feat: Implement initial authentication, multi-environment support, and core app infrastructure.

lib/features/auth/data/auth_repository.dart

@@ -0,0 +1,81 @@
+import 'package:dio/dio.dart';
+import 'package:real_estate_mobile/core/constants/api_constants.dart';
+import 'package:real_estate_mobile/core/network/api_client.dart';
+import 'package:real_estate_mobile/core/network/api_exceptions.dart';
+import 'package:real_estate_mobile/core/storage/secure_storage.dart';
+import 'package:real_estate_mobile/features/auth/data/models/auth_response.dart';
+import 'package:real_estate_mobile/features/auth/data/models/register_request.dart';
+import 'package:real_estate_mobile/features/auth/data/models/user_model.dart';
+
+class AuthRepository {
+  final Dio _dio = ApiClient.instance.dio;
+
+  Future<Map<String, dynamic>> login({
+    required String email,
+    required String password,
+  }) async {
+    try {
+      final response = await _dio.post(
+        ApiConstants.authLogin,
+        data: {'email': email, 'password': password},
+      );
+
+      final data = response.data['data'] as Map<String, dynamic>;
+
+      // Check if 2FA is required
+      if (data['requiresTwoFactor'] == true) {
+        return {
+          'requiresTwoFactor': true,
+          'tempToken': data['tempToken'],
+        };
+      }
+
+      final authResponse = AuthResponse.fromJson(data);
+
+      await SecureStorage.saveTokens(
+        accessToken: authResponse.accessToken,
+        refreshToken: authResponse.refreshToken,
+      );
+
+      return {
+        'requiresTwoFactor': false,
+        'user': authResponse.user,
+      };
+    } on DioException catch (e) {
+      if (e.error is ApiException) {
+        throw e.error as ApiException;
+      }
+      throw ApiException(
+        message: e.message ?? 'Login failed',
+        statusCode: e.response?.statusCode,
+      );
+    }
+  }
+
+  Future<UserModel> register(RegisterRequest request) async {
+    try {
+      final response = await _dio.post(
+        ApiConstants.authRegister,
+        data: request.toJson(),
+      );
+
+      final data = response.data['data'] as Map<String, dynamic>;
+      final authResponse = AuthResponse.fromJson(data);
+
+      await SecureStorage.saveTokens(
+        accessToken: authResponse.accessToken,
+        refreshToken: authResponse.refreshToken,
+      );
+
+      return authResponse.user;
+    } on DioException catch (e) {
+      if (e.error is ApiException) {
+        throw e.error as ApiException;
+      }
+      throw ApiException(
+        message: e.message ?? 'Registration failed',
+        statusCode: e.response?.statusCode,
+      );
+    }
+  }
+}