import type { Metadata } from "next";
import { headers } from "next/headers";
import "./globals.css";

export async function generateMetadata(): Promise<Metadata> {
  const headerStore = await headers();
  const host = headerStore.get("x-forwarded-host") ?? headerStore.get("host") ?? "localhost:3000";
  const protocol = headerStore.get("x-forwarded-proto") ?? (host.startsWith("localhost") ? "http" : "https");
  const origin = `${protocol}://${host}`;

  return {
    title: "智能称重终端｜沃尔核材",
    description: "面向生产现场的废料智能称重、稳定采样与数据追溯应用。",
    icons: {
      icon: "/favicon.svg",
      shortcut: "/favicon.svg",
    },
    openGraph: {
      title: "智能称重终端",
      description: "稳定采样 · 精准记录 · 数据可追溯",
      images: [{ url: `${origin}/og.png`, width: 1536, height: 864, alt: "智能称重终端" }],
    },
    twitter: {
      card: "summary_large_image",
      title: "智能称重终端",
      description: "稳定采样 · 精准记录 · 数据可追溯",
      images: [`${origin}/og.png`],
    },
  };
}

export default function RootLayout({
  children,
}: Readonly<{
  children: React.ReactNode;
}>) {
  return (
    <html lang="zh-CN">
      <body>{children}</body>
    </html>
  );
}