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/// \file DirectAccess.cc
/// \brief Main program of the electromagnetic/TestEm0 example

// ------------------------------------------------------------
//
//  To print cross sections per atom and mean free path for simple material
//
#include "G4BetheBlochModel.hh"
#include "G4BetheHeitlerModel.hh"
#include "G4BraggModel.hh"
#include "G4DataVector.hh"
#include "G4Electron.hh"
#include "G4Gamma.hh"
#include "G4KleinNishinaCompton.hh"
#include "G4Material.hh"
#include "G4MollerBhabhaModel.hh"
#include "G4MuBetheBlochModel.hh"
#include "G4MuBremsstrahlungModel.hh"
#include "G4MuPairProductionModel.hh"
#include "G4MuonPlus.hh"
#include "G4NistManager.hh"
#include "G4PEEffectFluoModel.hh"
#include "G4ParticleTable.hh"
#include "G4Positron.hh"
#include "G4Proton.hh"
#include "G4SeltzerBergerModel.hh"
#include "G4SystemOfUnits.hh"
#include "G4UnitsTable.hh"
#include "G4eeToTwoGammaModel.hh"
#include "globals.hh"

int main()
{
  G4UnitDefinition::BuildUnitsTable();

  G4ParticleDefinition* gamma = G4Gamma::Gamma();
  G4ParticleDefinition* posit = G4Positron::Positron();
  G4ParticleDefinition* elec = G4Electron::Electron();
  G4ParticleDefinition* prot = G4Proton::Proton();
  G4ParticleDefinition* muon = G4MuonPlus::MuonPlus();
  G4ParticleTable* partTable = G4ParticleTable::GetParticleTable();
  partTable->SetReadiness();

  G4DataVector cuts;
  cuts.push_back(1 * keV);

  // define materials
  //
  G4Material* material = G4NistManager::Instance()->FindOrBuildMaterial("G4_Fe");

  G4cout << *(G4Material::GetMaterialTable()) << G4endl;

  G4MaterialCutsCouple* couple = new G4MaterialCutsCouple(material);
  couple->SetIndex(0);

  // work only for simple materials
  G4double Z = material->GetZ();
  G4double A = material->GetA();

  // initialise gamma processes (models)
  //
  G4VEmModel* phot = new G4PEEffectFluoModel();
  G4VEmModel* comp = new G4KleinNishinaCompton();
  G4VEmModel* conv = new G4BetheHeitlerModel();
  phot->Initialise(gamma, cuts);
  comp->Initialise(gamma, cuts);
  conv->Initialise(gamma, cuts);

  // valid pointer to a couple is needed for this model
  phot->SetCurrentCouple(couple);

  // compute CrossSection per atom and MeanFreePath
  //
  G4double Emin = 1.01 * MeV, Emax = 2.01 * MeV, dE = 100 * keV;

  G4cout << "\n #### Gamma : CrossSectionPerAtom and MeanFreePath for " << material->GetName()
         << G4endl;
  G4cout << "\n Energy \t PhotoElec \t Compton \t Conversion \t";
  G4cout << "\t PhotoElec \t Compton \t Conversion" << G4endl;

  for (G4double Energy = Emin; Energy <= Emax; Energy += dE) {
    G4cout << "\n " << G4BestUnit(Energy, "Energy") << "\t"
           << G4BestUnit(phot->ComputeCrossSectionPerAtom(gamma, Energy, Z), "Surface") << "\t"
           << G4BestUnit(comp->ComputeCrossSectionPerAtom(gamma, Energy, Z), "Surface") << "\t"
           << G4BestUnit(conv->ComputeCrossSectionPerAtom(gamma, Energy, Z), "Surface") << "\t \t"
           << G4BestUnit(phot->ComputeMeanFreePath(gamma, Energy, material), "Length") << "\t"
           << G4BestUnit(comp->ComputeMeanFreePath(gamma, Energy, material), "Length") << "\t"
           << G4BestUnit(conv->ComputeMeanFreePath(gamma, Energy, material), "Length");
  }

  G4cout << G4endl;

  // initialise positron annihilation (model)
  //
  G4VEmModel* anni = new G4eeToTwoGammaModel();
  anni->Initialise(posit, cuts);

