Files
plezy/lib/services/jellyfin_client/parts/browse.dart
T
edde746 352b88109b refactor: extract shared mixins and helpers, drop dead abstractions
Introduces shared seams for paginated views, D-pad reorder, media control
routing, async singletons and the device method channel, then points the
open-coded copies at them.

Also removes unused models and duplicated provider/server plumbing, folds
the twice-implemented artifact store in the server, and factors the
repeated Flutter toolchain prologue in CI into a composite action.
2026-07-26 06:09:48 +02:00

1863 lines
72 KiB
Dart

part of '../../jellyfin_client.dart';
String _segment(String value) => Uri.encodeComponent(value);
/// Transport policy for a hub surface: bounded transient retries, no
/// endpoint failover. See `_getItemsResponse`.
typedef _HubRetryPolicy = ({String operation, List<Duration> attemptTimeouts});
const _HubRetryPolicy _homeHubRetry = (
operation: 'Jellyfin home hubs',
attemptTimeouts: MediaServerTimeouts.homeHubAttemptTimeouts,
);
const _HubRetryPolicy _libraryHubRetry = (
operation: 'Jellyfin library hubs',
attemptTimeouts: MediaServerTimeouts.libraryHubAttemptTimeouts,
);
const _HubRetryPolicy _continueWatchingRetry = (
operation: 'Jellyfin continue watching',
attemptTimeouts: MediaServerTimeouts.homeHubAttemptTimeouts,
);
List<Map<String, dynamic>> _itemsArray(Object? data) {
if (data is Map<String, dynamic>) {
final items = data['Items'];
if (items is List) return items.whereType<Map<String, dynamic>>().toList();
}
if (data is List) return data.whereType<Map<String, dynamic>>().toList();
return const [];
}
/// Builds a [LibraryPage] from an `/Items`-shaped response: the `Items` array
/// run through [map], plus the server's `TotalRecordCount` when it reports one.
/// Responses that omit it (or return a non-int) fall back to
/// [fallbackPageTotal], whose full-page sentinel keeps pagination enabled;
/// [singlePage] endpoints return everything at once, so a full page there means
/// the end of the list, not "there may be more".
LibraryPage<T> _pagedItems<T>(
Object? data, {
required int offset,
required List<T> Function(List<Map<String, dynamic>>) map,
int? requestedSize,
bool singlePage = false,
}) {
final rawItems = _itemsArray(data);
final rawTotal = data is Map<String, dynamic> ? data['TotalRecordCount'] : null;
final fallbackTotal = singlePage
? offset + rawItems.length
: fallbackPageTotal(offset: offset, itemCount: rawItems.length, requestedSize: requestedSize);
return LibraryPage<T>(items: map(rawItems), totalCount: rawTotal is int ? rawTotal : fallbackTotal, offset: offset);
}
/// Slim field set for grid/list browsing — what the card UI actually
/// renders (title, year, watched badge, episode count for series).
///
/// The real Jellyfin web client + Findroid skip explicit `Fields` for
/// list calls; we ask for the minimum extras needed to drive the
/// MediaItem mapper:
/// - `RecursiveItemCount`/`ChildCount` for series leaf count
/// - `UserData` is included in defaults but pinned for safety
/// - `PremiereDate` for sort-by-release-date and episode metadata
/// - `OriginalTitle`/`SortName` for sort + alphabetised display
/// - `Overview` so list rows can show their description
///
/// Heavier fields (`MediaSources`, `People`, `Genres`, `Tags`, `Studios`,
/// `Taglines`, `ProviderIds`, `Chapters`) stay in [_detailFields] — together
/// they added seconds to large-library pages on small home servers.
const _browseFields = 'RecursiveItemCount,ChildCount,UserData,PremiereDate,OriginalTitle,SortName,Overview';
/// Existing episode-row requests can show Plex-style quality labels when the
/// response includes `MediaSources`. Keep this off broad library/search/latest
/// queries because it is the heaviest item field Jellyfin returns.
const _episodeRowFields = '$_browseFields,MediaSources';
/// Folder-tree field set for MEDIA children. The tree renders
/// title/thumb/watch state plus default dto fields (year, runtime, ratings);
/// it deliberately skips `RecursiveItemCount`/`ChildCount` — per-item COUNT
/// queries the server runs for every folder/series row, which made large
/// folder listings very slow — and `Overview`, which the tree never shows.
/// Jellyfin web's folder view requests none of them either. The unwatched
/// badge survives via `UserData.UnplayedItemCount`
/// ([MediaItem.unwatchedCount] fallback).
const _folderBrowseFields = 'UserData,PremiereDate,OriginalTitle,SortName';
/// Folder-tree field set for FILESYSTEM FOLDER children, which render only
/// their name. Queried with `EnableUserData=false`: user data on a folder dto
/// makes the server compute a recursive unplayed count per folder, by far the
/// dominant cost of folder browsing (see [_fetchFolderChildren]).
const _folderRowFields = 'SortName';
/// Latest Albums hub row. `/Users/{id}/Items/Latest` on a music library
/// returns MusicAlbum FOLDER dtos, so [_browseFields] would trigger the same
/// per-folder recursive COUNT queries described on [_folderBrowseFields] —
/// with music libraries in the home fan-out that load helped peg small remote
/// servers (#1552). The album card renders artwork + title + album artist
/// (`AlbumArtist`/`AlbumArtists` are unconditional dto properties), so no
/// count fields are needed; queried with `EnableUserData=false` like the
/// filesystem folder rows. Trade-off: fully played albums lose the watched
/// checkmark on this row (Jellyfin web's latest-albums row shows no play
/// state either).
const _musicAlbumRowFields = 'PremiereDate,OriginalTitle,SortName';
/// Played-track hub rows (Recently Played / Most Played): Audio LEAF dtos.
/// Keeps `UserData` — a cheap direct lookup on leaves that drives the
/// play-state overlay — and drops the folder count fields (meaningless on
/// Audio) and `Overview` (never rendered on track cards).
const _musicTrackRowFields = 'UserData,PremiereDate,OriginalTitle,SortName';
/// Even slimmer set used by [fetchClientSideEpisodeQueue]. Queue rows
/// only need title, thumbnail (`ImageTags['Primary']`), season/episode
/// index, watched state, and the air date that drives the watch order.
/// Title + indices come back without any `Fields` request; we ask for
/// `UserData` (watched indicator) and `PremiereDate` (air-date sort, so
/// Specials interleave — see [compareEpisodesByWatchOrder]). Drops
/// `Overview` etc. so even a thousand-episode shounen show fits in one
/// response.
const _queueFields = 'UserData,PremiereDate';
/// Page size for [fetchClientSideEpisodeQueue]. Keeps each server response
/// bounded while still returning the full series queue.
const _episodeQueuePageSize = 200;
/// How many recently played episodes to scan when stamping `/Shows/NextUp`
/// rows with their series' last-watched date (see [_attachSeriesLastPlayed]).
/// Mirrors [_episodeQueuePageSize]; covers far more distinct series than the
/// Next Up list ever returns, while keeping the response bounded.
const _continueWatchingSeriesLookback = 200;
const _childrenPageSize = 500;
const _pagedListPageSize = 200;
const _playableDescendantTypes = 'Movie,Episode,Audio';
const _playableFolderDescendantTypes = 'Movie,Episode,Video,MusicVideo';
const _episodeOrderQueryParameters = {
'SortBy': 'ParentIndexNumber,IndexNumber,SortName',
'SortOrder': 'Ascending,Ascending,Ascending',
};
bool _isJellyfinFolderDto(Map<String, dynamic> item) {
final type = (item['Type'] as String?)?.toLowerCase();
return type == 'folder' || type == 'collectionfolder' || (type == null && item['IsFolder'] == true);
}
String _jellyfinFolderSortName(Map<String, dynamic> item) {
final raw = item['SortName'] as String? ?? item['Name'] as String? ?? '';
return raw.toLowerCase();
}
/// `/Items/Filters` is a legacy unpaged endpoint; keep failures isolated from
/// the paged Browse tab so very large libraries can still open.
const _filtersTimeout = Duration(seconds: 8);
/// Full field set for the detail screen and the resume / next-up
/// pre-fetch paths. Mirrors what the Jellyfin web detail view requests.
const _detailFields =
'Overview,Genres,People,Studios,ProductionLocations,Tags,Taglines,DateCreated,DateLastSaved,'
'PremiereDate,RecursiveItemCount,ChildCount,UserData,MediaSources,OriginalTitle,SortName,'
// Chapters: Jellyfin returns them at the item level; the playback
// init flow plucks `raw['Chapters']` and feeds the seek-bar tick UI.
'Chapters,'
// Trickplay: per-resolution sprite-sheet manifest. The scrub-thumbnail
// loader reads `raw['Trickplay']` and computes tile URLs from it.
