Show genres tab for TV & Movies (#16)

Adds a tab to the TV Show & Movie screens which displays the genres in that library as a grid. You can select the genre to see the items in that library for the genre. This PR also adds backend changes for further filtering to implement #13.
2026-07-08 23:51:21 +02:00 · 2025-10-16 16:49:40 -04:00 · 2025-10-16 16:49:40 -04:00 · 0e195c18d7
commit 0e195c18d7
parent 6a896cf600
13 changed files with 330 additions and 57 deletions
--- a/app/src/main/java/com/github/damontecres/wholphin/data/model/GetItemsFilter.kt
+++ b/app/src/main/java/com/github/damontecres/wholphin/data/model/GetItemsFilter.kt
@ -0,0 +1,31 @@
+@file:UseSerializers(UuidSerializer::class)
+
+package com.github.damontecres.wholphin.data.model
+
+import com.github.damontecres.wholphin.util.UuidSerializer
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.UseSerializers
+import org.jellyfin.sdk.model.api.request.GetItemsRequest
+import java.util.UUID
+
+@Serializable
+data class GetItemsFilter(
+    val favorite: Boolean? = null,
+    val genres: List<UUID>? = null,
+    val minCriticRating: Double? = null,
+    val persons: List<UUID>? = null,
+    val played: Boolean? = null,
+    val studios: List<UUID>? = null,
+    val tags: List<String>? = null,
+) {
+    fun applyTo(req: GetItemsRequest) =
+        req.copy(
+            isFavorite = favorite,
+            genreIds = genres,
+            minCriticRating = minCriticRating,
+            personIds = persons,
+            isPlayed = played,
+            studioIds = studios,
+            tags = tags,
+        )
+}
--- a/app/src/main/java/com/github/damontecres/wholphin/ui/Extensions.kt
+++ b/app/src/main/java/com/github/damontecres/wholphin/ui/Extensions.kt
@ -13,6 +13,7 @@ import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableIntStateOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.saveable.rememberSaveable
@ -313,6 +314,12 @@ fun rememberPosition(initialPosition: RowColumn = RowColumn(-1, -1)) =
        )
    }

+/**
+ * Convenient way to [rememberSaveable] a Int
+ */
+@Composable
+fun rememberInt(initial: Int = 0) = rememberSaveable { mutableIntStateOf(initial) }
+
 /**
 * Show a [Toast]. Ensures it runs on the main thread.
 */
--- a/app/src/main/java/com/github/damontecres/wholphin/ui/cards/GridCard.kt
+++ b/app/src/main/java/com/github/damontecres/wholphin/ui/cards/GridCard.kt
@ -38,6 +38,7 @@ fun GridCard(
    onLongClick: () -> Unit,
    modifier: Modifier = Modifier,
    interactionSource: MutableInteractionSource = remember { MutableInteractionSource() },
+    imageAspectRatio: Float = 2f / 3f,
 ) {
    val dto = item?.data
    val focused by interactionSource.collectIsFocusedAsState()
@ -86,7 +87,7 @@ fun GridCard(
                modifier =
                    Modifier
                        .fillMaxWidth()
-                        .aspectRatio(2f / 3f) // TODO
+                        .aspectRatio(imageAspectRatio)
                        .background(MaterialTheme.colorScheme.surfaceVariant),
            )
        }
--- a/app/src/main/java/com/github/damontecres/wholphin/ui/cards/SeasonCard.kt
+++ b/app/src/main/java/com/github/damontecres/wholphin/ui/cards/SeasonCard.kt
@ -42,6 +42,7 @@ fun SeasonCard(
    imageWidth: Dp = Dp.Unspecified,
    interactionSource: MutableInteractionSource = remember { MutableInteractionSource() },
    showImageOverlay: Boolean = false,
+    aspectRatio: Float = item?.data?.primaryImageAspectRatio?.toFloat() ?: (2f / 3f),
 ) {
    val dto = item?.data
    val focused by interactionSource.collectIsFocusedAsState()
@ -62,7 +63,7 @@ fun SeasonCard(
    } else {
        focusedAfterDelay = false
    }
-    val aspectRatio = dto?.primaryImageAspectRatio?.toFloat() ?: (2f / 3f)
+//    val aspectRatio = dto?.primaryImageAspectRatio?.toFloat() ?: (2f / 3f)
    val width = imageHeight * aspectRatio
    val height = imageWidth * (1f / aspectRatio)
    Column(
--- a/app/src/main/java/com/github/damontecres/wholphin/ui/components/CollectionFolderGrid.kt
+++ b/app/src/main/java/com/github/damontecres/wholphin/ui/components/CollectionFolderGrid.kt
@ -27,6 +27,7 @@ import androidx.lifecycle.viewModelScope
 import androidx.tv.material3.MaterialTheme
 import androidx.tv.material3.Text
 import com.github.damontecres.wholphin.data.model.BaseItem
+import com.github.damontecres.wholphin.data.model.GetItemsFilter
