feat: add ProfileController for user state management

lib/src/controllers/profile_controller.dart

@@ -0,0 +1,95 @@
+import 'package:get/get.dart';
+import 'package:mom_kitchen/src/controllers/base/base_controller.dart';
+import 'package:mom_kitchen/src/services/app_service.dart';
+
+class UserModel {
+  final String id;
+  final String name;
+  final String email;
+  final String? avatar;
+
+  UserModel({
+    required this.id,
+    required this.name,
+    required this.email,
+    this.avatar,
+  });
+
+  factory UserModel.empty() {
+    return UserModel(id: '', name: '', email: '');
+  }
+
+  bool get isEmpty => id.isEmpty;
+  bool get isNotEmpty => id.isNotEmpty;
+}
+
+class ProfileController extends BaseController {
+  final user = Rx<UserModel?>(null);
+  final isLoggedIn = false.obs;
+
+  @override
+  void onInit() {
+    super.onInit();
+    checkLoginStatus();
+  }
+
+  Future<void> checkLoginStatus() async {
+    await runWithLoading(() async {
+      final storage = AppService.instance.storage;
+      final userId = await storage.getString('user_id');
+      if (userId != null && userId.isNotEmpty) {
+        final name = await storage.getString('user_name') ?? 'User';
+        final email = await storage.getString('user_email') ?? '';
+        user.value = UserModel(id: userId, name: name, email: email);
+        isLoggedIn.value = true;
+      }
+    });
+  }
+
+  Future<void> login(String email, String password) async {
+    await runWithLoading(() async {
+      await Future.delayed(const Duration(seconds: 1));
+
+      final storage = AppService.instance.storage;
+      await storage.setString('user_id', 'user_123');
+      await storage.setString('user_name', 'Test User');
+      await storage.setString('user_email', email);
+
+      user.value = UserModel(id: 'user_123', name: 'Test User', email: email);
+      isLoggedIn.value = true;
+    });
+  }
+
+  Future<void> logout() async {
+    await runWithLoading(() async {
+      final storage = AppService.instance.storage;
+      await storage.remove('user_id');
+      await storage.remove('user_name');
+      await storage.remove('user_email');
+
+      user.value = null;
+      isLoggedIn.value = false;
+    });
+  }
+
+  Future<void> updateProfile({String? name, String? avatar}) async {
+    if (user.value == null) return;
+
+    await runWithLoading(() async {
+      await Future.delayed(const Duration(milliseconds: 500));
+
+      final storage = AppService.instance.storage;
+
+      if (name != null) {
+        await storage.setString('user_name', name);
+      }
+
+      user.value = UserModel(
+        id: user.value!.id,
+        name: name ?? user.value!.name,
+        email: user.value!.email,
+        avatar: avatar ?? user.value!.avatar,
+      );
+    });
+  }
+}