'Trickplay,'
// ProviderIds carries Tmdb/Imdb/Tvdb keys — required for Trakt + the
// unified tracker coordinator to scrobble Jellyfin items without
// any extra round-trip.
'ProviderIds';
mixin _JellyfinBrowseMethods on _JellyfinClientInternals {
// Endpoint conventions follow what the official Jellyfin Kotlin SDK
// generates (cross-checked against the Findroid client). The SDK mixes
// `/Users/{userId}/...` for "user library" / "views" / "latest" / "single
// item" calls and `/Items?userId=...` for the generic list and resume
// endpoints. We mirror that exactly so requests hash the same way against
// proxy rules and rate limiters as a stock Jellyfin app.
@override
Future<List<MediaLibrary>> fetchLibraries() async {
final response = await _http.get('/Users/${_segment(connection.userId)}/Views');
throwIfHttpError(response);
final items = _itemsArray(response.data);
// Jellyfin surfaces the user's collection (BoxSet) and playlist roots as
// top-level views. We expose those as per-library tabs instead of
// standalone library entries — matches the Plex shape and avoids
// duplicating the same data in two navigation slots.
return items
.where((view) {
final ct = (view['CollectionType'] as String?)?.toLowerCase();
return ct != 'boxsets' && ct != 'playlists';
})
.map((view) => JellyfinMappers.library(view, serverId: serverId, serverName: serverName))
.whereType<MediaLibrary>()
.toList();
}
@override
Future<LibraryPage<MediaItem>> fetchLibraryContent(
String libraryId,
LibraryQuery query, {
AbortController? abort,
}) async {
final fields = switch (query.kind) {
MediaKind.album => _musicAlbumRowFields,
MediaKind.track => _musicTrackRowFields,
_ => _browseFields,
};
final translator = JellyfinLibraryQueryTranslator(userId: connection.userId, parentId: libraryId, fields: fields);
final params = translator.toQueryParameters(query);
// MusicAlbum is a folder-like DTO. Asking for UserData makes Jellyfin
// compute recursive play state for every album, which is prohibitively
// expensive on large music libraries. The IsUnplayed query filter still
// works server-side when result DTO user data is disabled.
if (query.kind == MediaKind.album) {
params['EnableUserData'] = 'false';
}
// Artist browsing routes to `/Artists/AlbumArtists` instead of
// `/Items?IncludeItemTypes=MusicArtist`: the /Items query only returns
// folder-derived artists under their folder names, missing tag-only
// per-track artists entirely (and folder names can differ from the tag
// names shown everywhere else). AlbumArtists matches Plex's "album
// artists" library semantic. The branch lives here rather than in the
// translator because the translator's contract is query *parameters*
// only — the endpoint choice is client routing, like the seasons vs
// generic-children split in [fetchChildrenPage]. The artists endpoint
// accepts the same paging/sort/filter/prefix params /Items does
// (ParentId, StartIndex, Limit, SortBy/SortOrder, NameStartsWith/
// NameLessThan, Filters, Fields) and ignores the /Items-only keys.
final isArtistQuery = query.kind == MediaKind.artist;
final endpoint = isArtistQuery ? '/Artists/AlbumArtists' : '/Items';
if (isArtistQuery) {
params.remove('IncludeItemTypes');
params.remove('Recursive');
}
final response = await _http.get(endpoint, queryParameters: params, abort: abort);
throwIfHttpError(response);
final data = response.data;
final items = _itemsArray(data);
final rawTotal = data is Map<String, dynamic> ? data['TotalRecordCount'] : null;
// /Artists/AlbumArtists reports TotalRecordCount=0 when NameStartsWith /
// NameLessThan are set (server-side counting quirk, observed on 10.11);
// treat that as "unknown" so the alpha-prefix filter can still page.
final totalUnreliable = isArtistQuery && rawTotal == 0 && items.isNotEmpty;
final total = rawTotal is int && !totalUnreliable
? rawTotal
: fallbackPageTotal(offset: query.offset, itemCount: items.length, requestedSize: query.limit);
return LibraryPage<MediaItem>(items: _mapItems(items), totalCount: total, offset: query.offset);
}
/// Jellyfin's `/Items/Filters` returns Genres / OfficialRatings / Tags /
/// Categories + values from `/Items/Filters` in a single call. The
/// unwatched/unplayed boolean is synthetic because Jellyfin exposes it as
/// an `/Items` query filter, not a filter-listing category. Keys are
/// translated to Plex's filter naming so the existing filter-param map
/// round-trips through `_buildFilterParams` unchanged; the synthesised
/// `MediaFilter.key` is prefixed `jellyfin:` so FiltersBottomSheet can
/// recognise it as cached and skip the per-category value fetch.
@override
Future<LibraryFilterResult> fetchLibraryFiltersWithValues(String libraryId, {MediaKind? libraryKind}) async {
final filters = <MediaFilter>[
MediaFilter(
filter: 'unwatched',
filterType: 'boolean',
key: 'jellyfin:unwatched',
title: libraryKind?.isMusic == true
? t.libraries.filterCategories.unplayed
: t.libraries.filterCategories.unwatched,
type: 'filter',
),
MediaFilter(
filter: 'favorite',
filterType: 'boolean',
key: 'jellyfin:favorite',
title: t.libraries.filterCategories.favorites,
type: 'filter',
),
];
final data = await _safeFetchFilterPayload(libraryId);
if (data == null) return LibraryFilterResult(filters: filters, cachedValues: const {});
List<String> stringList(Object? raw) {
if (raw is! List) return const [];
return raw.whereType<String>().where((s) => s.isNotEmpty).toList();
}
final raw = <String, List<String>>{
'genre': stringList(data['Genres']),
'contentRating': stringList(data['OfficialRatings']),
'tag': stringList(data['Tags']),
'year': (data['Years'] is List)
? (data['Years'] as List).whereType<num>().map((y) => y.toInt().toString()).toList()
: const <String>[],
};
const order = ['genre', 'year', 'contentRating', 'tag'];
final titles = {
'genre': t.libraries.filterCategories.genre,
'year': t.libraries.filterCategories.year,
'contentRating': t.libraries.filterCategories.contentRating,
'tag': t.libraries.filterCategories.tag,
};
final values = <String, List<MediaFilterValue>>{};
for (final key in order) {
final entries = raw[key];
if (entries == null || entries.isEmpty) continue;
filters.add(
MediaFilter(filter: key, filterType: 'string', key: 'jellyfin:$key', title: titles[key] ?? key, type: 'filter'),
);
final sorted = List<String>.from(entries);
if (key == 'year') {
sorted.sort((a, b) => (int.tryParse(b) ?? 0).compareTo(int.tryParse(a) ?? 0));
} else {
sorted.sort();
}
values[key] = sorted.map((v) => MediaFilterValue(key: v, title: v)).toList();
}
return LibraryFilterResult(filters: filters, cachedValues: values);
}
Future<Map<String, dynamic>?> _safeFetchFilterPayload(String libraryId) async {
try {
final response = await _http.get(
'/Items/Filters',
queryParameters: {'userId': connection.userId, 'ParentId': libraryId},
timeout: _filtersTimeout,
);
throwIfHttpError(response);
final data = response.data;
return data is Map<String, dynamic> ? data : null;
} on MediaServerHttpException catch (e, st) {
if (!e.isTransient) rethrow;
appLogger.w('JellyfinClient: /Items/Filters timed out (filters disabled)', error: e, stackTrace: st);
return null;
}
}
/// Jellyfin has no `/sorts` listing endpoint, so this returns a hardcoded
/// list based on the broad sort set Streamyfin exposes. Keys remain
/// backend-neutral where Plezy already had saved preferences (`rating`,
/// `lastViewedAt`, …); [JellyfinLibraryQueryTranslator] maps them to
/// Jellyfin's `SortBy`/`SortOrder` at request time.
