fix: cloud sync (#769)

lib/data/model/app/bak/backup2.dart

@@ -0,0 +1,89 @@
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:fl_lib/fl_lib.dart';
+import 'package:freezed_annotation/freezed_annotation.dart';
+import 'package:logging/logging.dart';
+import 'package:server_box/data/res/misc.dart';
+import 'package:server_box/data/res/store.dart';
+
+part 'backup2.freezed.dart';
+part 'backup2.g.dart';
+
+final _loggerV2 = Logger('BackupV2');
+
+@freezed
+abstract class BackupV2 with _$BackupV2 implements Mergeable {
+  const BackupV2._();
+
+  /// Construct a backup with the latest format (v2).
+  ///
+  /// All `Map<String, dynamic>` are:
+  /// ```json
+  /// {
+  ///   "key1": Model{},
+  ///   "_lastModTime": {
+  ///     "key1": 1234567890,
+  ///   },
+  /// }
+  /// ```
+  const factory BackupV2({
+    required int version,
+    required int date,
+    required Map<String, Object?> spis,
+    required Map<String, Object?> snippets,
+    required Map<String, Object?> keys,
+    required Map<String, Object?> container,
+    required Map<String, Object?> history,
+    required Map<String, Object?> settings,
+  }) = _BackupV2;
+
+  factory BackupV2.fromJson(Map<String, dynamic> json) => _$BackupV2FromJson(json);
+
+  @override
+  Future<void> merge({bool force = false}) async {
+    _loggerV2.info('Merging...');
+
+    // Merge each store
+    await Mergeable.mergeStore(backupData: spis, store: Stores.server, force: force);
+    await Mergeable.mergeStore(backupData: snippets, store: Stores.snippet, force: force);
+    await Mergeable.mergeStore(backupData: keys, store: Stores.key, force: force);
+    await Mergeable.mergeStore(backupData: container, store: Stores.container, force: force);
+    await Mergeable.mergeStore(backupData: history, store: Stores.history, force: force);
+    await Mergeable.mergeStore(backupData: settings, store: Stores.setting, force: force);
+
+    // Reload providers and notify listeners
+    Provider.reload();
+    RNodes.app.notify();
+
+    _loggerV2.info('Merge completed');
+  }
+
+  static const formatVer = 2;
+
+  static Future<BackupV2> loadFromStore() async {
+    return BackupV2(
+      version: formatVer,
+      date: DateTimeX.timestamp,
+      spis: Stores.server.getAllMap(includeInternalKeys: true),
+      snippets: Stores.snippet.getAllMap(includeInternalKeys: true),
+      keys: Stores.key.getAllMap(includeInternalKeys: true),
+      container: Stores.container.getAllMap(includeInternalKeys: true),
+      history: Stores.history.getAllMap(includeInternalKeys: true),
+      settings: Stores.setting.getAllMap(includeInternalKeys: true),
+    );
+  }
+
+  static Future<String> backup([String? name]) async {
+    final bak = await BackupV2.loadFromStore();
+    final result = json.encode(bak.toJson());
+    final path = Paths.doc.joinPath(name ?? Miscs.bakFileName);
+    await File(path).writeAsString(result);
+    return path;
+  }
+
+  factory BackupV2.fromJsonString(String jsonString) {
+    final map = json.decode(jsonString) as Map<String, dynamic>;
+    return BackupV2.fromJson(map);
+  }
+}