import type { MetadataRoute } from "next";
import { INDEXABLE, SITE_URL } from "@/lib/site";

export default function robots(): MetadataRoute.Robots {
  // A preview deployment serves the same copy as production on a throwaway
  // hostname, so it is closed off completely rather than merely discouraged.
  if (!INDEXABLE) {
    return { rules: { userAgent: "*", disallow: "/" } };
  }

  return {
    rules: {
      userAgent: "*",
      allow: "/",
      disallow: "/api/",
    },
    sitemap: `${SITE_URL}/sitemap.xml`,
  };
}