using Newtonsoft.Json;
using System.Diagnostics.Metrics;
using System.Threading.Channels;
using System.Timers;
using UI_SequentMicrosystems.Components;
using UI_SequentMicrosystems.Models;
using Wrapper_Api_SequentMicrosystems.RTD8TM;

namespace UI_SequentMicrosystems.Services
{
    public class RTD8TMService
    {
        private SortedList<byte, string[]> ChanelNames = new SortedList<byte, string[]>();
        private SortedList<byte, float[]> ActualValues = new SortedList<byte, float[]>();
        private SortedList<byte, byte[]> ValuesType = new SortedList<byte, byte[]>();
        private SortedList<byte, float[]> Calibrations = new SortedList<byte, float[]>();
        public SortedList<byte, List<List<RTD8TMPointModel>>> GraphData = new();
        public SortedList<byte, List<List<RTD8TMPointModel>>> GraphFiltered = new();
        private int GraphFilteredCountPoint {  get; set; }
        private byte GraphDataCounterCount = 10;
        private byte GraphDataCounter = 9;

        private string? Address {  get; set; }

        private RTD8TM _RTD8TM = new RTD8TM();
        private System.Timers.Timer _timer = new(1000); //update timer

        public delegate Task AsyncEventHandler<TEventArgs>(object? sender, TEventArgs? e);
        public event AsyncEventHandler<bool>? EventUpdateValues;
        public event AsyncEventHandler<bool>? EventUpdateGraph;

        public RTD8TMService()
        {
            _timer.AutoReset = true;
            _timer.Elapsed += TimerElapsed;
            _timer.Start();

        }

        //Main Parameters Work

        /// <summary>
        /// Set Device Address
        /// </summary>
        /// <param name="address">Address [Base url] (http://1.2.3.4)</param>
        public void SetAddress(string address)
        {
            Address = address;
            GetChanelsNames();
            GetValueTypes();
            GetCalibrations();



        }

        /// <summary>
        /// Get used device Address
        /// </summary>
        /// <returns>Address or empty string</returns>
        public string GetAddress()
        {
            if (Address == null)
            {
                return "";
            }
            else 
            { 
                return Address; 
            }
        }

        //Actual Data

        /// <summary>
        /// Read Actual values from Device
        /// </summary>
        private async void GetActualValues()
        {
            if (Address == null) { return; }

            try
            {
                ActualValues = await _RTD8TM.Get(Address);

                foreach (byte stack in ActualValues.Keys)
                {
                    if (Calibrations.ContainsKey(stack))
                    {
                        for (byte chanel = 0; chanel < 8; chanel++)
                        {
                            ActualValues[stack][chanel] += Calibrations[stack][chanel];
                        }
                    }
                }


                if (GraphDataCounter >= GraphDataCounterCount)
                {
                    GraphDataCounter = 0;

                    ReadChartData();
                }
                else
                {
                    GraphDataCounter++;
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Reading actual Data fail with message: {ex.Message}");
            }
        }

        /// <summary>
        /// Request for actual data
        /// </summary>
        /// <returns></returns>
        public SortedList<byte, float[]> GetActualData()
        {
            return ActualValues;
        }

        /// <summary>
        /// Get actual data Value
        /// </summary>
        /// <param name="stack">Stack ID</param>
        /// <param name="chanel">Chanel ID</param>
        /// <returns>Measure Resistance</returns>
        public float GetActualData(byte stack, byte chanel)
        {
            if (ActualValues.ContainsKey(stack))
            {
                return ActualValues[stack][chanel];
            }
            else
            {
                return 0;
            }
        }

        //ChanelsNames

        /// <summary>
        /// Read configured chanels Names from Device
        /// </summary>
        public async void GetChanelsNames()
        {
            if (Address == null) return;

            ChanelNames = await _RTD8TM.GetNames(Address);

            AutoUpdateChanelsName();
        }

        /// <summary>
        /// Set new Chanels Names
        /// </summary>
        /// <param name="names">chanels names sorted list</param>
            #pragma warning disable CS1998 // V této asynchronní metodě chybí operátory await a spustí se synchronně.
        public async Task SetChanelsNames()
            #pragma warning restore CS1998 // V této asynchronní metodě chybí operátory await a spustí se synchronně.
        {
            if (Address == null)
                return;

