import { copyFileSync, chmodSync, mkdirSync, existsSync } from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const root = path.resolve(__dirname, '..');
const hooksDir = path.join(root, '.git', 'hooks');
const src = path.join(root, 'tools', 'hooks', 'pre-commit');
const dest = path.join(hooksDir, 'pre-commit');

if (!existsSync(path.join(root, '.git'))) {
  console.error('Not a git repository. Run from the repo root.');
  process.exit(1);
}

mkdirSync(hooksDir, { recursive: true });
copyFileSync(src, dest);
try { chmodSync(dest, 0o755); } catch { /* Windows */ }
console.log('Installed pre-commit hook → .git/hooks/pre-commit');