Sequence of Futures

sof.scala

def details(since: Option[LocalDate], until: Option[LocalDate], page: Int): Future[NumberedDetailsPage] = { ... }


details(since, until, 1).flatMap { page1 =>
  val pagesFuture = Future.sequence(
    for {
      n <- (2 to page1.details.totalPages).toList
    } yield {
      details(since, until, n)
    }
  )
  pagesFuture.map(pages2toN => (page1 :: pages2toN).map(_.details.data).flatten)
}