using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Linq;
using System.Xml;
using Aitex.Core.Common;
using Aitex.Core.RT.DataCenter;
using Aitex.Core.RT.Device;
using Aitex.Core.RT.Event;
using Aitex.Core.RT.SCCore;
using Aitex.Core.Util;
using Aitex.Sorter.Common;
using MECF.Framework.Common.Equipment;
using MECF.Framework.Common.SubstrateTrackings;
using MECF.Framework.RT.EquipmentLibrary.HardwareUnits.Robot;
using Virgo_DCommon;
using Virgo_DRT.Devices;
using Virgo_DRT.Devices.YASKAWA;
using Virgo_DRT.Modules;
using System.Diagnostics;
using Aitex.Core.Common.DeviceData;

namespace Virgo_DRT.Device
{
    class EfemCommunicationBase
    {
        protected readonly AsyncSocket _socket = new AsyncSocket("");

        protected EfemCommunicationBase(string sIP)
        {
            string ip_address = sIP;
            if (SC.GetValue<bool>("System.IsSimulatorMode"))
            {
                ip_address = "127.0.0.1:13001";
            }
            _socket.Connect(ip_address);
            _socket.OnDataChanged += Hardware_OnDataChanged;
            _socket.OnErrorHappened += Hardware_OnErrorHappened;

            //if (!_socket.IsConnected)
            //{
            //    EV.PostAlarmLog(ModuleName.EFEM.ToString(), "Cannot connect to EFEM");
            //}
        }

        private void Hardware_OnDataChanged(string message)
        {
            Singleton<RouteManager>.Instance.EFEM.PostMsg(EfemEntity.MSG.RecHwMsg, message);
        }

        private void Hardware_OnErrorHappened(ErrorEventArgs args)
        {
        }

        public virtual void SendTo(string str) { }

        public virtual void SendTo(IEfemMessage yas_msg) { }
    }

    class EfemBase : BaseDevice, IDevice
    {
        // Fields
        //
        protected volatile LinkedList<ActionBase> _actions = new LinkedList<ActionBase>();
        protected EfemCommunicationBase _comm;
        protected IMessageHandler _msgHandler;

        public virtual ILoadport this[ModuleName mod]
        {
            get { throw new ApplicationException(); }
        }

        // Properties
        //
        public new ModuleName Module { get; set; }
        public OnlineFlag OnlineFlag { get; set; }
        public bool CommunicationConnected { get; protected set; }
        public DeviceState Status { get; set; }

        public bool HasActions => _actions.Any(x => x.Status == ActionStatus.Pending);

        public EfemCommunicationBase Comm => _comm;
        public IMessageHandler MsgHandler => _msgHandler;

        // Constructor
        //
        protected EfemBase(XmlElement xmlNode = null)
        {
        }

        public bool Initialize()
        {
            return true;
        }

        public void Monitor()
        {
            throw new NotImplementedException();
        }

        public void Terminate()
        {
            throw new NotImplementedException();
        }

        public void Reset()
        {
            throw new NotImplementedException();
        }

        // Methods
        //
        public void ExecuteAction()
        {
            if (!_actions.Any())
            {
                Debug.WriteLine("No Action in the EFEM Queue");
                return;
            }
            if (_actions.All(x => x.Status != ActionStatus.Pending))
            {
                Debug.Print("NO pending Action in EFEM Queue");
                return;
            }

            var nextAction = _actions.First(a => a.Status == ActionStatus.Pending);
            if (nextAction != null)
            {
                Debug.WriteLine($"{nextAction.GetType()} 开始执行");
                nextAction.Execute();
            }
        }

        public void ClearActions() { _actions?.Clear(); }

        public void AddAction(ActionBase cmd)
        {
            _actions.AddLast(cmd);
        }

        public void UpdateStatus(ushort Id, ActionStatus st)
        {
            var cur = _actions.First(x => x.ID == Id);
            if (null == cur)
                throw new ApplicationException($"NO {Id} action in the queue");

            cur.Status = st;
            if (st == ActionStatus.Completed)
            {
                cur.OnPostWork();
            }
        }

        public virtual void ReceiveMessage(string sRec) { throw new NotImplementedException(); }

        public void SetOnline(bool online)
        {
            this.OnlineFlag = online ? OnlineFlag.Online : OnlineFlag.Offline;
        }

        public virtual void SetOnline(ModuleName mod, bool online) { }

        public virtual void SetBusy(ModuleName mod, bool online) { }
    }
}

namespace Virgo_DRT.Device.YASKAWA
{
    sealed class MessageHandler : IMessageHandler
    {
        // Fields
        //
        private readonly IList<EfemMessage> _msgQueue = new List<EfemMessage>();
        private readonly EfemBase _efem;

