using System;
using System.Collections.Generic;
using System.Text;

namespace DirectUSB.VirtualPackets
{
  public class DirectoryListingPacket : VirtualPacket
  {
    #region Declarations

    public enum Attribute
    {
      VariableSize = 0x0001,
      VariableType = 0x0002,
      ArchivedStatus = 0x0003
    };

    #endregion

    #region Constructors / Teardown

    public DirectoryListingPacket(List<Attributes.Attribute.AttributeType> attribs)
      : base(0x0009)
    {
      var data = new byte[4 + (attribs.Count * 2) + 7];

      data[0] = 0x00;
      data[1] = 0x00;
      data[2] = (byte)(attribs.Count >> 8);
      data[3] = (byte)(attribs.Count & 0xFF);
      int i;
      for (i = 0; i < attribs.Count; i++)
      {
        data[4 + (i * 2) + 0] = (byte)((short)attribs[i] >> 8);
        data[4 + (i * 2) + 1] = (byte)((short)attribs[i] & 0xFF);
      }
      data[4 + (attribs.Count * 2) + 0] = 0x00;
      data[4 + (attribs.Count * 2) + 1] = 0x01;
      data[4 + (attribs.Count * 2) + 2] = 0x00;
      data[4 + (attribs.Count * 2) + 3] = 0x01;
      data[4 + (attribs.Count * 2) + 4] = 0x00;
      data[4 + (attribs.Count * 2) + 5] = 0x01;
      data[4 + (attribs.Count * 2) + 6] = 0x01;

      Data = data;
    }

    #endregion
  }
}