Created
April 27, 2019 18:13
-
-
Save felangel/0084e8032c73edb8863f7b5d0aed10e0 to your computer and use it in GitHub Desktop.
[flutter_firebase_login] Login Bloc
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import 'dart:async'; | |
import 'package:bloc/bloc.dart'; | |
import 'package:meta/meta.dart'; | |
import 'package:rxdart/rxdart.dart'; | |
import 'package:flutter_firebase_login/login/login.dart'; | |
import 'package:flutter_firebase_login/user_repository.dart'; | |
import 'package:flutter_firebase_login/validators.dart'; | |
class LoginBloc extends Bloc<LoginEvent, LoginState> { | |
UserRepository _userRepository; | |
LoginBloc({ | |
@required UserRepository userRepository, | |
}) : assert(userRepository != null), | |
_userRepository = userRepository; | |
@override | |
LoginState get initialState => LoginState.empty(); | |
@override | |
Stream<LoginState> transform( | |
Stream<LoginEvent> events, | |
Stream<LoginState> Function(LoginEvent event) next, | |
) { | |
final observableStream = events as Observable<LoginEvent>; | |
final nonDebounceStream = observableStream.where((event) { | |
return (event is! EmailChanged && event is! PasswordChanged); | |
}); | |
final debounceStream = observableStream.where((event) { | |
return (event is EmailChanged || event is PasswordChanged); | |
}).debounce(Duration(milliseconds: 300)); | |
return super.transform(nonDebounceStream.mergeWith([debounceStream]), next); | |
} | |
@override | |
Stream<LoginState> mapEventToState(LoginEvent event) async* { | |
if (event is EmailChanged) { | |
yield* _mapEmailChangedToState(event.email); | |
} else if (event is PasswordChanged) { | |
yield* _mapPasswordChangedToState(event.password); | |
} else if (event is LoginWithGooglePressed) { | |
yield* _mapLoginWithGooglePressedToState(); | |
} else if (event is LoginWithCredentialsPressed) { | |
yield* _mapLoginWithCredentialsPressedToState( | |
email: event.email, | |
password: event.password, | |
); | |
} | |
} | |
Stream<LoginState> _mapEmailChangedToState(String email) async* { | |
yield currentState.update( | |
isEmailValid: Validators.isValidEmail(email), | |
); | |
} | |
Stream<LoginState> _mapPasswordChangedToState(String password) async* { | |
yield currentState.update( | |
isPasswordValid: Validators.isValidPassword(password), | |
); | |
} | |
Stream<LoginState> _mapLoginWithGooglePressedToState() async* { | |
try { | |
await _userRepository.signInWithGoogle(); | |
yield LoginState.success(); | |
} catch (_) { | |
yield LoginState.failure(); | |
} | |
} | |
Stream<LoginState> _mapLoginWithCredentialsPressedToState({ | |
String email, | |
String password, | |
}) async* { | |
yield LoginState.loading(); | |
try { | |
await _userRepository.signInWithCredentials(email, password); | |
yield LoginState.success(); | |
} catch (_) { | |
yield LoginState.failure(); | |
} | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment