using System;
using System.ComponentModel;
using System.Globalization;
using System.Windows.Data;

namespace TeamAAS.Feeder.UI
{
    /// <summary>
    /// 枚举值 → 其 [Description] 特性文本（无特性则用枚举名）。
    /// 库内自带副本：主程序的 TeamAAS.Converters.EnumDescriptionConverter 在 exe 程序集，硬件库无法反向引用。
    /// </summary>
    public class EnumDescriptionConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value == null) return string.Empty;
            var type = value.GetType();
            var name = Enum.GetName(type, value);
            if (name == null) return value.ToString();
            var fi = type.GetField(name);
            var attr = fi != null
                ? (DescriptionAttribute)Attribute.GetCustomAttribute(fi, typeof(DescriptionAttribute))
                : null;
            return attr != null ? attr.Description : name;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotSupportedException();
        }
    }
}