DiscordChatExporter/DiscordChatExporter.Gui/Converters/SnowflakeToDateTimeOffsetConverter.cs

using System;
using System.Globalization;
using System.Windows.Data;
using DiscordChatExporter.Core.Discord;

namespace DiscordChatExporter.Gui.Converters;

[ValueConversion(typeof(Snowflake?), typeof(DateTimeOffset?))]
public class SnowflakeToDateTimeOffsetConverter : IValueConverter
{
    public static SnowflakeToDateTimeOffsetConverter Instance { get; } = new();

    public object? Convert(object value, Type targetType, object parameter, CultureInfo culture) =>
        value is Snowflake snowflake
            ? snowflake.ToDate()
            : null;

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