options2map

options2map.scala

object Constants {
  val MaterialSep = ","
}

case class Client(need: Option[String], product: Option[String])

def optionsIntoMap(x1: (String, Option[String]),
                   x2: (String, Option[String])): Map[String, List[String]] = {
  List(x1, x2).collect {
    case (name, Some(str)) => name -> str.split(Constants.MaterialSep).toList
  } toMap
}

def handleClient(client: Client): Map[String, List[String]] =
  optionsIntoMap("material" -> client.need, "product" -> client.product)

assert(handleClient(Client(Some("need,need2"), None)) ==
  Map("material" -> List("need", "need2")))
assert(handleClient(Client(None, Some("product,product2"))) ==
  Map("product" -> List("product", "product2")))
assert(handleClient(Client(Some("need,need2"), Some("product,product2"))) ==
  Map(
    "material" -> List("need", "need2"),
    "product" -> List("product", "product2")
  ))
assert(handleClient(Client(None, None)) == Map())