        // Properties
        //
        public bool IsCompleted
        {
            get
            {
                if (_msgQueue.Count <= 0) return false;
                return EfemMessage.MsgHead.INF == _msgQueue[_msgQueue.Count - 1].Head;
            }
        }

        public event EventHandler<EfemActionArgs> CommandUpdated;
        public event EventHandler<EfemEventArgs> EventUpdated;
        public event EventHandler<EfemErrorArgs> ErrorOccurred;

        // Constructor
        //
        public MessageHandler(EfemBase device)
        {
            _efem = device;
        }

        public void Send(IEfemMessage msg)
        {
            _efem.Comm.SendTo(msg);

            _msgQueue.Add(msg as EfemMessage);
        }

        public void ReceiveMessage(string sRec)
        {
            string[] msgs = sRec.Split('\r');

            foreach (var msg in msgs)
            {
                if (string.IsNullOrWhiteSpace(msg)) continue;

                EfemMessage rec_msg = msg.ToMessage();

                switch (rec_msg.Head)
                {
                case EfemMessage.MsgHead.ACK:

                    _msgQueue.Add(rec_msg);

                    OnCommandUpdated(new EfemActionArgs
                    {
                        Module      = rec_msg.Port,
                        CommandType = rec_msg.Operation,
                        Status      = ActionStatus.RecACK
                    });
                    break;

                case EfemMessage.MsgHead.INF:
                    OnCommandUpdated(new EfemActionArgs
                    {
                        Module      = rec_msg.Port,
                        CommandType = rec_msg.Operation,
                        Status      = ActionStatus.RecINF
                    });

                    // 收到INF之后发送ACK确认
                    string strACK = rec_msg.RawString.Replace("INF", "ACK");

                    _efem.Comm.SendTo(strACK);

                    EfemMessage ack_msg = strACK.ToMessage();
                    ack_msg.Direct = MsgDirection.To;
                    _msgQueue.Add(ack_msg);

                    OnCommandUpdated(new EfemActionArgs
                    {
                        Module      = rec_msg.Port,
                        CommandType = rec_msg.Operation,
                        Status      = ActionStatus.Completed,
                        Data        = rec_msg.Data.Count > 0 ? rec_msg.Data.First() : string.Empty
                    });
                    break;

                case EfemMessage.MsgHead.EVT:
                    OnEventUpdated(new EfemEventArgs
                    {
                        EvtStr      = rec_msg.ToParamString(),
                        Module      = rec_msg.Port,
                        CommandType = rec_msg.Operation,
                        DataList    = rec_msg.Data
                    });
                    break;

                case EfemMessage.MsgHead.NAK:
                    OnErrorOccurred(new EfemErrorArgs
                    {
                        Factor = rec_msg.Factor,
                        Description = Constant.FactorString[rec_msg.Factor]
                    });
                    break;

                case EfemMessage.MsgHead.CAN:
                    OnErrorOccurred(new EfemErrorArgs
                    {
                        Factor = rec_msg.Factor,
                        Description = Constant.FactorString[rec_msg.Factor],
                        Message = rec_msg.Data[0]
                    });
                    break;

                case EfemMessage.MsgHead.ABS:
                    OnErrorOccurred(new EfemErrorArgs
                    {
                        Factor = rec_msg.Factor,
                        Description = $"{rec_msg.Data[0]}, {rec_msg.Data[1]}"
                    });
                    break;
                }
            }
        }

        private void OnCommandUpdated(EfemActionArgs args)
        {
            CommandUpdated?.Invoke(this, args);
        }

        private void OnEventUpdated(EfemEventArgs args)
        {
            EventUpdated?.Invoke(this, args);
        }

        private void OnErrorOccurred(EfemErrorArgs args)
        {
            ErrorOccurred?.Invoke(this, args);
        }
    }

    sealed class EfemComm : EfemCommunicationBase
    {
        public EfemComm() : base(SC.GetStringValue("EFEM.IPAddress"))
        {
        }

        public override void SendTo(string str) { _socket.Write(str + '\r'); }

        public override void SendTo(IEfemMessage msg)
        {
            if (msg is EfemMessage yas_msg)
            {
                //string str = EfemParser.Instance.TranslateBack(yas_msg);
                string str = yas_msg.ToString();
                if (string.IsNullOrEmpty(str))
                    throw new ApplicationException("Yaskawa message translation error");

                yas_msg.RawString = str;

