string name="history_is_empty">Κενό ιστορικό</string>
+    <string name="read">Διάβασε</string>
+    <string name="add_to_favourites">Προσθήκη στα αγαπημένα</string>
+    <string name="add_new_category">Νέα κατηγορία</string>
+    <string name="save">Αποθήκευση</string>
+    <string name="share">Κοινοποιήση</string>
+    <string name="create_shortcut">Δημιουργία συντόμευσης…</string>
+    <string name="share_s">Κοινοποίηση %s</string>
+    <string name="search">Αναζήτηση</string>
+    <string name="search_manga">Αναζήτηση μάνγκα</string>
+    <string name="manga_downloading_">Λήψη…</string>
+    <string name="download_complete">Κατεβασμένο</string>
+    <string name="downloads">Λήψεις</string>
+    <string name="updated">Ενημερωμένο</string>
+    <string name="newest">Νεότερο</string>
+    <string name="by_rating">Βαθμολογία</string>
+    <string name="filter">Φίλτρο</string>
+    <string name="dark">Σκοτεινό</string>
+    <string name="automatic">Όπως στο σύστημα</string>
+    <string name="clear">Εκκαθάριση</string>
+    <string name="text_clear_history_prompt">Να διαγράψετε μόνιμα όλο το ιστορικό ανάγνωσης;</string>
+    <string name="remove">Διαγραφή</string>
+    <string name="save_page">Αποθήκευση σελίδας</string>
+    <string name="page_saved">Αποθηκευμένα</string>
+    <string name="share_image">Κοινή χρήση εικόνας</string>
+    <string name="_import">Εισαγωγή</string>
+    <string name="delete">Διαγραφή</string>
+    <string name="text_file_not_supported">Επιλέξτε ένα αρχείο ZIP ή CBZ.</string>
+    <string name="no_description">Χωρίς περιγραφή</string>
+    <string name="history_and_cache">Ιστορικό και μνήμη cache</string>
+    <string name="clear_pages_cache">Εκκαθάριση μνήμης cache της σελίδας</string>
+    <string name="cache">Προσωρινή Μνήμη</string>
+    <string name="text_file_sizes">B|kB|MB|GB|TB</string>
+    <string name="standard">Τυπικό</string>
+    <string name="webtoon">Μάνχγουα</string>
+    <string name="search_on_s">Αναζήτηση στο %s</string>
+    <string name="delete_manga">Διαγραφή μάνγκα</string>
+    <string name="text_delete_local_manga">Μόνιμη διαγραφή του \"%s\" από τη συσκευή;</string>
+    <string name="reader_settings">Ρυθμίσεις λειτουργίας ανάγνωσης</string>
+    <string name="switch_pages">Αλλαγή σελίδων</string>
+    <string name="network_error">Αδυναμία σύνδεσης στο ίντερνετ</string>
+    <string name="chapters">Κεφάλαια</string>
+    <string name="details">Πληροφορίες</string>
+    <string name="list">Λίστα</string>
+    <string name="detailed_list">Λεπτομερής λίστα</string>
+    <string name="loading_">Φόρτωση…</string>
+    <string name="chapter_d_of_d">Κεφάλαιο%1$d από %2$d</string>
+    <string name="you_have_not_favourites_yet">Δεν υπάρχουν αγαπημένα</string>
+    <string name="add">Προσθήκη</string>
+    <string name="enter_category_name">Εισαγωγή ονόματος κατηγορίας</string>
+    <string name="processing_">Επεξεργασία…</string>
+    <string name="by_name">Όνομα</string>
+    <string name="popular">Δημοφιλή</string>
+    <string name="sort_order">Τρόπος Ταξινόμησης</string>
+    <string name="_s_removed_from_history">Το \"%s\" αφαιρέθηκε από το ιστορικό</string>
+    <string name="theme">Θέμα</string>
+    <string name="light">Φωτεινό</string>
+    <string name="pages">Σελίδες</string>
+    <string name="wait_for_loading_finish">Περιμένετε να ολοκληρωθεί η φόρτωση…</string>
+    <string name="_s_deleted_from_local_storage">Το \"%s\" διαγράφηκε από τον τοπικό χώρο αποθήκευσης</string>
+    <string name="operation_not_supported">Αυτή η λειτουργία δεν υποστηρίζεται</string>
+    <string name="read_mode">Λειτουργία ανάγνωσης</string>
+    <string name="grid_size">Μέγεθος πλέγματος</string>
+</resources>

app/src/main/res/values-sr/plurals.xml

@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <plurals name="pages">
+        <item quantity="one">Тотално %1$d странa</item>
+        <item quantity="few">Тотално %1$d странице</item>
+        <item quantity="other">Тотално %1$d странице</item>
+    </plurals>
+    <plurals name="items">
+        <item quantity="one">%1$d ставке</item>
+        <item quantity="few">%1$d ставки</item>
+        <item quantity="other">%1$d ставка</item>
+    </plurals>
+    <plurals name="chapters_from_x">
+        <item quantity="one">%1$d поглавља од %2$d</item>
+        <item quantity="few">%1$d поглавља од %2$d</item>
+        <item quantity="other">%1$d поглавља од %2$d</item>
+    </plurals>
+    <plurals name="minutes_ago">
+        <item quantity="one">пре %1$d минута</item>
+        <item quantity="few">пре %1$d минута</item>
+        <item quantity="other">пре %1$d минута</item>
+    </plurals>
+    <plurals name="hours_ago">
+        <item quantity="one">пре %1$d сата</item>
+        <item quantity="few">пре %1$d сата</item>
+        <item quantity="other">пре %1$d сата</item>
+    </plurals>
+    <plurals name="days_ago">
+        <item quantity="one">пре %1$d дана</item>
+        <item quantity="few">пре %1$d дана</item>
+        <item quantity="other">пре %1$d дана</item>
+    </plurals>
+    <plurals name="new_chapters">
+        <item quantity="one">%1$d нова поглавља</item>
+        <item quantity="few">%1$d нових поглавља</item>
+        <item quantity="other">%1$d нових поглавља</item>
+    </plurals>
+    <plurals name="chapters">
+        <item quantity="one">%1$d поглављe</item>
+        <item quantity="few">%1$d поглавља</item>
+        <item quantity="other">%1$d поглавља</item>
+    </plurals>
+</resources>

app/src/main/res/values-sr/strings.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="local_storage">Локално складиште</string>
+    <string name="close_menu">Затвори мени</string>
+    <string name="error_occurred">Грешка се појавила</string>
+    <string name="open_menu">Отвори мени</string>
+    <string name="favourites">Фаворити</string>
+    <string name="history">Историја</string>
+    <string name="network_error">Неуспешно повезивање са интернетом</string>
+    <string name="details">Детаљи</string>
+    <string name="chapters">Поглавља</string>
+    <string name="list">Листа</string>
+    <string name="detailed_list">Детаљна листа</string>
+    <string name="grid">Табла</string>
+</resources>

app/src/main/res/values-vi/plurals.xml

@@ -15,4 +15,10 @@
     <plurals name="days_ago">
         <item quantity="other">%1$d ngày trước</item>
     </plurals>
+    <plurals name="chapters_from_x">
+        <item quantity="other">%1$d chương từ %2$d</item>
+    </plurals>
+    <plurals name="pages">
+        <item quantity="other">Tổng %1$d trang</item>
+    </plurals>
 </resources>