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

#include "DetectorConstruction.hh"

#include "DetectorMessenger.hh"
#include "G4AutoDelete.hh"
#include "G4GlobalMagFieldMessenger.hh"
#include "G4LogicalVolume.hh"
#include "G4LogicalVolumeStore.hh"
#include "G4NistManager.hh"
#include "G4PVPlacement.hh"
#include "G4PhysicalVolumeStore.hh"
#include "G4RunManager.hh"
#include "G4SolidStore.hh"
#include "G4SystemOfUnits.hh"
#include "G4Tubs.hh"
#include "G4UnitsTable.hh"

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G4ThreadLocal
G4GlobalMagFieldMessenger* DetectorConstruction::fMagFieldMessenger = nullptr;

DetectorConstruction::DetectorConstruction()
{
  DefineMaterials();
  SetMaterial("G4_PbWO4");
  fDetectorMessenger = new DetectorMessenger(this);
}

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DetectorConstruction::~DetectorConstruction()
{
  delete fDetectorMessenger;
}

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void DetectorConstruction::DefineMaterials()
{
  //
  // define few Elements by hand
  //
  G4double a, z;

  G4Element* H = new G4Element("Hydrogen", "H", z = 1., a = 1.01 * g / mole);
  G4Element* O = new G4Element("Oxygen", "O", z = 8., a = 16.00 * g / mole);
  G4Element* Ge = new G4Element("Germanium", "Ge", z = 32., a = 72.59 * g / mole);
  G4Element* Bi = new G4Element("Bismuth", "Bi", z = 83., a = 208.98 * g / mole);

  //
  // define materials
  //
  G4double density;
  G4int ncomponents, natoms;

  // water with ionisation potential 78 eV
  G4Material* H2O = new G4Material("Water", density = 1.00 * g / cm3, ncomponents = 2);
  H2O->AddElement(H, natoms = 2);
  H2O->AddElement(O, natoms = 1);
  H2O->GetIonisation()->SetMeanExcitationEnergy(78.0 * eV);

  // pure materails
  new G4Material("liquidArgon", z = 18., a = 39.95 * g / mole, density = 1.390 * g / cm3);
  new G4Material("Aluminium", z = 13., a = 26.98 * g / mole, density = 2.7 * g / cm3);
  new G4Material("Iron", z = 26., a = 55.85 * g / mole, density = 7.87 * g / cm3);
  new G4Material("Copper", z = 29., a = 63.55 * g / mole, density = 8.960 * g / cm3);
  new G4Material("Tungsten", z = 74., a = 183.84 * g / mole, density = 19.35 * g / cm3);
  new G4Material("Lead", z = 82., a = 207.19 * g / mole, density = 11.35 * g / cm3);
  new G4Material("Uranium", z = 92., a = 238.03 * g / mole, density = 18.95 * g / cm3);

  // compound material
  G4Material* BGO = new G4Material("BGO", density = 7.10 * g / cm3, ncomponents = 3);
  BGO->AddElement(O, natoms = 12);
  BGO->AddElement(Ge, natoms = 3);
  BGO->AddElement(Bi, natoms = 4);

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

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void DetectorConstruction::UpdateParameters()
{
  G4double Radl = fMaterial->GetRadlen();
  fDLlength = fDLradl * Radl;
  fDRlength = fDRradl * Radl;
  fEcalLength = fNLtot * fDLlength;
  fEcalRadius = fNRtot * fDRlength;
  if (nullptr != fSolidEcal) {
    fSolidEcal->SetOuterRadius(fEcalRadius);
    fSolidEcal->SetZHalfLength(0.5 * fEcalLength);
  }
}

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G4VPhysicalVolume* DetectorConstruction::Construct()
{
  UpdateParameters();
  //
  // Ecal
  //
  if (nullptr == fPhysiEcal) {
    fSolidEcal = new G4Tubs("Ecal", 0., fEcalRadius, 0.5 * fEcalLength, 0., 360 * deg);
    fLogicEcal = new G4LogicalVolume(fSolidEcal, fMaterial, "Ecal", 0, 0, 0);
    fPhysiEcal = new G4PVPlacement(0, G4ThreeVector(), fLogicEcal, "Ecal", 0, false, 0);
  }
  G4cout << "\n Absorber is " << G4BestUnit(fEcalLength, "Length") << " of " << fMaterial->GetName()
         << "  R= " << fEcalRadius / cm << " cm \n"
         << G4endl;
  G4cout << fMaterial << G4endl;
  //
  // always return the physical World
  //
  return fPhysiEcal;
}

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void DetectorConstruction::SetMaterial(const G4String& materialChoice)
{
  // search the material by its name
  G4Material* pttoMaterial = G4NistManager::Instance()->FindOrBuildMaterial(materialChoice);

  if (pttoMaterial && fMaterial != pttoMaterial) {
    fMaterial = pttoMaterial;
    if (nullptr != fLogicEcal) {
      fLogicEcal->SetMaterial(fMaterial);
    }
    G4RunManager::GetRunManager()->PhysicsHasBeenModified();
  }
}

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void DetectorConstruction::SetLBining(const G4ThreeVector& Value)
{
  fNLtot = (G4int)Value(0);
  if (fNLtot > kMaxBin) {
    G4cout << "\n ---> warning from SetLBining: " << fNLtot << " truncated to " << kMaxBin
           << G4endl;
    fNLtot = kMaxBin;
  }
  fDLradl = Value(1);
  UpdateParameters();
}

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void DetectorConstruction::SetRBining(const G4ThreeVector& Value)
{
  fNRtot = (G4int)Value(0);
  if (fNRtot > kMaxBin) {
    G4cout << "\n ---> warning from SetRBining: " << fNRtot << " truncated to " << kMaxBin
           << G4endl;
    fNRtot = kMaxBin;
  }
  fDRradl = Value(1);
  UpdateParameters();
}

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void DetectorConstruction::ConstructSDandField()
{
  // Create global magnetic field
  // Create global magnetic field messenger.
  // Uniform magnetic field is then created automatically if
  // the field value is not zero.
  G4ThreeVector fieldValue = G4ThreeVector();
  fMagFieldMessenger = new G4GlobalMagFieldMessenger(fieldValue);
  fMagFieldMessenger->SetVerboseLevel(1);

  // Register the field messenger for deleting
  G4AutoDelete::Register(fMagFieldMessenger);
}

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