/* Дымовой тест M0: сервер должен быть запущен. `pnpm --filter @idle/server smoke` */
import WebSocket from 'ws';

const seen = [];
await new Promise((resolve, reject) => {
  const ws = new WebSocket('ws://localhost:3000/ws');
  ws.on('open', () => ws.send(JSON.stringify({ t: 'hello', v: 1 })));
  ws.on('message', (d) => {
    seen.push(JSON.parse(String(d)));
    if (seen.length >= 2) {
      ws.close();
      resolve();
    }
  });
  ws.on('error', reject);
  setTimeout(() => reject(new Error('timeout waiting for welcome+snapshot')), 5000);
});

const [welcome, snap] = seen;
console.log('welcome:', JSON.stringify(welcome));
console.log(
  'avatars:',
  snap.avatars.map((a) => `${a.name}@${a.x},${a.y} ${a.face}`).join(' | '),
);
if (welcome.t !== 'welcome' || welcome.v !== 1) throw new Error('bad welcome');
if (snap.t !== 'snapshot' || snap.avatars.length !== 3) throw new Error('bad snapshot');

// неверная версия протокола — сервер обязан закрыть сокет с кодом 4001
const closeCode = await new Promise((resolve) => {
  const ws = new WebSocket('ws://localhost:3000/ws');
  ws.on('open', () => ws.send(JSON.stringify({ t: 'hello', v: 999 })));
  ws.on('close', (code) => resolve(code));
  setTimeout(() => resolve('no-close'), 3000);
});
console.log('close code for wrong version:', closeCode);
if (closeCode !== 4001) throw new Error(`expected close 4001, got ${closeCode}`);

console.log('WS smoke: OK');