import { error } from "@sveltejs/kit";
import { getEntryBySlug } from "$lib/cms";
import type { PageServerLoad } from "./$types";

export const load: PageServerLoad = async ({ params, url, setHeaders }) => {
  const { collection, slug } = params;
  const preview = url.searchParams.get("preview") ?? undefined;
  const locale = url.searchParams.get("_locale") ?? undefined;

  const entry = await getEntryBySlug<Record<string, unknown>>(collection, slug, {
    resolve: ["all"],
    preview,
    locale,
  });
  if (!entry) throw error(404, `Entry not found: ${collection}/${slug}`);

  // _type is needed by BlockRenderer's switch. Server backfills it from the
  // route param so the renderer sees the same shape as inside a page row.
  if (typeof entry._type !== "string") {
    (entry as Record<string, unknown>)._type = collection;
  }

  // Embeds: skip search engines, mild caching for public reads.
  setHeaders({
    "x-robots-tag": "noindex",
    "cache-control": preview
      ? "private, no-store"
      : "public, s-maxage=60, stale-while-revalidate=300",
  });

  return { collection, slug, entry, preview: !!preview };
};