@override
Future<List<MediaSort>> fetchSortOptions(String libraryId, {String? libraryType}) async {
final sorts = [
MediaSort(key: 'title', descKey: 'title:desc', title: t.libraries.sortLabels.title, defaultDirection: 'asc'),
MediaSort(
key: 'rating',
descKey: 'rating:desc',
title: t.libraries.sortLabels.communityRating,
defaultDirection: 'desc',
),
MediaSort(
key: 'criticRating',
descKey: 'criticRating:desc',
title: t.libraries.sortLabels.criticRating,
defaultDirection: 'desc',
),
MediaSort(
key: 'addedAt',
descKey: 'addedAt:desc',
title: t.libraries.sortLabels.dateAdded,
defaultDirection: 'desc',
),
MediaSort(
key: 'lastViewedAt',
descKey: 'lastViewedAt:desc',
title: t.libraries.sortLabels.datePlayed,
defaultDirection: 'desc',
),
MediaSort(
key: 'viewCount',
descKey: 'viewCount:desc',
title: t.libraries.sortLabels.playCount,
defaultDirection: 'desc',
),
MediaSort(
key: 'productionYear',
descKey: 'productionYear:desc',
title: t.libraries.sortLabels.productionYear,
defaultDirection: 'desc',
),
MediaSort(
key: 'runtime',
descKey: 'runtime:desc',
title: t.libraries.sortLabels.runtime,
defaultDirection: 'desc',
),
MediaSort(
key: 'officialRating',
descKey: 'officialRating:desc',
title: t.libraries.sortLabels.officialRating,
defaultDirection: 'asc',
),
MediaSort(
key: 'originallyAvailableAt',
descKey: 'originallyAvailableAt:desc',
title: t.libraries.sortLabels.premiereDate,
defaultDirection: 'desc',
),
MediaSort(
key: 'startDate',
descKey: 'startDate:desc',
title: t.libraries.sortLabels.startDate,
defaultDirection: 'asc',
),
MediaSort(
key: 'airTime',
descKey: 'airTime:desc',
title: t.libraries.sortLabels.airTime,
defaultDirection: 'asc',
),
MediaSort(key: 'studio', descKey: 'studio:desc', title: t.libraries.sortLabels.studio, defaultDirection: 'asc'),
MediaSort(key: 'random', title: t.libraries.sortLabels.random, defaultDirection: 'asc'),
];
if (libraryType?.toLowerCase() == 'show') {
sorts.insert(
4,
MediaSort(
key: 'episode.addedAt',
descKey: 'episode.addedAt:desc',
title: t.libraries.sortLabels.lastEpisodeDateAdded,
defaultDirection: 'desc',
),
);
}
return sorts;
}
/// Jellyfin internalisation of the Plex-style filter map → [LibraryQuery]
/// translation. Routes through [fetchLibraryContent] so the
/// [JellyfinLibraryQueryTranslator] handles the actual `/Items` query.
///
/// [libraryKind] threads through so a "Shows" library returns Series rows
/// rather than the recursive episode expansion Jellyfin would otherwise
/// produce.
@override
Future<LibraryPage<MediaItem>> fetchLibraryPagedContent(
String libraryId, {
required LibraryQuery query,
MediaKind? libraryKind,
AbortController? abort,
}) async {
// [libraryKind] is only a fallback for library-default browsing. Explicit
// grouping types on [query] (seasons/episodes) must keep priority.
final effective = (query.kind == null && libraryKind != null && libraryKind != MediaKind.unknown)
? query.copyWith(kind: libraryKind)
: query;
return fetchLibraryContent(libraryId, effective, abort: abort);
}
/// Synthesised 27-letter alphabet — Jellyfin has no equivalent of Plex's
/// `/firstCharacter` endpoint, so the UI treats the bar as a name-prefix
/// filter instead of a scroll affordance. Each entry has `size: 1` so
/// the alpha-jump helper renders it without trying to do offset math.
@override
Future<List<LibraryFirstCharacter>> fetchFirstCharacters(String libraryId, {Map<String, String>? filters}) async {
const letters = [
'#',
'A',
'B',
'C',
'D',
'E',
'F',
'G',
'H',
'I',
'J',
'K',
'L',
'M',
'N',
'O',
'P',
'Q',
'R',
'S',
'T',
'U',
'V',
'W',
'X',
'Y',
'Z',
];
return [for (final l in letters) LibraryFirstCharacter(key: l, title: l, size: 1)];
}
/// Queue a metadata refresh for the library. Jellyfin treats a library
/// view as an item, so we POST to `/Items/{id}/Refresh`. `FullRefresh`
/// re-pulls metadata from configured providers; `replaceAllMetadata=false`
/// preserves user edits — same UX as Plex's `refresh?force=1`.
@override
Future<void> refreshLibraryMetadata(String libraryId) async {
final response = await _http.post(
'/Items/${_segment(libraryId)}/Refresh',
queryParameters: {
'metadataRefreshMode': 'FullRefresh',
'imageRefreshMode': 'Default',
'replaceAllMetadata': 'false',
'replaceAllImages': 'false',
},
);
throwIfHttpError(response);
}
/// Jellyfin has no single-round-trip equivalent of Plex's
/// `?includeOnDeck=1`. We approximate it for shows by chaining a second
/// request to `/Shows/NextUp` filtered by `seriesId`. NextUp's defaults
/// (`enableResumable=true`, `disableFirstEpisode=false`) match Plex
/// OnDeck semantics: returns the resume episode when one exists, or S1E1
/// when the user hasn't started. Movies and other kinds short-circuit.
@override
Future<({MediaItem? item, MediaItem? onDeckEpisode})> fetchItemWithOnDeck(String id) async {
final item = await fetchItem(id);
if (item == null || item.kind != MediaKind.show) {
return (item: item, onDeckEpisode: null);
}
final nextUp = await _safeFetchItemsArray('/Shows/NextUp', {
'seriesId': id,
'userId': connection.userId,
'Limit': '1',
'Fields': _episodeRowFields,
...jellyfinImageQueryParameters,
});
final onDeckEpisode = nextUp.isEmpty ? null : _mapItem(nextUp.first);
return (item: item, onDeckEpisode: onDeckEpisode);
}
@override
Future<MediaItem?> fetchItem(String id) async {
final endpoint = '/Users/${_segment(connection.userId)}/Items/${_segment(id)}';
// Contract:
// - 200 with parseable Map → MediaItem
// - 200 with non-Map body (HTML/text proxy page, empty) → null
// - 404 → null (item doesn't exist server-side)
// - 401/403/5xx → throw [MediaServerHttpException] so the UI can
// surface "auth required" / "server unavailable". Falling back to
// a cached row here would mislead the user into thinking they're
// still connected — explicit cache reads belong to the offline path.
// - Pure transport errors (no HTTP response) → fall back to cached row
// when present, otherwise rethrow.
if (isOfflineMode) {
final cached = await cache.get(ServerId(cacheServerId), endpoint);
if (cached is Map<String, dynamic>) return _mapItem(cached);
return null;
}
try {
final response = await _http.get(endpoint, queryParameters: {'Fields': _detailFields});
throwIfHttpError(response);
final data = response.data;
if (data is! Map<String, dynamic>) return null;
try {
await cache.put(ServerId(cacheServerId), endpoint, data);
} catch (e, st) {
appLogger.w('JellyfinClient.fetchItem cache write failed', error: e, stackTrace: st);
}
return _mapItem(data);
} on MediaServerHttpException catch (e) {
if (e.statusCode == 404) return null;
rethrow;
} catch (e) {
// Transport-layer failure: socket error, DNS, TLS, etc. Try cache.
appLogger.w('JellyfinClient.fetchItem network call failed', error: e);
try {
final cached = await cache.get(ServerId(cacheServerId), endpoint);
if (cached is Map<String, dynamic>) return _mapItem(cached);
} catch (cacheError, st) {
appLogger.w('JellyfinClient.fetchItem cache fallback failed', error: cacheError, stackTrace: st);
}
rethrow;
}
}
@override
Future<List<MediaItem>> fetchChildren(String parentId) => _fetchChildrenInternal(parentId);
/// [fetchChildren] plus incremental delivery: [onPage] receives the
/// accumulated items after each intermediate page of the generic
/// direct-children query — never for single-page listings, the final page,
/// or the single-shot seasons response.
Future<List<MediaItem>> _fetchChildrenInternal(
String parentId, {
void Function(List<MediaItem> itemsSoFar)? onPage,
}) async {
// Cache keys include userId so two users on the same server don't share
// per-user UserData (watched state) baked into the response.
final seasonsKey = '/Shows/$parentId/Seasons?userId=${connection.userId}';
final childrenKey = '/Items?ParentId=$parentId&userId=${connection.userId}';
if (isOfflineMode) {
final cachedSeasons = await cache.get(ServerId(cacheServerId), seasonsKey);
if (cachedSeasons != null) {
final items = _itemsArray(cachedSeasons);
if (items.isNotEmpty) return _mapItems(items);
}
final cachedChildren = await cache.get(ServerId(cacheServerId), childrenKey);
if (cachedChildren != null) {
return _mapItems(_itemsArray(cachedChildren));
}
return const [];
}
// For a series, the direct children are SEASONS (not the recursive
// episode expansion). Match Findroid: showsApi.getSeasons(seriesId)
// → /Shows/{seriesId}/Seasons. If the parent isn't a series this
// returns an empty list (or 404), so we fall through.
try {
final seasons = await _http.get(
'/Shows/${_segment(parentId)}/Seasons',
queryParameters: {'userId': connection.userId, 'Fields': _browseFields, ...jellyfinImageQueryParameters},
);
if (seasons.statusCode == 200) {
final data = seasons.data;
final items = _itemsArray(data);
if (items.isNotEmpty && data is Map<String, dynamic>) {
await cache.put(ServerId(cacheServerId), seasonsKey, data);
return _mapItems(items);
}
}
} on MediaServerHttpException {
// Not a series — fall through to the generic ParentId query.
