add metadata and opengraph tags

client/src/app/game/[code]/page.tsx

@@ -2,6 +2,38 @@ import GameAuthWrapper from "@/components/game/GameAuthWrapper";
 import { getGame } from "@/lib/game";
 import { notFound } from "next/navigation";
 
+export async function generateMetadata({ params }: { params: { code: string } }) {
+  const game = await getGame(params.code);
+  if (!game) {
+    return {
+      description: "Game not found",
+      robots: {
+        index: false,
+        follow: false,
+        nocache: true,
+        noarchive: true
+      }
+    };
+  }
+  return {
+    description: `Play or watch a game with ${game.host?.name}`,
+    openGraph: {
+      title: "chessu",
+      description: `Play or watch a game with ${game.host?.name}`,
+      url: `https://ches.su/game/${game.code}`,
+      siteName: "chessu",
+      locale: "en_US",
+      type: "website"
+    },
+    robots: {
+      index: false,
+      follow: false,
+      nocache: true,
+      noarchive: true
+    }
+  };
+}
+
 export default async function Game({ params }: { params: { code: string } }) {
   const game = await getGame(params.code);
   if (!game) {