refactor(mobile): reworked Asset, store all required fields from local & remote (#1539)

replace usage of AssetResponseDto with Asset

Add new class ExifInfo to store data from ExifResponseDto

mobile/lib/shared/services/asset.service.dart

@@ -0,0 +1,107 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:hive/hive.dart';
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:immich_mobile/constants/hive_box.dart';
+import 'package:immich_mobile/modules/backup/background_service/background.service.dart';
+import 'package:immich_mobile/modules/backup/models/hive_backup_albums.model.dart';
+import 'package:immich_mobile/modules/backup/services/backup.service.dart';
+import 'package:immich_mobile/shared/models/asset.dart';
+import 'package:immich_mobile/shared/providers/api.provider.dart';
+import 'package:immich_mobile/shared/services/api.service.dart';
+import 'package:immich_mobile/utils/openapi_extensions.dart';
+import 'package:immich_mobile/utils/tuple.dart';
+import 'package:logging/logging.dart';
+import 'package:openapi/api.dart';
+
+final assetServiceProvider = Provider(
+  (ref) => AssetService(
+    ref.watch(apiServiceProvider),
+    ref.watch(backupServiceProvider),
+    ref.watch(backgroundServiceProvider),
+  ),
+);
+
+class AssetService {
+  final ApiService _apiService;
+  final BackupService _backupService;
+  final BackgroundService _backgroundService;
+  final log = Logger('AssetService');
+
+  AssetService(this._apiService, this._backupService, this._backgroundService);
+
+  /// Returns `null` if the server state did not change, else list of assets
+  Future<Pair<List<Asset>?, String?>> getRemoteAssets({String? etag}) async {
+    try {
+      final Pair<List<AssetResponseDto>, String?>? remote =
+          await _apiService.assetApi.getAllAssetsWithETag(eTag: etag);
+      if (remote == null) {
+        return const Pair(null, null);
+      }
+      return Pair(
+        remote.first.map(Asset.remote).toList(growable: false),
+        remote.second,
+      );
+    } catch (e, stack) {
+      log.severe('Error while getting remote assets', e, stack);
+      return const Pair(null, null);
+    }
+  }
+
+  /// if [urgent] is `true`, do not block by waiting on the background service
+  /// to finish running. Returns `null` instead after a timeout.
+  Future<List<Asset>?> getLocalAssets({bool urgent = false}) async {
+    try {
+      final Future<bool> hasAccess = urgent
+          ? _backgroundService.hasAccess
+              .timeout(const Duration(milliseconds: 250))
+          : _backgroundService.hasAccess;
+      if (!await hasAccess) {
+        throw Exception("Error [getAllAsset] failed to gain access");
+      }
+      final box = await Hive.openBox<HiveBackupAlbums>(hiveBackupInfoBox);
+      final HiveBackupAlbums? backupAlbumInfo = box.get(backupInfoKey);
+      final String userId = Hive.box(userInfoBox).get(userIdKey);
+      if (backupAlbumInfo != null) {
+        return (await _backupService
+                .buildUploadCandidates(backupAlbumInfo.deepCopy()))
+            .map((e) => Asset.local(e, userId))
+            .toList(growable: false);
+      }
+    } catch (e) {
+      debugPrint("Error [_getLocalAssets] ${e.toString()}");
+    }
+    return null;
+  }
+
+  Future<Asset?> getAssetById(String assetId) async {
+    try {
+      final dto = await _apiService.assetApi.getAssetById(assetId);
+      if (dto != null) {
+        return Asset.remote(dto);
+      }
+    } catch (e) {
+      debugPrint("Error [getAssetById]  ${e.toString()}");
+    }
+    return null;
+  }
+
+  Future<List<DeleteAssetResponseDto>?> deleteAssets(
+    Iterable<Asset> deleteAssets,
+  ) async {
+    try {
+      final List<String> payload = [];
+
+      for (final asset in deleteAssets) {
+        payload.add(asset.remoteId!);
+      }
+
+      return await _apiService.assetApi
+          .deleteAsset(DeleteAssetDto(ids: payload));
+    } catch (e) {
+      debugPrint("Error getAllAsset  ${e.toString()}");
+      return null;
+    }
+  }
+}