middleware.ts

import { getToken } from "next-auth/jwt";
import { NextRequestWithAuth, withAuth } from "next-auth/middleware";
import { NextMiddlewareResult } from "next/dist/server/web/types";
import { NextRequest, NextResponse } from "next/server";

export async function middleware(req: NextRequest) {
  const response = NextResponse.next();
  response.headers.set("Access-Control-Allow-Origin", "*");
  response.headers.set(
    "Access-Control-Allow-Methods",
    "GET, POST, PUT, DELETE, OPTIONS"
  );
  response.headers.set(
    "Access-Control-Allow-Headers",
    "Content-Type, Authorization"
  );

  if (req.method === "OPTIONS") {
    return new Response(null, { status: 204 });
  }
  const token = await getToken({ req, secret: process.env.NEXTAUTH_SECRET });
  const pathname = req.nextUrl.pathname;
  const isAuthenticated = !!token;
  const isLoginPage = pathname === "/login";
  if (isAuthenticated && isLoginPage) {
   
    return NextResponse.redirect(new URL("/", req.url));
  }
  return withAuth(
    (authReq: NextRequestWithAuth): NextMiddlewareResult => {
      return NextResponse.next();
    },
    {
      pages: {
        signIn: "/login", 
      },
      callbacks: {
        authorized: ({ token }) => !!token, 
        
      }
    }
  )(req as NextRequestWithAuth, {} as any);
}

export const config = {
    matcher: ["/hackathons/registration-form/:path*","/login/:path*"],
};