using System;
using System.Xml;
using Aitex.Core.Common.DeviceData;
using Aitex.Core.RT.DataCenter;
using Aitex.Core.RT.Event;
using Aitex.Core.RT.IOCore;
using Aitex.Core.RT.Log;
using Aitex.Core.RT.OperationCenter;
using Aitex.Core.Util;

namespace Aitex.Core.RT.Device.Unit
{
    public class IoCylinder : BaseDevice, IDevice
    {
        private DIAccessor _diON;
        private DIAccessor _diOFF;

        private DOAccessor _doON;
        private DOAccessor _doOFF;

        private CylinderState _operation;
        private DeviceTimer _timer = new DeviceTimer();
        private R_TRIG _trigReset = new R_TRIG();
        private R_TRIG _trigError = new R_TRIG();

        public bool EnableOpen { get; set; }
        public bool EnableClose { get; set; }

        public int SetPoint
        {
            get
            {
                if (_doON.Value && _doOFF.Value) return (int)CylinderState.Error;
                if (_doON.Value && !_doOFF.Value) return (int)CylinderState.Open;
                if (!_doON.Value && _doOFF.Value) return (int)CylinderState.Close;
                if (!_doON.Value && !_doOFF.Value) return (int)CylinderState.Unknown;

                return (int)CylinderState.Unknown;
            }
        }

        public CylinderState State
        {
            get
            {
                if (_diON != null && _diOFF != null)
                {
                    if (ONFeedback && _diOFF.Value)
                        return CylinderState.Error;

                    if (ONFeedback && !_diOFF.Value)
                        return CylinderState.Open;
                    if (!ONFeedback && _diOFF.Value)
                        return CylinderState.Close;
                    if (!ONFeedback && !_diOFF.Value)
                        return CylinderState.Unknown;
                }
                return CylinderState.Unknown;
            }
        }

        public bool ONFeedback
        {
            get { return _diON != null && _diON.Value; }
        }
        public bool OFFFeedback
        {
            get { return _diOFF != null && _diOFF.Value; }
        }
        public bool ONSetPoint
        {
            get
            {
                return _doON != null && _doON.Value;
            }
            set
            {
                if (_doON != null && _doON.Check(value, out _))
                    _doON.Value = value;
            }
        }
        public bool OFFSetPoint
        {
            get
            {
                return _doOFF != null && _doOFF.Value;
            }
            set
            {
                if (_doOFF != null && _doOFF.Check(value, out _))
                    _doOFF.Value = value;
            }
        }

        private AITCylinderData DeviceData
        {
            get
            {
                AITCylinderData deviceData = new AITCylinderData
                {
                    Module = Module,
                    DeviceName = Name,
                    DeviceSchematicId = DeviceID,
                    DisplayName = Display,

                    OpenFeedback = ONFeedback,
                    CloseFeedback = OFFFeedback,
                    OpenSetPoint = ONSetPoint,
                    CloseSetPoint = OFFSetPoint
                };

                return deviceData;
            }
        }

        //public int Status
        //{
        //    get
        //    {
        //        if (OpenFeedback && _diClosed.Value)
        //            return (int)CylinderState.Error;
        //        if (OpenFeedback && !_diClosed.Value)
        //            return (int)CylinderState.Open;
        //        if (!OpenFeedback && _diClosed.Value)
        //            return (int)CylinderState.Close;
        //        if (!OpenFeedback && !_diClosed.Value)
        //            return (int)CylinderState.Unknown;

        //        return (int)CylinderState.Unknown;
        //    }
        //}

        public IoCylinder(string module, XmlElement node, string ioModule = "")
        {
            base.Module = module;
            base.Name = node.GetAttribute("id");
            base.Display = node.GetAttribute("display");
            base.DeviceID = node.GetAttribute("schematicId");

            _diON = ParseDiNode("diON", node, ioModule);
            _diOFF = ParseDiNode("diOFF", node, ioModule);
            _doON = ParseDoNode("doON", node, ioModule);
            _doOFF = ParseDoNode("doOFF", node, ioModule);
        }

        public bool Initialize()
        {
            DATA.Subscribe($"{Module}.{Name}.DeviceData", () => DeviceData);

            OP.Subscribe($"{Module}.{Name}.{AITCylinderOperation.Open}", InvokeOpenCylinder);
            OP.Subscribe($"{Module}.{Name}.{AITCylinderOperation.Close}", InvokeCloseCylinder);

