/**
 * \file CbmStsClusterFinder_old.h
 * \author Volker Friese <v.friese@gsi.de>
 * \since 11.09.06
 * \brief CBM task class for finding clusters in the STS
 *
 * Updated 26/06/2008 by R. Karabowicz.
 * Updated 03/03.2014 by A. Lebedev <andrey.lebedev@gsi.de>
 *
 **/

/** Legacy software. This class is replaced by CbmStsFindClusters (completely
 ** new implementation).
 **/


#ifndef CBMSTSCLUSTERFINDER_OLD_H
#define CBMSTSCLUSTERFINDER_OLD_H 1

#include "FairTask.h"

#include <map>
#include <set>

class TClonesArray;
class CbmGeoStsPar;
class CbmStsDigiPar;
class CbmStsDigiScheme;
class CbmStsSector;
class CbmTimeSlice;

using std::set;
using std::map;

/**
 * \class CbmStsClusterFinder_old
 * \brief CBM task class for finding clusters in the STS
 **/
class CbmStsClusterFinder_old : public FairTask
{
public:
    /**
     * \brief Default constructor.
     **/
    CbmStsClusterFinder_old();

    /**
     * \brief Destructor.
     **/
    virtual ~CbmStsClusterFinder_old();

    /**
     * \brief Inherited from FairTask.
     **/
    virtual InitStatus Init();

    /**
     * \brief Inherited from FairTask.
     **/
    virtual void Exec(Option_t* opt);

    /**
     * \brief Inherited from FairTask.
     **/
    virtual void Finish();

    /**
     * \brief Inherited from FairTask.
     **/
    virtual void SetParContainers();

private:
    void MakeSets();

    void AnalyzeClusters();

    void AnalyzeCluster(Int_t clusterId);

    void SortDigis();

    void FindClusters(Int_t stationNr, Int_t sectorNr, Int_t iSide, const set<Int_t>& digiSet);

    CbmStsClusterFinder_old(const CbmStsClusterFinder_old&);
    CbmStsClusterFinder_old operator=(const CbmStsClusterFinder_old&);

    TClonesArray* fDigis;             ///> Input array of CbmStsDigi
    CbmTimeSlice* fTimeSlice;         //! Input raw data timeslice
    /// FIXME: Why do we need a second array with cluster candidates which is written to file?
    /// FIXME: This array is not used anywhere outside this class.
    TClonesArray* fClusterCandidates; ///> Input array of CbmStsCluster
    TClonesArray* fClusters;          ///> Input array of CbmStsCluster
    Int_t fInputMode;    ///> 0 (default) = event; 1 = time slice

    CbmGeoStsPar* fGeoPar;         ///> Geometry parameters
    CbmStsDigiPar* fDigiPar;       ///> Digitisation parameters
    CbmStsDigiScheme* fDigiScheme; ///> Digitisation scheme

    /// FIXME: I was not able to understand why the pointer address maps to set?
    /// FIXME: Much better to use ID of the sector or something similar.
    std::map<const CbmStsSector*, std::set<Int_t> > fDigiMapF; ///> sector digis (front)
    std::map<const CbmStsSector*, std::set<Int_t> > fDigiMapB; ///> sector digis (back)

    ClassDef(CbmStsClusterFinder_old, 1);
};

#endif