void ExperimentController::holdStepCallback(Poco::Timer &)
{
    bool isLast = false;

    {
        Poco::RWLock::ScopedWriteLock lock(*_machineMutex);

        if (_machineState != RunningMachineState)
            return;

        if (_experiment.protocol()->currentStage()->type() != Stage::Meltcurve)
            _dbControl->addFluorescenceData(_experiment, OpticsInstance::getInstance()->getFluorescenceData());

        if (_experiment.protocol()->hasNextStep())
        {
            _experiment.protocol()->advanceNextStep();

            Stage *stage = _experiment.protocol()->currentStage();
            double temperature = stage->currentStep()->temperature();

            if (stage->autoDelta() && stage->currentCycle() > stage->autoDeltaStartCycle())
            {
                temperature += stage->currentStep()->deltaTemperature() * (stage->currentCycle() - stage->autoDeltaStartCycle());

                if (temperature < HeatBlockInstance::getInstance()->minTargetTemperature())
                    temperature = HeatBlockInstance::getInstance()->minTargetTemperature();
                else if (temperature > HeatBlockInstance::getInstance()->maxTargetTemperature())
                    temperature = HeatBlockInstance::getInstance()->maxTargetTemperature();
            }

            if (stage->currentRamp()->collectData())
            {
                OpticsInstance::getInstance()->setCollectData(true, stage->type() == Stage::Meltcurve);

                if (stage->type() == Stage::Meltcurve)
                {
                    _meltCurveTimer->setPeriodicInterval(STORE_MELT_CURVE_DATA_INTERVAL);
                    _meltCurveTimer->start(Poco::TimerCallback<ExperimentController>(*this, &ExperimentController::meltCurveCallback));
                }
            }

            _thermalState = HeatBlockInstance::getInstance()->temperature() < temperature ? HeatingThermalState : CoolingThermalState;

            OpticsInstance::getInstance()->getLedController()->setIntensity(stage->currentRamp()->excitationIntensity());

            HeatBlockInstance::getInstance()->setTargetTemperature(temperature, stage->currentRamp()->rate());
            HeatBlockInstance::getInstance()->enableStepProcessing();
        }
        else
            isLast = true;
    }

    if (!isLast)
        calculateEstimatedDuration();
    else
    {
        complete();
        stop();
    }
}
void ExperimentController::calculateEstimatedDuration()
{
    Experiment experiment = this->experiment();
    double duration = (boost::posix_time::microsec_clock::local_time() - experiment.startedAt()).total_milliseconds() - (experiment.pausedDuration() * 1000);
    double previousTargetTemp = HeatBlockInstance::getInstance()->temperature();

    do
    {
        Stage *stage = experiment.protocol()->currentStage();
        std::time_t holdTime = stage->currentStep()->holdTime();

        double temperature = stage->currentStep()->temperature();

        if (stage->autoDelta() && stage->currentCycle() > stage->autoDeltaStartCycle())
        {
            holdTime += stage->currentStep()->deltaDuration() * (stage->currentCycle() - stage->autoDeltaStartCycle());

            if (holdTime < 0)
                holdTime = 0;

            temperature += stage->currentStep()->deltaTemperature() * (stage->currentCycle() - stage->autoDeltaStartCycle());

            if (temperature < HeatBlockInstance::getInstance()->minTargetTemperature())
                temperature = HeatBlockInstance::getInstance()->minTargetTemperature();
            else if (temperature > HeatBlockInstance::getInstance()->maxTargetTemperature())
                temperature = HeatBlockInstance::getInstance()->maxTargetTemperature();
        }

        double rate = stage->currentRamp()->rate();
        rate = rate > 0 && rate <= kDurationCalcHeatBlockRampSpeed ? rate : kDurationCalcHeatBlockRampSpeed;

        if (previousTargetTemp < temperature)
            duration += (((temperature - previousTargetTemp) / rate) + holdTime) * 1000;
        else
            duration += (((previousTargetTemp - temperature) / rate) + holdTime) * 1000;

        previousTargetTemp = temperature;
    }
    while (experiment.protocol()->advanceNextStep());

    {
        Poco::RWLock::ScopedWriteLock lock(*_machineMutex);
        _experiment.setEstimatedDuration(std::round(duration / 1000));
    }
}