                SendTo(str);
            }
        }
    }

    /// <summary>
    /// EFEM object class
    /// </summary>
    sealed class Efem : EfemBase, IEfem
    {
        //---------------------------------Fields----------------------------------------
        // 
        private readonly JetPM[] _pm             = new JetPM[2];
        private readonly Loadport[] _LPMs        = new Loadport[2];
        private readonly SignalTower _signalT    = new SignalTower();
        //private readonly CoolingStage[] _aligner = new CoolingStage[2];
        private string _robotMoveAction;
        private LidState _CassetteDoor;
        private LidState _SideDoor;
        private F_TRIG _bSysVacPressure1            = new F_TRIG();
        private F_TRIG _bSysCompressedAirPressure   = new F_TRIG();
        private R_TRIG _bFlowGaugeSensor            = new R_TRIG();
        private R_TRIG _bLeakageSensor              = new R_TRIG();
        private F_TRIG _bDiffPressureSensorSetting1 = new F_TRIG();
        private F_TRIG _bDiffPressureSensorSetting2 = new F_TRIG();
        private F_TRIG _bIonizerAlarm               = new F_TRIG();
        private F_TRIG _bFFuAlarm                   = new F_TRIG();
        private F_TRIG _bAreaSensor                 = new F_TRIG();
        private F_TRIG _bModeSwitch                 = new F_TRIG();
        private RD_TRIG _bCassetteDoorTrig           = new RD_TRIG();
        private RD_TRIG _bSideDoorTrig           = new RD_TRIG();


        public override ILoadport this[ModuleName mod]
        {
            get
            {
                if (!ModuleHelper.IsLoadPort(mod))
                    throw new ApplicationException($"{mod} is NOT Loadport");

                return _LPMs[mod - ModuleName.LP1];
            }
        }

        //---------------------------------Properties------------------------------------
        // 
        public LidState CassetteDoor
        {
            get => _CassetteDoor;
            set
            {
                _CassetteDoor = value;

                _bCassetteDoorTrig.CLK = _CassetteDoor == LidState.Close;
                if (_bCassetteDoorTrig.T)
                {
                    EV.PostWarningLog(Module.ToString(), "前门被打开");
                }
                if (_bCassetteDoorTrig.R)
                {
                    EV.PostInfoLog(Module.ToString(), "前门被关闭");
                }
            }
        }

        public LidState DoorSwitch
        {
            get => _SideDoor;
            set
            {
                _SideDoor = value;

                _bSideDoorTrig.CLK = _SideDoor == LidState.Close;
                if (_bSideDoorTrig.T)
                {
                    EV.PostWarningLog(Module.ToString(), "侧门被打开");
                }
                if (_bSideDoorTrig.R)
                {
                    EV.PostInfoLog(Module.ToString(), "侧门被关闭");
                }
            }
        }

        // Constructor
        //
        public Efem()
        {
            Module = ModuleName.EfemRobot;

            _pm[0] = DEVICE.GetDevice<JetPM>(ModuleName.PMA.ToString());
            _pm[1] = DEVICE.GetDevice<JetPM>(ModuleName.PMB.ToString());

            _comm = new EfemComm();

            _LPMs[0] = new Loadport(ModuleName.LP1, this);
            _LPMs[1] = new Loadport(ModuleName.LP2, this);

            _msgHandler = new MessageHandler(this);
            _msgHandler.CommandUpdated += MsgOnCommandUpdated;
            _msgHandler.EventUpdated   += MsgOnEventUpdated;
            _msgHandler.ErrorOccurred  += MsgOnErrorOccurred;

            CarrierManager.Instance.SubscribeLocation(ModuleName.LP1.ToString(), 1);
            CarrierManager.Instance.SubscribeLocation(ModuleName.LP2.ToString(), 1);

