/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

"use strict";

/**
 * Bug 1457335 - histography.io - Override UA & navigator.vendor
 * WebCompat issue #1804 - https://webcompat.com/issues/1804
 *
 * This site is using a strict matching of navigator.userAgent and
 * navigator.vendor to allow access for Safari or Chrome. Here, we set the
 * values appropriately so we get recognized as Chrome.
 */

if (!navigator.userAgent.includes("Chrome for WebCompat")) {
  console.info(
    "The user agent has been overridden for compatibility reasons. See https://bugzilla.mozilla.org/show_bug.cgi?id=1457335 for details."
  );

  const CHROME_UA = navigator.userAgent + " Chrome for WebCompat";

  const nav = Object.getPrototypeOf(navigator);

  const ua = Object.getOwnPropertyDescriptor(nav, "userAgent");
  ua.get = () => CHROME_UA;
  Object.defineProperty(nav, "userAgent", ua);

  const vendor = Object.getOwnPropertyDescriptor(nav, "vendor");
  vendor.get = () => "Google Inc.";
  Object.defineProperty(nav, "vendor", vendor);
}
