#include <string>
#include <iostream>
#include <iomanip>
#include <sstream>
#include <cmath>

#include "TROOT.h"
#include "TFile.h"
#include "TObject.h"
#include "TKey.h"
#include "TH1.h"
#include "TGraph.h"
#include "TRegexp.h"

#include "JTools/JQuantile.hh"

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

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


/**
 * \file
 *
 * Auxiliary program to print quantiles from ROOT histograms or graphs.
 * 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;
  vector<Double_t>        Q;
  int                     debug;
 
  try {

    JParser<> zap("Auxiliary program to print quantiles from ROOT histograms.");
    
    zap['f'] = make_field(inputFile,  "<input file>:<object name>");
    zap['Q'] = make_field(Q,          "quantiles");
    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();
	
	vector<Double_t> X(Q.size(), 0.0);

	try {
	  
	  TH1&    h1 = dynamic_cast<TH1&>(*object);

	  h1.GetQuantiles(Q.size(), X.data(), Q.data());
	}
	catch(const exception&) {}

	try {
	  
	  TGraph& g1 = dynamic_cast<TGraph&>(*object);

	  JQuantile Q1("", true);

	  for (Int_t i = 0; i != g1.GetN(); ++i) {
	    Q1.put(g1.GetX()[i], g1.GetY()[i]);
	  }
	  
	  for (size_t i = 0; i != Q.size(); ++i) {
	    X[i] = Q1.getQuantile(Q[i]);
	  }
	}
	catch(const exception&) {}

	for (vector<Double_t>::const_iterator i = X.begin(); i != X.end(); ++i) {
	  cout << ' ' << *i;
	}

	cout << endl;
      }
    }
  }
}