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//
/// \file TrackingAction.cc
/// \brief Implementation of the TrackingAction class
//
//
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#include "TrackingAction.hh"

#include "Run.hh"
#include "HistoManager.hh"
#include "TrackingMessenger.hh"

#include "G4Track.hh"
#include "G4StepStatus.hh"
#include "G4RunManager.hh"

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TrackingAction::TrackingAction()
:G4UserTrackingAction(), fTrackMessenger(nullptr),
 fParticleCount(true)
{
  fTrackMessenger = new TrackingMessenger(this); 
}

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TrackingAction::~TrackingAction()
{
  delete fTrackMessenger;
}

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void TrackingAction::PreUserTrackingAction(const G4Track* track)
{  
  //count secondary particles
  if (track->GetTrackID() == 1) return;
  
  Run* run = static_cast<Run*>(
        G4RunManager::GetRunManager()->GetNonConstCurrentRun());
	  
  G4int iabs        = track->GetTouchableHandle()->GetCopyNumber();
  G4String name     = track->GetDefinition()->GetParticleName();
  G4double meanLife = track->GetDefinition()->GetPDGLifeTime();  
  G4double energy   = track->GetKineticEnergy();
  //do not count excited states with meanlife = 0.   
  if (fParticleCount && (iabs > 0) && (meanLife != 0.))
    run->ParticleCount(iabs,name,energy,meanLife);
}

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void TrackingAction::PostUserTrackingAction(const G4Track* track)
{
  // get Run
  Run* run 
    = static_cast<Run*>(
        G4RunManager::GetRunManager()->GetNonConstCurrentRun());
  
  // where are we ?
  G4StepStatus status = track->GetStep()->GetPostStepPoint()->GetStepStatus();
  
  //status of primary particle : absorbed, transmited, reflected ?
  if (track->GetTrackID() == 1) {
    G4int flag = 0;
    if (status == fWorldBoundary) {
      if (track->GetMomentumDirection().x() > 0.) flag = 1;
      else                                        flag = 2;
    }
    run->AddTrackStatus(flag);
  }
  
  // keep only emerging particles
  if (status != fWorldBoundary) return;

  // count particles
  const G4ParticleDefinition* particle = track->GetParticleDefinition();
  G4String name     = particle->GetParticleName();
  G4double meanLife = particle->GetPDGLifeTime();  
  G4double energy   = track->GetKineticEnergy();
  run->ParticleCount(0,name,energy,meanLife);

 ////G4AnalysisManager* analysisManager = G4AnalysisManager::Instance();  
}

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