import 'package:chat/models/user_info_model.dart';
import 'package:chat/providers/auth_provider.dart';
import 'package:chat/routes/auth_routes.dart';
import 'package:get/get.dart';
import 'package:get_storage/get_storage.dart';
import 'package:tencent_im_sdk_plugin/tencent_im_sdk_plugin.dart';

class AuthService extends GetxService {
  static AuthService get to => Get.find<AuthService>();

  final _box = GetStorage();

  /// 供外部使用的，判断是否登录的状态
  get isUserLogin => isLogin.value;

  /// 登录状态记录,可监听的，这样ever才能监听到
  final RxBool isLogin = false.obs;

  /// 供请求时调用，载入内存，是为了每次使用的时候，不需要从磁盘获取
  late String userId = '';
  late String userSig = '';
  late String userToken = '';

  /// 获取存储的token，这个可以做到持久化存储
  String get _userId => _box.read('userId') ?? '';
  String get _userSig => _box.read('userSig') ?? '';
  String get _userToken => _box.read('userToken') ?? '';
  Map<String, dynamic> get _userInfo => _box.read('userInfo') ?? {};

  Rx<UserInfoModel> userInfo = UserInfoModel.empty().obs;

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

    if (_userToken.isNotEmpty) {
      isLogin.value = true;
      userSig = _userSig;
      userId = _userId;
      userToken = _userToken;
      userInfo.value = UserInfoModel.fromJson(_userInfo);
    }
  }

  Future<bool> login(String address) async {
    var result = await AuthProvider.login(address);

    if (result != null) {
      _box.write('userId', result.userID);
      _box.write('userSig', result.userSig);
      _box.write('userToken', result.accessToken);
      _box.write('userInfo', result.userInfo.toJson());

      userId = result.userID;
      userSig = result.userSig;
      userToken = result.accessToken;
      userInfo.value = result.userInfo;

      isLogin.value = true;

      return true;
    } else {
      return false;
    }
  }

  /// 退出登录
  void logout() async {
    await TencentImSDKPlugin.v2TIMManager.logout();
    _box.remove('userSig');
    _box.remove('userId');
    _box.remove('userToken');
    userSig = '';
    userId = '';
    userToken = '';

    userInfo.value = UserInfoModel.empty();
    isLogin.value = false;
    Get.offAllNamed(AuthRoutes.index);
  }
}