////////////////////////////////////////////////////////////////////////////////
// Description:
//   This is a primitive scorer class for scoring energy deposit.
//
// Created: 2005-11-14  Tsukasa ASO, Akinori Kimura.
// 2010-07-22   Introduce Unit specification.
//
///////////////////////////////////////////////////////////////////////////////
/**
 * @file SolidPSTimeEnd.cc
 * @author: (modified by) Ibrahin Pinera
 * @date 2016 SoLid - University of Antwerp
 */


#include "SolidPSTimeEnd.hh"

// G4PSEnergyDeposit
#include "G4UnitsTable.hh"


SolidPSTimeEnd::SolidPSTimeEnd(G4String name, G4int depth)
  :G4VPrimitiveScorer(name,depth),HCID(-1)
{
  SetUnit("ns");
}

SolidPSTimeEnd::SolidPSTimeEnd(G4String name, const G4String& unit,
				     G4int depth)
  :G4VPrimitiveScorer(name,depth),HCID(-1)
{
  SetUnit(unit);
}

SolidPSTimeEnd::~SolidPSTimeEnd()
{;}

G4bool SolidPSTimeEnd::ProcessHits(G4Step* aStep,G4TouchableHistory*)
{
  G4double edep = aStep->GetTotalEnergyDeposit();
  G4StepPoint* thePrePoint = aStep->GetPreStepPoint();
  G4double time = thePrePoint->GetGlobalTime();

  if ( edep == 0. ) return FALSE;
  //edep *= aStep->GetPreStepPoint()->GetWeight(); // (Particle Weight)
  G4int  index = GetIndex(aStep);

  // Calculate average time for multiple hits in a same cube
  // Use m_counter[index] to check number of hits
  // It updates average time for each time adding a hit
  std::map<G4int,G4double*> evtMap = *(EvtMap->GetMap());

  // If it is first hit
  if (evtMap.find(index) == evtMap.end()) {
    m_counter[index] = 1;
    EvtMap->add(index,time);

  // It it is not first hit, update average time
  } else {
    G4int n = m_counter[index];    // n: number of entries before adding new time
    m_counter[index] += 1;         // update counter
    G4double old_val = *evtMap[index];  // old average
    G4double val = (old_val * n + time) / (1.0*n+1);   // Update average
    EvtMap->set(index,val);   // Set new average time to the map
  }
  return TRUE;
}

void SolidPSTimeEnd::Initialize(G4HCofThisEvent* HCE)
{
  EvtMap = new G4THitsMap<G4double>(GetMultiFunctionalDetector()->GetName(),
				    GetName());
  if(HCID < 0) {HCID = GetCollectionID(0);}
  HCE->AddHitsCollection(HCID, (G4VHitsCollection*)EvtMap);
}

void SolidPSTimeEnd::EndOfEvent(G4HCofThisEvent*)
{;}

void SolidPSTimeEnd::clear()
{
  EvtMap->clear();
}

void SolidPSTimeEnd::DrawAll()
{;}

void SolidPSTimeEnd::PrintAll()
{
  G4cout << " MultiFunctionalDet  " << detector->GetName() << G4endl;
  G4cout << " PrimitiveScorer " << GetName() << G4endl;
  G4cout << " Number of entries " << EvtMap->entries() << G4endl;
  std::map<G4int,G4double*>::iterator itr = EvtMap->GetMap()->begin();
  for(; itr != EvtMap->GetMap()->end(); itr++) {
    G4cout << "  copy no.: " << itr->first
	   << "  time: "
	   << *(itr->second)/GetUnitValue()
	   << " [" << GetUnit()<<"]"
	   << G4endl;
  }
}

void SolidPSTimeEnd::SetUnit(const G4String& unit)
{
	CheckAndSetUnit(unit,"Time");
}

G4int SolidPSTimeEnd::GetIndex(G4Step* aStep)
{
	G4StepPoint* preStep = aStep->GetPreStepPoint();
	G4TouchableHistory* th = (G4TouchableHistory*)(preStep->GetTouchable());
//	G4int index= th->GetReplicaNumber(indexDepth) + (th->GetReplicaNumber(indexDepth+1))*10000;
    G4int index= th->GetReplicaNumber(indexDepth) + (th->GetReplicaNumber(indexDepth+1) + 10*th->GetReplicaNumber(indexDepth+2))*10000;
    // G4cout << "The id is: " << index <<G4endl;
	return index;
}