import { source } from '@/lib/source';
import { DocsBody, DocsDescription, DocsPage, DocsTitle } from 'fumadocs-ui/page';
import type { Metadata } from 'next';
import { notFound } from 'next/navigation';
import { createRelativeLink } from 'fumadocs-ui/mdx';
import { getMDXComponents } from '@/mdx-components';
import { Card, Cards } from 'fumadocs-ui/components/card';
import { getPageTreePeers } from 'fumadocs-core/server';

function DocsCategory({ url }: { url: string }) {
  return (
    <Cards>
      {getPageTreePeers(source.pageTree, url).map((peer) => (
        <Card key={peer.url} title={peer.name} href={peer.url}>
          <span className="font-mono">{peer.url}</span>
        </Card>
      ))}
    </Cards>
  );
}

export default async function Page(props: PageProps<'/[[...slug]]'>) {
  const params = await props.params;
  const page = source.getPage(params.slug);
  if (!page) notFound();

  const MDXContent = page.data.body;

  return (
    <DocsPage toc={page.data.toc} full={page.data.full}>
      <DocsTitle>{page.data.title}</DocsTitle>
      <DocsDescription>{page.data.description}</DocsDescription>
      <DocsBody>
        <MDXContent
          components={getMDXComponents({
            // this allows you to link to other pages with relative file paths
            a: createRelativeLink(source, page),
          })}
        />
        {page.data.full ? null : <DocsCategory url={page.url} />}
      </DocsBody>
    </DocsPage>
  );
}

export async function generateStaticParams() {
  return source.generateParams();
}

export async function generateMetadata(
  props: PageProps<'/[[...slug]]'>
): Promise<Metadata> {
  const params = await props.params;
  const page = source.getPage(params.slug);
  if (!page) notFound();

  return {
    title: page.data.title,
    description: page.data.description,
  };
}