/*------------------------------------------------------------------------------
--  This file is a part of the SocExplorer Software
--  Copyright (C) 2014, Plasma Physics Laboratory - CNRS
--
--  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 3 of the License, 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.
--
--  You should have received a copy of the GNU General Public License
--  along with this program; if not, write to the Free Software
--  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-------------------------------------------------------------------------------*/
/*--                  Author : Alexis Jeandet
--                     Mail : alexis.jeandet@member.fsf.org
----------------------------------------------------------------------------*/
#include "spwtcppacketserver.h"
#include "ui_spwtcppacketserver.h"
#include <QNetworkInterface>
#include <QByteArray>

SpwTcpPacketServer::SpwTcpPacketServer(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::SpwTcpPacketServer)
{
    ui->setupUi(this);
    this->p_bridge = NULL;
    this->p_server = new QTcpServer();
    connect(this->ui->startServeQpb,SIGNAL(clicked(bool)),SLOT(toggleServer()));
    updateHostIP();
    this->ui->PortLineEdit->setText("2200");
}

SpwTcpPacketServer::~SpwTcpPacketServer()
{
    delete ui;
}

void SpwTcpPacketServer::setBridge(abstractSpwBridge *bridge)
{
    if(this->p_bridge!=NULL)
    {
        disconnect(this,SLOT(pushPacket(char*,int)));
    }
    this->p_bridge = bridge;
    connect(bridge,SIGNAL(pushPacketOverTCP(char*,int)),SLOT(pushPacket(char*,int)));
}

void SpwTcpPacketServer::pushPacket(char *packet, int size)
{
    QByteArray data;
    char sizech[3];
    data.append((char)0);
    sizech[0]=size & 0x0FF;
    sizech[1]=(size>>8) & 0x0FF;
    sizech[2]=(size>>16) & 0x0FF;
    data.append(sizech,3);
    data.append(packet,size);
    for(int i=0;i<connectedClients.count();i++)
    {
        QTcpSocket* soc=connectedClients.at(i);
        if(soc->state()!=QAbstractSocket::ConnectedState)
        {
            connectedClients.removeAt(i);
            delete soc;
        }
        else
        {
            connectedClients.at(i)->write(data);
        }
    }
}

void SpwTcpPacketServer::toggleServer()
{
    if(this->p_server->isListening())
    {
       disconnectServer();
    }
    else
    {
        connectServer();
    }
}

void SpwTcpPacketServer::connectServer()
{
    this->p_server->listen(QHostAddress::Any,this->ui->PortLineEdit->text().toInt());
    this->ui->startServeQpb->setText("Stop Server");
}

void SpwTcpPacketServer::disconnectServer()
{
    this->ui->startServeQpb->setText("Start Server");
    this->p_server->close();
}

void SpwTcpPacketServer::setServerPort(qint32 port)
{
    this->ui->PortLineEdit->setText(QString("%1").arg(port));
}

void SpwTcpPacketServer::newConnection()
{
    this->connectedClients.append(this->p_server->nextPendingConnection());
}

void SpwTcpPacketServer::updateHostIP()
{
    QList<QHostAddress> list = QNetworkInterface::allAddresses();

    for(int nIter=0; nIter<list.count(); nIter++)

    {
        if(!list[nIter].isLoopback())
            if (list[nIter].protocol() == QAbstractSocket::IPv4Protocol )
                this->ui->IPLineEdit->setText(list[nIter].toString());
    }
}