liangchengyou / wow_english

  import 'package:bloc/bloc.dart';

  import 'package:wow_english/pages/unit/widget/home_tab_header_widget.dart';

  import '../../common/request/dao/lesson_dao.dart';

  import '../../common/request/exception.dart';

  import '../../models/course_module_entity.dart';

  import '../../models/course_unit_entity.dart';

  import '../../route/route.dart';

  import '../../utils/loading.dart';
  import '../../utils/toast_util.dart';
  import 'event.dart';
  import 'state.dart';
  
  class UnitBloc extends Bloc<UnitEvent, UnitState> {

    CourseModuleEntity? _moduleEntity;

    CourseModuleEntity? get moduleEntity => _moduleEntity;

    CourseUnitEntity? _unitData;

    CourseUnitEntity? get unitData => _unitData;
  

    bool exchangeResult = false;

  
    UnitBloc(CourseModuleEntity? courseEntity) : super(UnitState().init()) {

      on<RequestUnitDataEvent>(_requestUnitDatas);

    }
  

    void _requestUnitDatas(
        RequestUnitDataEvent event, Emitter<UnitState> emitter) async {

      try {
        await loading(() async {

          _unitData = await LessonDao.courseUnit(event.moduleId);

          emitter(UnitDataLoadState());
        });
      } catch (e) {
        if (e is ApiException) {
          showToast(e.message ?? '请求失败,请检查网络连接');
        }
      }
    }

  
    String? getCourseModuleCode() {
      return _moduleEntity?.code ?? _unitData?.courseModuleCode;
    }
  
    void headerActionEvent(HeaderActionType type) {
      if (type == HeaderActionType.video) {
        pushNamed(AppRouteName.reAfter);
      } else if (type == HeaderActionType.phase) {
        pushNamed(AppRouteName.courseModule);
      } else if (type == HeaderActionType.listen) {
        pushNamed(AppRouteName.listen);
      } else if (type == HeaderActionType.shop) {

        pushNamed(AppRouteName.shop)
            .then((value) => {exchangeResult = value['exchange']});

      } else if (type == HeaderActionType.user) {
        pushNamed(AppRouteName.user);
      }
    }

  }