using System;
using System.Collections.Generic;
using System.Diagnostics;
using Venus_RT.Modules;
using MECF.Framework.Common.Communications;
using MECF.Framework.Common.Equipment;
using Venus_Core;
using Aitex.Core.RT.SCCore;
using Aitex.Core.RT.Event;
using Aitex.Core.RT.Device;
using Aitex.Core.RT.Log;

namespace Venus_RT.Devices
{
    class PendulumValve : IDevice
    {
        public enum Operation
        {
            SetPosition,
            GetPositionSP,
            Hold,
            OpenValve,
            CloseValve,
            SetPressure,
            GetPressureSP,
            GetAssembly,
            GetPosition,
            GetPressure,
            GetSensor1Data,
            GetSensor2Data,
            GetPressureCtrlStatus,
            GetDeviceStatus,
            GetWarnings,
            GetSensorOffset,
            GetSensor1Offset,
            GetSensor2Offset,
            GetLearnStatus,
            GetLearnPressureLimit,
            GetErrorStatus,
            GetFatalErrorStatus,
            GetThrottleCycleCounter,
            GetIsolationCycleCounter,
            GetPowerUpCounter,
            GetHardwareConfiguration,
            GetFirmwareConfiguration,
            GetIdentification,
            SetAccessMode,
            SetInterfaceConfiguration,
            SetValveConfiguration,
            SetSensorConfiguration,
            SetRangeConfiguration,
            SetZero,
            SetPressureAlignment,
            SetLearn,
            DownloadLearnData,
            UploadLearnData,
            SetPIDConfiguration,
            GetPIDConfiguration,
            SetValveSpeed,
            GetValveSpeed,
            Reset,
            Invalid,
        }

        private readonly Dictionary<Operation, string> _noneParaCommandOp = new Dictionary<Operation, string>
        {
            {Operation.GetPositionSP,               "i:38" },
            {Operation.Hold,                        "H:" },
            {Operation.CloseValve,                  "C:" },
            {Operation.OpenValve,                   "O:" },

            {Operation.GetPressureSP,               "i:38" },
            {Operation.GetAssembly,                 "i:76" },
            {Operation.GetPosition,                 "A:" },
            {Operation.GetPressure,                 "P:" },

            {Operation.GetSensor1Data,              "i:64" },
            {Operation.GetSensor2Data,              "i:65" },
            {Operation.GetPressureCtrlStatus,       "i:36" },
            {Operation.GetDeviceStatus,             "i:30" },

            {Operation.GetWarnings,                 "i:35" },
            {Operation.GetSensorOffset,             "i:62" },
            {Operation.GetSensor1Offset,            "i:60" },
            {Operation.GetSensor2Offset,            "i:61" },

            {Operation.GetLearnStatus,              "i:32" },
            {Operation.GetLearnPressureLimit,       "i:34" },
            {Operation.GetErrorStatus,              "i:52" },
            {Operation.GetFatalErrorStatus,         "i:50" },

            {Operation.GetThrottleCycleCounter,     "i:70" },
            {Operation.GetIsolationCycleCounter,    "i:71" },
            {Operation.GetPowerUpCounter,           "i:72" },
            {Operation.GetHardwareConfiguration,    "i:80" },

            {Operation.GetFirmwareConfiguration,    "i:82" },
            {Operation.GetIdentification,           "i:83" },
        };

        private readonly Dictionary<Operation, string> _singleParaCommandOp = new Dictionary<Operation, string>
        {
            {Operation.SetPosition,                 "R:{0:D6}" },
            {Operation.SetPressure,                 "S:{0:D8}" },

            {Operation.SetAccessMode,               "c:01{0:D2}" },
            {Operation.SetInterfaceConfiguration,   "s:20{0:D8}" },

            {Operation.SetValveConfiguration,       "s:04{0:D2}000000" },
            {Operation.SetSensorConfiguration,      "s:01{0:D8}" },

            {Operation.SetRangeConfiguration,       "s:21{0:D8}" },
            {Operation.SetPressureAlignment,        "c:6002{0:D8}" },