            _RTD8TM.PostNames(Address, ChanelNames);
        }

        /// <summary>
        /// Update Chanels Names for not null loading names
        /// </summary>
        private void AutoUpdateChanelsName()
        {
            if (ActualValues.Count <= 0)
                return;

            foreach (byte key in ActualValues.Keys)
            {
                if (!ChanelNames.ContainsKey(key))
                {
                    ChanelNames.Add(key, new string[8]);
                }

                for (int i = 0; i < 8; i++)
                {
                    if (ChanelNames[key][i] == null)
                    {
                        ChanelNames[key][i] = "----------";
                    }
                }
            }
        }

        /// <summary>
        /// Get chanel names
        /// </summary>
        /// <returns>Chanels names object</returns>
        public SortedList<byte, string[]> GetChanelNames()
        {
            return ChanelNames;
        }

        /// <summary>
        /// Set chanel Name
        /// </summary>
        /// <param name="stack">Stack ID</param>
        /// <param name="chanel">Chanel ID</param>
        /// <param name="name">New Name</param>
        public void SetChanelNames(byte stack, byte chanel, string name)
        {
            if (!ChanelNames.ContainsKey(stack))
            {
                ChanelNames.Add(stack, new string[8]);
            }

            ChanelNames[stack][chanel] = name;
        }

        /// <summary>
        /// Read chanel name
        /// </summary>
        /// <param name="stack">Stack ID</param>
        /// <param name="chanel">Chanel ID</param>
        /// <returns>Chanel name</returns>
        public string GetChanelName(byte stack, byte chanel)
        {
            if (ChanelNames.ContainsKey(stack))
            {
                return ChanelNames[stack][chanel];
            }
            else
            {
                return "----------";
            }
        }

        /// <summary>
        /// Clear chanels Names to default
        /// </summary>
        public void ClearChanelNames()
        {
            ChanelNames.Clear();
            AutoUpdateChanelsName();
        }

        //Timer

        private async void TimerElapsed(object? o, ElapsedEventArgs? e)
        {
            GetActualValues();
            AutoUpdateChanelsName();

            if (EventUpdateValues != null)
            {
                await EventUpdateValues.Invoke(this, true);
            }
        }

        //Graph Data

        /// <summary>
        /// Get Chart data
        /// </summary>
        public void ReadChartData()
        {
            DateTime time = DateTime.Now;

            foreach (byte stack in ActualValues.Keys)
            {
                if (!GraphData.ContainsKey(stack))
                {
                    GraphData.Add(stack, new());

                    for (int chanel = 0; chanel < 8; chanel++)
                    {
                        GraphData[stack].Add(new());
                    }
                }

                for (byte chanel = 0; chanel < 8; chanel++)
                {
                    GraphData[stack][chanel].Add(new RTD8TMPointModel() { Value = ActualValues[stack][chanel], Time = time });
                }
            }

            GetFilteredChartData();
        }

        /// <summary>
        /// Get data for graph visualize
        /// </summary>
        /// <returns>saved chart chanel Data</returns>
        public List<RTD8TMPointModel> GetChartData(byte StackID, byte Chanel)
        {
            Console.WriteLine($"RTD8TMService:GetChartData({StackID}, {Chanel}) -  start reading");

            if (!GraphFiltered.ContainsKey(StackID))
            {
                Console.WriteLine($"RTD8TMService:GetChartData({StackID}, {Chanel}) - Return new() - Unknow StackID - Stack_Keys: {JsonConvert.SerializeObject(GraphFiltered.Keys)}");
                return new List<RTD8TMPointModel>();
            }

            List<RTD8TMPointModel> RecalculatedData = new();
            byte chanelRecalcTo = GetValueType(StackID, Chanel);

            RTD8TMChanelComponent _RTD8TMChanelComponent = new RTD8TMChanelComponent();
            float LastValue = -1;
            int CountErrors = 0;

            foreach (RTD8TMPointModel point in GraphFiltered[StackID][Chanel])
            {
                RTD8TMPointModel recalculated = new() { Time = point.Time, Value = _RTD8TMChanelComponent.RecalculateValues(point.Value, chanelRecalcTo) };

                if (LastValue == -1 || CountErrors > 1 || (recalculated.Value >= (LastValue - 10) && recalculated.Value <= (LastValue + 10)))
                {
                    RecalculatedData.Add(recalculated);
                    LastValue = recalculated.Value;
                    CountErrors = 0;
                }
                else
                {
                    CountErrors++;
                }
            }

