feat: add DownloadsViewModel for managing offline media downloads

app/src/main/java/hu/bbara/purefin/app/home/ui/DownloadsContent.kt

@@ -1,39 +1,71 @@
 package hu.bbara.purefin.app.home.ui
 
+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.fillMaxSize
 import androidx.compose.foundation.layout.size
+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.outlined.Download
 import androidx.compose.material3.Icon
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
+import androidx.hilt.navigation.compose.hiltViewModel
+import hu.bbara.purefin.common.ui.PosterCard
+import hu.bbara.purefin.feature.shared.download.DownloadsViewModel
 
 @Composable
 fun DownloadsContent(
     modifier: Modifier = Modifier,
+    viewModel: DownloadsViewModel = hiltViewModel(),
 ) {
-    Column(
-        modifier = modifier.fillMaxSize(),
-        verticalArrangement = Arrangement.Center,
-        horizontalAlignment = Alignment.CenterHorizontally
-    ) {
-        Icon(
-            imageVector = Icons.Outlined.Download,
-            contentDescription = null,
-            modifier = Modifier.size(64.dp),
-            tint = MaterialTheme.colorScheme.onSurfaceVariant
-        )
-        Text(
-            text = "No downloads yet",
-            style = MaterialTheme.typography.titleMedium,
-            color = MaterialTheme.colorScheme.onSurfaceVariant,
-            modifier = Modifier
-        )
+    val downloads = viewModel.downloads.collectAsState(emptyList())
+
+    if (downloads.value.isEmpty()) {
+        Column(
+            modifier = modifier.fillMaxSize(),
+            verticalArrangement = Arrangement.Center,
+            horizontalAlignment = Alignment.CenterHorizontally
+        ) {
+            Icon(
+                imageVector = Icons.Outlined.Download,
+                contentDescription = null,
+                modifier = Modifier.size(64.dp),
+                tint = MaterialTheme.colorScheme.onSurfaceVariant
+            )
+            Text(
+                text = "No downloads yet",
+                style = MaterialTheme.typography.titleMedium,
+                color = MaterialTheme.colorScheme.onSurfaceVariant,
+                modifier = Modifier
+            )
+        }
     }
+
+    LazyVerticalGrid(
+        columns = GridCells.Adaptive(minSize = 120.dp),
+        contentPadding = PaddingValues(16.dp),
+        horizontalArrangement = Arrangement.spacedBy(16.dp),
+        verticalArrangement = Arrangement.spacedBy(16.dp),
+        modifier = modifier.background(MaterialTheme.colorScheme.background)
+    ) {
+        items(downloads.value) { item ->
+            PosterCard(
+                item = item,
+                onMovieSelected = viewModel::onMovieSelected,
+                onSeriesSelected = viewModel::onSeriesSelected,
+                onEpisodeSelected = { _, _, _ -> },
+            )
+        }
+    }
+
 }

core/data/src/main/java/hu/bbara/purefin/core/data/room/offline/OfflineMediaDatabase.kt

@@ -20,7 +20,7 @@ import hu.bbara.purefin.core.data.room.entity.SeriesEntity
         SeasonEntity::class,
         EpisodeEntity::class,
     ],
-    version = 4,
+    version = 5,
     exportSchema = false
 )
 @TypeConverters(UuidConverters::class)

feature/shared/src/main/java/hu/bbara/purefin/feature/shared/download/DownloadsViewModel.kt

@@ -0,0 +1,60 @@
+package hu.bbara.purefin.feature.shared.download
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import hu.bbara.purefin.core.data.OfflineMediaRepository
+import hu.bbara.purefin.core.data.navigation.MovieDto
+import hu.bbara.purefin.core.data.navigation.NavigationManager
+import hu.bbara.purefin.core.data.navigation.Route
+import hu.bbara.purefin.core.data.navigation.SeriesDto
+import hu.bbara.purefin.feature.download.MediaDownloadManager
+import hu.bbara.purefin.feature.shared.home.PosterItem
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.launch
+import org.jellyfin.sdk.model.UUID
+import org.jellyfin.sdk.model.api.BaseItemKind
+import javax.inject.Inject
+
+@HiltViewModel
+class DownloadsViewModel @Inject constructor(
+    private val offlineMediaRepository: OfflineMediaRepository,
+    private val navigationManager: NavigationManager,
+    private val downloadManager: MediaDownloadManager
+) : ViewModel() {
+
+    fun onMovieSelected(movieId: UUID) {
+        navigationManager.navigate(Route.MovieRoute(
+            MovieDto(
+                id = movieId,
+            )
+        ))
+    }
+
+    fun onSeriesSelected(seriesId: UUID) {
+        viewModelScope.launch {
+            navigationManager.navigate(Route.SeriesRoute(
+                SeriesDto(
+                    id = seriesId,
+                )
+            ))
+        }
+    }
+
+    val downloads = combine(
+        offlineMediaRepository.movies,
+        offlineMediaRepository.series
+    ) { movies, series ->
+        movies.values.map {
+            PosterItem(
+                type = BaseItemKind.MOVIE,
+                movie = it
+            )
+        } + series.values.map {
+            PosterItem(
+                type = BaseItemKind.SERIES,
+                series = it
+            )
+        }
+    }
+}