import { SITEMAP_HEADERS, shardIds, toIndex } from '@/components/meta/sitemap-data';

/** Sitemap index at /sitemap.xml: one entry per shard served by /sitemap/<id>.xml. Hourly revalidation. */
export const revalidate = 3600;

export async function GET(): Promise<Response> {
  const ids = await shardIds();
  return new Response(toIndex(ids.map((id) => `/sitemap/${id}.xml`)), { headers: SITEMAP_HEADERS });
}