Local manga source filter

app/src/main/kotlin/org/koitharu/kotatsu/filter/ui/FilterFieldLayout.kt

@@ -97,7 +97,7 @@ class FilterFieldLayout @JvmOverloads constructor(
 			label,
 			context.getThemeColorStateList(materialR.attr.colorControlNormal),
 		)
-		addView(errorView)
+		addView(label)
 		errorView = label
 		return label
 	}

app/src/main/kotlin/org/koitharu/kotatsu/filter/ui/tags/TagsCatalogAdapter.kt

@@ -11,6 +11,7 @@ import org.koitharu.kotatsu.filter.ui.model.TagCatalogItem
 import org.koitharu.kotatsu.list.ui.ListModelDiffCallback
 import org.koitharu.kotatsu.list.ui.adapter.ListItemType
 import org.koitharu.kotatsu.list.ui.adapter.errorFooterAD
+import org.koitharu.kotatsu.list.ui.adapter.errorStateListAD
 import org.koitharu.kotatsu.list.ui.adapter.loadingFooterAD
 import org.koitharu.kotatsu.list.ui.adapter.loadingStateAD
 import org.koitharu.kotatsu.list.ui.model.ListModel
@@ -24,6 +25,7 @@ class TagsCatalogAdapter(
 		addDelegate(ListItemType.STATE_LOADING, loadingStateAD())
 		addDelegate(ListItemType.FOOTER_LOADING, loadingFooterAD())
 		addDelegate(ListItemType.FOOTER_ERROR, errorFooterAD(null))
+		addDelegate(ListItemType.STATE_ERROR, errorStateListAD(null))
 	}
 
 	override fun getSectionText(context: Context, position: Int): CharSequence? {

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

@@ -11,20 +11,22 @@ import org.koitharu.kotatsu.list.ui.model.ErrorState
 import org.koitharu.kotatsu.list.ui.model.ListModel
 
 fun errorStateListAD(
-	listener: ListStateHolderListener,
+	listener: ListStateHolderListener?,
 ) = adapterDelegateViewBinding<ErrorState, ListModel, ItemErrorStateBinding>(
 	{ inflater, parent -> ItemErrorStateBinding.inflate(inflater, parent, false) },
 ) {
 
-	val onClickListener = View.OnClickListener { v ->
-		when (v.id) {
-			R.id.button_retry -> listener.onRetryClick(item.exception)
-			R.id.button_secondary -> listener.onSecondaryErrorActionClick(item.exception)
+	if (listener != null) {
+		val onClickListener = View.OnClickListener { v ->
+			when (v.id) {
+				R.id.button_retry -> listener.onRetryClick(item.exception)
+				R.id.button_secondary -> listener.onSecondaryErrorActionClick(item.exception)
+			}
 		}
-	}
 
-	binding.buttonRetry.setOnClickListener(onClickListener)
-	binding.buttonSecondary.setOnClickListener(onClickListener)
+		binding.buttonRetry.setOnClickListener(onClickListener)
+		binding.buttonSecondary.setOnClickListener(onClickListener)
+	}
 
 	bind {
 		with(binding.textViewError) {
@@ -32,7 +34,7 @@ fun errorStateListAD(
 			setCompoundDrawablesWithIntrinsicBounds(0, item.icon, 0, 0)
 		}
 		with(binding.buttonRetry) {
-			isVisible = item.canRetry
+			isVisible = item.canRetry && listener != null
 			setText(item.buttonText)
 		}
 		binding.buttonSecondary.setTextAndVisible(item.secondaryButtonText)

app/src/main/kotlin/org/koitharu/kotatsu/local/data/LocalMangaRepository.kt

@@ -25,13 +25,16 @@ import org.koitharu.kotatsu.local.data.output.LocalMangaOutput
 import org.koitharu.kotatsu.local.data.output.LocalMangaUtil
 import org.koitharu.kotatsu.local.domain.MangaLock
 import org.koitharu.kotatsu.local.domain.model.LocalManga
+import org.koitharu.kotatsu.parsers.model.ContentRating
 import org.koitharu.kotatsu.parsers.model.Manga
 import org.koitharu.kotatsu.parsers.model.MangaChapter
 import org.koitharu.kotatsu.parsers.model.MangaListFilter
 import org.koitharu.kotatsu.parsers.model.MangaListFilterCapabilities
 import org.koitharu.kotatsu.parsers.model.MangaListFilterOptions
 import org.koitharu.kotatsu.parsers.model.MangaPage
+import org.koitharu.kotatsu.parsers.model.MangaTag
 import org.koitharu.kotatsu.parsers.model.SortOrder
+import org.koitharu.kotatsu.parsers.util.mapToSet
 import org.koitharu.kotatsu.parsers.util.runCatchingCancellable
 import java.io.File
 import java.util.EnumSet
@@ -67,7 +70,14 @@ class LocalMangaRepository @Inject constructor(
 			settings.localListOrder = value
 		}
 
