import { cache } from "react";
import { getCMS } from "@/lib/payload/getPayload";

/**
 * Looks up a CMS-configured redirect for a changed slug (see
 * collections/Redirects.ts). Only called from the three dynamic [slug]
 * detail pages right before they'd otherwise 404 — not a catch-all
 * middleware, so this never adds a database lookup to the other ~30 routes
 * that never need it.
 */
export const resolveRedirect = cache(async (fromPath: string): Promise<{ to: string; permanent: boolean } | null> => {
  const payload = await getCMS();
  const { docs } = await payload.find({
    collection: "redirects",
    where: { and: [{ fromPath: { equals: fromPath } }, { enabled: { equals: true } }] },
    limit: 1,
    depth: 0,
    overrideAccess: false,
  });
  const redirect = docs[0];
  if (!redirect) return null;
  return { to: redirect.toPath, permanent: redirect.type !== "temporary" };
});