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/// \file GB04BOptrBremSplitting.hh
/// \brief Definition of the GB04BOptrBremSplitting class

#ifndef GB04BOptrBremSplitting_hh
#define GB04BOptrBremSplitting_hh 1

#include "G4VBiasingOperator.hh"
class GB04BOptnBremSplitting;
class G4GenericMessenger;

class GB04BOptrBremSplitting : public G4VBiasingOperator
{
  public:
    GB04BOptrBremSplitting();
    ~GB04BOptrBremSplitting() override = default;

  public:
    // -------------------------
    // Optional from base class:
    // -------------------------
    // -- Call at run start:
    void StartRun() override;
    // -- Call at each track starting:
    void StartTracking(const G4Track* track) override;

  private:
    // -----------------------------
    // -- Mandatory from base class:
    // -----------------------------
    // -- Unused:
    G4VBiasingOperation* ProposeNonPhysicsBiasingOperation(
      const G4Track* /* track */, const G4BiasingProcessInterface* /* callingProcess */) override
    {
      return nullptr;
    }
    G4VBiasingOperation*
    ProposeOccurenceBiasingOperation(const G4Track* /* track */,
                                     const G4BiasingProcessInterface* /* callingProcess */) override
    {
      return nullptr;
    }
    // -- Used:
    G4VBiasingOperation*
    ProposeFinalStateBiasingOperation(const G4Track* track,
                                      const G4BiasingProcessInterface* callingProcess) override;

  private:
    // -- Avoid compiler complaining for (wrong) method shadowing,
    // -- this is because other virtual method with same name exists.
    using G4VBiasingOperator::OperationApplied;

  private:
    GB04BOptnBremSplitting* fBremSplittingOperation;
    G4int fSplittingFactor;
    G4bool fBiasPrimaryOnly;
    G4bool fBiasOnlyOnce;
    G4int fNInteractions;
    // Messengers to change the
    G4GenericMessenger* fSplittingFactorMessenger;
    G4GenericMessenger* fBiasPrimaryOnlyMessenger;
    G4GenericMessenger* fBiasOnlyOnceMessenger;
};

#endif
