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

#include "PhysicsList.hh"

#include "PhysListEmStandard_GS.hh"
#include "PhysListEmStandard_SS.hh"
#include "PhysListEmStandard_WVI.hh"
#include "PhysListEmStandard_option0.hh"
#include "PhysListEmStandard_option3.hh"
#include "PhysListEmStandard_option4.hh"
#include "PhysicsListMessenger.hh"
#include "StepMax.hh"

#include "G4EmBuilder.hh"
#include "G4LossTableManager.hh"
#include "G4ParticleDefinition.hh"
#include "G4ProcessManager.hh"
#include "G4SystemOfUnits.hh"
#include "G4UnitsTable.hh"

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

PhysicsList::PhysicsList(DetectorConstruction* det) : G4VModularPhysicsList(), fDetector(det)
{
  G4LossTableManager::Instance();
  fMessenger = new PhysicsListMessenger(this);

  // EM physics
  fEmName = G4String("standard_opt3");
  fEmPhysicsList = new PhysListEmStandard_option3(fEmName, fDetector);

  defaultCutValue = 10 * km;

  SetVerboseLevel(1);
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

PhysicsList::~PhysicsList()
{
  delete fEmPhysicsList;
  delete fMessenger;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

void PhysicsList::ConstructParticle()
{
  G4EmBuilder::ConstructMinimalEmSet();
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

void PhysicsList::ConstructProcess()
{
  AddTransportation();
  fEmPhysicsList->ConstructProcess();

  AddStepMax();
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

void PhysicsList::AddStepMax()
{
  // Step limitation seen as a process
  StepMax* stepMaxProcess = new StepMax();

  auto particleIterator = GetParticleIterator();
  particleIterator->reset();
  while ((*particleIterator)()) {
    G4ParticleDefinition* particle = particleIterator->value();
    G4ProcessManager* pmanager = particle->GetProcessManager();

    if (stepMaxProcess->IsApplicable(*particle) && !particle->IsShortLived()) {
      pmanager->AddDiscreteProcess(stepMaxProcess);
    }
  }
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

void PhysicsList::AddPhysicsList(const G4String& name)
{
  if (verboseLevel > 0) {
    G4cout << "PhysicsList::AddPhysicsList: <" << name << ">" << G4endl;
  }

  if (name == fEmName) return;

  if (name == "standard_opt0") {
    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new PhysListEmStandard_option0(name, fDetector);
  }
  else if (name == "standard_opt3") {
    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new PhysListEmStandard_option3(name, fDetector);
  }
  else if (name == "standard_opt4") {
    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new PhysListEmStandard_option4(name, fDetector);
  }
  else if (name == "standard_GS") {
    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new PhysListEmStandard_GS(name, fDetector);
  }
  else if (name == "standard_WVI") {
    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new PhysListEmStandard_WVI(name, fDetector);
  }
  else if (name == "standard_SS") {
    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new PhysListEmStandard_SS(name, fDetector);
  }
  else {
    G4cout << "PhysicsList::AddPhysicsList: <" << name << ">"
           << " is not defined" << G4endl;
  }
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

void PhysicsList::SetCuts()
{
  if (verboseLevel > 0) {
    G4cout << "PhysicsList::SetCuts:";
    G4cout << "CutLength : " << G4BestUnit(defaultCutValue, "Length") << G4endl;
  }

  // set cut values for gamma at first and for e- second and next for e+,
  // because some processes for e+/e- need cut values for gamma
  SetCutValue(defaultCutValue, "gamma");
  SetCutValue(defaultCutValue, "e-");
  SetCutValue(defaultCutValue, "e+");
  SetCutValue(defaultCutValue, "proton");
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
