import { execFileSync, spawnSync } from 'node:child_process';
import { resolve } from 'node:path';

const root = resolve(import.meta.dirname, '../..');
const mode = process.argv[2];
if (!['lint', 'format'].includes(mode)) throw new Error('Usage: node run-changed-code-quality.mjs <lint|format>');

const base = process.env.QUALITY_BASE_REF ?? 'HEAD';
const tracked = execFileSync('git', ['diff', '--name-only', '--diff-filter=ACMR', base, '--'], {
  cwd: root,
  encoding: 'utf8',
});
const untracked = execFileSync('git', ['ls-files', '--others', '--exclude-standard'], { cwd: root, encoding: 'utf8' });
const files = [...new Set(`${tracked}\n${untracked}`.split(/\r?\n/).filter(Boolean))].filter((file) =>
  /^(?:src|api\/src|tools)\/.+\.(?:[cm]?[jt]sx?|css)$/.test(file),
);

if (!files.length) {
  console.log(`No changed code files require ${mode}.`);
  process.exit(0);
}

const args = mode === 'lint' ? files.filter((file) => !file.endsWith('.css')) : ['--check', ...files];
if (mode === 'lint' && !args.length) {
  console.log('No changed code files require lint.');
  process.exit(0);
}
const executable = process.execPath;
const moduleEntry = resolve(
  root,
  mode === 'lint' ? 'node_modules/eslint/bin/eslint.js' : 'node_modules/prettier/bin/prettier.cjs',
);
const result = spawnSync(executable, [moduleEntry, ...args], { cwd: root, stdio: 'inherit' });
process.exit(result.status ?? 1);