            Console.WriteLine($"RTD8TMService:GetChartData({StackID}, {Chanel})");

            return RecalculatedData;
        }

        /// <summary>
        /// Clear data from Graph
        /// </summary>
        public void ClearChart()
        {
            GraphData.Clear();
        }

        private async void GetFilteredChartData()
        {
            GraphFiltered = new SortedList<byte, List<List<RTD8TMPointModel>>>();

            foreach (byte stack in GraphData.Keys)
            {
                int pointsCount = GraphData[stack][0].Count;
                int counter = 0;

                Console.WriteLine($"RTD8TMService:GetFilteredChartData - Stack: {stack} | PointsCount: {pointsCount} | counter: {counter} | GraphData_Keys: {JsonConvert.SerializeObject(GraphData.Keys)}");

                if (pointsCount < 100) 
                {
                    GraphFiltered = GraphData;
                }
                else if (pointsCount >= 100 && pointsCount < 500) // one from five
                {
                    GraphFiltered.Add(stack, new List<List<RTD8TMPointModel>>());

                    for (int chanel = 0; chanel < 8; chanel++)
                    {
                        GraphFiltered[stack].Add(new());
                        foreach (RTD8TMPointModel GraphPoint in GraphData[stack][chanel])
                        {
                            if (counter > 3)
                            {
                                GraphFiltered[stack][chanel].Add(GraphPoint);
                                counter = 0;
                            }
                            else
                            {
                                counter++;
                            }
                        }
                    }
                }
                else if (pointsCount >= 500 && pointsCount < 1000) // one from ten
                {
                    GraphFiltered.Add(stack, new());

                    for (int chanel = 0; chanel < 8; chanel++)
                    {
                        GraphFiltered[stack].Add(new());
                        foreach (RTD8TMPointModel GraphPoint in GraphData[stack][chanel])
                        {
                            if (counter > 8)
                            {
                                GraphFiltered[stack][chanel].Add(GraphPoint);
                                counter = 0;
                            }
                            else
                            {
                                counter++;
                            }
                        }
                    }
                }
                else if (pointsCount >= 1000 && pointsCount < 1500) // one from fifteen
                {
                    GraphFiltered.Add(stack, new());

                    for (int chanel = 0; chanel < 8; chanel++)
                    {
                        GraphFiltered[stack].Add(new());
                        foreach (RTD8TMPointModel GraphPoint in GraphData[stack][chanel])
                        {
                            if (counter > 13)
                            {
                                GraphFiltered[stack][chanel].Add(GraphPoint);
                                counter = 0;
                            }
                            else
                            {
                                counter++;
                            }
                        }
                    }
                }
                else if (pointsCount >= 1500 && pointsCount < 2000) // one from twenty
                {
                    GraphFiltered.Add(stack, new());

                    for (int chanel = 0; chanel < 8; chanel++)
                    {
                        GraphFiltered[stack].Add(new());
                        foreach (RTD8TMPointModel GraphPoint in GraphData[stack][chanel])
                        {
                            if (counter > 18)
                            {
                                GraphFiltered[stack][chanel].Add(GraphPoint);
                                counter = 0;
                            }
                            else
                            {
                                counter++;
                            }
                        }
                    }
                }
                else if (pointsCount >= 2000 && pointsCount < 3500) // one from TwentyFive
                {
                    GraphFiltered.Add(stack, new());

                    for (int chanel = 0; chanel < 8; chanel++)
                    {
                        GraphFiltered[stack].Add(new());
                        foreach (RTD8TMPointModel GraphPoint in GraphData[stack][chanel])
                        {
                            if (counter > 23)
                            {
                                GraphFiltered[stack][chanel].Add(GraphPoint);
                                counter = 0;
                            }
                            else
                            {
                                counter++;
                            }
                        }
                    }
                }
                else if (pointsCount >= 3500) // one from twenty
                {
                    GraphFiltered.Add(stack, new());

                    for (int chanel = 0; chanel < 8; chanel++)
                    {
                        GraphFiltered[stack].Add(new());
                        foreach (RTD8TMPointModel GraphPoint in GraphData[stack][chanel])
                        {
                            if (counter > 28)
                            {
                                GraphFiltered[stack][chanel].Add(GraphPoint);
                                counter = 0;
                            }
                            else
                            {
                                counter++;
                            }
                        }
                    }
                }
                //případně další

