fix: preserve flat singles output for extension releases

lib/providers/download_queue_provider.dart

@@ -2000,6 +2000,33 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
     state = state.copyWith(outputDir: dir);
   }
 
+  bool _shouldTreatAsSingleRelease(Track track) {
+    if (track.isSingle) {
+      return true;
+    }
+
+    final normalizedAlbumType = normalizeOptionalString(
+      track.albumType,
+    )?.toLowerCase();
+    if (normalizedAlbumType != null && normalizedAlbumType.isNotEmpty) {
+      return false;
+    }
+
+    final totalTracks = track.totalTracks;
+    if (totalTracks == 1) {
+      return true;
+    }
+
+    final normalizedAlbumName = normalizeOptionalString(
+      track.albumName,
+    )?.toLowerCase();
+    if (normalizedAlbumName == 'single' || normalizedAlbumName == 'singles') {
+      return totalTracks == null || totalTracks <= 2;
+    }
+
+    return false;
+  }
+
   Future<String> _buildOutputDir(
     Track track,
     String folderOrganization, {
@@ -2036,7 +2063,7 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
     }
 
     if (separateSingles) {
-      final isSingle = track.isSingle;
+      final isSingle = _shouldTreatAsSingleRelease(track);
       final artistName = _sanitizeFolderName(folderArtist);
 
       if (albumFolderStructure == 'artist_album_singles') {
@@ -2215,7 +2242,7 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
     }
 
     if (separateSingles) {
-      final isSingle = track.isSingle;
+      final isSingle = _shouldTreatAsSingleRelease(track);
       final artistName = _sanitizeFolderName(folderArtist);
 
       if (albumFolderStructure == 'artist_album_singles') {
@@ -4137,7 +4164,7 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
       String? safBaseName;
       String safOutputExt = _determineOutputExt(quality, item.service);
       if (isSafMode) {
-        final effectiveFormat = trackToDownload.isSingle
+        final effectiveFormat = _shouldTreatAsSingleRelease(trackToDownload)
             ? state.singleFilenameFormat
             : state.filenameFormat;
         final baseName = await PlatformBridge.buildFilename(effectiveFormat, {
@@ -4552,7 +4579,7 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
               ? (trackToDownload.coverUrl ?? '')
               : '',
           outputDir: outputDir,
-          filenameFormat: trackToDownload.isSingle
+          filenameFormat: _shouldTreatAsSingleRelease(trackToDownload)
               ? state.singleFilenameFormat
               : state.filenameFormat,
           quality: quality,

lib/providers/track_provider.dart

@@ -908,7 +908,7 @@ class TrackNotifier extends Notifier<TrackState> {
       discNumber: data['disc_number'] as int?,
       totalDiscs: data['total_discs'] as int?,
       releaseDate: data['release_date'] as String?,
-      albumType: data['album_type'] as String?,
+      albumType: normalizeOptionalString(data['album_type']?.toString()),
       totalTracks: data['total_tracks'] as int?,
       composer: data['composer']?.toString(),
     );
@@ -945,7 +945,7 @@ class TrackNotifier extends Notifier<TrackState> {
       releaseDate: data['release_date']?.toString(),
       totalTracks: data['total_tracks'] as int?,
       source: effectiveSource,
-      albumType: data['album_type']?.toString(),
+      albumType: normalizeOptionalString(data['album_type']?.toString()),
       composer: data['composer']?.toString(),
       itemType: itemType,
     );

lib/screens/album_screen.dart

@@ -75,6 +75,8 @@ class _AlbumScreenState extends ConsumerState<AlbumScreen> {
   String? _error;
   bool _showTitleInAppBar = false;
   String? _artistId;
+  String? _albumType;
+  int? _albumTotalTracks;
   final ScrollController _scrollController = ScrollController();
 
