using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Data;

namespace MainShell.Converter
{
    public class DateTimeToStringConverter : IValueConverter
    {
        public string Format { get; set; } = "yyyy-MM-dd HH:mm:ss";

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value == null) return string.Empty;
            if (!(value is DateTime dt)) return string.Empty;
            if (dt == DateTime.MinValue) return string.Empty;

            // parameter 优先用于临时格式覆盖
            var fmt = parameter as string ?? Format;
            return dt.ToString(fmt, culture);
        }

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