// Minimal WebSocket echo server for testing Painter stream
// Usage: npm i ws; node mock_ws_server.js
const WebSocket = require('ws');
const wss = new WebSocket.Server({ port: 9980 });
console.log('WS server on ws://localhost:9980');
wss.on('connection', (ws)=>{
  console.log('client connected');
  ws.on('message', (msg)=>{
    try{
      const obj = JSON.parse(msg);
      // log only essentials to keep console tidy
      if(obj.type==='point'){
        process.stdout.write(`• point ${obj.p.x.toFixed(1)},${obj.p.y.toFixed(1)}\r`);
      }else{
        console.log(obj.type);
      }
    }catch(e){}
    // optionally echo back
    // ws.send(msg);
  });
  ws.on('close', ()=>console.log('client closed'));
});