// /pages/api/websocket.js
import { Server } from "ws";

export default function handler(req, res) {
  if (!res.socket.server.ws) {
    console.log("Starting WebSocket server");
    const wss = new Server({ server: res.socket.server });

    wss.on("connection", (ws) => {
      console.log("New WebSocket connection");

      ws.on("message", (message) => {
        console.log("Received:", message);
        // Beispielnachricht an den Client senden
        ws.send(JSON.stringify({ message: "Hallo von WebSocket-Server" }));
      });

      // Schließe die Verbindung
      ws.on("close", () => {
        console.log("WebSocket connection closed");
      });
    });

    res.socket.server.ws = wss;
  }
  res.end();
}