DiscordChatExporter/DiscordChatExporter.Gui/Converters/LocaleToDisplayNameConverter.cs

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

namespace DiscordChatExporter.Gui.Converters;

[ValueConversion(typeof(string), typeof(string))]
public class LocaleToDisplayNameConverter : IValueConverter
{
    public static LocaleToDisplayNameConverter Instance { get; } = new();

    public object? Convert(object value, Type targetType, object parameter, CultureInfo culture) =>
        value is string locale ? CultureInfo.GetCultureInfo(locale).DisplayName : null;

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