import 'package:get/get.dart';
import 'package:dio/dio.dart';
import 'package:get_storage/get_storage.dart';

// 导入数据提供者和数据模型
import 'package:problem_check_system/data/providers/auth_provider.dart';
import 'package:problem_check_system/data/models/login_model.dart';
import 'package:problem_check_system/app/routes/app_routes.dart';

class AuthController extends GetxController {
  final AuthProvider _authProvider;
  AuthController({required AuthProvider authProvider})
    : _authProvider = authProvider;

  final username = ''.obs;
  final password = ''.obs;
  final isLoading = false.obs;
  final rememberPassword = false.obs;

  final _box = GetStorage();
  static const _usernameKey = 'username';
  static const _passwordKey = 'password';

  @override
  void onInit() {
    super.onInit();
    _loadSavedCredentials();
  }

  void _loadSavedCredentials() {
    final savedUsername = _box.read(_usernameKey);
    final savedPassword = _box.read(_passwordKey);

    if (savedUsername != null && savedPassword != null) {
      username.value = savedUsername;
      password.value = savedPassword;
      rememberPassword.value = true;
    }
  }

  String getToken() {
    return '';
  }

  void updateUsername(String value) {
    username.value = value;
  }

  void updatePassword(String value) {
    password.value = value;
  }

  Future<void> login() async {
    if (username.value.isEmpty || password.value.isEmpty) {
      Get.snackbar('输入错误', '用户名和密码不能为空');
      return;
    }

    isLoading.value = true;

    try {
      final loginData = LoginModel(
        username: username.value,
        password: password.value,
      );

      final response = await _authProvider.signIn(loginData);

      if (response.statusCode == 200 && response.data['token'] != null) {
        final token = response.data['token'];
        final refreshToken = response.data['refreshToken'];

        _box.write('token', token);
        _box.write('refreshToken', refreshToken);

        if (rememberPassword.value) {
          _box.write(_usernameKey, username.value);
          _box.write(_passwordKey, password.value);
        } else {
          _box.remove(_usernameKey);
          _box.remove(_passwordKey);
        }

        Get.offAllNamed(AppRoutes.home);
      } else {
        Get.snackbar('登录失败', '服务器返回了异常数据');
      }
    } on DioException catch (e) {
      if (e.response?.data != null && e.response?.data['detail'] != null) {
        final serverMessage = e.response!.data['detail'];
        Get.snackbar('登录失败', serverMessage);
      } else {
        Get.snackbar('网络错误', '登录失败，请检查您的网络连接');
      }
    } catch (e) {
      Get.snackbar('错误', '发生未知错误: ${e.toString()}');
    } finally {
      isLoading.value = false;
    }
  }

  Future<void> logout() async {
    _box.remove('token');
    _box.remove('refreshToken');
    if (rememberPassword.value == false) {
      _box.remove(_usernameKey);
      _box.remove(_passwordKey);
    }
    Get.offAllNamed(AppRoutes.login);
  }
}