refactor: extract InMemoryMediaRepository from InMemoryAppContentRepository

- Create InMemoryMediaRepository to hold in-memory media state (movies,
  series, episodes), lazy series content loading, and watch progress updates
- InMemoryAppContentRepository delegates MediaRepository via Kotlin's by
  delegation, injecting InMemoryMediaRepository as a composite component
- CompositeMediaRepository now uses InMemoryMediaRepository directly as the
  online repository instead of AppContentRepository

core/data/src/main/java/hu/bbara/purefin/core/data/CompositeMediaRepository.kt

@@ -27,7 +27,7 @@ import javax.inject.Singleton
 @Singleton
 class CompositeMediaRepository @Inject constructor(
     private val offlineRepository: OfflineMediaRepository,
-    private val onlineRepository: AppContentRepository,
+    private val onlineRepository: InMemoryMediaRepository,
     private val userSessionRepository: UserSessionRepository,
 ) : MediaRepository {
 

core/data/src/main/java/hu/bbara/purefin/core/data/InMemoryAppContentRepository.kt

@@ -13,16 +13,13 @@ import hu.bbara.purefin.core.model.MediaRepositoryState
 import hu.bbara.purefin.core.model.Movie
 import hu.bbara.purefin.core.model.Season
 import hu.bbara.purefin.core.model.Series
-import kotlinx.coroutines.CompletableDeferred
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.SupervisorJob
-import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.flow.first
-import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.sync.Mutex
@@ -42,10 +39,10 @@ import javax.inject.Singleton
 class InMemoryAppContentRepository @Inject constructor(
     val userSessionRepository: UserSessionRepository,
     val jellyfinApiClient: JellyfinApiClient,
-    private val homeCacheDataStore: DataStore<HomeCache>
-) : AppContentRepository {
+    private val homeCacheDataStore: DataStore<HomeCache>,
+    private val mediaRepository: InMemoryMediaRepository,
+) : AppContentRepository, MediaRepository by mediaRepository {
 
-    private val ready = CompletableDeferred<Unit>()
     private val readyMutex = Mutex()
     private val scope = CoroutineScope(SupervisorJob() + Dispatchers.IO)
     private var initialLoadTimestamp = 0L
@@ -56,23 +53,6 @@ class InMemoryAppContentRepository @Inject constructor(
     private val _libraries: MutableStateFlow<List<Library>> = MutableStateFlow(emptyList())
     override val libraries: StateFlow<List<Library>> = _libraries.asStateFlow()
 
-    private val _movies: MutableStateFlow<Map<UUID, Movie>> = MutableStateFlow(emptyMap())
-    override val movies: StateFlow<Map<UUID, Movie>> = _movies.asStateFlow()
-
-    private val _series: MutableStateFlow<Map<UUID, Series>> = MutableStateFlow(emptyMap())
-    override val series: StateFlow<Map<UUID, Series>> = _series.asStateFlow()
-
-    private val _episodes: MutableStateFlow<Map<UUID, Episode>> = MutableStateFlow(emptyMap())
-    override val episodes: StateFlow<Map<UUID, Episode>> = _episodes.asStateFlow()
-
-    override fun observeSeriesWithContent(seriesId: UUID): Flow<Series?> {
-        scope.launch {
-            awaitReady()
-            ensureSeriesContentLoaded(seriesId)
-        }
-        return _series.map { it[seriesId] }
-    }
-
     private val _continueWatching: MutableStateFlow<List<Media>> = MutableStateFlow(emptyList())
     override val continueWatching: StateFlow<List<Media>> = _continueWatching.asStateFlow()
 
@@ -136,8 +116,9 @@ class InMemoryAppContentRepository @Inject constructor(
     }
 
     override suspend fun ensureReady() {
+        val ready = mediaRepository.ready
         if (ready.isCompleted) {
-            ready.await() // rethrows if completed exceptionally
+            ready.await()
             return
         }
 
@@ -155,10 +136,10 @@ class InMemoryAppContentRepository @Inject constructor(
                 persistHomeCache()
                 _state.value = MediaRepositoryState.Ready
                 initialLoadTimestamp = System.currentTimeMillis()
-                ready.complete(Unit)
+                mediaRepository.signalReady()
             } catch (t: Throwable) {
                 _state.value = MediaRepositoryState.Error(t)
-                ready.completeExceptionally(t)
+                mediaRepository.signalError(t)
                 throw t
             } finally {
                 readyMutex.unlock()
@@ -168,10 +149,6 @@ class InMemoryAppContentRepository @Inject constructor(
         }
     }
 
