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/// \file B2/B2b/include/DetectorConstruction.hh
/// \brief Definition of the B2b::DetectorConstruction class

#ifndef B2bDetectorConstruction_h
#define B2bDetectorConstruction_h 1

#include "G4VUserDetectorConstruction.hh"

#include "G4Threading.hh"
#include "globals.hh"

class G4VPhysicalVolume;
class G4LogicalVolume;
class G4Material;
class G4UserLimits;
class G4GlobalMagFieldMessenger;

namespace B2b
{

class DetectorMessenger;

/// Detector construction class to define materials, geometry
/// and global uniform magnetic field.

class DetectorConstruction : public G4VUserDetectorConstruction
{
  public:
    DetectorConstruction();
    ~DetectorConstruction() override;

  public:
    G4VPhysicalVolume* Construct() override;
    void ConstructSDandField() override;

    // Set methods
    void SetTargetMaterial(G4String);
    void SetChamberMaterial(G4String);
    void SetMaxStep(G4double);
    void SetCheckOverlaps(G4bool);

  private:
    // methods
    void DefineMaterials();
    G4VPhysicalVolume* DefineVolumes();

    // static data members
    static G4ThreadLocal G4GlobalMagFieldMessenger* fMagFieldMessenger;
    // magnetic field messenger
    // data members
    G4LogicalVolume* fLogicTarget = nullptr;  // pointer to the logical Target
    G4LogicalVolume* fLogicChamber = nullptr;  // pointer to the logical Chamber

    G4Material* fTargetMaterial = nullptr;  // pointer to the target  material
    G4Material* fChamberMaterial = nullptr;  // pointer to the chamber material

    G4UserLimits* fStepLimit = nullptr;  // pointer to user step limits

    DetectorMessenger* fMessenger = nullptr;  // messenger

    G4bool fCheckOverlaps = true;  // option to activate checking of volumes overlaps
};

}  // namespace B2b

#endif