-	override suspend fun getFilterOptions() = MangaListFilterOptions()
+	override suspend fun getFilterOptions() = MangaListFilterOptions(
+		availableTags = localMangaIndex.getAvailableTags().mapToSet { MangaTag(title = it, key = it, source = source) },
+		availableContentRating = if (!settings.isNsfwContentDisabled) {
+			EnumSet.of(ContentRating.SAFE, ContentRating.ADULT)
+		} else {
+			emptySet()
+		},
+	)
 
 	override suspend fun getList(offset: Int, order: SortOrder?, filter: MangaListFilter?): List<Manga> {
 		if (offset > 0) {
@@ -75,7 +85,7 @@ class LocalMangaRepository @Inject constructor(
 		}
 		val list = getRawList()
 		if (settings.isNsfwContentDisabled) {
-			list.removeIf { it.manga.isNsfw }
+			list.removeAll { it.manga.isNsfw }
 		}
 		if (filter != null) {
 			val query = filter.query
@@ -83,10 +93,14 @@ class LocalMangaRepository @Inject constructor(
 				list.retainAll { x -> x.isMatchesQuery(query) }
 			}
 			if (filter.tags.isNotEmpty()) {
-				list.retainAll { x -> x.containsTags(filter.tags) }
+				list.retainAll { x -> x.containsTags(filter.tags.mapToSet { it.title }) }
 			}
 			if (filter.tagsExclude.isNotEmpty()) {
-				list.removeAll { x -> x.containsAnyTag(filter.tags) }
+				list.removeAll { x -> x.containsAnyTag(filter.tagsExclude.mapToSet { it.title }) }
+			}
+			filter.contentRating.singleOrNull()?.let { contentRating ->
+				val isNsfw = contentRating == ContentRating.ADULT
+				list.retainAll { it.manga.isNsfw == isNsfw }
 			}
 		}
 		when (order) {

app/src/main/kotlin/org/koitharu/kotatsu/local/data/index/LocalMangaIndex.kt

@@ -16,6 +16,7 @@ import org.koitharu.kotatsu.local.data.LocalMangaRepository
 import org.koitharu.kotatsu.local.data.LocalStorageManager
 import org.koitharu.kotatsu.local.data.input.LocalMangaInput
 import org.koitharu.kotatsu.local.domain.model.LocalManga
+import org.koitharu.kotatsu.parsers.model.MangaTag
 import org.koitharu.kotatsu.parsers.util.runCatchingCancellable
 import java.io.File
 import javax.inject.Inject
@@ -85,6 +86,10 @@ class LocalMangaIndex @Inject constructor(
 		db.getLocalMangaIndexDao().delete(mangaId)
 	}
 
+	suspend fun getAvailableTags(): List<String> {
+		return db.getLocalMangaIndexDao().findTags()
+	}
+
 	private fun LocalManga.toEntity() = LocalMangaIndexEntity(
 		mangaId = manga.id,
 		path = file.path,

app/src/main/kotlin/org/koitharu/kotatsu/local/data/index/LocalMangaIndexDao.kt

@@ -3,7 +3,6 @@ package org.koitharu.kotatsu.local.data.index
 import androidx.room.Dao
 import androidx.room.Query
 import androidx.room.Upsert
-import org.koitharu.kotatsu.core.db.entity.TagEntity
 
 @Dao
 interface LocalMangaIndexDao {
@@ -11,6 +10,9 @@ interface LocalMangaIndexDao {
 	@Query("SELECT path FROM local_index WHERE manga_id = :mangaId")
 	suspend fun findPath(mangaId: Long): String?
 
+	@Query("SELECT title FROM local_index LEFT JOIN manga_tags ON manga_tags.manga_id = local_index.manga_id LEFT JOIN tags ON tags.tag_id = manga_tags.tag_id WHERE title IS NOT NULL GROUP BY title")
+	suspend fun findTags(): List<String>
+
 	@Upsert
 	suspend fun upsert(entity: LocalMangaIndexEntity)
 

app/src/main/kotlin/org/koitharu/kotatsu/local/domain/model/LocalManga.kt

@@ -23,17 +23,20 @@ data class LocalManga(
 
 	fun isMatchesQuery(query: String): Boolean {
 		return manga.title.contains(query, ignoreCase = true) ||
-			manga.altTitle?.contains(query, ignoreCase = true) == true
+			manga.altTitle?.contains(query, ignoreCase = true) == true ||
+			manga.author?.contains(query, ignoreCase = true) == true
 	}
 
-	fun containsTags(tags: Set<MangaTag>): Boolean {
-		return manga.tags.containsAll(tags)
+	fun containsTags(tags: Collection<String>): Boolean {
+		return tags.all { tag -> tag in manga.tags }
 	}
 
-	fun containsAnyTag(tags: Set<MangaTag>): Boolean {
-		return tags.any { tag ->
-			manga.tags.contains(tag)
-		}
+	fun containsAnyTag(tags: Collection<String>): Boolean {
+		return tags.any { tag -> tag in manga.tags }
+	}
+
+	private operator fun Collection<MangaTag>.contains(title: String): Boolean {
+		return any { it.title.equals(title, ignoreCase = true) }
 	}
 
 	override fun toString(): String {