////////////////////////////////////////////////////////////////////
/// \class RAT::DU::ChanSWStatus
///
/// \brief Functions to test whether a channel passes CSS selection.
///
/// \author Billy Liggins (billy.liggins@qmul.ac.uk)
///
/// REVISION HISTORY:\n
///     13th Oct 2017 : Initial file.
///     27th Mar 2019 : Update for Charge Cuts - LN
///
///
////////////////////////////////////////////////////////////////////
#ifndef __RAT_DU_ChanSWStatus__
#define __RAT_DU_ChanSWStatus__

#include <TObject.h>

#include <string>
#include <map>
#include <vector>

namespace RAT
{
    namespace DU
    {

        class ChanSWStatus : public TObject
        {
            public:

                /// Construct set constant threshold usage to false
                ChanSWStatus() : TObject(), fResultExist(false) { }

                enum Bit { RunLength = 1, HighOcc=2, LowOcc=3, QHS=4,
                    QHL=5, QLX=6, TAC=7, ECA=8, PCA=9, CHS=10,
                    CHS_STANDARD=11};

                /// Initialize with current DB values at the start of a new run.
                void
                BeginOfRun();

                /// Check if the channel is deemed CSS good.
                ///
                /// @return true if pass.
                bool
                IsTubeStable( const unsigned int lcn ) const;

                //-------Combined ChanSWStatusBits--------

                /// Get the name of the data quality bit at index
                ///
                /// @param[in] index of the bit
                /// @return name of the bit
                /// @throws out_of_range if index is not valid
                std::string GetBitName( const size_t index ) const;

                /// Get the bit index from the name
                ///
                /// @param[in] name of the bit
                /// @return index of the bit
                /// @throws out_of_range if index is not valid
                size_t GetBitIndex( const std::string& name ) const;

                /// Outputs a list of the names and bit indices to the screen
                void DumpNames();

                /// Returns a vector of the bit names
                std::vector<std::string> GetBitNames() const;

                /// Returns fBitMap.
                const std::map<std::string, size_t>& GetBitMap() const;

                /// Returns fInverseBitMap.
                const std::map<size_t, std::string>& GetInverseBitMap() const;

                // This ROOT macro adds dictionary methods to this class.
                // The number is 0 as this class is never, and should never be written to disc.
                // It assumes this class has no virtual methods, use ClassDef if change this.
                ClassDefNV( ChanSWStatus, 0 );

            private:
                std::vector<int> channelMask;
                int fdefaultCSS;
                bool fResultExist; // True if the CSS_RESULT table is available.
                std::map<std::string, size_t> fBitMap; ///< Mapping between bit name and bit position
                std::map<size_t, std::string> fInverseBitMap; ///< Opposite mapping, bit position to bit name
        }; // class ChanSWStatus

    } // ::DU

} // namespace RAT

#endif // __RAT_DU_ChanSWStatus__