 import com.github.damontecres.wholphin.preferences.UserPreferences
 import com.github.damontecres.wholphin.ui.DefaultItemFields
 import com.github.damontecres.wholphin.ui.OneTimeLaunchedEffect
@ -36,7 +37,6 @@ import com.github.damontecres.wholphin.ui.data.SortAndDirection
 import com.github.damontecres.wholphin.ui.data.VideoSortOptions
 import com.github.damontecres.wholphin.ui.detail.CardGrid
 import com.github.damontecres.wholphin.ui.detail.ItemViewModel
-import com.github.damontecres.wholphin.ui.nav.Destination
 import com.github.damontecres.wholphin.ui.tryRequestFocus
 import com.github.damontecres.wholphin.util.ApiRequestPager
 import com.github.damontecres.wholphin.util.GetItemsRequestHandler
@ -66,12 +66,14 @@ class CollectionFolderViewModel
        val loading = MutableLiveData<LoadingState>(LoadingState.Loading)
        val pager = MutableLiveData<List<BaseItem?>>(listOf())
        val sortAndDirection = MutableLiveData<SortAndDirection>()
+        val filter = MutableLiveData<GetItemsFilter>(GetItemsFilter())

        fun init(
            itemId: UUID,
            potential: BaseItem?,
            sortAndDirection: SortAndDirection,
            recursive: Boolean,
+            filter: GetItemsFilter,
        ): Job =
            viewModelScope.launch(
                LoadingExceptionHandler(
@ -80,12 +82,13 @@ class CollectionFolderViewModel
                ) + Dispatchers.IO,
            ) {
                fetchItem(itemId, potential)
-                loadResults(sortAndDirection, recursive)
+                loadResults(sortAndDirection, recursive, filter)
            }

        fun loadResults(
            sortAndDirection: SortAndDirection,
            recursive: Boolean,
+            filter: GetItemsFilter,
        ) {
            item.value?.let { item ->
                viewModelScope.launch(Dispatchers.IO) {
@ -93,6 +96,7 @@ class CollectionFolderViewModel
                        pager.value = listOf()
                        loading.value = LoadingState.Loading
                        this@CollectionFolderViewModel.sortAndDirection.value = sortAndDirection
+                        this@CollectionFolderViewModel.filter.value = filter
                    }
                    val includeItemTypes =
                        when (item.data.collectionType) {
@ -112,25 +116,27 @@ class CollectionFolderViewModel
                            else -> listOf()
                        }
                    val request =
-                        GetItemsRequest(
-                            parentId = item.id,
-                            enableImageTypes = listOf(ImageType.PRIMARY, ImageType.THUMB),
-                            includeItemTypes = includeItemTypes,
-                            recursive = recursive,
-                            excludeItemIds = listOf(item.id),
-                            sortBy =
-                                listOf(
-                                    sortAndDirection.sort,
-                                    ItemSortBy.SORT_NAME,
-                                    ItemSortBy.PRODUCTION_YEAR,
-                                ),
-                            sortOrder =
-                                listOf(
-                                    sortAndDirection.direction,
-                                    SortOrder.ASCENDING,
-                                    SortOrder.ASCENDING,
-                                ),
-                            fields = DefaultItemFields,
+                        filter.applyTo(
+                            GetItemsRequest(
+                                parentId = item.id,
+                                enableImageTypes = listOf(ImageType.PRIMARY, ImageType.THUMB),
+                                includeItemTypes = includeItemTypes,
+                                recursive = recursive,
+                                excludeItemIds = listOf(item.id),
+                                sortBy =
+                                    listOf(
+                                        sortAndDirection.sort,
+                                        ItemSortBy.SORT_NAME,
+                                        ItemSortBy.PRODUCTION_YEAR,
+                                    ),
+                                sortOrder =
+                                    listOf(
+                                        sortAndDirection.direction,
+                                        SortOrder.ASCENDING,
