Show chapters list in downloads

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

@@ -128,6 +128,10 @@ class RemoteMangaRepository(
 		return details.await()
 	}
 
+	suspend fun peekDetails(manga: Manga): Manga? {
+		return cache.getDetails(source, manga.url)
+	}
+
 	suspend fun find(manga: Manga): Manga? {
 		val list = getList(0, manga.title)
 		return list.find { x -> x.id == manga.id }

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

@@ -19,6 +19,7 @@ data class DownloadState(
 	val eta: Long = -1L,
 	val localManga: LocalManga? = null,
 	val downloadedChapters: LongArray = LongArray(0),
+	val scheduledChapters: LongArray = LongArray(0),
 	val timestamp: Long = System.currentTimeMillis(),
 ) {
 
@@ -42,6 +43,7 @@ data class DownloadState(
 		.putLong(DATA_TIMESTAMP, timestamp)
 		.putString(DATA_ERROR, error)
 		.putLongArray(DATA_CHAPTERS, downloadedChapters)
+		.putLongArray(DATA_CHAPTERS_SRC, scheduledChapters)
 		.putBoolean(DATA_INDETERMINATE, isIndeterminate)
 		.putBoolean(DATA_PAUSED, isPaused)
 		.build()
@@ -64,10 +66,13 @@ data class DownloadState(
 		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
-		return percent == other.percent
+		if (percent != other.percent) return false
+
+		return true
 	}
 
 	override fun hashCode(): Int {
@@ -83,6 +88,7 @@ data class DownloadState(
 		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
@@ -90,12 +96,14 @@ data class DownloadState(
 		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_ETA = "eta"
 		private const val DATA_TIMESTAMP = "timestamp"
 		private const val DATA_ERROR = "error"
@@ -119,5 +127,7 @@ 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)
 	}
 }

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

@@ -1,18 +1,26 @@
 package org.koitharu.kotatsu.download.ui.list
 
 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 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.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.adapter.ListItemType
 import org.koitharu.kotatsu.list.ui.model.ListModel
 import org.koitharu.kotatsu.parsers.util.format
 
@@ -25,6 +33,9 @@ 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 clickListener = object : View.OnClickListener, View.OnLongClickListener {
 		override fun onClick(v: View) {
@@ -45,6 +56,8 @@ 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 ->
 		binding.textViewTitle.text = item.manga.title
@@ -57,6 +70,10 @@ fun downloadItemAD(
 			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
 		when (item.workState) {
 			WorkInfo.State.ENQUEUED,
 			WorkInfo.State.BLOCKED -> {

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

@@ -2,6 +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 org.koitharu.kotatsu.list.ui.model.ListModel
 import org.koitharu.kotatsu.parsers.model.Manga
 import java.util.Date
@@ -19,6 +20,8 @@ data class DownloadItemModel(
 	val progress: Int,
 	val eta: Long,
 	val timestamp: Date,
+	val chapters: List<DownloadChapter>,
+	val isExpanded: Boolean,
 ) : ListModel, Comparable<DownloadItemModel> {
 
 	val percent: Float
@@ -33,6 +36,9 @@ data class DownloadItemModel(
 	val canResume: Boolean
 		get() = workState == WorkInfo.State.RUNNING && isPaused
 
+	val isExpandable: Boolean
+		get() = chapters.isNotEmpty()
+
 	fun getEtaString(): CharSequence? = if (hasEta) {
 		DateUtils.getRelativeTimeSpanString(
 			eta,

