Only show relevant parental ratings when filtering

app/src/main/java/com/github/damontecres/wholphin/services/FilterOptionCache.kt

@@ -0,0 +1,183 @@
+package com.github.damontecres.wholphin.services
+
+import android.content.Context
+import com.github.damontecres.wholphin.data.ServerRepository
+import com.github.damontecres.wholphin.data.filter.CommunityRatingFilter
+import com.github.damontecres.wholphin.data.filter.DecadeFilter
+import com.github.damontecres.wholphin.data.filter.FavoriteFilter
+import com.github.damontecres.wholphin.data.filter.FilterValueOption
+import com.github.damontecres.wholphin.data.filter.FilterVideoType
+import com.github.damontecres.wholphin.data.filter.GenreFilter
+import com.github.damontecres.wholphin.data.filter.ItemFilterBy
+import com.github.damontecres.wholphin.data.filter.OfficialRatingFilter
+import com.github.damontecres.wholphin.data.filter.PlayedFilter
+import com.github.damontecres.wholphin.data.filter.StudioFilter
+import com.github.damontecres.wholphin.data.filter.VideoTypeFilter
+import com.github.damontecres.wholphin.data.filter.YearFilter
+import com.github.damontecres.wholphin.services.hilt.IoCoroutineScope
+import com.github.damontecres.wholphin.ui.showToast
+import com.mayakapps.kache.InMemoryKache
+import dagger.hilt.android.qualifiers.ApplicationContext
+import kotlinx.coroutines.CancellationException
+import kotlinx.coroutines.CoroutineScope
+import org.jellyfin.sdk.api.client.ApiClient
+import org.jellyfin.sdk.api.client.extensions.filterApi
+import org.jellyfin.sdk.api.client.extensions.genresApi
+import org.jellyfin.sdk.api.client.extensions.localizationApi
+import org.jellyfin.sdk.api.client.extensions.studiosApi
+import org.jellyfin.sdk.api.client.extensions.yearsApi
+import org.jellyfin.sdk.model.UUID
+import org.jellyfin.sdk.model.api.BaseItemKind
+import org.jellyfin.sdk.model.api.ItemSortBy
+import org.jellyfin.sdk.model.api.SortOrder
+import timber.log.Timber
+import java.util.TreeSet
+import javax.inject.Inject
+import javax.inject.Singleton
+import kotlin.time.Duration.Companion.hours
+
+/**
+ * Get the possible values for filters in a library
+ */
+@Singleton
+class FilterOptionCache
+    @Inject
+    constructor(
+        @param:ApplicationContext private val context: Context,
+        @param:IoCoroutineScope private val ioCoroutineScope: CoroutineScope,
+        private val api: ApiClient,
+        private val serverRepository: ServerRepository,
+    ) {
+        private val cache =
+            InMemoryKache<FilterOptionCacheKey, List<FilterValueOption>>(16) {
+                creationScope = ioCoroutineScope
+                expireAfterWriteDuration = 1.hours
+            }
+
+        /**
+         * Gets the possible values for a filter
+         *
+         * For example, the possible genres in the parent ID
+         */
+        suspend fun getFilterOptionValues(
+            parentId: UUID?,
+            filterOption: ItemFilterBy<*>,
+        ): List<FilterValueOption> {
+            val cacheKey = FilterOptionCacheKey(serverRepository.currentUser?.id, parentId, filterOption)
+            return try {
+                cache
+                    .getOrPut(cacheKey) { (userId, parentId, filterOption) ->
+                        getFilterOptionValues(userId, parentId, filterOption)
+                    }.orEmpty()
+            } catch (ex: CancellationException) {
+                throw ex
+            } catch (ex: Exception) {
+                Timber.e(ex, "Error fetching options for %s", filterOption)
+                showToast(context, "Error occurred: ${ex.localizedMessage}")
+                emptyList()
+            }
+        }
+
+        private suspend fun getFilterOptionValues(
+            userId: UUID?,
+            parentId: UUID?,
+            filterOption: ItemFilterBy<*>,
+        ) = when (filterOption) {
+            GenreFilter -> {
+                api.genresApi
+                    .getGenres(
+                        parentId = parentId,
+                        userId = userId,
+                    ).content.items
+                    .map { FilterValueOption(it.name ?: "", it.id) }
+            }
+
+            StudioFilter -> {
+                api.studiosApi
+                    .getStudios(
+                        parentId = parentId,
+                        userId = userId,
+                        includeItemTypes = listOf(BaseItemKind.SERIES),
+                    ).content.items
+                    .map { FilterValueOption(it.name ?: "", it.id) }
+            }
+
+            FavoriteFilter,
+            PlayedFilter,
+            -> {
+                listOf(
+                    FilterValueOption("True", null),
+                    FilterValueOption("False", null),
+                )
+            }
+
+            OfficialRatingFilter -> {
+                val ratings =
+                    api.localizationApi
+                        .getParentalRatings()
+                        .content
+                        .associate {
+                            it.name to it.value
+                        }
+                api.filterApi
+                    .getQueryFiltersLegacy(
+                        parentId = parentId,
+                        userId = userId,
+                    ).content.officialRatings
+                    ?.mapNotNull { r ->
+                        val value = ratings[r]
+                        value?.let { FilterValueOption(r, value) }
+                    }?.sortedBy { it.value as Int }
+                    .orEmpty()
+            }
+
+            VideoTypeFilter -> {
+                FilterVideoType.entries.map {
+                    FilterValueOption(it.readable, it)
+                }
+            }
+
+            YearFilter -> {
+                api.yearsApi
+                    .getYears(
+                        parentId = parentId,
+                        userId = userId,
+                        sortBy = listOf(ItemSortBy.SORT_NAME),
+                        sortOrder = listOf(SortOrder.ASCENDING),
+                    ).content.items
+                    .mapNotNull {
+                        it.name?.toIntOrNull()?.let { FilterValueOption(it.toString(), it) }
+                    }
+            }
+
+            DecadeFilter -> {
+                val items = TreeSet<Int>()
+                api.yearsApi
+                    .getYears(
+                        parentId = parentId,
+                        userId = userId,
+                        sortBy = listOf(ItemSortBy.SORT_NAME),
+                        sortOrder = listOf(SortOrder.ASCENDING),
+                    ).content.items
+                    .mapNotNullTo(items) {
+                        it.name
+                            ?.toIntOrNull()
+                            ?.div(10)
+                            ?.times(10)
+                    }
+                items.toList().sorted().map { FilterValueOption("$it's", it) }
+            }
+
+            CommunityRatingFilter -> {
+                (1..10).map {
+                    FilterValueOption("$it", it)
+                }
+            }
+        }
+
+        private data class FilterOptionCacheKey(
+            val userId: UUID?,
+            val parentId: UUID?,
+            val filterOption: ItemFilterBy<*>,
+        )
+    }

