using Aitex.Core.RT.Routine;
using Aitex.Core.RT.SCCore;
using Venus_RT.Devices;
using MECF.Framework.Common.Equipment;
using Venus_Core;
using System.Runtime.InteropServices.WindowsRuntime;

namespace Venus_RT.Modules.TM
{
    class MFVentRoutine : ModuleRoutineBase, IRoutine
    {
        private enum VentStep
        {
            Venting,
            OpenSoftVent,
            SwitchFastVent,
            CloseVentValves,
            Delay,
            CloseExhaustValve,
            PrepareCooling,
            StartCooling,
            Cooling,
            End,

        }

        private int _ventingTimeout;
        private int _SoftVentEndPressure;
        private readonly JetTM _JetTM;
        private int _ventTimeDelay = 1;
        private bool _needCooling = false;
        private double _coolingMFCFlow = 0;
        private bool _skipRepeatVent = false;

        private int _ExhaustValveOffDelayTime = 1000;
        public MFVentRoutine(JetTM jetTM, ModuleName mod) : base(mod)
        {
            _JetTM = jetTM;
            Name = "Vent ";
        }

        public RState Start(params object[] objs)
        {

            bool isLoadLock = (ModuleHelper.IsLoadLock(Module));
            if (objs.Length > 0 && isLoadLock)
            {
                _needCooling = (bool)objs[0];
                _coolingMFCFlow = SC.GetValue<double>($"{Module}.Cooling.MFCFlow");
            }

            _skipRepeatVent = false;
            if (isLoadLock && !_needCooling && IsPressureReady())
                _skipRepeatVent = true; ;

            _JetTM.TurnSoftPumpValve(Module, false);
            _JetTM.TurnFastPumpValve(Module, false);
            _JetTM.TurnPurgeValve(Module, false);


            if (_JetTM.CheckLidClosed(Module) &&
                _JetTM.CheckPumpValveClosed(Module) &&
                _JetTM.CheckPurgeValveClosed(Module))
            {
                Reset();
                _ventingTimeout = SC.GetValue<int>($"{Module}.VentingTimeout") * 1000;
                _SoftVentEndPressure = SC.GetValue<int>($"{Module}.SoftVentEndPressure");
                _ventTimeDelay = SC.GetValue<int>($"{Module}.OverVentTime");
                _ExhaustValveOffDelayTime= SC.GetValue<int>($"{Module}.ExhaustValveOffDelayTime");
                return Runner.Start(Module, Name);
            }

            return RState.Failed;
        }

        public RState Monitor()
        {
            if (_skipRepeatVent)
            {
                Notify($" pressure: {_JetTM.GetModulePressure(Module)} is ready, skip the the venting routine.");
                CloseVentValve();
                CloseExhaustValve();
                return RState.End;
            }

            Runner.Run(VentStep.OpenSoftVent,       OpenSoftVentValve,      IsSoftVentEnd)
                  .Run(VentStep.SwitchFastVent,     SwitchFastVentValve,    IsPressureReady,    _ventingTimeout)
                  .Delay(VentStep.Delay,            _ventTimeDelay)
                  .Run(VentStep.CloseVentValves,    CloseVentValve,         _ExhaustValveOffDelayTime)
                  .RunIf(VentStep.PrepareCooling,   _needCooling,           StopVent)
                  .RunIf(VentStep.StartCooling,     _needCooling,           StartCooling,       3600000)
                  .End(VentStep.CloseExhaustValve,  CloseExhaustValve);

            return Runner.Status;
        }

        private bool OpenSoftVentValve()
        {
            _JetTM.TurnN2Valve(true);
            _JetTM.TurnPurgeValve(Module, true);

            switch (Module)
            {
                case ModuleName.LLA:
                    _JetTM.SetLLAFlow(2000);
                    break;
                case ModuleName.LLB:
                    _JetTM.SetLLBFlow(2000);
                    break;
                case ModuleName.TM:
                    _JetTM.SetTMFlow(100);

                    break;
            }



            return true;
        }


        private bool CloseExhaustValve()
        {
            _JetTM.TurnExhaustValve(Module, false);
            return true;
        }
        private bool IsSoftVentEnd()
        {
            return _JetTM.GetModulePressure(Module) > _SoftVentEndPressure;
        }
        private bool SwitchFastVentValve()
        {
            switch (Module)
            {
                case ModuleName.LLA:
                    _JetTM.SetLLAFlow(0);
                    break;
                case ModuleName.LLB:
                    _JetTM.SetLLBFlow(0);
                    break;
                case ModuleName.TM:
                    _JetTM.SetTMFlow(0);

                    break;
            }
            _JetTM.TurnPurgeValve(Module, false);
            _JetTM.TurnExhaustValve(Module, true);
            _JetTM.TurnVentValve(Module, true);

            return true;
        }

        private bool CloseVentValve()
        {
            _JetTM.TurnPurgeValve(Module, false);
            _JetTM.TurnVentValve(Module, false);

            return true;
        }

        private bool StopVent()
        {
            _JetTM.TurnVentValve(Module, false);
            _JetTM.TurnExhaustValve(Module, false);

            return true;
        }

        private bool StartCooling()
        {
            _JetTM.TurnPurgeValve(Module, true);
            _JetTM.TurnExhaustValve(Module, true);

            if (Module == ModuleName.LLA)
            {
                _JetTM.SetLLAFlow(_coolingMFCFlow);
            }
            else if (Module == ModuleName.LLB)
            {
                _JetTM.SetLLBFlow(_coolingMFCFlow);
            }

            return true;
        }

        private bool IsPressureReady()
        {
            return _JetTM.IsModuleATM(Module);
        }

        public void Abort()
        {
            CloseVentValve();

            if (_needCooling)
            {
                if (Module == ModuleName.LLA)
                {
                    _JetTM.SetLLAFlow(0);
                }
                else if (Module == ModuleName.LLB)
                {
                    _JetTM.SetLLBFlow(0);
                }
                _JetTM.TurnPurgeValve(Module, false);
                _JetTM.TurnExhaustValve(Module, false);

                Notify("Cooling done");
            }
        }
    }
}