PrepDataToSimHitAssocAlg.h

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
#ifndef MUONTRUTHALGSR4_PREPDATATOSIMHITASSOCALG_H
#define MUONTRUTHALGSR4_PREPDATATOSIMHITASSOCALG_H
 
#include <AthenaBaseComps/AthReentrantAlgorithm.h>
 
#include <StoreGate/ReadHandleKey.h>
#include <StoreGate/WriteDecorHandleKey.h>
#include <xAODMuonSimHit/MuonSimHitContainer.h>
#include <xAODMuonPrepData/MuonMeasurementContainer.h>
#include <MuonIdHelpers/IMuonIdHelperSvc.h>
#include <MuonReadoutGeometryR4/MuonDetectorManager.h>
#include <xAODMuonViews/ChamberViewer.h>
 
namespace MuonR4{
    class PrepDataToSimHitAssocAlg : public AthReentrantAlgorithm{
        public:
            using AthReentrantAlgorithm::AthReentrantAlgorithm;
 
            StatusCode initialize() override final;
            StatusCode execute(const EventContext & ctx) const override final;
        private:
            template <typename Cont_t> using Viewer_t = xAOD::ChamberViewer<Cont_t>;
            template <typename PrdType_t>
                const xAOD::MuonSimHit* truthMatchPrd(Viewer_t<xAOD::MuonSimHitContainer>& simHits,
                                                      const xAOD::MuonMeasurement* measurement) const;

            SG::ReadHandleKey<xAOD::MuonSimHitContainer> m_simHitsKey{this, "SimHits" , ""};
            SG::ReadHandleKey<xAOD::MuonMeasurementContainer> m_prdHitKey{this, "Measurements", "Measurements"};
            using LinkType = ElementLink<xAOD::MuonSimHitContainer>;
            SG::WriteDecorHandleKey<xAOD::MuonMeasurementContainer> m_decorKey{this, "Decoration", m_prdHitKey, "simHitLink"};
            ServiceHandle<Muon::IMuonIdHelperSvc> m_idHelperSvc{this, "IdHelperSvc",  "Muon::MuonIdHelperSvc/MuonIdHelperSvc"};
    };
}
 
 
#endif