---
import { getCollection, render } from "astro:content";
import PostLayout from "@/layouts/PostLayout.astro";

export async function getStaticPaths() {
  const posts = await getCollection("posts", ({ data }) => !data.draft);
  return posts.map((post) => ({
    params: { slug: post.id },
    props: { post },
  }));
}

const { post } = Astro.props;
const { Content, headings } = await render(post);
const tocHeadings = headings.filter((h) => h.depth === 2 || h.depth === 3);

const wordCount = post.body?.split(/\s+/).length ?? 0;
const minutes = Math.max(1, Math.round(wordCount / 220));
const readingTime = `${minutes} min read`;

const allPosts = await getCollection("posts", ({ data }) => !data.draft);
const relatedPosts = allPosts
  .filter((p) => p.id !== post.id)
  .map((p) => {
    let score = 0;
    if (p.data.category === post.data.category) score += 10;
    score += p.data.tags.filter((t) => post.data.tags.includes(t)).length * 3;
    return { post: p, score };
  })
  .filter((s) => s.score > 0)
  .sort((a, b) => b.score - a.score || b.post.data.date.getTime() - a.post.data.date.getTime())
  .slice(0, 3)
  .map((s) => s.post);
---

<PostLayout
  title={post.data.title}
  description={post.data.description}
  date={post.data.date}
  modified={post.data.modified}
  category={post.data.category}
  tags={post.data.tags}
  image={post.data.image}
  readingTime={readingTime}
  headings={tocHeadings}
  relatedPosts={relatedPosts}
>
  <Content />
</PostLayout>