fix(mobile): show like and comment options on album photo deep links

mobile/lib/services/deep_link.service.dart

@@ -70,7 +70,10 @@ class DeepLinkService {
 
     if (assetRegex.hasMatch(path)) {
       final assetId = assetRegex.firstMatch(path)?.group(1) ?? '';
-      return _buildAssetDeepLink(assetId, ref);
+      // /albums/<albumId>/photos/<assetId> links carry the album context,
+      // which drives the like/comment UI in the viewer
+      final albumId = albumRegex.firstMatch(path)?.group(1);
+      return _buildAssetDeepLink(assetId, ref, albumId: albumId);
     }
     if (albumRegex.hasMatch(path)) {
       final albumId = albumRegex.firstMatch(path)?.group(1) ?? '';
@@ -107,16 +110,19 @@ class DeepLinkService {
     return DriftMemoryRoute(memories: memories, memoryIndex: 0);
   }
 
-  Future<PageRouteInfo?> _buildAssetDeepLink(String assetId, WidgetRef ref) async {
+  Future<PageRouteInfo?> _buildAssetDeepLink(String assetId, WidgetRef ref, {String? albumId}) async {
     final asset = await _betaAssetService.getRemoteAsset(assetId);
     if (asset == null) {
       return null;
     }
 
+    final album = albumId != null ? await _betaRemoteAlbumService.get(albumId) : null;
+
     AssetViewer.setAsset(ref, asset);
     return AssetViewerRoute(
       initialIndex: 0,
       timelineService: _betaTimelineFactory.fromAssets([asset], TimelineOrigin.deepLink),
+      currentAlbum: album,
     );
   }
 

mobile/test/services/deep_link_service_test.dart

@@ -0,0 +1,140 @@
+import 'package:auto_route/auto_route.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:immich_mobile/domain/models/album/album.model.dart';
+import 'package:immich_mobile/domain/models/asset/base_asset.model.dart';
+import 'package:immich_mobile/domain/models/timeline.model.dart';
+import 'package:immich_mobile/domain/services/asset.service.dart';
+import 'package:immich_mobile/domain/services/memory.service.dart';
+import 'package:immich_mobile/domain/services/people.service.dart';
+import 'package:immich_mobile/domain/services/remote_album.service.dart';
+import 'package:immich_mobile/domain/services/timeline.service.dart';
+import 'package:immich_mobile/providers/asset_viewer/asset_viewer.provider.dart';
+import 'package:immich_mobile/routing/router.dart';
+import 'package:immich_mobile/services/deep_link.service.dart';
+import 'package:mocktail/mocktail.dart';
+
+class MockTimelineFactory extends Mock implements TimelineFactory {}
+
+class MockAssetService extends Mock implements AssetService {}
+
+class MockRemoteAlbumService extends Mock implements RemoteAlbumService {}
+
+class MockDriftMemoryService extends Mock implements DriftMemoryService {}
+
+class MockDriftPeopleService extends Mock implements DriftPeopleService {}
+
+class MockPlatformDeepLink extends Mock implements PlatformDeepLink {}
+
+class MockWidgetRef extends Mock implements WidgetRef {}
+
+class MockAssetViewerStateNotifier extends Mock implements AssetViewerStateNotifier {}
+
+const _assetId = 'aaaaaaaa-1111-2222-3333-bbbbbbbbbbbb';
+const _albumId = 'cccccccc-4444-5555-6666-dddddddddddd';
+
+final _asset = RemoteAsset(
+  id: _assetId,
+  name: 'photo.jpg',
+  ownerId: 'user-1',
+  checksum: 'checksum-1',
+  type: AssetType.image,
+  createdAt: DateTime(2026, 6, 12),
+  updatedAt: DateTime(2026, 6, 12),
+  isEdited: false,
+);
+
+final _album = RemoteAlbum(
+  id: _albumId,
+  name: 'Shared Album',
+  ownerId: 'user-1',
+  description: '',
+  createdAt: DateTime(2026, 6, 12),
+  updatedAt: DateTime(2026, 6, 12),
+  isActivityEnabled: true,
+  isShared: true,
+  order: AlbumAssetOrder.asc,
+  assetCount: 1,
+  ownerName: 'Owner',
+);
+
+void main() {
+  late MockTimelineFactory timelineFactory;
+  late MockAssetService assetService;
+  late MockRemoteAlbumService remoteAlbumService;
+  late MockWidgetRef ref;
+  late List<TimelineService> createdTimelineServices;
+  late DeepLinkService sut;
+
+  setUp(() {
+    timelineFactory = MockTimelineFactory();
+    assetService = MockAssetService();
+    remoteAlbumService = MockRemoteAlbumService();
+    ref = MockWidgetRef();
+    createdTimelineServices = [];
+
+    when(() => timelineFactory.fromAssets(any(), TimelineOrigin.deepLink)).thenAnswer((invocation) {
+      final assets = List<BaseAsset>.from(invocation.positionalArguments[0] as List<BaseAsset>);
+      final timelineService = TimelineService((
+        assetSource: (index, count) async => assets.skip(index).take(count).toList(),
+        bucketSource: () => Stream.value([Bucket(assetCount: assets.length)]),
+        origin: TimelineOrigin.deepLink,
+      ));
+      createdTimelineServices.add(timelineService);
+      return timelineService;
+    });
+
+    when(() => ref.read(assetViewerProvider.notifier)).thenReturn(MockAssetViewerStateNotifier());
+
+    sut = DeepLinkService(
+      timelineFactory,
+      assetService,
+      remoteAlbumService,
+      MockDriftMemoryService(),
+      MockDriftPeopleService(),
+      null,
+    );
+
+    addTearDown(() async {
+      for (final timelineService in createdTimelineServices) {
+        await timelineService.dispose();
+      }
+    });
+  });
+
+  PlatformDeepLink link(String path) {
+    final deepLink = MockPlatformDeepLink();
+    when(() => deepLink.uri).thenReturn(Uri.parse('https://my.immich.app$path'));
+    return deepLink;
+  }
+
+  test('album photo link carries the album into the viewer route', () async {
+    when(() => assetService.getRemoteAsset(_assetId)).thenAnswer((_) async => _asset);
+    when(() => remoteAlbumService.get(_albumId)).thenAnswer((_) async => _album);
+
+    final route = await sut.handleMyImmichApp(link('/albums/$_albumId/photos/$_assetId'), ref);
+
+    expect(route, isA<AssetViewerRoute>());
+    expect((route!.args as AssetViewerRouteArgs).currentAlbum, _album);
+  });
+
+  test('still opens the viewer when the album cannot be resolved', () async {
+    when(() => assetService.getRemoteAsset(_assetId)).thenAnswer((_) async => _asset);
+    when(() => remoteAlbumService.get(_albumId)).thenAnswer((_) async => null);
+
+    final route = await sut.handleMyImmichApp(link('/albums/$_albumId/photos/$_assetId'), ref);
+
+    expect(route, isA<AssetViewerRoute>());
+    expect((route!.args as AssetViewerRouteArgs).currentAlbum, isNull);
+  });
+
+  test('plain photo link has no album', () async {
+    when(() => assetService.getRemoteAsset(_assetId)).thenAnswer((_) async => _asset);
+
+    final route = await sut.handleMyImmichApp(link('/photos/$_assetId'), ref);
+
+    expect(route, isA<AssetViewerRoute>());
+    expect((route!.args as AssetViewerRouteArgs).currentAlbum, isNull);
+    verifyNever(() => remoteAlbumService.get(any()));
+  });
+}