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/// \file electromagnetic/TestEm17/TestEm17.cc
/// \brief Main program of the electromagnetic/TestEm17 example
//
//
// 
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#include "G4RunManager.hh"
#include "G4UImanager.hh"
#include "Randomize.hh"

#include "DetectorConstruction.hh"
#include "PhysicsList.hh"
#include "PrimaryGeneratorAction.hh"

#include "RunAction.hh"
#include "SteppingAction.hh"
#include "SteppingVerbose.hh"
#include "StackingAction.hh"
#include "HistoManager.hh"

#include "G4UIExecutive.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);

  //choose the Random engine
  CLHEP::HepRandom::setTheEngine(new CLHEP::RanecuEngine);

  //my Verbose output class
  G4VSteppingVerbose::SetInstance(new SteppingVerbose);

  //construct the default run manager
  G4RunManager * runManager = new G4RunManager;

  //set mandatory initialization classes
  DetectorConstruction* det;
  PrimaryGeneratorAction* prim;
  runManager->SetUserInitialization(det = new DetectorConstruction);
  runManager->SetUserInitialization(new PhysicsList);
  runManager->SetUserAction(prim = new PrimaryGeneratorAction(det));

  HistoManager* histo = new HistoManager();

  //set user action classes
  RunAction* run;  
  runManager->SetUserAction(run = new RunAction(det,prim,histo)); 
  runManager->SetUserAction(new SteppingAction(run,histo));
  runManager->SetUserAction(new StackingAction);

  //initialize visualization
  G4VisManager* visManager = nullptr;

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

  if (ui)  {
   //interactive mode
   visManager = new G4VisExecutive;
   visManager->Initialize();
   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;
}

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