liangchengyou / wow_english

  import 'package:bloc/bloc.dart';

  import '../../common/core/app_config_helper.dart';

  import '../../common/request/dao/system_dao.dart';
  import '../../models/app_version_entity.dart';
  import '../../utils/log_util.dart';

  import 'event.dart';
  import 'state.dart';
  

  class HomeBloc extends Bloc<HomeEvent, HomeState> {
    HomeBloc() : super(HomeState().init()) {

      on<InitEvent>(_init);

      on<ExchangeSuccessEvent>(_exchangeSuccess);

    }
  

    bool exchangeResult = false;
  

    void _init(InitEvent event, Emitter<HomeState> emit) async {

      await _checkUpdate(emit);

    }
  

    void _exchangeSuccess(
        ExchangeSuccessEvent event, Emitter<HomeState> emit) async {
      if (exchangeResult) {
        emit(HomeState());
      }
    }
  

    Future<void> _checkUpdate(Emitter<HomeState> emit) async {

      if (AppConfigHelper.checkedUpdate) {
        return;
      }

      int localVersion = int.parse(await AppConfigHelper.getAppVersion());

      AppVersionEntity? appVersionEntity = await SystemDao.getVersionInfo();
      AppConfigHelper.checkedUpdate = true;
      if (appVersionEntity == null) {

        return;
      }

      Log.d(
          "WQF _checkUpdate appVersionEntity: $appVersionEntity localVersion=$localVersion");

      if (localVersion < int.parse(appVersionEntity.version ?? '0')) {
        emit(UpdateDialogState(

            appVersionEntity.volType == UpdateStrategy.FORCE.name,
            appVersionEntity));

      }

    }
  }