Fix downloading

Currently translated at 100.0% (508 of 508 strings)

Translated using Weblate (Russian)

Currently translated at 100.0% (507 of 507 strings)

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

app/build.gradle

@@ -16,8 +16,8 @@ android {
 		applicationId 'org.koitharu.kotatsu'
 		minSdk = 21
 		targetSdk = 34
-		versionCode = 591
-		versionName = '6.2.4'
+		versionCode = 593
+		versionName = '6.2.5'
 		generatedDensities = []
 		testInstrumentationRunner "org.koitharu.kotatsu.HiltTestRunner"
 		ksp {
@@ -82,7 +82,7 @@ afterEvaluate {
 }
 dependencies {
 	//noinspection GradleDependency
-	implementation('com.github.KotatsuApp:kotatsu-parsers:af1aca8725') {
+	implementation('com.github.KotatsuApp:kotatsu-parsers:4ca3a492b0') {
 		exclude group: 'org.json', module: 'json'
 	}
 

app/proguard-rules.pro

@@ -18,3 +18,4 @@
 -keep class org.koitharu.kotatsu.core.exceptions.* { *; }
 -keep class org.koitharu.kotatsu.settings.NotificationSettingsLegacyFragment
 -keep class org.koitharu.kotatsu.core.prefs.ScreenshotsPolicy { *; }
+-keep class org.koitharu.kotatsu.settings.backup.PeriodicalBackupSettingsFragment { *; }

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

@@ -29,7 +29,7 @@ class BackupZipOutput(val file: File) : Closeable {
 	}
 }
 
-private const val DIR_BACKUPS = "backups"
+const val DIR_BACKUPS = "backups"
 
 suspend fun BackupZipOutput(context: Context): BackupZipOutput = runInterruptible(Dispatchers.IO) {
 	val dir = context.run {

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

@@ -354,6 +354,16 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 	val is32BitColorsEnabled: Boolean
 		get() = prefs.getBoolean(KEY_32BIT_COLOR, false)
 
+	val isPeriodicalBackupEnabled: Boolean
+		get() = prefs.getBoolean(KEY_BACKUP_PERIODICAL_ENABLED, false)
+
+	val periodicalBackupFrequency: Long
+		get() = prefs.getString(KEY_BACKUP_PERIODICAL_FREQUENCY, null)?.toLongOrNull() ?: 7L
+
+	var periodicalBackupOutput: Uri?
+		get() = prefs.getString(KEY_BACKUP_PERIODICAL_OUTPUT, null)?.toUriOrNull()
+		set(value) = prefs.edit { putString(KEY_BACKUP_PERIODICAL_OUTPUT, value?.toString()) }
+
 	fun isTipEnabled(tip: String): Boolean {
 		return prefs.getStringSet(KEY_TIPS_CLOSED, emptySet())?.contains(tip) != true
 	}
@@ -458,6 +468,10 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 		const val KEY_ZOOM_MODE = "zoom_mode"
 		const val KEY_BACKUP = "backup"
 		const val KEY_RESTORE = "restore"
+		const val KEY_BACKUP_PERIODICAL_ENABLED = "backup_periodic"
+		const val KEY_BACKUP_PERIODICAL_FREQUENCY = "backup_periodic_freq"
+		const val KEY_BACKUP_PERIODICAL_OUTPUT = "backup_periodic_output"
+		const val KEY_BACKUP_PERIODICAL_LAST = "backup_periodic_last"
 		const val KEY_HISTORY_GROUPING = "history_grouping"
 		const val KEY_READING_INDICATORS = "reading_indicators"
 		const val KEY_REVERSE_CHAPTERS = "reverse_chapters"

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/BaseActivity.kt

@@ -6,7 +6,6 @@ import android.graphics.Color
 import android.os.Build
 import android.os.Bundle
 import android.view.KeyEvent
-import android.view.MenuItem
 import android.view.View
 import android.view.ViewGroup
 import androidx.annotation.CallSuper
@@ -96,11 +95,10 @@ abstract class BaseActivity<B : ViewBinding> :
 		insetsDelegate.onViewCreated(binding.root)
 	}
 
-	override fun onOptionsItemSelected(item: MenuItem) = if (item.itemId == android.R.id.home) {
-		onBackPressedDispatcher.onBackPressed()
-		// TODO: navigateUpTo
-		true
-	} else super.onOptionsItemSelected(item)
+	override fun onSupportNavigateUp(): Boolean {
+		dispatchNavigateUp()
+		return true
+	}
 
 	override fun onKeyDown(keyCode: Int, event: KeyEvent?): Boolean {
 		if (BuildConfig.DEBUG && keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
@@ -151,6 +149,17 @@ abstract class BaseActivity<B : ViewBinding> :
 		window.statusBarColor = defaultStatusBarColor
 	}
 
+	protected open fun dispatchNavigateUp() {
+		val upIntent = parentActivityIntent
+		if (upIntent != null) {
+			if (!navigateUpTo(upIntent)) {
+				startActivity(upIntent)
+			}
+		} else {
+			finishAfterTransition()
+		}
+	}
+
 	private fun putDataToExtras(intent: Intent?) {
 		intent?.putExtra(EXTRA_DATA, intent.data)
 	}

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/list/RecyclerScrollKeeper.kt

@@ -0,0 +1,40 @@
+package org.koitharu.kotatsu.core.ui.list
+
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import androidx.recyclerview.widget.RecyclerView.AdapterDataObserver
+
+class RecyclerScrollKeeper(
+	private val rv: RecyclerView,
+) : AdapterDataObserver() {
+
+	private val scrollUpRunnable = Runnable {
+		(rv.layoutManager as? LinearLayoutManager)?.scrollToPositionWithOffset(0, 0)
+	}
+
+	fun attach() {
+		rv.adapter?.registerAdapterDataObserver(this)
+	}
+
+	override fun onItemRangeInserted(positionStart: Int, itemCount: Int) {
+		super.onItemRangeInserted(positionStart, itemCount)
+		if (positionStart == 0 && isScrolledToTop()) {
+			postScrollUp()
+		}
+	}
+
+	override fun onItemRangeMoved(fromPosition: Int, toPosition: Int, itemCount: Int) {
+		super.onItemRangeMoved(fromPosition, toPosition, itemCount)
+		if (toPosition == 0 && isScrolledToTop()) {
+			postScrollUp()
+		}
+	}
+
+	private fun postScrollUp() {
+		rv.postDelayed(scrollUpRunnable, 500L)
+	}
+
+	private fun isScrolledToTop(): Boolean {
+		return (rv.layoutManager as? LinearLayoutManager)?.findFirstVisibleItemPosition() == 0
+	}
+}

app/src/main/kotlin/org/koitharu/kotatsu/core/util/ext/Android.kt

@@ -83,7 +83,7 @@ fun <I> ActivityResultLauncher<I>.tryLaunch(
 	e.printStackTraceDebug()
 }.isSuccess
 
-fun SharedPreferences.observe() = callbackFlow<String?> {
+fun SharedPreferences.observe(): Flow<String?> = callbackFlow {
 	val listener = SharedPreferences.OnSharedPreferenceChangeListener { _, key ->
 		trySendBlocking(key)
 	}

app/src/main/kotlin/org/koitharu/kotatsu/core/util/ext/Coil.kt

@@ -23,7 +23,7 @@ fun ImageView.newImageRequest(lifecycleOwner: LifecycleOwner, data: Any?): Image
 			return null
 		}
 	}
-	disposeImageRequest()
+	// disposeImageRequest()
 	return ImageRequest.Builder(context)
 		.data(data)
 		.lifecycle(lifecycleOwner)

app/src/main/kotlin/org/koitharu/kotatsu/details/domain/DetailsInteractor.kt

@@ -87,5 +87,5 @@ class DetailsInteractor @Inject constructor(
 		}
 	}
 
-	suspend fun findLocal(seed: Manga) = localMangaRepository.getRemoteManga(seed)
+	suspend fun findRemote(seed: Manga) = localMangaRepository.getRemoteManga(seed)
 }

app/src/main/kotlin/org/koitharu/kotatsu/details/domain/ProgressUpdateUseCase.kt

@@ -3,6 +3,7 @@ package org.koitharu.kotatsu.details.domain
 import org.koitharu.kotatsu.core.db.MangaDatabase
 import org.koitharu.kotatsu.core.model.findChapter
 import org.koitharu.kotatsu.core.model.isLocal
+import org.koitharu.kotatsu.core.os.NetworkState
 import org.koitharu.kotatsu.core.parser.MangaRepository
 import org.koitharu.kotatsu.history.data.PROGRESS_NONE
 import org.koitharu.kotatsu.local.data.LocalMangaRepository
@@ -13,6 +14,7 @@ class ProgressUpdateUseCase @Inject constructor(
 	private val mangaRepositoryFactory: MangaRepository.Factory,
 	private val database: MangaDatabase,
 	private val localMangaRepository: LocalMangaRepository,
+	private val networkState: NetworkState,
 ) {
 
 	suspend operator fun invoke(manga: Manga): Float {
@@ -22,6 +24,9 @@ class ProgressUpdateUseCase @Inject constructor(
 		} else {
 			manga
 		}
+		if (!seed.isLocal && !networkState.value) {
+			return PROGRESS_NONE
+		}
 		val repo = mangaRepositoryFactory.create(seed.source)
 		val details = if (manga.source != seed.source || seed.chapters.isNullOrEmpty()) {
 			repo.getDetails(seed)

