Refactor quick filter implementation

.idea/gradle.xml

@@ -4,6 +4,7 @@
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
+        <option name="testRunner" value="CHOOSE_PER_TEST" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
         <option name="gradleJvm" value="#GRADLE_LOCAL_JAVA_HOME" />
         <option name="modules">

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

@@ -10,6 +10,7 @@ import androidx.sqlite.db.SimpleSQLiteQuery
 import androidx.sqlite.db.SupportSQLiteQuery
 import kotlinx.coroutines.flow.Flow
 import org.koitharu.kotatsu.core.db.entity.TagEntity
+import org.koitharu.kotatsu.core.db.entity.toEntity
 import org.koitharu.kotatsu.list.domain.ListFilterOption
 import org.koitharu.kotatsu.list.domain.ListSortOrder
 
@@ -51,9 +52,19 @@ abstract class HistoryDao {
 				"SELECT * FROM history LEFT JOIN manga ON history.manga_id = manga.manga_id " +
 					"WHERE history.deleted_at = 0",
 			)
-			for (option in filterOptions) {
+			val groupedOptions = filterOptions.groupBy { it.groupKey }
+			for ((_, group) in groupedOptions) {
+				if (group.isEmpty()) {
+					continue
+				}
 				append(" AND ")
-				append(option.getCondition())
+				if (group.size > 1) {
+					group.joinTo(this, separator = " OR ", prefix = "(", postfix = ")") {
+						it.getCondition()
+					}
+				} else {
+					append(group.single().getCondition())
+				}
 			}
 			append(" GROUP BY history.manga_id ORDER BY ")
 			append(orderBy)
@@ -159,9 +170,11 @@ abstract class HistoryDao {
 	protected abstract fun observeAllImpl(query: SupportSQLiteQuery): Flow<List<HistoryWithManga>>
 
 	private fun ListFilterOption.getCondition(): String = when (this) {
-		ListFilterOption.NEW_CHAPTERS -> "(SELECT chapters_new FROM tracks WHERE tracks.manga_id = history.manga_id) > 0"
-		ListFilterOption.FAVORITE -> "EXISTS(SELECT * FROM favourites WHERE history.manga_id = favourites.manga_id)"
-		ListFilterOption.COMPLETED -> "percent >= 0.9999"
-		ListFilterOption.DOWNLOADED -> throw IllegalArgumentException("Unsupported option $this")
+		ListFilterOption.Downloaded -> throw IllegalArgumentException("Unsupported option $this")
+		is ListFilterOption.Favorite -> "EXISTS(SELECT * FROM favourites WHERE history.manga_id = favourites.manga_id AND category_id = ${category.id})"
+		ListFilterOption.Macro.COMPLETED -> "percent >= 0.9999"
+		ListFilterOption.Macro.NEW_CHAPTERS -> "(SELECT chapters_new FROM tracks WHERE tracks.manga_id = history.manga_id) > 0"
+		ListFilterOption.Macro.FAVORITE -> "EXISTS(SELECT * FROM favourites WHERE history.manga_id = favourites.manga_id)"
+		is ListFilterOption.Tag -> "EXISTS(SELECT * FROM manga_tags WHERE history.manga_id = manga_tags.manga_id AND tag_id = ${tag.toEntity().id})"
 	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/history/domain/HistoryListQuickFilter.kt

@@ -0,0 +1,25 @@
+package org.koitharu.kotatsu.history.domain
+
+import org.koitharu.kotatsu.core.prefs.AppSettings
+import org.koitharu.kotatsu.history.data.HistoryRepository
+import org.koitharu.kotatsu.list.domain.ListFilterOption
+import org.koitharu.kotatsu.list.domain.MangaListQuickFilter
+import javax.inject.Inject
+
+class HistoryListQuickFilter @Inject constructor(
+	private val settings: AppSettings,
+	private val repository: HistoryRepository,
+) : MangaListQuickFilter() {
+
+	override suspend fun getAvailableFilterOptions(): List<ListFilterOption> = buildList {
+		add(ListFilterOption.Downloaded)
+		if (settings.isTrackerEnabled) {
+			add(ListFilterOption.Macro.NEW_CHAPTERS)
+		}
+		add(ListFilterOption.Macro.COMPLETED)
+		add(ListFilterOption.Macro.FAVORITE)
+		repository.getPopularTags(3).mapTo(this) {
+			ListFilterOption.Tag(it)
+		}
+	}
+}

