/****************************************************************************
**
** Copyright (C) 2016 Kurt Pattyn <pattyn.kurt@gmail.com>.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtWebSockets module of the Qt Toolkit.
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****************************************************************************/
#include "chatserver.h"
#include "QtWebSockets/QWebSocketServer"
#include "QtWebSockets/QWebSocket"
#include <QtCore/QDebug>

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();

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

    m_clients << pSocket;
}
//! [onNewConnection]

//! [processMessage]
void ChatServer::processMessage(QString message)
{
    QWebSocket *pSender = qobject_cast<QWebSocket *>(sender());
    Q_FOREACH (QWebSocket *pClient, m_clients)
    {
        if (pClient != pSender) //don't echo message back to sender
        {
            pClient->sendTextMessage(message);
        }
    }
}
//! [processMessage]

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