[firebase_auth_web] Credentials Persistence

[rdev-software]

On page reload I am loosing currentUser, there is no persistence present ?

[rich-j]

The issue as we see it is that the web and iOS/Android versions behave differently. During iOS restart, restoring the user from a previous session with await firebaseAuth.currentUser() just works - and you get a null if there wasn't a previous user session to restore. During a web restart, the same code always returns null even when there was a previous user session. It would be nice for the Dart Firebase API to behave consistently across platforms.

Since we have other state that tells us that we do have a user, we wait for the state to change:

final maybeUser = await firebaseAuth.onAuthStateChanged
  .timeout(Duration(seconds:5))       // Throws TimeoutException on expiration
  .firstWhere( (user) => user != null )
  .then( (user) => Some( user ) )
  .catchError( (_) => None() );

Note that this code is waiting on Firebase authentication internal initialization to occur. Since currentUser returns a Future it should return a value that includes the knowledge that initialization has completed. The FirebaseApp.configure also returns a Future that could take in to account internal initialization being completed.

using firebase_auth: 0.15.3+1 which brings in firebase_auth_web 0.1.1+4

Flutter (Channel beta, v1.13.6, on Mac OS X 10.15.2 19C57, locale en-US)

[Yacine-Benali]

any updates on this issue ?

[matthewp672261]

Curious on this too. Seems inconsistent in it's implementation.

[Salakar]

Hey 👋

Our rework of the firebase_auth plugin as part of the FlutterFire roadmap was published over a week ago with a ton of fixes and new features. Please could you try the new version and see if this is still an issue for you? If it is then please submit a new up to date GitHub issue.

Support for changing persistence settings was added, see: https://firebase.flutter.dev/docs/auth/usage#persisting-authentication-state

For help migrating to the new plugins please see the new migration guide: https://firebase.flutter.dev/docs/migration