'How to create login function register on firestore

currently i am making a website but i want 3 pages. One for the user one for the poster and one for the admin. But Firebase authentication can only be used to login for users. I want to manually login via firestore but don't know how yet. Hope anyone can show me how to login to the subscription by saving data to firestore.



Solution 1:[1]

Firestore doesn't have any way to perform user sign-in. That's what Firebase Authentication is for. It's unclear from your question why you can't use Firebase Auth, but I suspect you're designing your application in a way that's highly unusual. I suggest rethinking your design.

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Solution Source
Solution 1 Doug Stevenson