export function cleanDomain(raw: string): string {
  if (!raw) return "";
  let domain = raw.trim().toLowerCase();
  // Remove protocol
  domain = domain.replace(/^https?:\/\//i, "");
  // Remove www.
  domain = domain.replace(/^www\./i, "");
  // Remove paths, query strings, fragments
  domain = domain.split("/")[0];
  domain = domain.split("?")[0];
  domain = domain.split("#")[0];
  // Remove trailing dots
  domain = domain.replace(/\.$/, "");
  return domain;
}

export function extractDomainFromUrl(url: string): string {
  try {
    const parsed = new URL(url.startsWith("http") ? url : `https://${url}`);
    return parsed.hostname.replace(/^www\./i, "").toLowerCase();
  } catch {
    return cleanDomain(url);
  }
}

const SOCIAL_DIRS = [
  "linkedin.com", "facebook.com", "instagram.com", "twitter.com",
  "x.com", "yelp.com", "google.com", "maps.google.com", "wikipedia.org",
  "xing.com", "youtube.com", "tiktok.com", "pinterest.com",
];

export function isSocialOrDirectory(domain: string): boolean {
  return SOCIAL_DIRS.some(d => domain === d || domain.endsWith(`.${d}`));
}