feat: integrate dynamic library navigation in TV drawer

Refactors the TV navigation drawer to use specific library routes instead
of a static libraries overview. Added a `NavDisplay` with a backstack to
manage navigation between the Home screen and individual Library screens
directly from the drawer.

- Replace `TvDrawerDestination` enum with `Route` in the navigation drawer
- Dynamically populate drawer items based on available libraries
- Add `NavDisplay` to `TvAppScreen` for nested TV navigation
- Connect `TvLibraryScreen` to `AppViewModel` for media selection handling
- Remove back button from `TvLibraryScreen` in favor of drawer navigation
- Update `TvNavigationDrawerTest` to reflect routing changes

app-tv/src/androidTest/java/hu/bbara/purefin/ui/screen/home/components/TvNavigationDrawerTest.kt

@@ -24,9 +24,12 @@ import androidx.compose.ui.test.performKeyInput
 import androidx.compose.ui.test.performSemanticsAction
 import androidx.compose.ui.test.pressKey
 import androidx.compose.ui.unit.dp
+import hu.bbara.purefin.navigation.LibraryDto
+import hu.bbara.purefin.navigation.Route
 import hu.bbara.purefin.ui.theme.AppTheme
 import org.junit.Rule
 import org.junit.Test
+import java.util.UUID
 
 @OptIn(ExperimentalTestApi::class)
 class TvNavigationDrawerTest {
@@ -56,20 +59,26 @@ class TvNavigationDrawerTest {
 
     @Test
     fun tvNavigationDrawer_updatesSelectedDestination() {
-        var selectedDestination by mutableStateOf(TvDrawerDestination.HOME)
+        val libraryRoute = Route.LibraryRoute(
+            library = LibraryDto(
+                id = UUID.fromString("22222222-2222-2222-2222-222222222222"),
+                name = "Movies"
+            )
+        )
+        var selectedDestination by mutableStateOf<Route>(Route.Home)
 
         composeRule.setContent {
             AppTheme {
                 TvNavigationDrawer(
                     destinations = listOf(
                         TvDrawerDestinationItem(
-                            destination = TvDrawerDestination.HOME,
+                            destination = Route.Home,
                             label = "Home",
                             icon = Icons.Outlined.Home
                         ),
                         TvDrawerDestinationItem(
-                            destination = TvDrawerDestination.LIBRARIES,
+                            destination = libraryRoute,
-                            label = "Libraries",
+                            label = "Movies",
                             icon = Icons.Outlined.Collections
                         )
                     ),

app-tv/src/main/java/hu/bbara/purefin/navigation/TvRouteEntryBuilder.kt

@@ -1,6 +1,8 @@
 package hu.bbara.purefin.navigation
 
+import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.navigation3.runtime.EntryProviderScope
+import hu.bbara.purefin.feature.browse.home.AppViewModel
 import hu.bbara.purefin.ui.screen.episode.TvEpisodeScreen
 import hu.bbara.purefin.ui.screen.movie.TvMovieScreen
 import hu.bbara.purefin.ui.screen.series.TvSeriesScreen
@@ -51,6 +53,10 @@ fun EntryProviderScope<Route>.tvPlayerSection() {
 
 fun EntryProviderScope<Route>.tvLibrarySection() {
     entry<Route.LibraryRoute> { route ->
-        TvLibraryScreen(library = route.library)
+        val viewModel: AppViewModel = hiltViewModel()
+        TvLibraryScreen(
+            library = route.library,
+            onMediaSelected = viewModel::onMediaSelected
+        )
     }
 }

