const http = require('http');
const os = require('os');

const PORT = Number(process.env.PORT || 3000);
const VERSION = process.env.APP_VERSION || 'v1';
const startedAt = new Date().toISOString();

const server = http.createServer((req, res) => {
  if (req.url === '/healthz') {
    res.writeHead(200, { 'Content-Type': 'text/plain' });
    res.end('ok');
    return;
  }

  res.writeHead(200, { 'Content-Type': 'application/json; charset=utf-8' });
  res.end(JSON.stringify({
    message: 'Hello World v3 from Gitea + Coolify!',
    version: VERSION,
    hostname: os.hostname(),
    startedAt,
    now: new Date().toISOString(),
    path: req.url
  }, null, 2));
});

server.listen(PORT, '0.0.0.0', () => {
  console.log(`hello-coolify ${VERSION} listening on 0.0.0.0:${PORT}`);
});

process.on('SIGTERM', () => server.close(() => process.exit(0)));