///
/// Copyright (c) 2015-2017 Sensus Metering Systems
///
using System;

namespace TBF.BenchControl.TestMethods.GenesisCommunication.GenesisHead
{
	public class CalibrationStruct
	{
		public static readonly int Length = 35;

		public Byte Version;
		public MeterType MeterType;
		public UInt16 Calibration;
		public VolumeUnits VolumeUnits;
		public FlowArrow FlowArrow;
		public UInt16 FWVersion;
		public UInt16[] TargetField;
		public UInt16 RecipMeanCurrent;
		public UInt16 ThresholdVolume;
		public UInt16 ThresholdTime;
		public UInt16 FlowActivationThr;
		public UInt16 VolumeArrowThr;
		public UInt32 CalibrationTime;
		public ulong SerialNumber;
		public MeterSealed MeterSealed;
		public byte CheckSum;


		public CalibrationStruct()
		{
			TargetField = new UInt16[3];
		}

		public byte[] ToByteArray()
		{
			byte[] result = new byte[Length];

			result[0] = Version;
			result[1] = (byte)MeterType;

			result[2] = (byte)(Calibration & 0x00FF);
			result[3] = (byte)((Calibration >> 8) & 0x00FF);

			result[4] = (byte)VolumeUnits;

			result[5] = (byte)FlowArrow;

			result[6] = (byte)(FWVersion & 0x00FF);
			result[7] = (byte)((FWVersion >> 8) & 0x00FF);

			result[8] = (byte)( TargetField[0] & 0x00FF);
			result[9] = (byte)((TargetField[0] >> 8) & 0x00FF);
			result[10] = (byte)( TargetField[1] & 0x00FF);
			result[11] = (byte)((TargetField[1] >> 8) & 0x00FF);
			result[12] = (byte)( TargetField[2] & 0x00FF);
			result[13] = (byte)((TargetField[2] >> 8) & 0x00FF);

			result[14] = (byte)(RecipMeanCurrent & 0x00FF);
			result[15] = (byte)((RecipMeanCurrent >> 8) & 0x00FF);

			result[16] = (byte)(ThresholdVolume & 0x00FF);
			result[17] = (byte)((ThresholdVolume >> 8) & 0x00FF);

			result[18] = (byte)(ThresholdTime & 0x00FF);
			result[19] = (byte)((ThresholdTime >> 8) & 0x00FF);

			result[20] = (byte)(FlowActivationThr & 0x00FF);
			result[21] = (byte)((FlowActivationThr >> 8) & 0x00FF);

			result[22] = (byte)(VolumeArrowThr & 0x00FF);
			result[23] = (byte)((VolumeArrowThr >> 8) & 0x00FF);

			result[24] = (byte)(CalibrationTime & 0x000000FF);
			result[25] = (byte)((CalibrationTime >> 8) & 0x000000FF);
			result[26] = (byte)((CalibrationTime >> 16) & 0x000000FF);
			result[27] = (byte)((CalibrationTime >> 24) & 0x000000FF);

			result[28] = (byte)(SerialNumber & 0x00000000000000FF);
			result[29] = (byte)((SerialNumber >>  8) & 0x00000000000000FF);
			result[30] = (byte)((SerialNumber >> 16) & 0x00000000000000FF);
			result[31] = (byte)((SerialNumber >> 24) & 0x00000000000000FF);
			result[32] = (byte)((SerialNumber >> 32) & 0x00000000000000FF);

			result[33] = (byte)MeterSealed;
			result[34] = CheckSum;

			return result;
		}

        /// <summary>
        /// Create a calibration structure from a complete byte array
        /// </summary>
        /// <param name="data">A complete byte array data</param>
        /// <returns>CalibrationStruct or null when byte array was not complete</returns>
        public static CalibrationStruct FromByteArray(byte[] data)
		{
			if (data.Length != Length) return null;

