Scala: parsing an API parameter - scala

Question

My API currently take an optional parameter named gamedate. It is passed in as a string at which time I later parse it to a Date object using some utility code. The code looks like this:
val gdate:Option[String] = params.get("gamedate")
val res = gdate match {
case Some(s) => {
val date:Option[DateTime] = gdate map { MyDateTime.parseDate _ }
val dateOrDefault:DateTime = date.getOrElse((new DateTime).withTime(0, 0, 0, 0))
NBAScoreboard.findByDate(dateOrDefault)
}
case None => NBAScoreboard.getToday
}
This works just fine. Now what I'm trying to solve is I'm allowing multiple gamedates get passed in via a comma delimited list. Originally you can pass a parameter like this:
gamedate=20131211
now I want to allow that OR:
gamedate=20131211,20131212
That requires modifying the code above to try to split the comma delimited string and parse each value into a Date and change the interface to findByDate to accept a Seq[DateTime] vs just DateTime. I tried running something like this, but apparently it's not the way to go about it:
val res = gdates match {
case Some(s) => {
val dates:Option[Seq[DateTime]] = gdates map { _.split(",").distinct.map(MyDateTime.parseDate _ )}
val datesOrDefault:Seq[DateTime] = dates map { _.getOrElse((new DateTime).withTime(0, 0, 0, 0))}
NBAScoreboard.findByDates(datesOrDefault)
}
case None => NBAScoreboard.getToday
}
What's the best way to convert my first set of code to handle this use case? I'm probably fairly close in the second code example I provided, but I'm just not hitting it right.

Answer 1

You mixed up the containers. The map you call on dates unpackes the Option so the getOrElse is applied to a list.
val res = gdates match {
case Some(s) =>
val dates = gdates.map(_.split(",").distinct.map(MyDateTime.parseDate _ ))
val datesOrDefault = dates.getOrElse(Array((new DateTime).withTime(0, 0, 0, 0)))
NBAScoreboard.findByDates(datesOrDefault)
case _ =>
NBAScoreboard.getToday
}
This should work.