private static void AddFriend()
{
int Id = Int32.Parse(ReadStringFromInput("Your ID: "));
PersonFound personFound = PersonService.GetById(Id);
if (!personFound.Found)
{
Console.WriteLine("ID does not exists.");
return;
}
int FriendId = Int32.Parse(ReadStringFromInput("Friend ID: "));
if (FriendId == Id)
{
Console.WriteLine("You can not add yourself as friend.");
return;
}
PersonFound friendFound = PersonService.GetById(FriendId);
if (!friendFound.Found)
{
Console.WriteLine("ID does not exists.");
return;
}
if (personFound.Person.Friends.Exists(person => person.personId == personFound.Person.Id && person.friendId == friendFound.Person.Id))
{
Console.WriteLine("This person is already your friend.");
return;
}
PersonService.AddPersonFriend(personFound.Person.Id, friendFound.Person.Id);
}