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

namespace XP.Hardware.PLC.Sentry.Converters
{
    /// <summary>
    /// 连接状态文本到指示灯颜色转换器 | Connection status text to indicator color converter
    /// 已连接→绿色，重连中→黄色，其他→灰色 | Connected→Green, Reconnecting→Yellow, Others→Gray
    /// </summary>
    public class ConnectionStatusToColorConverter : IMultiValueConverter
    {
        /// <summary>
        /// 已连接颜色（绿色）| Connected color (green)
        /// </summary>
        private static readonly SolidColorBrush ConnectedBrush = new(Color.FromRgb(0x4C, 0xAF, 0x50));

        /// <summary>
        /// 重连中颜色（黄色）| Reconnecting color (yellow)
        /// </summary>
        private static readonly SolidColorBrush ReconnectingBrush = new(Color.FromRgb(0xFF, 0xC1, 0x07));

        /// <summary>
        /// 未连接颜色（灰色）| Disconnected color (gray)
        /// </summary>
        private static readonly SolidColorBrush DisconnectedBrush = new(Color.FromRgb(0xBD, 0xBD, 0xBD));

        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
        {
            if (values.Length >= 2 && values[0] is bool isConnected && values[1] is string statusText)
            {
                if (isConnected)
                    return ConnectedBrush;

                // 检查状态文本是否包含"重连"关键字 | Check if status text contains reconnecting keyword
                if (statusText != null &&
                    (statusText.Contains("重连") || statusText.Contains("Reconnect", StringComparison.OrdinalIgnoreCase)))
                    return ReconnectingBrush;
            }

            return DisconnectedBrush;
        }

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