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

@@ -149,15 +149,13 @@ class DetailsViewModel @Inject constructor(
 	val scrobblingInfo: StateFlow<List<ScrobblingInfo>> = interactor.observeScrobblingInfo(mangaId)
 		.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, emptyList())
 
-	val relatedManga: StateFlow<List<MangaItemModel>> = manga
-		.mapLatest {
-			if (it != null && settings.isRelatedMangaEnabled) {
-				relatedMangaUseCase.invoke(it)?.toUi(ListMode.GRID, extraProvider).orEmpty()
-			} else {
-				emptyList()
-			}
+	val relatedManga: StateFlow<List<MangaItemModel>> = manga.mapLatest {
+		if (it != null && settings.isRelatedMangaEnabled) {
+			relatedMangaUseCase.invoke(it)?.toUi(ListMode.GRID, extraProvider).orEmpty()
+		} else {
+			emptyList()
 		}
-		.stateIn(viewModelScope, SharingStarted.Lazily, emptyList())
+	}.stateIn(viewModelScope, SharingStarted.Lazily, emptyList())
 
 	val branches: StateFlow<List<MangaBranch>> = combine(
 		details,
@@ -217,7 +215,7 @@ class DetailsViewModel @Inject constructor(
 		}
 		launchJob(Dispatchers.Default) {
 			val manga = details.firstOrNull { it != null && it.isLocal } ?: return@launchJob
-			remoteManga.value = interactor.findLocal(manga.toManga())
+			remoteManga.value = interactor.findRemote(manga.toManga())
 		}
 	}
 

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

@@ -18,8 +18,7 @@ data class DownloadState(
 	val currentPage: Int = 0,
 	val eta: Long = -1L,
 	val localManga: LocalManga? = null,
-	val downloadedChapters: LongArray = LongArray(0),
-	val scheduledChapters: LongArray = LongArray(0),
+	val downloadedChapters: Int = 0,
 	val timestamp: Long = System.currentTimeMillis(),
 ) {
 
@@ -42,68 +41,17 @@ data class DownloadState(
 		.putLong(DATA_ETA, eta)
 		.putLong(DATA_TIMESTAMP, timestamp)
 		.putString(DATA_ERROR, error)
-		.putLongArray(DATA_CHAPTERS, downloadedChapters)
-		.putLongArray(DATA_CHAPTERS_SRC, scheduledChapters)
+		.putInt(DATA_CHAPTERS, downloadedChapters)
 		.putBoolean(DATA_INDETERMINATE, isIndeterminate)
 		.putBoolean(DATA_PAUSED, isPaused)
 		.build()
 
-	override fun equals(other: Any?): Boolean {
-		if (this === other) return true
-		if (javaClass != other?.javaClass) return false
-
-		other as DownloadState
-
-		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 (!scheduledChapters.contentEquals(other.scheduledChapters)) return false
-		if (timestamp != other.timestamp) return false
-		if (max != other.max) return false
-		if (progress != other.progress) return false
-		if (percent != other.percent) return false
-
-		return true
-	}
-
-	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 + scheduledChapters.contentHashCode()
-		result = 31 * result + timestamp.hashCode()
-		result = 31 * result + max
-		result = 31 * result + progress
-		result = 31 * result + percent.hashCode()
-		return result
-	}
-
-
 	companion object {
 
 		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_CHAPTERS_SRC = "chapters_src"
+		private const val DATA_CHAPTERS = "chapter_cnt"
 		private const val DATA_ETA = "eta"
 		private const val DATA_TIMESTAMP = "timestamp"
 		private const val DATA_ERROR = "error"
@@ -126,8 +74,6 @@ data class DownloadState(
 
 		fun getTimestamp(data: Data): Date = Date(data.getLong(DATA_TIMESTAMP, 0L))
 
-		fun getDownloadedChapters(data: Data): LongArray = data.getLongArray(DATA_CHAPTERS) ?: LongArray(0)
-
-		fun getScheduledChapters(data: Data): LongArray = data.getLongArray(DATA_CHAPTERS_SRC) ?: LongArray(0)
+		fun getDownloadedChapters(data: Data): Int = data.getInt(DATA_CHAPTERS, 0)
 	}
 }

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

@@ -2,28 +2,22 @@ package org.koitharu.kotatsu.download.ui.list
 
 import android.transition.TransitionManager
 import android.view.View
-import androidx.core.content.ContextCompat
 import androidx.core.view.isVisible
 import androidx.lifecycle.LifecycleOwner
-import androidx.recyclerview.widget.DividerItemDecoration
-import androidx.recyclerview.widget.RecyclerView
 import androidx.work.WorkInfo
 import coil.ImageLoader
+import coil.request.SuccessResult
+import coil.util.CoilUtils
 import com.hannesdorfmann.adapterdelegates4.dsl.adapterDelegateViewBinding
 import org.koitharu.kotatsu.R
-import org.koitharu.kotatsu.core.ui.BaseListAdapter
 import org.koitharu.kotatsu.core.ui.image.TrimTransformation
-import org.koitharu.kotatsu.core.util.ext.drawableEnd
 import org.koitharu.kotatsu.core.util.ext.enqueueWith
 import org.koitharu.kotatsu.core.util.ext.isAnimationsEnabled
 import org.koitharu.kotatsu.core.util.ext.newImageRequest
 import org.koitharu.kotatsu.core.util.ext.source
 import org.koitharu.kotatsu.core.util.ext.textAndVisible
 import org.koitharu.kotatsu.databinding.ItemDownloadBinding
-import org.koitharu.kotatsu.download.ui.list.chapters.DownloadChapter
-import org.koitharu.kotatsu.download.ui.list.chapters.downloadChapterAD
 import org.koitharu.kotatsu.list.ui.ListModelDiffCallback
-import org.koitharu.kotatsu.list.ui.adapter.ListItemType
 import org.koitharu.kotatsu.list.ui.model.ListModel
 import org.koitharu.kotatsu.parsers.util.format
 
@@ -36,9 +30,7 @@ fun downloadItemAD(
 ) {
 
 	val percentPattern = context.resources.getString(R.string.percent_string_pattern)
-	val expandIcon = ContextCompat.getDrawable(context, R.drawable.ic_expand_collapse)
-	val chaptersAdapter = BaseListAdapter<DownloadChapter>()
-		.addDelegate(ListItemType.CHAPTER, downloadChapterAD())
+	// val expandIcon = ContextCompat.getDrawable(context, R.drawable.ic_expand_collapse)
 
 	val clickListener = object : View.OnClickListener, View.OnLongClickListener {
 		override fun onClick(v: View) {
@@ -59,27 +51,26 @@ fun downloadItemAD(
 	binding.buttonResume.setOnClickListener(clickListener)
 	itemView.setOnClickListener(clickListener)
 	itemView.setOnLongClickListener(clickListener)
-	binding.recyclerViewChapters.addItemDecoration(DividerItemDecoration(context, RecyclerView.VERTICAL))
-	binding.recyclerViewChapters.adapter = chaptersAdapter
 
 	bind { payloads ->
 		if (ListModelDiffCallback.PAYLOAD_CHECKED_CHANGED in payloads && context.isAnimationsEnabled) {
 			TransitionManager.beginDelayedTransition(binding.constraintLayout)
 		}
 		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)
-			transformations(TrimTransformation())
-			source(item.manga.source)
-			enqueueWith(coil)
+		if ((CoilUtils.result(binding.imageViewCover) as? SuccessResult)?.memoryCacheKey != item.coverCacheKey) {
+			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)
+				transformations(TrimTransformation())
+				memoryCacheKey(item.coverCacheKey)
+				source(item.manga.source)
+				enqueueWith(coil)
+			}
 		}
-		binding.textViewTitle.isChecked = item.isExpanded
-		binding.textViewTitle.drawableEnd = if (item.isExpandable) expandIcon else null
-		binding.cardDetails.isVisible = item.isExpanded
-		chaptersAdapter.items = item.chapters
+		// binding.textViewTitle.isChecked = item.isExpanded
+		// binding.textViewTitle.drawableEnd = if (item.isExpandable) expandIcon else null
 		when (item.workState) {
 			WorkInfo.State.ENQUEUED,
 			WorkInfo.State.BLOCKED -> {
@@ -117,11 +108,11 @@ fun downloadItemAD(
 				binding.progressBar.isVisible = false
 				binding.progressBar.isEnabled = true
 				binding.textViewPercent.isVisible = false
-				if (item.totalChapters > 0) {
+				if (item.chaptersDownloaded > 0) {
 					binding.textViewDetails.text = context.resources.getQuantityString(
 						R.plurals.chapters,
-						item.totalChapters,
-						item.totalChapters,
+						item.chaptersDownloaded,
+						item.chaptersDownloaded,
 					)
 					binding.textViewDetails.isVisible = true
 				} else {

