Download all liferay open api specs

download-liferay-openapi.mjs

import { writeFile, mkdir } from 'fs/promises';
import { dirname, join } from 'path';

const BASE_URL = 'http://localhost:8080';
const AUTH = 'Basic ' + Buffer.from('test@test.it:password').toString('base64');
const OUT_DIR = './openapi-specs';

console.log('Fetching API list...');
const res = await fetch(`${BASE_URL}/o/openapi`, { headers: { Authorization: AUTH } });
const data = await res.json();
console.log('Response:', JSON.stringify(data, null, 2));

// Extract all openapi.json URLs from the response
const urls = Object.values(data).flat().filter(url => typeof url === 'string' && url.includes('openapi.yaml'));

console.log(`Found ${urls.length} specs`);

await Promise.all(urls.map(async url => {
  const name = url.replace(BASE_URL, "");
  const file = join(OUT_DIR, name);

  console.log(`Downloading ${url} → ${file}`);
  await mkdir(dirname(file), { recursive: true });
  await writeFile(file, await (await fetch(url, { headers: { Authorization: AUTH } })).text());
}))

console.log(`Done! Specs saved to ${OUT_DIR}`);