			CalibrationStruct result = new CalibrationStruct();

			result.Version = data[0];
			result.MeterType = (MeterType)data[1];
			result.Calibration = (UInt16)(data[2] + 256 * data[3]);
			result.VolumeUnits = (VolumeUnits)data[4];
			result.FlowArrow = (FlowArrow)data[5];
			result.FWVersion = (UInt16)(data[6] + 256 * data[7]);
			result.TargetField[0] = (UInt16)(data[8] + 256 * data[9]);
			result.TargetField[1] = (UInt16)(data[10] + 256 * data[11]);
			result.TargetField[2] = (UInt16)(data[12] + 256 * data[13]);
			result.RecipMeanCurrent = (UInt16)(data[14] + 256 * data[15]);
			result.ThresholdVolume = (UInt16)(data[16] + 256 * data[17]);
			result.ThresholdTime = (UInt16)(data[18] + 256 * data[19]);
			result.FlowActivationThr = (UInt16)(data[20] + 256 * data[21]);
			result.VolumeArrowThr = (UInt16)(data[22] + 256 * data[23]);
			result.CalibrationTime = (((UInt32)data[27] * 256 + data[26]) * 256 + data[25]) * 256 + data[24];
			result.SerialNumber = ((((UInt64)data[32] * 256 + data[31]) * 256 + data[30]) * 256 + data[29]) * 256 + data[28];
			result.MeterSealed = (MeterSealed)data[33];
			result.CheckSum = data[34];

			return result;
		}

        /// <summary>
        /// Update the calibration structure from an incomplete byte array
        /// </summary>
        /// <param name="data">Byte array data</param>
        /// <param name="offset">Offset of byte array data in CalibrationStruct</param>
        /// <returns>true when successful, false when data are not appropriate</returns>
        public bool Update(byte[] data, int offset)
        {
            if (offset == 2 && data.Length == 2)
            {
                /// Data containing iPerl calibration factor
                Calibration = (UInt16)(data[2 - offset] + 256 * data[3 - offset]);
                return true;
            }
            else if (offset == 0 && data.Length == Length)
            {
                /// Data containing a complete CalibrationStruct
                Version = data[0];
                MeterType = (MeterType)data[1];
                Calibration = (UInt16)(data[2] + 256 * data[3]);
                VolumeUnits = (VolumeUnits)data[4];
                FlowArrow = (FlowArrow)data[5];
                FWVersion = (UInt16)(data[6] + 256 * data[7]);
                TargetField[0] = (UInt16)(data[8] + 256 * data[9]);
                TargetField[1] = (UInt16)(data[10] + 256 * data[11]);
                TargetField[2] = (UInt16)(data[12] + 256 * data[13]);
                RecipMeanCurrent = (UInt16)(data[14] + 256 * data[15]);
                ThresholdVolume = (UInt16)(data[16] + 256 * data[17]);
                ThresholdTime = (UInt16)(data[18] + 256 * data[19]);
                FlowActivationThr = (UInt16)(data[20] + 256 * data[21]);
                VolumeArrowThr = (UInt16)(data[22] + 256 * data[23]);
                CalibrationTime = (((UInt32)data[27] * 256 + data[26]) * 256 + data[25]) * 256 + data[24];
                SerialNumber = ((((UInt64)data[32] * 256 + data[31]) * 256 + data[30]) * 256 + data[29]) * 256 + data[28];
                MeterSealed = (MeterSealed)data[33];
                CheckSum = data[34];
                return true;
            }
            else
                return false;
        }

		public string FWVersionStr()
		{
			int d1 = (FWVersion >> 8) & 0x000F;
			int d2 = (FWVersion >> 12) & 0x000F;
			int d3 = (FWVersion >> 4) & 0x000F;
			int d4 =  FWVersion & 0x000F;
			return string.Format("{0}.{1}{2}{3}", d1, d2, d3, d4);
		}

		public override string ToString()
		{
			return string.Format("Calibration: V{0} Type={1} Cal={2} Units={3} FlowArrow.{4} FW={5} Hi={6} Norm={7} Low={8} RMC={9} ThrVol={10} ThrTime={11} FlActThr={12} VolArrThr={13} CalTm={14} SN={15} MeterSealed={16} Chksum={17}",
									Version,
									MeterType,
									Calibration,
									VolumeUnits,
									FlowArrow,
									FWVersion,
									TargetField[0],
									TargetField[1],
									TargetField[2],
									RecipMeanCurrent,
									ThresholdVolume,
									ThresholdTime,
									FlowActivationThr,
									VolumeArrowThr,
									CalibrationTime,
									SerialNumber,
									MeterSealed,
									CheckSum.ToString("X2"));
		}
	}
}