redditwrapper.cpp Example File

redditclient/redditwrapper.cpp

  /****************************************************************************
  **
  ** Copyright (C) 2016 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the Qt Network Auth module of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:GPL$
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
  ** a written agreement between you and The Qt Company. For licensing terms
  ** and conditions see https://www.qt.io/terms-conditions. For further
  ** information use the contact form at https://www.qt.io/contact-us.
  **
  ** GNU General Public License Usage
  ** Alternatively, this file may be used under the terms of the GNU
  ** General Public License version 3 or (at your option) any later version
  ** approved by the KDE Free Qt Foundation. The licenses are as published by
  ** the Free Software Foundation and appearing in the file LICENSE.GPL3
  ** included in the packaging of this file. Please review the following
  ** information to ensure the GNU General Public License requirements will
  ** be met: https://www.gnu.org/licenses/gpl-3.0.html.
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/

  #include "redditwrapper.h"

  #include <QtGui>
  #include <QtCore>
  #include <QtNetworkAuth>

  const QUrl newUrl("https://oauth.reddit.com/new");
  const QUrl hotUrl("https://oauth.reddit.com/hot");
  const QUrl liveThreadsUrl("https://oauth.reddit.com/live/XXXX/about.json");

  RedditWrapper::RedditWrapper(QObject *parent) : QObject(parent)
  {
      auto replyHandler = new QOAuthHttpServerReplyHandler(1337, this);
      oauth2.setReplyHandler(replyHandler);
      oauth2.setAuthorizationUrl(QUrl("https://www.reddit.com/api/v1/authorize"));
      oauth2.setAccessTokenUrl(QUrl("https://www.reddit.com/api/v1/access_token"));
      oauth2.setScope("identity read");

      connect(&oauth2, &QOAuth2AuthorizationCodeFlow::statusChanged, [=](
              QAbstractOAuth::Status status) {
          if (status == QAbstractOAuth::Status::Granted)
              emit authenticated();
      });
      oauth2.setModifyParametersFunction([&](QAbstractOAuth::Stage stage, QVariantMap *parameters) {
          if (stage == QAbstractOAuth::Stage::RequestingAuthorization && isPermanent())
              parameters->insert("duration", "permanent");
      });
      connect(&oauth2, &QOAuth2AuthorizationCodeFlow::authorizeWithBrowser,
              &QDesktopServices::openUrl);
  }

  RedditWrapper::RedditWrapper(const QString &clientIdentifier, QObject *parent) :
      RedditWrapper(parent)
  {
      oauth2.setClientIdentifier(clientIdentifier);
  }

  QNetworkReply *RedditWrapper::requestHotThreads()
  {
      qDebug() << "Getting hot threads...";
      return oauth2.get(hotUrl);
  }

  bool RedditWrapper::isPermanent() const
  {
      return permanent;
  }

  void RedditWrapper::setPermanent(bool value)
  {
      permanent = value;
  }

  void RedditWrapper::grant()
  {
      oauth2.grant();
  }

  void RedditWrapper::subscribeToLiveUpdates()
  {
      qDebug() << "Susbscribing...";
      QNetworkReply *reply = oauth2.get(liveThreadsUrl);
      connect(reply, &QNetworkReply::finished, [=]() {
          if (reply->error() != QNetworkReply::NoError) {
              qCritical() << "Reddit error:" << reply->errorString();
              return;
          }

          const auto json = reply->readAll();

          const auto document = QJsonDocument::fromJson(json);
          Q_ASSERT(document.isObject());
          const auto rootObject = document.object();
          const auto dataValue = rootObject.value("data");
          Q_ASSERT(dataValue.isObject());
          const auto dataObject = dataValue.toObject();
          const auto websocketUrlValue = dataObject.value("websocket_url");
          Q_ASSERT(websocketUrlValue.isString() && websocketUrlValue.toString().size());
          const QUrl websocketUrl(websocketUrlValue.toString());
          emit subscribed(websocketUrl);
      });
  }