///
/// Copyright (c) 2015 Sensus Metering Systems
/// Author: Milan Hanajík
///
using System;

namespace TBF.BenchControl.WaterMeters.iPerl
{
	public class StatusStruct
	{
		public static readonly int Length = 48;

		public Byte Version;
		public FlowState FlowState;
		public UInt32 BillingVolume;
		public UInt32 ForwardVolume;
		public UInt32 ReverseVolume;
		public UInt32 SecondsActive;
		public UInt32 SecondsIdle;
		public UInt32 SecondsUsed;
		public UInt32 UTC;
		public Int32  ScaledAvgFlowRate;
		public UInt16 PeakFlowRate;
		public UInt16 AlarmState;
		public byte RebootCount;
		public byte[] AlarmCount;
		public UInt16 FlipTime;


		public StatusStruct()
		{
			AlarmCount = new byte[7];
		}

		public byte[] ToByteArray()
		{
			byte[] result = new byte[Length];
			
			result[0] = Version;
			result[1] = (byte)FlowState;

			result[2] = (byte)(BillingVolume & 0x000000FF);
			result[3] = (byte)((BillingVolume >> 8) & 0x000000FF);
			result[4] = (byte)((BillingVolume >> 16) & 0x000000FF);
			result[5] = (byte)((BillingVolume >> 24) & 0x000000FF);

			result[6] = (byte)(ForwardVolume & 0x000000FF);
			result[7] = (byte)((ForwardVolume >> 8) & 0x000000FF);
			result[8] = (byte)((ForwardVolume >> 16) & 0x000000FF);
			result[9] = (byte)((ForwardVolume >> 24) & 0x000000FF);

			result[10] = (byte)(ReverseVolume & 0x000000FF);
			result[11] = (byte)((ReverseVolume >> 8) & 0x000000FF);
			result[12] = (byte)((ReverseVolume >> 16) & 0x000000FF);
			result[13] = (byte)((ReverseVolume >> 24) & 0x000000FF);

			result[14] = (byte)(SecondsActive & 0x000000FF);
			result[15] = (byte)((SecondsActive >> 8) & 0x000000FF);
			result[16] = (byte)((SecondsActive >> 16) & 0x000000FF);
			result[17] = (byte)((SecondsActive >> 24) & 0x000000FF);

			result[18] = (byte)(SecondsIdle & 0x000000FF);
			result[19] = (byte)((SecondsIdle >> 8) & 0x000000FF);
			result[20] = (byte)((SecondsIdle >> 16) & 0x000000FF);
			result[21] = (byte)((SecondsIdle >> 24) & 0x000000FF);

			result[22] = (byte)(SecondsUsed & 0x000000FF);
			result[23] = (byte)((SecondsUsed >> 8) & 0x000000FF);
			result[24] = (byte)((SecondsUsed >> 16) & 0x000000FF);
			result[25] = (byte)((SecondsUsed >> 24) & 0x000000FF);

			result[26] = (byte)(UTC & 0x000000FF);
			result[27] = (byte)((UTC >> 8) & 0x000000FF);
			result[28] = (byte)((UTC >> 16) & 0x000000FF);
			result[29] = (byte)((UTC >> 24) & 0x000000FF);

			result[30] = (byte)(ScaledAvgFlowRate & 0x000000FF);
			result[31] = (byte)((ScaledAvgFlowRate >> 8) & 0x000000FF);
			result[32] = (byte)((ScaledAvgFlowRate >> 16) & 0x000000FF);
			result[33] = (byte)((ScaledAvgFlowRate >> 24) & 0x000000FF);		/// TODO: test with negative value

			result[34] = (byte)(PeakFlowRate & 0x00FF);
			result[35] = (byte)((PeakFlowRate >> 8) & 0x00FF);

			result[36] = (byte)(AlarmState & 0x00FF);
			result[37] = (byte)((AlarmState >> 8) & 0x00FF);

			result[38] = RebootCount;

			result[39] = AlarmCount[0];
			result[40] = AlarmCount[1];
			result[41] = AlarmCount[2];
			result[42] = AlarmCount[3];
			result[43] = AlarmCount[4];
			result[44] = AlarmCount[5];
			result[45] = AlarmCount[6];

			result[46] = (byte)(FlipTime & 0x00FF);
			result[47] = (byte)((FlipTime >> 8) & 0x00FF);

			return result;
		}

		public static StatusStruct FromByteArray(byte[] data)
		{
			if (data.Length != Length) return null;

			StatusStruct result = new StatusStruct();

			result.Version = data[0];
			result.FlowState = (FlowState)data[1];
			result.BillingVolume = (((UInt32)data[5] * 256 + data[4]) * 256 + data[3]) * 256 + data[2];
			result.ForwardVolume = (((UInt32)data[9] * 256 + data[8]) * 256 + data[7]) * 256 + data[6];
			result.ReverseVolume = (((UInt32)data[13] * 256 + data[12]) * 256 + data[11]) * 256 + data[10];
			result.SecondsActive = (((UInt32)data[17] * 256 + data[16]) * 256 + data[15]) * 256 + data[14];
			result.SecondsIdle = (((UInt32)data[21] * 256 + data[20]) * 256 + data[19]) * 256 + data[18];
			result.SecondsUsed = (((UInt32)data[25] * 256 + data[24]) * 256 + data[23]) * 256 + data[22];
			result.UTC = (((UInt32)data[29] * 256 + data[28]) * 256 + data[27]) * 256 + data[26];
			result.ScaledAvgFlowRate = (((Int32)data[33] * 256 + data[32]) * 256 + data[31]) * 256 + data[30];	/// TODO: test with negative value
			result.PeakFlowRate = (UInt16)(data[34] + 256 * data[35]);
			result.AlarmState = (UInt16)(data[36] + 256 * data[37]);
			result.RebootCount = data[38];
			result.AlarmCount[0] = data[39];
			result.AlarmCount[1] = data[40];
			result.AlarmCount[2] = data[41];
			result.AlarmCount[3] = data[42];
			result.AlarmCount[4] = data[43];
			result.AlarmCount[5] = data[44];
			result.AlarmCount[6] = data[45];
			result.FlipTime = (UInt16)(data[46] * 256 + data[47]);

			return result;
		}

		public override string ToString()
		{
			return string.Format("Status: V{0} Flow={1} BillVol={2} ForwVol={3} RevVol={4} SecActive={5}s SecIdle={6}s SecUsed={7}s UTC={8} AvgFlowRate={9} PeekFlowRate={10} AlarmState={11} RebootCount={12} A0={13} A1={14} A2={15} A3={16} A4={17} A5={18} A6={19} FlipTime={20}",
									Version,
									FlowState,
									BillingVolume,
									ForwardVolume,
									ReverseVolume,
									SecondsActive,
									SecondsIdle,
									SecondsUsed,
									UTC,
									ScaledAvgFlowRate,
									PeakFlowRate,
									AlarmState,
									RebootCount,
									AlarmCount[0],
									AlarmCount[1],
									AlarmCount[2],
									AlarmCount[3],
									AlarmCount[4],
									AlarmCount[5],
									AlarmCount[6],
									FlipTime);
		}
	}
}