#ifndef __JAANET__JEVTWEIGHTTOOLKIT__
#define __JAANET__JEVTWEIGHTTOOLKIT__

#include <vector>

#include "km3net-dataformat/offline/Head.hh"
#include "km3net-dataformat/offline/Evt.hh"

#include "JLang/JSharedPointer.hh"

#include "JAAnet/JHead.hh"
#include "JAAnet/JHeadToolkit.hh"
#include "JAAnet/JEvtWeight.hh"
#include "JAAnet/JEvtWeightDAQ.hh"
#include "JAAnet/JEvtWeightMupage.hh"
#include "JAAnet/JEvtWeightCorsika.hh"
#include "JAAnet/JEvtWeightGSeaGen.hh"
#include "JAAnet/JEvtWeightKM3BUU.hh"

/**
 * \author bjung
 */

namespace JAANET {

  using JLANG::JSharedPointer;
  using JLANG::JValueOutOfRange;


  /**
   * Look-up table for event weighters.
   */
  struct JEvtWeighter :
    public std::vector< JSharedPointer<JEvtWeight> >
  {
    /*
     * Constructor
     */
    JEvtWeighter()
    {
      this->push_back(new JEvtWeightGSeaGen());
      this->push_back(new JEvtWeightKM3BUU());
      this->push_back(new JEvtWeightCorsika());
      this->push_back(new JEvtWeightMupage());
      this->push_back(new JEvtWeightDAQ());
    }

      
    /**
     * Get event weighter corresponding to given header.
     *
     * \param  header          header
     * \return                 event weighter
     */
    const JEvtWeight& operator()(const JHead& header) const
    {
      for (const_iterator i = this->begin(); i != this->end(); ++i) {
	
	if ((*i)->check(header)) {
	  
	  return *(*i);
	}
      }
      
      THROW(JValueOutOfRange, "JEvtWeighter::operator(): No event weighter found for given header.");
    }
  };
  
  
  extern JEvtWeighter getEventWeighter;               //!< Function object for mapping header to event weighter.
}

#endif