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

@@ -16,7 +16,6 @@ import org.koitharu.kotatsu.core.ui.util.MenuInvalidator
 import org.koitharu.kotatsu.core.util.ext.addMenuProvider
 import org.koitharu.kotatsu.core.util.ext.observe
 import org.koitharu.kotatsu.databinding.FragmentListBinding
-import org.koitharu.kotatsu.list.domain.ListFilterOption
 import org.koitharu.kotatsu.list.ui.MangaListFragment
 import org.koitharu.kotatsu.list.ui.size.DynamicItemSizeResolver
 
@@ -35,10 +34,6 @@ class HistoryListFragment : MangaListFragment() {
 
 	override fun onScrolledToEnd() = viewModel.requestMoreItems()
 
-	override fun onFilterOptionClick(option: ListFilterOption) {
-		viewModel.onFilterOptionClick(option)
-	}
-
 	override fun onEmptyActionClick() {
 		startActivity(NetworkManageIntent())
 	}

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

@@ -3,6 +3,9 @@ package org.koitharu.kotatsu.history.ui
 import androidx.lifecycle.viewModelScope
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.async
+import kotlinx.coroutines.awaitAll
+import kotlinx.coroutines.coroutineScope
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
@@ -21,31 +24,30 @@ import org.koitharu.kotatsu.core.prefs.ListMode
 import org.koitharu.kotatsu.core.prefs.observeAsFlow
 import org.koitharu.kotatsu.core.prefs.observeAsStateFlow
 import org.koitharu.kotatsu.core.ui.util.ReversibleAction
-import org.koitharu.kotatsu.core.ui.widgets.ChipsView
 import org.koitharu.kotatsu.core.util.ext.calculateTimeAgo
 import org.koitharu.kotatsu.core.util.ext.call
 import org.koitharu.kotatsu.core.util.ext.combine
 import org.koitharu.kotatsu.core.util.ext.onFirst
 import org.koitharu.kotatsu.download.ui.worker.DownloadWorker
 import org.koitharu.kotatsu.history.data.HistoryRepository
+import org.koitharu.kotatsu.history.domain.HistoryListQuickFilter
 import org.koitharu.kotatsu.history.domain.MarkAsReadUseCase
 import org.koitharu.kotatsu.history.domain.model.MangaWithHistory
 import org.koitharu.kotatsu.list.domain.ListFilterOption
 import org.koitharu.kotatsu.list.domain.ListSortOrder
 import org.koitharu.kotatsu.list.domain.MangaListMapper
+import org.koitharu.kotatsu.list.domain.QuickFilterListener
 import org.koitharu.kotatsu.list.ui.MangaListViewModel
 import org.koitharu.kotatsu.list.ui.model.EmptyHint
 import org.koitharu.kotatsu.list.ui.model.EmptyState
 import org.koitharu.kotatsu.list.ui.model.ListHeader
 import org.koitharu.kotatsu.list.ui.model.ListModel
 import org.koitharu.kotatsu.list.ui.model.LoadingState
-import org.koitharu.kotatsu.list.ui.model.QuickFilter
 import org.koitharu.kotatsu.list.ui.model.TipModel
 import org.koitharu.kotatsu.list.ui.model.toErrorState
 import org.koitharu.kotatsu.local.data.LocalMangaRepository
 import org.koitharu.kotatsu.parsers.model.Manga
 import java.time.Instant
-import java.util.EnumSet
 import java.util.concurrent.atomic.AtomicBoolean
 import javax.inject.Inject
 
@@ -58,9 +60,10 @@ class HistoryListViewModel @Inject constructor(
 	private val mangaListMapper: MangaListMapper,
 	private val localMangaRepository: LocalMangaRepository,
 	private val markAsReadUseCase: MarkAsReadUseCase,
+	private val quickFilter: HistoryListQuickFilter,
 	networkState: NetworkState,
 	downloadScheduler: DownloadWorker.Scheduler,
-) : MangaListViewModel(settings, downloadScheduler) {
+) : MangaListViewModel(settings, downloadScheduler), QuickFilterListener by quickFilter {
 
 	private val sortOrder: StateFlow<ListSortOrder> = settings.observeAsStateFlow(
 		scope = viewModelScope + Dispatchers.IO,
@@ -68,8 +71,6 @@ class HistoryListViewModel @Inject constructor(
 		valueProducer = { historySortOrder },
 	)
 
