import { spawn } from 'node:child_process';

function spawnNpmScript(scriptName) {
  const npmExecPath = process.env.npm_execpath;
  if (npmExecPath) {
    return spawn(process.execPath, [npmExecPath, 'run', scriptName], {
      stdio: 'inherit',
      env: process.env,
    });
  }

  const npmCommand = process.platform === 'win32' ? 'npm.cmd' : 'npm';
  return spawn(npmCommand, ['run', scriptName], {
    stdio: 'inherit',
    env: process.env,
    shell: process.platform === 'win32',
  });
}

const backend = spawnNpmScript('dev:backend');
const frontend = spawnNpmScript('dev:frontend');

let shuttingDown = false;

function shutdown(code = 0) {
  if (shuttingDown) {
    return;
  }

  shuttingDown = true;

  if (backend && !backend.killed) {
    backend.kill('SIGTERM');
  }

  if (frontend && !frontend.killed) {
    frontend.kill('SIGTERM');
  }

  process.exit(code);
}

backend.on('exit', (code) => {
  shutdown(code ?? 0);
});

frontend.on('exit', (code) => {
  shutdown(code ?? 0);
});

backend.on('error', (error) => {
  console.error('[dev:all] backend failed:', error);
  shutdown(1);
});

frontend.on('error', (error) => {
  console.error('[dev:all] frontend failed:', error);
  shutdown(1);
});

process.on('SIGINT', () => shutdown(0));
process.on('SIGTERM', () => shutdown(0));