public void IsUserNameValid(string userName, out string message)
{
message = "username ok";
if (string.IsNullOrEmpty(userName))
{
message = "cannot be empty";
}
else if (userName.Length < 6)
{
message = "6 chars min";
}
else if (!LoginManager.CheckIfUserNameIsAvailable(ChatServer.Encryptor.Encrypt(userName)))
{
message = "user name is already taken";
}
}