}
// Generic direct-children query: works for season → episodes,
// collection → items, etc. Page it so large seasons/folders don't truncate
// at Jellyfin's per-request limit.
final allRaw = <Map<String, dynamic>>[];
var startIndex = 0;
int? totalRecordCount;
while (totalRecordCount == null || startIndex < totalRecordCount) {
final response = await _http.get(
'/Items',
queryParameters: {
'userId': connection.userId,
'ParentId': parentId,
'Fields': _episodeRowFields,
'StartIndex': '$startIndex',
'Limit': '$_childrenPageSize',
..._episodeOrderQueryParameters,
...jellyfinImageQueryParameters,
},
);
throwIfHttpError(response);
final data = response.data;
final page = _itemsArray(data);
allRaw.addAll(page);
if (data is Map<String, dynamic>) {
final rawTotal = data['TotalRecordCount'];
if (rawTotal is int) totalRecordCount = rawTotal;
}
if (page.isEmpty || page.length < _childrenPageSize) break;
startIndex += page.length;
if (onPage != null && (totalRecordCount == null || startIndex < totalRecordCount)) {
onPage(_mapItems(allRaw));
}
}
try {
await cache.put(ServerId(cacheServerId), childrenKey, {'Items': allRaw, 'TotalRecordCount': allRaw.length});
} catch (e, st) {
appLogger.w('JellyfinClient.fetchChildren cache write failed', error: e, stackTrace: st);
}
return _mapItems(allRaw);
}
@override
Future<LibraryPage<MediaItem>> fetchChildrenPage(
String parentId, {
int? start,
int? size,
AbortController? abort,
}) async {
final offset = start ?? 0;
final pageSize = size ?? _pagedListPageSize;
final seasonsKey = '/Shows/$parentId/Seasons?userId=${connection.userId}';
final childrenKey = '/Items?ParentId=$parentId&userId=${connection.userId}';
if (isOfflineMode) {
final cachedSeasons = await cache.get(ServerId(cacheServerId), seasonsKey);
if (cachedSeasons != null) {
final allSeasons = _mapItems(_itemsArray(cachedSeasons));
if (allSeasons.isNotEmpty) {
final safeOffset = offset.clamp(0, allSeasons.length).toInt();
final end = (safeOffset + pageSize).clamp(0, allSeasons.length).toInt();
return LibraryPage<MediaItem>(
items: allSeasons.sublist(safeOffset, end),
totalCount: allSeasons.length,
offset: offset,
);
}
}
final cached = await cache.get(ServerId(cacheServerId), childrenKey);
final all = cached == null ? const <MediaItem>[] : _mapItems(_itemsArray(cached));
final safeOffset = offset.clamp(0, all.length).toInt();
final end = (safeOffset + pageSize).clamp(0, all.length).toInt();
final pageItems = all.sublist(safeOffset, end);
return LibraryPage<MediaItem>(items: pageItems, totalCount: all.length, offset: offset);
}
try {
final seasons = await _http.get(
'/Shows/${_segment(parentId)}/Seasons',
queryParameters: {
'userId': connection.userId,
'StartIndex': offset.toString(),
'Limit': pageSize.toString(),
'EnableTotalRecordCount': 'true',
'Fields': _browseFields,
...jellyfinImageQueryParameters,
},
abort: abort,
);
if (seasons.statusCode == 200) {
final data = seasons.data;
final items = _itemsArray(data);
final rawTotal = data is Map<String, dynamic> ? data['TotalRecordCount'] : null;
if (items.isNotEmpty || (rawTotal is int && rawTotal > 0)) {
return _pagedItems(data, offset: offset, requestedSize: pageSize, map: _mapItems);
}
}
} on MediaServerHttpException {
// Not a series — fall through to the generic ParentId query.
}
final response = await _http.get(
'/Items',
queryParameters: {
'userId': connection.userId,
'ParentId': parentId,
'StartIndex': offset.toString(),
'Limit': pageSize.toString(),
'EnableTotalRecordCount': 'true',
'Fields': _episodeRowFields,
..._episodeOrderQueryParameters,
...jellyfinImageQueryParameters,
},
abort: abort,
);
throwIfHttpError(response);
return _pagedItems(response.data, offset: offset, requestedSize: pageSize, map: _mapItems);
}
Future<LibraryPage<MediaItem>> fetchSeasonEpisodesPage(
String seriesId,
String seasonId, {
int? start,
int? size,
AbortController? abort,
}) async {
if (isOfflineMode) {
return fetchChildrenPage(seasonId, start: start, size: size, abort: abort);
}
final offset = start ?? 0;
final pageSize = size ?? _pagedListPageSize;
final response = await _http.get(
'/Shows/${_segment(seriesId)}/Episodes',
queryParameters: {
'userId': connection.userId,
'SeasonId': seasonId,
'StartIndex': offset.toString(),
'Limit': pageSize.toString(),
'EnableTotalRecordCount': 'true',
'IsMissing': 'false',
'IsVirtualUnaired': 'false',
'Fields': _episodeRowFields,
...jellyfinImageQueryParameters,
},
abort: abort,
);
throwIfHttpError(response);
return _pagedItems(response.data, offset: offset, requestedSize: pageSize, map: _mapItems);
}
/// Jellyfin folder browsing mirrors Jellyfin Web/Findroid/Swiftfin: query
/// direct children of the library/folder with `Recursive=false`. This is
/// distinct from [fetchLibraryContent], which intentionally recurses through
/// a library to show metadata groupings like albums, artists, shows, etc.
@override
Future<List<MediaItem>> fetchLibraryFolders(String libraryId, {void Function(List<MediaItem> itemsSoFar)? onPage}) =>
_fetchFolderChildren(libraryId, onPage: onPage);
/// Contents of a Jellyfin folder. Kept separate from [fetchChildren] so the
/// folder tree can use direct-child semantics even for music libraries —
/// except for show/season rows, which surface as expandable folders in the
/// tree but whose children come from the metadata hierarchy.
///
/// [onPage] surfaces the accumulated items (server order) after each
/// intermediate page so callers can render while pagination continues; it is
/// never called for single-page listings or the final page (the returned
/// list covers those).
@override
Future<List<MediaItem>> fetchFolderChildren(
MediaItem folder, {
String? libraryId,
String? libraryTitle,
void Function(List<MediaItem> itemsSoFar)? onPage,
}) {
if (folder.kind == MediaKind.show || folder.kind == MediaKind.season) {
return _fetchChildrenInternal(folder.id, onPage: onPage);
}
return _fetchFolderChildren(folder.id, onPage: onPage);
}
/// Page through `/Items?ParentId=...&Recursive=false` with the given type
/// filter. [onRawPage] receives the accumulated rows after each intermediate
/// page (never for single-page listings or the final page).
Future<List<Map<String, dynamic>>> _pageFolderQuery(
String parentId,
Map<String, String> typeParams,
String fields, {
void Function(List<Map<String, dynamic>> rowsSoFar)? onRawPage,
}) async {
final out = <Map<String, dynamic>>[];
var startIndex = 0;
int? totalRecordCount;
while (totalRecordCount == null || startIndex < totalRecordCount) {
final response = await _http.get(
'/Items',
queryParameters: {
'userId': connection.userId,
'ParentId': parentId,
'Recursive': 'false',
'StartIndex': '$startIndex',
'Limit': '$_childrenPageSize',
'EnableTotalRecordCount': 'true',
'SortBy': 'SortName',
'SortOrder': 'Ascending',
'Fields': fields,
...typeParams,
...jellyfinImageQueryParameters,
},
);
throwIfHttpError(response);
final data = response.data;
final page = _itemsArray(data);
out.addAll(page);
if (data is Map<String, dynamic>) {
final rawTotal = data['TotalRecordCount'];
if (rawTotal is int) totalRecordCount = rawTotal;
}
if (page.isEmpty || page.length < _childrenPageSize) break;
startIndex += page.length;
if (onRawPage != null && (totalRecordCount == null || startIndex < totalRecordCount)) {
onRawPage(out);
}
}
return out;
}
Future<List<MediaItem>> _fetchFolderChildren(
String parentId, {
void Function(List<MediaItem> itemsSoFar)? onPage,
}) async {
final cacheKey = '/Items?ParentId=$parentId&Recursive=false&userId=${connection.userId}';
if (isOfflineMode) {
final cached = await cache.get(ServerId(cacheServerId), cacheKey);
return cached == null ? const [] : _mapItems(_itemsArray(cached));
}
// Two parallel queries split by type: attaching UserData to a folder dto
// makes Jellyfin compute a recursive unplayed count PER FOLDER (measured
// ~100-200ms each on a real 10.11 server — the dominant cost of folder
// browsing), and the tree renders no watch state on plain folder rows.
