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// G. Paternò, April 2024
//
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#include "DecayPhysics.hh"

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

#include "G4Decay.hh"
#include "G4PhysicsListHelper.hh"
#include "G4Radioactivation.hh"
#include "G4LossTableManager.hh"
#include "G4UAtomicDeexcitation.hh"
#include "G4ParticleTypes.hh"
#include "G4NuclideTable.hh"
#include "G4NuclearLevelData.hh"
#include "G4DeexPrecoParameters.hh"
#include "G4PhysListUtil.hh"
#include "G4EmBuilder.hh"
#include "G4ProcessManager.hh"

#include "G4BosonConstructor.hh"
#include "G4LeptonConstructor.hh"
#include "G4MesonConstructor.hh"
#include "G4BosonConstructor.hh"
#include "G4BaryonConstructor.hh"
#include "G4IonConstructor.hh"
#include "G4GenericIon.hh"

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DecayPhysics::DecayPhysics(const G4String& name):G4VPhysicsConstructor(name)
{
	//G4cout << "### Decay physics intantiated ###" << G4endl;
	
    //instantiate Physics List infrastructure 
    G4PhysListUtil::InitialiseParameters();
  
    //update G4NuclideTable time limit
    const G4double meanLife = 0.1*picosecond;  
    G4NuclideTable::GetInstance()->SetMeanLifeThreshold(meanLife);  
    G4NuclideTable::GetInstance()->SetLevelTolerance(1.0*eV);

    //define flags for nuclear gamma de-excitation model
    G4DeexPrecoParameters* deex = 
      G4NuclearLevelData::GetInstance()->GetParameters();
    deex->SetCorrelatedGamma(false);
    deex->SetStoreAllLevels(true);
    deex->SetInternalConversionFlag(true);	  
    deex->SetIsomerProduction(true);  
    deex->SetMaxLifeTime(meanLife);
}

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DecayPhysics::~DecayPhysics(){;}

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void DecayPhysics::ConstructParticle()
{   
    G4BosonConstructor  pBosonConstructor;
    pBosonConstructor.ConstructParticle();
    
    G4LeptonConstructor pLeptonConstructor;
    pLeptonConstructor.ConstructParticle();
    
    G4MesonConstructor pMesonConstructor;
    pMesonConstructor.ConstructParticle();
    
    G4BaryonConstructor pBaryonConstructor;
    pBaryonConstructor.ConstructParticle();
    
    G4IonConstructor pIonConstructor;
    pIonConstructor.ConstructParticle();
}

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void DecayPhysics::ConstructProcess()
{
	G4cout << G4endl << "### Decay processes activated ###" << G4endl;

  	G4Decay* theDecayProcess = new G4Decay();
  	GetParticleIterator()->reset();
  	while ( (*GetParticleIterator())() ) {
    	G4ParticleDefinition* particle = GetParticleIterator()->value();
    	G4ProcessManager* pmanager = particle->GetProcessManager();
    	if (theDecayProcess->IsApplicable(*particle)) {
      		pmanager->AddProcess(theDecayProcess);
      		//set ordering for PostStepDoIt and AtRestDoIt
      		pmanager->SetProcessOrdering(theDecayProcess, idxPostStep);
      		pmanager->SetProcessOrdering(theDecayProcess, idxAtRest);
    	}
  	}

  	 
	G4Radioactivation* radioactiveDecay = 
		new G4Radioactivation("Radioactivation", 1.0e+60*CLHEP::year);
    radioactiveDecay->SetARM(true); //Atomic Rearangement

/*  	  
    //if EM physics constructor is not used, it is needed
    //to instantiate and to initialize atomic deexcitation
    G4LossTableManager* man = G4LossTableManager::Instance();
    G4VAtomDeexcitation* deex = man->AtomDeexcitation();
    if (nullptr == deex) {
       deex = new G4UAtomicDeexcitation();
       man->SetAtomDeexcitation(deex);
    }
    deex->InitialiseAtomicDeexcitation();
*/

    G4PhysicsListHelper* ph = G4PhysicsListHelper::GetPhysicsListHelper();
    ph->RegisterProcess(radioactiveDecay, G4GenericIon::GenericIon());
  	
}

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