import getReadingTime from "reading-time";

const getNormalizedPost = async (post) => {
  const { frontmatter, compiledContent, rawContent, file } = post;
  const ID = file.split("/").pop().split(".").shift();

  return {
    id: ID,

    pubDate: frontmatter.pubDate,
    draft: frontmatter.draft,

    canonical: frontmatter.canonical,
    slug: frontmatter.slug || ID,

    title: frontmatter.title,
    description: frontmatter.description,
    body: compiledContent(),
    image: frontmatter.image,

    excerpt: frontmatter.excerpt,
    authors: frontmatter.authors,
    category: frontmatter.category,
    tags: frontmatter.tags,
    readingTime: Math.ceil(getReadingTime(rawContent()).minutes),
  };
};

const load = async function () {
  const posts = import.meta.glob("~/data/posts/**/*.md", {
    eager: true,
  });

  const normalizedPosts = Object.keys(posts).map(async (key) => {
    const post = await posts[key];
    return await getNormalizedPost(post);
  });

  const results = (await Promise.all(normalizedPosts))
    .sort((a, b) => new Date(b.pubDate).valueOf() - new Date(a.pubDate).valueOf())
    .filter((post) => !post.draft);
  return results;
};

let _posts;

/** */
export const fetchPosts = async () => {
  _posts = _posts || load();

  return await _posts;
};

/** */
export const findPostsByIds = async (ids) => {
  if (!Array.isArray(ids)) return [];

  const posts = await fetchPosts();

  return ids.reduce(function (r, id) {
    posts.some(function (post) {
      return id === post.id && r.push(post);
    });
    return r;
  }, []);
};