#ifndef TECALTrigChannelId_hxx_seen
#define TECALTrigChannelId_hxx_seen

#include "IChannelId.hxx"

namespace COMET 
{
  class IECALTrigChannelId; 
}

///Channel ID class for Channels using the ECAL electronics hierarchy
///
///Can answer detailed questions about its elements.
///This should be used for constructing IECALTrigChannelIds from the information available.
class COMET::IECALTrigChannelId : public COMET::IChannelId 
{
public:
  ///Construct a ECAL channel ID from a raw UInt_t
  explicit IECALTrigChannelId(UInt_t id =0);
  
  ///Constructor to specialise a Channel ID as a ECAL channel ID
  explicit IECALTrigChannelId(const COMET::IChannelId& src);

  ///Construct an ECAL channel ID from its electronics-space co-ordinates.
  ///The sub-detector ID should be COMET::IChannelId::kECALTrig, but is explicitly required.
  IECALTrigChannelId(const UInt_t subDet, const UInt_t Channel);
  
  virtual ~IECALTrigChannelId();
  
  ///Format as a human readable string
  virtual std::string AsString() const;

  /// Get the channel.
  virtual const UInt_t GetChannel() const;

  /// Encode set of the SimG4 geometry component numbers into ChannelId
  /// The second argument is ignored, just for the inheritance:IECALChannelId
  virtual void SetFromGeomComponentNumber(const UInt_t block, const UInt_t = -1);
  
  /// Convert this ChannelId into SimG4 geometrical component numbers.
  bool GetComponentNumber(UInt_t& block) const;
  
protected:
  
  /// @{ Define the sub-detector specific part of the channel id.  The
  /// sub-detector specific part of the channel id is a 25 bit field with
  /// bits number from 0 (lsb) to 24 (msb).  The sub-fields are defined
  ///
  /// bbbb bbbb bbbb xxxx xxxx xxxx x
  ///
  ///    b(12) [24:13] -- Block (Module) Channel
  ///    x(9)  [12: 0] -- Spare
  ///
  /// Note: The shift and the least significant bit (lsb) must be the same.
  enum BitDefinitions 
    { 
      kChanMSB  = 24, 
      kChanLSB  = 0,
      kBlockMSB = 24,
      kBlockLSB = 13,
      kSpareMSB = 12,
      kSpareLSB = 0
    };
  /// @}
  
private:
  /// Set the channel
  virtual void SetChannel(int val);
  
  // Release note:
  //  Ver.1 (unknown   ) Bit fields defined as the same as ECALGeomId
  //  Ver.2 (2015/11/16) Bit fields defined only for the block and crystal modules.
  ClassDef(IECALTrigChannelId, 1)
};
#endif