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

@@ -2,7 +2,7 @@ package org.koitharu.kotatsu.download.ui.list
 
 import android.text.format.DateUtils
 import androidx.work.WorkInfo
-import org.koitharu.kotatsu.download.ui.list.chapters.DownloadChapter
+import coil.memory.MemoryCache
 import org.koitharu.kotatsu.list.ui.ListModelDiffCallback
 import org.koitharu.kotatsu.list.ui.model.ListModel
 import org.koitharu.kotatsu.parsers.model.Manga
@@ -17,14 +17,15 @@ data class DownloadItemModel(
 	val manga: Manga,
 	val error: String?,
 	val max: Int,
-	val totalChapters: Int,
 	val progress: Int,
 	val eta: Long,
 	val timestamp: Date,
-	val chapters: List<DownloadChapter>,
+	val chaptersDownloaded: Int,
 	val isExpanded: Boolean,
 ) : ListModel, Comparable<DownloadItemModel> {
 
+	val coverCacheKey = MemoryCache.Key(manga.coverUrl, mapOf("dl" to "1"))
+
 	val percent: Float
 		get() = if (max > 0) progress / max.toFloat() else 0f
 
@@ -38,7 +39,7 @@ data class DownloadItemModel(
 		get() = workState == WorkInfo.State.RUNNING && isPaused
 
 	val isExpandable: Boolean
-		get() = chapters.isNotEmpty()
+		get() = false // TODO
 
 	fun getEtaString(): CharSequence? = if (hasEta) {
 		DateUtils.getRelativeTimeSpanString(

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

@@ -15,6 +15,7 @@ import dagger.hilt.android.AndroidEntryPoint
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.ui.BaseActivity
 import org.koitharu.kotatsu.core.ui.list.ListSelectionController
+import org.koitharu.kotatsu.core.ui.list.RecyclerScrollKeeper
 import org.koitharu.kotatsu.core.ui.util.MenuInvalidator
 import org.koitharu.kotatsu.core.ui.util.ReversibleActionObserver
 import org.koitharu.kotatsu.core.util.ext.observe
@@ -53,6 +54,7 @@ class DownloadsActivity : BaseActivity<ActivityDownloadsBinding>(),
 			addItemDecoration(decoration)
 			adapter = downloadsAdapter
 			selectionController.attachToRecyclerView(this)
+			RecyclerScrollKeeper(this).attach()
 		}
 		addMenuProvider(DownloadsMenuProvider(this, viewModel))
 		viewModel.items.observe(this) {

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

@@ -28,7 +28,6 @@ import org.koitharu.kotatsu.core.util.ext.MutableEventFlow
 import org.koitharu.kotatsu.core.util.ext.call
 import org.koitharu.kotatsu.core.util.ext.daysDiff
 import org.koitharu.kotatsu.download.domain.DownloadState
-import org.koitharu.kotatsu.download.ui.list.chapters.DownloadChapter
 import org.koitharu.kotatsu.download.ui.worker.DownloadWorker
 import org.koitharu.kotatsu.list.ui.model.EmptyState
 import org.koitharu.kotatsu.list.ui.model.ListHeader
@@ -239,8 +238,6 @@ class DownloadsViewModel @Inject constructor(
 		val mangaId = DownloadState.getMangaId(workData)
 		if (mangaId == 0L) return null
 		val manga = getManga(mangaId) ?: return null
-		val downloadedChapters = DownloadState.getDownloadedChapters(workData)
-		val scheduledChapters = DownloadState.getScheduledChapters(workData).toSet()
 		return DownloadItemModel(
 			id = id,
 			workState = state,
@@ -252,19 +249,8 @@ class DownloadsViewModel @Inject constructor(
 			progress = DownloadState.getProgress(workData),
 			eta = DownloadState.getEta(workData),
 			timestamp = DownloadState.getTimestamp(workData),
-			totalChapters = downloadedChapters.size,
+			chaptersDownloaded = DownloadState.getDownloadedChapters(workData),
 			isExpanded = isExpanded,
-			chapters = manga.chapters?.mapNotNull {
-				if (it.id in scheduledChapters) {
-					DownloadChapter(
-						number = it.number,
-						name = it.name,
-						isDownloaded = it.id in downloadedChapters,
-					)
-				} else {
-					null
-				}
-			}.orEmpty(),
 		)
 	}
 

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

@@ -38,6 +38,7 @@ import okio.buffer
 import okio.sink
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.exceptions.TooManyRequestExceptions
+import org.koitharu.kotatsu.core.model.ids
 import org.koitharu.kotatsu.core.network.CommonHeaders
 import org.koitharu.kotatsu.core.network.MangaHttpClient
 import org.koitharu.kotatsu.core.parser.MangaDataRepository
@@ -46,7 +47,6 @@ import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.util.Throttler
 import org.koitharu.kotatsu.core.util.ext.awaitFinishedWorkInfosByTag
 import org.koitharu.kotatsu.core.util.ext.awaitUpdateWork
-import org.koitharu.kotatsu.core.util.ext.awaitWorkInfoById
 import org.koitharu.kotatsu.core.util.ext.awaitWorkInfosByTag
 import org.koitharu.kotatsu.core.util.ext.deleteAwait
 import org.koitharu.kotatsu.core.util.ext.deleteWork
@@ -105,11 +105,12 @@ class DownloadWorker @AssistedInject constructor(
 		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)
+		publishState(DownloadState(manga, isIndeterminate = true))
+		val chaptersIds = inputData.getLongArray(CHAPTERS_IDS)?.takeUnless { it.isEmpty() }
+		val downloadedIds = getDoneChapters(manga)
 		return try {
-			downloadMangaImpl(chaptersIds, downloadedIds)
+			downloadMangaImpl(manga, chaptersIds, downloadedIds)
 			Result.success(currentState.toWorkData())
 		} catch (e: CancellationException) {
 			withContext(NonCancellable) {
@@ -147,10 +148,11 @@ class DownloadWorker @AssistedInject constructor(
 	}
 
 	private suspend fun downloadMangaImpl(
+		subject: Manga,
 		includedIds: LongArray?,
-		excludedIds: LongArray,
+		excludedIds: Set<Long>,
 	) {
-		var manga = currentState.manga
+		var manga = subject
 		val chaptersToSkip = excludedIds.toMutableSet()
 		withMangaLock(manga) {
 			ContextCompat.registerReceiver(
@@ -178,16 +180,9 @@ class DownloadWorker @AssistedInject constructor(
 					}
 				}
 				val chapters = getChapters(mangaDetails, includedIds)
-				publishState(
-					currentState.copy(scheduledChapters = LongArray(chapters.size) { i -> chapters[i].id }),
-				)
 				for ((chapterIndex, chapter) in chapters.withIndex()) {
 					if (chaptersToSkip.remove(chapter.id)) {
-						publishState(
-							currentState.copy(
-								downloadedChapters = currentState.downloadedChapters + chapter.id,
-							),
-						)
+						publishState(currentState.copy(downloadedChapters = currentState.downloadedChapters + 1))
 						continue
 					}
 					val pages = runFailsafe(pausingHandle) {
@@ -225,11 +220,7 @@ class DownloadWorker @AssistedInject constructor(
 							localStorageChanges.emit(LocalMangaInput.of(output.rootFile).getManga())
 						}.onFailure(Throwable::printStackTraceDebug)
 					}
-					publishState(
-						currentState.copy(
-							downloadedChapters = currentState.downloadedChapters + chapter.id,
-						),
-					)
+					publishState(currentState.copy(downloadedChapters = currentState.downloadedChapters + 1))
 				}
 				publishState(currentState.copy(isIndeterminate = true, eta = -1L))
 				output.mergeWithExisting()
@@ -336,11 +327,9 @@ class DownloadWorker @AssistedInject constructor(
 		setProgress(state.toWorkData())
 	}
 
