import 'dart:developer';

import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:equatable/equatable.dart';
import 'package:meta/meta.dart';
import 'package:user_repository/user_repository.dart';

part 'sign_in_event.dart';
part 'sign_in_state.dart';

class SignInBloc extends Bloc<SignInEvent, SignInState> {
  final UserRepository _userRepository;

  SignInBloc({required UserRepository userRepository})
      : _userRepository = userRepository,
        super(SignInInitial()) {
    userRepository.streamUser().listen((authUser) {
      try {
        if (authUser == null) {
          emit(SignInFailure());
        } else {
          emit(SignInSuccess());
        }
      } catch (e) {
        log(e.toString());
      }
    });
    on<SignInRequired>(_onSignInRequired);
    on<SignOutRequired>(_onSignOutRequired);
  }

  void _onSignInRequired(
      SignInRequired event, Emitter<SignInState> emit) async {
    emit(SignInProcess());
    try {
      await _userRepository.signIn(event.email, event.password);
      emit(SignInSuccess());
    } catch (e) {
      log(e.toString());
      emit(const SignInFailure());
    }
  }

  void _onSignOutRequired(
      SignOutRequired event, Emitter<SignInState> emit) async {
    await _userRepository.logOut();
  }
}