/*
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 * All rights reserved.
 *
 * This source code is licensed under the license found in the
 * LICENSE file in the root directory of this source tree.
 */
import { looksLikeHashed, trim } from './piiUtil.js';

function getNormalizedZipCode(zipCode) {
  let normalizedZipCode = null;

  if (zipCode != null && typeof zipCode === 'string') {
    if (looksLikeHashed(zipCode)) {
      normalizedZipCode = zipCode;
    } else {
      const maybeZIP = trim(String(zipCode).toLowerCase().split('-', 1)[0]);

      if (maybeZIP.length >= 2) {
        normalizedZipCode = maybeZIP;
      }
    }
  }

  return normalizedZipCode;
}

export { getNormalizedZipCode };
