public string In(Interfaces.IUserAgent user, int seatIndex)
{
Protocol.Result result = new Protocol.Result();
result.Success = true;
if (user.Desk != null)
{
user.Desk.Exit(user);
}
for (int i = 0; i < Seats.Count; i++)
{
Interfaces.ISeat seat = Seats[i];
if (seat.Index == seatIndex)
{
lock (seat)
{
if (seat.User == null || seat.User == user)
{
if (user.Seat != null)
{
user.Seat.User = null;
}
seat.User = user;
user.Desk = this;
user.Seat = seat;
Room.UpdateDesk(this);
}
else
{
result.Success = false;
return("位置已经被占用!");
}
}
}
}
lock (Visitors)
{
if (!Visitors.Contains(user))
{
Visitors.Add(user);
}
System.Threading.Interlocked.Increment(ref mVersion);
}
return(null);
}