-    private suspend fun awaitReady() {
-        ready.await()
-    }
-
     suspend fun loadLibraries() {
         val librariesItem = jellyfinApiClient.getLibraries()
         //TODO add support for playlists
@@ -186,10 +163,10 @@ class InMemoryAppContentRepository @Inject constructor(
         _libraries.value = filledLibraries
 
         val movies = filledLibraries.filter { it.type == CollectionType.MOVIES }.flatMap { it.movies.orEmpty() }
-        _movies.update { current -> current + movies.associateBy { it.id } }
+        mediaRepository._movies.update { current -> current + movies.associateBy { it.id } }
 
         val series = filledLibraries.filter { it.type == CollectionType.TVSHOWS }.flatMap { it.series.orEmpty() }
-        _series.update { current -> current + series.associateBy { it.id } }
+        mediaRepository._series.update { current -> current + series.associateBy { it.id } }
     }
 
     suspend fun loadLibrary(library: Library): Library {
@@ -211,7 +188,7 @@ class InMemoryAppContentRepository @Inject constructor(
         val movieItem = jellyfinApiClient.getItemInfo(movie.id)
             ?: throw RuntimeException("Movie not found")
         val updatedMovie = movieItem.toMovie(serverUrl(), movie.libraryId)
-        _movies.update { it + (updatedMovie.id to updatedMovie) }
+        mediaRepository._movies.update { it + (updatedMovie.id to updatedMovie) }
         return updatedMovie
     }
 
@@ -219,7 +196,7 @@ class InMemoryAppContentRepository @Inject constructor(
         val seriesItem = jellyfinApiClient.getItemInfo(series.id)
             ?: throw RuntimeException("Series not found")
         val updatedSeries = seriesItem.toSeries(serverUrl(), series.libraryId)
-        _series.update { it + (updatedSeries.id to updatedSeries) }
+        mediaRepository._series.update { it + (updatedSeries.id to updatedSeries) }
         return updatedSeries
     }
 
@@ -242,7 +219,7 @@ class InMemoryAppContentRepository @Inject constructor(
             when (item.type) {
                 BaseItemKind.EPISODE -> {
                     val episode = item.toEpisode(serverUrl())
-                    _episodes.update { it + (episode.id to episode) }
+                    mediaRepository._episodes.update { it + (episode.id to episode) }
                 }
                 else -> { /* Do nothing */ }
             }
@@ -262,7 +239,7 @@ class InMemoryAppContentRepository @Inject constructor(
         // Load episodes
         nextUpItems.forEach { item ->
             val episode = item.toEpisode(serverUrl())
-            _episodes.update { it + (episode.id to episode) }
+            mediaRepository._episodes.update { it + (episode.id to episode) }
         }
     }
 
@@ -306,53 +283,12 @@ class InMemoryAppContentRepository @Inject constructor(
         //TODO Load seasons and episodes, other types are already loaded at this point.
     }
 
-    private suspend fun ensureSeriesContentLoaded(seriesId: UUID) {
-        awaitReady()
-        // Skip if content is already loaded in-memory
-        _series.value[seriesId]?.takeIf { it.seasons.isNotEmpty() }?.let { return }
-
-        val series = this.series.value[seriesId] ?: throw RuntimeException("Series not found")
-
-        val emptySeasonsItem = jellyfinApiClient.getSeasons(seriesId)
-        val emptySeasons = emptySeasonsItem.map { it.toSeason(serverUrl()) }
-        val filledSeasons = emptySeasons.map { season ->
-            val episodesItem = jellyfinApiClient.getEpisodesInSeason(seriesId, season.id)
-            val episodes = episodesItem.map { it.toEpisode(serverUrl()) }
-            season.copy(episodes = episodes)
-        }
-        val updatedSeries = series.copy(seasons = filledSeasons)
-        _series.update { it + (updatedSeries.id to updatedSeries) }
-
-        val allEpisodes = filledSeasons.flatMap { it.episodes }
-        _episodes.update { current -> current + allEpisodes.associateBy { it.id } }
-    }
-
-    override suspend fun updateWatchProgress(mediaId: UUID, positionMs: Long, durationMs: Long) {
-        if (durationMs <= 0) return
-        val progressPercent = (positionMs.toDouble() / durationMs.toDouble()) * 100.0
-        val watched = progressPercent >= 90.0
-
-        if (_movies.value.containsKey(mediaId)) {
-            _movies.update { current ->
-                val movie = current[mediaId] ?: return@update current
-                current + (mediaId to movie.copy(progress = progressPercent, watched = watched))
-            }
-            return
-        }
-        if (_episodes.value.containsKey(mediaId)) {
-            _episodes.update { current ->
-                val episode = current[mediaId] ?: return@update current
-                current + (mediaId to episode.copy(progress = progressPercent, watched = watched))
-            }
-        }
-    }
-
     companion object {
         private const val REFRESH_MIN_INTERVAL_MS = 30_000L
     }
 
