/* Дымовой тест M1: сервер должен быть запущен с DEV_HTTP=1, SQLITE_PATH=:memory:.
   `pnpm --filter @idle/server smoke` */
import WebSocket from 'ws';

const BASE = 'http://localhost:3000';
const WS = 'ws://localhost:3000/ws';

function connect(onMsg) {
  const ws = new WebSocket(WS);
  ws.on('open', () => ws.send(JSON.stringify({ t: 'hello', v: 2 })));
  ws.on('message', (d) => onMsg(JSON.parse(String(d))));
  return ws;
}

// 1. welcome + полный снапшот
const first = [];
await new Promise((resolve, reject) => {
  const ws = connect((m) => {
    first.push(m);
    if (first.length >= 2) {
      ws.close();
      resolve();
    }
  });
  ws.on('error', reject);
  setTimeout(() => reject(new Error('timeout waiting welcome+snapshot')), 5000);
});
const [welcome, snap] = first;
console.log('welcome:', JSON.stringify({ t: welcome.t, v: welcome.v, tickMs: welcome.tickMs }));
if (welcome.t !== 'welcome' || welcome.v !== 2) throw new Error(`bad welcome: ${JSON.stringify(welcome)}`);
if (snap.t !== 'snapshot' || snap.nodes.length !== 7) throw new Error(`bad snapshot: ${snap.t}, nodes=${snap.nodes?.length}`);
console.log(`snapshot: деревьев=${snap.nodes.length}, зрителей=${snap.avatars.length}`);

// 2. команда через dev-эндпоинт
const res = await fetch(`${BASE}/dev/command`, {
  method: 'POST',
  headers: { 'content-type': 'application/json' },
  body: JSON.stringify({ name: 'Тестер', text: '!рубить' }),
});
if (!res.ok) throw new Error(`dev command failed: ${res.status} ${await res.text()}`);
console.log('dev command: accepted');

// 3. ждём дельту: аватар «Тестер» должен заспавниться и пойти к дереву
const delta = await new Promise((resolve, reject) => {
  const ws = connect((m) => {
    if (m.t === 'delta' && m.avatars?.some((a) => a.name === 'Тестер')) {
      ws.close();
      resolve(m);
    }
  });
  ws.on('error', reject);
  setTimeout(() => reject(new Error('no delta with Тестер')), 8000);
});
const tester = delta.avatars.find((a) => a.name === 'Тестер');
console.log(`delta: ${tester.name} moving=${tester.moving} action=${tester.action} target=(${tester.tx},${tester.ty})`);
console.log(`events: ${(delta.events ?? []).map((e) => e.k).join(',') || '—'}`);
if (!tester.moving || tester.action !== 'idle') throw new Error('Тестер должен идти к дереву (idle + moving)');

// 4. неверная версия протокола — close 4001
const closeCode = await new Promise((resolve) => {
  const ws = new WebSocket(WS);
  ws.on('open', () => ws.send(JSON.stringify({ t: 'hello', v: 999 })));
  ws.on('close', (code) => resolve(code));
  setTimeout(() => resolve('no-close'), 3000);
});
if (closeCode !== 4001) throw new Error(`expected close 4001, got ${closeCode}`);

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