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//
/// \file Analysis.cc
/// \brief Implementation of the Analysis class
///
/// Define histograms

#include "Analysis.hh"

#include "TFile.h"
#include "TH1.h"
#include "TH2.h"
#include "TROOT.h"

#include "G4AutoLock.hh"
#include "G4SystemOfUnits.hh"

G4ThreadLocal G4int Analysis::fincidentFlag = false;
G4ThreadLocal Analysis* the_analysis = 0;

G4Mutex rootm = G4MUTEX_INITIALIZER;

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
Analysis* Analysis::GetAnalysis()
{
  if (!the_analysis) the_analysis = new Analysis;
  return the_analysis;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
Analysis::Analysis()
{
  G4AutoLock l(&rootm);
  // define histograms
  fincident_map = new TH2D("incident map", "Incident Distributuon", 50, -5., 5., 50, -5., 5.);
  fincident_map->GetXaxis()->SetTitle("X (cm)");
  fincident_map->GetYaxis()->SetTitle("Y (cm)");
  fincident_map->SetStats(0);

  fincident_x_hist = new TH1D("incident x", "Incident X", 100, -5., 5.);
  fincident_x_hist->GetXaxis()->SetTitle("X (cm)");
  fincident_x_hist->SetFillColor(kRed);

  fdose_map = new TH2D("dose map", "Dose Distribution", 500, 0., 50., 200, -10., 10.);
  fdose_map->GetXaxis()->SetTitle("Z (cm)");
  fdose_map->GetYaxis()->SetTitle("X (cm)");
  fdose_map->SetStats(0);

  fdose_hist = new TH1D("dose", "Dose Distribution", 500, 0., 50.);
  fdose_hist->GetXaxis()->SetTitle("Z (cm)");
  fdose_hist->GetYaxis()->SetTitle("Dose (GeV)");
  fdose_hist->SetFillColor(kBlue);
  fdose_hist->SetStats(0);
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
Analysis::~Analysis()
{
  delete fincident_map;
  delete fincident_x_hist;
  delete fdose_map;
  delete fdose_hist;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
void Analysis::Update()
{
  return;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
void Analysis::Clear()
{
  fincident_map->Reset();
  fincident_x_hist->Reset();
  fdose_map->Reset();
  fdose_hist->Reset();

  return;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
void Analysis::Save(const G4String& fname)
{
  G4AutoLock l(&rootm);
  TFile* file = new TFile(fname.c_str(), "RECREATE", "Geant4 ROOT analysis");

  fincident_map->Write();
  fincident_x_hist->Write();
  fdose_map->Write();
  fdose_hist->Write();

  file->Close();

  delete file;

  return;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
void Analysis::FillIncident(const G4ThreeVector& p)
{
  if (!fincidentFlag) {
    fincident_map->Fill(p.x() / cm, p.y() / cm);
    fincident_x_hist->Fill(p.x() / cm);

    fincidentFlag = true;
  }
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
void Analysis::FillDose(const G4ThreeVector& p, G4double dedx)
{
  const G4double Z0 = 25. * cm;
  const G4double dxy = 10. * mm;

  if (std::abs(p.y()) < dxy) {
    fdose_map->Fill((p.z() + Z0) / cm, p.x() / cm, dedx / GeV);

    if (std::abs(p.x()) < dxy) {
      fdose_hist->Fill((p.z() + Z0) / cm, dedx / GeV);
    }
  }
}