            {Operation.SetLearn,                    "L:{0:D8}" },
            {Operation.UploadLearnData,             "u:{0:D3}" },

            {Operation.SetPIDConfiguration,         "s:02{0:D8}" },
            {Operation.SetValveSpeed,               "V:00{0:D4}" }
        };

        private readonly Dictionary<Operation, string> _twoParaCommandOp = new Dictionary<Operation, string>
        {
            {Operation.DownloadLearnData, "d:{0:D3}{1:D8}" }
        };

        private readonly Dictionary<string, string> _deviceError = new Dictionary<string, string>
        {
            {"000001",  "Parity error" },
            {"000002",  "Input buffer overflow (to many characters) " },
            {"000003",  "Framing error (data length, number of stop bits)" },
            {"000010",  "<CR> or <LF> missing" },
            {"000011",  ": missing" },
            {"000012",  "Invalid number of characters (between : and [CR][LF])" },
            {"000020",  "Unknown command" },
            {"000021",  "Unknown command" },
            {"000022",  "Invalid value" },
            {"000023",  "Invalid value" },
            {"000030",  "Value out of range" },
            {"000041",  "Command not applicable for hardware configuration" },
            {"000060",  "ZERO disabled" },
            {"000080",  "Command not accepted due to local operation" },
            {"000082",  "Command not accepted due to synchronization, CLOSED or OPEN by digital input, safety mode or fatal error" },
        };


        public string Module { get; set; }
        public string Name { get; set; }

        public int Pressure { get; private set; }
        public int Position { get; private set; }

        public string Status { get; private set; }

        public bool IsOpen { get; private set; }

        private readonly string EOF = "\r\n";
        private readonly int _readInterval = 500;
        private int _queryFlag = 0;
        private readonly AsyncSerialPort _serial;
        private Stopwatch _queryWatch = new Stopwatch();
        private string _lastAlarmString = string.Empty;
        private Operation[] _querys = new Operation[] { Operation.GetPressure, Operation.GetPosition, Operation.GetDeviceStatus };

        public PendulumValve(ModuleName mod)
        {
            Name            = VenusDevice.PendulumValve.ToString();
            Module          = mod.ToString();
            var _PortNum    = SC.GetStringValue($"{mod}.PendulumValve.Port");
            _serial         = new AsyncSerialPort(_PortNum, 9600, 7, System.IO.Ports.Parity.Even, System.IO.Ports.StopBits.One, EOF);
            IsOpen = false;
        }

        public bool Initialize()
        {
            if (!_serial.Open())
            {
                _noRepeatAlarm("Pendulum Valve 串口无法打开");
                return false;
            }

            _serial.OnDataChanged += OnPortDataChanged;
            _serial.OnErrorHappened += OnErrorOccurred;
            _queryWatch.Restart();

            return true;
        }

        public void Monitor()
        {
            if(_queryWatch.ElapsedMilliseconds > _readInterval)
            {
                SendCommand(_querys[_queryFlag++ % 3]);
                _queryWatch.Restart();
            }
        }

        public void Reset()
        {

        }

        public void Terminate()
        {
            _serial?.Close();
        }

        private void OnErrorOccurred(string obj)
        {
            _noRepeatAlarm($"[{Module}] VAT Pendulum Valve error: [{obj}]");
        }

        private void OnPortDataChanged(string obj)
        {
            if (string.IsNullOrEmpty(obj))
            {
                _noRepeatAlarm("VAT Pendulum Valve receive empty message");
                return;
            }    

            try
            {
                var data = obj.TrimEnd().Split(':');
                switch(data[0])
                {
                    case "P":
                        {
                            int pressure;
                            if (int.TryParse(data[1], out pressure))
                                Pressure = pressure;
                        }
                        break;
                    case "A":
                        {
                            int position;
                            if (int.TryParse(data[1], out position))
                                Position = position;
                        }
                        break;
                    case "i":
                        {
                            _tryParseInqueryData(obj);
                        }
                        break;
                    case "C":
                    case "O":
                    case "H":
                    case "S":
                        break;
                    case "E":
                        {
                            _noRepeatAlarm($"[{Module}] VAT Pendulum Valve device error: {_deviceError[data[1]]}");
                        }
                        break;
                    default:
                        {
                            _noRepeatAlarm($"VAT Pendulum Valve: unrecognized received data: {obj}");
                            break;
                        }
                }
                
