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

namespace UniperHMI
{
    public class DateTimeToEventTimeConverter : IValueConverter
    {
        // 599264352000000000 ticks is a date used by beckhoff for events that didnt happen up to this point
        public const long NoTime = 599264352000000000;
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value is DateTime dt)
            {
                
                if (dt.Ticks == NoTime)
                    return "";
                else
                {
                    CultureInfo cultureInfo = CultureInfo.CurrentCulture;
                    return dt.ToString("G", cultureInfo);
                }
            }
            else
                throw new InvalidOperationException("Target must be of type DateTime");
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return DependencyProperty.UnsetValue;
        }
    }
}