import 'package:bloc/bloc.dart';
import 'package:demo_hive/bloc/reminder_event.dart';
import 'package:demo_hive/bloc/reminder_state.dart';
import 'package:demo_hive/domain/entity/reminder.dart';
import 'package:demo_hive/domain/use_case/reminders_use_case.dart';
import 'package:flutter/cupertino.dart';

class ReminderBloc extends Bloc<ReminderEvent, ReminderState> {

  final RemindersUseCase remindersUseCase;
  ReminderBloc({@required this.remindersUseCase});
  List<ReminderEntity> reminders = [];

  @override
  Stream<ReminderState> mapEventToState(ReminderEvent event) async* {
    if (event is InitialEvent) {
      yield* _mapInitialEventToState();
    } else if (event is AddTitleEvent) {
      yield* _mapAddTitleEventToState(event);
    } else if (event is GetValueTitleEvent) {
      yield* _mapGetValueTitleEventToState(event);
    } else if (event is RemoveEvent) {
      yield* _mapRemoveEventToState();
    } else if (event is RemoveReminderEvent) {
      yield* _mapRemoveReminderEventState();
    } else if (event is RemoveTitle) {
      yield* _mapRemoveTitleEventToState(event);
    }
  }

  Stream<ReminderState> _mapInitialEventToState() async* {
    yield state.update(isLoading: true);
    reminders = await remindersUseCase.getFull();
    yield state.update(list: reminders,isLoading: false);
  }

  Stream<ReminderState> _mapAddTitleEventToState(AddTitleEvent event) async* {
    yield state.update(isLoading: true);
    ReminderEntity reminderEntity = ReminderEntity(title: event.title);
    reminders.add(reminderEntity);
    await remindersUseCase.addNote(reminderEntity);
    yield state.update(list: reminders,isLoading:false);
  }

  Stream<ReminderState> _mapGetValueTitleEventToState(
      GetValueTitleEvent event) async* {
    yield state.update(isLoading: true);
    yield state.update(isEmpty: event.title.isEmpty,isLoading: false);
  }

  Stream<ReminderState> _mapRemoveEventToState() async* {
    yield state.update(isLoading: true);
    yield state.update(isEmpty: true,isLoading: false);
  }

  Stream<ReminderState> _mapRemoveReminderEventState() async* {
    yield state.update(isLoading: true);
    yield state.update(isEmpty: true,isLoading: false);
  }

  Stream<ReminderState> _mapRemoveTitleEventToState(RemoveTitle event) async* {
    // yield LoadingState();
    // //removeNotes(event.index);
    // yield state.update(list: listReminder);
  }

  @override
  // TODO: implement initialState
  ReminderState get initialState => ReminderState(
        isEmpty: true,
        list: [],
      );
}