+                                        SortOrder.ASCENDING,
+                                    ),
+                                fields = DefaultItemFields,
+                            ),
                        )
                    val newPager =
                        ApiRequestPager(
@ -182,7 +188,9 @@ class CollectionFolderViewModel
@Composable
 fun CollectionFolderGrid(
    preferences: UserPreferences,
-    destination: Destination.MediaItem,
+    itemId: UUID,
+    item: BaseItem?,
+    initialFilter: GetItemsFilter,
    recursive: Boolean,
    onClickItem: (BaseItem) -> Unit,
    modifier: Modifier = Modifier,
@ -196,9 +204,10 @@ fun CollectionFolderGrid(
    positionCallback: ((columns: Int, position: Int) -> Unit)? = null,
 ) {
    OneTimeLaunchedEffect {
-        viewModel.init(destination.itemId, destination.item, initialSortAndDirection, recursive)
+        viewModel.init(itemId, item, initialSortAndDirection, recursive, initialFilter)
    }
    val sortAndDirection by viewModel.sortAndDirection.observeAsState(initialSortAndDirection)
+    val filter by viewModel.filter.observeAsState(initialFilter)
    val loading by viewModel.loading.observeAsState(LoadingState.Loading)
    val item by viewModel.item.observeAsState()
    val pager by viewModel.pager.observeAsState()
@ -218,7 +227,7 @@ fun CollectionFolderGrid(
                    modifier = modifier,
                    onClickItem = onClickItem,
                    onSortChange = {
-                        viewModel.loadResults(it, recursive)
+                        viewModel.loadResults(it, recursive, filter)
                    },
                    showTitle = showTitle,
                    positionCallback = positionCallback,
--- a/app/src/main/java/com/github/damontecres/wholphin/ui/components/GenreCardGrid.kt
+++ b/app/src/main/java/com/github/damontecres/wholphin/ui/components/GenreCardGrid.kt
@ -0,0 +1,135 @@
+package com.github.damontecres.wholphin.ui.components
+
+import androidx.compose.foundation.focusable
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.livedata.observeAsState
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.focus.FocusRequester
+import androidx.hilt.lifecycle.viewmodel.compose.hiltViewModel
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.github.damontecres.wholphin.data.model.BaseItem
+import com.github.damontecres.wholphin.data.model.GetItemsFilter
+import com.github.damontecres.wholphin.ui.DefaultItemFields
+import com.github.damontecres.wholphin.ui.OneTimeLaunchedEffect
+import com.github.damontecres.wholphin.ui.cards.GridCard
+import com.github.damontecres.wholphin.ui.detail.CardGrid
+import com.github.damontecres.wholphin.ui.nav.Destination
+import com.github.damontecres.wholphin.ui.nav.NavigationManager
+import com.github.damontecres.wholphin.ui.tryRequestFocus
+import com.github.damontecres.wholphin.util.ApiRequestPager
+import com.github.damontecres.wholphin.util.GetGenresRequestHandler
+import com.github.damontecres.wholphin.util.LoadingExceptionHandler
+import com.github.damontecres.wholphin.util.LoadingState
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import org.jellyfin.sdk.api.client.ApiClient
+import org.jellyfin.sdk.model.api.request.GetGenresRequest
+import java.util.UUID
+import javax.inject.Inject
+
+@HiltViewModel
+class GenreViewModel
+    @Inject
+    constructor(
+        private val api: ApiClient,
+        val navigationManager: NavigationManager,
+    ) : ViewModel() {
+        private lateinit var itemId: UUID
+        val loading = MutableLiveData<LoadingState>(LoadingState.Pending)
+        val genres = MutableLiveData<List<BaseItem?>>(listOf())
+
+        fun init(itemId: UUID) {
+            loading.value = LoadingState.Loading
+            this.itemId = itemId
+            viewModelScope.launch(Dispatchers.IO + LoadingExceptionHandler(loading, "Failed to fetch genres")) {
+                val request =
+                    GetGenresRequest(
+                        parentId = itemId,
+                        fields = DefaultItemFields,
+                    )
+                val pager = ApiRequestPager(api, request, GetGenresRequestHandler, viewModelScope).init()
+                withContext(Dispatchers.Main) {
+                    genres.value = pager
+                    loading.value = LoadingState.Success
+                }
+            }
