feat: add arch

lib/data/models/user_model.dart

@@ -0,0 +1,6 @@
+class UserModel {
+  final String token;
+  final String name;
+
+  UserModel({required this.token, required this.name});
+}

lib/data/repositories/auth_repository.dart

@@ -0,0 +1,24 @@
+import 'package:tm_app/core/utils/result.dart';
+
+import '../../core/utils/app_exceptions.dart';
+import '../models/user_model.dart';
+import '../services/auth_service.dart';
+
+class AuthRepository {
+  final AuthService _authService;
+
+  AuthRepository(this._authService);
+
+  Future<Result<UserModel>> login(String email, String password) async {
+    try {
+      final response = await _authService.login(email, password);
+      final user = UserModel(token: response['token'], name: response['name']);
+      return Result.ok(user); // در حالت موفقیت، یک Ok برمی‌گرداند
+    } catch (e) {
+      // در حالت خطا، یک Error برمی‌گرداند
+      return Result.error(
+        AuthenticationException('Email or password is not correct.'),
+      );
+    }
+  }
+}

lib/data/services/auth_service.dart

@@ -0,0 +1,12 @@
+class AuthService {
+  Future<Map<String, dynamic>> login(String email, String password) async {
+    // شبیه‌سازی API Call
+    await Future.delayed(const Duration(seconds: 2));
+
+    if (email == 'test@example.com' && password == 'password123') {
+      return {'token': 'xyz123', 'name': 'John Doe'};
+    } else {
+      throw Exception('Invalid credentials');
+    }
+  }
+}