-	private suspend fun getDoneChapters(): LongArray {
-		val work = WorkManager.getInstance(applicationContext).awaitWorkInfoById(id)
-			?: return LongArray(0)
-		return DownloadState.getDownloadedChapters(work.progress)
-	}
+	private suspend fun getDoneChapters(manga: Manga) = runCatchingCancellable {
+		localMangaRepository.getDetails(manga).chapters?.ids()
+	}.getOrNull().orEmpty()
 
 	private fun getChapters(
 		manga: Manga,

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

@@ -169,6 +169,7 @@ abstract class FavouritesDao {
 		ListSortOrder.NEWEST -> "favourites.created_at DESC"
 		ListSortOrder.ALPHABETIC -> "manga.title ASC"
 		ListSortOrder.NEW_CHAPTERS -> "(SELECT chapters_new FROM tracks WHERE tracks.manga_id = manga.manga_id) DESC"
+		ListSortOrder.UPDATED, // for legacy support
 		ListSortOrder.PROGRESS -> "(SELECT percent FROM history WHERE history.manga_id = manga.manga_id) DESC"
 		else -> throw IllegalArgumentException("Sort order $sortOrder is not supported")
 	}

app/src/main/kotlin/org/koitharu/kotatsu/history/data/HistoryRepository.kt

@@ -15,6 +15,7 @@ import org.koitharu.kotatsu.core.db.entity.toMangaTag
 import org.koitharu.kotatsu.core.db.entity.toMangaTags
 import org.koitharu.kotatsu.core.model.MangaHistory
 import org.koitharu.kotatsu.core.model.findById
+import org.koitharu.kotatsu.core.model.isLocal
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.ui.util.ReversibleHandle
 import org.koitharu.kotatsu.core.util.ext.mapItems
@@ -185,7 +186,7 @@ class HistoryRepository @Inject constructor(
 
 	private suspend fun HistoryEntity.recoverIfNeeded(manga: Manga): HistoryEntity {
 		val chapters = manga.chapters
-		if (chapters.isNullOrEmpty() || chapters.findById(chapterId) != null) {
+		if (manga.isLocal || chapters.isNullOrEmpty() || chapters.findById(chapterId) != null) {
 			return this
 		}
 		val newChapterId = chapters.getOrNull(

app/src/main/kotlin/org/koitharu/kotatsu/history/ui/HistoryListFragment.kt

@@ -9,6 +9,7 @@ import dagger.hilt.android.AndroidEntryPoint
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.os.NetworkManageIntent
 import org.koitharu.kotatsu.core.ui.list.ListSelectionController
+import org.koitharu.kotatsu.core.ui.list.RecyclerScrollKeeper
 import org.koitharu.kotatsu.core.util.ext.addMenuProvider
 import org.koitharu.kotatsu.databinding.FragmentListBinding
 import org.koitharu.kotatsu.list.ui.MangaListFragment
@@ -23,6 +24,7 @@ class HistoryListFragment : MangaListFragment() {
 
 	override fun onViewBindingCreated(binding: FragmentListBinding, savedInstanceState: Bundle?) {
 		super.onViewBindingCreated(binding, savedInstanceState)
+		RecyclerScrollKeeper(binding.recyclerView).attach()
 		addMenuProvider(HistoryListMenuProvider(binding.root.context, viewModel))
 	}
 

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

@@ -183,7 +183,8 @@ class MainActivity : BaseActivity<ActivityMainBinding>(), AppBarOwner, BottomNav
 
 	override fun onOptionsItemSelected(item: MenuItem): Boolean = when (item.itemId) {
 		android.R.id.home -> if (isSearchOpened()) {
-			super.onOptionsItemSelected(item)
+			closeSearchCallback.handleOnBackPressed()
+			true
 		} else {
 			viewBinding.searchView.requestFocus()
 			true

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

@@ -52,6 +52,7 @@ import org.koitharu.kotatsu.core.util.ext.postDelayed
 import org.koitharu.kotatsu.core.util.ext.setValueRounded
 import org.koitharu.kotatsu.core.util.ext.zipWithPrevious
 import org.koitharu.kotatsu.databinding.ActivityReaderBinding
+import org.koitharu.kotatsu.details.ui.DetailsActivity
 import org.koitharu.kotatsu.parsers.model.Manga
 import org.koitharu.kotatsu.parsers.model.MangaChapter
 import org.koitharu.kotatsu.reader.ui.config.ReaderConfigSheet
@@ -147,6 +148,11 @@ class ReaderActivity :
 		}
 	}
 
+	override fun getParentActivityIntent(): Intent? {
+		val manga = viewModel.manga?.toManga() ?: return null
+		return DetailsActivity.newIntent(this, manga)
+	}
+
 	override fun onUserInteraction() {
 		super.onUserInteraction()
 		scrollTimer.onUserInteraction()
@@ -249,6 +255,7 @@ class ReaderActivity :
 
 	override fun dispatchTouchEvent(ev: MotionEvent): Boolean {
 		touchHelper.dispatchTouchEvent(ev)
+		scrollTimer.onTouchEvent(ev)
 		return super.dispatchTouchEvent(ev)
 	}
 

app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/ScrollTimer.kt

@@ -1,5 +1,6 @@
 package org.koitharu.kotatsu.reader.ui
 
+import android.view.MotionEvent
 import androidx.lifecycle.LifecycleOwner
 import androidx.lifecycle.lifecycleScope
 import dagger.assisted.Assisted
@@ -8,11 +9,14 @@ import dagger.assisted.AssistedInject
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.flow.flowOn
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.isActive
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.yield
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.prefs.observeAsFlow
 import kotlin.math.roundToLong
@@ -33,6 +37,7 @@ class ScrollTimer @AssistedInject constructor(
 	private var delayMs: Long = 10L
 	private var pageSwitchDelay: Long = 100L
 	private var resumeAt = 0L
+	private var isTouchDown = MutableStateFlow(false)
 
 	var isEnabled: Boolean = false
 		set(value) {
@@ -55,6 +60,19 @@ class ScrollTimer @AssistedInject constructor(
 		resumeAt = System.currentTimeMillis() + INTERACTION_SKIP_MS
 	}
 
+	fun onTouchEvent(event: MotionEvent) {
+		when (event.actionMasked) {
+			MotionEvent.ACTION_DOWN -> {
+				isTouchDown.value = true
+			}
+
+			MotionEvent.ACTION_UP,
+			MotionEvent.ACTION_CANCEL -> {
+				isTouchDown.value = false
+			}
+		}
+	}
+
 	private fun onSpeedChanged(speed: Float) {
 		if (speed <= 0f) {
 			delayMs = 0L
@@ -108,12 +126,18 @@ class ScrollTimer @AssistedInject constructor(
 	}
 
 	private fun isPaused(): Boolean {
-		return resumeAt > System.currentTimeMillis()
+		return isTouchDown.value || resumeAt > System.currentTimeMillis()
 	}
 
 	private suspend fun delayUntilResumed() {
 		while (isPaused()) {
-			delay(resumeAt - System.currentTimeMillis())
+			val delayTime = resumeAt - System.currentTimeMillis()
+			if (delayTime > 0) {
+				delay(delayTime)
+			} else {
+				yield()
+			}
+			isTouchDown.first { !it }
 		}
 	}
 

app/src/main/kotlin/org/koitharu/kotatsu/settings/backup/BackupViewModel.kt

@@ -43,7 +43,6 @@ class BackupViewModel @Inject constructor(
 
 				backup.finish()
 				progress.value = 1f
-				backup.close()
 				backup.file
 			}
 			onBackupDone.call(file)

app/src/main/kotlin/org/koitharu/kotatsu/settings/backup/PeriodicalBackupSettingsFragment.kt

