middleware.ts

import NextAuth from "next-auth";

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

const { auth } = NextAuth(authConfig);

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

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

  if(isApiAuthRoute) {
    return;
  }

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

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

  return;
});

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