liangchengyou / wow_english

  import 'dart:js';
  

  import 'package:flutter/cupertino.dart';

  import 'package:flutter_bloc/flutter_bloc.dart';

  import 'package:flutter_easyloading/flutter_easyloading.dart';
  

  import '../../../../common/request/api_response/api_response_entity.dart';
  import '../../../../common/request/apis.dart';
  import '../../../../common/request/request.dart';
  import '../../../../common/request/request_client.dart';
  import '../../../../models/user_entity.dart';

  
  part 'login_event.dart';
  part 'login_state.dart';
  

  enum LoginType {
    ///密码登陆
    pwd,

    ///验证码登陆
    sms,
  }
  

  class LoginBloc extends Bloc<LoginEvent, LoginState> {

    bool _canLogin = false;

    ///是否可以发送验证码
    bool _canSendSms = false;

    ///是否阅读协议
    bool _agreement = false;

    ///登陆方式

    //LoginType _loginType = LoginType.sms;
    bool _isSmsLoginType = true;

    final TextEditingController phoneNumController = TextEditingController();
    final TextEditingController checkNumController = TextEditingController();

    bool get canLogin => _canLogin;

    bool get agreement => _agreement;

  
    //LoginType get loginType => _loginType;
  
    bool get isSmsLoginType => _isSmsLoginType;
  

    bool get canSendSms => _canSendSms;

  
    LoginBloc() : super(LoginInitial()) {
      on<RequestLoginEvent>(_requestLoginApi);

      on<ChangeLoginTypeEvent>(_changeLoginType);
      on<PhoneNumChangeEvent>(_changePhoneNumber);
      on<AgreementChangeEvent>(_agreementTypeChange);

      on<CheckFieldChangeEvent>(_checkFiledChange);

      on<RequestSmsCodeEvent>(_requestSmsCodeApi);

    }
  

    ///请求登陆

    void _requestLoginApi(RequestLoginEvent event, Emitter<LoginState> emitter) async {

      var phoneNumber = phoneNumController.text;
      if (phoneNumber.isEmpty) {
        EasyLoading.showToast('号码不能为空');
        return;
      }
  
      var checkNumber = checkNumController.text;
      if (checkNumber.isEmpty) {
        var text = _isSmsLoginType ? '密码' : '验证码';
        EasyLoading.showToast('$text不能为空');
        return;
      }
      var checkKey = _isSmsLoginType ? 'smsCode' : 'password';
      var type = _isSmsLoginType ? 'sms_code' : 'pwd';
  
      request(() async {
        var params = {'phoneNum': phoneNumber, 'type': type, checkKey: checkNumber};
        await requestClient.post(
          Apis.login,
          data: params,
          onResponse: (ApiResponse<UserEntity> response) {
            print('response=$response');
            // todo 持久化用户对象
            // todo 写入全局对象
            //emitter.call(LoginResultChangeState());
          },
          onError: (e) {
            EasyLoading.showToast('登陆失败：${e.message}');
            return true;

          },

        );
      });

    }
  

    ///请求验证码
    void _requestSmsCodeApi(RequestSmsCodeEvent event, Emitter<LoginState> emitter) async {
  
    }
  

    ///切换登陆方式
    void _changeLoginType(ChangeLoginTypeEvent event, Emitter<LoginState> emitter) async {

      if (_isSmsLoginType) {
        _isSmsLoginType = false;

      } else {

        _isSmsLoginType = true;

      }
      checkNumController.clear();
      if (_loginStateChange()) {
        emitter(LoginEventChangeState());
      }
      emitter(LoginTypeChangeState());
    }
  
    ///手机号输入
    void _changePhoneNumber(PhoneNumChangeEvent event, Emitter<LoginState> emitter) async {

      if (phoneNumController.text.isNotEmpty) {

        if (!_canSendSms) {
          _canSendSms = true;
          emitter(SmsSendTypeChangeState());
        }
        if (_loginStateChange()) {
          emitter(LoginEventChangeState());
        }
      } else {
        if (_canSendSms) {
          _canSendSms = false;
          emitter(SmsSendTypeChangeState());
        }
        if (_loginStateChange()) {
          emitter(LoginEventChangeState());
        }
      }
    }
  
    ///验证码/密码输入变化

    void _checkFiledChange(CheckFieldChangeEvent event, Emitter<LoginState> emitter) async {

      if (_loginStateChange()) {
        emitter(LoginEventChangeState());
      }
    }
  
    ///是否阅读协议
    void _agreementTypeChange(AgreementChangeEvent event, Emitter<LoginState> emitter) async {
      _agreement = !_agreement;
      emitter(AgreementTypeChangeState());
      if (_loginStateChange()) {
        emitter(LoginEventChangeState());
      }
    }
  

    ///登陆状态判断

    bool _loginStateChange() {
      if (_agreement) {
        if (phoneNumController.text.isNotEmpty && checkNumController.text.isNotEmpty) {
          if (!_canLogin) {
            _canLogin = true;
            return true;
          }
        } else {
          if (_canLogin) {
            _canLogin = false;
            return true;
          }
        }
      } else {
        if (_canLogin) {
          _canLogin = false;
          return true;
        }
      }
      return false;

    }
  }