///
/// Copyright (c) 2013-2021 Sensus Slovensko a.s.
///
using System;
using System.Collections.Generic;
using Dirichlet.Numerics;
using log4net;
using Common;

namespace TBF.Rig.BuiltIn.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("{0}({1})", ClassName, Cfg.ToString(-1)); }

        readonly PumpCfg pumpCfg;

        GenericDevices.IPump pump1;
        GenericDevices.IPump pump2;

		GenericDevices.IPumpFM pumpFm1;
		GenericDevices.IPumpFM pumpFm2;

        public bool State { get { return pump1.State || pump2.State; } }

        /// Pump power in [%] in range 0 .. 100.0
        public double Power
        {
            get { return (pump1.Power + pump2.Power) / 2; }
        }

        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; } }


		UInt128 mask1;
        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;
		}

        public override void Initialize()
        {
            if (pumpCfg.DebugLevel == DebugMode.Normal)
            {
                pump1 = TbfComponents.FindComponent(pumpCfg.Pump1, StateMachine.Components) as GenericDevices.IPump;
                if (pump1 == null) throw new Exception(string.Format("Cannot find component {0}", pumpCfg.Pump1 != null ? pumpCfg.Pump1 : "<null>"));

                pump2 = TbfComponents.FindComponent(pumpCfg.Pump2, StateMachine.Components) as GenericDevices.IPump;
                if (pump2 == null) throw new Exception(string.Format("Cannot find component {0}", pumpCfg.Pump2 != null ? pumpCfg.Pump2 : "<null>"));

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

                if (pump1 is BuiltIn.Pump.Pump) { mask1 = (pump1 as BuiltIn.Pump.Pump).Mask; }
                else if (pump1 is Danfoss.VLT2800.Pump) { mask1 = (pump1 as Danfoss.VLT2800.Pump).Mask; }
                else if (pump1 is Modbus.PumpFM.DanfossVLT.Pump) { mask1 = (pump1 as Modbus.PumpFM.DanfossVLT.Pump).Mask; }
                else { mask1 = 0; }

                if (pump2 is BuiltIn.Pump.Pump) { mask2 = (pump2 as BuiltIn.Pump.Pump).Mask; }
                else if (pump2 is Danfoss.VLT2800.Pump) { mask2 = (pump2 as Danfoss.VLT2800.Pump).Mask; }
                else if (pump2 is Modbus.PumpFM.DanfossVLT.Pump) { mask2 = (pump2 as Modbus.PumpFM.DanfossVLT.Pump).Mask; }
                else { mask2 = 0; }

                log.FatalFormat("{0} initialized: {1}", Name, this);
            }
            else
            {
                log.FatalFormat("{0} simulated: {1}", Name, this);
            }
        }


        public void TurnOn(double 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 - 50.0));
					//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;

        double powerForOp;

        /// <summary>
        /// Turn the pump frequency inverter on.
        /// </summary>
        public IOperation TurnOnOp(double 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;
		}
	}
}