-	private val filterOptions = MutableStateFlow<Set<ListFilterOption>>(EnumSet.noneOf(ListFilterOption::class.java))
-
 	override val listMode = settings.observeAsStateFlow(
 		scope = viewModelScope + Dispatchers.Default,
 		key = AppSettings.KEY_LIST_MODE_HISTORY,
@@ -93,7 +94,7 @@ class HistoryListViewModel @Inject constructor(
 	)
 
 	override val content = combine(
-		filterOptions,
+		quickFilter.appliedOptions,
 		observeHistory(),
 		isGroupingEnabled,
 		observeListModeWithTriggers(),
@@ -105,7 +106,7 @@ class HistoryListViewModel @Inject constructor(
 				if (filters.isEmpty()) {
 					listOf(getEmptyState(hasFilters = false))
 				} else {
-					listOf(filterItem(filters), getEmptyState(hasFilters = true))
+					listOf(quickFilter.filterItem(filters), getEmptyState(hasFilters = true))
 				}
 			}
 
@@ -118,8 +119,8 @@ class HistoryListViewModel @Inject constructor(
 		loadingCounter.increment()
 	}.onFirst {
 		loadingCounter.decrement()
-	}.catch {
-		emit(listOf(it.toErrorState(canRetry = false)))
+	}.catch { e ->
+		emit(listOf(e.toErrorState(canRetry = false)))
 	}.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, listOf(LoadingState))
 
 	override fun onRefresh() = Unit
@@ -161,29 +162,24 @@ class HistoryListViewModel @Inject constructor(
 		}
 	}
 
-	fun onFilterOptionClick(option: ListFilterOption) {
-		filterOptions.value = EnumSet.copyOf(filterOptions.value).also {
-			if (option in it) {
-				it.remove(option)
-			} else {
-				it.add(option)
-			}
-		}
-	}
-
-	private fun observeHistory() = combine(sortOrder, filterOptions, limit, ::Triple)
-		.flatMapLatest { repository.observeAllWithHistory(it.first, it.second - ListFilterOption.DOWNLOADED, it.third) }
+	private fun observeHistory() = combine(sortOrder, quickFilter.appliedOptions, limit, ::Triple)
+		.flatMapLatest { repository.observeAllWithHistory(it.first, it.second - ListFilterOption.Downloaded, it.third) }
 
 	private suspend fun mapList(
 		filters: Set<ListFilterOption>,
-		list: List<MangaWithHistory>,
+		historyList: List<MangaWithHistory>,
 		grouped: Boolean,
 		mode: ListMode,
 		isOnline: Boolean,
 		isIncognito: Boolean,
 	): List<ListModel> {
+		val list = if (!isOnline || ListFilterOption.Downloaded in filters) {
+			historyList.mapToLocal()
+		} else {
+			historyList
+		}
 		val result = ArrayList<ListModel>((if (grouped) (list.size * 1.4).toInt() else list.size) + 3)
-		result += filterItem(filters)
+		result += quickFilter.filterItem(filters)
 		if (isIncognito) {
 			result += TipModel(
 				key = AppSettings.KEY_INCOGNITO_MODE,
@@ -205,12 +201,7 @@ class HistoryListViewModel @Inject constructor(
 			)
 		}
 		var isEmpty = true
-		for ((m, history) in list) {
-			val manga = if ((!isOnline && !m.isLocal) || ListFilterOption.DOWNLOADED in filters) {
-				localMangaRepository.findSavedManga(m)?.manga ?: continue
-			} else {
-				m
-			}
+		for ((manga, history) in list) {
 			isEmpty = false
 			if (grouped) {
 				val header = history.header(order)
@@ -229,6 +220,20 @@ class HistoryListViewModel @Inject constructor(
 		return result
 	}
 
