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 /** ===========================================================
  * @file
  *
  * This file is a part of KDE project
  * <a href="https://commits.kde.org/libmediawiki">libmediawiki</a>
  *
  * @date   2011-03-22
  * @brief  a MediaWiki C++ interface for KDE
  *
  * @author Copyright (C) 2011-2012 by Gilles Caulier
  *         <a href="mailto:caulier dot gilles at gmail dot com">caulier dot gilles at gmail dot com</a>
  * @author Copyright (C) 2010 by Ludovic Delfau
  *         <a href="mailto:ludovicdelfau at gmail dot com">ludovicdelfau at gmail dot com</a>
  *
  * This program is free software; you can redistribute it
  * and/or modify it under the terms of the GNU General
  * Public License as published by the Free Software Foundation;
  * either version 2, or (at your option)
  * any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  * GNU General Public License for more details.
  *
  * ============================================================ */
 
 #include "querysiteinfousergroups.h"
 
 
 // Qt includes
 
 #include <QTimer>
 #include <QUrl>
 #include <QUrlQuery>
 #include <QXmlStreamReader>
 
 #include <QNetworkAccessManager>
 #include <QNetworkReply>
 #include <QNetworkRequest>
 
 // Local includes
 
 #include "mediawiki.h"
 #include "job_p.h"
 
 namespace mediawiki
 {
 
 class QuerySiteinfoUsergroupsPrivate : public JobPrivate
 {
 public:
 
     QuerySiteinfoUsergroupsPrivate(MediaWiki& mediawiki, QNetworkAccessManager* const manager, bool includeNumber)
             : JobPrivate(mediawiki),
               manager(manager),
               includeNumber(includeNumber)
     {
     }
 
     QNetworkAccessManager* const manager;
     bool                         includeNumber;
 };
 
 QuerySiteinfoUsergroups::QuerySiteinfoUsergroups(MediaWiki& mediawiki, QObject* const parent)
     : Job(*new QuerySiteinfoUsergroupsPrivate(mediawiki, new QNetworkAccessManager(), false), parent)
 {
 }
 
 QuerySiteinfoUsergroups::~QuerySiteinfoUsergroups()
 {
 }
 
 void QuerySiteinfoUsergroups::setIncludeNumber(bool includeNumber)
 {
     Q_D(QuerySiteinfoUsergroups);
     d->includeNumber = includeNumber;
 }
 
 void QuerySiteinfoUsergroups::start()
 {
     QTimer::singleShot(0, this, SLOT(doWorkSendRequest()));
 }
 
 void QuerySiteinfoUsergroups::doWorkSendRequest()
 {
     Q_D(QuerySiteinfoUsergroups);
 
     // Set the url
     QUrl url = d->mediawiki.url();
     QUrlQuery query;
     query.addQueryItem(QStringLiteral("format"), QStringLiteral("xml"));
     query.addQueryItem(QStringLiteral("action"), QStringLiteral("query"));
     query.addQueryItem(QStringLiteral("meta"),   QStringLiteral("siteinfo"));
     query.addQueryItem(QStringLiteral("siprop"), QStringLiteral("usergroups"));
     if (d->includeNumber)
     {
         query.addQueryItem(QStringLiteral("sinumberingroup"), QString());
     }
     url.setQuery(query);
 
     // Set the request
     QNetworkRequest request(url);
     request.setRawHeader("User-Agent", d->mediawiki.userAgent().toUtf8());
 
     // Send the request
     d->reply = d->manager->get(request);
     connectReply();
 
     connect(d->reply, SIGNAL(finished()),
             this, SLOT(doWorkProcessReply()));
 }
 
 void QuerySiteinfoUsergroups::doWorkProcessReply()
 {
     Q_D(QuerySiteinfoUsergroups);
 
     disconnect(d->reply, SIGNAL(finished()),
                this, SLOT(doWorkProcessReply()));
 
     if (d->reply->error() == QNetworkReply::NoError)
     {
         QList<UserGroup> results;
         QString          name;
         QList<QString>   rights;
         unsigned int     number = 0;
         QXmlStreamReader reader(d->reply);
 
         while (!reader.atEnd() && !reader.hasError())
         {
             QXmlStreamReader::TokenType token = reader.readNext();
 
             if (token == QXmlStreamReader::StartElement)
             {
                 if (reader.name() == QLatin1String("group"))
                 {
                     name = reader.attributes().value(QStringLiteral("name")).toString();
                     if (d->includeNumber)
                     {
                         number = reader.attributes().value(QStringLiteral("number")).toString().toUInt();
                     }
                 }
                 else if (reader.name() == QLatin1String("rights"))
                 {
                     rights.clear();
                 }
                 else if (reader.name() == QLatin1String("permission"))
                 {
                     reader.readNext();
                     rights.push_back(reader.text().toString());
                 }
             }
             else if (token == QXmlStreamReader::EndElement)
             {
                 if (reader.name() == QLatin1String("group"))
                 {
                     UserGroup usergroup;
                     usergroup.setName(name);
                     usergroup.setRights(rights);
 
                     if(d->includeNumber)
                     {
                         usergroup.setNumber(number);
                     }
 
                     results.push_back(usergroup);
                 }
             }
         }
 
         if (!reader.hasError())
         {
             setError(Job::NoError);
             emit usergroups(results);
         }
         else
         {
             setError(QuerySiteinfoUsergroups::XmlError);
         }
     }
     else
     {
         setError(QuerySiteinfoUsergroups::NetworkError);
     }
 
     emitResult();
 }
 
 } // namespace mediawiki