app/src/main/java/com/github/damontecres/wholphin/ui/components/CollectionFolderView.kt

@@ -44,6 +44,7 @@ import com.github.damontecres.wholphin.preferences.AppPreferences
 import com.github.damontecres.wholphin.preferences.UserPreferences
 import com.github.damontecres.wholphin.services.BackdropService
 import com.github.damontecres.wholphin.services.FavoriteWatchManager
+import com.github.damontecres.wholphin.services.FilterOptionCache
 import com.github.damontecres.wholphin.services.MediaManagementService
 import com.github.damontecres.wholphin.services.MediaReportService
 import com.github.damontecres.wholphin.services.MusicService
@@ -63,7 +64,6 @@ import com.github.damontecres.wholphin.ui.rememberInt
 import com.github.damontecres.wholphin.ui.showToast
 import com.github.damontecres.wholphin.ui.toServerString
 import com.github.damontecres.wholphin.ui.tryRequestFocus
-import com.github.damontecres.wholphin.ui.util.FilterUtils
 import com.github.damontecres.wholphin.util.ApiRequestPager
 import com.github.damontecres.wholphin.util.DataLoadingState
 import com.github.damontecres.wholphin.util.ExceptionHandler
@@ -117,6 +117,7 @@ class CollectionFolderViewModel
         private val musicService: MusicService,
         val streamChoiceService: StreamChoiceService,
         val mediaReportService: MediaReportService,
+        private val filterOptionCache: FilterOptionCache,
         @Assisted val itemId: String,
         @Assisted initialSortAndDirection: SortAndDirection?,
         @Assisted("recursive") private val recursive: Boolean,
@@ -430,9 +431,7 @@ class CollectionFolderViewModel
         }
 