+        }
+
+        suspend fun positionOfLetter(letter: Char): Int {
+            val request =
+                GetGenresRequest(
+                    parentId = itemId,
+                    nameLessThan = letter.toString(),
+                    limit = 0,
+                    enableTotalRecordCount = true,
+                )
+            val result by GetGenresRequestHandler.execute(api, request)
+            return result.totalRecordCount
+        }
+    }
+
+@Composable
+fun GenreCardGrid(
+    itemId: UUID,
+    modifier: Modifier = Modifier,
+    viewModel: GenreViewModel = hiltViewModel(),
+) {
+    OneTimeLaunchedEffect {
+        viewModel.init(itemId)
+    }
+    val loading by viewModel.loading.observeAsState(LoadingState.Pending)
+    val genres by viewModel.genres.observeAsState(listOf())
+
+    val gridFocusRequester = remember { FocusRequester() }
+    when (val st = loading) {
+        LoadingState.Pending,
+        LoadingState.Loading,
+        -> LoadingPage(modifier.focusable())
+
+        is LoadingState.Error -> ErrorMessage(st, modifier.focusable())
+
+        LoadingState.Success ->
+            Box(modifier = modifier) {
+                LaunchedEffect(Unit) { gridFocusRequester.tryRequestFocus() }
+                CardGrid(
+                    pager = genres,
+                    onClickItem = { genre ->
+                        viewModel.navigationManager.navigateTo(
+                            Destination.FilteredCollection(
+                                itemId = itemId,
+                                filter = GetItemsFilter(genres = listOf(genre.id)),
+                                recursive = true,
+                            ),
+                        )
+                    },
+                    onLongClickItem = {},
+                    letterPosition = { viewModel.positionOfLetter(it) },
+                    gridFocusRequester = gridFocusRequester,
+                    showJumpButtons = false,
+                    showLetterButtons = true,
+                    modifier = Modifier.fillMaxSize(),
+                    initialPosition = 0,
+                    positionCallback = { columns, position ->
+                    },
+                    cardContent = { item: BaseItem?, onClick: () -> Unit, onLongClick: () -> Unit, mod: Modifier ->
+                        GridCard(
+                            item = item,
+                            onClick = onClick,
+                            onLongClick = onLongClick,
+                            modifier = mod,
+                            imageAspectRatio = 1f,
+                        )
+                    },
+                )
+            }
+    }
+}
--- a/app/src/main/java/com/github/damontecres/wholphin/ui/detail/CardGrid.kt
+++ b/app/src/main/java/com/github/damontecres/wholphin/ui/detail/CardGrid.kt
@ -77,6 +77,19 @@ fun CardGrid(
    modifier: Modifier = Modifier,
    initialPosition: Int = 0,
    positionCallback: ((columns: Int, position: Int) -> Unit)? = null,
+    cardContent: @Composable (
+        item: BaseItem?,
+        onClick: () -> Unit,
+        onLongClick: () -> Unit,
+        mod: Modifier,
+    ) -> Unit = { item, onClick, onLongClick, mod ->
+        GridCard(
+            item = item,
+            onClick = onClick,
+            onLongClick = onLongClick,
+            modifier = mod,
+        )
+    },
 ) {
    val startPosition = initialPosition.coerceIn(0, (pager.size - 1).coerceAtLeast(0))
    val columns = 6
@ -249,34 +262,33 @@ fun CardGrid(
                            Modifier
                        }
                    val item = pager[index]
-                    GridCard(
-                        item = item,
-                        onClick = {
+                    cardContent(
+                        item,
+                        {
                            if (item != null) {
                                focusedIndex = index
                                onClickItem.invoke(item)
                            }
                        },
-                        onLongClick = { if (item != null) onLongClickItem.invoke(item) },
-                        modifier =
-                            mod
-                                .ifElse(index == 0, Modifier.focusRequester(zeroFocus))
-                                .onFocusChanged { focusState ->
-                                    if (DEBUG) {
