/**  Declaration file to open an Aires generated shower file on disc
     
  \author Troy Porter
  \date 22 May 2003
  \version $Id$
*/

#ifndef _io_AiresShowerFile_h_
#define _io_AiresShowerFile_h_

#include <io/VEventFile.h>
//#include <io/AiresShowerFileParticleIterator.h>

#include <algorithm>
#include <map>


namespace io {

/** 
  
  \class AiresShowerFile
  \brief Utility to open an Aires generated shower file on disc
     
  \author Troy Porter
  \date 22 May 2003
  \version $Id$
  \ingroup aires
*/


  class AiresShowerFileParticleIterator;

  class AiresShowerFile : public VEventFile {
    
  public:
    AiresShowerFile();
    AiresShowerFile(const std::string& filename, const Mode theMode = eRead);
    virtual ~AiresShowerFile();

    void Open(const std::string& filename, const Mode theMode = eRead);
    void Close();

    Status Read(evt::Event& event);
    void Write(const evt::Event& event);
    Status FindEvent(unsigned int n);
    Status GotoPosition(unsigned int n);
    int GetNEvents();

  private:
    bool fIsOpen;
    AiresShowerFileParticleIterator *fParticleIterator;

    int fChannel, fVerbosity, fReturnCode; // Channel, Verbosity and file info
    int fInitLevel, fCodsys, fIrc; // Used for initialisation of AIRES
    int fSkipHeader, fLogBase; // Used when opening the AIRES file
    bool fAltType;

    // Indices into the AIRES data file

    // Particle record
    int fGroundParticleCodeIndex;
    int fLogRIndex, fLogEIndex;
    int fThetaIndex;
    int fUxIndex, fUyIndex;
    int fTimeIndex, fWeightIndex;

    // Header record
    int fPrimaryCodeIndex;
    int fShowerNumberIndex;
    int fPrimaryLogEIndex, fPrimaryZenithIndex, fPrimaryAzimuthIndex;
    int fPrimaryThinningIndex;
    int fFirstInteractionDepthIndex;
    int fInjectionAltitudeIndex;
    int fGlobalTimeShiftIndex;

    // Trailer record
    int fTotalParticlesInShowerIndex;
    int fNumberGroundParticlesIndex;
    int fLongFitReturnCodeIndex;
    int fShowerMaxIndex;
    int fTotalChargedParticlesIndex;

    // Data associated with the shower file header

    int fNumberDiffPrimaries;
    int fPrimaryEnergyDist;
    int fZenithDist, fAzimuthDist;
    int fNumObsLvls;
    int fAtmosphereModel;
    int fFirstShowerNumber;
    int fShowerPrimaryCode;

    double fMinPrimaryEnergy;
    double fMaxPrimaryEnergy;
    double fEnergyExponent;
    double fMinZenith;
    double fMaxZenith;
    double fMinAzimuth;
    double fMaxAzimuth;
    double fThinningParameter;
    double fInjectionAltitude;
    double fInjectionDepth;
    double fGroundAltitude;
    double fGroundDepth;
    double fSiteLatitude;
    double fSiteLongitude;
    double fShowerPrimaryWeight;
    double fGeomagneticFieldStrength;
    double fGeomagneticFieldInclination;
    double fGeomagneticFieldDeclination;
    double fMinRadiusCut;
    double fMaxRadiusCut;

    // Do not change the dimensions of these arrays! The AIRES manual claims
    // fIntData and fDoubleData (when passed to getcrorecord()) need to have
    // a dimension of 30, but this can cause a segmentation violation. Changing
    // the size to 99 appears to fix this problem.

    // TAP - 09/02/2006 moved fIntData and fDoubleData to be local to functions
    // that use them. This will easily enable the resolution of bug #242 as 
    // well as cleanup of the code

    int fNumRecords[5];//, fIntData[99];
    //double fDoubleData[99];
    int fCurrentShowerNumber, fCurrentRecordNumber;

    std::string fChargeTableAppendix, fdEdXTableAppendix;
    std::string fGammaTableAppendix;
    std::string fElectronTableAppendix;
    std::string fMuonTableAppendix;
    typedef std::map<int, std::pair<int, int> > DataLocationsType;
    DataLocationsType fDataLocations;
    DataLocationsType::iterator fCurrentShowerLocation;

    // Private methods

    void Init();
    void SetRecordIndices();
    void SetRecordInformation();
 
    friend class AiresShowerFileParticleIterator;

  };

}


#endif

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