PagerDuty-Integration

const express = require('express');
const crypto = require('crypto');
const app = express();
app.use(express.json());

function verifySignature(req) {
  const secret = Buffer.from(req.headers['x-webhook-secret'] || '');
  const expected = Buffer.from(process.env.WEBHOOK_SECRET || '');
  if (!expected.length) throw new Error('WEBHOOK_SECRET environment variable is not set');
  if (secret.length !== expected.length) return false;
  return crypto.timingSafeEqual(secret, expected);
}

app.post('/pagerduty-alert', async (req, res) => {
  if (!verifySignature(req)) return res.status(401).send('Bad signature');

  const event = req.body?.event;
  if (!event || event.event_type !== 'incident.triggered') {
    return res.sendStatus(200);
  }

  const incident = event.data;
  const title = incident.title || 'Unknown incident';
  const service = incident.service?.summary || 'unknown-service';
  const urgency = incident.urgency || 'high';
  const incidentUrl = incident.html_url || '';

  const orgId = process.env.DEVIN_ORG_ID;
  const response = await fetch(
    `https://api.devin.ai/v3/organizations/${orgId}/sessions`, {
    method: 'POST',
    headers: {
      'Authorization': `Bearer ${process.env.DEVIN_API_KEY}`,
      'Content-Type': 'application/json',
    },
    body: JSON.stringify({
      prompt: [
        `PagerDuty incident triggered: "${title}"`,
        `Service: ${service}`,
        `Urgency: ${urgency}`,
        `Incident URL: ${incidentUrl}`,
        ``,
        `Investigate this incident:`,
        `1. Check recent logs and metrics for ${service}`,
        `2. Identify the root cause of the issue`,
        `3. If the root cause is a code issue, open a hotfix PR`,
        `4. Post your findings to #incidents on Slack`,
      ].join('\n'),
      tags: ['pagerduty-triage', `service:${service}`],
    }),
  });

  const { session_id } = await response.json();
  console.log(`Started Devin session ${session_id} for: ${title}`);
  res.sendStatus(200);
});

app.listen(3000);