using System;
using System.Collections.Generic;
using Aitex.Core.RT.Routine;
using Aitex.Core.RT.SCCore;
using Aitex.Core.Common;
using Aitex.Common.Util;
using Aitex.Core.RT.RecipeCenter;
using Venus_RT.Devices;
using MECF.Framework.Common.Equipment;
using MECF.Framework.Common.SubstrateTrackings;

using Venus_Core;
namespace Venus_RT.Modules.PMs
{
    class PMProcessRoutine : PMRoutineBase, IRoutine
    {
        private enum ProcessStep
        {
            kPreparePressure,
            kPrepareTemperature,
            kRunRecipes,
            kEnd,
        }
        public string CurrentRunningRecipe { get; set; }
        public string ProcessRecipeName { get; set; }
        public string ChuckRecipeName { get; set; }
        public string DechuckRecipeNamae { get; set; }
        public string CleanRecipeName { get; set; }
        public RecipeHead ProcessRecipeHead { get; set; }
        public DateTime RecipeStartTime { get; private set; }

        private readonly PumpDownRoutine _pumpDownRoutine;
        private readonly ProcessHelper _processHelper;
        private bool _withWafer = true;
        private bool _needPumpDown = false;
        private Recipe _currentRecipe = null;
        private int _currentStep = 0;
        private Queue<Recipe> _qeRecipes = new Queue<Recipe>();

        private double _tolerance;
        private double _OffsetTemp = 0.0f;

        private bool _bLoopMode = false;
        private int _loopStartStep = 0;
        private int _loopCounter = 0;

        private double ChillerTemp
        {
            get
            {
                if (ProcessRecipeHead != null)
                {
                    if (!string.IsNullOrEmpty(ProcessRecipeHead.ChillerTemp))
                    {
                        double setpoint = Convert.ToDouble(ProcessRecipeHead.ChillerTemp);
                        if (setpoint > 0 && setpoint < 600)
                            return setpoint;
                    }
                }

                return 0;
            }
        }
        private double BasePressure
        {
            get
            {
                if (ProcessRecipeHead != null)
                {
                    if (!string.IsNullOrEmpty(ProcessRecipeHead.BasePressure))
                    {
                        double setpoint = Convert.ToDouble(ProcessRecipeHead.BasePressure);
                        if (setpoint > 0 && setpoint < 750000)
                            return setpoint;
                    }
                }
                return SC.GetValue<int>($"{Module}.Pump.PumpBasePressure");
            }
        }
        public double EstimatedTotalLeftTime
        {
            get;
            private set;
        }

        public PMProcessRoutine(JetPM chamber, PumpDownRoutine pdRoutine) : base(chamber)
        {
            Name = "Process";
            _pumpDownRoutine = pdRoutine;
            _processHelper = new ProcessHelper(chamber);
        }

        private bool AssignFuns(Recipe recipe)
        {
            foreach(var step in recipe.Steps)
            {
                if (ProcessHelper.LoadStepFuns(step) == false)
                    return false;

                foreach(ProcessUnitBase unit in step.LstUnit)
                {
                    if (ProcessHelper.LoadMethods(unit) == false)
                    {
                        Stop($"Cannot find the process routine for unit:{unit.GetType()}");
                        return false;
                    }
                        
                }
            }

            return true;
        }

        public RState Start(params object[] objs)
        {
            if (_withWafer && WaferManager.Instance.CheckNoWafer(Module.ToString(), 0))
            {
                Stop($"can not run process, no wafer at {Module}");
                return RState.Failed;
            }

            if (!CheckSlitDoor() || !CheckDryPump() || !CheckTurboPump())
            {
                return RState.Failed;
            }

            // Load/Validate Recipe
            _qeRecipes.Clear();
            string recipeName = (string)objs[0];
            string recipeContent = RecipeFileManager.Instance.LoadRecipe(_chamber.Name, recipeName, false);
            Recipe recipe = Recipe.Load(recipeContent);
            if(recipe == null)
            {
                Stop($"Load Recipe:{recipeName} failed");
                return RState.Failed;
            }

            if (AssignFuns(recipe) == false)
            {
                Stop($"Associate process alogrithm with recipe:{recipeName} failed");
                return RState.Failed;
            }

            switch(recipe.Header.Type)
            {
                case RecipeType.Process:
                   if(recipe.Header.ChuckRecipe != null)
                    {
                        var chuckRecipe = Recipe.Load(recipe.Header.ChuckRecipe);
                        if(chuckRecipe != null)
                        {
                            ChuckRecipeName = recipe.Header.ChuckRecipe;
                            _qeRecipes.Enqueue(chuckRecipe);
                        }
                    }

