/*
 * RigFillAction.cpp
 *
 *  Created on: 14/lug/2009
 *      Author: Nicola Mori
 */

/*! @file RigFillAction.cpp The RigFillAction class implementation file. */

#include "RigFillAction.h"

void RigFillAction::_InitHistos(vector<float> &bins) {

  _bins = bins;

  // Initializing histograms
  _rootHisto.SetName("rfHisto");
  _rootHisto.SetTitle(Form("Rc Vs R (thr.: %.2f)", _thresholdCoeff));
  _rootHisto.GetXaxis()->SetTitle("R (GV)");
  _rootHisto.GetYaxis()->SetTitle("Rc (GV)");

  Double_t *auxArray = new Double_t[_bins.size()];

  for (unsigned int i = 1; i < _bins.size(); i++) {
    auxArray[i] = _bins[i];
  }

  _rootHisto.SetBins(_bins.size() - 1, auxArray, _bins.size() - 1, auxArray);
  delete[] auxArray;

  _zeroCutoffBins.resize(_bins.size() - 1, 0);
  _textHisto.Resize(_bins.size() - 1, _bins.size() - 1, 0);
}

RigFillAction::RigFillAction(const char *actionName, TString outFileBase, vector<float> &bins, float thresholdCoeff) :
  CollectionAction(actionName), _outFileBase(outFileBase), _bins(0), _rootHisto(), _textHisto(0, 0, 0),
      _zeroCutoffBins(0), _thresholdCoeff(thresholdCoeff) {

  _InitHistos(bins);

}

RigFillAction::RigFillAction(const char *actionName, TString outFileBase, TString rigBinsFile, float thresholdCoeff) :
  CollectionAction(actionName), _outFileBase(outFileBase), _bins(0), _rootHisto(), _textHisto(0, 0, 0),
      _zeroCutoffBins(0), _thresholdCoeff(thresholdCoeff) {

  // Reading the bins from file
  ifstream rigBinListFile;
  rigBinListFile.open(rigBinsFile);

  TString auxString;
  vector<float> bins(0);
  while (!rigBinListFile.eof()) {
    rigBinListFile >> auxString;
    if (auxString != "") {
      bins.push_back(auxString.Atof());
    }
  }
  rigBinListFile.close();

  _InitHistos(bins);

}

void RigFillAction::OnGood(PamLevel2 *event) {

  float rigThreshold = _thresholdCoeff * event->GetOrbitalInfo()->GetCutoffSVL();
  float rig = event->GetTrack(0)->GetTrkTrack()->GetRigidity();

  _rootHisto.Fill(rigThreshold, rig);

  //Bin identification: value must be less than (<) bin maximum

  int i = 1;
  while (rig >= _bins[i] && i < (int) _textHisto.GetNRows()) {
    i++;
  }
  i--;

  //Check the zero bins
  if (rigThreshold < _bins[0])
    _zeroCutoffBins[i]++;
  else {
    int j = 1;
    while (rigThreshold >= _bins[j] && j < (int) _textHisto.GetNCols()) {
      j++;
    }
    j--;

    if (i < (int) _textHisto.GetNRows() && j < (int) _textHisto.GetNCols())
      _textHisto[i][j]++;
  }
}

void RigFillAction::Finalize() {

  // Write the text file
  if (_outFileBase != "") {

    ofstream outTextFile((_outFileBase + ".txt").Data(), ios_base::out);
    for (unsigned int i = 0; i < _textHisto.GetNRows(); i++) {
      for (unsigned int j = 0; j < _textHisto.GetNCols(); j++) {
        outTextFile << setw(7) << _textHisto[i][j] << "  ";
      }
      outTextFile << "\n";
    }
    outTextFile.close();

    // Write the report file, where zero bins are recorded
    outTextFile.open((_outFileBase + "-report.txt").Data(), ios_base::out);
    outTextFile << "Zero bins for cutoff rigidity: \n";
    for (unsigned int i = 0; i < _zeroCutoffBins.size(); i++)
      cout << GetCutoffZeroBins()[i] << "\n";

    // Write the ROOT file
    TFile outRootFile((_outFileBase + ".root"), "RECREATE");
    outRootFile.cd();
    _rootHisto.Write();
    outRootFile.Close();

  }
}