            WaferManager.Instance.SubscribeLocation(ModuleName.EfemRobot, 1);
            WaferManager.Instance.SubscribeLocation(ModuleName.Aligner1, 1);
            WaferManager.Instance.SubscribeLocation(ModuleName.Aligner2, 1);
            WaferManager.Instance.SubscribeLocation(ModuleName.LP1, 25);
            WaferManager.Instance.SubscribeLocation(ModuleName.LP2, 25);

            DATA.Subscribe("EfemRobot.RobotMoveAction", () => _robotMoveAction);
            DATA.Subscribe("LP1.WaferSize",             () => _LPMs[0].WaferSize.ToString());
            DATA.Subscribe("LP1.CassetteState",         () => _LPMs[0].HasCassette ? LoadportCassetteState.Normal : LoadportCassetteState.Absent);
            DATA.Subscribe("LP2.WaferSize",             () => _LPMs[1].WaferSize.ToString());
            DATA.Subscribe("LP2.CassetteState",         () => _LPMs[1].HasCassette ? LoadportCassetteState.Normal : LoadportCassetteState.Absent);
            DATA.Subscribe("Aligner1.WaferSize",        () => WaferManager.Instance.GetWafer(ModuleName.Aligner1, 0).Size.ToString());
            DATA.Subscribe("Aligner2.WaferSize",        () => WaferManager.Instance.GetWafer(ModuleName.Aligner2, 0).Size.ToString());
            DATA.Subscribe("EfemRobot.WaferSize",       () => WaferManager.Instance.GetWafer(ModuleName.EfemRobot, 0).Size.ToString());
            DATA.Subscribe("EFEM.CassetteDoor",         () => CassetteDoor);

            _bCassetteDoorTrig.CLK = true;
            _bSideDoorTrig.CLK = true;
        }

        // Methods
        //
        public void HomeAll()
        {
            AddAction(new HomeAllAction(this, ModuleName.EFEM));
            AddAction(new OrgshAction(this, ModuleName.EFEM));
        }

        public void Home(ModuleName mod)
        {
            AddAction(new HomeModuleAction(this, mod));
        }

        public void ClearError()
        {
            AddAction(new ClearErrorAction(this));
        }

        public void AbortRobot()
        {
            AddAction(new AbortAction(this));
        }

        public void Pick(MoveParam mp)
        {
            if (ModuleHelper.IsPm(mp.SrcModule))
            {
                JetPM pM = GetPM(mp.SrcModule);

                if (pM.IsSlitDoorClosed)
                {
                    EV.PostAlarmLog(pM.Module.ToString(), "Slit 门必须打开");
                    return;
                }

                AddAction(new PinAction(mp.SrcModule, pM, MovementPosition.Up, false));
                AddAction(new ExtendAction(this, new ExtendParam { Module = mp.SrcModule, Pos = ExtendPos.GB }));

                _robotMoveAction = string.Format($"{mp.SrcModule}.Picking");
                AddAction(new PinAction(mp.SrcModule, pM, MovementPosition.Down, true));
                AddAction(new ExtendAction(this, new ExtendParam { Module = mp.SrcModule, Pos = ExtendPos.G4 }));
            }
            else
            {
                _robotMoveAction = string.Format($"{mp.SrcModule}.Picking");
                AddAction(new PickAction(this, mp));
            }
        }

        public void Place(MoveParam mp)
        {
            if (ModuleHelper.IsPm(mp.DestModule))
            {
                JetPM pM = GetPM(mp.DestModule);

                if (pM.IsSlitDoorClosed)
                {
                    EV.PostAlarmLog(pM.Module.ToString(), "Slit 门必须打开");
                    return;
                }

                AddAction(new ExtendAction(this, new ExtendParam { Module = mp.DestModule, Pos = ExtendPos.PB }));
                _robotMoveAction = string.Format($"{mp.DestModule}.Placing");
                AddAction(new PinAction(mp.DestModule, pM, MovementPosition.Up, true));
                AddAction(new ExtendAction(this, new ExtendParam { Module = mp.DestModule, Pos = ExtendPos.P4 }));
                AddAction(new PinAction(mp.DestModule, pM, MovementPosition.Down, false));
            }
            else
            {
                _robotMoveAction = string.Format($"{mp.DestModule}.Placing");
                AddAction(new PlaceAction(this, mp));
            }
        }

        public void Extend(ExtendParam ep)
        {
            AddAction(new ExtendAction(this, ep));
        }

        public void Retract(ExtendParam ep)
        {
            AddAction(new ExtendAction(this, ep));
        }

