middleware.ts

import authConfig from '@/auth.config';
import NextAuth from 'next-auth';
import { DEFAULT_LOGIN_REDIRECT, apiAuthPrefix, authRoutes, publicRoutes } from '@/routes';

const { auth } = NextAuth(authConfig);

export default auth(((req: any) => {
    const { nextUrl } = req;
    const isLoggedIn = !!req.auth;

    const isAPIAuthRoute = nextUrl.pathname.startsWith(apiAuthPrefix);
    const isAuthRoute = authRoutes.includes(nextUrl.pathname);
    const isPublicRoute = publicRoutes.includes(nextUrl.pathname);

    if (isAPIAuthRoute) {
        return null;
    }

    if (isAuthRoute) {
        if (isLoggedIn) {
            return Response.redirect(new URL(DEFAULT_LOGIN_REDIRECT, nextUrl));
        }
        return null;
    }

    if (!isPublicRoute && !isLoggedIn) {
        return Response.redirect(new URL('/auth', nextUrl));
    }

    return null;
}) as any);

export const config = {
    matcher: ['/((?!.+\\.[\\w]+$|_next).*)', '/', '/(api|trpc)(.*)']
};