import { fetchRemoteTextAndCreateReadlineInterface } from './fetch-remote-text-by-line';
import tldts from 'tldts';

const isDomainLoose = (domain: string): boolean => {
  const { isIcann, isPrivate, isIp } = tldts.parse(domain);
  return !!(!isIp && (isIcann || isPrivate));
};

const parseFelixDnsmasq = async (url: string | URL): Promise<string[]> => {
  const res: string[] = [];
  for await (const line of await fetchRemoteTextAndCreateReadlineInterface(url)) {
    if (line.startsWith('server=/') && line.endsWith('/114.114.114.114')) {
      const domain = line.replace('server=/', '').replace('/114.114.114.114', '');
      if (isDomainLoose(domain)) {
        res.push(domain);
      }
    }
  }

  return res;
};

export { parseFelixDnsmasq };