        public void Map(ModuleName mod)
        {
            _LPMs[mod - ModuleName.LP1].Map();
        }

        public void SetPinUp(ModuleName mod)
        {
            AddAction(new LiftAction(this, mod));
        }

        public void Align(ModuleName mod, float delayTime, WaferSize size)
        {
            AddAction(new AlignAction(this, mod, size));
        }

        public void SetLamp(LightType light, LightStatus status)
        {
            //AddAction(new LedAction(this, light, status));
        }

        public void TurnOffAllLamps()
        {
            //AddAction(new LedAction(this, LightType.RED, LightStatus.OFF));
            //AddAction(new LedAction(this, LightType.YELLOW, LightStatus.OFF));
            //AddAction(new LedAction(this, LightType.GREEN, LightStatus.OFF));
            //AddAction(new LedAction(this, LightType.BUZZER1, LightStatus.OFF));
        }

        public override void ReceiveMessage(string sRec)
        {
            _msgHandler.ReceiveMessage(sRec);
        }

        public override void SetOnline(ModuleName mod, bool online)
        {
            this[mod].SetOnline(online);
        }

        public override void SetBusy(ModuleName mod, bool busy)
        {
            this[mod].Status = DeviceState.Busy;
        }

        //--------------------------------Constructor------------------------------------
        // 
        private JetPM GetPM(ModuleName mod)
        {
            if (!ModuleHelper.IsPm(mod))
                throw new ArgumentException("Module argument error");

            return _pm[mod - ModuleName.PMA];
        }

        //----------------------------------Private Method-------------------------------
        // 
        private void MsgOnEventUpdated(object sender, EventArgs e)
        {
            if (!(e is EfemEventArgs))
                return;

            EfemEventArgs eArg = e as EfemEventArgs;

            switch (eArg.CommandType)
            {
            case EfemOperation.SigStatus:
                // EVT:SIGSTAT/Parameter/DATA1/DATA2;
                string sParam = eArg.DataList[0];           // "SYSTEM" or "Pn"

                // DATA1 & DATA2
                int nData1 = Convert.ToInt32(eArg.DataList[1], 16);
                int nData2 = Convert.ToInt32(eArg.DataList[2], 16);

                BitArray baData1 = new BitArray(new int[] { nData1});
                BitArray baData2 = new BitArray(new int[] { nData2});

                if (0 == string.Compare(sParam, Constant.SYS, true))
                {
                    // EVT:SIGSTAT/System/00000000/00000004;
                    // DATA1
                    _bSysVacPressure1.CLK            = baData1[0]; //  bit 0
                    _bSysCompressedAirPressure.CLK   = baData1[2];  // bit 2
                    _bFlowGaugeSensor.CLK            = baData1[4];  // bit 4
                    _bLeakageSensor.CLK              = baData1[5];  // bit 5
                    this.DoorSwitch                  = baData1[6] ? LidState.Close : LidState.Open; // bit 6
                    //bDrivePower                    = baData1[7];  // bit 7
                    _bDiffPressureSensorSetting1.CLK = baData1[8];  // bit 8
                    _bDiffPressureSensorSetting2.CLK = baData1[9];  // bit 9
                    _bIonizerAlarm.CLK               = baData1[10];  // bit 10
                    _bFFuAlarm.CLK                   = baData1[11];  // bit 11
                    _bAreaSensor.CLK                 = baData1[12];  // bit 12
                    _bModeSwitch.CLK                 = baData1[13];  // bit 13
                    this.CassetteDoor                = baData1[15] ? LidState.Close : LidState.Open;  // bit 15

                    if (_bSysVacPressure1.Q)
                        EV.PostWarningLog(Module.ToString(), "真空报错");

                    if (_bSysCompressedAirPressure.Q)
                        EV.PostWarningLog(Module.ToString(), "压缩空气报错");

