#ifndef __JCOMPAREHISTOGRAMS__JTESTSIGNIFICANCE_2D__
#define __JCOMPAREHISTOGRAMS__JTESTSIGNIFICANCE_2D__

#include <istream>
#include <ostream>
#include "JCompareHistograms/JTest_t.hh"
#include "JCompareHistograms/JTestSignificance_t.hh"


/**
 * \author bofearraigh
 * \author rgruiz
 */
namespace JCOMPAREHISTOGRAMS {

  /**
   * Significance test applied to 2D histograms
   */
  class JTestSignificance_2D: 
    public JTest_t, 
    public JTestSignificance_t
  { 
  public:  

    /**
     * Default constructor.
     */
    JTestSignificance_2D() :
      JTest_t("Significance_2D", "Significance"),
      JTestSignificance_t()
    {}

    /**
     * Read test parameters from input.
     *
     * \param  in            input stream
     * \return               input stream
     */
    std::istream& read(std::istream& in) override{ 
      return in >> threshold >> K;
    };

    /**
     * Applies Significance test for two ROOT TH1 histograms.
     * 
     * \param o1 First histogram
     * \param o2 Second histogram
     */
    void test(TObject* o1, TObject* o2) override{    

      using namespace std;
    
      if (!(dynamic_cast<TH2*>(o1) == NULL) && !(dynamic_cast<TH2*>(o2) == NULL)) {

	TH2D* h1 =  dynamic_cast<TH2D*>(o1);
	TH2D* h2 =  dynamic_cast<TH2D*>(o2);
  
	if (h1 -> GetNbinsX() != h2 -> GetNbinsX() || h1 -> GetNbinsY() != h2 -> GetNbinsY())
	  ERROR("Histograms with different bining. The objects: " << h1 -> GetName() << " can not be compared." << endl);

	if (K<0)
	  K = h2->GetEntries()/h1->GetEntries();
      
	JTestResult r = JSignificanceTest<TH2D>(h1, h2, threshold, K, testName, resultType);
     
	results.push_back(r);
      }
    };

  private:
    double threshold;                           //!< threshold p-value to decide if test is passed.
    double K;                                   //!< normalization factor between histograms.
  };
}

#endif