export function normalizePhoneNumber(phoneNumber: string): string {
  if (!phoneNumber) {
    return phoneNumber;
  }

  const cleaned = phoneNumber.replace(/\D/g, '');

  if (!cleaned) {
    return phoneNumber;
  }

  if (cleaned.startsWith('972')) {
    return cleaned;
  }

  if (cleaned.startsWith('0')) {
    return '972' + cleaned.substring(1);
  }

  return '972' + cleaned;
}