Is it possible to use session.update when the session state is unauthenticated?

[Poolshark]

Hi!

I am trying to add tenant information, which is expressed via the hostname, to the session. Since this is not critical information but used across multiple components (server and client) throughout the app, this would come in super handy.

Note: I need this for both, authenticated and unauthenticated user sessions.

So far, I have a client component which is wrapped by the SessionProvider. Inside this component I have the following

"use client";

// import statements

export const SessionUpdateComponent = () => {
  const session = useSession();
  const [test, setTest] = useState<any>();
  
  useEffect(() => {
    if (window) {
      const host = window.location.host;
      
      if (host !== session.data?.currentHost) {
        session.update({cHostUpdate: host}).then(res => setTest(res)).catch(err => setTest(err));
      }
    }
  },[])
}

console.log("Session", session);
console.log("Result", test);

// Return statements
// ...

In the jwt callback, I would then fetch some tenant specific data from the database, e.g. via Prisma

// auth.ts

export const { auth, handlers, signIn, signOut } = NextAuth({
  callbacks: {
    jwt: async ({ user, token, trigger, session }) => {
      if (trigger === "update") {
        if (session.cHostUpdate) {
          const tenant = db.tenant.findUnique({
            where: {
              host: session.cHostUpdate, 
            }
          });
          
          return {
            ...token,
            currentTenant: tenant
          };
        }
      }
    },
    session: async ({ session, token }) => {
      return {
        ...session,
	user: token.user,
        currentTenant: token.currentTenant,
      };
    },
    // ... more auth stuff
 });

I get the state variable test updated but unfortunately the jwt callback in my auth.ts never gets invoked. although the comment states:

This callback is called whenever a JSON Web Token is created (i.e. at sign in) or updated (i.e whenever a session is accessed in the client).

So if I'm not wrong I should be able to update the session regardless of an existing user session and/or token, right?

What am I doing wrong here?

Thanks! Any help appreciated! 🙌