   @override
@@ -112,6 +114,8 @@ class _AlbumScreenState extends ConsumerState<AlbumScreen> {
       _tracks = _AlbumCache.get(widget.albumId);
     }
     _artistId = widget.artistId;
+    _albumType = _tracks?.firstOrNull?.albumType;
+    _albumTotalTracks = _tracks?.firstOrNull?.totalTracks;
 
     if (_tracks == null || _tracks!.isEmpty) {
       _fetchTracks();
@@ -179,13 +183,22 @@ class _AlbumScreenState extends ConsumerState<AlbumScreen> {
           deezerAlbumId,
         );
         final trackList = metadata['track_list'] as List<dynamic>;
-        final tracks = trackList
-            .map((t) => _parseTrack(t as Map<String, dynamic>))
-            .toList();
-
         final albumInfo = metadata['album_info'] as Map<String, dynamic>?;
         final artistId = (albumInfo?['artist_id'] ?? albumInfo?['artistId'])
             ?.toString();
+        final albumType = normalizeOptionalString(
+          albumInfo?['album_type']?.toString(),
+        );
+        final totalTracks = albumInfo?['total_tracks'] as int?;
+        final tracks = trackList
+            .map(
+              (t) => _parseTrack(
+                t as Map<String, dynamic>,
+                albumTypeFallback: albumType,
+                totalTracksFallback: totalTracks,
+              ),
+            )
+            .toList();
 
         _AlbumCache.set(widget.albumId, tracks);
 
@@ -193,6 +206,8 @@ class _AlbumScreenState extends ConsumerState<AlbumScreen> {
           setState(() {
             _tracks = tracks;
             _artistId = artistId;
+            _albumType = albumType;
+            _albumTotalTracks = totalTracks;
             _isLoading = false;
           });
         }
@@ -204,13 +219,22 @@ class _AlbumScreenState extends ConsumerState<AlbumScreen> {
           qobuzAlbumId,
         );
         final trackList = metadata['track_list'] as List<dynamic>;
-        final tracks = trackList
-            .map((t) => _parseTrack(t as Map<String, dynamic>))
-            .toList();
-
         final albumInfo = metadata['album_info'] as Map<String, dynamic>?;
         final artistId = (albumInfo?['artist_id'] ?? albumInfo?['artistId'])
             ?.toString();
+        final albumType = normalizeOptionalString(
+          albumInfo?['album_type']?.toString(),
+        );
+        final totalTracks = albumInfo?['total_tracks'] as int?;
+        final tracks = trackList
+            .map(
+              (t) => _parseTrack(
+                t as Map<String, dynamic>,
+                albumTypeFallback: albumType,
+                totalTracksFallback: totalTracks,
+              ),
+            )
+            .toList();
 
         _AlbumCache.set(widget.albumId, tracks);
 
@@ -218,6 +242,8 @@ class _AlbumScreenState extends ConsumerState<AlbumScreen> {
           setState(() {
             _tracks = tracks;
             _artistId = artistId;
+            _albumType = albumType;
+            _albumTotalTracks = totalTracks;
             _isLoading = false;
           });
         }
@@ -229,13 +255,22 @@ class _AlbumScreenState extends ConsumerState<AlbumScreen> {
           tidalAlbumId,
         );
         final trackList = metadata['track_list'] as List<dynamic>;
-        final tracks = trackList
-            .map((t) => _parseTrack(t as Map<String, dynamic>))
-            .toList();
-
         final albumInfo = metadata['album_info'] as Map<String, dynamic>?;
         final artistId = (albumInfo?['artist_id'] ?? albumInfo?['artistId'])
             ?.toString();
+        final albumType = normalizeOptionalString(
+          albumInfo?['album_type']?.toString(),
+        );
+        final totalTracks = albumInfo?['total_tracks'] as int?;
+        final tracks = trackList
+            .map(
+              (t) => _parseTrack(
+                t as Map<String, dynamic>,
+                albumTypeFallback: albumType,
+                totalTracksFallback: totalTracks,
+              ),
+            )
+            .toList();
 
         _AlbumCache.set(widget.albumId, tracks);
 