-                                        Timber.v(
-                                            "$index isFocused=${focusState.isFocused}",
-                                        )
-                                    }
-                                    if (focusState.isFocused) {
-                                        // Focused, so set that up
-                                        focusOn(index)
-                                        positionCallback?.invoke(columns, index)
-                                    } else if (focusedIndex == index) {
+                        { if (item != null) onLongClickItem.invoke(item) },
+                        mod
+                            .ifElse(index == 0, Modifier.focusRequester(zeroFocus))
+                            .onFocusChanged { focusState ->
+                                if (DEBUG) {
+                                    Timber.v(
+                                        "$index isFocused=${focusState.isFocused}",
+                                    )
+                                }
+                                if (focusState.isFocused) {
+                                    // Focused, so set that up
+                                    focusOn(index)
+                                    positionCallback?.invoke(columns, index)
+                                } else if (focusedIndex == index) {
 //                                        savedFocusedIndex = index
 //                                        // Was focused on this, so mark unfocused
 //                                        focusedIndex = -1
-                                    }
-                                },
+                                }
+                            },
                    )
                }
            }
--- a/app/src/main/java/com/github/damontecres/wholphin/ui/detail/CollectionFolderGeneric.kt
+++ b/app/src/main/java/com/github/damontecres/wholphin/ui/detail/CollectionFolderGeneric.kt
@ -9,24 +9,30 @@ import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
 import androidx.hilt.lifecycle.viewmodel.compose.hiltViewModel
+import com.github.damontecres.wholphin.data.model.BaseItem
+import com.github.damontecres.wholphin.data.model.GetItemsFilter
 import com.github.damontecres.wholphin.preferences.UserPreferences
 import com.github.damontecres.wholphin.ui.components.CollectionFolderGrid
-import com.github.damontecres.wholphin.ui.nav.Destination
 import com.github.damontecres.wholphin.ui.preferences.PreferencesViewModel
+import java.util.UUID

@Composable
 fun CollectionFolderGeneric(
    preferences: UserPreferences,
-    destination: Destination.MediaItem,
+    itemId: UUID,
+    item: BaseItem?,
    recursive: Boolean,
    modifier: Modifier = Modifier,
+    filter: GetItemsFilter = GetItemsFilter(),
    preferencesViewModel: PreferencesViewModel = hiltViewModel(),
 ) {
    var showHeader by remember { mutableStateOf(true) }
    CollectionFolderGrid(
        preferences = preferences,
        onClickItem = { preferencesViewModel.navigationManager.navigateTo(it.destination()) },
-        destination = destination,
+        itemId = itemId,
+        item = item,
+        initialFilter = filter,
        showTitle = showHeader,
        recursive = recursive,
        modifier =
--- a/app/src/main/java/com/github/damontecres/wholphin/ui/detail/CollectionFolderMovie.kt
+++ b/app/src/main/java/com/github/damontecres/wholphin/ui/detail/CollectionFolderMovie.kt
@ -30,10 +30,12 @@ import androidx.tv.material3.TabRow
 import androidx.tv.material3.TabRowDefaults
 import androidx.tv.material3.Text
 import com.github.damontecres.wholphin.data.model.BaseItem
+import com.github.damontecres.wholphin.data.model.GetItemsFilter
 import com.github.damontecres.wholphin.preferences.UserPreferences
 import com.github.damontecres.wholphin.preferences.rememberTab
 import com.github.damontecres.wholphin.ui.components.CollectionFolderGrid
 import com.github.damontecres.wholphin.ui.components.ErrorMessage
+import com.github.damontecres.wholphin.ui.components.GenreCardGrid
 import com.github.damontecres.wholphin.ui.components.RecommendedMovie
 import com.github.damontecres.wholphin.ui.ifElse
 import com.github.damontecres.wholphin.ui.nav.Destination
@ -55,7 +57,7 @@ fun CollectionFolderMovie(
            0
        }

-    val tabs = listOf("Recommended", "Library")