                    ProcessRecipeHead = recipe.Header;
                    ProcessRecipeName = recipeName;
                    _qeRecipes.Enqueue(recipe);

                    if(recipe.Header.DechuckRecipe != null)
                    {
                        var dechuckRecipe = Recipe.Load(recipe.Header.DechuckRecipe);
                        if(dechuckRecipe != null)
                        {
                            DechuckRecipeNamae = recipe.Header.DechuckRecipe;
                            _qeRecipes.Enqueue(dechuckRecipe);
                        }
                    }

                    break;
                case RecipeType.Chuck:
                    ChuckRecipeName = recipeName;
                    _qeRecipes.Enqueue(recipe);
                    break;
                case RecipeType.DeChuck:
                    DechuckRecipeNamae = recipeName;
                    _qeRecipes.Enqueue(recipe);
                    break;
                case RecipeType.Clean:
                    CleanRecipeName = recipeName;
                    _qeRecipes.Enqueue(recipe);
                    break;
            }

            _bLoopMode = false;
            _loopStartStep = 0;
            _loopCounter = 0;

            _tolerance = SC.GetValue<double>($"System.MaxTemperatureToleranceToTarget");
            _OffsetTemp = SC.GetValue<double>($"{Module}.Chiller.ChillerTemperatureOffset");

            WaferManager.Instance.UpdateWaferProcessStatus(Module, 0, EnumWaferProcessStatus.InProcess);
            return Runner.Start(Module, Name);
        }
        public RState Monitor()
        {
            Runner.Run((int)ProcessStep.kPreparePressure,   PreparePressure,    IsPressureReady)
                .Run((int)ProcessStep.kPrepareTemperature,  PrepareTemp,        IsTempReady)
                .Run((int)ProcessStep.kRunRecipes,          StartNewRecipe,     RunRecipes)
                .End((int)ProcessStep.kEnd,                 ProcessDone,        _delay_1s);

            return Runner.Status;
        }

        private bool PreparePressure()
        {
            if(_chamber.ChamberPressure < BasePressure)
            {
                _needPumpDown = false;
                return true;
            }

            _needPumpDown = true;
            return _pumpDownRoutine.Start(BasePressure) == RState.Running;
        }

        private bool IsPressureReady()
        {
            if (_needPumpDown == false)
                return true;

            var status = _pumpDownRoutine.Monitor();
            if(status == RState.End)
            {
                return true;
            }
            else if (status == RState.Failed || status == RState.Timeout)
            {
                Runner.Stop($"Pump down to {BasePressure} failed.");
                return true;
            }

            return false;
        }

        private bool PrepareTemp()
        {
            return SetCoolantTemp(ChillerTemp, _OffsetTemp);
        }

        private bool IsTempReady()
        {
            return CheckCoolantTemp(ChillerTemp, _tolerance);
        }

        private RState StartNewStep()
        {
            var state = _currentRecipe.Steps[_currentStep].Start();
            if (state != RState.Running)
                return state;

            if (_currentRecipe.Steps[_currentStep].CycleStart)
            {
                if (!_bLoopMode)
                {
                    _bLoopMode = true;
                    _loopStartStep = _currentStep;
                    _loopCounter = _currentRecipe.Steps[_currentStep].CycleNumber;
                }
            }

            return RState.Running;
        }

        private bool StartNewRecipe()
        {
            if(_qeRecipes.Count > 0)
            {
                _currentStep = 0;
                _currentRecipe = _qeRecipes.Dequeue();
                CurrentRunningRecipe = _currentRecipe.Header.Name;

                Notify($"Recipe:{CurrentRunningRecipe} start");
                return StartNewStep() == RState.Running;
            }
            
            return false;
        }
        private bool RunRecipes()
        {
            var step = _currentRecipe.Steps[_currentStep];
            var result = step.Run();
            if(result == RState.Failed)
            {
                Runner.Stop($"Recipe:{CurrentRunningRecipe}, Step:{_currentStep + 1} Failed");
                return true;
            }
            else if(result == RState.End)
            {
                if(_currentRecipe.Steps.Count > _currentStep + 1 && _currentRecipe.Steps[_currentStep + 1].Type != StepType.OverEtch)
                    _currentRecipe.Steps[_currentStep].End();

                if(_currentRecipe.Steps[_currentStep].CycleEnd)
                {
                    if(_loopCounter > 0)
                    {
                        _loopCounter--;
                        _currentStep = _loopStartStep;
                        return StartNewStep() != RState.Running;
                    }
                    else
                    {
                        _bLoopMode = false;
                        _loopStartStep = 0;
                    }
                }

                if (_currentStep < _currentRecipe.Steps.Count - 1)
                {
                    _currentStep++;
                    return StartNewStep() != RState.Running;
                }
                else
                {
                    Notify($"Recipe:{CurrentRunningRecipe} finished");
                    return !StartNewRecipe();
                }
            }

            return false;
        }

        private bool ProcessDone()
        {
            WaferManager.Instance.UpdateWaferProcessStatus(Module, 0, EnumWaferProcessStatus.Completed);
            return true;
        }

        public void Abort()
        {
            CloseAllValves();
        }
    }
}