@@ -243,6 +278,8 @@ class _AlbumScreenState extends ConsumerState<AlbumScreen> {
           setState(() {
             _tracks = tracks;
             _artistId = artistId;
+            _albumType = albumType;
+            _albumTotalTracks = totalTracks;
             _isLoading = false;
           });
         }
@@ -255,13 +292,22 @@ class _AlbumScreenState extends ConsumerState<AlbumScreen> {
         }
 
         final trackList = result['tracks'] as List<dynamic>;
-        final tracks = trackList
-            .map((t) => _parseTrack(t as Map<String, dynamic>))
-            .toList();
-
         final albumInfo = result['album'] as Map<String, dynamic>?;
         final artistId = (albumInfo?['artist_id'] ?? albumInfo?['artistId'])
             ?.toString();
+        final albumType = normalizeOptionalString(
+          albumInfo?['album_type']?.toString(),
+        );
+        final totalTracks = albumInfo?['total_tracks'] as int?;
+        final tracks = trackList
+            .map(
+              (t) => _parseTrack(
+                t as Map<String, dynamic>,
+                albumTypeFallback: albumType,
+                totalTracksFallback: totalTracks,
+              ),
+            )
+            .toList();
 
         _AlbumCache.set(widget.albumId, tracks);
 
@@ -269,6 +315,8 @@ class _AlbumScreenState extends ConsumerState<AlbumScreen> {
           setState(() {
             _tracks = tracks;
             _artistId = artistId;
+            _albumType = albumType;
+            _albumTotalTracks = totalTracks;
             _isLoading = false;
           });
         }
@@ -284,7 +332,11 @@ class _AlbumScreenState extends ConsumerState<AlbumScreen> {
     }
   }
 
-  Track _parseTrack(Map<String, dynamic> data) {
+  Track _parseTrack(
+    Map<String, dynamic> data, {
+    String? albumTypeFallback,
+    int? totalTracksFallback,
+  }) {
     return Track(
       id: data['spotify_id'] as String? ?? '',
       name: data['name'] as String? ?? '',
@@ -301,8 +353,14 @@ class _AlbumScreenState extends ConsumerState<AlbumScreen> {
       discNumber: data['disc_number'] as int?,
       totalDiscs: data['total_discs'] as int?,
       releaseDate: data['release_date'] as String?,
-      albumType: data['album_type'] as String?,
-      totalTracks: data['total_tracks'] as int?,
+      albumType:
+          normalizeOptionalString(data['album_type']?.toString()) ??
+          albumTypeFallback ??
+          _albumType,
+      totalTracks:
+          data['total_tracks'] as int? ??
+          totalTracksFallback ??
+          _albumTotalTracks,
       composer: data['composer']?.toString(),
     );
   }

lib/screens/artist_screen.dart

@@ -412,7 +412,9 @@ class _ArtistScreenState extends ConsumerState<ArtistScreen> {
       discNumber: data['disc_number'] as int?,
       totalDiscs: data['total_discs'] as int?,
       releaseDate: data['release_date']?.toString(),
-      albumType: data['album_type']?.toString() ?? album?.albumType,
+      albumType:
+          normalizeOptionalString(data['album_type']?.toString()) ??
+          album?.albumType,
       totalTracks: data['total_tracks'] as int? ?? album?.totalTracks,
       composer: data['composer']?.toString(),
       source: data['provider_id']?.toString() ?? widget.extensionId,
@@ -1057,9 +1059,10 @@ class _ArtistScreenState extends ConsumerState<ArtistScreen> {
       );
       if (result != null && result['tracks'] != null) {
         final tracksList = result['tracks'] as List<dynamic>;
-        return tracksList
+        final parsedTracks = tracksList
             .map((t) => _parseTrack(t as Map<String, dynamic>, album: album))
             .toList();
+        return parsedTracks;
       }
     } else if (album.id.startsWith('deezer:')) {
       final deezerId = album.id.replaceFirst('deezer:', '');
@@ -1934,6 +1937,8 @@ class _ArtistScreenState extends ConsumerState<ArtistScreen> {
             albumId: album.id,
             albumName: album.name,
             coverUrl: album.coverUrl,
+            initialAlbumType: album.albumType,
+            initialTotalTracks: album.totalTracks,
           ),
         ),
       );