  // compute CrossSection per atom and MeanFreePath
  //
  Emin = 1.01 * MeV;
  Emax = 2.01 * MeV;
  dE = 100 * keV;

  G4cout << "\n #### e+ annihilation : CrossSectionPerAtom and MeanFreePath"
         << " for " << material->GetName() << G4endl;
  G4cout << "\n Energy \t e+ annihil \t";
  G4cout << "\t e+ annihil" << G4endl;

  for (G4double Energy = Emin; Energy <= Emax; Energy += dE) {
    G4cout << "\n " << G4BestUnit(Energy, "Energy") << "\t"
           << G4BestUnit(anni->ComputeCrossSectionPerAtom(posit, Energy, Z), "Surface") << "\t \t"
           << G4BestUnit(anni->ComputeMeanFreePath(posit, Energy, material), "Length");
  }

  G4cout << G4endl;

  // initialise electron processes (models)
  //
  G4VEmModel* ioni = new G4MollerBhabhaModel();
  G4VEmModel* brem = new G4SeltzerBergerModel();
  ioni->Initialise(elec, cuts);
  brem->Initialise(elec, cuts);

  // compute CrossSection per atom and MeanFreePath
  //
  Emin = 1.01 * MeV;
  Emax = 101.01 * MeV;
  dE = 10 * MeV;
  G4double Ecut = 100 * keV;

  G4cout << "\n ####electron: CrossSection, MeanFreePath and StoppingPower"
         << " for " << material->GetName() << ";\tEnergy cut = " << G4BestUnit(Ecut, "Energy")
         << G4endl;

  G4cout << "\n Energy \t ionization \t bremsstra \t";
  G4cout << "\t ionization \t bremsstra \t";
  G4cout << "\t ionization \t bremsstra" << G4endl;

  for (G4double Energy = Emin; Energy <= Emax; Energy += dE) {
    G4cout << "\n " << G4BestUnit(Energy, "Energy") << "\t"
           << G4BestUnit(ioni->ComputeCrossSectionPerAtom(elec, Energy, Z, A, Ecut), "Surface")
           << "\t"
           << G4BestUnit(brem->ComputeCrossSectionPerAtom(elec, Energy, Z, A, Ecut), "Surface")
           << "\t \t"
           << G4BestUnit(ioni->ComputeMeanFreePath(elec, Energy, material, Ecut), "Length") << "\t"
           << G4BestUnit(brem->ComputeMeanFreePath(elec, Energy, material, Ecut), "Length")
           << "\t \t"
           << G4BestUnit(ioni->ComputeDEDXPerVolume(material, elec, Energy, Ecut), "Energy/Length")
           << "\t"
           << G4BestUnit(brem->ComputeDEDXPerVolume(material, elec, Energy, Ecut), "Energy/Length");
  }

  G4cout << G4endl;

  // initialise proton processes (models)
  //
  ioni = new G4BetheBlochModel();
  ioni->Initialise(prot, cuts);

  // compute CrossSection per atom and MeanFreePath
  //
  Emin = 1.01 * MeV;
  Emax = 102.01 * MeV;
  dE = 10 * MeV;
  Ecut = 100 * keV;

  G4cout << "\n #### proton : CrossSection, MeanFreePath and StoppingPower"
         << " for " << material->GetName() << ";\tEnergy cut = " << G4BestUnit(Ecut, "Energy")
         << G4endl;

  G4cout << "\n Energy \t ionization \t";
  G4cout << "\t ionization \t";
  G4cout << "\t ionization" << G4endl;

  for (G4double Energy = Emin; Energy <= Emax; Energy += dE) {
    G4cout << "\n " << G4BestUnit(Energy, "Energy") << "\t"
           << G4BestUnit(ioni->ComputeCrossSectionPerAtom(prot, Energy, Z, A, Ecut), "Surface")
           << "\t \t"
           << G4BestUnit(ioni->ComputeMeanFreePath(prot, Energy, material, Ecut), "Length")
           << "\t \t"
           << G4BestUnit(ioni->ComputeDEDXPerVolume(material, prot, Energy, Ecut), "Energy/Length");
  }