                    // DATA2
                    _signalT.ChangeLightStatus(LightType.RED,     baData2[0] ? LightStatus.ON : baData2[5] ? LightStatus.BLINK : LightStatus.OFF);
                    _signalT.ChangeLightStatus(LightType.GREEN,   baData2[1] ? LightStatus.ON : baData2[6] ? LightStatus.BLINK : LightStatus.OFF);
                    _signalT.ChangeLightStatus(LightType.YELLOW,  baData2[2] ? LightStatus.ON : baData2[7] ? LightStatus.BLINK : LightStatus.OFF);
                    _signalT.ChangeLightStatus(LightType.BLUE,    baData2[3] ? LightStatus.ON : baData2[8] ? LightStatus.BLINK : LightStatus.OFF);
                    _signalT.ChangeLightStatus(LightType.WHITE,   baData2[4] ? LightStatus.ON : baData2[9] ? LightStatus.BLINK : LightStatus.OFF);
                    _signalT.ChangeLightStatus(LightType.BUZZER1, baData2[10] ? LightStatus.ON : LightStatus.OFF);

                    /* EFEM 程序中目前没有实现
                    _RobotErr.CLK = baData2[27]; // bit 27

                    bool bArmNotExtendLLA            = baData2[30]; // bit 30
                    bool bArmNotExtendLLB            = baData2[31]; // bit 31
                    */
                } // system event
                else
                {
                    _LPMs[eArg.Module - ModuleName.LP1].HandleEvent(eArg);
                } // FOUP EVENT
                break;
            case EfemOperation.GetWaferInfo:
                _LPMs[eArg.Module - ModuleName.LP1].HandleEvent(eArg);
                break;
            default:
                break;
            }
        }

        private void MsgOnCommandUpdated(object sender, EventArgs e)
        {
            EfemActionArgs arg = e as EfemActionArgs;
            if (arg == null) throw new ArgumentNullException("Argument is Null");

            if (arg.CommandType == EfemOperation.Ready)
            {
                this.CommunicationConnected = true;
                Singleton<RouteManager>.Instance.EFEM.PostMsg(EfemEntity.MSG.CommReady);
                return;
            }

            EfemActionBase action = null;

            foreach (var item in _actions)
            {
                if (item is EfemActionBase a1)
                {
                    if (a1.Type == arg.CommandType && item.Status != ActionStatus.Completed)
                    {
                        action = a1;
                        break;
                    }
                }
            }

            if (action == null)
            {
                EV.PostAlarmLog(arg.Module.ToString(), $"NO activated {arg.CommandType} in the queue");
                throw new ApplicationException($"NO activated {arg.CommandType} in the queue");
            }

            // 更新 action 状态
            action.Status = arg.Status;

            if (arg.Status == ActionStatus.Completed)
            {
                ModuleName mod = action.Module;

                // Map 命令比较特别， module 是LPX但是用robot做mapping
                if (mod == ModuleName.EFEM || mod == ModuleName.EfemRobot || ModuleHelper.IsAligner(mod) || arg.CommandType == EfemOperation.Map)
                {
                    Singleton<RouteManager>.Instance.EFEM.PostMsg(EfemEntity.MSG.ActionDone, arg.CommandType);
                }
                else if (ModuleHelper.IsLoadPort(mod))
                {
                    Singleton<RouteManager>.Instance.EFEM.NotifyLP(mod, LoadportEntity.MSG.ActionDone);
                }

                _robotMoveAction = string.Format($"System.None");

                action.OnPostWork(arg.Data);
            }
        }

        private void MsgOnErrorOccurred(object sender, EventArgs e)
        {
            if (e is EfemErrorArgs errArg)
            {
                this.Status = DeviceState.Error;
                if (this._actions.Count > 0) this._actions.RemoveLast();
                EV.PostAlarmLog(Module.ToString(), $"{errArg.Description}, [{errArg.Message}], [{errArg.Factor}]");
            }
        }
    }

    /// <summary>
    /// Load port object class
    /// </summary>
    sealed class Loadport : ILoadport
    {
        private readonly EfemBase _efem;

        //---------------------------------Properties------------------------------------
        // 
        public OnlineFlag OnlineFlag   { get; set; }
        public ModuleName Module       { get; set; }
        public DeviceState Status      { get; set; }
        public WaferSize WaferSize     { get; set; }
        public WaferStatus[] WaferInfo { get; set; }
        public bool HasCassette        { get; set; }
        public bool Protrusion         { get; set; }
        public bool IsMapped           { get; set; }

        // Constructor
        //
        public Loadport(ModuleName mod, EfemBase efem)
        {
            Module = mod;
            _efem = efem;
        }

