import { Link as I18nLink, LOCALES } from "@/i18n/routing";
import { constructMetadata } from "@/lib/metadata";
import { getWorkShops } from "@/lib/workshop";
import { WorkShop } from "@/types/workShop";
import clsx from "clsx";
import { Metadata } from "next";
import { getTranslations } from "next-intl/server";

// 强制静态生成
export const dynamic = "force-static";

// 明确 Params 类型（静态生成的参数） 
type Params = { locale: string };

type MetadataProps = {
  params: Params;
};

// 生成页面元数据（确保服务端/客户端翻译一致）
export async function generateMetadata({ params }: MetadataProps): Promise<Metadata> {
  const { locale } = params;
  const t = await getTranslations({ locale, namespace: "Workshop" });

  return constructMetadata({
    page: "Workshop",
    title: t("pageTitle", { defaultValue: "车间展示" }), // 使用 next-intl 官方的 defaultValue
    description: t("pageDesc", { defaultValue: "公司车间展示" }),
    locale: locale,
    path: `/workshop`,
    canonicalUrl: `/workshop`,
  });
}

// 生成静态路由参数（多语言）
export async function generateStaticParams() {
  return LOCALES.map((locale) => ({
    locale,
  }));
}

// 空数据组件（纯静态，无动态属性）
function EmptyState() {
  return <div className="py-10 text-center text-gray-500">暂无车间数据</div>;
}

function WorkshopCard({ workshop }: { workshop: WorkShop }) {
  // 为 img 标签添加默认值，避免属性缺失导致不匹配
  const coverSrc = workshop.cover || "/default-workshop-cover.png"; // 兜底封面图
  const coverAlt = workshop.title || "车间封面";

  return (
    <I18nLink href={`/workshop/${workshop.slug}`} locale={workshop.locale}>
      <div className="border rounded-xl overflow-hidden shadow-lg hover:shadow-2xl transition-shadow">
        {/* 封面图：使用原生 img 标签，确保图片尺寸一致 */}
        <div className="relative h-64 w-full">
          <img
            src={coverSrc}
            alt={coverAlt}
            className="object-cover w-full h-full"
            loading="lazy"
          />
        </div>

        {/* 车间信息 */}
        <div className="p-6 bg-white">
          <h2 className="text-2xl font-semibold mb-2 text-gray-800">{workshop.title || "未命名车间"}</h2>
          <p className="text-gray-600 mb-4">{workshop.desc || "暂无描述"}</p>
        </div>
      </div>
    </I18nLink>
  );
}

// 页面主组件（Server Component）
export default async function Page({ params }: { params: Params }) {
  const { locale } = await params;
  // 获取翻译（确保服务端/客户端一致）
  const t = await getTranslations({ locale, namespace: "Workshop" });

  // 获取车间数据（顶层 await，Server Component 原生支持）
  const workShops: WorkShop[] = await getWorkShops(locale);

  // 页面标题翻译兜底
  const pageTitle = t("pageTitle", { defaultValue: "车间展示" });

  return (
    <main className="container mx-auto py-16 px-6 max-w-screen-xl">
      {/* 页面标题 */}
      <h1 className="text-4xl font-extrabold text-center text-gray-900 mb-12">{pageTitle}</h1>

      {/* 展示车间卡片 */}
      <div className={clsx("grid gap-8", workShops.length ? "grid-cols-1 md:grid-cols-2 lg:grid-cols-3" : "")}>
        {workShops.length > 0 ? (
          workShops.map((workshop) => {
            const stableKey = `${workshop.title}-${workshop.locale}`;
            return <WorkshopCard key={stableKey} workshop={workshop} />;
          })
        ) : (
          <EmptyState />
        )}
      </div>
    </main>
  );
}