FriendlyByteConverter.cs

using System;
using Microsoft.UI.Xaml.Data;

namespace Coder.Desktop.App.Converters;

public class FriendlyByteConverter : IValueConverter
{
    private static readonly string[] Suffixes = ["B", "KB", "MB", "GB", "TB", "PB", "EB"];

    public object Convert(object value, Type targetType, object parameter, string language)
    {
        switch (value)
        {
            case int i:
                if (i < 0) i = 0;
                return FriendlyBytes((ulong)i);
            case uint ui:
                return FriendlyBytes(ui);
            case long l:
                if (l < 0) l = 0;
                return FriendlyBytes((ulong)l);
            case ulong ul:
                return FriendlyBytes(ul);
            default:
                return FriendlyBytes(0);
        }
    }

    public object ConvertBack(object value, Type targetType, object parameter, string language)
    {
        throw new NotImplementedException();
    }

    public static string FriendlyBytes(ulong bytes)
    {
        if (bytes == 0)
            return $"0 {Suffixes[0]}";

        var place = System.Convert.ToInt32(Math.Floor(Math.Log(bytes, 1024)));
        var num = Math.Round(bytes / Math.Pow(1024, place), 1);
        return $"{num} {Suffixes[place]}";
    }
}