using System;
using System.Globalization;
using System.Windows.Data;
using System.Windows.Media;

namespace TeamAAS.Logging.Controls
{
    /// <summary>
    /// 日志类别 → 前景色画刷转换器（颜色与流程节点状态色保持一致）。
    /// Info=蓝、Warning=橙、Error=红。
    /// </summary>
    public class LogLevelBrushConverter : IValueConverter
    {
        private static readonly Brush InfoBrush = Freeze("#2D6CDF");
        private static readonly Brush WarningBrush = Freeze("#FF9800");
        private static readonly Brush ErrorBrush = Freeze("#F44336");

        private static Brush Freeze(string hex)
        {
            var brush = new SolidColorBrush((Color)ColorConverter.ConvertFromString(hex));
            brush.Freeze();
            return brush;
        }

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value is LogLevel category)
            {
                switch (category)
                {
                    case LogLevel.Warning: return WarningBrush;
                    case LogLevel.Error: return ErrorBrush;
                    default: return InfoBrush;
                }
            }
            return InfoBrush;
        }

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