///
/// Copyright (c) 2015 Sensus Metering Systems
///
using System;
using System.Collections.Generic;
using log4net;
using TBF.BenchControl.GenericDevices;

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

		readonly ValveCfg valveCfg;

		public readonly ulong Mask;					/// derived from bitPosition in the constructor
													/// 
		public readonly IValve[] InputValves;

		public Valve()
		{
		}

		public Valve(ValveCfg cfg, IList<Generic.IComponent> components)
			: base(cfg)
		{
			valveCfg = cfg;

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

			if (valveCfg.BitPosition < 0 || valveCfg.BitPosition >= 64)
			{
				throw new ArgumentOutOfRangeException("position");
			}
			this.Mask = (((ulong)1) << valveCfg.BitPosition);
			
			InputValves = new IValve[valveCfg.InputValvesCount];
			InputValves[0] = TbfComponents.FindComponent(valveCfg.Input1, components) as IValve;
			InputValves[1] = TbfComponents.FindComponent(valveCfg.Input2, components) as IValve;
			if (InputValves.Length > 2)
				InputValves[2] = TbfComponents.FindComponent(valveCfg.Input3, components) as IValve;
			if (InputValves.Length > 3)
				InputValves[3] = TbfComponents.FindComponent(valveCfg.Input4, components) as IValve;
			if (InputValves.Length > 4)
				InputValves[4] = TbfComponents.FindComponent(valveCfg.Input5, components) as IValve;
			
			log.Debug(this.ToString());
		}

		public void UpdateRoute(ref ulong route)
		{
			bool output;

			if (valveCfg.LogicalOp == ValveExOperation.And)
			{
				output = true;
				foreach (var valve in InputValves)
				{
					if (valve != null) output = output && valve.State;
				}
			}
			else if (valveCfg.LogicalOp == ValveExOperation.Or)
			{
				output = false;
				foreach (var valve in InputValves)
				{
					if (valve != null) output = output || valve.State;
				}
			}
			else
				return;

			if (output != valveCfg.InvertOutput)
			{
				route = route | Mask;		/// Set the output bit to true
			}
			else
			{
				route = route & (~Mask);	/// Reset the output bit to false
			}
		}
    }
}