import type { Metadata } from "next";
import { notFound } from "next/navigation";
import { PolicyPageContent } from "@/components/policy/policy-page-content";
import { getPolicyCatalog, getPolicySlugs } from "@/data/policy";
import { isLocale } from "@/lib/i18n";

export const dynamicParams = false;

export function generateStaticParams() {
  return getPolicySlugs();
}

export async function generateMetadata({ params }: { params: Promise<{ slug: string; locale: string }> }): Promise<Metadata> {
  const { slug, locale } = await params;
  if (!isLocale(locale)) notFound();
  const catalog = await getPolicyCatalog(slug);
  return { title: catalog[locale]?.title ?? "法律信息" };
}

export default async function PolicyPage({ params }: { params: Promise<{ slug: string; locale: string }> }) {
  const { slug, locale } = await params;
  if (!isLocale(locale)) notFound();
  const catalog = await getPolicyCatalog(slug);
  if (!catalog["zh-Hans"]) notFound();
  return <main className="policy-page"><div className="policy-page-inner"><PolicyPageContent catalog={catalog} /></div></main>;
}