namespace NubLang;

public static class HexString
{
    private static readonly HashSet<string> _used = [];

    private static readonly char[] StringChars = "0123456789abcdef".ToArray();

    public static string CreateUnique(int length)
    {
        string hex;

        while (true)
        {
            hex = Create(length);
            if (_used.Add(hex))
            {
                break;
            }
        }

        return hex;
    }

    public static string Create(int length)
    {
        var rand = new Random();
        var hexString = "";

        for (var i = 0; i < length; i++)
        {
            var randIndex = rand.Next(0, StringChars.Length);
            hexString += StringChars[randIndex];
        }

        return hexString;
    }
}