[Firebase Auth] Signin with Apple does not provide email and fullName. How to retreive them using firebase?

[ExpertKiD]

Hi, I am trying to signinwith Apple on native platforms.

import 'package:firebase_auth/firebase_auth.dart';

Future<UserCredential> signInWithApple() async {
  final appleProvider = AppleAuthProvider();
  if (kIsWeb) {
    await FirebaseAuth.instance.signInWithPopup(appleProvider);
  } else {
    await FirebaseAuth.instance.signInWithProvider(appleProvider);
  }
}

Source: Firebase Federation Auth & Social Login

I have added scopes to appleProvider as well as below:

import 'package:firebase_auth/firebase_auth.dart';

Future<UserCredential> signInWithApple() async {
  final appleProvider = AppleAuthProvider();

    appleProvider.addScope('email');
    appleProvider.addScope('name');

  if (kIsWeb) {
    await FirebaseAuth.instance.signInWithPopup(appleProvider);
  } else {
    await FirebaseAuth.instance.signInWithProvider(appleProvider);
  }
}

Even still, I am only able to fetcha the email but no display name comes at all. How can I request for email and fullname for user? It is required for us to register a new user to our backend.

The documentation lacks the details on how to request those details.

[darshankawar]

I think this is similar to #9662 so please follow up in it for further updates.
Closing as duplicate. If you disagree, write in comments and I'll reopen it.