///
/// Copyright (c) 2013-2016 Sensus Metering Systems
///
using System;
using System.Collections.Generic;
using log4net;
using Dirichlet.Numerics;
using TBF.BenchControl.Generic;

namespace TBF.BenchControl.Elde.Diverter
{
	public class Diverter : ComponentBase, IDevice, GenericDevices.IDiverter
	{
		private static readonly ILog log = LogManager.GetLogger(typeof(Diverter));
        public override string ToString() { return string.Format("Diverter({0})", Cfg.ToString(1)); }


		/// <summary>
		/// Enumeration of balances via static fields and methods
		/// </summary>
		static int nextIdx = 0;
		public static new void ResetStaticProperties()
		{
			nextIdx = 0;
		}
		public static int DivertersCount { get { return nextIdx; } }
		public static GenericDevices.IDiverter[] Diverters;
		public static int[] DivStartingLevelPct;
		public static int[] DivStoppingLevelPct;
											
		protected int diverterNr;					/// 0-based diverter number



		readonly DiverterCfg diverterCfg;
		readonly ControlBoardDev controlBoard;
        readonly UInt128 mask;		    	/// derived from bitPosition in the constructor
        public int AdcNr { get { return diverterCfg.AdcNr; } }

        public bool State
        {
            get { return (controlBoard.Route & mask) != 0; }
        }

		public Diverter()
		{
		}

		public Diverter(Generic.IComponentCfg cfg, IList<Generic.IComponent> components)
			: base(cfg)
		{
			diverterCfg = cfg as DiverterCfg;

			controlBoard = (ControlBoardDev)TbfComponents.FindComponent(cfg.ParentName, components);
			if (controlBoard == null) throw new Exception("Cannot find " + Name + " parent");

			if (diverterCfg.BitPosition < 0 || diverterCfg.BitPosition >= 64) throw new ArgumentOutOfRangeException("position");
            this.mask = (((UInt128)1) << diverterCfg.BitPosition);



			diverterNr = nextIdx++;
			///
			if (Diverters == null || Diverters.Length < nextIdx)
			{
				GenericDevices.IDiverter[] divertersSoFar = Diverters;
				int[] startingLevelsSoFar = DivStartingLevelPct;
				int[] stoppingLevelsSoFar = DivStoppingLevelPct;

				Diverters = new GenericDevices.IDiverter[nextIdx];
				DivStartingLevelPct = new int[nextIdx];
				DivStoppingLevelPct = new int[nextIdx];

				if (divertersSoFar != null)
				{
					for (int i = 0; i < divertersSoFar.Length; i++)
					{
						Diverters[i] = divertersSoFar[i];
						DivStartingLevelPct[i] = startingLevelsSoFar[i];
						DivStoppingLevelPct[i] = stoppingLevelsSoFar[i];
					}
				}

				Diverters[nextIdx - 1] = this;
				DivStartingLevelPct[nextIdx - 1] = diverterCfg.StartingLevel;
				DivStoppingLevelPct[nextIdx - 1] = diverterCfg.StoppingLevel;
			}

			/// Prepare arguments of SendCalibData()
			if (diverterCfg.AdcNr >= 0 && diverterCfg.AdcNr < controlBoard.RegValveCalib.GetLength(0))
			{
				controlBoard.RegValveCalib[diverterCfg.AdcNr, 0] = (uint)diverterCfg.AdcValueToSink;
				controlBoard.RegValveCalib[diverterCfg.AdcNr, 1] = (uint)diverterCfg.AdcValueToTank;
			}
			else
			{
				log.ErrorFormat("Unable to set {0} ADC levels: RegValveCalib array size={1}, diverter AdcNr={2}",
								Name, controlBoard.RegValveCalib.GetLength(0), diverterCfg.AdcNr);
			}

			log.Debug(this.ToString());
		}


		///
		/// IDevice interface implementation
		///
		public void Initialize() { }
		public void RunDeviceBefore()
		{
			int adc = (int)StateMachine.ControlBoard.AnalogInputRaw(diverterCfg.AdcNr, 0);
			Handlers.OnAdcChanged(this, new CmdResponseArgs(CfgChangeCmd.GetAdc, diverterCfg.BitPosition, adc));
		}
		public void RunDeviceAfter() { }
		public void StopDevice() { }


		#region Configuration Change Handling

		public static void OnCfgChange(object sender, CfgChangeArgs args)
		{
			if (CfgChangeHandler == null) return;
			try { CfgChangeHandler(sender, args); }
			catch (Exception e) { log.Error("CfgChangeHandler(...) failed", e); }
		}

		public static event EventHandler<CfgChangeArgs> CfgChangeHandler;

		public override void StartChangeHandler()
		{
			CfgChangeHandler += delegate(object sender, CfgChangeArgs args)
			{
				DiverterCfg tmpcfg = args.Cfg as DiverterCfg;
				if (tmpcfg != null && tmpcfg.Name.Equals(Name))
				{
					if (args.Command == CfgChangeCmd.CfgChange)
					{
					}
					else if (args.Command == CfgChangeCmd.GetAdc1 || args.Command == CfgChangeCmd.GetAdc2)
					{
						int adc = (int)controlBoard.AnalogInputRaw(diverterCfg.AdcNr, 0);
						// TOTEST
						DiverterCfgCtrl.OnCmdResponse(this, new CmdResponseArgs(args.Command, diverterCfg.BitPosition, adc));
					}
					else if (args.Command == CfgChangeCmd.DivToTank)
					{
						if (Name.Contains("1"))		/// TODO: Put flowmeter# into config
						{
							controlBoard.DiverterToTank(1);
						}
						else
						{
							controlBoard.DiverterToTank(3);
						}
					}
					else if (args.Command == CfgChangeCmd.DivToSink)
					{
						if (Name.Contains("1"))		/// TODO: Put flowmeter# into config
						{
							controlBoard.DiverterToSink(1);
						}
						else
						{
							controlBoard.DiverterToSink(3);
						}
					}
					else if (args.Command == CfgChangeCmd.ReadDivTransition)
					{
						if (Name.Contains("1"))		/// TODO: Put flowmeter# into config
						{
							controlBoard.ReadDiverterTransition(1);
						}
						else
						{
							controlBoard.ReadDiverterTransition(3);
						}
					}
				}
			};
		}

		#endregion Configuration Change Handling
	}
}