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

@@ -82,7 +82,11 @@ class DownloadsActivity : BaseActivity<ActivityDownloadsBinding>(),
 		if (selectionController.onItemClick(item.id.mostSignificantBits)) {
 			return
 		}
-		startActivity(DetailsActivity.newIntent(view.context, item.manga))
+		if (item.isExpandable) {
+			viewModel.expandCollapse(item)
+		} else {
+			startActivity(DetailsActivity.newIntent(view.context, item.manga))
+		}
 	}
 
 	override fun onItemLongClick(item: DownloadItemModel, view: View): Boolean {

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

@@ -8,15 +8,19 @@ import androidx.work.Data
 import androidx.work.WorkInfo
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.SharingStarted
+import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.flow.map
-import kotlinx.coroutines.flow.mapLatest
 import kotlinx.coroutines.flow.stateIn
+import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.plus
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.parser.MangaDataRepository
+import org.koitharu.kotatsu.core.parser.MangaRepository
+import org.koitharu.kotatsu.core.parser.RemoteMangaRepository
 import org.koitharu.kotatsu.core.ui.BaseViewModel
 import org.koitharu.kotatsu.core.ui.model.DateTimeAgo
 import org.koitharu.kotatsu.core.ui.util.ReversibleAction
@@ -24,6 +28,7 @@ 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
@@ -31,6 +36,7 @@ import org.koitharu.kotatsu.list.ui.model.ListModel
 import org.koitharu.kotatsu.list.ui.model.LoadingState
 import org.koitharu.kotatsu.parsers.model.Manga
 import org.koitharu.kotatsu.parsers.util.mapToSet
+import org.koitharu.kotatsu.parsers.util.runCatchingCancellable
 import java.util.Date
 import java.util.LinkedList
 import java.util.UUID
@@ -41,13 +47,18 @@ import javax.inject.Inject
 class DownloadsViewModel @Inject constructor(
 	private val workScheduler: DownloadWorker.Scheduler,
 	private val mangaDataRepository: MangaDataRepository,
+	private val mangaRepositoryFactory: MangaRepository.Factory,
 ) : BaseViewModel() {
 
 	private val mangaCache = LongSparseArray<Manga>()
 	private val cacheMutex = Mutex()
-	private val works = workScheduler.observeWorks()
-		.mapLatest { it.toDownloadsList() }
-		.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, null)
+	private val expanded = MutableStateFlow(emptySet<UUID>())
+	private val works = combine(
+		workScheduler.observeWorks(),
+		expanded,
+	) { list, exp ->
+		list.toDownloadsList(exp)
+	}.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, null)
 
 	val onActionDone = MutableEventFlow<ReversibleAction>()
 
@@ -169,11 +180,21 @@ class DownloadsViewModel @Inject constructor(
 		it.id.mostSignificantBits
 	} ?: emptySet()
 
-	private suspend fun List<WorkInfo>.toDownloadsList(): List<DownloadItemModel> {
+	fun expandCollapse(item: DownloadItemModel) {
+		expanded.update {
+			if (item.id in it) {
+				it - item.id
+			} else {
+				it + item.id
+			}
+		}
+	}
+
+	private suspend fun List<WorkInfo>.toDownloadsList(exp: Set<UUID>): List<DownloadItemModel> {
 		if (isEmpty()) {
 			return emptyList()
 		}
-		val list = mapNotNullTo(ArrayList(size)) { it.toUiModel() }
+		val list = mapNotNullTo(ArrayList(size)) { it.toUiModel(it.id in exp) }
 		list.sortByDescending { it.timestamp }
 		return list
 	}
@@ -213,11 +234,13 @@ class DownloadsViewModel @Inject constructor(
 		return destination
 	}
 
-	private suspend fun WorkInfo.toUiModel(): DownloadItemModel? {
+	private suspend fun WorkInfo.toUiModel(isExpanded: Boolean): DownloadItemModel? {
 		val workData = if (outputData == Data.EMPTY) progress else outputData
 		val mangaId = DownloadState.getMangaId(workData)
 		if (mangaId == 0L) return null
 		val manga = getManga(mangaId) ?: return null
+		val downloadedChapters = DownloadState.getDownloadedChapters(workData)
+		val scheduledChapters = DownloadState.getScheduledChapters(workData).toSet()
 		return DownloadItemModel(
 			id = id,
 			workState = state,
@@ -229,7 +252,19 @@ class DownloadsViewModel @Inject constructor(
 			progress = DownloadState.getProgress(workData),
 			eta = DownloadState.getEta(workData),
 			timestamp = DownloadState.getTimestamp(workData),
-			totalChapters = DownloadState.getDownloadedChapters(workData).size,
+			totalChapters = downloadedChapters.size,
+			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(),
 		)
 	}
 
