Is there an easy way to get a provider's sign on url on the server?

[boblauer]

Description 📓

I have a single provider (okta) that I want to redirect the user to, but I want to do this on the server (using Next.js middleware). However, signIn('okta') only works on the client.

Is there an easy way to determine what the url should be to redirect the user server-side? If not, would you be open to a PR that adds a new public method along the lines of getSignInUrl(provider) (would work on both the client and server), which signIn(provider) would use internally?

How to reproduce ☕️

N/A

Contributing 🙌🏽

Yes, I am willing to help implement this feature in a PR