+	private suspend fun List<MangaWithHistory>.mapToLocal() = coroutineScope {
+		map {
+			async {
+				if (it.manga.isLocal) {
+					it
+				} else {
+					localMangaRepository.findSavedManga(it.manga)?.let { localManga ->
+						MangaWithHistory(localManga.manga, it.history)
+					}
+				}
+			}
+		}.awaitAll().filterNotNull()
+	}
+
 	private fun MangaHistory.header(order: ListSortOrder): ListHeader? = when (order) {
 		ListSortOrder.LAST_READ,
 		ListSortOrder.LONG_AGO_READ -> ListHeader(calculateTimeAgo(updatedAt))
@@ -254,18 +259,6 @@ class HistoryListViewModel @Inject constructor(
 		ListSortOrder.RATING -> null
 	}
 
-	private fun filterItem(selected: Set<ListFilterOption>) = QuickFilter(
-		items = ListFilterOption.HISTORY.map { option ->
-			ChipsView.ChipModel(
-				titleResId = option.titleResId,
-				icon = option.iconResId,
-				isCheckable = true,
-				isChecked = option in selected,
-				data = option,
-			)
-		},
-	)
-
 	private fun getEmptyState(hasFilters: Boolean) = if (hasFilters) {
 		EmptyState(
 			icon = R.drawable.ic_empty_history,

app/src/main/kotlin/org/koitharu/kotatsu/list/domain/ListFilterOption.kt

@@ -3,26 +3,84 @@ package org.koitharu.kotatsu.list.domain
 import androidx.annotation.DrawableRes
 import androidx.annotation.StringRes
 import org.koitharu.kotatsu.R
-import java.util.EnumSet
+import org.koitharu.kotatsu.core.model.FavouriteCategory
+import org.koitharu.kotatsu.parsers.model.MangaTag
 
-enum class ListFilterOption(
-	@StringRes val titleResId: Int,
-	@DrawableRes val iconResId: Int,
-) {
+sealed interface ListFilterOption {
 
-	DOWNLOADED(R.string.on_device, R.drawable.ic_storage),
-	COMPLETED(R.string.status_completed, R.drawable.ic_state_finished),
-	NEW_CHAPTERS(R.string.new_chapters, R.drawable.ic_updated),
-	FAVORITE(R.string.favourites, R.drawable.ic_heart_outline),
-	;
+	@get:StringRes
+	val titleResId: Int
 
-	companion object {
+	@get:DrawableRes
+	val iconResId: Int
 
-		val HISTORY: Set<ListFilterOption> = EnumSet.of(
-			DOWNLOADED,
-			NEW_CHAPTERS,
-			FAVORITE,
-			COMPLETED,
-		)
+	val titleText: CharSequence?
+
+	val groupKey: String
+
+	data object Downloaded : ListFilterOption {
+
+		override val titleResId: Int
+			get() = R.string.on_device
+
+		override val iconResId: Int
+			get() = R.drawable.ic_storage
+
+		override val titleText: CharSequence?
+			get() = null
+
+		override val groupKey: String
+			get() = "_downloaded"
+	}
+
+	enum class Macro(
+		@StringRes override val titleResId: Int,
+		@DrawableRes override val iconResId: Int,
+	) : ListFilterOption {
+
+		COMPLETED(R.string.status_completed, R.drawable.ic_state_finished),
+		NEW_CHAPTERS(R.string.new_chapters, R.drawable.ic_updated),
+		FAVORITE(R.string.favourites, R.drawable.ic_heart_outline),
+		;
+
+		override val titleText: CharSequence?
+			get() = null
+
+		override val groupKey: String
+			get() = name
+	}
+
+	data class Tag(
+		val tag: MangaTag
+	) : ListFilterOption {
+
+		override val titleResId: Int
+			get() = 0
+
+		override val iconResId: Int
+			get() = R.drawable.ic_tag
+
+		override val titleText: String
+			get() = tag.title
+
+		override val groupKey: String
+			get() = "_tag"
+	}
+
+	data class Favorite(
+		val category: FavouriteCategory
+	) : ListFilterOption {
+
+		override val titleResId: Int
+			get() = 0
+
+		override val iconResId: Int
+			get() = R.drawable.ic_heart_outline
+
+		override val titleText: String
+			get() = category.title
+
+		override val groupKey: String
+			get() = "_favcat"
 	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/list/domain/MangaListQuickFilter.kt