// Media children keep UserData: leaves resolve it with a cheap lookup and
// series need it for the unwatched badge. Folders-then-media matches the
// folders-first ordering the final sort below produces.
List<Map<String, dynamic>>? folderRows;
final foldersFuture = _pageFolderQuery(parentId, {
'IncludeItemTypes': 'Folder,CollectionFolder',
'EnableUserData': 'false',
}, _folderRowFields).then((rows) => folderRows = rows);
final mediaFuture = _pageFolderQuery(
parentId,
{'ExcludeItemTypes': 'Folder,CollectionFolder'},
_folderBrowseFields,
onRawPage: onPage == null
? null
: (rowsSoFar) {
// Only emit once the (typically single, fast) folders query has
// landed so partial snapshots never reorder later.
final folders = folderRows;
if (folders == null) return;
onPage(List<MediaItem>.unmodifiable(_mapItems([...folders, ...rowsSoFar])));
},
);
final results = await Future.wait([foldersFuture, mediaFuture]);
final allRaw = <Map<String, dynamic>>[...results[0], ...results[1]];
allRaw.sort((a, b) {
final folderRank = (_isJellyfinFolderDto(a) ? 0 : 1).compareTo(_isJellyfinFolderDto(b) ? 0 : 1);
if (folderRank != 0) return folderRank;
return _jellyfinFolderSortName(a).compareTo(_jellyfinFolderSortName(b));
});
try {
await cache.put(ServerId(cacheServerId), cacheKey, {'Items': allRaw, 'TotalRecordCount': allRaw.length});
} catch (e, st) {
appLogger.w('JellyfinClient.fetchFolderChildren cache write failed', error: e, stackTrace: st);
}
return _mapItems(allRaw);
}
/// All directly-playable descendants of [parentId] (Movies + Episodes +
/// Audio tracks), recursively expanded. Used by the playback launcher so a
/// collection containing a Series plays its episodes instead of the
/// unplayable Series entry, a playlist mixing both comes through the same
/// path, and an album/artist/audio-playlist expands to its tracks.
/// Direct browsing keeps using [fetchChildren] / [fetchPlaylistItems]
/// since those preserve the container shape (Series rows, PlaylistItemId).
///
@override
Future<List<MediaItem>> fetchPlayableDescendants(String parentId, {AbortController? abort}) async {
final items = await _fetchAllPlayableDescendants(
parentId,
includeItemTypes: _playableDescendantTypes,
abort: abort,
);
abort?.throwIfAborted();
if (items.isNotEmpty) return items;
// Jellyfin links music to artists via *tags*, not the folder tree — a
// MusicArtist is usually not its tracks' ancestor, so the recursive
// `ParentId` query above comes back empty for tag-only artists (folder-
// backed artists resolve on the first query and never reach this).
// Retry once by album-artist credit, tracks only.
return _fetchAllPlayableDescendants(parentId, includeItemTypes: 'Audio', byAlbumArtist: true, abort: abort);
}
/// Playable video descendants for a folder browse row. This includes
/// Jellyfin's generic `Video` / `MusicVideo` kinds for home-video libraries,
/// but deliberately excludes `Audio` so folder playback never starts music.
Future<List<MediaItem>> fetchPlayableFolderDescendants(String parentId, {AbortController? abort}) {
return _fetchAllPlayableDescendants(parentId, includeItemTypes: _playableFolderDescendantTypes, abort: abort);
}
Future<List<MediaItem>> _fetchAllPlayableDescendants(
String parentId, {
required String includeItemTypes,
bool byAlbumArtist = false,
AbortController? abort,
}) {
return drainPages<MediaItem>(
(start, size) => _fetchPlayableDescendantsPage(
parentId,
start: start,
size: size,
abort: abort,
includeItemTypes: includeItemTypes,
byAlbumArtist: byAlbumArtist,
),
pageSize: _pagedListPageSize,
abort: abort,
);
}
@override
Future<LibraryPage<MediaItem>> fetchPlayableDescendantsPage(
String parentId, {
int? start,
int? size,
AbortController? abort,
}) {
return _fetchPlayableDescendantsPage(
parentId,
start: start,
size: size,
abort: abort,
includeItemTypes: _playableDescendantTypes,
);
}
Future<LibraryPage<MediaItem>> _fetchPlayableDescendantsPage(
String parentId, {
int? start,
int? size,
AbortController? abort,
required String includeItemTypes,
bool byAlbumArtist = false,
}) async {
final offset = start ?? 0;
final pageSize = size ?? _pagedListPageSize;
final response = await _http.get(
'/Items',
queryParameters: {
'userId': connection.userId,
// Tag-linked music artists have no folder descendants; the retry in
// [fetchPlayableDescendants] expands them by album-artist credit.
if (byAlbumArtist) 'AlbumArtistIds': parentId else 'ParentId': parentId,
'Recursive': 'true',
'IncludeItemTypes': includeItemTypes,
'StartIndex': offset.toString(),
'Limit': pageSize.toString(),
'Fields': _episodeRowFields,
...jellyfinImageQueryParameters,
},
abort: abort,
);
throwIfHttpError(response);
return _pagedItems(response.data, offset: offset, requestedSize: pageSize, map: _mapItems);
}
/// All episodes of a series in the app's **aired watch order** — primarily by
/// air date, so Specials interleave between regular episodes the way Plex's
/// own play queue does — so the client-side next/previous queue matches
/// streaming, downloads, and offline playback (#1416/#1414). The server sort
/// ([_episodeOrderQueryParameters]) only keeps paging stable;
/// [sortEpisodesByWatchOrder] then orders the assembled list, leaving a single
/// definition of "episode order".
///
/// Uses [_queueFields] (`UserData` + `PremiereDate`) instead of the full
/// browse field set so the response stays small even for shows with thousands
/// of episodes.
///
/// Paged in [_episodeQueuePageSize] chunks so long-running shows still get
/// a complete client-side next/previous queue without one huge response.
@override
Future<List<MediaItem>?> fetchClientSideEpisodeQueue(String seriesId, {AbortController? abort}) async {
final all = <MediaItem>[];
var startIndex = 0;
int? totalRecordCount;
while (totalRecordCount == null || startIndex < totalRecordCount) {
abort?.throwIfAborted();
final response = await _http.get(
'/Shows/${_segment(seriesId)}/Episodes',
queryParameters: {
'userId': connection.userId,
'Fields': _queueFields,
'StartIndex': '$startIndex',
'Limit': '$_episodeQueuePageSize',
'IsMissing': 'false',
'IsVirtualUnaired': 'false',
..._episodeOrderQueryParameters,
...jellyfinImageQueryParameters,
},
abort: abort,
);
abort?.throwIfAborted();
throwIfHttpError(response);
final data = response.data;
final page = _mapItems(_itemsArray(data));
abort?.throwIfAborted();
all.addAll(page);
if (data is Map<String, dynamic>) {
final rawTotal = data['TotalRecordCount'];
if (rawTotal is int) totalRecordCount = rawTotal;
}
if (page.length < _episodeQueuePageSize) break;
startIndex += page.length;
}
abort?.throwIfAborted();
// Server lists Specials first (ParentIndexNumber asc); reorder into the
// shared aired watch order so online next/prev matches offline + downloads.
sortEpisodesByWatchOrder(all);
return all;
}
@override
Future<List<MediaItem>> searchItems(String query, {int limit = 100}) async {
// Artists come from the dedicated /Artists endpoint: `/Items?SearchTerm=`
// only matches folder-derived MusicArtist rows (under folder names), so
// tag-only artists would never appear in search. The artists leg is
// best-effort — a music-endpoint hiccup shouldn't sink video search.
final results = await Future.wait([
_fetchItemsArray('/Items', {
'userId': connection.userId,
'SearchTerm': query,
'Recursive': 'true',
'Limit': limit.toString(),
'IncludeItemTypes': 'Movie,Series,Episode,MusicAlbum,Audio',
'Fields': _browseFields,
...jellyfinImageQueryParameters,
}),
_safeFetchItemsArray('/Artists', {
'userId': connection.userId,
'searchTerm': query,
'Limit': limit.toString(),
...jellyfinImageQueryParameters,
}),
]);
return _mapItems([...results.first, ...results[1]]);
}
/// Jellyfin removed `anyProviderIdEquals`, so the reverse lookup is a
/// title search verified against each candidate's inline `ProviderIds` —
/// exact-id verification, so localized-title misses are possible but a
/// wrong item can never match.
