import { Request, Response } from 'express';

export const getRobotsTxt = async (request: Request, response: Response) => {
  const domain = request.hostname;
  let disallow = '';
  const regex = process.env.REGEX_TEMPI_SUB_DOMAIN;
  // if tempi subdomain
  if (regex && new RegExp(regex).test(domain)) {
    disallow = '/';
  }

  const robotsTxt = `User-agent: *
Disallow: ${disallow}
Sitemap: https://${domain}/sitemap.xml`;

  return response.type('text/plain').send(robotsTxt);
};