how to implement apple sign in flutter
import 'package:apple_sign_in/apple_sign_in.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/services.dart';
class AuthService {
final _firebaseAuth = FirebaseAuth.instance;
Future<User> signInWithApple({List<Scope> scopes = const []}) async {
// 1. perform the sign-in request
final result = await AppleSignIn.performRequests(
[AppleIdRequest(requestedScopes: scopes)]);
// 2. check the result
switch (result.status) {
case AuthorizationStatus.authorized:
final appleIdCredential = result.credential;
final oAuthProvider = OAuthProvider('apple.com');
final credential = oAuthProvider.credential(
idToken: String.fromCharCodes(appleIdCredential.identityToken),
accessToken:
String.fromCharCodes(appleIdCredential.authorizationCode),
);
final authResult = await _firebaseAuth.signInWithCredential(credential);
final firebaseUser = authResult.user;
if (scopes.contains(Scope.fullName)) {
final displayName =
'${appleIdCredential.fullName.givenName} ${appleIdCredential.fullName.familyName}';
await firebaseUser.updateProfile(displayName: displayName);
}
return firebaseUser;
case AuthorizationStatus.error:
throw PlatformException(
code: 'ERROR_AUTHORIZATION_DENIED',
message: result.error.toString(),
);
case AuthorizationStatus.cancelled:
throw PlatformException(
code: 'ERROR_ABORTED_BY_USER',
message: 'Sign in aborted by user',
);
default:
throw UnimplementedError();
}
}
}