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

#include "PrimaryGeneratorMessenger.hh"

#include "PrimaryGeneratorAction.hh"

#include "G4SystemOfUnits.hh"
#include "G4UIcmdWithABool.hh"
#include "G4UIcmdWithADoubleAndUnit.hh"
#include "G4UIdirectory.hh"

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PrimaryGeneratorMessenger::PrimaryGeneratorMessenger(PrimaryGeneratorAction* Gun)
  : G4UImessenger(), fPrimaryAction(Gun)
{
  fGunDir = new G4UIdirectory("/opnovice2/gun/");
  fGunDir->SetGuidance("PrimaryGenerator control");

  fPolarCmd = new G4UIcmdWithADoubleAndUnit("/opnovice2/gun/optPhotonPolar", this);
  fPolarCmd->SetGuidance("Set linear polarization angle w.r.t. (k,n) plane");
  fPolarCmd->SetParameterName("angle", true);
  fPolarCmd->SetUnitCategory("Angle");
  fPolarCmd->SetDefaultValue(-360.0);
  fPolarCmd->SetDefaultUnit("deg");
  fPolarCmd->AvailableForStates(G4State_Idle);

  fRandomDirectionCmd = new G4UIcmdWithABool("/opnovice2/gun/randomDirection", this);
  fRandomDirectionCmd->SetGuidance("Set direction of each primary particle randomly.");
  fRandomDirectionCmd->SetDefaultValue(true);
  fRandomDirectionCmd->AvailableForStates(G4State_Idle, G4State_PreInit);
}

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PrimaryGeneratorMessenger::~PrimaryGeneratorMessenger()
{
  delete fPolarCmd;
  delete fGunDir;
  delete fRandomDirectionCmd;
}

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void PrimaryGeneratorMessenger::SetNewValue(G4UIcommand* command, G4String newValue)
{
  if (command == fPolarCmd) {
    G4double angle = fPolarCmd->GetNewDoubleValue(newValue);
    if (angle == -360.0 * deg) {
      fPrimaryAction->SetOptPhotonPolar();
    }
    else {
      fPrimaryAction->SetOptPhotonPolar(angle);
    }
  }
  else if (command == fRandomDirectionCmd) {
    fPrimaryAction->SetRandomDirection(true);
  }
}

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