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/// \file B1/src/DetectorConstruction.cc
/// \brief Implementation of the B1::DetectorConstruction class

#include "DetectorConstruction.hh"

#include "G4RunManager.hh"
#include "G4NistManager.hh"
#include "G4Box.hh"
#include "G4Cons.hh"
#include "G4Orb.hh"
#include "G4LogicalVolume.hh"
#include "G4PVPlacement.hh"
#include "G4SystemOfUnits.hh"

namespace B1
{

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

G4VPhysicalVolume* DetectorConstruction::Construct()
{
  G4bool checkOverlaps = true;
  
  // Get nist material manager
  G4NistManager* nist = G4NistManager::Instance();
  G4Material* air = nist->FindOrBuildMaterial("G4_AIR");
  G4Material* material = nist->FindOrBuildMaterial("G4_WATER");

  // World
  auto solidWorld = new G4Box("World", 10*m, 10*m, 10*m);
  auto logicWorld = new G4LogicalVolume(solidWorld, air, "World");
  auto physWorld = new G4PVPlacement(nullptr, G4ThreeVector(), logicWorld, "World", nullptr,
				     false, 0, checkOverlaps);

  // Cone
  G4double r = 5*m, rmin = 0.5*m , rmax = 1*m, z = 0.5*m;;
  auto solidDet = new G4Cons("Detector", 0*m, rmin, 0*m, rmax, z, 0*deg, 360*deg);
  auto logicDet = new G4LogicalVolume(solidDet, material, "Detector");

  // Place boxes
  constexpr G4int ndet = 6;
  G4double theta[ndet] = { 15, 15, 15, 165, 165, 165 }; 
  G4double phi[ndet] = { 0, 120, -120, 0, 120, -120 }; 

  for (G4int i = 0; i < ndet; ++i)
  {
    G4int copyNumber = i + 1;
    auto transform =
      G4RotateX3D(-90*deg)*
      G4RotateZ3D(phi[i]*deg)*
      G4RotateY3D(theta[i]*deg)*
      G4TranslateZ3D(r);
    /*
    auto transform =
      G4RotateY3D(phi[i]*deg)*
      G4RotateX3D(theta[i]*deg)*
      G4TranslateY3D(r)* 
      G4RotateX3D(-90*deg);
    */
    new G4PVPlacement(transform, logicDet, "Detector", logicWorld,
		      false, copyNumber, checkOverlaps);
  }

  //always return the physical World
  fScoringVolume = logicWorld;
  return physWorld;
}

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

}