app-tv/src/main/java/hu/bbara/purefin/ui/screen/TvAppScreen.kt

@@ -2,7 +2,6 @@ package hu.bbara.purefin.ui.screen
 
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.outlined.Collections
 import androidx.compose.material.icons.outlined.Home
 import androidx.compose.material.icons.outlined.Movie
 import androidx.compose.material.icons.outlined.Tv
@@ -10,18 +9,24 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.remember
-import androidx.compose.runtime.saveable.rememberSaveable
-import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.lifecycle.compose.LifecycleResumeEffect
-import hu.bbara.purefin.model.LibraryKind
+import androidx.lifecycle.viewmodel.navigation3.rememberViewModelStoreNavEntryDecorator
+import androidx.navigation3.runtime.NavBackStack
+import androidx.navigation3.runtime.entryProvider
+import androidx.navigation3.runtime.rememberNavBackStack
+import androidx.navigation3.runtime.rememberSaveableStateHolderNavEntryDecorator
+import androidx.navigation3.ui.NavDisplay
 import hu.bbara.purefin.feature.browse.home.AppViewModel
+import hu.bbara.purefin.model.LibraryKind
+import hu.bbara.purefin.navigation.LibraryDto
+import hu.bbara.purefin.navigation.LocalNavigationManager
+import hu.bbara.purefin.navigation.Route
 import hu.bbara.purefin.ui.screen.home.TvHomeScreen
-import hu.bbara.purefin.ui.screen.home.components.TvDrawerDestination
 import hu.bbara.purefin.ui.screen.home.components.TvDrawerDestinationItem
 import hu.bbara.purefin.ui.screen.home.components.TvNavigationDrawer
-import hu.bbara.purefin.ui.screen.libraries.TvLibrariesOverviewScreen
+import hu.bbara.purefin.ui.screen.library.TvLibraryScreen
 
 @Composable
 fun TvAppScreen(
@@ -32,45 +37,41 @@ fun TvAppScreen(
     val continueWatching by viewModel.continueWatching.collectAsState()
     val nextUp by viewModel.nextUp.collectAsState()
     val latestLibraryContent by viewModel.latestLibraryContent.collectAsState()
+    val navigationManager = LocalNavigationManager.current
 
-    var selectedDestination by rememberSaveable { androidx.compose.runtime.mutableStateOf(TvDrawerDestination.HOME) }
+    @Suppress("UNCHECKED_CAST")
+    val backStack = rememberNavBackStack(Route.Home) as NavBackStack<Route>
+    val selectedDestination = backStack.lastOrNull() ?: Route.Home
 
-    val destinations = remember(libraries, selectedDestination) {
+    val destinations = remember(libraries) {
         listOf(
             TvDrawerDestinationItem(
-                destination = TvDrawerDestination.HOME,
+                destination = Route.Home,
                 label = "Home",
-                icon = Icons.Outlined.Home,
+                icon = Icons.Outlined.Home
-                selected = selectedDestination == TvDrawerDestination.HOME
+            )
-            ),
+        ) + libraries.map { library ->
+            val destination = Route.LibraryRoute(
+                library = LibraryDto(id = library.id, name = library.name)
+            )
             TvDrawerDestinationItem(
-                destination = TvDrawerDestination.LIBRARIES,
+                destination = destination,
-                label = "Libraries",
+                label = library.name,
-                icon = when {
+                icon = when (library.type) {
-                    libraries.any { it.type == LibraryKind.MOVIES } -> Icons.Outlined.Movie
+                    LibraryKind.MOVIES -> Icons.Outlined.Movie
-                    libraries.any { it.type == LibraryKind.SERIES } -> Icons.Outlined.Tv
+                    LibraryKind.SERIES -> Icons.Outlined.Tv
-                    else -> Icons.Outlined.Collections
+                }
-                },
-                selected = selectedDestination == TvDrawerDestination.LIBRARIES
-            )
             )
         }
+    }
 
     LifecycleResumeEffect(Unit) {
         viewModel.onResumed()
         onPauseOrDispose { }
     }
 
