How to import Apple credentials into Firebase Authentication

[kkhys]

I am looking to migrate user credentials from an existing database to Firebase Authentication.

I have successfully imported user information with the help of this document.

https://firebase.google.com/docs/cli/auth

However, even though Google and Facebook imports are supported, Apple imports are not. We are stumped because Apple is a must for our project. Can anyone tell me how to import Apple information into Firebase Authentication?

[kkhys · Accepted solution]

Self resolved.
It was accomplished by using the importUsers function of the Admin API.

https://cloud.google.com/identity-platform/docs/migrating-users#admin-sdk