namespace ln.ethercat
{
    public class SDOAddr
    {
        public int Slave { get; private set; }
        public int Index { get; private set; }
        public int SubIndex { get; private set; }

        public long Linear { get; private set; }
        public int Compact { get; private set; }

        public SDOAddr(int slave, int index) : this(slave, index, 0) { }
        public SDOAddr(int slave, int index, int subindex)
        {
            Slave = slave;
            Index = index;
            SubIndex = subindex;

            Linear = ((long)(ulong)Slave << 32) | ((long)Index << 16) | (long)SubIndex;
            Compact = ((Slave << 24) | (Index << 8) | SubIndex) ^ ((Slave & 0xFF00) << 24);
        }

        public override bool Equals(object obj) => (obj is SDOAddr other) && (Linear == other.Linear);
        public override int GetHashCode() => Compact;

        public override string ToString()
        {
            return string.Format("[SDOAddr Slave={0} Index={1:X4}.{2} ]", Slave, Index, SubIndex);
        }


    }
}