#include <string>
#include <iostream>
#include <iomanip>
#include <limits>

#include "TROOT.h"
#include "TFile.h"
#include "TClass.h"
#include "TKey.h"
#include "TRegexp.h"
#include "TH2.h"
#include "TGraph2D.h"
#include "TProfile2D.h"

#include "JGizmo/JRootObjectID.hh"
#include "JGizmo/JGizmoToolkit.hh"

#include "Jeep/JPrint.hh"
#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"

  
/**
 * \file
 * Auxiliary program to print (x,y) of the maximum of 2D ROOT objects.
 * The option <tt>-f</tt> corresponds to <tt>\<file name\>:\<object name\></tt>.
 * \author mdejong
 */
int main(int argc, char **argv)
{
  using namespace std;
  using namespace JPP;

  vector<JRootObjectID>   inputFile;
  int                     debug;
 
  try {

    JParser<> zap("Auxiliary program to print (x,y) of the maximum of 2D ROOT objects.");
    
    zap['f'] = make_field(inputFile,  "<input file>:<object name>");
    zap['d'] = make_field(debug)      = 0;
     
    zap(argc, argv);
  }
  catch(const exception &error) {
    FATAL(error.what() << endl);
  }


  for (vector<JRootObjectID>::const_iterator input = inputFile.begin(); input != inputFile.end(); ++input) {

    DEBUG("Input: " << *input << endl);

    TDirectory* dir = getDirectory(*input);

    if (dir == NULL) {
      ERROR("File: " << input->getFullFilename() << " not opened." << endl);
      continue;
    }

    const TRegexp regexp(input->getObjectName());

    TIter iter(dir->GetListOfKeys());

    for (TKey* key; (key = (TKey*) iter.Next()) != NULL; ) {

      const TString tag(key->GetName());

      DEBUG("Key: " << tag << " match = " << tag.Contains(regexp) << endl);
	
      // option match

      if (tag.Contains(regexp) && isTObject(key)) {

        TObject* object = key->ReadObj();

	double x    = 0.0; 
	double y    = 0.0; 
	double zmax = numeric_limits<double>::lowest();

	try {

	  TH2& h2 = dynamic_cast<TH2&>(*object);

	  for (Int_t ix = 1; ix <= h2.GetXaxis()->GetNbins(); ++ix) {
	    for (Int_t iy = 1; iy <= h2.GetYaxis()->GetNbins(); ++iy) {

	      double z = h2.GetBinContent(ix,iy);

	      if (z > zmax) {
		zmax = z;
		x    = h2.GetXaxis()->GetBinCenter(ix);
		y    = h2.GetYaxis()->GetBinCenter(iy);
	      }
	    }
	  }
	}
	catch(exception&) {}

	try {

	  TProfile2D& h2 = dynamic_cast<TProfile2D&>(*object);

	  for (Int_t ix = 1; ix <= h2.GetXaxis()->GetNbins(); ++ix) {
	    for (Int_t iy = 1; iy <= h2.GetYaxis()->GetNbins(); ++iy) {

	      double z = h2.GetBinContent(ix,iy);

	      if (z > zmax) {
		zmax = z;
		x    = h2.GetXaxis()->GetBinCenter(ix);
		y    = h2.GetYaxis()->GetBinCenter(iy);
	      }
	    }
	  }
	}
	catch(exception&) {}

	try {

	  TGraph2D& g2 = dynamic_cast<TGraph2D&>(*object);

	  for (Int_t i = 0; i != g2.GetN(); ++i) {
	    if (g2.GetZ()[i] > zmax) {
	      zmax = g2.GetZ()[i];
	      x    = g2.GetX()[i];
	      y    = g2.GetY()[i];
	    }
	  }
	}
	catch(exception&) {}

	if (zmax != numeric_limits<double>::lowest()) {
	  cout << setw(32) << left << key->GetName() << right << ' ' << SCIENTIFIC(15,5) << x << ' ' << SCIENTIFIC(15,5) << y << endl;
	}
      }
    }
  }
}