namespace RGB.NET.Core
{
    /// <summary>
    /// Contains helper methods for converting things.
    /// </summary>
    public static class ConversionHelper
    {
        #region Methods

        // Source: https://web.archive.org/web/20180224104425/https://stackoverflow.com/questions/623104/byte-to-hex-string/3974535
        /// <summary>
        /// Converts an array of bytes to a HEX-representation.
        /// </summary>
        /// <param name="bytes">The array of bytes.</param>
        /// <returns>The HEX-representation of the provided bytes.</returns>
        public static string ToHex(params byte[] bytes)
        {
            char[] c = new char[bytes.Length * 2];

            for (int bx = 0, cx = 0; bx < bytes.Length; ++bx, ++cx)
            {
                byte b = ((byte)(bytes[bx] >> 4));
                c[cx] = (char)(b > 9 ? b + 0x37 + 0x20 : b + 0x30);

                b = ((byte)(bytes[bx] & 0x0F));
                c[++cx] = (char)(b > 9 ? b + 0x37 + 0x20 : b + 0x30);
            }

            return new string(c);
        }

        #endregion
    }
}