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/// \file RE01.cc
/// \brief Main program of the runAndEvent/RE01 example

// --------------------------------------------------------------
//      GEANT4 - RE01 exsample code
//
// --------------------------------------------------------------
// Comments
//
//
// --------------------------------------------------------------

#include "QGSP_BERT.hh"
#include "RE01ActionInitialization.hh"
#include "RE01CalorimeterROGeometry.hh"
#include "RE01DetectorConstruction.hh"

#include "G4ParallelWorldPhysics.hh"
#include "G4RunManagerFactory.hh"
#include "G4Types.hh"
#include "G4UIExecutive.hh"
#include "G4UImanager.hh"
#include "G4UnknownDecayPhysics.hh"
#include "G4VisExecutive.hh"

int main(int argc, char** argv)
{
  // Instantiate G4UIExecutive if there are no arguments (interactive mode)
  G4UIExecutive* ui = nullptr;
  if (argc == 1) {
    ui = new G4UIExecutive(argc, argv);
  }

  auto* runManager = G4RunManagerFactory::CreateRunManager();

  // Visualization manager construction
  G4VisManager* visManager = new G4VisExecutive;
  visManager->Initialize();

  G4String parallelWorldName = "ReadoutWorld";
  G4VUserDetectorConstruction* detector = new RE01DetectorConstruction();
  detector->RegisterParallelWorld(new RE01CalorimeterROGeometry(parallelWorldName));
  runManager->SetUserInitialization(detector);

  G4VModularPhysicsList* physicsList = new QGSP_BERT;
  physicsList->RegisterPhysics(new G4UnknownDecayPhysics);
  physicsList->RegisterPhysics(new G4ParallelWorldPhysics(parallelWorldName));
  runManager->SetUserInitialization(physicsList);

  runManager->SetUserInitialization(new RE01ActionInitialization);

  runManager->Initialize();

  if (ui) {
    ui->SessionStart();
    delete ui;
  }
  else {
    G4UImanager* UImanager = G4UImanager::GetUIpointer();
    G4String command = "/control/execute ";
    G4String fileName = argv[1];
    UImanager->ApplyCommand(command + fileName);
  }

  delete visManager;

  delete runManager;

  return 0;
}