Detecting deleted session using middleware

[elvinasv]

Hello,

I would like to inform the user after they are redirected to the sign-in page if their session has expired or has been deleted, assuming that the sign-out wasn't initiated by the user.

When using withAuth middleware and the token is not available, the current behavior (next-auth v4.22.1) is to redirect the user to pages.signIn page. It seems that no error is added as a query parameter (
https://next-auth.js.org/configuration/nextjs#pages)

The wrap middleware also doesn't help, because it's not invoked if the token is not available.

Now I use the following approach:

export const NEXT_AUTH_API_ROUTE = "/api/auth";

export const middleware: NextMiddleware = async (
    req: NextRequest,
    event: NextFetchEvent
): Promise<Response | void | null> => {
    const token = await getToken({ req });
    
    const { pathname } = req.nextUrl;
    
    if (pathname.includes(NEXT_AUTH_API_ROUTE) || token) {
        return NextResponse.next();
    }

    if (!token && pathname !== routes.login) {
        const loginUrl = new URL(routes.login, req.url);
        loginUrl.searchParams.set("error", "session_not_available");
        return NextResponse.redirect(loginUrl);
    }

    const auth = (await withAuth({
        pages: {
            signIn: routes.login,
        },
    })) as NextMiddlewareWithAuth;

    return auth(req as NextRequestWithAuth, event);
};

Is there a better way to detect a missing session?