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

namespace AntdWpf.Converters;

public sealed class MathMultiConverter : MarkupExtension, IMultiValueConverter
{
    public MathOperation Operation { get; set; }

    public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
    {
        try
        {
            double value1 = System.Convert.ToDouble(values[0], CultureInfo.InvariantCulture);
            double value2 = System.Convert.ToDouble(values[1], CultureInfo.InvariantCulture);
            switch (Operation)
            {
                case MathOperation.Add:
                    return value1 + value2;
                case MathOperation.Divide:
                    return value1 / value2;
                case MathOperation.Multiply:
                    return value1 * value2;
                case MathOperation.Subtract:
                    return value1 - value2;
                case MathOperation.Pow:
                    return Math.Pow(value1, value2);
                default:
                    return Binding.DoNothing;
            }
        }
        catch (FormatException)
        {
            return Binding.DoNothing;
        }
    }

    public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
    {
        throw new NotImplementedException();
    }

    public override object ProvideValue(IServiceProvider serviceProvider)
    {
        return this;
    }
}