@@ -0,0 +1,98 @@
+package org.koitharu.kotatsu.settings.backup
+
+import android.content.Context
+import android.content.Intent
+import android.net.Uri
+import android.os.Bundle
+import android.view.View
+import androidx.activity.result.ActivityResultCallback
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.documentfile.provider.DocumentFile
+import androidx.preference.Preference
+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.core.backup.DIR_BACKUPS
+import org.koitharu.kotatsu.core.prefs.AppSettings
+import org.koitharu.kotatsu.core.ui.BasePreferenceFragment
+import org.koitharu.kotatsu.core.util.ext.resolveFile
+import org.koitharu.kotatsu.core.util.ext.tryLaunch
+import org.koitharu.kotatsu.core.util.ext.viewLifecycleScope
+import java.io.File
+import java.text.SimpleDateFormat
+import javax.inject.Inject
+
+@AndroidEntryPoint
+class PeriodicalBackupSettingsFragment : BasePreferenceFragment(R.string.periodic_backups),
+	ActivityResultCallback<Uri?> {
+
+	@Inject
+	lateinit var scheduler: PeriodicalBackupWorker.Scheduler
+
+	private val outputSelectCall = registerForActivityResult(
+		ActivityResultContracts.OpenDocumentTree(),
+		this,
+	)
+
+	override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
+		addPreferencesFromResource(R.xml.pref_backup_periodic)
+	}
+
+	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+		super.onViewCreated(view, savedInstanceState)
+		bindOutputSummary()
+		bindLastBackupInfo()
+	}
+
+	override fun onPreferenceTreeClick(preference: Preference): Boolean {
+		return when (preference.key) {
+			AppSettings.KEY_BACKUP_PERIODICAL_OUTPUT -> outputSelectCall.tryLaunch(null)
+			else -> super.onPreferenceTreeClick(preference)
+		}
+	}
+
+	override fun onActivityResult(result: Uri?) {
+		if (result != null) {
+			val takeFlags: Int = Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION
+			context?.contentResolver?.takePersistableUriPermission(result, takeFlags)
+			settings.periodicalBackupOutput = result
+			bindOutputSummary()
+		}
+	}
+
+	private fun bindOutputSummary() {
+		val preference = findPreference<Preference>(AppSettings.KEY_BACKUP_PERIODICAL_OUTPUT) ?: return
+		viewLifecycleScope.launch {
+			preference.summary = withContext(Dispatchers.Default) {
+				val value = settings.periodicalBackupOutput
+				value?.toUserFriendlyString(preference.context) ?: preference.context.run {
+					getExternalFilesDir(DIR_BACKUPS) ?: File(filesDir, DIR_BACKUPS)
+				}.path
+			}
+		}
+	}
+
+	private fun bindLastBackupInfo() {
+		val preference = findPreference<Preference>(AppSettings.KEY_BACKUP_PERIODICAL_LAST) ?: return
+		viewLifecycleScope.launch {
+			val lastDate = withContext(Dispatchers.Default) {
+				scheduler.getLastSuccessfulBackup()
+			}
+			preference.summary = lastDate?.let {
+				val format = SimpleDateFormat.getDateTimeInstance(SimpleDateFormat.MEDIUM, SimpleDateFormat.SHORT)
+				preference.context.getString(R.string.last_successful_backup, format.format(it))
+			}
+			preference.isVisible = lastDate != null
+		}
+	}
+
+	private fun Uri.toUserFriendlyString(context: Context): String {
+		val df = DocumentFile.fromTreeUri(context, this)
+		if (df?.canWrite() != true) {
+			return context.getString(R.string.invalid_value_message)
+		}
+		return resolveFile(context)?.path ?: toString()
+	}
+}

app/src/main/kotlin/org/koitharu/kotatsu/settings/backup/PeriodicalBackupWorker.kt

@@ -0,0 +1,116 @@
+package org.koitharu.kotatsu.settings.backup
+
+import android.content.Context
+import android.os.Build
+import androidx.documentfile.provider.DocumentFile
+import androidx.hilt.work.HiltWorker
+import androidx.work.Constraints
+import androidx.work.CoroutineWorker
+import androidx.work.ExistingPeriodicWorkPolicy
+import androidx.work.PeriodicWorkRequestBuilder
+import androidx.work.WorkInfo
+import androidx.work.WorkManager
+import androidx.work.WorkerParameters
+import androidx.work.await
+import androidx.work.workDataOf
+import dagger.Reusable
+import dagger.assisted.Assisted
+import dagger.assisted.AssistedInject
+import okio.buffer
+import okio.sink
+import okio.source
+import org.koitharu.kotatsu.core.backup.BackupRepository
+import org.koitharu.kotatsu.core.backup.BackupZipOutput
+import org.koitharu.kotatsu.core.prefs.AppSettings
+import org.koitharu.kotatsu.core.util.ext.awaitUniqueWorkInfoByName
+import org.koitharu.kotatsu.core.util.ext.deleteAwait
+import org.koitharu.kotatsu.core.util.ext.writeAllCancellable
+import org.koitharu.kotatsu.settings.work.PeriodicWorkScheduler
+import java.util.Date
+import java.util.concurrent.TimeUnit
+import javax.inject.Inject
+
+@HiltWorker
+class PeriodicalBackupWorker @AssistedInject constructor(
+	@Assisted appContext: Context,
+	@Assisted params: WorkerParameters,
+	private val repository: BackupRepository,
+	private val settings: AppSettings,
+) : CoroutineWorker(appContext, params) {
+
+	override suspend fun doWork(): Result {
+		val resultData = workDataOf(DATA_TIMESTAMP to Date().time)
+		val file = BackupZipOutput(applicationContext).use { backup ->
+			backup.put(repository.createIndex())
+			backup.put(repository.dumpHistory())
+			backup.put(repository.dumpCategories())
+			backup.put(repository.dumpFavourites())
+			backup.put(repository.dumpBookmarks())
+			backup.put(repository.dumpSettings())
+			backup.finish()
+			backup.file
+		}
+		val dirUri = settings.periodicalBackupOutput ?: return Result.success(resultData)
+		val target = DocumentFile.fromTreeUri(applicationContext, dirUri)
+			?.createFile("application/zip", file.name)
+			?.uri ?: return Result.failure()
+		applicationContext.contentResolver.openOutputStream(target)?.use { output ->
+			file.source().use { input ->
+				output.sink().buffer().writeAllCancellable(input)
+			}
+		} ?: return Result.failure()
+		file.deleteAwait()
+		return Result.success(resultData)
+	}
+
+	@Reusable
+	class Scheduler @Inject constructor(
+		private val workManager: WorkManager,
+		private val settings: AppSettings,
+	) : PeriodicWorkScheduler {
+
+		override suspend fun schedule() {
+			val constraints = Constraints.Builder()
+				.setRequiresStorageNotLow(true)
+			if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+				constraints.setRequiresDeviceIdle(true)
+			}
+			val request = PeriodicWorkRequestBuilder<PeriodicalBackupWorker>(
+				settings.periodicalBackupFrequency,
+				TimeUnit.DAYS,
+			).setConstraints(constraints.build())
+				.addTag(TAG)
+				.build()
+			workManager
+				.enqueueUniquePeriodicWork(TAG, ExistingPeriodicWorkPolicy.UPDATE, request)
+				.await()
+		}
+
+		override suspend fun unschedule() {
+			workManager
+				.cancelUniqueWork(TAG)
+				.await()
+		}
+
+		override suspend fun isScheduled(): Boolean {
+			return workManager
+				.awaitUniqueWorkInfoByName(TAG)
+				.any { !it.state.isFinished }
+		}
+
+		suspend fun getLastSuccessfulBackup(): Date? {
+			return workManager
+				.awaitUniqueWorkInfoByName(TAG)
+				.lastOrNull { x -> x.state == WorkInfo.State.SUCCEEDED }
+				?.outputData
+				?.getLong(DATA_TIMESTAMP, 0)
+				?.let { if (it != 0L) Date(it) else null }
+		}
+	}
+
+	private companion object {
+
+		const val TAG = "backups"
+		const val DATA_TIMESTAMP = "ts"
+	}
+}

app/src/main/kotlin/org/koitharu/kotatsu/settings/userdata/UserDataSettingsFragment.kt

@@ -65,6 +65,7 @@ class UserDataSettingsFragment : BasePreferenceFragment(R.string.data_and_privac
 		findPreference<Preference>(AppSettings.KEY_PAGES_CACHE_CLEAR)?.bindBytesSizeSummary(checkNotNull(viewModel.cacheSizes[CacheDir.PAGES]))
 		findPreference<Preference>(AppSettings.KEY_THUMBS_CACHE_CLEAR)?.bindBytesSizeSummary(checkNotNull(viewModel.cacheSizes[CacheDir.THUMBS]))
 		findPreference<Preference>(AppSettings.KEY_HTTP_CACHE_CLEAR)?.bindBytesSizeSummary(viewModel.httpCacheSize)
+		bindPeriodicalBackupSummary()
 		findPreference<Preference>(AppSettings.KEY_SEARCH_HISTORY_CLEAR)?.let { pref ->
 			viewModel.searchHistoryCount.observe(viewLifecycleOwner) {
 				pref.summary = if (it < 0) {
@@ -200,6 +201,20 @@ class UserDataSettingsFragment : BasePreferenceFragment(R.string.data_and_privac
 		}
 	}
 
+	private fun bindPeriodicalBackupSummary() {
+		val preference = findPreference<Preference>(AppSettings.KEY_BACKUP_PERIODICAL_ENABLED) ?: return
+		val entries = resources.getStringArray(R.array.backup_frequency)
+		val entryValues = resources.getStringArray(R.array.values_backup_frequency)
+		viewModel.periodicalBackupFrequency.observe(viewLifecycleOwner) { freq ->
+			preference.summary = if (freq == 0L) {
+				getString(R.string.disabled)
+			} else {
+				val index = entryValues.indexOf(freq.toString())
+				entries.getOrNull(index)
+			}
+		}
+	}
+
 	private fun clearSearchHistory() {
 		MaterialAlertDialogBuilder(context ?: return)
 			.setTitle(R.string.clear_search_history)

app/src/main/kotlin/org/koitharu/kotatsu/settings/userdata/UserDataSettingsViewModel.kt