         suspend fun getFilterOptionValues(filterOption: ItemFilterBy<*>): List<FilterValueOption> =
-            FilterUtils.getFilterOptionValues(
-                api,
-                serverRepository.currentUser?.id,
+            filterOptionCache.getFilterOptionValues(
                 itemId.toUUID(),
                 filterOption,
             )

app/src/main/java/com/github/damontecres/wholphin/ui/detail/PlaylistDetails.kt

@@ -64,6 +64,7 @@ import com.github.damontecres.wholphin.data.model.LibraryDisplayInfo
 import com.github.damontecres.wholphin.preferences.UserPreferences
 import com.github.damontecres.wholphin.services.BackdropService
 import com.github.damontecres.wholphin.services.FavoriteWatchManager
+import com.github.damontecres.wholphin.services.FilterOptionCache
 import com.github.damontecres.wholphin.services.MediaManagementService
 import com.github.damontecres.wholphin.services.MediaReportService
 import com.github.damontecres.wholphin.services.MusicService
@@ -101,7 +102,6 @@ import com.github.damontecres.wholphin.ui.nav.Destination
 import com.github.damontecres.wholphin.ui.roundMinutes
 import com.github.damontecres.wholphin.ui.toServerString
 import com.github.damontecres.wholphin.ui.tryRequestFocus
-import com.github.damontecres.wholphin.ui.util.FilterUtils
 import com.github.damontecres.wholphin.ui.util.LocalClock
 import com.github.damontecres.wholphin.util.ApiRequestPager
 import com.github.damontecres.wholphin.util.ExceptionHandler
@@ -142,6 +142,7 @@ class PlaylistViewModel
         private val libraryDisplayInfoDao: LibraryDisplayInfoDao,
         private val favoriteWatchManager: FavoriteWatchManager,
         private val mediaReportService: MediaReportService,
+        private val filterOptionCache: FilterOptionCache,
         @Assisted itemId: UUID,
     ) : MusicViewModel(itemId, context, api, musicService, navigationManager, mediaManagementService) {
         @AssistedFactory
@@ -301,9 +302,7 @@ class PlaylistViewModel
         }
 
         suspend fun getFilterOptionValues(filterOption: ItemFilterBy<*>): List<FilterValueOption> =
-            FilterUtils.getFilterOptionValues(
-                api,
-                serverRepository.currentUser?.id,
+            filterOptionCache.getFilterOptionValues(
                 itemId,
                 filterOption,
             )

app/src/main/java/com/github/damontecres/wholphin/ui/detail/collection/CollectionViewModel.kt

@@ -14,6 +14,7 @@ import com.github.damontecres.wholphin.data.model.LibraryDisplayInfo
 import com.github.damontecres.wholphin.preferences.AppPreferences
 import com.github.damontecres.wholphin.services.BackdropService
 import com.github.damontecres.wholphin.services.FavoriteWatchManager
+import com.github.damontecres.wholphin.services.FilterOptionCache
 import com.github.damontecres.wholphin.services.ImageUrlService
 import com.github.damontecres.wholphin.services.KeyValueService
 import com.github.damontecres.wholphin.services.MediaManagementService
@@ -33,7 +34,6 @@ import com.github.damontecres.wholphin.ui.launchDefault
 import com.github.damontecres.wholphin.ui.launchIO
 import com.github.damontecres.wholphin.ui.nav.Destination
 import com.github.damontecres.wholphin.ui.toServerString
-import com.github.damontecres.wholphin.ui.util.FilterUtils
 import com.github.damontecres.wholphin.ui.util.ResStringProvider
 import com.github.damontecres.wholphin.util.ApiRequestPager
 import com.github.damontecres.wholphin.util.ExceptionHandler
@@ -90,6 +90,7 @@ class CollectionViewModel
         private val imageUrlService: ImageUrlService,
         private val musicService: MusicService,
         val mediaReportService: MediaReportService,
+        private val filterOptionCache: FilterOptionCache,
         @Assisted private val itemId: UUID,
     ) : ViewModel() {
         @AssistedFactory
@@ -352,9 +353,7 @@ class CollectionViewModel
         }
 
         suspend fun getPossibleFilterValues(filterOption: ItemFilterBy<*>): List<FilterValueOption> =
-            FilterUtils.getFilterOptionValues(
-                api,
-                serverRepository.currentUser?.id,
+            filterOptionCache.getFilterOptionValues(
                 itemId,
                 filterOption,
             )