shadcn-ui/apps/www/app/docs/[[...slug]]/page.tsx

import { notFound } from "next/navigation"
import { allDocs } from "contentlayer/generated"

import "@/styles/mdx.css"
import Link from "next/link"

import { getTableOfContents } from "@/lib/toc"
import { Icons } from "@/components/icons"
import { Mdx } from "@/components/mdx"
import { DocsPageHeader } from "@/components/page-header"
import { DocsPager } from "@/components/pager"
import { DashboardTableOfContents } from "@/components/toc"
import { Separator } from "@/components/ui/separator"

interface DocPageProps {
  params: {
    slug: string[]
  }
}

export async function generateStaticParams(): Promise<
  DocPageProps["params"][]
> {
  return allDocs.map((doc) => ({
    slug: doc.slugAsParams.split("/"),
  }))
}

export default async function DocPage({ params }: DocPageProps) {
  const slug = params?.slug?.join("/") || ""
  const doc = allDocs.find((doc) => doc.slugAsParams === slug)

  if (!doc) {
    notFound()
  }

  const toc = await getTableOfContents(doc.body.raw)

  return (
    <main className="relative py-6 lg:gap-10 lg:py-10 xl:grid xl:grid-cols-[1fr_300px]">
      <div className="mx-auto w-full min-w-0">
        <DocsPageHeader heading={doc.title} text={doc.description}>
          {doc.radix ? (
            <div className="flex items-center space-x-2 pt-4">
              {doc.radix?.link && (
                <Link
                  href={doc.radix.link}
                  target="_blank"
                  rel="noreferrer"
                  className="inline-flex items-center rounded-full bg-slate-100 px-2.5 py-1 text-xs font-semibold text-slate-900 transition-colors hover:bg-slate-700 hover:text-slate-50"
                >
                  <Icons.radix className="mr-1 h-3 w-3" />
                  Radix UI
                </Link>
              )}
              {doc.radix?.api && (
                <Link
                  href={doc.radix.api}
                  target="_blank"
                  rel="noreferrer"
                  className="inline-flex items-center rounded-full bg-slate-100 px-2.5 py-1 text-xs font-semibold text-slate-900 transition-colors hover:bg-slate-700 hover:text-slate-50"
                >
                  API Reference
                </Link>
              )}
            </div>
          ) : null}
        </DocsPageHeader>
        <Mdx code={doc.body.code} />
        <Separator className="my-4 md:my-6" />
        <DocsPager doc={doc} />
      </div>
      <div className="hidden text-sm xl:block">
        <div className="sticky top-16 -mt-10 max-h-[calc(var(--vh)-4rem)] overflow-y-auto pt-10">
          <DashboardTableOfContents toc={toc} />
        </div>
      </div>
    </main>
  )
}