///
/// When [year] is known, a ±1 `years=` window (comma-OR, verified on JF
/// 10.11) is applied first so short/common titles keep the true match
/// inside the 20-item response; a second unfiltered attempt covers items
/// with missing or off-window year metadata.
@override
Future<MediaItem?> findByExternalIds(ExternalIds ids, {required MediaKind kind, String? title, int? year}) async {
final itemType = switch (kind) {
MediaKind.movie => 'Movie',
MediaKind.show => 'Series',
_ => null,
};
if (itemType == null || !ids.hasAny || title == null || title.isEmpty) return null;
Future<MediaItem?> attempt(String? years) async {
final candidates = await _fetchItemsArray('/Items', {
'userId': connection.userId,
'SearchTerm': title,
'Recursive': 'true',
'Limit': '20',
'IncludeItemTypes': itemType,
'Fields': 'ProviderIds,$_browseFields',
'years': ?years,
...jellyfinImageQueryParameters,
});
final match = ExternalIds.jellyfinCandidateMatching(candidates, ids);
if (match == null) return null;
final item = _mapItems([match]).firstOrNull;
if (item == null) return null;
return _withLibraryFromAncestors(item);
}
if (year != null) {
final match = await attempt('${year - 1},$year,${year + 1}');
if (match != null) return match;
}
return attempt(null);
}
/// Best-effort library stamp for items found outside a library context
/// (the search-based reverse lookup): `/Items/{id}/Ancestors` names the
/// owning CollectionFolder. One extra request per match (memoized with the
/// match by the session-level matcher cache); failures return the item
/// unstamped.
Future<MediaItem> _withLibraryFromAncestors(MediaItem item) async {
try {
final response = await _http.get(
'/Items/${_segment(item.id)}/Ancestors',
queryParameters: {'userId': connection.userId},
);
throwIfHttpError(response);
final data = response.data;
if (data is! List) return item;
for (final ancestor in data.whereType<Map<String, dynamic>>()) {
if (ancestor['Type'] == 'CollectionFolder') {
return item.copyWith(libraryId: ancestor['Id'] as String?, libraryTitle: ancestor['Name'] as String?);
}
}
} catch (e) {
appLogger.d('Jellyfin ancestors lookup failed for ${item.id}', error: e);
}
return item;
}
@override
Future<List<MediaItem>> fetchPersonMedia(String personId) => drainPages<MediaItem>(
(start, size) => fetchPersonMediaPage(personId, start: start, size: size),
pageSize: _pagedListPageSize,
);
@override
Future<LibraryPage<MediaItem>> fetchPersonMediaPage(
String personId, {
int? start,
int? size,
AbortController? abort,
}) async {
final offset = start ?? 0;
final pageSize = size ?? _pagedListPageSize;
final response = await _http.get(
'/Items',
queryParameters: {
'userId': connection.userId,
'PersonIds': personId,
'IncludeItemTypes': 'Movie,Series',
'Recursive': 'true',
'StartIndex': offset.toString(),
'Limit': pageSize.toString(),
'Fields': _browseFields,
'SortBy': 'PremiereDate,ProductionYear,SortName',
'SortOrder': 'Descending,Descending,Ascending',
'CollapseBoxSetItems': 'false',
...jellyfinImageQueryParameters,
},
abort: abort,
);
throwIfHttpError(response);
return _pagedItems(response.data, offset: offset, requestedSize: pageSize, map: _mapItems);
}
@override
Future<List<MediaItem>> fetchContinueWatching({int? count = 20}) async {
final results = await Future.wait([
_fetchItemsArray('/UserItems/Resume', {
'userId': connection.userId,
'Limit': ?count?.toString(),
'Fields': _browseFields,
'MediaTypes': 'Video',
'Recursive': 'true',
'EnableTotalRecordCount': 'false',
...jellyfinImageQueryParameters,
}, retry: _continueWatchingRetry),
_safeFetchItemsArray('/Shows/NextUp', {
'userId': connection.userId,
'Limit': ?count?.toString(),
'Fields': _browseFields,
'EnableResumable': 'false',
'EnableTotalRecordCount': 'false',
...jellyfinImageQueryParameters,
}, retry: _continueWatchingRetry),
]);
return _mergeContinueWatchingAndNextUp(
resume: _mapItems(results.first),
nextUp: await _attachSeriesLastPlayed(_mapItems(results[1])),
limit: count,
);
}
@override
Future<List<MediaHub>> fetchGlobalHubs({int limit = defaultHubPreviewLimit, bool includePlaybackHubs = true}) async {
// Jellyfin doesn't expose a single "hubs" endpoint, so we synthesise the
// home rows from Latest plus optional playback rows. The richer Plex Discover surface
// is intentionally left untranslated — see ServerCapabilities.richHubs.
final latestFuture = _safeFetchItemsArray('/Users/${_segment(connection.userId)}/Items/Latest', {
'Limit': limit.toString(),
'Fields': _browseFields,
'IncludeItemTypes': 'Movie,Series,Episode',
...jellyfinImageQueryParameters,
}, retry: _homeHubRetry);
if (!includePlaybackHubs) {
final latest = await latestFuture;
return [
JellyfinMappers.syntheticHub(
mapItem: _mapItem,
identifier: 'home.recent',
title: t.discover.recentlyAdded,
type: 'mixed',
items: latest,
previewLimit: limit,
serverId: serverId,
serverName: serverName,
),
].where((h) => h.items.isNotEmpty).toList();
}
final results = await Future.wait([
latestFuture,
_safeFetchItemsArray('/UserItems/Resume', {
'userId': connection.userId,
'Limit': limit.toString(),
'Fields': _browseFields,
'MediaTypes': 'Video',
'Recursive': 'true',
'EnableTotalRecordCount': 'false',
...jellyfinImageQueryParameters,
}, retry: _homeHubRetry),
_safeFetchItemsArray('/Shows/NextUp', {
'userId': connection.userId,
'Limit': limit.toString(),
'Fields': _browseFields,
'EnableResumable': 'false',
'EnableTotalRecordCount': 'false',
...jellyfinImageQueryParameters,
}, retry: _homeHubRetry),
]);
return [
JellyfinMappers.syntheticHub(
mapItem: _mapItem,
identifier: 'home.continue',
title: t.discover.continueWatching,
type: 'mixed',
items: results[1],
previewLimit: limit,
serverId: serverId,
serverName: serverName,
),
JellyfinMappers.syntheticHub(
mapItem: _mapItem,
identifier: 'home.nextup',
title: t.discover.nextUp,
type: 'episode',
items: results[2],
previewLimit: limit,
serverId: serverId,
serverName: serverName,
),
JellyfinMappers.syntheticHub(
mapItem: _mapItem,
identifier: 'home.recent',
title: t.discover.recentlyAdded,
type: 'mixed',
items: results.first,
previewLimit: limit,
serverId: serverId,
serverName: serverName,
),
].where((h) => h.items.isNotEmpty).toList();
}
@override
Future<List<MediaHub>> fetchLibraryHubs(
String libraryId, {
required String libraryName,
int limit = defaultHubPreviewLimit,
bool includePlaybackHubs = true,
MediaKind? libraryKind,
}) async {
// Music libraries get their own hub set. Home passes
// includePlaybackHubs=false because it already renders the app-level
// playback shelf; in that mode only fetch Latest Albums. Recently Played
// and Most Played remain available on the library's Recommended tab.
// Branched before the Latest request below fires (futures are eager):
// music needs the slim [_musicAlbumRowFields], not [_browseFields].
if (libraryKind == MediaKind.artist) {
return _fetchMusicLibraryHubs(
libraryId,
libraryName: libraryName,
limit: limit,
includePlaybackHubs: includePlaybackHubs,
);
}
// Mirror the Jellyfin web client's per-library "Suggestions" tab:
// Continue Watching + Next Up (TV libraries) + Recently Added.
//
// Issued in parallel so the recommended tab loads in one round-trip.
