import 'dart:async';
import 'package:aitrainer_app/model/exercise.dart';
import 'package:aitrainer_app/repository/exercise_repository.dart';
import 'package:bloc/bloc.dart';
import 'package:equatable/equatable.dart';
import 'package:meta/meta.dart';

part 'exercise_log_event.dart';

part 'exercise_log_state.dart';

class ExerciseLogBloc extends Bloc<ExerciseLogEvent, ExerciseLogState> {
  final ExerciseRepository exerciseRepository;
  @override
  ExerciseLogBloc({this.exerciseRepository}) : super(ExerciseLogInitial());


  @override
  Stream<ExerciseLogState> mapEventToState(ExerciseLogEvent event) async* {
    try {
      if (event is ExerciseLogLoad) {
        yield ExerciseLogLoading();
        yield ExerciseLogReady();
      } else if ( event is ExerciseLogDelete ) {
        yield ExerciseLogLoading();
        exerciseRepository.exerciseList.remove(event.exercise);
        await exerciseRepository.deleteExercise(event.exercise);
        yield ExerciseLogReady();
      }
    } on Exception catch (e) {
      yield ExerciseLogError(message: e.toString());
    }
  }
}