/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */

#include "nsISupports.idl"

interface mozIDOMWindow;

[scriptable, uuid(4fe082ae-6ff0-4b41-b24f-eaa664f6e46a)]
interface nsIOSReauthenticator: nsISupports {
  /**
   * This interface provides an abstract way to request that the user
   * reauthenticate themselves to the operating system. It may be useful in
   * conjunction with nsIOSKeyStore, whereby consumers of these APIs may
   * consider some secrets too sensitive to access without first
   * reauthenticating the user.
   *
   * Usage:
   *
   * // obtain the singleton nsIOSReauthenticator instance
   * const reauthenticator = Cc["@mozilla.org/security/osreauthenticator;1"]
   *                           .getService(Ci.nsIOSReauthenticator);
   * if (await reauthenticator.asyncReauthenticate()) {
   *   // do something only authenticated users are allowed to do...
   * } else {
   *   // show a "sorry, this isn't allowed" error
   * }
   */

  /**
   * Asynchronously cause the operating system to request that the user
   * reauthenticate. This is typically in the form of a dialog box asking the
   * user for their login password. The actual behaviour of this depends on the
   * OS.
   *
   * @param prompt A short string that may be incorporated in the dialog
   * @param caption A short string that may be shown as the dialog caption (usually Product Name)
   * @param parentWindow Used to associate the OS dialog with the calling window.
   * @return Promise resolving to true if the user successfully authenticated
   *         and false otherwise.
   */
  [implicit_jscontext, must_use]
  Promise asyncReauthenticateUser(in AString prompt, in AString caption, in mozIDOMWindow parentWindow);
};