[Technical Questions] Sign in with Apple doesn't work -- any fixes we can do on SpeziAccount side?

[mmervecerit]

In what area do you have a technical challenge?

Swift

Description

Currently, signing in with Apple on our deployed app is not working. I remember hearing that signing in with Apple was not working due to a bug in the Spezi Template App, is it still the case? is there a PR fixing this where we can apply to our project?

Reproduction

Download our app on TestFlight https://testflight.apple.com/join/CAuYHs84

Expected behavior

Apple Sign in should work or we remove the option somehow?

Additional context

No response

Code of Conduct

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[vishnuravi]

Hi @mmervecerit, Sign In With Apple should work. What is the problem you are having?

[mmervecerit]

Hi Vishnu, in our previous deployment, the Sign in with Apple button was not responsive. In this deployment, it works even though we didn't change anything about account. Also, when i first tried sign in, it gave me this error below, then i tried again and it worked. So overall, it works but has been spotty.

[vishnuravi]

Thanks for the details @mmervecerit. @lukaskollmer, do you have any idea about what is causing this? I know you had recently made some changes to the identity provider code in Spezi Account.

[lukaskollmer]

@vishnuravi i'm not sure whether my changes affected this; i just updated the AccountDetailsCache to use the new SpeziStorage version (which has a different API but unchanged behaviour). i don't think these changes should somehow affect the login flow (@Supereg what's your take on this?)

i don't think i'd be able to reproduce this locally (sign in with apple isn't available on non-institutional individual developer accounts) but i did some digging in the source code, based on the error message displayed in the screenshot, and it seems that the error isn't coming from SpeziAccount, but rather from SpeziFirebase.
Namely, the error being displayed is a FirebaseAccountError.setupError, which signals that Firebase Auth failed with one of the following Firebase AuthErrorCode values: .operationNotAllowed, .invalidAPIKey, .appNotAuthorized, .keychainError, .internalError (see here).

@mmervecerit maybe there are some error messages / logs corresponding to the login issues online in the Firebase console?