/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/


/* $Id$ */

/////////////////////////////////////////////////////////////////////
//                                                                 //
//  Checks the quality assurance.                                  //
//  By analysis of the histograms & comparing with reference data  //
//  S.Arcelli                                                      //
//                                                                 //
/////////////////////////////////////////////////////////////////////

#include "TH1.h"
#include "TList.h"

#include "AliLog.h"
//#include "AliQA.h"
//#include "AliQAChecker.h"

#include "AliTOFQAChecker.h"

ClassImp(AliTOFQAChecker)

//__________________________________________________________________
AliTOFQAChecker& AliTOFQAChecker::operator = (const AliTOFQAChecker& qac )
{
  // Equal operator.
  this->~AliTOFQAChecker();
  new(this) AliTOFQAChecker(qac);
  return *this;
}

//____________________________________________________________________________
const Double_t AliTOFQAChecker::Check(TList * list) 
{

  // Super-basic check on the QA histograms on the input list: 
  // look whether they are empty!

  Double_t test = 0.0  ;
  Int_t count = 0 ; 
  
  if (list->GetEntries() == 0){  
    test = 1. ; // nothing to check
  }
  else {
    TIter next(list) ; 
    TH1 * hdata ;
    count = 0 ; 
    while ( (hdata = dynamic_cast<TH1 *>(next())) ) {
      if (hdata) { 
	Double_t rv = 0.;
	if(hdata->GetEntries()>0)rv=1; 
	AliInfo(Form("%s -> %f", hdata->GetName(), rv)) ; 
	count++ ; 
	test += rv ; 
      }
      else{
	AliError("Data type cannot be processed") ;
      }
      
    }
    if (count != 0) { 
      if (test==0) {
	AliWarning("Histograms are there, but they are all empty: setting flag to kWARNING");
	test = 0.5;  //upper limit value to set kWARNING flag for a task
      }
      else {
	test /= count ;
      }
    }
  }

  AliInfo(Form("Test Result = %f", test)) ; 
  return test ; 
}