feat(mobile): drift favorite page (#19783)

* feat(mobile): drift favorite page

* remove status indicator join

mobile/lib/domain/services/timeline.service.dart

@@ -54,6 +54,13 @@ class TimelineFactory {
             _timelineRepository.watchRemoteBucket(albumId, groupBy: groupBy),
       );
 
+  TimelineService favorite(String userId) => TimelineService(
+        assetSource: (offset, count) => _timelineRepository
+            .getFavoriteBucketAssets(userId, offset: offset, count: count),
+        bucketSource: () =>
+            _timelineRepository.watchFavoriteBucket(userId, groupBy: groupBy),
+      );
+
   TimelineService trash(String userId) => TimelineService(
         assetSource: (offset, count) => _timelineRepository
             .getTrashBucketAssets(userId, offset: offset, count: count),

mobile/lib/infrastructure/repositories/timeline.repository.dart

@@ -214,6 +214,54 @@ class DriftTimelineRepository extends DriftDatabaseRepository {
         .get();
   }
 
+  Stream<List<Bucket>> watchFavoriteBucket(
+    String userId, {
+    GroupAssetsBy groupBy = GroupAssetsBy.day,
+  }) {
+    if (groupBy == GroupAssetsBy.none) {
+      return _db.remoteAssetEntity
+          .count(
+            where: (row) =>
+                row.isFavorite.equals(true) & row.ownerId.equals(userId),
+          )
+          .map(_generateBuckets)
+          .watchSingle();
+    }
+
+    final assetCountExp = _db.remoteAssetEntity.id.count();
+    final dateExp = _db.remoteAssetEntity.createdAt.dateFmt(groupBy);
+
+    final query = _db.remoteAssetEntity.selectOnly()
+      ..addColumns([assetCountExp, dateExp])
+      ..where(
+        _db.remoteAssetEntity.ownerId.equals(userId) &
+            _db.remoteAssetEntity.isFavorite.equals(true),
+      )
+      ..groupBy([dateExp])
+      ..orderBy([OrderingTerm.desc(dateExp)]);
+
+    return query.map((row) {
+      final timeline = row.read(dateExp)!.dateFmt(groupBy);
+      final assetCount = row.read(assetCountExp)!;
+      return TimeBucket(date: timeline, assetCount: assetCount);
+    }).watch();
+  }
+
+  Future<List<BaseAsset>> getFavoriteBucketAssets(
+    String userId, {
+    required int offset,
+    required int count,
+  }) {
+    final query = _db.remoteAssetEntity.select()
+      ..where(
+        (row) => row.isFavorite.equals(true) & row.ownerId.equals(userId),
+      )
+      ..orderBy([(row) => OrderingTerm.desc(row.createdAt)])
+      ..limit(count, offset: offset);
+
+    return query.map((row) => row.toDto()).get();
+  }
+
   Stream<List<Bucket>> watchTrashBucket(
     String userId, {
     GroupAssetsBy groupBy = GroupAssetsBy.day,

mobile/lib/presentation/pages/dev/drift_favorite.page.dart

@@ -0,0 +1,33 @@
+import 'package:auto_route/auto_route.dart';
+import 'package:flutter/widgets.dart';
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:immich_mobile/presentation/widgets/timeline/timeline.widget.dart';
+import 'package:immich_mobile/providers/infrastructure/timeline.provider.dart';
+import 'package:immich_mobile/providers/user.provider.dart';
+
+@RoutePage()
+class DriftFavoritePage extends StatelessWidget {
+  const DriftFavoritePage({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return ProviderScope(
+      overrides: [
+        timelineServiceProvider.overrideWith(
+          (ref) {
+            final user = ref.watch(currentUserProvider);
+            if (user == null) {
+              throw Exception('User must be logged in to access favorite');
+            }
+
+            final timelineService =
+                ref.watch(timelineFactoryProvider).favorite(user.id);
+            ref.onDispose(timelineService.dispose);
+            return timelineService;
+          },
+        ),
+      ],
+      child: const Timeline(),
+    );
+  }
+}

mobile/lib/presentation/pages/dev/feat_in_development.page.dart

@@ -99,6 +99,11 @@ final _features = [
     icon: Icons.timeline_rounded,
     onTap: (ctx, _) => ctx.pushRoute(const TabShellRoute()),
   ),
+  _Feature(
+    name: 'Favorite',
+    icon: Icons.favorite_outline_rounded,
+    onTap: (ctx, _) => ctx.pushRoute(const DriftFavoriteRoute()),
+  ),
   _Feature(
     name: 'Trash',
     icon: Icons.delete_outline_rounded,

mobile/lib/routing/router.dart

@@ -66,6 +66,7 @@ import 'package:immich_mobile/pages/search/person_result.page.dart';
 import 'package:immich_mobile/pages/search/recently_taken.page.dart';
 import 'package:immich_mobile/pages/search/search.page.dart';
 import 'package:immich_mobile/pages/share_intent/share_intent.page.dart';
+import 'package:immich_mobile/presentation/pages/dev/drift_favorite.page.dart';
 import 'package:immich_mobile/presentation/pages/dev/drift_trash.page.dart';
 import 'package:immich_mobile/presentation/pages/dev/drift_archive.page.dart';
 import 'package:immich_mobile/presentation/pages/dev/drift_locked_folder.page.dart';
@@ -395,6 +396,10 @@ class AppRouter extends RootStackRouter {
       page: DriftMemoryRoute.page,
       guards: [_authGuard, _duplicateGuard],
     ),
+    AutoRoute(
+      page: DriftFavoriteRoute.page,
+      guards: [_authGuard, _duplicateGuard],
+    ),
     AutoRoute(
       page: DriftTrashRoute.page,
       guards: [_authGuard, _duplicateGuard],

mobile/lib/routing/router.gr.dart

@@ -634,6 +634,22 @@ class DriftArchiveRoute extends PageRouteInfo<void> {
   );
 }
 
+/// generated route for
+/// [DriftFavoritePage]
+class DriftFavoriteRoute extends PageRouteInfo<void> {
+  const DriftFavoriteRoute({List<PageRouteInfo>? children})
+      : super(DriftFavoriteRoute.name, initialChildren: children);
+
+  static const String name = 'DriftFavoriteRoute';
+
+  static PageInfo page = PageInfo(
+    name,
+    builder: (data) {
+      return const DriftFavoritePage();
+    },
+  );
+}
+
 /// generated route for
 /// [DriftLockedFolderPage]
 class DriftLockedFolderRoute extends PageRouteInfo<void> {