-    TvNavigationDrawer(
+    val tvEntryProvider = entryProvider {
-        destinations = destinations,
+        entry<Route.Home> {
-        selectedDestination = selectedDestination,
-        onDestinationSelected = { destination ->
-            selectedDestination = destination
-        },
-        modifier = modifier.fillMaxSize()
-    ) {
-        when (selectedDestination) {
-            TvDrawerDestination.HOME -> {
             TvHomeScreen(
                 libraries = libraries,
                 libraryContent = latestLibraryContent,
@@ -80,15 +81,44 @@ fun TvAppScreen(
                 modifier = Modifier.fillMaxSize()
             )
         }
-            TvDrawerDestination.LIBRARIES -> {
+        entry<Route.LibraryRoute> { route ->
-                TvLibrariesOverviewScreen(
+            TvLibraryScreen(
-                    libraries = libraries,
+                library = route.library,
-                    onLibrarySelected = { library ->
+                onMediaSelected = viewModel::onMediaSelected,
-                        viewModel.onLibrarySelected(library.id, library.name)
-                    },
                 modifier = Modifier.fillMaxSize()
             )
         }
     }
+
+    TvNavigationDrawer(
+        destinations = destinations,
+        selectedDestination = selectedDestination,
+        onDestinationSelected = { destination ->
+            if (selectedDestination != destination) {
+                backStack.clear()
+                backStack.add(Route.Home)
+                if (destination is Route.LibraryRoute) {
+                    backStack.add(destination)
+                }
+            }
+        },
+        modifier = modifier.fillMaxSize()
+    ) {
+        NavDisplay(
+            backStack = backStack,
+            onBack = {
+                if (backStack.size > 1) {
+                    backStack.removeLastOrNull()
+                } else {
+                    navigationManager.pop()
+                }
+            },
+            entryDecorators = listOf(
+                rememberSaveableStateHolderNavEntryDecorator(),
+                rememberViewModelStoreNavEntryDecorator()
+            ),
+            entryProvider = tvEntryProvider,
+            modifier = Modifier.fillMaxSize()
+        )
     }
 }

app-tv/src/main/java/hu/bbara/purefin/ui/screen/home/components/TvHomeModels.kt

@@ -1,15 +1,10 @@
 package hu.bbara.purefin.ui.screen.home.components
 
 import androidx.compose.ui.graphics.vector.ImageVector
-
+import hu.bbara.purefin.navigation.Route
-enum class TvDrawerDestination {
-    HOME,
-    LIBRARIES
-}
 
 data class TvDrawerDestinationItem(
-    val destination: TvDrawerDestination,
+    val destination: Route,
     val label: String,
-    val icon: ImageVector,
+    val icon: ImageVector
-    val selected: Boolean = false
 )

app-tv/src/main/java/hu/bbara/purefin/ui/screen/home/components/TvNavigationDrawer.kt

@@ -30,9 +30,10 @@ import androidx.tv.material3.Icon
 import androidx.tv.material3.NavigationDrawer
 import androidx.tv.material3.NavigationDrawerItem
 import androidx.tv.material3.Text
-import androidx.tv.material3.MaterialTheme as TvMaterialTheme
 import androidx.tv.material3.darkColorScheme
+import hu.bbara.purefin.navigation.Route
 import hu.bbara.purefin.tv.R
+import androidx.tv.material3.MaterialTheme as TvMaterialTheme
 
 internal const val TvDrawerItemTagPrefix = "tv-drawer-item-"
 internal const val TvDrawerTitleTag = "tv-drawer-title"
@@ -43,8 +44,8 @@ private val TvDrawerExpandedWidth = 280.dp
 @Composable
 fun TvNavigationDrawer(
     destinations: List<TvDrawerDestinationItem>,
-    selectedDestination: TvDrawerDestination,
+    selectedDestination: Route,
-    onDestinationSelected: (TvDrawerDestination) -> Unit,
+    onDestinationSelected: (Route) -> Unit,
     modifier: Modifier = Modifier,
     content: @Composable () -> Unit
 ) {
@@ -132,15 +133,15 @@ fun TvDrawerHeader(
 private fun androidx.tv.material3.NavigationDrawerScope.TvNavigationDrawerRail(
     drawerValue: DrawerValue,
     destinations: List<TvDrawerDestinationItem>,
-    selectedDestination: TvDrawerDestination,
+    selectedDestination: Route,
-    onDestinationSelected: (TvDrawerDestination) -> Unit,
+    onDestinationSelected: (Route) -> Unit,
 ) {
     val expanded = drawerValue == DrawerValue.Open
     val drawerWidth = animateDpAsState(
         targetValue = if (expanded) TvDrawerExpandedWidth else TvDrawerCollapsedWidth,
         label = "tv-drawer-width"
     )
-    val scheme = androidx.tv.material3.MaterialTheme.colorScheme
+    val scheme = MaterialTheme.colorScheme
 
