using MathNet.Numerics.Distributions;
using MP.MONO.Core.DTO;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MachineSim
{
    /// <summary>
    /// Definizione parametri simulati
    /// </summary>
    public class Simulator
    {
        protected string basePath = "";
        protected string paramFileName = "SimParams.json";

        protected List<SimDisplayDataDTO>? currSimPar = new List<SimDisplayDataDTO>();

        public Simulator(string _basePath)
        {
            basePath = _basePath;
            setupConfig();
        }

        private void setupConfig()
        {
            string fullPath = Path.Combine(basePath, paramFileName);
            if (File.Exists(fullPath))
            {
                var rawData = File.ReadAllText(fullPath);
                if (!string.IsNullOrEmpty(rawData))
                {
                    currSimPar = JsonConvert.DeserializeObject<List<SimDisplayDataDTO>>(rawData);
                }
            }
        }

        /// <summary>
        /// Calcola prox valore simulato dati i parametri rand configurati
        /// </summary>
        /// <param name="CurrVal"></param>
        /// <param name="MinVal"></param>
        /// <param name="MaxVal"></param>
        /// <param name="sMean"></param>
        /// <param name="sStd"></param>
        /// <returns></returns>
        public double getNext(double CurrVal, double MinVal, double MaxVal, double sMean, double sStd)
        {
            double innov = Normal.Sample(sMean, sStd);
            CurrVal += innov;
            // verifico estremi...
            CurrVal = CurrVal > MaxVal ? MaxVal : CurrVal;
            CurrVal = CurrVal < MinVal ? MinVal : CurrVal;
            return CurrVal;
        }

        public List<DisplayDataDTO> MachineGetParameters()
        {
            List<DisplayDataDTO> answ = new List<DisplayDataDTO>();

            // genero a partire dall'elenco configurato da simulare...
            answ = currSimPar.Select(i => new DisplayDataDTO()
            {
                IsNumeric = i.IsNumeric,
                MaxVal = i.MaxVal,
                MinVal = i.MinVal,
                Order = i.Order,
                Title = i.Title,
                Type = i.Type,
                ValueNum = getNext(i.ValueNum, i.MinVal, i.MaxVal, i.SimMean, i.SimStd),
                DisplFormat = i.DisplFormat
                //Value = $"{getNext(i.ValueNum, i.MinVal, i.MaxVal, i.SimMean, i.SimStd):N3}",
            }).ToList();

            foreach (var item in answ)
            {
                item.Value = $"{item.ValueNum.ToString(item.DisplFormat)}";
            }

            // !!!FIXME TODO... è fake...

#if false
            var currVal = rand.NextDouble();
            DisplayDataDTO displ01 = new DisplayDataDTO()
            {
                Order = 0,
                Title = "OEE",
                ValueNum = currVal,
                IsNumeric = true,
                Value = currVal.ToString("P1"),
                Type = "OEE-75-90"
            };
            answ.Add(displ01);

            currVal = rand.NextDouble();
            DisplayDataDTO displ02 = new DisplayDataDTO()
            {
                Order = 0,
                Title = "Avail",
                ValueNum = currVal,
                IsNumeric = true,
                Value = currVal.ToString("P1"),
                Type = "AVAIL-50-80"
            };
            answ.Add(displ02);

            currVal = rand.NextDouble();
            DisplayDataDTO displ03 = new DisplayDataDTO()
            {
                Order = 0,
                Title = "Order fulfill",
                ValueNum = currVal,
                IsNumeric = true,
                Value = currVal.ToString("P1"),
                Type = "ORDER"
            };
            answ.Add(displ03);

            double minTCiclo = stdCycle * rand.NextDouble();
            TimeSpan durTCycle = TimeSpan.FromMinutes(minTCiclo);
            DisplayDataDTO displ04 = new DisplayDataDTO()
            {
                Order = 0,
                Title = "Cycle time",
                ValueNum = 0,
                IsNumeric = false,
                Value = $"{durTCycle.Hours:00}:{durTCycle.Minutes:00}:{durTCycle.Seconds:00}",
                Type = "TCycle"
            };
            answ.Add(displ04); 
#endif

#if false
            Random rand = new Random();
            int stdCycle = 5;

            double currVal = 0;
            currVal = rand.Next(10, 120) * 100;
            DisplayDataDTO displ01 = new DisplayDataDTO()
            {
                Order = 0,
                Title = "SPEED",
                ValueNum = currVal,
                IsNumeric = true,
                Value = currVal.ToString("N0"),
                Type = "SPEED-5000-10000"
            };
            answ.Add(displ01);

            currVal = rand.Next(10, 100) * 100;
            DisplayDataDTO displ02 = new DisplayDataDTO()
            {
                Order = 0,
                Title = "FEED",
                ValueNum = currVal,
                IsNumeric = true,
                Value = currVal.ToString("N0"),
                Type = "FEED-3000-5000"
            };
            answ.Add(displ02);

            currVal = rand.NextDouble() * 1.2;
            DisplayDataDTO displ03 = new DisplayDataDTO()
            {
                Order = 0,
                Title = "SPINDLE LOAD",
                ValueNum = currVal,
                IsNumeric = true,
                Value = currVal.ToString("P0"),
                Type = "LOAD"
            };
            answ.Add(displ03);

            currVal = rand.NextDouble() * 5000;
            DisplayDataDTO displ04 = new DisplayDataDTO()
            {
                Order = 0,
                Title = "X POS",
                ValueNum = currVal,
                IsNumeric = true,
                Value = currVal.ToString("N1"),
                Type = "POS"
            };
            answ.Add(displ04);

            currVal = rand.NextDouble() * 10000;
            DisplayDataDTO displ05 = new DisplayDataDTO()
            {
                Order = 0,
                Title = "Y POS",
                ValueNum = currVal,
                IsNumeric = true,
                Value = currVal.ToString("N1"),
                Type = "POS"
            };
            answ.Add(displ05);

            currVal = rand.NextDouble() * -3000;
            DisplayDataDTO displ06 = new DisplayDataDTO()
            {
                Order = 0,
                Title = "Z POS",
                ValueNum = currVal,
                IsNumeric = true,
                Value = currVal.ToString("N1"),
                Type = "POS"
            };
            answ.Add(displ06); 
#endif

            return answ;
        }
    }
}