function PerformAction($actionName, $championId, $userId)
{
$error = new Error();
if (strcmp($actionName, "Add") == 0) {
$error = ChampionFacade::AddChampionToUser($championId, $userId);
} else {
if (strcmp($actionName, "Remove") == 0) {
$error = ChampionFacade::RemoveChampionFromUser($championId, $userId);
} else {
$error = new Error(Error::InvalidParameter, "Invalid action: " . $actionName);
}
}
return $error;
}
