From 1e7c20add6dee471433507e69d5509c7ca5b7cbe Mon Sep 17 00:00:00 2001
From: Christian Muehlhaeuser <muesli@gmail.com>
Date: Wed, 14 Nov 2012 05:45:57 +0100
Subject: [PATCH] * Added NetworkReply, a simple wrapper for QNetworkReply that
 handles HTTP redirects.

---
 src/libtomahawk/CMakeLists.txt         |  1 +
 src/libtomahawk/utils/NetworkReply.cpp | 88 ++++++++++++++++++++++++++
 src/libtomahawk/utils/NetworkReply.h   | 56 ++++++++++++++++
 3 files changed, 145 insertions(+)
 create mode 100644 src/libtomahawk/utils/NetworkReply.cpp
 create mode 100644 src/libtomahawk/utils/NetworkReply.h

diff --git a/src/libtomahawk/CMakeLists.txt b/src/libtomahawk/CMakeLists.txt
index fc5b8e9ab..be12e1df8 100644
--- a/src/libtomahawk/CMakeLists.txt
+++ b/src/libtomahawk/CMakeLists.txt
@@ -116,6 +116,7 @@ set( libGuiSources
     utils/BinaryExtractWorker.cpp
     utils/SharedTimeLine.cpp
     utils/WebResultHintChecker.cpp
+    utils/NetworkReply.cpp
 
     widgets/AnimatedCounterLabel.cpp
     widgets/BasicHeader.cpp
diff --git a/src/libtomahawk/utils/NetworkReply.cpp b/src/libtomahawk/utils/NetworkReply.cpp
new file mode 100644
index 000000000..4496a272d
--- /dev/null
+++ b/src/libtomahawk/utils/NetworkReply.cpp
@@ -0,0 +1,88 @@
+/* === This file is part of Tomahawk Player - <http://tomahawk-player.org> ===
+ *
+ *   Copyright 2010-2011, Christian Muehlhaeuser <muesli@tomahawk-player.org>
+ *
+ *   Tomahawk 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 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   Tomahawk 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.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with Tomahawk. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "NetworkReply.h"
+
+#include "utils/TomahawkUtils.h"
+#include "utils/Logger.h"
+
+using namespace Tomahawk;
+
+
+NetworkReply::NetworkReply( QNetworkReply* parent )
+    : QObject()
+    , m_reply( parent )
+{
+    m_url = m_reply->url();
+
+    connect( m_reply, SIGNAL( finished() ), SLOT( networkLoadFinished() ) );
+    connect( m_reply, SIGNAL( error( QNetworkReply::NetworkError ) ), SIGNAL( error( QNetworkReply::NetworkError ) ) );
+    connect( m_reply, SIGNAL( destroyed( QObject* ) ), SLOT( deletedByParent() ) );
+}
+
+
+NetworkReply::~NetworkReply()
+{
+    if ( m_reply )
+        m_reply->deleteLater();
+}
+
+
+void
+NetworkReply::deletedByParent()
+{
+    if ( sender() == m_reply )
+    {
+        m_reply = 0;
+        deleteLater();
+    }
+}
+
+
+void
+NetworkReply::load( const QUrl& url )
+{
+    m_url = url;
+    QNetworkRequest request( url );
+
+    Q_ASSERT( TomahawkUtils::nam() != 0 );
+    m_reply = TomahawkUtils::nam()->get( request );
+
+    connect( m_reply, SIGNAL( finished() ), SLOT( networkLoadFinished() ) );
+    connect( m_reply, SIGNAL( error( QNetworkReply::NetworkError ) ), SIGNAL( error( QNetworkReply::NetworkError ) ) );
+    connect( m_reply, SIGNAL( destroyed( QObject* ) ), SLOT( deletedByParent() ) );
+}
+
+
+void
+NetworkReply::networkLoadFinished()
+{
+    if ( m_reply->error() != QNetworkReply::NoError )
+        return;
+
+    QVariant redir = m_reply->attribute( QNetworkRequest::RedirectionTargetAttribute );
+    if ( redir.isValid() && !redir.toUrl().isEmpty() )
+    {
+        tDebug( LOGVERBOSE ) << Q_FUNC_INFO << "Redirected HTTP request to" << redir;
+        m_reply->deleteLater();
+        load( redir.toUrl() );
+        emit redirected();
+    }
+    else
+        emit finished();
+}
diff --git a/src/libtomahawk/utils/NetworkReply.h b/src/libtomahawk/utils/NetworkReply.h
new file mode 100644
index 000000000..5e0a6226b
--- /dev/null
+++ b/src/libtomahawk/utils/NetworkReply.h
@@ -0,0 +1,56 @@
+/* === This file is part of Tomahawk Player - <http://tomahawk-player.org> ===
+ *
+ *   Copyright 2010-2011, Christian Muehlhaeuser <muesli@tomahawk-player.org>
+ *
+ *   Tomahawk 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 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   Tomahawk 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.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with Tomahawk. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef NETWORKREPLY_H
+#define NETWORKREPLY_H
+
+#include <QObject>
+#include <QNetworkReply>
+
+#include "Typedefs.h"
+
+#include "DllMacro.h"
+
+class DLLEXPORT NetworkReply : public QObject
+{
+Q_OBJECT
+
+public:
+    explicit NetworkReply( QNetworkReply* parent = 0 );
+    virtual ~NetworkReply();
+
+    QNetworkReply* reply() const { return m_reply; }
+
+signals:
+    void redirected();
+
+    void finished();
+    void error( QNetworkReply::NetworkError error );
+
+private slots:
+    void deletedByParent();
+    void networkLoadFinished();
+
+private:
+    void load( const QUrl& url );
+
+    QNetworkReply* m_reply;
+    QUrl m_url;
+};
+
+#endif // NETWORKREPLY_H