import 'dart:async';

import 'package:aitrainer_app/util/session.dart';
import 'package:bloc/bloc.dart';
import 'package:equatable/equatable.dart';
import 'package:meta/meta.dart';

part 'session_event.dart';
part 'session_state.dart';

class SessionBloc extends Bloc<SessionEvent, SessionState> {
  final Session session;
  SessionBloc({this.session}) : super(SessionInitial());

  @override
  Stream<SessionState> mapEventToState(
    SessionEvent event,
  ) async* {
    try {
      if (event is SessionStart) {
        yield SessionLoading();
        await session.fetchSessionAndNavigate();
        yield SessionReady();
      }
    } on Exception catch(ex) {
      yield SessionFailure(message: ex.toString());
    }

  }

  @override
  Future<void> close() async {
    await this.close(); super.close();
  }
}