CategoryFilterBloc

import 'package:bloc/bloc.dart';
import 'package:equatable/equatable.dart';

part 'category_filter_event.dart';
part 'category_filter_state.dart';

class CategoryFilterBloc
    extends Bloc<CategoryFilterEvent, CategoryFilterState> {
  Set<String> selectedLocation = {};
  List<String> selectedCategory = [];
  List<String> selectedCondition = [];
  List<String> selectedCourier = [];
  CategoryFilterBloc() : super(CategoryFilterState.initial()) {
    on<OnSelectedLocation>(
      (event, emit) {
        selectedLocation.add(event.location);
        emit(
          state.copyWith(
            isFilter: true,
            selectedLocation: selectedLocation,
          ),
        );
      },
    );

    on<UnSelectedLocation>((event, emit) {
      selectedLocation.remove(event.location);
      emit(
        state.copyWith(
          selectedLocation: selectedLocation,
        ),
      );
    });

    on<OnSelectedCategory>((event, emit) {
      selectedCategory.add(event.category);
      emit(
        state.copyWith(
          isFilter: true,
          selectedCategory: selectedCategory,
        ),
      );
    });

    on<OnSelectedCondition>((event, emit) {
      selectedCondition.add(event.condition);
      emit(
        state.copyWith(
          isFilter: true,
          selectedCondition: selectedCondition,
        ),
      );
    });

    on<OnSelectedCourier>((event, emit) {
      selectedCourier.add(event.courier);
      emit(
        state.copyWith(
          isFilter: true,
          selectedCourier: selectedCourier,
        ),
      );
    });
  }
}