     Box(
         modifier = Modifier

app-tv/src/main/java/hu/bbara/purefin/ui/screen/library/TvLibraryScreen.kt

@@ -4,15 +4,12 @@ import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.PaddingValues
-import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.statusBarsPadding
 import androidx.compose.foundation.lazy.grid.GridCells
 import androidx.compose.foundation.lazy.grid.LazyVerticalGrid
 import androidx.compose.foundation.lazy.grid.items
-import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.automirrored.outlined.ArrowBack
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.Text
@@ -22,16 +19,15 @@ import androidx.compose.runtime.collectAsState
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
 import androidx.hilt.navigation.compose.hiltViewModel
-import hu.bbara.purefin.navigation.LibraryDto
-import hu.bbara.purefin.ui.model.MediaUiModel
 import hu.bbara.purefin.feature.browse.library.LibraryViewModel
-import hu.bbara.purefin.ui.common.button.PurefinIconButton
+import hu.bbara.purefin.navigation.LibraryDto
 import hu.bbara.purefin.ui.common.card.PosterCard
-import java.util.UUID
+import hu.bbara.purefin.ui.model.MediaUiModel
 
 @Composable
 fun TvLibraryScreen(
     library: LibraryDto,
+    onMediaSelected: (MediaUiModel) -> Unit,
     viewModel: LibraryViewModel = hiltViewModel(),
     modifier: Modifier = Modifier
 ) {
@@ -45,15 +41,13 @@ fun TvLibraryScreen(
         modifier = modifier,
         topBar = {
             TvLibraryTopBar(
-                title = library.name,
+                title = library.name
-                onBack = viewModel::onBack
             )
         }
     ) { innerPadding ->
         TvLibraryContent(
             libraryItems = libraryItems.value,
-            onMovieSelected = viewModel::onMovieSelected,
+            onMediaSelected = onMediaSelected,
-            onSeriesSelected = viewModel::onSeriesSelected,
             modifier = Modifier.padding(innerPadding)
         )
     }
@@ -61,40 +55,23 @@ fun TvLibraryScreen(
 
 @Composable
 private fun TvLibraryTopBar(
-    title: String,
+    title: String
-    onBack: () -> Unit
 ) {
-    val scheme = MaterialTheme.colorScheme
-    Row(
-        modifier = Modifier
-            .fillMaxWidth()
-            .statusBarsPadding()
-            .padding(horizontal = 16.dp, vertical = 12.dp),
-        horizontalArrangement = Arrangement.spacedBy(12.dp)
-    ) {
-        PurefinIconButton(
-            icon = Icons.AutoMirrored.Outlined.ArrowBack,
-            contentDescription = "Back",
-            onClick = onBack,
-            focusedScale = 1.1f,
-            focusedBorderWidth = 2.5.dp,
-            focusedBorderColor = scheme.onPrimary,
-            focusedBackgroundColor = scheme.primary
-        )
     Text(
         text = title,
         style = MaterialTheme.typography.titleLarge,
         color = MaterialTheme.colorScheme.onBackground,
-            modifier = Modifier.padding(top = 12.dp)
+        modifier = Modifier
+            .fillMaxWidth()
+            .statusBarsPadding()
+            .padding(horizontal = 16.dp, vertical = 12.dp)
     )
-    }
 }
 
 @Composable
 fun TvLibraryContent(
     libraryItems: List<MediaUiModel>,
-    onMovieSelected: (UUID) -> Unit,
+    onMediaSelected: (MediaUiModel) -> Unit,
-    onSeriesSelected: (UUID) -> Unit,
     modifier: Modifier = Modifier
 ) {
     Column(modifier = modifier) {
@@ -108,9 +85,9 @@ fun TvLibraryContent(
             items(libraryItems, key = { item -> item.id }) { item ->
                 PosterCard(
                     item = item,
-                    onMovieSelected = onMovieSelected,
+                    onMovieSelected = { onMediaSelected(item) },
-                    onSeriesSelected = onSeriesSelected,
+                    onSeriesSelected = { onMediaSelected(item) },
-                    onEpisodeSelected = { _, _, _ -> }
+                    onEpisodeSelected = { _, _, _ -> onMediaSelected(item) }
                 )
             }
         }