///
/// Copyright (c) 2013-2015 Sensus Metering Systems
///
using System;
using System.Collections.Generic;
using Dirichlet.Numerics;
using log4net;

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

        readonly PumpCfg pumpCfg;

        readonly GenericDevices.IPump pump1;
        readonly GenericDevices.IPump pump2;

		readonly GenericDevices.IPumpFM pumpFm1;
		readonly GenericDevices.IPumpFM pumpFm2;

        public bool State { get { return pump1.State || pump2.State; } }
        public int Delay { get { return Math.Max(pump1.Delay, pump2.Delay); } }
        public ValveCategory Category { get { return ValveCategory.Feeding; } }     /// Pump category is Feeding
        public GenericDevices.IValve CoupledTo { get { return null; } }
        public bool InvertCouple { get { return false; } }
        public int LagOpening { get { return 0; } }
        public int LagClosing { get { return 0; } }

		/// <summary>
		/// Pump power in [%] in range 0 .. 100.0f
		/// </summary>
		public float Power
		{
			get { return (pump1.Power + pump2.Power) / 2.0f; }
		}


		readonly UInt128 mask1;
        readonly UInt128 mask2;
        public UInt128 Mask { get { return mask1 | mask2; } }			/// derived from masks of two pumps


		public Pump()
		{
		}

		public Pump(Generic.IComponentCfg cfg, IList<Generic.IComponent> components)
            : base(cfg)
		{
            pumpCfg = cfg as PumpCfg;

			pump1 = (GenericDevices.IPump)TbfComponents.FindComponent(pumpCfg.Pump1, components);
            if (pump1 == null) throw new Exception("Cannot find component Pump 1");

			pump2 = (GenericDevices.IPump)TbfComponents.FindComponent(pumpCfg.Pump2, components);
            if (pump2 == null) throw new Exception("Cannot find component Pump 2");

			pumpFm1 = pump1 as GenericDevices.IPumpFM;
			pumpFm2 = pump2 as GenericDevices.IPumpFM;

			if (pump1 is Elde.Pump.Pump) { mask1 = (pump1 as Elde.Pump.Pump).Mask; }
			else if (pump1 is Elde.PumpWithFM.Pump) { mask1 = (pump1 as Elde.PumpWithFM.Pump).Mask; }
			else if (pump1 is Danfoss.VLT2800.Pump) { mask1 = (pump1 as Danfoss.VLT2800.Pump).Mask; }
			else { mask1 = 0; }

			if (pump2 is Elde.Pump.Pump) { mask2 = (pump2 as Elde.Pump.Pump).Mask; }
			else if (pump2 is Elde.PumpWithFM.Pump) { mask2 = (pump2 as Elde.PumpWithFM.Pump).Mask; }
			else if (pump2 is Danfoss.VLT2800.Pump) { mask2 = (pump2 as Danfoss.VLT2800.Pump).Mask; }
			else { mask2 = 0; }

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


        public void TurnOn(float powerArg)
        {
			if ((pumpFm1 != null) && (pumpFm2 != null))
			{
				pumpFm1.TurnOn(powerArg);
				pumpFm2.TurnOn(powerArg);
			}
			else if ((pumpFm1 != null) && (pumpFm2 == null))
			{
				// TODO
				if (powerArg >= 50)
				{
					pumpFm1.TurnOn(2 * (powerArg - 50.0f));
					//pump2.
				}
				else
				{
					pumpFm1.TurnOn(2 * powerArg);
					//pump2.
				}
				// TODO
			}
        }

        public void TurnOff()
        {
			if ((pumpFm1 != null) && (pumpFm2 != null))
			{
				pumpFm1.TurnOff();
				pumpFm2.TurnOff();
			}
			else
			{
				// TODO
			}
        }


		/// <summary>
		/// The currently running operation.
		/// </summary>
		public enum CurrentOp
		{
			None,
			TurnOn,
			TurnOff,
		}
		/// 
		CurrentOp currentOp;

        float powerForOp;

        /// <summary>
        /// Turn the pump frequency inverter on.
        /// </summary>
        public IOperation TurnOnOp(float powerArg)
        {
            if (currentOp != CurrentOp.None) throw new Exception("Sequence error");
            currentOp = CurrentOp.TurnOn;
            powerForOp = powerArg;
            return this;
        }

		/// <summary>
		/// Turn the pump frequency inverter on.
		/// </summary>
		public IOperation TurnOffOp()
		{
			if (currentOp != CurrentOp.None) throw new Exception("Sequence error");
			currentOp = CurrentOp.TurnOff;
			return this;
		}

		/// <summary>Start the operation</summary>
		public void Start()
		{
			switch (currentOp)
			{
                case CurrentOp.TurnOn:
					TurnOn(powerForOp);
					return;
				case CurrentOp.TurnOff:
				default:
                    TurnOff();
					return;
			}
		}

		/// <summary>Run the operation</summary>
		public Event Run()
		{
			return Event.TurnPumpOnOffDone;
		}

		/// <summary>Stop the operation</summary>
		public void Stop()
		{
			currentOp = CurrentOp.None;
		}
	}
}