Send provider name back when using Providers

[nicolas-besnard]

Hi 👋 !

Right now, when I use OAuth providers (Google, Github, Discord etc...) on the callback, it's hard to know from which provider you just came back.

Using NextJS, when looking at the getSession(), I got back a provider_token and provider_refresh_token, but there's no information about the provider that information is coming from.

For my use case, I need to save those tokens (token + refresh token) in the database to be able to query those providers for additional information later.

I can think of multiple solutions:

• In the getSession returns the provider tokens with a provider key to identify the specific payload
• Have a way to automatically save the tokens in a table (like we have for the "profile" tutorial
• Provide a new hook. As Gotrue is already extracting those data, it would be a matter of changing the callback on Supabase to provide this information, then changing the format of the save Sessions in localStorage

I am all into implementing this if required, I just think we need to align on how to do it, and the best way to do it.

I can see 2 use cases for people that are using multiple providers for more than just authentication:

• You want to persist the tokens server side to do things later (e.g. get the latest Github Action status while posting a message to Discord)
• You want to do use the tokens client side to do whatever you want