re factor rog

lib/features/services/auth_service.dart

@@ -0,0 +1,44 @@
+import 'package:rogapp/features/data/user.dart';
+
+import '../utils/const.dart';
+
+import 'package:dio/dio.dart';
+
+class AuthService {
+  Dio dio = Dio();
+
+  Future<User?> userLogin(String email, String password) async {
+    final String serverUrl = ConstValues.currentServer();
+    final String url = '$serverUrl/api/login/';
+
+    try {
+      final response = await dio.post(
+        url,
+        data: {
+          'email': email,
+          'password': password,
+        },
+        options: Options(
+          headers: {
+            'Content-Type': 'application/json; charset=UTF-8',
+          },
+        ),
+      );
+
+      if (response.statusCode == 200 && response.data != null) {
+        final data = response.data;
+        User user = User.fromMap(data["user"]);
+        final String token = data["token"];
+        user.auth_token = token;
+        return user;
+      }
+      return null;
+    } on DioException catch (e) {
+      print("Dio error: ${e.response?.statusCode} - ${e.message}");
+      return null;
+    } catch (e) {
+      print("Unexpected error: $e");
+      return null;
+    }
+  }
+}