/// <summary>
/// tries to decline a friend request from user with username
/// </summary>
public void DeclineFriendRequestFrom(string username)
{
if (UnopenedFriendRequests.Contains(username))
{
FriendsDal.ChangeStatus(username, this.username, (int)FriendRequestStatus.Declined);
}
else
{
throw new Exception("You Have No Friend Invitation From This Friend");
}
}
/// <summary>
/// tries to send a friend request and returns a textual response
/// </summary>
public string AddFriend(string username)
{
if (DeclinedFriends.Contains(username))
{
FriendsDal.ChangeStatus(username, this.username, (int)FriendRequestStatus.Accepted);
return("Your'e now friends with" + username);
}
else if (!FriendsDal.FriendRequestExists(username, this.username))
{
FriendsDal.AddFriend(this.username, username);
return("Your friend request has been sent successfuly to " + username);
}
return("there already exists a friend request between you and" + username);
}