// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

/**
 * @fileoverview A helper object used from the "Default Browser" section
 * to interact with the browser.
 */

/**
 * @typedef {{
 *   canBeDefault: boolean,
 *   isDefault: boolean,
 *   isDisabledByPolicy: boolean,
 *   isUnknownError: boolean,
 * }};
 */
let DefaultBrowserInfo;

cr.define('settings', function() {
  /** @interface */
  class DefaultBrowserBrowserProxy {
    /**
     * Get the initial DefaultBrowserInfo and begin sending updates to
     * 'settings.updateDefaultBrowserState'.
     * @return {!Promise<DefaultBrowserInfo>}
     */
    requestDefaultBrowserState() {}

    /*
     * Try to set the current browser as the default browser. The new status of
     * the settings will be sent to 'settings.updateDefaultBrowserState'.
     */
    setAsDefaultBrowser() {}
  }

  /**
   * @implements {settings.DefaultBrowserBrowserProxy}
   */
  class DefaultBrowserBrowserProxyImpl {
    /** @override */
    requestDefaultBrowserState() {
      return cr.sendWithPromise(
          'SettingsDefaultBrowser.requestDefaultBrowserState');
    }

    /** @override */
    setAsDefaultBrowser() {
      chrome.send('SettingsDefaultBrowser.setAsDefaultBrowser');
    }
  }

  cr.addSingletonGetter(DefaultBrowserBrowserProxyImpl);

  return {
    DefaultBrowserBrowserProxy: DefaultBrowserBrowserProxy,
    DefaultBrowserBrowserProxyImpl: DefaultBrowserBrowserProxyImpl,
  };
});