using System;
using System.Linq;
using System.Windows.Forms;

namespace BaseLibDataProcess
{
    public class GRR
    {
        public int Trial { get; set; } = 3;
        public int Operater { get; set; } = 3;
        public int Sample { get; set; } = 10;

        public double[] CalcRang(double[] data)
        {
            if (data.Length == Trial * Operater * Sample)
            {
                double[] ret = new double[Operater * Sample];
                for (int i = 0; i < Operater; i++)
                {
                    for (int h = 0; h < Sample; h++)
                    {
                        double[] dTemp = new double[Trial];
                        for (int j = 0; j < dTemp.Length; j++)
                        {
                            dTemp[j] = data[i*Sample*Trial+ h + j * Sample];
                        }
                        ret[i*Sample+h] = dTemp.Max() - dTemp.Min();
                    }                   
                }
                return ret;
            }
            MessageBox.Show($"数据个数{data.Length}和{Trial}*{Operater}*{Sample}不相等\r\nThe number of data is not equal to the setting", "Error");
            return null;
        }
        public double[] CalcAverage(double[] data)
        {
            if (data.Length == Trial * Operater * Sample)
            {
                double[] ret = new double[Operater * Sample];
                for (int i = 0; i < Operater; i++)
                {
                    for (int h = 0; h < Sample; h++)
                    {
                        double[] dTemp = new double[Trial];
                        for (int j = 0; j < dTemp.Length; j++)
                        {
                            dTemp[j] = data[i * Sample * Trial + h + j * Sample];
                        }
                        ret[i * Sample + h] = dTemp.Average();
                    }
                }
                return ret;
            }
            MessageBox.Show($"数据个数{data.Length}和{Trial}*{Operater}*{Sample}不相等\r\nThe number of data is not equal to the setting", "Error");
            return null;
        }
        public double CalcRbar(double[] data)
        {
            if (data.Length==Trial*Operater*Sample)
            {
                double Rbar = 0;
                for (int i = 0; i < Operater; i++)
                {
                    for (int h = 0; h < Sample; h++)
                    {
                        double[] dTemp = new double[Trial];
                        for (int j = 0; j < dTemp.Length; j++)
                        {
                            dTemp[j] = data[i * Sample * Trial + h + j * Sample];
                        }
                        Rbar += dTemp.Max() - dTemp.Min();
                    }                    
                }
                Rbar = Rbar / (Operater * Sample);
                return Rbar;
            }
            MessageBox.Show($"数据个数{data.Length}和{Trial}*{Operater}*{Sample}不相等\r\nThe number of data is not equal to the setting", "Error");
            return -1;
        }
        public double CalcUCLr(double[] data)
        {
            double ret = CalcRbar(data);
            if (ret!=-1)
            {
                switch (Trial)
                {
                    case 2:
                        ret = ret * 3.27;
                        break;
                    case 3:
                        ret = ret * 2.58;
                        break;
                }
            }           
            return ret;
        }
        public double CalcEV(double[] data)
        {
            double ret = CalcRbar(data);
            if (ret != -1)
            {
                switch (Trial)
                {
                    case 2:
                        ret = ret * 4.56;
                        break;
                    case 3:
                        ret = ret * 3.05;
                        break;
                }
            }
            return ret;
        }
        public double CalcEV(double[] data, double USL, double LSL)
        {
            double ret = CalcRbar(data);
            if (ret != -1)
            {
                switch (Trial)
                {
                    case 2:
                        ret = ret * 4.56;
                        break;
                    case 3:
                        ret = ret * 3.05;
                        break;
                }
                ret = ret * 100 / (USL - LSL);
            }
            return ret;
        }
        public double CalcXbardiff(double[] data)
        {
            if (data.Length == Trial * Operater * Sample)
            {
                double Xbar = 0;
                double[] dTemp = new double[Operater];
                for (int i = 0; i < Operater; i++)
                {
                    Xbar = 0;
                    for (int j = 0; j < Trial * Sample; j++)
                    {
                        Xbar+= data[j + i * Trial* Sample];
                    }
                    dTemp[i] = Xbar/ (Trial * Sample);
                }
                Xbar = dTemp.Max() - dTemp.Min();
                return Xbar;
            }
            MessageBox.Show($"数据个数{data.Length}和{Trial}*{Operater}*{Sample}不相等\r\nThe number of data is not equal to the setting", "Error");
            return -1;
        }
        public double CalcAV(double[] data)
        {
            double ret = CalcXbardiff(data);
            if (ret != -1)
            {
                switch (Operater)
                {
                    case 2:
                        ret = ret * 3.65;
                        break;
                    case 3:
                        ret = ret * 2.7;
                        break;
                }
                ret *= ret;
                double ev = CalcEV(data);
                ret -= (ev * ev) / (Sample * Trial);
                ret = Math.Sqrt(ret);
            }
            return ret;
        }
        public double CalcAV(double[] data, double USL, double LSL)
        {
            double ret = CalcXbardiff(data);
            if (ret != -1)
            {
                switch (Operater)
                {
                    case 2:
                        ret = ret * 3.65;
                        break;
                    case 3:
                        ret = ret * 2.7;
                        break;
                }
                ret *= ret;
                double ev = CalcEV(data);
                ret -= (ev * ev) / (Sample * Trial);
                ret = Math.Sqrt(ret);
                ret = ret * 100 / (USL - LSL);
            }
            return ret;
        }
        public double CalcGRR(double[] data ,double USL, double LSL)
        {
            double ret = -1;
            ret = Math.Sqrt(Math.Pow(CalcAV(data), 2) + Math.Pow(CalcEV(data), 2));
            ret = ret * 100 / (USL - LSL);
            return ret;
        }
        public bool CalcGRR(double[] data, double USL, double LSL,ref double UCLr,ref double EV,ref double AV,ref double RR)
        {
            UCLr = CalcUCLr(data);
            EV = CalcEV(data, USL, LSL);
            AV = CalcAV(data,USL,LSL);
            RR = CalcGRR(data, USL, LSL);
            return true;
        }        
    }

}