@@ -261,8 +296,16 @@ class DownloadsViewModel @Inject constructor(
 		}
 		return cacheMutex.withLock {
 			mangaCache.getOrElse(mangaId) {
-				mangaDataRepository.findMangaById(mangaId)?.also { mangaCache[mangaId] = it } ?: return null
+				mangaDataRepository.findMangaById(mangaId)?.let {
+					tryLoad(it) ?: it
+				}?.also {
+					mangaCache[mangaId] = it
+				} ?: return null
 			}
 		}
 	}
+
+	private suspend fun tryLoad(manga: Manga) = runCatchingCancellable {
+		(mangaRepositoryFactory.create(manga.source) as RemoteMangaRepository).peekDetails(manga)
+	}.getOrNull()
 }

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

@@ -0,0 +1,14 @@
+package org.koitharu.kotatsu.download.ui.list.chapters
+
+import org.koitharu.kotatsu.list.ui.model.ListModel
+
+data class DownloadChapter(
+	val number: Int,
+	val name: String,
+	val isDownloaded: Boolean,
+) : ListModel {
+
+	override fun areItemsTheSame(other: ListModel): Boolean {
+		return other is DownloadChapter && other.name == name
+	}
+}

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

@@ -0,0 +1,20 @@
+package org.koitharu.kotatsu.download.ui.list.chapters
+
+import androidx.core.content.ContextCompat
+import com.hannesdorfmann.adapterdelegates4.dsl.adapterDelegateViewBinding
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.util.ext.drawableEnd
+import org.koitharu.kotatsu.databinding.ItemChapterDownloadBinding
+
+fun downloadChapterAD() = adapterDelegateViewBinding<DownloadChapter, DownloadChapter, ItemChapterDownloadBinding>(
+	{ layoutInflater, parent -> ItemChapterDownloadBinding.inflate(layoutInflater, parent, false) },
+) {
+
+	val iconDone = ContextCompat.getDrawable(context, R.drawable.ic_check)
+
+	bind {
+		binding.textViewNumber.text = item.number.toString()
+		binding.textViewTitle.text = item.name
+		binding.textViewTitle.drawableEnd = if (item.isDownloaded) iconDone else null
+	}
+}

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

@@ -178,6 +178,9 @@ 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(

app/src/main/kotlin/org/koitharu/kotatsu/list/ui/adapter/ListItemType.kt

@@ -26,4 +26,5 @@ enum class ListItemType {
 	CATEGORY_LARGE,
 	MANGA_SCROBBLING,
 	NAV_ITEM,
+	CHAPTER,
 }

app/src/main/kotlin/org/koitharu/kotatsu/list/ui/adapter/TypedListSpacingDecoration.kt

@@ -59,6 +59,7 @@ class TypedListSpacingDecoration(
 			ListItemType.MANGA_NESTED_GROUP,
 			ListItemType.CATEGORY_LARGE,
 			ListItemType.NAV_ITEM,
+			ListItemType.CHAPTER,
 			null,
 			-> outRect.set(0)
 
@@ -77,6 +78,6 @@ class TypedListSpacingDecoration(
 	private fun Rect.set(spacing: Int) = set(spacing, spacing, spacing, spacing)
 
 	private fun ListItemType?.isEdgeToEdge() = this == ListItemType.MANGA_NESTED_GROUP
-			|| this == ListItemType.FILTER_SORT
-			|| this == ListItemType.FILTER_TAG
+		|| this == ListItemType.FILTER_SORT
+		|| this == ListItemType.FILTER_TAG
 }

