'use strict';

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 */
var PhotosMimeType = {
  isImage: function isImage(mimeString) {
    return getParts(mimeString)[0] === 'image';
  },
  isJpeg: function isJpeg(mimeString) {
    var parts = getParts(mimeString);
    return PhotosMimeType.isImage(mimeString) && (
    // see http://fburl.com/10972194
    parts[1] === 'jpeg' || parts[1] === 'pjpeg');
  }
};

function getParts(mimeString) {
  return mimeString.split('/');
}

module.exports = PhotosMimeType;