using FluentTerminal.Models.Enums;
using System;
using System.ComponentModel;
using Windows.UI.Xaml.Data;

namespace FluentTerminal.App.Converters
{
    public class IntToExtendedVirtualKeyConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, string language)
        {
            if (value is int intValue)
            {
                return GetEnumDescription((ExtendedVirtualKey)intValue);
            }
            return null;
        }

        public object ConvertBack(object value, Type targetType, object parameter, string language)
        {
            throw new NotImplementedException();
        }

        private static string GetEnumDescription(Enum value)
        {
            var fieldInfo = value.GetType().GetField(value.ToString());

            if (fieldInfo == null)
            {
                return value.ToString();
            }

            var attributes = (DescriptionAttribute[])fieldInfo.GetCustomAttributes(typeof(DescriptionAttribute), false);

            if (attributes?.Length > 0)
            {
                return attributes[0].Description;
            }

            return value.ToString();
        }
    }
}