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kotlinlang

any strategies on authenticating *multiplatform* apps with your own backend?

I have deployed a few compose web apps and i authenticate them using passportjs on my backend. but that is not really flexible in a multiplatform environment ie having web + desktop app

how do you do it?

I've seen tons of websites (not compose web) that switch the login button to 'go to dashboard' after a split second if you are already signed in. wondering if that's a standard way of authenticating apps that can be done in all platforms (not sure how to look that up)

with a quick look supabase does it using jwt.

so launching a website to the server's auth page and then redirecting back to the app with the token seems to be the way to go

<@UPKV9E17S> That's how we do it.
1. Open the authentication web page with a redirect to a deep link in the app, using code + pkce 
2. Retrieve the code from the redirect uri
3. exchange the code with the backend to get the token 

thanks <@U07G78TBDG9>. did you have to implement pkce manually? I roughly have an understanding of it. wonder if there is a ready built solution for it in kotlin

I did yes, but in Java. I haven't yet migrate it to kotlin (will do it soon)

by java you mean for the front end/app?

what about the backend, if u can share

For the frontend/app yes. For the backend, we use Laravel, Auth0 or Microsoft if our client want to use them