lib/screens/home_tab.dart

@@ -3031,6 +3031,8 @@ class _HomeTabState extends ConsumerState<HomeTab>
           albumId: albumItem.id,
           albumName: albumItem.name,
           coverUrl: albumItem.coverUrl,
+          initialAlbumType: albumItem.albumType,
+          initialTotalTracks: albumItem.totalTracks,
         ),
       ),
     );
@@ -4315,6 +4317,8 @@ class ExtensionAlbumScreen extends ConsumerStatefulWidget {
   final String albumId;
   final String albumName;
   final String? coverUrl;
+  final String? initialAlbumType;
+  final int? initialTotalTracks;
 
   const ExtensionAlbumScreen({
     super.key,
@@ -4322,6 +4326,8 @@ class ExtensionAlbumScreen extends ConsumerStatefulWidget {
     required this.albumId,
     required this.albumName,
     this.coverUrl,
+    this.initialAlbumType,
+    this.initialTotalTracks,
   });
 
   @override
@@ -4335,10 +4341,14 @@ class _ExtensionAlbumScreenState extends ConsumerState<ExtensionAlbumScreen> {
   String? _error;
   String? _artistId;
   String? _artistName;
+  String? _albumType;
+  int? _albumTotalTracks;
 
   @override
   void initState() {
     super.initState();
+    _albumType = normalizeOptionalString(widget.initialAlbumType);
+    _albumTotalTracks = widget.initialTotalTracks;
     _fetchTracks();
   }
 
@@ -4372,17 +4382,28 @@ class _ExtensionAlbumScreenState extends ConsumerState<ExtensionAlbumScreen> {
         return;
       }
 
-      final tracks = trackList
-          .map((t) => _parseTrack(t as Map<String, dynamic>))
-          .toList();
-
       final artistId = (result['artist_id'] ?? result['artistId'])?.toString();
       final artistName = result['artists'] as String?;
+      final albumType =
+          normalizeOptionalString(result['album_type']?.toString()) ??
+          _albumType;
+      final totalTracks = result['total_tracks'] as int? ?? _albumTotalTracks;
+      final tracks = trackList
+          .map(
+            (t) => _parseTrack(
+              t as Map<String, dynamic>,
+              albumTypeFallback: albumType,
+              totalTracksFallback: totalTracks,
+            ),
+          )
+          .toList();
 
       setState(() {
         _tracks = tracks;
         _artistId = artistId;
         _artistName = artistName;
+        _albumType = albumType;
+        _albumTotalTracks = totalTracks;
         _isLoading = false;
       });
     } catch (e) {
@@ -4394,7 +4415,11 @@ class _ExtensionAlbumScreenState extends ConsumerState<ExtensionAlbumScreen> {
     }
   }
 
-  Track _parseTrack(Map<String, dynamic> data) {
+  Track _parseTrack(
+    Map<String, dynamic> data, {
+    String? albumTypeFallback,
+    int? totalTracksFallback,
+  }) {
     int durationMs = 0;
     final durationValue = data['duration_ms'];
     if (durationValue is int) {
@@ -4422,7 +4447,14 @@ class _ExtensionAlbumScreenState extends ConsumerState<ExtensionAlbumScreen> {
       discNumber: data['disc_number'] as int?,
       totalDiscs: data['total_discs'] as int?,
       releaseDate: data['release_date']?.toString(),
-      totalTracks: data['total_tracks'] as int?,
+      albumType:
+          normalizeOptionalString(data['album_type']?.toString()) ??
+          albumTypeFallback ??
+          _albumType,
+      totalTracks:
+          data['total_tracks'] as int? ??
+          totalTracksFallback ??
+          _albumTotalTracks,
       composer: data['composer']?.toString(),
       source: widget.extensionId,
     );