            }
            catch (Exception ex)
            {
                _noRepeatAlarm($"[{Module}] VAT Pendulum Valve error: [{ex.Message}], Data: {obj}");
            }
        }

        private bool SendCommand(Operation op)
        {
            if(_noneParaCommandOp.ContainsKey(op))
            {
                return _serial.Write(_noneParaCommandOp[op] + EOF);
            }
            else
            {
                return false;
            }
        }
        private bool SendCommand(Operation op, int data)
        {
            if(_singleParaCommandOp.ContainsKey(op))
            {
                var cmd = string.Format(_singleParaCommandOp[op], data) + EOF;
                return _sendCmd(cmd);
            }
            else
            {
                _noRepeatAlarm("This VAT Pendulum Valve command need 1 data");
                return false;
            }
        }

        private bool _sendCmd(string cmd)
        {
            return _serial.Write(cmd);
        }

        private void _noRepeatAlarm(string alarm)
        {
            if (_lastAlarmString != alarm)
            {
                _lastAlarmString = alarm;
                LOG.Write(eEvent.ERR_PENDULUM_VALVE, ModuleHelper.Converter(Module), alarm);
                EV.PostAlarmLog(Module, alarm);
            }
        }

        private bool _tryParseInqueryData(string data)
        {
            var cmdPrix = data.Substring(0, 4);

            Operation oper = Operation.Invalid;
            foreach( var item in _noneParaCommandOp)
            {
                if(item.Value == cmdPrix)
                {
                    oper = item.Key;
                    break;
                }
            }

            if( oper == Operation.Invalid)
            {
                return false; 
            }

            switch(oper)
            {
                case Operation.GetDeviceStatus:
                    {
                        Status = data.Substring(4, 8);
                        if(Status[1] == 'E')
                        {
                            // Fatal Error
                            _noRepeatAlarm($"Device Status error:{Status}");
                        }
                        else if(Status[3] == '1')
                        {
                            // Warning Present
                            _noRepeatAlarm($"Device Warning Present:{Status}");
                        }
                    }
                    break;
                default:
                    break;
            }

            return true;
        }

        public bool SetPosition(int postion)
        {
            if(_CheckStatus())
            {
                IsOpen = postion > 0;
                return SendCommand(Operation.SetPosition, postion);
            }

            return false;
        }

        public bool SetPressure(int pressure)
        {
            if(_CheckStatus())
            {
                IsOpen = true;
                return SendCommand(Operation.SetPressure, pressure);
            }

            return false;
        }

        public bool Hold()
        {
            return SendCommand(Operation.Hold);
        }

        public bool TurnValve(bool on)
        {
            if(_CheckStatus(on))
            {
                IsOpen = on;
                return SendCommand(on ? Operation.OpenValve : Operation.CloseValve);
            }

            return false;
        }

        bool _CheckStatus(bool bTurnOn = false)
        {
            if (Status != null && Status[1] == 'E')
            {
                _noRepeatAlarm($"PendulumValve is error status, can do turn on/off operation.");
                return false;
            }

            var _chamber = DEVICE.GetDevice<JetPM>(Module);
            if (bTurnOn && !_chamber.IsTurboPumpAtSpeed)
            {
                _noRepeatAlarm($"Turbo Pump not at speed, can not turn on pendulum valve.");
                return false;
            }

            if (_chamber.ForelinePressure > 500)
            {
                _noRepeatAlarm($"Foreline Pressure:{_chamber.ForelinePressure} is too high, can not turn on pendulum valve.");
                return false;
            }

            return true;
        }
    }
}