def apply[A]()

in membership-common/src/main/scala/com/gu/memsub/subsv2/services/SubscriptionService.scala [25:37]

• 12 lines of code
• 6 McCabe index (conditional complexity)

  def apply[A](eitherList: List[String \/ A]): String \/ NonEmptyList[A] = {
    val zero = (List[String](), List[A]())
    val product = eitherList.foldRight(zero)({
      case (-\/(left), (accuLeft, accuRight)) => (left :: accuLeft, accuRight)
      case (\/-(right), (accuLeft, accuRight)) => (accuLeft, right :: accuRight)
    })
    // if any are right, return them all, otherwise return all the left
    product match {
      case (Nil, Nil) => -\/("no subscriptions found at all, even invalid ones") // no failures or successes
      case (errors, Nil) => -\/(errors.mkString("\n")) // no successes
      case (_, result :: results) => \/-(NonEmptyList.fromSeq(result, results)) // discard some errors as long as some worked (log it?)
    }
  }