import { source } from '@/lib/source';
import {
  DocsBody,
  DocsDescription,
  DocsPage,
  DocsTitle,
  MarkdownCopyButton,
  ViewOptionsPopover,
} from 'fumadocs-ui/layouts/notebook/page';
import { notFound } from 'next/navigation';
import { getMDXComponents } from '@/components/mdx';
import type { Metadata } from 'next';
import { createRelativeLink } from 'fumadocs-ui/mdx';
import { getPageImageUrl, getPageMarkdownUrl, gitConfig, siteUrl } from '@/lib/shared';
import { AskAIAboutPage } from '@/components/ai/ask-page';
import { SiteFooter } from '@/components/site-footer';
import { AskBar } from '@/components/ai/ask-bar';

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

  const MDX = page.data.body;
  const markdownUrl = getPageMarkdownUrl(page).url;

  return (
    <DocsPage
      toc={page.data.toc}
      full={page.data.full}
      tableOfContent={{ style: 'clerk' }}
      // rendered after the previous / next page links
      footer={{
        children: (
          <>
            <SiteFooter />
            <AskBar />
          </>
        ),
      }}
    >
      <DocsTitle>{page.data.title}</DocsTitle>
      <DocsDescription className="mb-0">{page.data.description}</DocsDescription>
      <div className="flex flex-row flex-wrap gap-2 items-center border-b pb-6">
        <MarkdownCopyButton markdownUrl={markdownUrl} />
        <ViewOptionsPopover
          markdownUrl={markdownUrl}
          pageUrl={`${siteUrl}${page.url}`}
          githubUrl={`https://github.com/${gitConfig.user}/${gitConfig.repo}/blob/${gitConfig.branch}/${page.path}`}
        />
        <AskAIAboutPage title={page.data.title} />
      </div>
      <DocsBody>
        <MDX
          components={getMDXComponents({
            // this allows you to link to other pages with relative file paths
            a: createRelativeLink(source, page),
          })}
        />
      </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();

  const isHome = page.slugs.length === 0;
  return {
    title: isHome ? { absolute: `${page.data.title} - Pangolin Docs` } : page.data.title,
    description: page.data.description,
    alternates: {
      canonical: page.url,
      types: { 'text/markdown': getPageMarkdownUrl(page).url },
    },
    openGraph: {
      images: isHome ? '/images/home-social-graph.png' : getPageImageUrl(page).url,
    },
  };
}