/**
   \file
   Reader for CONEX generated shower profiles

   \author Ralf Ulrich
   \version $Id: CONEXFile.h 16394 2010-05-05 13:59:38Z munger $
   \date Thu Apr  7 16:46:28 CEST 2005
*/

#ifndef _io_CONEXFile_h_
#define _io_CONEXFile_h_

static const char CVSId_io_CONEXFile[] =
  "$Id: CONEXFile.h 16394 2010-05-05 13:59:38Z munger $";

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


namespace evt {
  class Event;
}


// root forward-decl
class TFile;
class TTree;


namespace io {

    class CONEXHeader;
    class CONEXShower;

    /**
       \class CONEXFile CONEXFile.h "io/CONEXFile.h"

       \brief Read profiles from CONEX

       \author Ralf Ulrich
       \date Thu Apr  7 16:47:01 CEST 2005
       \ingroup conex
    */

    class CONEXFile : public VEventFile {
	
    public:
	CONEXFile();
	CONEXFile(const std::string& theFileName, const Mode theMode = eRead);

	virtual ~CONEXFile();

	virtual void Open(const std::string& theFileName, 
			  const Mode theMode = eRead);

	virtual void Close();

	virtual Status Read(evt::Event& theEvent);

	virtual void Write(const evt::Event& theEvent);

	virtual Status FindEvent(const unsigned int eventId);
	
	virtual Status GotoPosition(const unsigned int position);

	virtual int GetNEvents();

	/// Get CONEXFileParticleIterator for testing
	//CONEXFileParticleIterator* 
	//GetCONEXFileParticleIterator() const;

    private:
	void MapHeader(const float Version);
	void MapShower(const float Version);

	virtual int NextEntry();

	TFile* fFile;
	TTree* fShowerTree;
	TTree* fHeaderTree;

	CONEXShower* fShower;
	CONEXHeader* fHeader;
        double fFirstGrammageBin;

	float fVersion;
	float fROOTVersion;

	//positionVector       fPositionToRaw;
	//	positionVector       fPositionOfEventTrailer;
	//idToPositionMap      fIdToPosition;
	unsigned int fCurrentPosition;

	//CONEXFileParticleIterator* fParticleIterator;
  };

}


#endif

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