namespace CPUSimulation
{
    public class Utils
    {
        static Random _random = new Random();

        /// <summary>
        /// Generates a random word 
        /// </summary>
        /// <param name="byteCount"></param>
        /// input must be between 0 and 2 (inclusive)
        /// <returns></returns>
        /// <exception cref="ArgumentException"></exception>
        public static Word GenerateRandomWord(int byteCount)
        {
            if (byteCount < 0)
            {
                byteCount = 0;
            }
            Byte[] bytes = new Byte[byteCount];
            for (int i = 0; i < byteCount; i++)
            {
                bytes[i] = GenerateRandomByte();
            }
            if (byteCount == 1)
            {
                bytes = new Byte[2] { new Byte("00000000"), bytes[0] };
            }
            else if (byteCount == 0)
            {
                bytes = new Byte[2] { new Byte("00000000"), new Byte("00000000") };
            }
            return new Word(bytes);
        
            
        }
        public static Byte GenerateRandomByte()
        {
            Bit[] bits = new Bit[8];
            for (int i = 0; i < 8; i++)
            {
                bits[i] = new Bit(_random.Next(2) == 1);
            }
            return new Byte(bits);
        }

        public static string Int16ToBinaryString(short value)
        {
            return Convert.ToString(value & 0xFFFF, 2).PadLeft(16, '0');
        }
    }
}