import {existsSync} from 'node:fs';
import {spawn} from 'node:child_process';

const [, , scriptPath, ...scriptArgs] = process.argv;

if (!scriptPath) {
  console.error('[run-bash-script] missing script path.');
  process.exit(1);
}

function resolveBashCommand() {
  if (process.env.GENARRATIVE_BASH) {
    return process.env.GENARRATIVE_BASH;
  }

  if (process.platform !== 'win32') {
    return 'bash';
  }

  const candidates = [
    'C:\\Program Files\\Git\\bin\\bash.exe',
    'C:\\Program Files\\Git\\usr\\bin\\bash.exe',
    'C:\\msys64\\usr\\bin\\bash.exe',
  ];

  const matched = candidates.find((candidate) => existsSync(candidate));

  if (matched) {
    return matched;
  }

  return 'bash';
}

const bashCommand = resolveBashCommand();
const child = spawn(bashCommand, [scriptPath, ...scriptArgs], {
  cwd: process.cwd(),
  env: process.env,
  stdio: 'inherit',
  shell: false,
});

child.on('error', (error) => {
  console.error(`[run-bash-script] failed to start bash: ${error.message}`);
  process.exit(1);
});

child.on('exit', (code, signal) => {
  if (signal) {
    console.error(`[run-bash-script] bash exited by signal: ${signal}`);
    process.exit(1);
  }

  process.exit(code ?? 0);
});