@@ -0,0 +1,50 @@
+package org.koitharu.kotatsu.list.domain
+
+import androidx.collection.ArraySet
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import org.koitharu.kotatsu.core.ui.widgets.ChipsView
+import org.koitharu.kotatsu.list.ui.model.QuickFilter
+import org.koitharu.kotatsu.parsers.util.SuspendLazy
+
+abstract class MangaListQuickFilter : QuickFilterListener {
+
+	private val appliedFilter = MutableStateFlow<Set<ListFilterOption>>(emptySet())
+	private val availableFilterOptions = SuspendLazy {
+		getAvailableFilterOptions()
+	}
+
+	val appliedOptions
+		get() = appliedFilter.asStateFlow()
+
+	override fun toggleFilterOption(option: ListFilterOption) {
+		appliedFilter.value = ArraySet(appliedFilter.value).also {
+			if (option in it) {
+				it.remove(option)
+			} else {
+				it.add(option)
+			}
+		}
+	}
+
+	override fun clearFilter() {
+		appliedFilter.value = emptySet()
+	}
+
+	suspend fun filterItem(
+		selectedOptions: Set<ListFilterOption>,
+	) = QuickFilter(
+		items = availableFilterOptions.tryGet().getOrNull()?.map { option ->
+			ChipsView.ChipModel(
+				title = option.titleText,
+				titleResId = option.titleResId,
+				icon = option.iconResId,
+				isCheckable = true,
+				isChecked = option in selectedOptions,
+				data = option,
+			)
+		}.orEmpty(),
+	)
+
+	protected abstract suspend fun getAvailableFilterOptions(): List<ListFilterOption>
+}

app/src/main/kotlin/org/koitharu/kotatsu/list/domain/QuickFilterListener.kt

@@ -0,0 +1,8 @@
+package org.koitharu.kotatsu.list.domain
+
+interface QuickFilterListener {
+
+	fun toggleFilterOption(option: ListFilterOption)
+
+	fun clearFilter()
+}

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

@@ -45,6 +45,7 @@ import org.koitharu.kotatsu.details.ui.DetailsActivity
 import org.koitharu.kotatsu.download.ui.worker.DownloadStartedObserver
 import org.koitharu.kotatsu.favourites.ui.categories.select.FavoriteSheet
 import org.koitharu.kotatsu.list.domain.ListFilterOption
+import org.koitharu.kotatsu.list.domain.QuickFilterListener
 import org.koitharu.kotatsu.list.ui.adapter.ListItemType
 import org.koitharu.kotatsu.list.ui.adapter.MangaListAdapter
 import org.koitharu.kotatsu.list.ui.adapter.MangaListListener
@@ -227,7 +228,9 @@ abstract class MangaListFragment :
 		}
 	}
 
-	override fun onFilterOptionClick(option: ListFilterOption) = Unit
+	override fun onFilterOptionClick(option: ListFilterOption) {
+		(viewModel as? QuickFilterListener)?.toggleFilterOption(option)
+	}
 
 	override fun onFilterClick(view: View?) = Unit
 

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

@@ -65,7 +65,7 @@ abstract class MangaListViewModel(
 		listMode,
 		settings.observe().filter { key ->
 			key == AppSettings.KEY_PROGRESS_INDICATORS || key == AppSettings.KEY_TRACKER_ENABLED
-		}.onStart { emit("") }
+		}.onStart { emit("") },
 	) { mode, _ ->
 		mode
 	}

app/src/main/res/drawable/ic_tag.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	android:width="24dp"
+	android:height="24dp"
+	android:tint="?attr/colorControlNormal"
+	android:viewportWidth="24"
+	android:viewportHeight="24">
+	<path
+		android:fillColor="#000000"
+		android:pathData="M21.41 11.58L12.41 2.58A2 2 0 0 0 11 2H4A2 2 0 0 0 2 4V11A2 2 0 0 0 2.59 12.42L11.59 21.42A2 2 0 0 0 13 22A2 2 0 0 0 14.41 21.41L21.41 14.41A2 2 0 0 0 22 13A2 2 0 0 0 21.41 11.58M13 20L4 11V4H11L20 13M6.5 5A1.5 1.5 0 1 1 5 6.5A1.5 1.5 0 0 1 6.5 5Z" />
+</vector>