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

const siteName = "Next.js Template";
const siteDescription =
  "A Next.js 16 starter with Tailwind CSS and shadcn/ui, ready to deploy on Vercel.";

// Absolute origin behind `metadataBase`, so Open Graph images resolve to full
// URLs. Vercel injects VERCEL_PROJECT_PRODUCTION_URL on deployed builds.
const siteUrl =
  process.env.NEXT_PUBLIC_SITE_URL ??
  (process.env.VERCEL_PROJECT_PRODUCTION_URL
    ? `https://${process.env.VERCEL_PROJECT_PRODUCTION_URL}`
    : "http://localhost:3000");

// Routes only set their own `title`; the template appends the site name.
export const metadata: Metadata = {
  metadataBase: new URL(siteUrl),
  title: {
    default: siteName,
    template: `%s — ${siteName}`,
  },
  description: siteDescription,
  // Served from public/ so it bypasses the metadata image loader.
  icons: { icon: "/favicon.ico" },
  openGraph: {
    type: "website",
    siteName,
    title: siteName,
    description: siteDescription,
    url: "/",
  },
  twitter: {
    card: "summary_large_image",
    title: siteName,
    description: siteDescription,
  },
};

export default function RootLayout({
  children,
}: Readonly<{
  children: React.ReactNode;
}>) {
  return (
    <html lang="en" className="h-full antialiased">
      <body className="min-h-full flex flex-col">{children}</body>
    </html>
  );
}