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

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:app="http://schemas.android.com/apk/res-auto"
+	xmlns:tools="http://schemas.android.com/tools"
+	android:layout_width="match_parent"
+	android:layout_height="wrap_content"
+	android:baselineAligned="false"
+	android:gravity="center_vertical"
+	android:orientation="horizontal"
+	android:paddingVertical="4dp">
+
+	<TextView
+		android:id="@+id/textView_number"
+		android:layout_width="24dp"
+		android:layout_height="24dp"
+		android:layout_marginStart="?android:listPreferredItemPaddingStart"
+		android:background="@drawable/bg_badge_default"
+		android:ellipsize="none"
+		android:gravity="center"
+		android:singleLine="true"
+		android:textAlignment="center"
+		android:textColor="?attr/colorOnPrimary"
+		android:textSize="12sp"
+		tools:text="13" />
+
+	<TextView
+		android:id="@+id/textView_title"
+		android:layout_width="match_parent"
+		android:layout_height="wrap_content"
+		android:layout_marginStart="?android:listPreferredItemPaddingStart"
+		android:layout_marginEnd="?android:listPreferredItemPaddingEnd"
+		android:drawablePadding="4dp"
+		android:ellipsize="end"
+		android:gravity="center_vertical"
+		android:singleLine="true"
+		android:textAppearance="?attr/textAppearanceBodySmall"
+		app:drawableTint="?colorControlNormal"
+		tools:drawableEnd="@drawable/ic_check"
+		tools:text="@tools:sample/lorem[15]" />
+
+</LinearLayout>

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

@@ -24,7 +24,7 @@
 			app:shapeAppearanceOverlay="@style/ShapeAppearanceOverlay.Kotatsu.Cover.Medium"
 			tools:src="@tools:sample/backgrounds/scenic" />
 
-		<TextView
+		<CheckedTextView
 			android:id="@+id/textView_title"
 			android:layout_width="0dp"
 			android:layout_height="wrap_content"
@@ -32,11 +32,14 @@
 			android:layout_marginTop="12dp"
 			android:layout_marginEnd="12dp"
 			android:ellipsize="end"
+			android:gravity="center_vertical"
 			android:singleLine="true"
 			android:textAppearance="?attr/textAppearanceTitleSmall"
+			app:drawableTint="?android:colorControlNormal"
 			app:layout_constraintEnd_toEndOf="parent"
 			app:layout_constraintStart_toEndOf="@id/imageView_cover"
 			app:layout_constraintTop_toTopOf="parent"
+			tools:drawableEndCompat="@drawable/ic_expand_collapse"
 			tools:text="@tools:sample/lorem" />
 
 		<androidx.constraintlayout.widget.Barrier
@@ -100,6 +103,25 @@
 			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="wrap_content"
+			android:layout_marginHorizontal="12dp"
+			android:layout_marginTop="12dp"
+			app:layout_constraintEnd_toEndOf="parent"
+			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="wrap_content"
+				app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager" />
+
+		</com.google.android.material.card.MaterialCardView>
+
 		<Button
 			android:id="@+id/button_pause"
 			style="?materialButtonOutlinedStyle"
@@ -110,7 +132,7 @@
 			android:text="@string/pause"
 			android:visibility="gone"
 			app:layout_constraintEnd_toStartOf="@id/button_resume"
-			app:layout_constraintTop_toBottomOf="@id/progressBar"
+			app:layout_constraintTop_toBottomOf="@id/card_details"
 			tools:visibility="visible" />
 
 		<Button
@@ -123,7 +145,7 @@
 			android:text="@string/resume"
 			android:visibility="gone"
 			app:layout_constraintEnd_toStartOf="@id/button_cancel"
-			app:layout_constraintTop_toBottomOf="@id/progressBar" />
+			app:layout_constraintTop_toBottomOf="@id/card_details" />
 
 		<Button
 			android:id="@+id/button_cancel"
@@ -135,7 +157,7 @@
 			android:text="@android:string/cancel"
 			android:visibility="gone"
 			app:layout_constraintEnd_toEndOf="parent"
-			app:layout_constraintTop_toBottomOf="@id/progressBar"
+			app:layout_constraintTop_toBottomOf="@id/card_details"
 			tools:visibility="visible" />
 
 	</androidx.constraintlayout.widget.ConstraintLayout>