Source Code added

mobile/lib/services/cleanup.service.dart

@@ -0,0 +1,60 @@
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:immich_mobile/constants/enums.dart';
+import 'package:immich_mobile/infrastructure/repositories/local_asset.repository.dart';
+import 'package:immich_mobile/providers/infrastructure/asset.provider.dart';
+import 'package:immich_mobile/repositories/asset_media.repository.dart';
+
+final cleanupServiceProvider = Provider<CleanupService>((ref) {
+  return CleanupService(ref.watch(localAssetRepository), ref.watch(assetMediaRepositoryProvider));
+});
+
+class CleanupService {
+  final DriftLocalAssetRepository _localAssetRepository;
+  final AssetMediaRepository _assetMediaRepository;
+
+  const CleanupService(this._localAssetRepository, this._assetMediaRepository);
+
+  Future<RemovalCandidatesResult> getRemovalCandidates(
+    String userId,
+    DateTime cutoffDate, {
+    AssetKeepType keepMediaType = AssetKeepType.none,
+    bool keepFavorites = true,
+    Set<String> keepAlbumIds = const {},
+  }) {
+    return _localAssetRepository.getRemovalCandidates(
+      userId,
+      cutoffDate,
+      keepMediaType: keepMediaType,
+      keepFavorites: keepFavorites,
+      keepAlbumIds: keepAlbumIds,
+    );
+  }
+
+  Future<int> deleteLocalAssets(List<String> localIds) async {
+    if (localIds.isEmpty) {
+      return 0;
+    }
+
+    final deletedIds = await _assetMediaRepository.deleteAll(localIds);
+    if (deletedIds.isNotEmpty) {
+      await _localAssetRepository.delete(deletedIds);
+      return deletedIds.length;
+    }
+
+    return 0;
+  }
+
+  /// Returns album IDs that should be kept by default (e.g., messaging app albums)
+  Set<String> getDefaultKeepAlbumIds(List<(String id, String name)> albums) {
+    const messagingApps = ['whatsapp', 'telegram', 'signal', 'messenger', 'viber', 'wechat', 'line'];
+
+    final toKeep = <String>{};
+    for (final (id, name) in albums) {
+      final albumName = name.toLowerCase();
+      if (messagingApps.any((app) => albumName.contains(app))) {
+        toKeep.add(id);
+      }
+    }
+    return toKeep;
+  }
+}