////////////////////////////////////////////////////////////////////////
/// \class RAT::PCABits
///
/// \brief This class initializes the PCA status words
///
/// \author Freija Descamps <FBDescamps@lbl.gov>
///
/// REVISION HISTORY:\n
///     15 Feb 2013 : F. Descamps V1 - first version \n
///     14 Oct 2014 : F. Descamps - Small cppcheck fix
///     10 Nov 2016 : F. Descamps - Add BeginOfRun for DB access
///
/// \details This class defines the bits in the various status words
///         used in the PCAProc processor. It also contains the packer
///         function which is used to pack the PCAProc results in
///         unsigned integers.
///
////////////////////////////////////////////////////////////////////////

#ifndef __RAT_PCABits__
#define __RAT_PCABits__

#include <RAT/DS/Run.hh>

#include <vector>
#include <string>

namespace RAT {
  class PCABits {
  public:
    typedef enum { PACK=1, UNPACK=2 } Direction;
    typedef enum { QTINTERPOLATION=1, GRADIENT_INTERCEPT=2 } DataType;
    PCABits();
    virtual ~PCABits();
    /// Initialise the PCA status words
    void BeginOfRun( DS::Run& );
    void InitialiseStatusWords();
    /// Pack or unpack the TW interpolation points and the fitresults
    // for the high-Q tail
    // direction: 1=pack; 2=unpack
    // datattype: 1=(Q,T) interpolation point,
    // 2=(gradient,intercept) fit to high Q tail
    int PCAPacker(Direction direction, ///< pack or unpack
                   DataType datatype,  ///< point or fit
                   int & packeddata, ///< the packed data
                   double & point1,  ///< the first point to pack
                   double & point2   ///< the second point to pack
                  );
    std::vector<std::string> fOverallMask; ///< Def of bits in overall status
    std::vector<std::string> fPMTTWMask;   ///< Def of bits in PMT TW status
    std::vector<std::string> fPMTGFMask;   ///< Def of bits in PMT GF status
  protected:
    int fQbits;
    int fTbits;
    int fIbits;
    int fRbits;
    int fQfact;
    int fTfact;
    int fIfact;
    int fRfact;
  };
} // namespace RAT
#endif