@@ -5,12 +5,15 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.cancelAndJoin
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.flatMapLatest
+import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.runInterruptible
 import okhttp3.Cache
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.network.cookies.MutableCookieJar
 import org.koitharu.kotatsu.core.prefs.AppSettings
+import org.koitharu.kotatsu.core.prefs.observeAsFlow
 import org.koitharu.kotatsu.core.ui.BaseViewModel
 import org.koitharu.kotatsu.core.ui.util.ReversibleAction
 import org.koitharu.kotatsu.core.util.ext.MutableEventFlow
@@ -29,6 +32,7 @@ class UserDataSettingsViewModel @Inject constructor(
 	private val searchRepository: MangaSearchRepository,
 	private val trackingRepository: TrackingRepository,
 	private val cookieJar: MutableCookieJar,
+	private val settings: AppSettings,
 ) : BaseViewModel() {
 
 	val onActionDone = MutableEventFlow<ReversibleAction>()
@@ -40,6 +44,20 @@ class UserDataSettingsViewModel @Inject constructor(
 	val cacheSizes = EnumMap<CacheDir, MutableStateFlow<Long>>(CacheDir::class.java)
 	val storageUsage = MutableStateFlow<StorageUsage?>(null)
 
+	val periodicalBackupFrequency = settings.observeAsFlow(
+		key = AppSettings.KEY_BACKUP_PERIODICAL_ENABLED,
+		valueProducer = { isPeriodicalBackupEnabled },
+	).flatMapLatest { isEnabled ->
+		if (isEnabled) {
+			settings.observeAsFlow(
+				key = AppSettings.KEY_BACKUP_PERIODICAL_FREQUENCY,
+				valueProducer = { periodicalBackupFrequency },
+			)
+		} else {
+			flowOf(0)
+		}
+	}
+
 	private var storageUsageJob: Job? = null
 
 	init {

app/src/main/kotlin/org/koitharu/kotatsu/settings/work/WorkScheduleManager.kt

@@ -5,6 +5,7 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.util.ext.processLifecycleScope
+import org.koitharu.kotatsu.settings.backup.PeriodicalBackupWorker
 import org.koitharu.kotatsu.suggestions.ui.SuggestionsWorker
 import org.koitharu.kotatsu.tracker.work.TrackWorker
 import javax.inject.Inject
@@ -13,6 +14,7 @@ class WorkScheduleManager @Inject constructor(
 	private val settings: AppSettings,
 	private val suggestionScheduler: SuggestionsWorker.Scheduler,
 	private val trackerScheduler: TrackWorker.Scheduler,
+	private val periodicalBackupScheduler: PeriodicalBackupWorker.Scheduler,
 ) : SharedPreferences.OnSharedPreferenceChangeListener {
 
 	override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences?, key: String?) {
@@ -30,6 +32,13 @@ class WorkScheduleManager @Inject constructor(
 				isEnabled = settings.isSuggestionsEnabled,
 				force = key != AppSettings.KEY_SUGGESTIONS,
 			)
+
+			AppSettings.KEY_BACKUP_PERIODICAL_ENABLED,
+			AppSettings.KEY_BACKUP_PERIODICAL_FREQUENCY -> updateWorker(
+				scheduler = periodicalBackupScheduler,
+				isEnabled = settings.isPeriodicalBackupEnabled,
+				force = key != AppSettings.KEY_BACKUP_PERIODICAL_ENABLED,
+			)
 		}
 	}
 
@@ -38,6 +47,7 @@ class WorkScheduleManager @Inject constructor(
 		processLifecycleScope.launch(Dispatchers.Default) {
 			updateWorkerImpl(trackerScheduler, settings.isTrackerEnabled, false)
 			updateWorkerImpl(suggestionScheduler, settings.isSuggestionsEnabled, false)
+			updateWorkerImpl(periodicalBackupScheduler, settings.isPeriodicalBackupEnabled, false)
 		}
 	}
 

app/src/main/kotlin/org/koitharu/kotatsu/sync/domain/SyncHelper.kt

@@ -130,9 +130,6 @@ class SyncHelper @AssistedInject constructor(
 	private fun upsertHistory(json: JSONArray, timestamp: Long): Array<ContentProviderResult> {
 		val uri = uri(authorityHistory, TABLE_HISTORY)
 		val operations = ArrayList<ContentProviderOperation>()
-		operations += ContentProviderOperation.newDelete(uri)
-			.withSelection("updated_at < ?", arrayOf(timestamp.toString()))
-			.build()
 		json.mapJSONTo(operations) { jo ->
 			operations.addAll(upsertManga(jo.removeJSONObject("manga"), authorityHistory))
 			ContentProviderOperation.newInsert(uri)
@@ -145,9 +142,6 @@ class SyncHelper @AssistedInject constructor(
 	private fun upsertFavouriteCategories(json: JSONArray, timestamp: Long): Array<ContentProviderResult> {
 		val uri = uri(authorityFavourites, TABLE_FAVOURITE_CATEGORIES)
 		val operations = ArrayList<ContentProviderOperation>()
-		operations += ContentProviderOperation.newDelete(uri)
-			.withSelection("created_at < ?", arrayOf(timestamp.toString()))
-			.build()
 		json.mapJSONTo(operations) { jo ->
 			ContentProviderOperation.newInsert(uri)
 				.withValues(jo.toContentValues())
@@ -159,9 +153,6 @@ class SyncHelper @AssistedInject constructor(
 	private fun upsertFavourites(json: JSONArray, timestamp: Long): Array<ContentProviderResult> {
 		val uri = uri(authorityFavourites, TABLE_FAVOURITES)
 		val operations = ArrayList<ContentProviderOperation>()
-		operations += ContentProviderOperation.newDelete(uri)
-			.withSelection("created_at < ?", arrayOf(timestamp.toString()))
-			.build()
 		json.mapJSONTo(operations) { jo ->
 			operations.addAll(upsertManga(jo.removeJSONObject("manga"), authorityFavourites))
 			ContentProviderOperation.newInsert(uri)

app/src/main/res/layout/item_download.xml

@@ -104,31 +104,6 @@
 			app:layout_constraintTop_toBottomOf="@id/textView_status"
 			tools:text="@tools:sample/lorem[3]" />
 
-		<com.google.android.material.card.MaterialCardView
-			android:id="@+id/card_details"
-			android:layout_width="0dp"
-			android:layout_height="0dp"
-			android:layout_marginHorizontal="12dp"
-			android:layout_marginTop="12dp"
-			app:layout_constraintEnd_toEndOf="parent"
-			app:layout_constraintHeight_default="wrap"
-			app:layout_constraintHeight_max="280dp"
-			app:layout_constraintStart_toStartOf="parent"
-			app:layout_constraintTop_toBottomOf="@id/progressBar"
-			app:shapeAppearance="?shapeAppearanceCornerMedium">
-
-			<androidx.recyclerview.widget.RecyclerView
-				android:id="@+id/recyclerView_chapters"
-				android:layout_width="match_parent"
-				android:layout_height="match_parent"
-				android:orientation="vertical"
-				android:scrollbars="vertical"
-				app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
-				tools:itemCount="200"
-				tools:listitem="@layout/item_chapter_download" />
-
-		</com.google.android.material.card.MaterialCardView>
-
 		<Button
 			android:id="@+id/button_pause"
 			style="?materialButtonOutlinedStyle"
@@ -139,7 +114,7 @@
 			android:text="@string/pause"
 			android:visibility="gone"
 			app:layout_constraintEnd_toStartOf="@id/button_resume"
-			app:layout_constraintTop_toBottomOf="@id/card_details"
+			app:layout_constraintTop_toBottomOf="@id/progressBar"
 			tools:visibility="visible" />
 
 		<Button
@@ -152,7 +127,7 @@
 			android:text="@string/resume"
 			android:visibility="gone"
 			app:layout_constraintEnd_toStartOf="@id/button_cancel"
-			app:layout_constraintTop_toBottomOf="@id/card_details" />
+			app:layout_constraintTop_toBottomOf="@id/progressBar" />
 
 		<Button
 			android:id="@+id/button_cancel"
@@ -164,7 +139,7 @@
 			android:text="@android:string/cancel"
 			android:visibility="gone"
 			app:layout_constraintEnd_toEndOf="parent"
-			app:layout_constraintTop_toBottomOf="@id/card_details"
+			app:layout_constraintTop_toBottomOf="@id/progressBar"
 			tools:visibility="visible" />
 