+    val tabs = listOf("Recommended", "Library", "Genres")
    var focusTabIndex by rememberSaveable { mutableIntStateOf(rememberedTabIndex) }
    var selectedTabIndex by rememberSaveable { mutableIntStateOf(rememberedTabIndex) }
    val focusRequester = remember { FocusRequester() }
@ -154,7 +156,9 @@ fun CollectionFolderMovie(
                CollectionFolderGrid(
                    preferences = preferences,
                    onClickItem = onClickItem,
-                    destination = destination,
+                    itemId = destination.itemId,
+                    item = destination.item,
+                    initialFilter = GetItemsFilter(),
                    showTitle = false,
                    recursive = true,
                    modifier =
@ -167,6 +171,16 @@ fun CollectionFolderMovie(
                    },
                )
            }
+            2 -> {
+                GenreCardGrid(
+                    itemId = destination.itemId,
+                    modifier =
+                        Modifier
+                            .padding(start = 16.dp)
+                            .fillMaxSize()
+                            .focusRequester(focusRequester),
+                )
+            }
            else -> ErrorMessage("Invalid tab index $selectedTabIndex", null)
        }
    }
--- a/app/src/main/java/com/github/damontecres/wholphin/ui/detail/CollectionFolderTv.kt
+++ b/app/src/main/java/com/github/damontecres/wholphin/ui/detail/CollectionFolderTv.kt
@ -30,10 +30,12 @@ import androidx.tv.material3.TabRow
 import androidx.tv.material3.TabRowDefaults
 import androidx.tv.material3.Text
 import com.github.damontecres.wholphin.data.model.BaseItem
+import com.github.damontecres.wholphin.data.model.GetItemsFilter
 import com.github.damontecres.wholphin.preferences.UserPreferences
 import com.github.damontecres.wholphin.preferences.rememberTab
 import com.github.damontecres.wholphin.ui.components.CollectionFolderGrid
 import com.github.damontecres.wholphin.ui.components.ErrorMessage
+import com.github.damontecres.wholphin.ui.components.GenreCardGrid
 import com.github.damontecres.wholphin.ui.components.RecommendedTvShow
 import com.github.damontecres.wholphin.ui.ifElse
 import com.github.damontecres.wholphin.ui.nav.Destination
@ -55,7 +57,7 @@ fun CollectionFolderTv(
            0
        }

-    val tabs = listOf("Recommended", "Library")
+    val tabs = listOf("Recommended", "Library", "Genres")
    var focusTabIndex by rememberSaveable { mutableIntStateOf(rememberedTabIndex) }
    var selectedTabIndex by rememberSaveable { mutableIntStateOf(rememberedTabIndex) }
    val focusRequester = remember { FocusRequester() }
@ -153,7 +155,9 @@ fun CollectionFolderTv(
            1 -> {
                CollectionFolderGrid(
                    preferences = preferences,
-                    destination = destination,
+                    itemId = destination.itemId,
+                    item = destination.item,
+                    initialFilter = GetItemsFilter(),
                    showTitle = false,
                    recursive = true,
                    modifier =
@ -167,6 +171,16 @@ fun CollectionFolderTv(
                    onClickItem = onClickItem,
                )
            }
+            2 -> {
+                GenreCardGrid(
+                    itemId = destination.itemId,
+                    modifier =
+                        Modifier
+                            .padding(start = 16.dp)
+                            .fillMaxSize()
+                            .focusRequester(focusRequester),
+                )
+            }
            else -> ErrorMessage("Invalid tab index $selectedTabIndex", null)
        }
    }
--- a/app/src/main/java/com/github/damontecres/wholphin/ui/nav/Destination.kt
+++ b/app/src/main/java/com/github/damontecres/wholphin/ui/nav/Destination.kt
@ -4,6 +4,7 @@ package com.github.damontecres.wholphin.ui.nav

 import androidx.navigation3.runtime.NavKey
 import com.github.damontecres.wholphin.data.model.BaseItem
+import com.github.damontecres.wholphin.data.model.GetItemsFilter
 import com.github.damontecres.wholphin.ui.detail.series.SeasonEpisode
 import com.github.damontecres.wholphin.ui.preferences.PreferenceScreenOption
 import com.github.damontecres.wholphin.util.UuidSerializer
@ -75,6 +76,13 @@ sealed class Destination(
        constructor(item: BaseItem) : this(item.id, item.resumeMs ?: 0, item)
