namespace TBF.BenchControl.Modbus.TankSelector
{
	public class SelectTankOp : IOperation
	{
		public enum OpSpecifier
		{
			None,
			SelectTank,
            UnselectTank,       /// tankNo is ignored, the selected tank is unselected
		}

		TankSelector tankSelector;
		OpSpecifier currentOp;
		int tankNo;

		public SelectTankOp(TankSelector tankSelector, OpSpecifier op, int tankNo)
		{
			this.tankSelector = tankSelector;
			this.currentOp = op;
            if (currentOp == OpSpecifier.SelectTank) this.tankNo = tankNo;
		}

		/// <summary>Start this operation</summary>
		public void Start()
		{
			switch (currentOp)
			{
				case OpSpecifier.SelectTank:
					tankSelector.SetOutputs((tankNo == 1) ? 1u : ((tankNo == 2) ? 2u : ((tankNo == 3) ? 4u : 0)));
					break;
				case OpSpecifier.UnselectTank:
					tankSelector.SetOutputs((tankNo == 1) ? 8u : ((tankNo == 2) ? 16u : ((tankNo == 3) ? 32u : 0)));
					break;
				default:
					break;
			}
		}

		/// <summary>Run this operation</summary>
		public Event Run()
		{
            tankSelector.SetOutputs(0);
			return Event.ConditionMet;
		}

		/// <summary>Stop this operation</summary>
		public void Stop()
		{
		}
	}
}