        // Methods
        //
        public void Home()
        {
            _efem.AddAction(new HomeAllAction(_efem, Module));
        }

        public void Map()
        {
            _efem.AddAction(new MapAction(_efem, Module));
        }

        public void HandleEvent(EfemEventArgs eArg)
        {
            switch (eArg.CommandType)
            {
            case EfemOperation.GetWaferInfo:
                string sWaferInfo = eArg.DataList[0];
                for (byte index = 0; index < sWaferInfo.Length; index++)
                {
                    WaferStatus st = (WaferStatus)int.Parse(sWaferInfo.Substring(index, 1));
                    WaferManager.Instance.CreateWafer(this.Module, index, st);

                    WaferManager.Instance.UpdateWaferSize(this.Module, index, WaferSize);

                    if (st == WaferStatus.Normal)
                    {
                        EV.PostInfoLog(this.Module.ToString(), $"Found Wafer on Slot {index+1} {WaferSize}");
                    }
                }
                this.IsMapped = true;
                break;

            case EfemOperation.SigStatus:
                // EVT: SIGSTAT/P2/00000381/00000000;

                string sParam = eArg.DataList[0];

                ModuleName mod = sParam.ToModule();
                if (!ModuleHelper.IsLoadPort(mod))
                    return;

                // DATA1 & DATA2
                int nData1 = Convert.ToInt32(eArg.DataList[1], 16);
                int nData2 = Convert.ToInt32(eArg.DataList[2], 16);

                BitArray baData1 = new BitArray(new int[] { nData1 });
                BitArray baData2 = new BitArray(new int[] { nData2 });

                // wafer size
                this.WaferSize = !baData1[6] ? WaferSize.WS3 :
                                 !baData1[7] ? WaferSize.WS4 :
                                 !baData1[8] ? WaferSize.WS6 : WaferSize.WS0;

                // placement & present
                bool bPlacement = baData1[0]; // bit 0
                bool bPresence  = !baData1[1]; // bit 1
                bool bArrived   = bPlacement && bPresence;

                if (HasCassette)
                {
                    if (!bArrived)
                    {
                        this.HasCassette = false;
                        this.IsMapped = false;
                        EV.PostInfoLog(mod.ToString(), "Cassette 拿走");
                        WaferManager.Instance.DeleteWafer(this.Module, 0, 25);
                    }
                }
                else
                {
                    if (bArrived)
                    {
                        this.HasCassette = true;
                        EV.PostInfoLog(mod.ToString(), $"Cassette {WaferSize} 放好");
                    }
                }

                this.Protrusion = !baData1[9];
                if (Protrusion)
                {
                    EV.PostWarningLog(Module.ToString(), "发现 wafer 突出");
                }

                // DATA2, loadport上面的LED 灯， 暂时不需要用到
                break;
            default:
                break;
            }
        }

        public void SetOnline(bool online)
        {
            OnlineFlag = online ? OnlineFlag.Online : OnlineFlag.Offline;
        }
    }

    sealed class SignalTower
    {
        // Fields
        //
        private readonly Dictionary<LightType, LightStatus> _lights = new Dictionary<LightType, LightStatus>(5);

        public SignalTower()
        {
            _lights.Add(LightType.RED, LightStatus.OFF);
            _lights.Add(LightType.YELLOW, LightStatus.OFF);
            _lights.Add(LightType.BLUE, LightStatus.OFF);
            _lights.Add(LightType.GREEN, LightStatus.OFF);
            _lights.Add(LightType.WHITE, LightStatus.OFF);
            _lights.Add(LightType.BUZZER1, LightStatus.OFF);

            DATA.Subscribe($"{ModuleName.EFEM}.SignalTower", () =>
            {
                return new AITSignalTowerData
                {
                    IsGreenLightOn  = _lights[LightType.GREEN] == LightStatus.ON,
                    IsRedLightOn    = _lights[LightType.RED] == LightStatus.ON,
                    IsYellowLightOn = _lights[LightType.YELLOW] == LightStatus.ON,
                    IsWhiteLightOn  = _lights[LightType.WHITE] == LightStatus.ON,
                    IsBlueLightOn   = _lights[LightType.BLUE] == LightStatus.ON,
                    IsBuzzerOn      = _lights[LightType.BUZZER1] == LightStatus.ON,
                };
            });
        }

        // Methods
        //
        public void ChangeLightStatus(LightType light, LightStatus st)
        {
            if (!_lights.ContainsKey(light))
                throw new ApplicationException($"NO {light} configured");

            _lights[light] = st;
        }
    }
}