// When the caller knows the library kind, skip NextUp for movie libraries;
// Jellyfin can otherwise spend time scanning TV state only to return [].
final latestFuture = _safeFetchItemsArray('/Users/${_segment(connection.userId)}/Items/Latest', {
'Limit': limit.toString(),
'ParentId': libraryId,
'Fields': _browseFields,
...jellyfinImageQueryParameters,
}, retry: _libraryHubRetry);
if (!includePlaybackHubs) {
final latest = await latestFuture;
return [
JellyfinMappers.syntheticHub(
mapItem: _mapItem,
identifier: 'library.$libraryId.recent',
title: t.discover.recentlyAddedIn(library: libraryName),
type: 'mixed',
items: latest,
previewLimit: limit,
serverId: serverId,
serverName: serverName,
),
].where((h) => h.items.isNotEmpty).toList();
}
final includeNextUp = libraryKind == null || libraryKind == MediaKind.show;
final results = await Future.wait([
latestFuture,
_safeFetchItemsArray('/UserItems/Resume', {
'userId': connection.userId,
'ParentId': libraryId,
'Limit': limit.toString(),
'Fields': _browseFields,
'MediaTypes': 'Video',
'Recursive': 'true',
'EnableTotalRecordCount': 'false',
...jellyfinImageQueryParameters,
}, retry: _libraryHubRetry),
includeNextUp
? _safeFetchItemsArray('/Shows/NextUp', {
'userId': connection.userId,
'ParentId': libraryId,
'Limit': limit.toString(),
'Fields': _browseFields,
'EnableResumable': 'false',
'EnableTotalRecordCount': 'false',
...jellyfinImageQueryParameters,
}, retry: _libraryHubRetry)
: Future.value(const <Map<String, dynamic>>[]),
]);
return [
JellyfinMappers.syntheticHub(
mapItem: _mapItem,
identifier: 'library.$libraryId.continue',
title: t.discover.continueWatchingIn(library: libraryName),
type: 'mixed',
items: results[1],
previewLimit: limit,
serverId: serverId,
serverName: serverName,
),
JellyfinMappers.syntheticHub(
mapItem: _mapItem,
identifier: 'library.$libraryId.nextup',
title: t.discover.nextUpIn(library: libraryName),
type: 'episode',
items: results[2],
previewLimit: limit,
serverId: serverId,
serverName: serverName,
),
JellyfinMappers.syntheticHub(
mapItem: _mapItem,
identifier: 'library.$libraryId.recent',
title: t.discover.recentlyAddedIn(library: libraryName),
type: 'mixed',
items: results.first,
previewLimit: limit,
serverId: serverId,
serverName: serverName,
),
].where((h) => h.items.isNotEmpty).toList();
}
/// Music-library hub set, mirroring the Jellyfin web client's music
/// "Suggestions" tab. `/Users/{userId}/Items/Latest` natively groups a
/// music library's new items into albums; the row carries the
/// `latestalbums` identifier so [fetchMoreHubItemsPage] expands it with
/// the same slim album fields. The played rows filter `IsPlayed` so
/// unplayed tracks (PlayCount 0) never pad them.
Future<List<MediaHub>> _fetchMusicLibraryHubs(
String libraryId, {
required String libraryName,
required int limit,
required bool includePlaybackHubs,
}) async {
final latestFuture = _safeFetchItemsArray('/Users/${_segment(connection.userId)}/Items/Latest', {
'Limit': limit.toString(),
'ParentId': libraryId,
'Fields': _musicAlbumRowFields,
'EnableUserData': 'false',
...jellyfinImageQueryParameters,
}, retry: _libraryHubRetry);
MediaHub latestAlbumsHub(List<Map<String, dynamic>> items) => JellyfinMappers.syntheticHub(
mapItem: _mapItem,
identifier: 'library.$libraryId.latestalbums',
title: t.discover.latestAlbumsIn(library: libraryName),
type: 'album',
items: items,
previewLimit: limit,
serverId: serverId,
serverName: serverName,
);
if (!includePlaybackHubs) {
return [latestAlbumsHub(await latestFuture)].where((hub) => hub.items.isNotEmpty).toList();
}
final playedParams = <String, String>{
'userId': connection.userId,
'ParentId': libraryId,
'IncludeItemTypes': 'Audio',
'Recursive': 'true',
'Filters': 'IsPlayed',
'SortOrder': 'Descending',
'Limit': limit.toString(),
'Fields': _musicTrackRowFields,
'EnableTotalRecordCount': 'false',
...jellyfinImageQueryParameters,
};
final results = await Future.wait([
latestFuture,
_safeFetchItemsArray('/Items', {...playedParams, 'SortBy': 'DatePlayed'}, retry: _libraryHubRetry),
_safeFetchItemsArray('/Items', {...playedParams, 'SortBy': 'PlayCount'}, retry: _libraryHubRetry),
]);
return [
latestAlbumsHub(results.first),
JellyfinMappers.syntheticHub(
mapItem: _mapItem,
identifier: 'library.$libraryId.recentlyplayed',
title: t.discover.recentlyPlayedIn(library: libraryName),
type: 'track',
items: results[1],
previewLimit: limit,
serverId: serverId,
serverName: serverName,
),
JellyfinMappers.syntheticHub(
mapItem: _mapItem,
identifier: 'library.$libraryId.mostplayed',
title: t.discover.mostPlayedIn(library: libraryName),
type: 'track',
items: results[2],
previewLimit: limit,
serverId: serverId,
serverName: serverName,
),
].where((h) => h.items.isNotEmpty).toList();
}
/// Expand a synthetic hub so the detail screen can render beyond its
/// preview. Recently Added uses the pageable Items endpoint with the same
/// date-created ordering and media types as Jellyfin's Latest query.
/// Latest Albums retains the grouped, single-page Latest endpoint.
/// Continue Watching, Next Up, Recently Played, and Most Played use their
/// native pageable endpoints. Unknown ids return an empty list.
@override
Future<List<MediaItem>> fetchMoreHubItems(String hubId, {int? limit}) async {
try {
final page = await fetchMoreHubItemsPage(hubId, start: 0, size: limit ?? 50);
return page.items;
} catch (e, st) {
// A cancelled request says nothing about the hub's contents — let it
// propagate so the caller classifies the fetch as disrupted, not empty.
if (e is MediaServerHttpException && e.isCancellation) rethrow;
appLogger.w('JellyfinClient: failed to fetch hub items for $hubId (treating as empty)', error: e, stackTrace: st);
return const [];
}
}
@override
Future<LibraryPage<MediaItem>> fetchMoreHubItemsPage(
String hubId, {
int? start,
int? size,
AbortController? abort,
}) async {
final offset = start ?? 0;
final pageSize = size ?? 50;
final effectiveLimit = pageSize.toString();
String? parentId;
if (hubId.startsWith('library.')) {
final rest = hubId.substring('library.'.length);
final dot = rest.lastIndexOf('.');
if (dot > 0) parentId = rest.substring(0, dot);
}
final tail = hubId.split('.').last;
switch (tail) {
case 'recent':
return _safeFetchMediaPage(
'/Items',
{
'userId': connection.userId,
'ParentId': ?parentId,
'Recursive': 'true',
'StartIndex': offset.toString(),
'Limit': effectiveLimit,
'EnableTotalRecordCount': 'true',
'IncludeItemTypes': 'Movie,Series,Episode,Video,MusicVideo,Photo',
'SortBy': 'DateCreated,SortName,ProductionYear',
'SortOrder': 'Descending,Descending,Descending',
'Fields': _browseFields,
...jellyfinImageQueryParameters,
},
offset: offset,
requestedSize: pageSize,
abort: abort,
);
case 'latestalbums':
// Latest groups music into albums but does not expose StartIndex.