            }

            if (EventUpdateGraph != null)
            {
                if (CountFilteredChartData() != GraphFilteredCountPoint)
                {
                    GraphFilteredCountPoint = CountFilteredChartData();
                    await EventUpdateGraph.Invoke(this, true);
                }
            }
            Console.WriteLine($"RTD8TMService:GetFilteredChartData - GraphFiltered_Keys: {JsonConvert.SerializeObject(GraphFiltered.Keys)}");
        }

        public int CountFilteredChartData()
        {
            foreach (byte stack in GraphFiltered.Keys)
            {
                return GraphFiltered[stack][0].Count;
            }

            return 0;
        }
        public int CountChartData()
        {
            foreach (byte stack in GraphData.Keys)
            {
                return GraphData[stack][0].Count;
            }

            return 0;
        }

        /// <summary>
        /// Get all Chart Data 
        /// </summary>
        /// <returns></returns>
        public SortedList<byte, List<List<RTD8TMPointModel>>> GetAllChartData()
        {
            return GraphData;
        }

        /// <summary>
        /// Set Chart Data (used by syncservice)
        /// </summary>
        /// <param name="data"></param>
        public void SetChartData(SortedList<byte, List<List<RTD8TMPointModel>>> data)
        {
            Console.WriteLine($"RTD8TMService:SetChartData - {JsonConvert.SerializeObject(data)}");
            GraphData = data;
        }

        //Values Types

        /// <summary>
        /// Set Value Type identifier
        /// </summary>
        /// <param name="StackID">Stack ID</param>
        /// <param name="ChanelID">Chanel ID</param>
        /// <param name="Type">Value Type</param>
        public void SetValueType(byte StackID, byte ChanelID, byte Type)
        {
            if (!ValuesType.ContainsKey(StackID))
            {
                ValuesType.Add(StackID, new byte[8]);
            }

            ValuesType[StackID][ChanelID] = Type;
        }

        /// <summary>
        /// Get Value Type
        /// </summary>
        /// <param name="StackID">Stack ID</param>
        /// <param name="ChanelID">Chanel ID</param>
        /// <returns>Value Type</returns>
        public byte GetValueType(byte StackID, byte ChanelID)
        {
            if (ValuesType.ContainsKey(StackID))
            {
                return ValuesType[StackID][ChanelID];
            }
            else
            { 
                return 0; 
            }
        }

        /// <summary>
        /// Get ValueTypes From API
        /// </summary>
        public async void GetValueTypes()
        {
            if (Address == null) { return; }

            ValuesType = await _RTD8TM.GetValueTypes(Address);
        }

        /// <summary>
        /// Post ValueTypes to API
        /// </summary>
        public void PostValueTypes()
        {
            if (Address == null) { return; }

            _RTD8TM.PostValueTypes(Address, ValuesType);
        }

        public void ClearValueTypes()
        {
            ValuesType.Clear();
        }

        //calibrations

        /// <summary>
        /// Read Calibrations from API
        /// </summary>
        private async void GetCalibrations()
        {
            if (Address == null) { return; }

            Calibrations = await _RTD8TM.GetCalibration(Address);

            foreach (byte stack in ActualValues.Keys)
            {
                if (!Calibrations.ContainsKey(stack))
                {
                    Calibrations.Add(stack, new float[8]);
                }
            }
        }

        /// <summary>
        /// Post calibrations to API
        /// </summary>
        public void PostCalibrations()
        {
            if (Address == null) { return; }

            _RTD8TM.PostCalibration(Address, Calibrations);
        }

        /// <summary>
        /// Get calibration of specific chanel
        /// </summary>
        /// <param name="stack"></param>
        /// <param name="chanel"></param>
        /// <returns></returns>
        public float GetCalibration(byte stack, byte chanel)
        {
            if (Calibrations.ContainsKey(stack))
            {
                return Calibrations[stack][chanel];
            }
            else
            {
                return 0;
            }
        }

        /// <summary>
        /// Set chanel Calibration Change
        /// </summary>
        /// <param name="stack"></param>
        /// <param name="chanel"></param>
        /// <param name="value"></param>
        public void SetCalibration(byte stack, byte chanel, float value)
        {
            if (!Calibrations.ContainsKey(stack))
            {
                Calibrations.Add(stack, new float[8]);
            }

            Calibrations[stack][chanel] = value;
        }


    }
}