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/// \file electromagnetic/TestEm11/src/RunAction.cc
/// \brief Implementation of the RunAction class
//
// $Id: RunAction.cc 93562 2015-10-26 14:44:24Z gcosmo $
// 
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#include "RunAction.hh"
#include "PhysicsList.hh"
#include "StepMax.hh"
#include "PrimaryGeneratorAction.hh"
#include "HistoManager.hh"
#include "Run.hh"

#include "G4Run.hh"
#include "G4RunManager.hh"
#include "G4EmCalculator.hh"

#include "G4UnitsTable.hh"
#include "G4SystemOfUnits.hh"

#include "Randomize.hh"

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RunAction::RunAction(DetectorConstruction* det, PhysicsList* phys,
                     PrimaryGeneratorAction* kin)
:G4UserRunAction(),fDetector(det),fPhysics(phys),fPrimary(kin),fRun(0),
 fHistoManager(0)
{
  // Book predefined histograms
  fHistoManager = new HistoManager();
}

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RunAction::~RunAction()
{
  delete fHistoManager;
}

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G4Run* RunAction::GenerateRun()
{ 
  fRun = new Run(fDetector); 
  return fRun;
}

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void RunAction::BeginOfRunAction(const G4Run*)
{  
  // save Rndm status
  ////G4RunManager::GetRunManager()->SetRandomNumberStore(true);
   if (isMaster)  G4Random::showEngineStatus();
   
  // keep run condition
  if ( fPrimary ) { 
    G4ParticleDefinition* particle 
      = fPrimary->GetParticleGun()->GetParticleDefinition();
    G4double energy = fPrimary->GetParticleGun()->GetParticleEnergy();
    fRun->SetPrimary(particle, energy);
  }
        
  //histograms
  //
  G4AnalysisManager* analysisManager = G4AnalysisManager::Instance();
  if ( analysisManager->IsActive() ) {
    analysisManager->OpenFile();
  }
   
  if (!fPrimary) return;
      
  //set StepMax from histos 1 and 8
  //
  G4double stepMax = DBL_MAX;
  G4int ih = 1;
  if (analysisManager->GetH1Activation(ih)) {
    stepMax = analysisManager->GetH1Width(ih)
             *analysisManager->GetH1Unit(ih);
  }  
  
  ih = 8;
  G4ParticleDefinition* particle = fPrimary->GetParticleGun()
                                          ->GetParticleDefinition();
  if (particle->GetPDGCharge() != 0.) {
    G4double width = analysisManager->GetH1Width(ih);
    if (width == 0.) width = 1.;                                               
    G4EmCalculator emCalculator;
    G4double energy = fPrimary->GetParticleGun()->GetParticleEnergy();
    G4int nbOfAbsor = fDetector->GetNbOfAbsor();
    for (G4int i=1; i<= nbOfAbsor; i++) {
      G4Material* material = fDetector->GetAbsorMaterial(i);
      G4double newCsdaRange 
                   = emCalculator.GetCSDARange(energy,particle,material);
      fRun->SetCsdaRange(i, newCsdaRange);
      if (analysisManager->GetH1Activation(ih))
        stepMax = std::min(stepMax, width*newCsdaRange);
      if (i>1) {
        G4double thickness = fDetector->GetAbsorThickness(i-1);
        G4double xfrontNorm = fRun->GetXfrontNorm(i-1);
        G4double csdaRange = fRun->GetCsdaRange(i-1);
        G4double newXfrontNorm = xfrontNorm + thickness/csdaRange;
        fRun->SetXfrontNorm(i, newXfrontNorm);
      }                              
    }        
  }    
  fPhysics->GetStepMaxProcess()->SetMaxStep2(stepMax);           
}

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void RunAction::EndOfRunAction(const G4Run*)
{ 
  if (isMaster) fRun->EndOfRun();  
  
  // save histograms
  G4AnalysisManager* analysisManager = G4AnalysisManager::Instance();
  if ( analysisManager->IsActive() ) {  
    analysisManager->Write();
    analysisManager->CloseFile();
  }    
 
  // show Rndm status
    if (isMaster) G4Random::showEngineStatus();
}

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