import type { Metadata } from "next";
import { Geist } from "next/font/google";
import "./globals.css";
import { createClient } from "@/lib/supabase/server";
import { COLOR_VARS, DEFAULT_COLORS, faviconUrl, SITE_TITLE } from "@/lib/types";
import packageJson from "@/package.json";

// Farben/Logo/Favicon sollen Änderungen sofort widerspiegeln.
export const dynamic = "force-dynamic";

const geistSans = Geist({
  variable: "--font-geist-sans",
  subsets: ["latin"],
});

export async function generateMetadata(): Promise<Metadata> {
  const supabase = await createClient();
  const { data: settings } = await supabase
    .from("settings")
    .select("favicon_path")
    .eq("id", 1)
    .maybeSingle();

  return {
    title: SITE_TITLE,
    description: "Speisekarte der Betriebskantine",
    // Immer explizit setzen: app/favicon.ico würde sonst zusätzlich zu
    // einem eigenen Favicon eingebunden (Next.js kombiniert Datei-
    // Konvention und Metadata statt sie zu ersetzen).
    icons: { icon: faviconUrl(settings?.favicon_path) ?? "/favicon.ico" },
  };
}

export default async function RootLayout({
  children,
}: Readonly<{
  children: React.ReactNode;
}>) {
  const supabase = await createClient();
  const { data: settings } = await supabase
    .from("settings")
    .select("colors")
    .eq("id", 1)
    .maybeSingle();

  const colors: Record<string, string> = {
    ...DEFAULT_COLORS,
    ...((settings?.colors as Record<string, string>) ?? {}),
  };
  const style = Object.fromEntries(
    Object.entries(COLOR_VARS).map(([key, cssVar]) => [cssVar, colors[key]])
  ) as React.CSSProperties;

  return (
    <html lang="de" className={`${geistSans.variable} h-full antialiased`}>
      <body style={style} className="min-h-full flex flex-col">
        {children}
        <footer className="mt-auto px-4 py-2 text-right text-xs text-gray-400 select-none">
          Version {packageJson.version}
        </footer>
      </body>
    </html>
  );
}