            DEVICE.Register($"{Module}.{Name}.{AITCylinderOperation.Open}", (out string reason, int time, object[] param) =>
            {
                bool ret = SetCylinder(true, out reason);
                if (ret)
                {
                    reason = string.Format("Open Cylinder {0}", Name);
                    return true;
                }

                return false;
            });

            DEVICE.Register($"{Module}.{Name}.{AITCylinderOperation.Close}", (out string reason, int time, object[] param) =>
            {
                bool ret = SetCylinder(false, out reason);
                if (ret)
                {
                    reason = string.Format("Close Cylinder {0}", Name);
                    return true;
                }

                return false;
            });

            return true;
        }

        private bool InvokeOpenCylinder(string arg1, object[] arg2)
        {
            string reason;

            if (!SetCylinder(true, out reason))
            {
                EV.PostWarningLog(Module, $"Can not open cylinder {Module}.{Name}, {reason}");
                return false;
            }

            EV.PostInfoLog(Module, $"Open cylinder {Module}.{Name}");

            return true;
        }

        private bool InvokeCloseCylinder(string arg1, object[] arg2)
        {
            string reason;

            if (!SetCylinder(false, out reason))
            {
                EV.PostWarningLog(Module, $"Can not close cylinder {Module}.{Name}, {reason}");
                return false;
            }

            EV.PostInfoLog(Module, $"Close cylinder {Module}.{Name}");

            return true;
        }

        public void Terminate()
        {
            OFFSetPoint = false;
            ONSetPoint = false;
        }

        public bool SetCylinder(bool isOpen, out string reason)
        {
            reason = "";

            ONSetPoint = isOpen;
            OFFSetPoint = !isOpen;

            _operation = isOpen ? CylinderState.Open : CylinderState.Close;
            _timer.Start(1000 * 60 * 3);

            return true;
        }

        public void Monitor()
        {
            try
            {
                if (_timer.IsTimeout())
                {
                    _timer.Stop();

                    if (State != _operation)
                    {
                        if (_operation == CylinderState.Open)
                        {
                            string reason;
                            if (!_doON.Check(true, out reason))
                                EV.PostMessage(Module, EventEnum.DefaultAlarm, "Open Cylinder Failed for interlock, " + reason);
                            else
                                EV.PostMessage(Module, EventEnum.DefaultAlarm, "Cylinder hold close status");
                        }
                        else
                        {
                            string reason;
                            if (!_doON.Check(false, out reason))
                                EV.PostMessage(Module, EventEnum.DefaultAlarm, "Close Cylinder Failed for interlock, " + reason);
                            else
                                EV.PostMessage(Module, EventEnum.DefaultAlarm, "Cylinder hold open status");
                        }
                    }
                    _operation = (CylinderState)SetPoint;
                }
                else if (_timer.IsIdle())
                {
                    _trigReset.CLK = SetPoint != (int)_operation;   // fire event only check at first, SetPoint set by interlock
                    if (_trigReset.Q)
                    {
                        if (_operation == CylinderState.Open)
                        {
                            string reason;
                            if (!_doON.Check(true, out reason))
                                EV.PostMessage(Module, EventEnum.SwInterlock, Module, string.Format("Cylinder {0} was {1}，Reason：{2}", Display, "Close", reason));
                            else
                                EV.PostMessage(Module, EventEnum.SwInterlock, Module, string.Format("Cylinder {0} was {1}，Reason {2}", Display, "Close", "PLC kept"));
                        }
                        else
                        {
                            string reason;
                            if (!_doON.Check(false, out reason))
                                EV.PostMessage(Module, EventEnum.SwInterlock, Module, string.Format("Cylinder {0} was {1}，Reason：{2}", Display, "Open", reason));
                            else
                                EV.PostMessage(Module, EventEnum.SwInterlock, Module, string.Format("Cylinder {0} was {1}，Reason {2}", Display, "Open", "PLC Kept"));
                        }
                        _operation = (CylinderState)SetPoint;
                    }
                }

                _trigError.CLK = State == CylinderState.Error;
                if (_trigError.Q)
                {
                    EV.PostMessage(Module, EventEnum.DefaultAlarm, "Cylinder in error status");
                }

                if ((SetPoint == (int)State) && (SetPoint == (int)CylinderState.Open || SetPoint == (int)CylinderState.Close))
                {
                    OFFSetPoint = false;
                    ONSetPoint = false;
                }
            }
            catch (Exception ex)
            {
                LOG.Write(ex);
            }
        }

        public void Reset()
        {
            _trigReset.RST = true;
            _trigError.RST = true;
        }
    }
}