  G4cout << G4endl;

  // low energy : Bragg Model
  ioni = new G4BraggModel(prot);
  ioni->Initialise(prot, cuts);

  // compute CrossSection per atom and MeanFreePath
  //
  Emin = 1.1 * keV;
  Emax = 2.01 * MeV;
  dE = 300 * keV;
  Ecut = 10 * keV;

  G4cout << "\n #### proton : low energy model (Bragg) "
         << ";\tEnergy cut = " << G4BestUnit(Ecut, "Energy") << G4endl;

  G4cout << "\n Energy \t ionization \t";
  G4cout << "\t ionization \t";
  G4cout << "\t ionization" << G4endl;

  for (G4double Energy = Emin; Energy <= Emax; Energy += dE) {
    G4cout << "\n " << G4BestUnit(Energy, "Energy") << "\t"
           << G4BestUnit(ioni->ComputeCrossSectionPerAtom(prot, Energy, Z, A, Ecut), "Surface")
           << "\t \t"
           << G4BestUnit(ioni->ComputeMeanFreePath(prot, Energy, material, Ecut), "Length")
           << "\t \t"
           << G4BestUnit(ioni->ComputeDEDXPerVolume(material, prot, Energy, Ecut), "Energy/Length");
  }

  G4cout << G4endl;

  // initialise muon processes (models)
  //
  ioni = new G4MuBetheBlochModel();
  brem = new G4MuBremsstrahlungModel();
  G4VEmModel* pair = new G4MuPairProductionModel();
  ioni->Initialise(muon, cuts);
  brem->Initialise(muon, cuts);
  pair->Initialise(muon, cuts);

  // compute CrossSection per atom and MeanFreePath
  //
  Emin = 1.01 * GeV;
  Emax = 101.01 * GeV;
  dE = 10 * GeV;
  Ecut = 10 * MeV;

  G4cout << "\n ####muon: CrossSection and MeanFreePath for " << material->GetName()
         << ";\tEnergy cut = " << G4BestUnit(Ecut, "Energy") << G4endl;

  G4cout << "\n Energy \t ionization \t bremsstra \t pair_prod \t";
  G4cout << "\t ionization \t bremsstra \t pair_prod" << G4endl;

  for (G4double Energy = Emin; Energy <= Emax; Energy += dE) {
    G4cout << "\n " << G4BestUnit(Energy, "Energy") << "\t"
           << G4BestUnit(ioni->ComputeCrossSectionPerAtom(muon, Energy, Z, A, Ecut), "Surface")
           << "\t"
           << G4BestUnit(brem->ComputeCrossSectionPerAtom(muon, Energy, Z, A, Ecut), "Surface")
           << "\t"
           << G4BestUnit(pair->ComputeCrossSectionPerAtom(muon, Energy, Z, A, Ecut), "Surface")
           << "\t \t"
           << G4BestUnit(ioni->ComputeMeanFreePath(muon, Energy, material, Ecut), "Length") << "\t"
           << G4BestUnit(brem->ComputeMeanFreePath(muon, Energy, material, Ecut), "Length") << "\t"
           << G4BestUnit(pair->ComputeMeanFreePath(muon, Energy, material, Ecut), "Length");
  }

  G4cout << G4endl;

  G4cout << "\n ####muon: StoppingPower for " << material->GetName()
         << ";\tEnergy cut = " << G4BestUnit(Ecut, "Energy") << G4endl;

  G4cout << "\n Energy \t ionization \t bremsstra \t pair_prod \t" << G4endl;

  for (G4double Energy = Emin; Energy <= Emax; Energy += dE) {
    G4cout << "\n " << G4BestUnit(Energy, "Energy") << "\t"
           << G4BestUnit(ioni->ComputeDEDXPerVolume(material, muon, Energy, Ecut), "Energy/Length")
           << "\t"
           << G4BestUnit(brem->ComputeDEDXPerVolume(material, muon, Energy, Ecut), "Energy/Length")
           << "\t"
           << G4BestUnit(pair->ComputeDEDXPerVolume(material, muon, Energy, Ecut), "Energy/Length");
  }

  G4cout << G4endl;
  return EXIT_SUCCESS;
}

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