 	</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -2,18 +2,58 @@
 <resources>
     <plurals name="new_chapters">
         <item quantity="zero">%1$d فصل جديد</item>
-        <item quantity="one"/>
-        <item quantity="two"/>
-        <item quantity="few"/>
+        <item quantity="one">%1$d فصل جديد</item>
+        <item quantity="two">%1$d فصول جديدة</item>
+        <item quantity="few">%1$d فصول جديدة</item>
         <item quantity="many">%1$d فصول جديدة</item>
-        <item quantity="other"/>
+        <item quantity="other">%1$d فصول جديدة</item>
     </plurals>
     <plurals name="chapters">
-        <item quantity="zero">لا يوجد</item>
+        <item quantity="zero">%1$d فصل</item>
         <item quantity="one">%1$d فصل</item>
         <item quantity="two">%1$d فصلين</item>
-        <item quantity="few">%1$d بعض فصول</item>
-        <item quantity="many">%1$d عدة فصول</item>
-        <item quantity="other">أخرى</item>
+        <item quantity="few">%1$d فصول</item>
+        <item quantity="many">%1$d فصول</item>
+        <item quantity="other">%1$d فصول</item>
+    </plurals>
+    <plurals name="minutes_ago">
+        <item quantity="zero">%1$d دقيقة مضت</item>
+        <item quantity="one">%1$d دقيقة مضت</item>
+        <item quantity="two">%1$d دقائق مضت</item>
+        <item quantity="few">%1$d دقائق مضت</item>
+        <item quantity="many">%1$d دقائق مضت</item>
+        <item quantity="other">%1$d دقائق مضت</item>
+    </plurals>
+    <plurals name="items">
+        <item quantity="zero">%1$d عنصر</item>
+        <item quantity="one">%1$d عنصر</item>
+        <item quantity="two">%1$d عناصر</item>
+        <item quantity="few">%1$d عناصر</item>
+        <item quantity="many">%1$d عناصر</item>
+        <item quantity="other">%1$d عناصر</item>
+    </plurals>
+    <plurals name="months_ago">
+        <item quantity="zero">%1$d شهر مضا</item>
+        <item quantity="one">%1$d شهر مضا</item>
+        <item quantity="two">%1$d شهرين مضت</item>
+        <item quantity="few">%1$d أشهر مضت</item>
+        <item quantity="many">%1$d أشهر مضت</item>
+        <item quantity="other">%1$d أشهر مضت</item>
+    </plurals>
+    <plurals name="days_ago">
+        <item quantity="zero">%1$d يوم مضا</item>
+        <item quantity="one">%1$d يوم مضا</item>
+        <item quantity="two">%1$d يومين مضت</item>
+        <item quantity="few">%1$d أيام مضت</item>
+        <item quantity="many">%1$d أيام مضت</item>
+        <item quantity="other">%1$d أيام مضت</item>
+    </plurals>
+    <plurals name="hours_ago">
+        <item quantity="zero">%1$d ساعة مضت</item>
+        <item quantity="one">%1$d ساعة مضت</item>
+        <item quantity="two">%1$d ساعات مضت</item>
+        <item quantity="few">%1$d ساعات مضت</item>
+        <item quantity="many">%1$d ساعات مضت</item>
+        <item quantity="other">%1$d ساعات مضت</item>
     </plurals>
 </resources>

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

@@ -156,7 +156,7 @@
     <string name="long_ago">منذ فترة</string>
     <string name="notifications_settings">إعدادات الإشعارات</string>
     <string name="save_manga">حفظ</string>
-    <string name="large_manga_save_confirm">تحتوي هذه المانجا على s%. حفظ الكل؟</string>
+    <string name="large_manga_save_confirm">هذه المانجا فيها %s . حفظ الكل</string>
     <string name="read_more">اقرأ المزيد</string>
     <string name="search_results">نتائج البحث</string>
     <string name="file_not_found">الملف غير موجود</string>
@@ -172,9 +172,10 @@
     <string name="data_restored_success">استعيدت جميع البيانات</string>
     <string name="backup_information">يمكنك إنشاء نسخة احتياطية من السجل الخاص بك والمفضلة واستعادتها</string>
     <string name="available_sources">المصادر المتاحة</string>
-    <string name="external_storage">التخزين الخارجي</string>
+    <string name="external_storage">تخزين خارجي</string>
     <string name="silent">صامت</string>
     <string name="today">اليوم</string>
     <string name="system_default">الافتراضي</string>
     <string name="sign_in">تسجبل الدخول</string>
+    <string name="domain">المجال</string>
 </resources>

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

@@ -494,4 +494,13 @@
     <string name="enhanced_colors_summary">Reduce el banding, pero puede afectar al rendimiento</string>
     <string name="by_relevance">Relevancia</string>
     <string name="online_variant">Variante en línea</string>
+    <string name="frequency_every_day">Cada día</string>
+    <string name="backup_frequency">Frecuencia de creación de las copias de seguridad</string>
+    <string name="periodic_backups_enable">Activar las copias de seguridad periódicas</string>
+    <string name="frequency_every_2_days">Cada 2 días</string>
+    <string name="frequency_once_per_week">Una vez a la semana</string>
+    <string name="periodic_backups">Copias de seguridad periódicas</string>
+    <string name="frequency_twice_per_month">Dos veces al mes</string>
+    <string name="frequency_once_per_month">Una vez al mes</string>
+    <string name="backups_output_directory">Directorio para guardar la copia de seguridad</string>
 </resources>

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

@@ -494,4 +494,13 @@
     <string name="list_options">Opsyon sa Listahan</string>
     <string name="by_relevance">Kaugnayan</string>
     <string name="online_variant">Online na baryante</string>
+    <string name="frequency_every_day">Araw araw</string>
+    <string name="backup_frequency">Dalas ng paglikha ng backup</string>
+    <string name="periodic_backups_enable">Paganahin ang periodic na pag-backup</string>
+    <string name="frequency_every_2_days">Kada 2 araw</string>
+    <string name="frequency_once_per_week">Isang beses kada linggo</string>
+    <string name="periodic_backups">Mga periodic na pag-backup</string>
+    <string name="frequency_twice_per_month">Dalawang beses bawat buwan</string>
+    <string name="frequency_once_per_month">Isang beses bawat buwan</string>
+    <string name="backups_output_directory">Output directory ng mga backup</string>
 </resources>

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

@@ -41,11 +41,11 @@
     <string name="remove">Remover</string>
     <string name="_s_deleted_from_local_storage">«%s» deletado do armazenamento local</string>
     <string name="save_page">Salvar página</string>
-    <string name="page_saved">Salvou</string>
+    <string name="page_saved">Salvo</string>
     <string name="share_image">Compartilhar imagem</string>
     <string name="_import">Importar</string>
     <string name="updated">Atualizado</string>
-    <string name="delete">Deletar</string>
+    <string name="delete">Delete</string>
     <string name="operation_not_supported">Essa operação não é suportada</string>
     <string name="clear_pages_cache">Limpar cache de página</string>
     <string name="text_file_sizes">B|kB|MB|GB|TB</string>
@@ -66,10 +66,10 @@
     <string name="internal_storage">Armazenamento interno</string>
     <string name="external_storage">Armazenamento externo</string>
     <string name="domain">Domínio</string>
-    <string name="app_update_available">Uma nova versão da app está disponível</string>
+    <string name="app_update_available">Uma nova versão do app está disponível</string>
     <string name="open_in_browser">Abrir no navegador da web</string>
     <string name="large_manga_save_confirm">Este mangá tem %s. Salvar tudo isso\?</string>
-    <string name="save_manga">Salve</string>
+    <string name="save_manga">Salvar</string>
     <string name="notifications">Notificações</string>
     <string name="new_chapters">Novos capítulos</string>
     <string name="download">Download</string>
@@ -483,4 +483,15 @@
     <string name="show">Mostrar</string>
     <string name="color_black">Preto</string>
     <string name="this_month">Este mês</string>
+    <string name="categories">Categorias</string>
+    <string name="list_options">Listar opções</string>
+    <string name="suggest_new_sources">Sugira novas fontes após atualização do app</string>
+    <string name="enhanced_colors_summary">Reduz faixas, mas pode afetar o desempenho</string>
+    <string name="online_variant">Variante online</string>
+    <string name="by_relevance">Relevância</string>
+    <string name="enhanced_colors">Modo de cor 32-bit</string>
+    <string name="suggest_new_sources_summary">Solicitar a ativação de fontes recém-adicionadas após atualizar o aplicativo</string>
+    <string name="state_abandoned">Caiu</string>
+    <string name="keep_screen_on">Manter a tela ligada</string>
+    <string name="keep_screen_on_summary">Não desligue a tela enquanto estiver lendo mangá</string>
 </resources>

