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Make media detail flows reactive

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This commit is contained in:
Barnabas Balogh
2026-05-13 16:43:42 +02:00
parent 406d0f4ed8
commit 3ee4b558f5
4 changed files with 74 additions and 31 deletions
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33
core/src/main/java/hu/bbara/purefin/core/feature/content/episode/EpisodeScreenViewModel.kt
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@@ -11,11 +11,14 @@ import hu.bbara.purefin.core.navigation.Route
import hu.bbara.purefin.core.navigation.SeriesDto
import hu.bbara.purefin.model.Episode
import java.util.UUID
import kotlinx.coroutines.ExperimentalCoroutinesApi
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.SharingStarted
import kotlinx.coroutines.flow.StateFlow
import kotlinx.coroutines.flow.asStateFlow
import kotlinx.coroutines.flow.combine
import kotlinx.coroutines.flow.flatMapLatest
import kotlinx.coroutines.flow.flowOf
import kotlinx.coroutines.flow.map
import kotlinx.coroutines.flow.stateIn
import kotlinx.coroutines.launch
import javax.inject.Inject
@@ -30,19 +33,23 @@ class EpisodeScreenViewModel @Inject constructor(
private val _episodeId = MutableStateFlow<UUID?>(null)
private val _seriesId = MutableStateFlow<UUID?>(null)
val episode: StateFlow<Episode?> = combine(
_episodeId,
mediaCatalogReader.episodes
) { id, episodesMap ->
id?.let { episodesMap[it] }
}.stateIn(viewModelScope, SharingStarted.WhileSubscribed(5_000), null)
@OptIn(ExperimentalCoroutinesApi::class)
val episode: StateFlow<Episode?> = _episodeId
.flatMapLatest { episodeId ->
if (episodeId == null) flowOf(null) else mediaCatalogReader.getEpisode(episodeId)
}
.stateIn(viewModelScope, SharingStarted.WhileSubscribed(5_000), null)
val seriesTitle: StateFlow<String?> = combine(
_seriesId,
mediaCatalogReader.series
) { seriesId, seriesMap ->
seriesId?.let { id -> seriesMap[id]?.name }
}.stateIn(viewModelScope, SharingStarted.WhileSubscribed(5_000), null)
@OptIn(ExperimentalCoroutinesApi::class)
val seriesTitle: StateFlow<String?> = _seriesId
.flatMapLatest { seriesId ->
if (seriesId == null) {
flowOf(null)
} else {
mediaCatalogReader.getSeries(seriesId).map { it?.name }
}
}
.stateIn(viewModelScope, SharingStarted.WhileSubscribed(5_000), null)
private val _downloadState = MutableStateFlow<DownloadState>(DownloadState.NotDownloaded)
val downloadState: StateFlow<DownloadState> = _downloadState.asStateFlow()

16
core/src/main/java/hu/bbara/purefin/core/feature/content/movie/MovieScreenViewModel.kt
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@@ -10,11 +10,13 @@ import hu.bbara.purefin.core.navigation.NavigationManager
import hu.bbara.purefin.core.navigation.Route
import hu.bbara.purefin.model.Movie
import java.util.UUID
import kotlinx.coroutines.ExperimentalCoroutinesApi
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.SharingStarted
import kotlinx.coroutines.flow.StateFlow
import kotlinx.coroutines.flow.asStateFlow
import kotlinx.coroutines.flow.combine
import kotlinx.coroutines.flow.flatMapLatest
import kotlinx.coroutines.flow.flowOf
import kotlinx.coroutines.flow.stateIn
import kotlinx.coroutines.launch
import javax.inject.Inject
@@ -28,12 +30,12 @@ class MovieScreenViewModel @Inject constructor(
private val _movieId = MutableStateFlow<UUID?>(null)
val movie: StateFlow<Movie?> = combine(
_movieId,
mediaCatalogReader.movies
) { movieId, movies ->
movieId?.let { movies[it] }
}.stateIn(viewModelScope, SharingStarted.WhileSubscribed(5_000), null)
@OptIn(ExperimentalCoroutinesApi::class)
val movie: StateFlow<Movie?> = _movieId
.flatMapLatest { movieId ->
if (movieId == null) flowOf(null) else mediaCatalogReader.getMovie(movieId)
}
.stateIn(viewModelScope, SharingStarted.WhileSubscribed(5_000), null)
private val _downloadState = MutableStateFlow<DownloadState>(DownloadState.NotDownloaded)
val downloadState: StateFlow<DownloadState> = _downloadState.asStateFlow()

13
core/src/main/java/hu/bbara/purefin/core/feature/content/series/SeriesViewModel.kt
View File

@@ -18,6 +18,8 @@ import kotlinx.coroutines.flow.SharingStarted
import kotlinx.coroutines.flow.StateFlow
import kotlinx.coroutines.flow.combine
import kotlinx.coroutines.flow.first
import kotlinx.coroutines.flow.flatMapLatest
import kotlinx.coroutines.flow.flowOf
import kotlinx.coroutines.flow.stateIn
import kotlinx.coroutines.launch
import java.util.UUID
@@ -33,12 +35,11 @@ class SeriesViewModel @Inject constructor(
private val _seriesId = MutableStateFlow<UUID?>(null)
@OptIn(ExperimentalCoroutinesApi::class)
val series: StateFlow<Series?> = combine(
_seriesId,
mediaCatalogReader.series
) { seriesId, seriesMap ->
seriesId?.let { seriesMap[it] }
}.stateIn(viewModelScope, SharingStarted.WhileSubscribed(5_000), null)
val series: StateFlow<Series?> = _seriesId
.flatMapLatest { seriesId ->
if (seriesId == null) flowOf(null) else mediaCatalogReader.getSeries(seriesId)
}
.stateIn(viewModelScope, SharingStarted.WhileSubscribed(5_000), null)
private val _seriesDownloadState = MutableStateFlow<DownloadState>(DownloadState.NotDownloaded)
val seriesDownloadState: StateFlow<DownloadState> = _seriesDownloadState