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//
// -------------------------------------------------------------
//
//
//      ---------- EventAction -------------
//
//  Modified: 05.04.01 Vladimir Ivanchenko new design of IBREM
//
// -------------------------------------------------------------

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#include "EventAction.hh"
#include "Histo.hh"
#include "EventActionMessenger.hh"

#include "G4UImanager.hh"
#include "G4TrajectoryContainer.hh"
#include "G4Trajectory.hh"
#include "G4VVisManager.hh"
#include "G4ios.hh"

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EventAction::EventAction():
  nEvt(0),
  verbose(0),
  printModulo(100),
  nSelected(0),
  //  drawFlag("all")
  drawFlag("charged")
  // drawFlag("neutral")
{
  // drawFlags = all, charged, neutral, charged+n
  eventMessenger = new EventActionMessenger(this);
  UI = G4UImanager::GetUIpointer();
  selectedEvents.clear();
}

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EventAction::~EventAction()
{}

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void EventAction::BeginOfEventAction(const G4Event*)
{
  // New event
  nEvt++;
  (Histo::GetPointer())->AddEvent();

  if(nSelected>0) {
    for(G4int i=0; i<nSelected; i++) {
      if(nEvt == selectedEvents[i]) {
        UI->ApplyCommand("/random/saveThisEvent");
      }
    }
  }

  // Switch on verbose mode
  /*
  if(hi->GetFirstEventToDebug() == nEvt) {
    verbose = 2;
    hi->SetVerbose(2);
    (G4UImanager::GetUIpointer())->ApplyCommand("/tracking/verbose 2");

    const G4ProcessManager* pm = G4Gamma::Gamma()->GetProcessManager();
    const G4ProcessVector* pv = pm->GetProcessList();
    G4int np = pm->GetProcessListLength();
    for(G4int i=0; i<np; i++) {
     ((*pv)[i])->SetVerboseLevel(2);
    }

  }

  // Switch off verbose mode
  if(hi->GetLastEventToDebug() == nEvt-1) {
    verbose = 0;
    hi->SetVerbose(0);
    (G4UImanager::GetUIpointer())->ApplyCommand("/tracking/verbose 0");
  }
  */

  // Initialize user actions
  if(verbose > 0) {
    G4cout << "EventAction: Event # "
           << nEvt << " started" << G4endl;
  }

}

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void EventAction::EndOfEventAction(const G4Event* evt)
{
  (Histo::GetPointer())->SaveEvent();
  G4VVisManager* pVVisManager = G4VVisManager::GetConcreteInstance();

  if(pVVisManager) {
    G4TrajectoryContainer* trjc = evt->GetTrajectoryContainer();
    G4int n_trajectories = 0;
    if (trjc) n_trajectories = trjc->entries();

    for(G4int i=0; i<n_trajectories; i++) {
      G4Trajectory* t = (G4Trajectory*)((*(evt->GetTrajectoryContainer()))[i]);
      if (drawFlag == "all") t->DrawTrajectory(1000);
      else if ((drawFlag == "charged")&&(t->GetCharge() != 0.))
                             t->DrawTrajectory(1000);
      else if ((drawFlag == "neutral")&&(t->GetCharge() == 0.))
                             t->DrawTrajectory(1000);
      else if ((drawFlag == "charged+n")&&((t->GetCharge() != 0.)||
                                           (t->GetCharge()==0.&&t->GetParticleName()=="neutron")))
                             t->DrawTrajectory(1000);
   }
  }

  if(verbose > 0) {
    G4cout << "EventAction: Event # "
           << nEvt << " ended" << G4endl;
  }
}

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