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

@@ -494,4 +494,14 @@
     <string name="enhanced_colors">32-битный цветовой режим</string>
     <string name="suggest_new_sources_summary">Предлагать источники манги, добавленные в последнем обновлении приложения</string>
     <string name="online_variant">Онлайн вариант</string>
+    <string name="frequency_every_day">Каждый день</string>
+    <string name="backup_frequency">Частота создания резервных копий</string>
+    <string name="periodic_backups_enable">Включить резервное копирование по расписанию</string>
+    <string name="frequency_every_2_days">Каждые 2 дня</string>
+    <string name="frequency_once_per_week">Раз в неделю</string>
+    <string name="periodic_backups">Резервное копирование по расписанию</string>
+    <string name="frequency_twice_per_month">Дважды в месяц</string>
+    <string name="frequency_once_per_month">Один раз в месяц</string>
+    <string name="backups_output_directory">Каталог для сохранения резервных копий</string>
+    <string name="last_successful_backup">Последняя резервная копия: %s</string>
 </resources>

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

@@ -494,4 +494,13 @@
     <string name="list_options">Seçenekleri listele</string>
     <string name="online_variant">Çevrimiçi varyant</string>
     <string name="by_relevance">Alaka düzeyi</string>
+    <string name="frequency_every_day">Her gün</string>
+    <string name="backup_frequency">Yedek oluşturma sıklığı</string>
+    <string name="periodic_backups_enable">Zamanlı yedeklemeleri etkinleştirin</string>
+    <string name="frequency_every_2_days">2 günde 1</string>
+    <string name="frequency_once_per_week">Haftada 1 kez</string>
+    <string name="periodic_backups">Zamanlı yedekleme</string>
+    <string name="frequency_twice_per_month">Ayda 2 kere</string>
+    <string name="frequency_once_per_month">Ayda 1 kere</string>
+    <string name="backups_output_directory">Yedekleme dizini</string>
 </resources>

app/src/main/res/values/arrays.xml

@@ -1,51 +1,51 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-	<string-array name="themes">
+	<string-array name="themes" translatable="false">
 		<item>@string/automatic</item>
 		<item>@string/light</item>
 		<item>@string/dark</item>
 	</string-array>
-	<string-array name="reader_switchers">
+	<string-array name="reader_switchers" translatable="false">
 		<item>@string/taps_on_edges</item>
 		<item>@string/volume_buttons</item>
 	</string-array>
-	<string-array name="zoom_modes">
+	<string-array name="zoom_modes" translatable="false">
 		<item>@string/zoom_mode_fit_center</item>
 		<item>@string/zoom_mode_fit_height</item>
 		<item>@string/zoom_mode_fit_width</item>
 		<item>@string/zoom_mode_keep_start</item>
 	</string-array>
-	<string-array name="track_sources">
+	<string-array name="track_sources" translatable="false">
 		<item>@string/favourites</item>
 		<item>@string/history</item>
 	</string-array>
-	<string-array name="list_modes">
+	<string-array name="list_modes" translatable="false">
 		<item>@string/list</item>
 		<item>@string/detailed_list</item>
 		<item>@string/grid</item>
 	</string-array>
-	<string-array name="screenshots_policy">
+	<string-array name="screenshots_policy" translatable="false">
 		<item>@string/screenshots_allow</item>
 		<item>@string/screenshots_block_nsfw</item>
 		<item>@string/screenshots_block_all</item>
 	</string-array>
-	<string-array name="network_policy">
+	<string-array name="network_policy" translatable="false">
 		<item>@string/always</item>
 		<item>@string/only_using_wifi</item>
 		<item>@string/never</item>
 	</string-array>
-	<string-array name="doh_providers">
+	<string-array name="doh_providers" translatable="false">
 		<item>@string/disabled</item>
 		<item>Google</item>
 		<item>CloudFlare</item>
 		<item>AdGuard</item>
 	</string-array>
-	<string-array name="reader_modes">
+	<string-array name="reader_modes" translatable="false">
 		<item>@string/standard</item>
 		<item>@string/right_to_left</item>
 		<item>@string/webtoon</item>
 	</string-array>
-	<string-array name="scrobbling_statuses">
+	<string-array name="scrobbling_statuses" translatable="false">
 		<item>@string/status_planned</item>
 		<item>@string/status_reading</item>
 		<item>@string/status_re_reading</item>
@@ -53,25 +53,32 @@
 		<item>@string/status_on_hold</item>
 		<item>@string/status_dropped</item>
 	</string-array>
-	<string-array name="proxy_types">
+	<string-array name="proxy_types" translatable="false">
 		<item>@string/disabled</item>
 		<item>HTTP</item>
 		<item>SOCKS (v4/v5)</item>
 	</string-array>
-	<string-array name="reader_backgrounds">
+	<string-array name="reader_backgrounds" translatable="false">
 		<item>@string/system_default</item>
 		<item>@string/color_light</item>
 		<item>@string/color_dark</item>
 		<item>@string/color_white</item>
 		<item>@string/color_black</item>
 	</string-array>
-	<string-array name="reader_animation">
+	<string-array name="reader_animation" translatable="false">
 		<item>@string/disabled</item>
 		<item>@string/system_default</item>
 		<item>@string/advanced</item>
 	</string-array>
-	<string-array name="first_nav_item">
+	<string-array name="first_nav_item" translatable="false">
 		<item>@string/history</item>
 		<item>@string/favourites</item>
 	</string-array>
+	<string-array name="backup_frequency" translatable="false">
+		<item>@string/frequency_every_day</item>
+		<item>@string/frequency_every_2_days</item>
+		<item>@string/frequency_once_per_week</item>
+		<item>@string/frequency_twice_per_month</item>
+		<item>@string/frequency_once_per_month</item>
+	</string-array>
 </resources>

app/src/main/res/values/constants.xml

@@ -64,4 +64,11 @@
 		<item>0</item>
 		<item>1</item>
 	</string-array>
+	<string-array name="values_backup_frequency" translatable="false">
+		<item>1</item>
+		<item>2</item>
+		<item>7</item>
+		<item>14</item>
+		<item>30</item>
+	</string-array>
 </resources>

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

@@ -500,4 +500,14 @@
 	<string name="by_relevance">Relevance</string>
 	<string name="categories">Categories</string>
 	<string name="online_variant">Online variant</string>
+	<string name="periodic_backups">Periodic backups</string>
+	<string name="backup_frequency">Backup creation frequency</string>
+	<string name="frequency_every_day">Every day</string>
+	<string name="frequency_every_2_days">Every 2 days</string>
+	<string name="frequency_once_per_week">Once per week</string>
+	<string name="frequency_twice_per_month">Twice per month</string>
+	<string name="frequency_once_per_month">Once per month</string>
+	<string name="periodic_backups_enable">Enable periodic backups</string>
+	<string name="backups_output_directory">Backups output directory</string>
+	<string name="last_successful_backup">Last successful backup: %s</string>
 </resources>

app/src/main/res/xml/pref_backup_periodic.xml

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.preference.PreferenceScreen
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:app="http://schemas.android.com/apk/res-auto">
+
+	<SwitchPreferenceCompat
+		android:defaultValue="false"
+		android:key="backup_periodic"
+		android:layout="@layout/preference_toggle_header"
+		android:title="@string/periodic_backups_enable" />
+
+	<ListPreference
+		android:defaultValue="7"
+		android:dependency="backup_periodic"
+		android:entries="@array/backup_frequency"
+		android:entryValues="@array/values_backup_frequency"
+		android:key="backup_periodic_freq"
+		android:title="@string/backup_frequency"
+		app:useSimpleSummaryProvider="true" />
+
+	<Preference
+		android:dependency="backup_periodic"
+		android:key="backup_periodic_output"
+		android:title="@string/backups_output_directory" />
+
+	<Preference
+		android:dependency="backup_periodic"
+		android:icon="@drawable/ic_info_outline"
+		android:key="backup_periodic_last"
+		android:persistent="false"
+		android:selectable="false"
+		app:allowDividerAbove="true"
+		app:isPreferenceVisible="false" />
+
+</androidx.preference.PreferenceScreen>

app/src/main/res/xml/pref_user_data.xml

@@ -34,6 +34,12 @@
 			android:summary="@string/restore_summary"
 			android:title="@string/restore_backup" />
 
+		<Preference
+			android:fragment="org.koitharu.kotatsu.settings.backup.PeriodicalBackupSettingsFragment"
+			android:key="backup_periodic"
+			android:persistent="false"
+			android:title="@string/periodic_backups" />
+
 	</PreferenceCategory>
 
 	<PreferenceCategory android:title="@string/storage_usage">