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/// \file PrimaryGeneratorAction.cc
/// \brief Implementation of the PrimaryGeneratorAction class

#include "PrimaryGeneratorAction.hh"

#include "PrimaryGeneratorAction0.hh"
#include "PrimaryGeneratorAction1.hh"
#include "PrimaryGeneratorAction2.hh"
#include "PrimaryGeneratorAction3.hh"
#include "PrimaryGeneratorAction4.hh"
#include "PrimaryGeneratorMessenger.hh"

#include "G4Event.hh"
#include "G4ParticleDefinition.hh"
#include "G4ParticleGun.hh"
#include "G4ParticleTable.hh"
#include "Randomize.hh"

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PrimaryGeneratorAction::PrimaryGeneratorAction()
{
  // default particle kinematic
  //
  G4int n_particle = 1;
  fParticleGun = new G4ParticleGun(n_particle);

  G4ParticleDefinition* particle = G4ParticleTable::GetParticleTable()->FindParticle("geantino");
  fParticleGun->SetParticleDefinition(particle);

  fParticleGun->SetParticlePosition(G4ThreeVector(0., 0., 0.));

  fAction0 = new PrimaryGeneratorAction0(fParticleGun);
  fAction1 = new PrimaryGeneratorAction1(fParticleGun);
  fAction2 = new PrimaryGeneratorAction2(fParticleGun);
  fAction3 = new PrimaryGeneratorAction3(fParticleGun);
  fAction4 = new PrimaryGeneratorAction4(fParticleGun);

  // create a messenger for this class
  fGunMessenger = new PrimaryGeneratorMessenger(this);
}

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PrimaryGeneratorAction::~PrimaryGeneratorAction()
{
  delete fAction0;
  delete fAction1;
  delete fAction2;
  delete fAction3;
  delete fAction4;
  delete fParticleGun;
  delete fGunMessenger;
}

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void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
{
  switch (fSelectedAction) {
    case 0:
      fAction0->GeneratePrimaries(anEvent);
      break;
    case 1:
      fAction1->GeneratePrimaries(anEvent);
      break;
    case 2:
      fAction2->GeneratePrimaries(anEvent);
      break;
    case 3:
      fAction3->GeneratePrimaries(anEvent);
      break;
    case 4:
      fAction4->GeneratePrimaries(anEvent);
      break;
    default:
      G4cerr << "Invalid generator fAction" << G4endl;
  }
}

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