/****************************************************************************
**
** Copyright (C) 2014 Kurt Pattyn <pattyn.kurt@gmail.com>.
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtWebSockets module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "chatserver.h"
#include "QtWebSockets/QWebSocketServer"
#include "QtWebSockets/QWebSocket"
#include <QtCore/QDebug>
#include <QUrl>

QT_USE_NAMESPACE

//! [constructor]
ChatServer::ChatServer(quint16 port, QObject *parent) :
    QObject(parent),
    m_pWebSocketServer(Q_NULLPTR),
    m_clients()
{
    m_pWebSocketServer = new QWebSocketServer(QStringLiteral("Chat Server"),
                                              QWebSocketServer::NonSecureMode,
                                              this);
    if (m_pWebSocketServer->listen(QHostAddress::Any, port))
    {
        qDebug() << "Chat Server listening on port" << port;
        connect(m_pWebSocketServer, &QWebSocketServer::newConnection,
                this, &ChatServer::onNewConnection);
    }
}

ChatServer::~ChatServer()
{
    m_pWebSocketServer->close();
    qDeleteAll(m_clients.begin(), m_clients.end());
}
//! [constructor]

//! [onNewConnection]
void ChatServer::onNewConnection()
{
    QWebSocket *pSocket = m_pWebSocketServer->nextPendingConnection();

// ********************
// This is wrong!
// Resource Name must be the path!
// ********************
    qDebug() << "onNewConnection: Resource Name: " << pSocket->resourceName();

    connect(pSocket, &QWebSocket::textMessageReceived, this, &ChatServer::processMessage);
    connect(pSocket, &QWebSocket::disconnected, this, &ChatServer::socketDisconnected);

    m_clients << pSocket;

}
//! [onNewConnection]

//! [processMessage]
void ChatServer::processMessage(QString message)
{
    qDebug() << "___________ Process Message ______________";
    QWebSocket *pSender = qobject_cast<QWebSocket *>(sender());
    QUrl qUrl = pSender->requestUrl();

// ********************
// This is wrong!
// URL does not contain host!
// Resource Name must be the path!
// ********************
    qDebug() << "Echo: Request Url: " << pSender->requestUrl().toDisplayString(QUrl::PrettyDecoded);
    qDebug() << "Echo: Resource Name: " << pSender->resourceName();

    qDebug() << "is local file: " << qUrl.isLocalFile();
    qDebug() << "is relative: " << qUrl.isRelative();
    qDebug() << "is valid: " << qUrl.isValid();
    qDebug() << "host: " << qUrl.host();
    qDebug() << "path: " << qUrl.path(QUrl::FullyDecoded);
    qDebug() << "port: " << qUrl.port();
    qDebug() << "query: " << qUrl.query();
    qDebug() << "scheme: " << qUrl.scheme();

    Q_FOREACH (QWebSocket *pClient, m_clients)
    {
        if (pClient != pSender) //don't echo message back to sender
        {
            pClient->sendTextMessage(message);
        }
    }

    qDebug() << "_________ Process Message finished ________";
}
//! [processMessage]

//! [socketDisconnected]
void ChatServer::socketDisconnected()
{
    QWebSocket *pClient = qobject_cast<QWebSocket *>(sender());
    if (pClient)
    {
        m_clients.removeAll(pClient);
        pClient->deleteLater();
    }
}
//! [socketDisconnected]
