CloudMusic/FNZCM/FNZCM.Shared/Helpers/HumanReadHelper.cs

namespace FNZCM.Shared.Helpers
{
    public static class HumanReadHelper
    {
        public static string NullOrEmptyEscape(this string me, string escape) => string.IsNullOrWhiteSpace(me) ? escape : me;

        public static string SecondToDur(this int sec) => ((int?)sec).SecondToDur();
        public static string SecondToDur(this int? sec)
        {
            if (sec.HasValue == false) return string.Empty;
            var ts = TimeSpan.FromSeconds(sec.Value);

            return Math.Floor(ts.TotalDays) >= 1
                ? $"{Math.Floor(ts.TotalDays):00}.{ts.Hours:00}:{ts.Minutes:00}:{ts.Seconds:00}"
                : Math.Floor(ts.TotalHours) >= 1
                    ? $"{Math.Floor(ts.TotalHours):00}:{ts.Minutes:00}:{ts.Seconds:00}"
                    : $"{Math.Floor(ts.TotalMinutes):00}:{ts.Seconds:00}";
        }

        public static string BytesToFileSize(this long length) => ((long?)length).BytesToFileSize();
        public static string BytesToFileSize(this long? length)
        {
            if (length.HasValue == false) return string.Empty;

            string[] sizes = { "B", "KB", "MB", "GB", "TB" };
            double len = length.Value;
            int order = 0;
            while (len >= 1024 && order < sizes.Length - 1)
            {
                order++;
                len = len / 1024;
            }

            // Adjust the format string to your preferences. For example "{0:0.#}{1}" would
            // show a single decimal place, and no space.
            string result = $"{len:000.00}{sizes[order]}";
            return result;
        }
    }
}