period_bloc.dart

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import 'package:flutter_bloc/flutter_bloc.dart';
 
import '../../../../../core/services/service_locator.dart';
import '../../../domain/usecases/get_collection_statistics_usecase.dart';
import 'period_event.dart';
import 'period_state.dart';
 
class PeriodBloc extends Bloc<PeriodEvent, PeriodState> {
  final GetCollectionStatisticsUseCase getCollectionStatisticsUseCase = sl<GetCollectionStatisticsUseCase>();
 
  PeriodBloc() : super(const PeriodInitial()) {
    on<SelectPeriodEvent>(_onSelectPeriod);
    on<GetCollectionStatisticsEvent>(_onGetCollectionStatistics);
    on<GetTodayStatisticsEvent>(_onGetTodayStatistics);
  }
 
  void _onSelectPeriod(SelectPeriodEvent event, Emitter<PeriodState> emit) {
    emit(PeriodLoading());
  }
 
  Future<void> _onGetCollectionStatistics(
    GetCollectionStatisticsEvent event,
    Emitter<PeriodState> emit,
  ) async {
    emit(PeriodLoading());
 
    final result = await getCollectionStatisticsUseCase(
      GetCollectionStatisticsParams(
        userId: event.userId,
        period: event.period,
      ),
    );
 
    result.fold(
      (failure) => emit(PeriodError(
        message: failure.toString(),
      )),
      (statistics) => emit(PeriodLoaded(
        statistics: statistics,
      )),
    );
  }
 
  Future<void> _onGetTodayStatistics(
    GetTodayStatisticsEvent event,
    Emitter<PeriodState> emit,
  ) async {
    emit(TodayStatisticsLoading());
 
    final result = await getCollectionStatisticsUseCase(
      GetCollectionStatisticsParams(
        userId: event.userId,
        period: 'today',
      ),
    );
 
    result.fold(
      (failure) => emit(TodayStatisticsError(
        message: failure.toString(),
      )),
      (statistics) => emit(TodayStatisticsLoaded(
        statistics: statistics,
      )),
    );
  }
}