웹훅

{
  "id": "evt_abc123",
  "type": "fortune.generated",
  "created": "2025-01-15T09:00:00Z",
  "data": {
    "dayMaster": "병화",
    "date": "2025-01-15",
    "score": 78,
    "model": "haiku"
  }
}

import crypto from 'crypto';

function verifyWebhook(
  payload: string,
  signature: string,
  secret: string
): boolean {
  const expected = crypto
    .createHmac('sha256', secret)
    .update(payload)
    .digest('hex');

  return crypto.timingSafeEqual(
    Buffer.from(signature),
    Buffer.from(expected)
  );
}

// Express 미들웨어
app.post('/webhooks/saju', (req, res) => {
  const signature = req.headers['x-saju-signature'];
  const isValid = verifyWebhook(
    JSON.stringify(req.body),
    signature,
    process.env.WEBHOOK_SECRET
  );

  if (!isValid) {
    return res.status(401).send('Invalid signature');
  }

  // 웹훅 처리
  handleWebhook(req.body);
  res.status(200).send('OK');
});

curl -X POST https://api.sajuapi.dev/webhooks \
  -H "X-API-Key: bs_live_xxx" \
  -d '{
    "url": "https://your-app.com/webhooks/saju",
    "events": ["fortune.generated", "daily.reset"]
  }'

curl https://api.sajuapi.dev/webhooks \
  -H "X-API-Key: bs_live_xxx"

curl -X DELETE https://api.sajuapi.dev/webhooks/wh_abc123 \
  -H "X-API-Key: bs_live_xxx"

// 매시간 새 운세 데이터 폴링
setInterval(async () => {
  const response = await fetch('/api/daily-fortune', {
    method: 'POST',
    headers: { 'X-API-Key': API_KEY },
    body: JSON.stringify({ saju, userName, date: today })
  });

  const { data, meta } = await response.json();

  if (!meta.cached) {
    // 새 운세 생성됨
    notifyUser(data);
  }
}, 60 * 60 * 1000);