#!/usr/bin/env node

'use strict';

const { once } = require('node:events');
const { consturctServer } = require('./server');

const protocolVersion = 1;
const commit = '4581660209c9cdd07669e8bd5bcbe136b7d91e02';
const token = process.env.YMHUT_INTERNAL_TOKEN;
const parentPid = Number(process.env.YMHUT_PARENT_PID || '0');

if (!token || token.length < 32 || !Number.isInteger(parentPid) || parentPid <= 0) {
  process.stderr.write('Invalid sidecar bootstrap environment.\n');
  process.exit(2);
}

async function main() {
  const app = await consturctServer();
  const server = app.listen(0, '127.0.0.1');
  await once(server, 'listening');
  const address = server.address();
  if (!address || typeof address === 'string') throw new Error('Loopback listener did not expose a port.');

  let stopping = false;
  const stop = () => {
    if (stopping) return;
    stopping = true;
    clearInterval(parentWatchdog);
    server.close(() => process.exit(0));
    setTimeout(() => process.exit(0), 1500).unref();
  };

  app.once('ymhut-shutdown', stop);
  process.once('SIGINT', stop);
  process.once('SIGTERM', stop);

  const parentWatchdog = setInterval(() => {
    try {
      process.kill(parentPid, 0);
    } catch {
      stop();
    }
  }, 2000);
  parentWatchdog.unref();

  process.stdout.write(JSON.stringify({
    type: 'ready',
    protocolVersion,
    commit,
    pid: process.pid,
    port: address.port,
  }) + '\n');
}

main().catch((error) => {
  process.stderr.write(`Sidecar startup failed: ${error && error.message ? error.message : 'unknown error'}\n`);
  process.exit(1);
});