#ifndef  ANALYSIS_IPARTICLEDETAILS_HXX
#define  ANALYSIS_IPARTICLEDETAILS_HXX

#include <string>
#include <map>

#include <TParticlePDG.h>

namespace COMET{
    class IParticle;
    class IParticleDetails;
}

class COMET::IParticle{
    public:
        IParticle():fIsValid(false){}
        IParticle(
                const std::string& name,
                int pdgCode,
                const TParticlePDG* rooParticle
                );
        bool IsDynamic()const{return fParticleName=="dynamic";}
        int GetCharge()const{
            if(!fRootParticle) return 0;
            return fRootParticle->Charge()*3;
        }
        const TParticlePDG* GetRootParticle(){return fRootParticle;}
        const std::string& Name()const{return fParticleName;}
        int Code()const{return fParticleCode;}
        int LineColour()const{return fLineColour;}
        int LineStyle()const{return fLineStyle;}
        double Mass()const{
            if(!fRootParticle) return 0;
            return fRootParticle->Mass();
        }
        bool operator!()const{return ! IsValid();}
        bool IsValid()const{return fIsValid;}

    private:
        std::string fParticleName;
        int fParticleCode;
        int fLineColour;
        int fLineStyle;
        const TParticlePDG* fRootParticle;
        bool fIsValid;
        friend class COMET::IParticleDetails;
};

class COMET::IParticleDetails{

    private:
        IParticleDetails();
        virtual ~IParticleDetails(){}

        static void Initialise();
        const COMET::IParticle* GetDetails(int pdgCode, const TParticlePDG* rooParticle);

        COMET::IParticle* AddParticle(
                const std::string& name,
                int pdgCode,
                const TParticlePDG* rooParticle,
                int lineColour=-1, int lineStyle=-1
                );

        enum {kDynamicParticle=1000000000 };
        const COMET::IParticle* MakeOrGetDynamicParticle(int pdgCode=kDynamicParticle);
        const COMET::IParticle* MakeNewParticle( int pdgCode);
        const COMET::IParticle* MakeNewParticle( const std::string& name);

    public:
        static const COMET::IParticle& GetParticle(const std::string& name);
        static const COMET::IParticle& GetParticle(int pdgCode);

    private:
        typedef std::map<int,COMET::IParticle*> PdgParticleDetailsMap;
        PdgParticleDetailsMap fParticleDetailsMap;

        static IParticleDetails* fThis;
        static COMET::IParticle fInvalidParticle;

};

#endif //  ANALYSIS_IPARTICLEDETAILS_HXX