/*
 * CbmMuchNewReadoutBuffer.cxx
 *
 *  Created on: 11.05.2016
 *      Author: vikas@vecc.gov.in
 */


#include "CbmMuchNewReadoutBuffer.h"

	// -----   Initialisation of static variables   ------------------------------
	CbmMuchNewReadoutBuffer* CbmMuchNewReadoutBuffer::fgInstance = NULL;
	// ---------------------------------------------------------------------------

	//This Modify Function will be called from CbmReadoutBuffer::Fill().
	//2 CbmMuchSignal has to be merged and create one, as both hit on the same Detector or Pad within detector deadtime window.
	//SignalStart time and SignalEnd time is already modified.
	//ADC has to be summed up
	//Matches of two also be joined. 
	Int_t CbmMuchNewReadoutBuffer::Modify(CbmMuchNewSignal* oldData1, CbmMuchNewSignal* oldData2,
                                                std::vector<CbmMuchNewSignal*>& newDataList) {

		LOG(INFO) << "Modify called " << ++fCounter << " times." << FairLogger::endl;

		//std::cout << "Modify: old data 1 at t = " << oldData1->GetTimeStart()
		//                      << " to " << oldData1->GetTimeStop() << FairLogger::endl;
		//std::cout << "Modify: old data 2 at t = " << oldData2->GetTimeStart()
		//                      << " to " << oldData2->GetTimeStop() << FairLogger::endl;
		LOG(INFO) << "Modify: old data 1 at t = " << oldData1->GetTimeStart()
                  << " to " << oldData1->GetTimeStop() << FairLogger::endl;
		LOG(INFO) << "Modify: old data 2 at t = " << oldData2->GetTimeStart()
                  << " to " << oldData2->GetTimeStop() << FairLogger::endl;

		CbmMuchNewSignal* firstData  = oldData1;
		CbmMuchNewSignal* secondData = oldData2;
		if ( oldData1->GetTimeStart() > oldData2->GetTimeStart() ) {
			firstData  = oldData2;
			secondData = oldData1;
		}

		/* Create a new signal from the first signal and then correspondingly modify the Match of that signal.
		 * For this add secondData information to the newdata
		 */
		// Create new signal object same as firstData
		CbmMuchNewSignal* newData = new CbmMuchNewSignal(firstData->GetAddress());
		newData->SetTimeStart(firstData->GetTimeStart());
		newData->SetTimeStop(firstData->GetTimeStop());
		// StartTime = Time of the first digi,
		// StopTime = Max stop time of both digis.

		// Add the new pair of time and charge to the map.
		newData->MergeSignal(secondData);
                        
		Double_t stopTime = std::max(oldData1->GetTimeStop(), oldData2->GetTimeStop() );
		newData->SetTimeStop(stopTime);
                        
		//Merge matches of both data, created signal is new therefore contain nothing in the fMatch variable.
		//adding links of firstData->Match to NewMatch
		(newData->GetMatch())->AddLinks(*(secondData->GetMatch()));
		//adding links of SecondData->Match to NewMatch
		(newData->GetMatch())->AddLinks(*(secondData->GetMatch()));

			

		LOG(DEBUG4) << "Modify: new data at t = " << newData->GetTimeStart()
                    << " to " << newData->GetTimeStop() << FairLogger::endl;
		//Add new data object to the result list
		newDataList.push_back(newData);

		return 1;  // Number of return data objects
	}

	// -----   Instance   --------------------------------------------------------
	CbmMuchNewReadoutBuffer* CbmMuchNewReadoutBuffer::Instance() {
		if ( ! fgInstance ) fgInstance = new CbmMuchNewReadoutBuffer();
		return fgInstance;
	}
	// ---------------------------------------------------------------------------

ClassImp(CbmMuchNewReadoutBuffer)