import type { PageContextServer } from 'vike/types';
import type { FeedData } from '../../src/ssr/feedData';

export { data };

type NotFoundAbortReason = {
  head?: FeedData['head'];
  boot?: FeedData['boot'];
};

/**
 * 错误页取数：feed +data 未找到（帖子/板块）时 throw render(404, { head, boot })，
 * 壳层数据经 abortReason 带过来，保证 404 页也渲染完整站点壳与 noindex head。
 */
async function data(pageContext: PageContextServer): Promise<FeedData> {
  if (!import.meta.env.SSR) return { kind: 'notfound' };

  const reason = pageContext.abortReason as NotFoundAbortReason | undefined;
  return {
    kind: 'notfound',
    head: reason?.head,
    boot: reason?.boot,
  };
}