orElse

orelse.scala

  implicit class OrElseHelper[S, Z](from: (S => Future[Option[Z]])) {
    // TODO: Verify if this helper is generalized enough to move to a more central generic area.
    def orElse(to : (Z => Future[Z]))(s : S)(c : Z): Future[Either[Future[Z],Future[Z]]] = {
      from(s) flatMap {
        case None => Future.successful(Left(to(c)))
        case Some(someValue) => Future.successful(Right(Future.successful(someValue)))
      }
    }

  }