Disable sign-up user but only then if user is not authenticated
Hello, I have a simple React-App that use Supabase for backend. In this application I have sign-up feature, but only when the user is logged in. Unfortunately, this works only on client-side. Disable sign-up option on Supabase also is not a good solution, because this disables user registration completely. So my question is whether it is possible to enable sign-up only if user is logged-in on server-side?
