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

//---------------------------------------------------------------------------
//
// ClassName:   PhysicsList
//
// Author:      V.Ivanchenko 14.10.2002
//
// Modified:
// 17.11.06 Use components from physics_lists subdirectory (V.Ivanchenko)
// 24.10.12 Migrated to new stopping and ion physics (A.Ribon)
//
//----------------------------------------------------------------------------
//

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#include "PhysicsList.hh"

#include "PhysListEmStandard.hh"
#include "PhysicsListMessenger.hh"
#include "StepMax.hh"

#include "G4DecayPhysics.hh"
#include "G4Electron.hh"
#include "G4EmExtraPhysics.hh"
#include "G4EmLivermorePhysics.hh"
#include "G4EmLowEPPhysics.hh"
#include "G4EmPenelopePhysics.hh"
#include "G4EmStandardPhysics.hh"
#include "G4EmStandardPhysicsGS.hh"
#include "G4EmStandardPhysicsSS.hh"
#include "G4EmStandardPhysicsWVI.hh"
#include "G4EmStandardPhysics_option1.hh"
#include "G4EmStandardPhysics_option2.hh"
#include "G4EmStandardPhysics_option3.hh"
#include "G4EmStandardPhysics_option4.hh"
#include "G4Gamma.hh"
#include "G4HadronElasticPhysics.hh"
#include "G4HadronInelasticQBBC.hh"
#include "G4IonPhysics.hh"
#include "G4LossTableManager.hh"
#include "G4ParticleTable.hh"
#include "G4ParticleTypes.hh"
#include "G4Positron.hh"
#include "G4ProcessManager.hh"
#include "G4Proton.hh"
#include "G4RegionStore.hh"
#include "G4StoppingPhysics.hh"
#include "G4SystemOfUnits.hh"
#include "G4UnitsTable.hh"

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PhysicsList::PhysicsList()
  : G4VModularPhysicsList(),
    fEmPhysicsList(nullptr),
    fDecayPhysicsList(nullptr),
    fStepMaxProcess(nullptr),
    fMessenger(nullptr)
{
  G4LossTableManager::Instance();
  SetDefaultCutValue(1 * mm);

  fMessenger = new PhysicsListMessenger(this);
  fStepMaxProcess = new StepMax();

  // Initilise flags

  SetVerboseLevel(1);

  fHelIsRegisted = false;
  fBicIsRegisted = false;
  fGnucIsRegisted = false;
  fStopIsRegisted = false;

  // EM physics
  fEmName = G4String("emstandard");
  fEmPhysicsList = new G4EmStandardPhysics();

  // Decay Physics is always defined
  fDecayPhysicsList = new G4DecayPhysics();
}

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PhysicsList::~PhysicsList()
{
  delete fMessenger;
  delete fDecayPhysicsList;
  delete fEmPhysicsList;
  delete fStepMaxProcess;
  for (size_t i = 0; i < fHadronPhys.size(); i++) {
    delete fHadronPhys[i];
  }
}

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void PhysicsList::ConstructParticle()
{
  fDecayPhysicsList->ConstructParticle();
}

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void PhysicsList::ConstructProcess()
{
  AddTransportation();
  fEmPhysicsList->ConstructProcess();
  fDecayPhysicsList->ConstructProcess();
  for (size_t i = 0; i < fHadronPhys.size(); ++i) {
    fHadronPhys[i]->ConstructProcess();
  }
  AddStepMax();
}

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void PhysicsList::AddPhysicsList(const G4String& name)
{
  if (verboseLevel > 1) G4cout << "PhysicsList::AddPhysicsList: <" << name << ">" << G4endl;

  if (name == fEmName) return;

  if (name == "emstandard") {
    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new G4EmStandardPhysics(verboseLevel);
    if (verboseLevel > 0) G4cout << "PhysicsList::Set " << name << " EM physics" << G4endl;
  }
  else if (name == "emstandard_opt1") {
    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new G4EmStandardPhysics_option1(verboseLevel);
    if (verboseLevel > 0) G4cout << "PhysicsList::Set " << name << " EM physics" << G4endl;
  }
  else if (name == "emstandard_opt2") {
    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new G4EmStandardPhysics_option2(verboseLevel);
    if (verboseLevel > 0) G4cout << "PhysicsList::Set " << name << " EM physics" << G4endl;
  }
  else if (name == "emstandard_opt3") {
    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new G4EmStandardPhysics_option3(verboseLevel);
    if (verboseLevel > 0) G4cout << "PhysicsList::Set " << name << " EM physics" << G4endl;
  }
  else if (name == "emstandard_opt4") {
    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new G4EmStandardPhysics_option4(verboseLevel);
    if (verboseLevel > 0) G4cout << "PhysicsList::Set " << name << " EM physics" << G4endl;
  }
  else if (name == "local") {
    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new PhysListEmStandard(verboseLevel);
    if (verboseLevel > 0) G4cout << "PhysicsList::Set " << name << " EM physics" << G4endl;
  }
  else if (name == "emlivermore") {
    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new G4EmLivermorePhysics(verboseLevel);
  }
  else if (name == "empenelope") {
    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new G4EmPenelopePhysics(verboseLevel);
  }
  else if (name == "emlowenergy") {
    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new G4EmLowEPPhysics(verboseLevel);
  }
  else if (name == "emstandardGS") {
    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new G4EmStandardPhysicsGS(verboseLevel);
  }
  else if (name == "emstandardSS") {
    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new G4EmStandardPhysicsSS(verboseLevel);
  }
  else if (name == "emstandardWVI") {
    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new G4EmStandardPhysicsWVI();
  }
  else if (name == "elastic" && !fHelIsRegisted) {
    fHadronPhys.push_back(new G4HadronElasticPhysics());
    fHelIsRegisted = true;
    if (verboseLevel > 0) G4cout << "PhysicsList::Add hadron elastic physics" << G4endl;
  }
  else if (name == "binary" && !fBicIsRegisted) {
    fHadronPhys.push_back(new G4HadronInelasticQBBC());
    fHadronPhys.push_back(new G4IonPhysics());
    fBicIsRegisted = true;
    if (verboseLevel > 0)
      G4cout << "PhysicsList::Add hadron inelastic physics from <QBBC>" << G4endl;
  }
  else if (name == "gamma_nuc" && !fGnucIsRegisted) {
    fHadronPhys.push_back(new G4EmExtraPhysics());
    fGnucIsRegisted = true;
    if (verboseLevel > 0) G4cout << "PhysicsList::Add gamma- and electro-nuclear physics" << G4endl;
  }
  else if (name == "stopping" && !fStopIsRegisted) {
    fHadronPhys.push_back(new G4StoppingPhysics());
    fStopIsRegisted = true;
    if (verboseLevel > 0) G4cout << "PhysicsList::Add stopping physics" << G4endl;
  }
  else {
    G4cout << "PhysicsList::AddPhysicsList: <" << name << ">"
           << " is not defined" << G4endl;
  }
}

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void PhysicsList::AddStepMax()
{
  // Step limitation seen as a process

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

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

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