    }

+    @Serializable
+    data class FilteredCollection(
+        val itemId: UUID,
+        val filter: GetItemsFilter,
+        val recursive: Boolean,
+    ) : Destination(false)
+
    @Serializable
    data object UpdateApp : Destination(true)

--- a/app/src/main/java/com/github/damontecres/wholphin/ui/nav/DestinationContent.kt
+++ b/app/src/main/java/com/github/damontecres/wholphin/ui/nav/DestinationContent.kt
@ -93,7 +93,8 @@ fun DestinationContent(
                BaseItemKind.BOX_SET ->
                    CollectionFolderGeneric(
                        preferences,
-                        destination,
+                        destination.itemId,
+                        destination.item,
                        false,
                        modifier,
                    )
@ -117,7 +118,8 @@ fun DestinationContent(
                        CollectionType.BOXSETS ->
                            CollectionFolderGeneric(
                                preferences,
-                                destination,
+                                destination.itemId,
+                                destination.item,
                                true,
                                modifier,
                            )
@ -125,7 +127,8 @@ fun DestinationContent(
                        else ->
                            CollectionFolderGeneric(
                                preferences,
-                                destination,
+                                destination.itemId,
+                                destination.item,
                                false,
                                modifier,
                            )
@ -141,7 +144,8 @@ fun DestinationContent(
                BaseItemKind.USER_VIEW ->
                    CollectionFolderGeneric(
                        preferences,
-                        destination,
+                        destination.itemId,
+                        destination.item,
                        true,
                        modifier,
                    )
@ -151,6 +155,16 @@ fun DestinationContent(
                }
            }

+        is Destination.FilteredCollection ->
+            CollectionFolderGeneric(
+                preferences = preferences,
+                itemId = destination.itemId,
+                item = null,
+                filter = destination.filter,
+                recursive = destination.recursive,
+                modifier = modifier,
+            )
+
        Destination.UpdateApp -> InstallUpdatePage(preferences, modifier)

        Destination.License -> LicenseInfo(modifier)
--- a/app/src/main/java/com/github/damontecres/wholphin/util/ApiRequestPager.kt
+++ b/app/src/main/java/com/github/damontecres/wholphin/util/ApiRequestPager.kt
@ -15,12 +15,14 @@ import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 import org.jellyfin.sdk.api.client.ApiClient
 import org.jellyfin.sdk.api.client.Response
+import org.jellyfin.sdk.api.client.extensions.genresApi
 import org.jellyfin.sdk.api.client.extensions.itemsApi
 import org.jellyfin.sdk.api.client.extensions.playlistsApi
 import org.jellyfin.sdk.api.client.extensions.suggestionsApi
 import org.jellyfin.sdk.api.client.extensions.tvShowsApi
 import org.jellyfin.sdk.model.api.BaseItemDtoQueryResult
 import org.jellyfin.sdk.model.api.request.GetEpisodesRequest
+import org.jellyfin.sdk.model.api.request.GetGenresRequest
 import org.jellyfin.sdk.model.api.request.GetItemsRequest
 import org.jellyfin.sdk.model.api.request.GetNextUpRequest
 import org.jellyfin.sdk.model.api.request.GetPlaylistItemsRequest
@ -292,3 +294,22 @@ val GetPlaylistItemsRequestHandler =
            request: GetPlaylistItemsRequest,
        ): Response<BaseItemDtoQueryResult> = api.playlistsApi.getPlaylistItems(request)
    }
+
+val GetGenresRequestHandler =
+    object : RequestHandler<GetGenresRequest> {
+        override fun prepare(
+            request: GetGenresRequest,
+            startIndex: Int,
+            limit: Int,
+            enableTotalRecordCount: Boolean,
+        ): GetGenresRequest =
+            request.copy(
+                startIndex = startIndex,
+                limit = limit,
+            )
+
+        override suspend fun execute(
+            api: ApiClient,
+            request: GetGenresRequest,
+        ): Response<BaseItemDtoQueryResult> = api.genresApi.getGenres(request)
+    }