using System;
using System.Globalization;
using System.Linq;
using System.Windows.Data;

namespace CordonelAssemblyLine.Converter
{
    public class MathConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            
            return double.Parse((string)value, CultureInfo.CurrentUICulture);
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            string format = "";
            string strValue = (string)value;
            strValue = strValue.Replace("x", "*").Replace("X", "*");
            if (strValue.ToUpper().Contains("E"))
            {

                return double.Parse(strValue, CultureInfo.InvariantCulture).ToString(format);
                //2E-07
            }
            else if (strValue.Contains("^-") && strValue.Contains("*"))
            {
                var split = strValue.Split('*');
                var mulit = double.Parse(split.First());
                var powNumber = double.Parse(split.Last().Split('^').First());
                var powBy = double.Parse(split.Last().Split('^').Last());
          

                return (mulit * Math.Pow(powNumber, powBy)).ToString(format);
                //2*10^-3
            }
            else if (strValue.Contains("-")  && strValue.Contains("*"))
            {

                var split = strValue.Split('*');
                var mulit = double.Parse(split.First());
                var powNumber = double.Parse(split.Last().Split('-').First());
                var powBy = double.Parse(split.Last().Split('-').Last());
                powBy = powBy * -1;
                return (mulit * Math.Pow(powNumber, powBy)).ToString(format);

            }
            else if (strValue.Contains("0,0"))
            {
                return double.Parse(strValue, CultureInfo.CurrentUICulture).ToString(format);
            }


            return value;

        }
    }
}