     override suspend fun refreshHomeData() {
-        awaitReady()
+        mediaRepository.ready.await()
         // Skip refresh if the initial load (or last refresh) just happened
         val elapsed = System.currentTimeMillis() - initialLoadTimestamp
         if (elapsed < REFRESH_MIN_INTERVAL_MS) return
@@ -455,10 +391,6 @@ class InMemoryAppContentRepository @Inject constructor(
 
     private fun BaseItemDto.toEpisode(serverUrl: String): Episode {
         val releaseDate = formatReleaseDate(premiereDate, productionYear)
-        val rating = officialRating ?: "NR"
-        val runtime = formatRuntime(runTimeTicks)
-        val format = container?.uppercase() ?: "VIDEO"
-        val synopsis = overview ?: "No synopsis available."
         val heroImageUrl = id?.let { itemId ->
             JellyfinImageHelper.toImageUrl(
                 url = serverUrl,
@@ -473,12 +405,12 @@ class InMemoryAppContentRepository @Inject constructor(
             title = name ?: "Unknown title",
             index = indexNumber!!,
             releaseDate = releaseDate,
-            rating = rating,
-            runtime = runtime,
+            rating = officialRating ?: "NR",
+            runtime = formatRuntime(runTimeTicks),
             progress = userData!!.playedPercentage,
             watched = userData!!.played,
-            format = format,
-            synopsis = synopsis,
+            format = container?.uppercase() ?: "VIDEO",
+            synopsis = overview ?: "No synopsis available.",
             heroImageUrl = heroImageUrl,
             cast = emptyList()
         )