if (offset > 0) return LibraryPage<MediaItem>(items: const [], totalCount: offset, offset: offset);
return _safeFetchMediaPage(
'/Users/${_segment(connection.userId)}/Items/Latest',
{
'Limit': effectiveLimit,
'Fields': _musicAlbumRowFields,
'EnableUserData': 'false',
'ParentId': ?parentId,
...jellyfinImageQueryParameters,
},
offset: offset,
requestedSize: pageSize,
singlePage: true,
abort: abort,
);
case 'continue':
return _safeFetchMediaPage(
'/UserItems/Resume',
{
'userId': connection.userId,
'StartIndex': offset.toString(),
'Limit': effectiveLimit,
'Fields': _browseFields,
'Recursive': 'true',
'EnableTotalRecordCount': 'true',
if (parentId != null) 'ParentId': parentId else 'MediaTypes': 'Video',
...jellyfinImageQueryParameters,
},
offset: offset,
requestedSize: pageSize,
abort: abort,
);
case 'nextup':
return _safeFetchMediaPage(
'/Shows/NextUp',
{
'userId': connection.userId,
'StartIndex': offset.toString(),
'Limit': effectiveLimit,
'Fields': _browseFields,
'ParentId': ?parentId,
'EnableResumable': 'false',
'EnableTotalRecordCount': 'true',
...jellyfinImageQueryParameters,
},
offset: offset,
requestedSize: pageSize,
abort: abort,
);
case 'recentlyplayed':
case 'mostplayed':
return _safeFetchMediaPage(
'/Items',
{
'userId': connection.userId,
'ParentId': ?parentId,
'IncludeItemTypes': 'Audio',
'Recursive': 'true',
'Filters': 'IsPlayed',
'SortBy': tail == 'mostplayed' ? 'PlayCount' : 'DatePlayed',
'SortOrder': 'Descending',
'StartIndex': offset.toString(),
'Limit': effectiveLimit,
'Fields': _musicTrackRowFields,
'EnableTotalRecordCount': 'true',
...jellyfinImageQueryParameters,
},
offset: offset,
requestedSize: pageSize,
abort: abort,
);
default:
return LibraryPage<MediaItem>(items: const [], totalCount: 0, offset: offset);
}
}
Future<LibraryPage<MediaItem>> _safeFetchMediaPage(
String path,
Map<String, dynamic> queryParameters, {
required int offset,
required int requestedSize,
bool singlePage = false,
AbortController? abort,
}) async {
try {
final response = await _http.get(path, queryParameters: queryParameters, abort: abort);
throwIfHttpError(response);
return _pagedItems(
response.data,
offset: offset,
requestedSize: requestedSize,
singlePage: singlePage,
map: _mapItems,
);
} catch (e, st) {
appLogger.w('JellyfinClient: $path failed', error: e, stackTrace: st);
rethrow;
}
}
@override
Future<List<MediaHub>> fetchRelatedHubs(String id, {int count = 10}) async {
final response = await _http.get(
'/Items/${_segment(id)}/Similar',
queryParameters: {
'userId': connection.userId,
'Limit': count.toString(),
'Fields': _browseFields,
...jellyfinImageQueryParameters,
},
);
throwIfHttpError(response);
return [
JellyfinMappers.syntheticHub(
mapItem: _mapItem,
identifier: 'item.$id.similar',
title: t.discover.moreLikeThis,
type: 'mixed',
items: _itemsArray(response.data),
serverId: serverId,
serverName: serverName,
),
].where((h) => h.items.isNotEmpty).toList();
}
/// Jellyfin exposes local trailers separately from special features. Combine
/// both into Plezy's existing extras row, but keep remote/YouTube trailers
/// out of scope because they are external URLs, not playable Jellyfin items.
@override
Future<List<MediaItem>> fetchExtras(String id) async {
if (isOfflineMode) return const [];
final results = await Future.wait([
_safeFetchItemsArray('/Items/${_segment(id)}/LocalTrailers', {
'userId': connection.userId,
...jellyfinImageQueryParameters,
}),
_safeFetchItemsArray('/Items/${_segment(id)}/SpecialFeatures', {
'userId': connection.userId,
...jellyfinImageQueryParameters,
}),
]);
return _playableExtrasFromRaw(results.expand((items) => items));
}
List<MediaItem> _playableExtrasFromRaw(Iterable<Map<String, dynamic>> rawExtras) {
final extras = <MediaItem>[];
final seenIds = <String>{};
for (final raw in rawExtras) {
final item = _mapItem(raw);
if (item == null || !item.kind.isVideo || !seenIds.add(item.id)) continue;
extras.add(item);
}
return extras;
}
/// Jellyfin's `/Shows/NextUp` returns the *next* (unwatched) episode for each
/// series, so those rows have no `LastPlayedDate` of their own and a Series DTO
/// doesn't expose an aggregated one. To let the Continue Watching shelf
/// interleave Next Up with resume items by recency, stamp each Next Up episode
/// with its series' last-watched date, read from the most recently played
/// episode of that series.
Future<List<MediaItem>> _attachSeriesLastPlayed(List<MediaItem> nextUp) async {
final pendingSeriesIds = <String>{
for (final item in nextUp)
if (item.kind == MediaKind.episode && item.lastViewedAt == null && item.grandparentId != null)
item.grandparentId!,
};
if (pendingSeriesIds.isEmpty) return nextUp;
// One lightweight pass over the most recently played episodes server-wide,
// ordered DatePlayed-descending so the first time we see a series is its
// newest play. We deliberately do NOT filter on the Played flag: Jellyfin's
// own NextUp ranks series by MAX(LastPlayedDate) across every episode, and an
// episode can carry a LastPlayedDate while Played==false (started but not
// finished, or later marked unwatched). Filtering to IsPlayed would miss
// those and leave such series un-dated. Null dates sort last, so the limit
// still captures the genuinely-recent episodes; a series whose last play
// falls beyond the window keeps a null date and degrades to its addedAt in
// the sort — it would rank near the bottom anyway, being least-recent.
final rawPlayed = await _safeFetchItemsArray('/Items', {
'userId': connection.userId,
'IncludeItemTypes': 'Episode',
'Recursive': 'true',
'SortBy': 'DatePlayed',
'SortOrder': 'Descending',
'Fields': _queueFields,
'Limit': _continueWatchingSeriesLookback.toString(),
'EnableImages': 'false',
'EnableTotalRecordCount': 'false',
});
final lastPlayedBySeries = <String, int>{};
for (final episode in _mapItems(rawPlayed)) {
final seriesId = episode.grandparentId;
final playedAt = episode.lastViewedAt;
if (seriesId == null || playedAt == null) continue;
if (!pendingSeriesIds.contains(seriesId)) continue;
lastPlayedBySeries.putIfAbsent(seriesId, () => playedAt);
}
if (lastPlayedBySeries.isEmpty) return nextUp;
return [
for (final item in nextUp)
if (item.lastViewedAt == null && lastPlayedBySeries[item.grandparentId] != null)
item.copyWith(lastViewedAt: lastPlayedBySeries[item.grandparentId])
else
item,
];
}
/// Merge Jellyfin's two continue-watching sources into one recency-ordered
/// shelf. Resume items are deduped first so an in-progress episode wins over
/// the same series' Next Up entry, then the combined list is ordered by
/// [MediaItem.recencySortKey] (matching `DataAggregationService`) before the
/// limit is applied — so a recent Next Up episode is never starved by a long
/// run of older resume items.
List<MediaItem> _mergeContinueWatchingAndNextUp({
required List<MediaItem> resume,
required List<MediaItem> nextUp,
required int? limit,
}) {
if (limit != null && limit <= 0) return const [];
final merged = <MediaItem>[];
final seenIds = <String>{};
final seenSeriesIds = <String>{};
// Resume first: first-wins dedup makes an in-progress episode beat the same
// series' Next Up entry.
for (final item in [...resume, ...nextUp]) {
if (!seenIds.add(item.id)) continue;
final seriesId = item.kind == MediaKind.episode ? item.grandparentId : null;
if (seriesId != null && !seenSeriesIds.add(seriesId)) continue;
merged.add(item);
}
// Stable sort by recency: Dart's List.sort isn't stable, so break ties on the
// insertion index to keep ordering deterministic across refreshes.
final ordered = [for (var i = 0; i < merged.length; i++) (item: merged[i], index: i)];
ordered.sort((a, b) {
final byRecency = b.item.recencySortKey.compareTo(a.item.recencySortKey);
return byRecency != 0 ? byRecency : a.index.compareTo(b.index);
});
final result = [for (final entry in ordered) entry.item];
if (limit != null && result.length > limit) return result.sublist(0, limit);
return result;
}
/// GET [path], optionally under a hub-surface transport policy ([retry]):
/// bounded transient retries with per-attempt timeouts and **no endpoint
/// failover** — a slow hub row must not move the whole client off an
/// otherwise working endpoint (same policy as Plex's three hub fetches;
/// see [retryTransientMediaServerCall] / [FailoverHttpClient]).
Future<MediaServerResponse> _getItemsResponse(
String path,
Map<String, dynamic> queryParameters,
_HubRetryPolicy? retry,
) {
if (retry == null) return _http.get(path, queryParameters: queryParameters);
return retryTransientMediaServerCall(
operation: retry.operation,
attemptTimeouts: retry.attemptTimeouts,
call: (timeout, abort) => _http.get(
path,
queryParameters: queryParameters,
timeout: timeout,
abort: abort,
allowEndpointFailover: false,
),
);
}
Future<List<Map<String, dynamic>>> _fetchItemsArray(
String path,
Map<String, dynamic> queryParameters, {
_HubRetryPolicy? retry,
}) async {
final response = await _getItemsResponse(path, queryParameters, retry);
throwIfHttpError(response);
return _itemsArray(response.data);
}
Future<List<Map<String, dynamic>>> _safeFetchItemsArray(
String path,
Map<String, dynamic> queryParameters, {
_HubRetryPolicy? retry,
}) async {
try {
final response = await _getItemsResponse(path, queryParameters, retry);
throwIfHttpError(response);
final data = response.data;
if (data is List) {
return data.whereType<Map<String, dynamic>>().toList();
}
return _itemsArray(data);
} catch (e, st) {
// A cancelled request says nothing about the endpoint's contents — let
// it propagate so the caller classifies the fetch as disrupted, not
// empty.
if (e is MediaServerHttpException && e.isCancellation) rethrow;
appLogger.w('JellyfinClient: $path failed (treating as empty)', error: e, stackTrace: st);
return const [];
}
}
}