#ifndef analysis_IEventWeighter_hxx
#define analysis_IEventWeighter_hxx

#include <ICOMETEvent.hxx>
#include <IVWeighter.hxx>
#include <string>

namespace COMET{
    class IEventWeighter;
}

class COMET::IEventWeighter{
    private:
        IEventWeighter():
            fCurrentWeight(1),
            fWeighter(NULL){
            }
    public:
        ~IEventWeighter(){};

        static IEventWeighter& Instance(){
            static IEventWeighter instance;
            return instance;
        }

        static bool SetWeighter(const std::string& weighter);
        static double CalculateWeight(const COMET::ICOMETEvent& event);
        static double GetWeight(){
            return Instance().fCurrentWeight;
        }

    private:
        double fCurrentWeight;
        COMET::IVWeighter* fWeighter;
};

#endif // analysis_IEventWeighter_hxx