#include "ModbusCCMgr.h"
#include "ZTLog.h"
#include "EngLog.h"
#include "ModbusCCDefs.h"
#include <QDateTime>


CModbusCCMgr::CModbusCCMgr(CModbusRepository *Repo, int ModbusPort, int DevID) :
    CModbusBackend(Repo)
{
    mModbusServer = new QTcpServer();
    mDeviceID = DevID;
    mModbusPort = ModbusPort;

    connect(mModbusServer,SIGNAL(newConnection()),this,SLOT(NewModbusConnection()));
    mModbusMode = MODBUS_SLAVE_MODE;

    mZTWatchdogTimer = new QTimer;
    mZTWatchdogTimer->setSingleShot(false);
    mZTWatchdogTimer->setInterval(MODBUS_ZT_WATCHDOG_TIMEOUT);
    connect(mZTWatchdogTimer,SIGNAL(timeout()),this,SLOT(ModbusZTWatchdogTimeout()));

    mCCWatchdogTimer = new QTimer;
    mCCWatchdogTimer->setSingleShot(true);
    mCCWatchdogTimer->setInterval(MODBUS_CC_WATCHDOG_TIMEOUT);
    connect(mCCWatchdogTimer,SIGNAL(timeout()),this,SLOT(ModbusCCWatchdogTimeout()));

    mZTWatchdog = 0;
    mCCWatchdogState = 0;
    mCCLinkState = false;
    mLastDateTime = 0;
}

CModbusCCMgr::~CModbusCCMgr()
{
    delete mModbusServer;

    delete mZTWatchdogTimer;
    delete mCCWatchdogTimer;
}

int CModbusCCMgr::StartModbusCCServer()
{
    mModbusServer->listen(QHostAddress::Any,mModbusPort);
    CZTLog::instance()->AddLogString(QString("Serveur Modbus Commande Centralisée démarré sur le port %1").arg(mModbusPort),true);
    return 1;
}

void CModbusCCMgr::NewModbusConnection()
{
    mModbusTCPSocketHandle = mModbusServer->nextPendingConnection();
    if(mModbusTCPSocketHandle != 0)
    {
        mDataLinkValid = true;
        connect(mModbusTCPSocketHandle,SIGNAL(readyRead()),this,SLOT(ModbusDataReady()));
        connect(mModbusTCPSocketHandle,SIGNAL(disconnected()),this,SLOT(ConnectionLost()));
        //qDebug("ModbusCC: Connection with CC established");
        CZTLog::instance()->AddLogString(QString("Connection Modbus avec la CC établie.  IP[%1]").arg(mModbusTCPSocketHandle->peerAddress().toString()),true);
        mZTWatchdogTimer->start();
        mCCWatchdogTimer->start(MODBUS_CC_WATCHDOG_TIMEOUT*2);  //Allow twice the time for the first watchdog reset.
        mCCLinkState = true;

        emit ModbusCCConnected();
    }
}

void CModbusCCMgr::ConnectionLost()
{
    ModbusLinkDisconnected();
    mZTWatchdogTimer->stop();
    mCCWatchdogTimer->stop();
    emit ModbusCCDisconnected();
    CZTLog::instance()->AddLogString(QString("Connection Modbus (Ethernet) avec la CC rompue."),true);
}

bool CModbusCCMgr::IsModbusConnected()
{
    return mDataLinkValid;
}

void CModbusCCMgr::RegistersDatabaseUpdated(quint16 StartAddress, quint16 Length)
{
    Q_UNUSED(StartAddress)
    Q_UNUSED(Length)


    qint16 WD = mModbusRepo->GetSingleReg(MODBUS_CC_WATCHDOG_BASE_REG_ADD);
  //  qDebug("WD = %d",WD);
    if(WD != mCCWatchdogState)
    {
        mCCWatchdogTimer->start(MODBUS_CC_WATCHDOG_TIMEOUT);  //The watchdog has toggled.  Kick the timer.
        mCCWatchdogState = WD;
        if(mCCLinkState == false)
        {
            mCCLinkState = true;
            CZTLog::instance()->AddLogString("Lien de communication (Watchdog) avec la CC rétabli",true);
        }
     }

    qint16 NTPWrite = mModbusRepo->GetSingleReg(MODBUS_CC_CLK_UPDATE_BASE_REG_ADD);
    if(NTPWrite == 1)
    {
        //Update date & time...
        bool OK;
        QList<qint16> DateTime = mModbusRepo->GetRegs(MODUBS_CC_CLK_SEC_BASE_REG_ADD,4,&OK);
        if(OK)
        {
            qint8 Secs, Minutes, Hours, Month, Day;
            Secs = (qint8)(DateTime.at(0) >> 8);
            Minutes = (qint8)(DateTime.at(1) & 0x00FF);
            Hours = (qint8)(DateTime.at(1) >> 8);
            Day = (qint8)(DateTime.at(2) & 0x00FF);
            Month = (qint8)(DateTime.at(2) >> 8);
            qint16 Year = DateTime.at(3);

            QDateTime NetworkTime;
            NetworkTime.setTimeSpec(Qt::UTC);
            NetworkTime.setDate(QDate(Year,Month,Day));
            NetworkTime.setTime(QTime(Hours,Minutes,Secs));
           // QDateTime MyTime = NetworkTime.toLocalTime();

            if(mLastDateTime != 0)
            {
                delete mLastDateTime;
            }
            mLastDateTime = new QDateTime(NetworkTime.toLocalTime());
            emit ModbusDateTimeReceived(mLastDateTime);

            qDebug("Date & Heure reçue du SACL: %s",mLastDateTime->toString("yyyy-MM-dd hh:mm:ss").toAscii().data());
            mModbusRepo->WriteSingleReg(MODBUS_CC_CLK_UPDATE_BASE_REG_ADD,0);
        }

    }

    emit RepoHasChanged();
}

void CModbusCCMgr::ModbusRequestException(quint8 ExceptionCode, quint8 FctCode)
{
    //qDebug("Modbus CC: Request exception occured.  ExceptCode: [%d], FctCode: [%d]",ExceptionCode,FctCode);
    CEngLog::instance()->AddLogString(QString("Modbus CC: Exception de requête.  ExceptionCode[%1], FctCode[%2]").arg(ExceptionCode).arg(FctCode));
}

void CModbusCCMgr::ModbusCCWatchdogTimeout()
{
    CZTLog::instance()->AddLogString("Perte du lien de communication avec la CC: Watchdog CC Expiré",true);
    mCCLinkState = false;
}

void CModbusCCMgr::ModbusZTWatchdogTimeout()
{
    qint16 WD = mZTWatchdog;
    mModbusRepo->WriteSingleReg(MODBUS_ZT_WATCHDOG_REG_ADD,WD);
    if(mZTWatchdog == 1)
    {
        mZTWatchdog = 0;
    }
    else
    {
        mZTWatchdog = 1;
    }
}