import { notFound } from "next/navigation";
import type { ReactNode } from "react";
import { getMetro } from "./data";

/**
 * Existence gate for /datacenters/markets/[slug]: resolves the metro before this segment's loading boundary
 * streams, so an unknown slug is a real 404 (not a soft one). Other API failures fall through to the page.
 */
export default async function MarketLayout({ children, params }: { children: ReactNode; params: Promise<{ slug: string }> }) {
  const { slug } = await params;
  const r = await getMetro(slug);
  if (!r.ok && r.status === 404) notFound();
  return <>{children}</>;
}