public Friend AddFriend(int userId)
{
return(Operation(() =>
{
CheckIsUserAuthenticated();
CheckDoesUserExist(userId);
if (serverManager.DoesFriendExist(LoggedUser.Id, userId))
{
throw new Exception("Can't add a friend twice");
}
var friend = serverManager.AddFriend(LoggedUser.Id, userId);
// Notifying the user if he is connected someone added him
NotifyUserFriendStatusChanged(userId, friend, LoggedUser);
return friend;
}));
}