core/data/src/main/java/hu/bbara/purefin/core/data/InMemoryMediaRepository.kt

@@ -0,0 +1,160 @@
+package hu.bbara.purefin.core.data
+
+import hu.bbara.purefin.core.data.client.JellyfinApiClient
+import hu.bbara.purefin.core.data.image.JellyfinImageHelper
+import hu.bbara.purefin.core.data.session.UserSessionRepository
+import hu.bbara.purefin.core.model.Episode
+import hu.bbara.purefin.core.model.Movie
+import hu.bbara.purefin.core.model.Season
+import hu.bbara.purefin.core.model.Series
+import kotlinx.coroutines.CompletableDeferred
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.update
+import kotlinx.coroutines.launch
+import org.jellyfin.sdk.model.api.BaseItemDto
+import org.jellyfin.sdk.model.api.ImageType
+import java.time.LocalDateTime
+import java.time.format.DateTimeFormatter
+import java.util.Locale
+import java.util.UUID
+import java.util.concurrent.TimeUnit
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Singleton
+class InMemoryMediaRepository @Inject constructor(
+    private val userSessionRepository: UserSessionRepository,
+    private val jellyfinApiClient: JellyfinApiClient,
+) : MediaRepository {
+
+    private val scope = CoroutineScope(SupervisorJob() + Dispatchers.IO)
+    internal val ready = CompletableDeferred<Unit>()
+
+    internal val _movies: MutableStateFlow<Map<UUID, Movie>> = MutableStateFlow(emptyMap())
+    override val movies: StateFlow<Map<UUID, Movie>> = _movies.asStateFlow()
+
+    internal val _series: MutableStateFlow<Map<UUID, Series>> = MutableStateFlow(emptyMap())
+    override val series: StateFlow<Map<UUID, Series>> = _series.asStateFlow()
+
+    internal val _episodes: MutableStateFlow<Map<UUID, Episode>> = MutableStateFlow(emptyMap())
+    override val episodes: StateFlow<Map<UUID, Episode>> = _episodes.asStateFlow()
+
+    internal fun signalReady() {
+        ready.complete(Unit)
+    }
+
+    internal fun signalError(t: Throwable) {
+        ready.completeExceptionally(t)
+    }
+
+    private suspend fun awaitReady() {
+        ready.await()
+    }
+
+    override fun observeSeriesWithContent(seriesId: UUID): Flow<Series?> {
+        scope.launch {
+            awaitReady()
+            ensureSeriesContentLoaded(seriesId)
+        }
+        return _series.map { it[seriesId] }
+    }
+
+    private suspend fun ensureSeriesContentLoaded(seriesId: UUID) {
+        _series.value[seriesId]?.takeIf { it.seasons.isNotEmpty() }?.let { return }
+
+        val series = _series.value[seriesId] ?: throw RuntimeException("Series not found")
+        val serverUrl = serverUrl()
+
+        val emptySeasonsItem = jellyfinApiClient.getSeasons(seriesId)
+        val emptySeasons = emptySeasonsItem.map { it.toSeason(serverUrl) }
+        val filledSeasons = emptySeasons.map { season ->
+            val episodesItem = jellyfinApiClient.getEpisodesInSeason(seriesId, season.id)
+            val episodes = episodesItem.map { it.toEpisode(serverUrl) }
+            season.copy(episodes = episodes)
+        }
+        val updatedSeries = series.copy(seasons = filledSeasons)
+        _series.update { it + (updatedSeries.id to updatedSeries) }
+
+        val allEpisodes = filledSeasons.flatMap { it.episodes }
+        _episodes.update { current -> current + allEpisodes.associateBy { it.id } }
+    }
+
+    override suspend fun updateWatchProgress(mediaId: UUID, positionMs: Long, durationMs: Long) {
+        if (durationMs <= 0) return
+        val progressPercent = (positionMs.toDouble() / durationMs.toDouble()) * 100.0
+        val watched = progressPercent >= 90.0
+
+        if (_movies.value.containsKey(mediaId)) {
+            _movies.update { current ->
+                val movie = current[mediaId] ?: return@update current
+                current + (mediaId to movie.copy(progress = progressPercent, watched = watched))
+            }
+            return
+        }
+        if (_episodes.value.containsKey(mediaId)) {
+            _episodes.update { current ->
+                val episode = current[mediaId] ?: return@update current
+                current + (mediaId to episode.copy(progress = progressPercent, watched = watched))
+            }
+        }
+    }
+
+    private suspend fun serverUrl(): String = userSessionRepository.serverUrl.first()
+
+    private fun BaseItemDto.toSeason(serverUrl: String): Season {
+        return Season(
+            id = this.id,
+            seriesId = this.seriesId!!,
+            name = this.name ?: "Unknown",
+            index = this.indexNumber ?: 0,
+            unwatchedEpisodeCount = this.userData!!.unplayedItemCount!!,
+            episodeCount = this.childCount!!,
+            episodes = emptyList()
+        )
+    }
+
+    private fun BaseItemDto.toEpisode(serverUrl: String): Episode {
+        val releaseDate = formatReleaseDate(premiereDate, productionYear)
+        val heroImageUrl = id?.let { itemId ->
+            JellyfinImageHelper.toImageUrl(url = serverUrl, itemId = itemId, type = ImageType.PRIMARY)
+        } ?: ""
+        return Episode(
+            id = id,
+            seriesId = seriesId!!,
+            seasonId = parentId!!,
+            title = name ?: "Unknown title",
+            index = indexNumber!!,
+            releaseDate = releaseDate,
+            rating = officialRating ?: "NR",
+            runtime = formatRuntime(runTimeTicks),
+            progress = userData!!.playedPercentage,
+            watched = userData!!.played,
+            format = container?.uppercase() ?: "VIDEO",
+            synopsis = overview ?: "No synopsis available.",
+            heroImageUrl = heroImageUrl,
+            cast = emptyList()
+        )
+    }
+
+    private fun formatReleaseDate(date: LocalDateTime?, fallbackYear: Int?): String {
+        if (date == null) return fallbackYear?.toString() ?: "—"
+        val formatter = DateTimeFormatter.ofPattern("MMM d, yyyy", Locale.getDefault())
+        return date.toLocalDate().format(formatter)
+    }
+
+    private fun formatRuntime(ticks: Long?): String {
+        if (ticks == null || ticks <= 0) return "—"
+        val totalSeconds = ticks / 10_000_000
+        val hours = TimeUnit.SECONDS.toHours(totalSeconds)
+        val minutes = TimeUnit.SECONDS.toMinutes(totalSeconds) % 60
+        return if (hours > 0) "${hours}h ${minutes}m" else "${minutes}m"
+    }
+}