clean up missing lessonSlides

gistfile1.scala

val decks = Await.result(ComponentRegistry.slideDeckDao.tableScan, 100.seconds)
val lpms = Await.result(ComponentRegistry.lessonPublishableMediaDao.tableScan, 100.seconds)
val lessonSlides = Await.result(ComponentRegistry.lessonSlideDao.tableScan, 100.seconds)
val slides = Await.result(ComponentRegistry.slideDao.tableScan, 100.seconds)

slides map { slide =>
  decks find (_.id == Some(slide.slideDeckId)) map { deck =>
    if (deck.publishableMediaId != slide.publishableMediaId) {
      println("found broken slide: " + slide.id)
      val updatedSlide = slide.copy(publishableMediaId = deck.publishableMediaId)
      Await.result(ComponentRegistry.slideDao.update(updatedSlide), 100.seconds)
      
      lpms filter (_.publishableMediaId == deck.publishableMediaId) map { lpm =>
        val lessonSlide = lessonSlides find (ls => ls.lessonId == lpm.lessonId && Some(ls.slideId) == slide.id)
        if (lessonSlide.isEmpty) {
          val newLessonSlide = models.LessonSlide(lpm.lessonId, slide.getIdOrFail, slide.slideDeckId, slide.institutionId)
          Await.result(ComponentRegistry.lessonSlideService.create(newLessonSlide), 100.seconds)
        }
      }
      
      Thread.sleep(50)
    }
  }
}