import 'dart:async';

import 'package:get/get.dart';
import 'package:injectable/injectable.dart';
import 'package:location/base/app_base_request.dart';
import 'package:location/data/api/atmob_api.dart';
import 'package:location/data/api/request/login_request.dart';
import 'package:location/data/api/request/send_code_request.dart';
import 'package:location/data/bean/location_info.dart';
import 'package:location/data/bean/member_status_info.dart';
import 'package:location/data/bean/user_info.dart';
import 'package:location/data/consts/constants.dart';
import 'package:location/data/consts/error_code.dart';
import 'package:location/data/repositories/message_repository.dart';
import 'package:location/socket/atmob_location_client.dart';
import 'package:location/data/repositories/friends_repository.dart';
import 'package:location/di/get_it.dart';
import 'package:location/resource/string.gen.dart';
import 'package:location/utils/async_util.dart';
import 'package:location/utils/atmob_log.dart';
import 'package:location/utils/http_handler.dart';
import 'package:location/utils/mmkv_util.dart';
import '../../sdk/map/map_helper.dart';
import '../api/response/login_response.dart';

@lazySingleton
class AccountRepository {
  final AtmobApi atmobApi;
  final String tag = "AccountRepository";
  static final String keyAccountLoginPhoneNum = 'key_account_login_phone_num';
  static final String keyAccountLoginToken = 'key_account_login_token';
  static final String keyAccountLoginUserId = 'key_account_login_user_id';

  RxnString loginPhoneNum = RxnString();
  RxBool isLogin = RxBool(false);
  Rxn<MemberStatusInfo> memberStatusInfo = Rxn<MemberStatusInfo>();

  int? _lastRequestCodeTime;
  int _errorCodeTimes = 0;

  Timer? refreshMemberHandler;
  CancelableFuture? memberStatusFuture;

  static String? token = KVUtil.getString(keyAccountLoginToken, null);

  late final FriendsRepository friendsRepository;
  late final MessageRepository messageRepository;

  final Rx<UserInfo> mineUserInfo = Rx<UserInfo>(UserInfo(
      id: Constants.mineLocationId,
      phoneNumber: StringName.locationMine,
      isMine: true));

  AccountRepository(this.atmobApi) {
    AtmobLog.d(tag, '$tag....init');
    friendsRepository = FriendsRepository.getInstance();
    messageRepository = MessageRepository.getInstance();

    isLogin.bindStream(
      loginPhoneNum.map((value) {
        return value?.isNotEmpty == true;
      }),
    );
    loginPhoneNum.value = KVUtil.getString(keyAccountLoginPhoneNum, null);


    refreshMemberStatus();
    MapHelper.addLocationListener((location) {
      mineUserInfo.value.lastLocation.value =
          LocationInfo.fromMapLocation(location);
    });
  }

  Future<void> loginSendCode(String phoneNum) {
    final currentTime = DateTime.now().millisecondsSinceEpoch;

    // 检查是否在 60 秒内重复请求
    if (currentTime - (_lastRequestCodeTime ?? 0) < 60 * 1000) {
      throw RequestCodeTooOftenException();
    }
    return atmobApi
        .loginSendCode(SendCodeRequest(phoneNum))
        .then(HttpHandler.handle(true))
        .then((value) {
      _lastRequestCodeTime = currentTime;
      _errorCodeTimes = 0;
    });
  }

  Future<LoginResponse> loginUserLogin(
      String phoneNum, String verificationCode) {
    if (_errorCodeTimes >= 5) {
      throw LoginTooOftenException();
    }
    return atmobApi
        .loginUserLogin(LoginRequest(phoneNum, verificationCode))
        .then(HttpHandler.handle(true))
        .then((response) {
      _errorCodeTimes = 0;
      onLoginSuccess(phoneNum, response.authToken);
      return response;
    }).catchError((error) {
      if (error is ServerErrorException &&
          error.code == ErrorCode.verificationCodeError) {
        _errorCodeTimes++;
      }
      throw error;
    });
  }

  void onLoginSuccess(String phoneNum, String authToken) {
    AccountRepository.token = authToken;
    loginPhoneNum.value = phoneNum;

    KVUtil.putString(keyAccountLoginPhoneNum, phoneNum);
    KVUtil.putString(keyAccountLoginToken, authToken);

    AtmobLocationClient.connectWebSocket();

    refreshMemberStatus();
    friendsRepository.refreshFriends();
    messageRepository.refreshFriendRequest();
  }

  void logout() {
    token = null;

    refreshMemberHandler?.cancel();

    AtmobLocationClient.disConnectWebSocket();

    KVUtil.putString(keyAccountLoginPhoneNum, null);
    KVUtil.putString(keyAccountLoginToken, null);
    KVUtil.putString(keyAccountLoginUserId, null);
    loginPhoneNum.value = null;
    memberStatusInfo.value = null;

    friendsRepository.clearFriends();
    messageRepository.clearMessage();
  }

  void refreshMemberStatus() {
    memberStatusFuture?.cancel();
    memberStatusFuture = AsyncUtil.retryWithExponentialBackoff(
        () => getMemberStatus(), 10, predicate: (error) {
      if (error is ServerErrorException) {
        return error.code != ErrorCode.noLoginError;
      }
      return true;
    });
    memberStatusFuture?.then((data) {
      AtmobLog.d(tag, "getMemberStatus success: ${memberStatusInfo.value}");
    }).catchError((error) {
      AtmobLog.e(tag, "getMemberStatus error: $error");
    });
  }

  Future<MemberStatusInfo?> getMemberStatus() {
    return atmobApi
        .getMemberStatus(AppBaseRequest())
        .then(HttpHandler.handle(true))
        .then((response) {
      refreshMemberHandler?.cancel();
      if (response != null) {
        KVUtil.putString(keyAccountLoginUserId, response.userId);
        if (!response.permanent && !response.expired) {
          refreshMemberHandler = Timer(
              Duration(
                  milliseconds:
                      response.endTimestamp - response.serverTimestamp),
              () => refreshMemberStatus());
        }
      }
      return response;
    }).then((response) {
      if (response == null) {
        return null;
      }
      MemberStatusInfo memberStatusInfo = MemberStatusInfo(
          level: response.level,
          endTimestamp: response.endTimestamp,
          expired: response.expired,
          permanent: response.permanent);
      this.memberStatusInfo.value = memberStatusInfo;
      return memberStatusInfo;
    });
  }

  static AccountRepository getInstance() {
    return getIt.get<AccountRepository>();
  }

  bool memberIsExpired() {
    return memberStatusInfo.value == null ||
        memberStatusInfo.value?.expired == true;
  }
}

class RequestCodeTooOftenException implements Exception {
  final String message;

  /// 可选的构造函数，支持自定义错误信息
  RequestCodeTooOftenException([this.message = '请求验证码过于频繁']);

  @override
  String toString() => message;
}

class LoginTooOftenException implements Exception {
  final String message;

  /// 可选的构造函数，支持自定义错误信息
  LoginTooOftenException([this.message = '登录过于频繁']);

  @override
  String toString() => message;
}