import 'server-only';
import { POSTS, POST_SLUGS, type PostContent } from '@/lib/content/posts';
import { getSection } from '@/lib/db/store';

/**
 * Live blog bodies = in-code `POSTS` defaults overlaid with admin edits.
 *
 * Unlike the `{ fa, en }` section overrides, the blog override stored under the
 * `posts` key is a *partial* map of `slug -> PostContent` holding only the
 * articles that have been edited. Reverting a single article just drops its key
 * from that map, so the in-code default shows through again.
 */

export const POSTS_KEY = 'posts';

/** Only the edited articles (empty when nothing has been customized). */
export function loadPostOverrides(): Record<string, PostContent> {
  try {
    const row = getSection(POSTS_KEY);
    if (row && row.data && typeof row.data === 'object' && !Array.isArray(row.data)) {
      return row.data as Record<string, PostContent>;
    }
  } catch {
    // A missing or locked DB must never crash a public render — defaults only.
  }
  return {};
}

/** Defaults merged with overrides — the full, live article set. */
export function loadAllPosts(): Record<string, PostContent> {
  return { ...POSTS, ...loadPostOverrides() };
}

export function loadPost(slug: string): PostContent | undefined {
  return loadAllPosts()[slug];
}

export function getPostSlugs(): string[] {
  return Object.keys(loadAllPosts());
}

/** A slug is editable only if it ships with a default (and thus a blog card). */
export function isKnownSlug(slug: string): boolean {
  return (POST_SLUGS as string[]).includes(slug);
}