Initial commit

lib/services/storage_service.dart

@@ -0,0 +1,58 @@
+import 'dart:convert';
+import 'package:hive/hive.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import '../models/user.dart';
+
+class StorageService {
+  static final StorageService _instance = StorageService._internal();
+  factory StorageService() => _instance;
+  StorageService._internal();
+
+  Box? _box;
+  SharedPreferences? _prefs;
+
+  Future<void> init() async {
+    _box = Hive.box('zhinianBox');
+    _prefs = await SharedPreferences.getInstance();
+  }
+
+  Future<void> saveUser(User user) async {
+    await _box?.put('user', jsonEncode(user.toJson()));
+  }
+
+  User? getUser() {
+    final data = _box?.get('user');
+    if (data == null) return null;
+    try {
+      return User.fromJson(jsonDecode(data));
+    } catch (_) {
+      return null;
+    }
+  }
+
+  Future<void> clearUser() async {
+    await _box?.delete('user');
+  }
+
+  Future<void> setString(String key, String value) async {
+    await _prefs?.setString(key, value);
+  }
+
+  String? getString(String key) {
+    return _prefs?.getString(key);
+  }
+
+  Future<void> setBool(String key, bool value) async {
+    await _prefs?.setBool(key, value);
+  }
+
+  bool? getBool(String key) {
+    return _prefs?.getBool(key);
+  }
+
+  Future<void> remove(String key) async {
+    await _prefs?.remove(key);
+  }
+}
+
+final storageService = StorageService();