import { auth } from "@/lib/auth";
import { NextResponse } from "next/server";

export default auth((req) => {
  const isAuthed = !!req.auth?.user;
  const { pathname } = req.nextUrl;

  const isAuthPage = pathname === "/login";
  const isApiAuth = pathname.startsWith("/api/auth");
  const isPublicAsset =
    pathname.startsWith("/_next") ||
    pathname.startsWith("/favicon") ||
    pathname.startsWith("/icon");

  if (isApiAuth || isPublicAsset) return NextResponse.next();

  if (!isAuthed && !isAuthPage) {
    const loginUrl = new URL("/login", req.url);
    if (pathname !== "/") loginUrl.searchParams.set("from", pathname);
    return NextResponse.redirect(loginUrl);
  }

  if (isAuthed && isAuthPage) {
    return NextResponse.redirect(new URL("/chat", req.url));
  }

  return NextResponse.next();
});

export const config = {
  matcher: ["/((?!_next/static|_next/image|favicon.ico|.*\\.(?:png|jpg|jpeg|svg|gif|webp)$).*)"],
};