/**
 * One IndexNow POST for the URLs in the sitemap. Run after the prod files are published.
 */
const fs = require('fs');
const path = require('path');
const { INDEXNOW_KEY, indexNowBody, sitemapEntries } = require('./sitemap');

async function pingIndexNow(fetchImpl = fetch, urls) {
  const keyPath = path.join(__dirname, '..', 'public', `${INDEXNOW_KEY}.txt`);
  const key = fs.readFileSync(keyPath, 'utf8').trim();
  if (key !== INDEXNOW_KEY) {
    throw new Error(`IndexNow key file does not match ${INDEXNOW_KEY}`);
  }
  const urlList = urls || sitemapEntries().map((entry) => entry.loc);
  const body = indexNowBody(key, urlList);
  const response = await fetchImpl('https://api.indexnow.org/indexnow', {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(body),
  });
  const text = await response.text();
  if (response.status !== 200 && response.status !== 202) {
    throw new Error(`IndexNow ${response.status}: ${text}`);
  }
  return { status: response.status, body };
}

async function main() {
  const result = await pingIndexNow();
  process.stdout.write(`IndexNow ${result.status}\n`);
}

module.exports = { pingIndexNow };

if (require.main === module) {
  main().catch((error) => {
    process.stderr.write(`${error.message}\n`);
    process.exit(1);
  });
}