using DeviceId;
using System.Security.Cryptography;
using System.Text;
using System.Xml.Linq;

namespace Salmon.Model.Monitor;

public static class Helper
{
    public static string GetMachineId()
    {
        string deviceId = new DeviceIdBuilder()
            .OnWindows(windows => windows
                .AddMotherboardSerialNumber()
            )
            .OnLinux(linux => linux
                .AddMotherboardSerialNumber()
            )
            .OnMac(mac => mac
                .AddPlatformSerialNumber()
            )
            .ToString();

        return deviceId;
    }

    public static string CreateIdFrom(params object[] args)
    {
        var sum = String.Join("", args);

        var alg = SHA512.Create();
        var hash = alg.ComputeHash(Encoding.UTF8.GetBytes(sum));

        return Convert.ToBase64String(hash);
    }

    //src: https://stackoverflow.com/questions/14488796/does-net-provide-an-easy-way-convert-bytes-to-kb-mb-gb-etc (@JLRishe)
    static readonly string[] SizeSuffixes =
                       { "bytes", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB" };
    static public string SizeSuffix(Int64 value, int decimalPlaces = 1)
    {
        if (decimalPlaces < 0) { throw new ArgumentOutOfRangeException("decimalPlaces"); }
        if (value < 0) { return "-" + SizeSuffix(-value, decimalPlaces); }
        if (value == 0) { return string.Format("{0:n" + decimalPlaces + "} bytes", 0); }

        // mag is 0 for bytes, 1 for KB, 2, for MB, etc.
        int mag = (int)Math.Log(value, 1024);

        // 1L << (mag * 10) == 2 ^ (10 * mag) 
        // [i.e. the number of bytes in the unit corresponding to mag]
        decimal adjustedSize = (decimal)value / (1L << (mag * 10));

        // make adjustment when the value is large enough that
        // it would round up to 1000 or more
        if (Math.Round(adjustedSize, decimalPlaces) >= 1000)
        {
            mag += 1;
            adjustedSize /= 1024;
        }

        return string.Format("{0:n" + decimalPlaces + "} {1}",
            adjustedSize,
            SizeSuffixes[mag]);
    }
}