refactor(mobile): device asset entity to use modified time (#17064)

* refactor: device asset entity to use modified time

* chore: cleanup

* refactor: remove album media dependency from hashservice

* refactor: return updated copy of asset

* add hash service tests

* chore: rename hash batch constants

* chore: log the number of assets processed during migration

* chore: more logs

* refactor: use lookup and more tests

* use sort approach

* refactor hash service to use for loop instead

* refactor: rename to getByIds

---------

Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>

mobile/lib/infrastructure/entities/device_asset.entity.dart

@@ -0,0 +1,36 @@
+import 'dart:typed_data';
+
+import 'package:immich_mobile/domain/models/device_asset.model.dart';
+import 'package:immich_mobile/utils/hash.dart';
+import 'package:isar/isar.dart';
+
+part 'device_asset.entity.g.dart';
+
+@Collection(inheritance: false)
+class DeviceAssetEntity {
+  Id get id => fastHash(assetId);
+
+  @Index(replace: true, unique: true, type: IndexType.hash)
+  final String assetId;
+  @Index(unique: false, type: IndexType.hash)
+  final List<byte> hash;
+  final DateTime modifiedTime;
+
+  const DeviceAssetEntity({
+    required this.assetId,
+    required this.hash,
+    required this.modifiedTime,
+  });
+
+  DeviceAsset toModel() => DeviceAsset(
+        assetId: assetId,
+        hash: Uint8List.fromList(hash),
+        modifiedTime: modifiedTime,
+      );
+
+  static DeviceAssetEntity fromDto(DeviceAsset dto) => DeviceAssetEntity(
+        assetId: dto.assetId,
+        hash: dto.hash,
+        modifiedTime: dto.modifiedTime,
+      );
+}