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/// \file LXe.cc
/// \brief Main program of the optical/LXe example

#include "FTFP_BERT.hh"
#include "LXeActionInitialization.hh"
#include "LXeDetectorConstruction.hh"

#include "G4EmStandardPhysics_option4.hh"
#include "G4OpticalParameters.hh"
#include "G4OpticalPhysics.hh"
#include "G4RunManagerFactory.hh"
#include "G4String.hh"
#include "G4Types.hh"
#include "G4UIExecutive.hh"
#include "G4UImanager.hh"
#include "G4VisExecutive.hh"

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int main(int argc, char** argv)
{
  // detect interactive mode (if no arguments) and define UI session
  G4UIExecutive* ui = nullptr;
  if (argc == 1) {
    ui = new G4UIExecutive(argc, argv);
  }

  auto runManager = G4RunManagerFactory::CreateRunManager();

  auto det = new LXeDetectorConstruction();
  runManager->SetUserInitialization(det);

  G4VModularPhysicsList* physicsList = new FTFP_BERT;
  physicsList->ReplacePhysics(new G4EmStandardPhysics_option4());

  auto opticalPhysics = new G4OpticalPhysics();
  auto opticalParams = G4OpticalParameters::Instance();

  opticalParams->SetWLSTimeProfile("delta");

  opticalParams->SetScintTrackSecondariesFirst(true);

  opticalParams->SetCerenkovMaxPhotonsPerStep(100);
  opticalParams->SetCerenkovMaxBetaChange(10.0);
  opticalParams->SetCerenkovTrackSecondariesFirst(true);

  physicsList->RegisterPhysics(opticalPhysics);
  runManager->SetUserInitialization(physicsList);

  runManager->SetUserInitialization(new LXeActionInitialization(det));

  // initialize visualization
  G4VisManager* visManager = new G4VisExecutive;
  visManager->Initialize();

  // get the pointer to the User Interface manager
  G4UImanager* UImanager = G4UImanager::GetUIpointer();

  if (ui) {
    // interactive mode
    UImanager->ApplyCommand("/control/execute vis.mac");
    if (ui->IsGUI()) {
      UImanager->ApplyCommand("/control/execute gui.mac");
    }
    ui->SessionStart();
    delete ui;
  }
  else {
    // batch mode
    G4String command = "/control/execute ";
    G4String fileName = argv[1];
    UImanager->ApplyCommand(command + fileName);
  }

  // job termination
  delete visManager;
  delete runManager;
  return 0;
}

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