Variable Host URL for callback

[jacobaclarke]

Hi,

First off, thank you for the great project!

I am planning on using unique subdomain for each tenant in my app and want the app to correctly redirect on signin. How can do this? I can only seem to get it to redirect to the NEXT_AUTH_URL.

Additionally, I would like to conditionally allow other websites that have been saved in my database to wrap my website so the client a can access the site at clienta.com. Is there any way to dynamically set the redirect url?

Lastly, is there a way to use 'next/link' for the redirect to avoid page reloads?