class MusicBrainzSearchController @Inject() (musicbrainz: ArtistService) extends Controller {
 
  def search(phrase: String) = Action.async {
    def searchQuery = Builder(value).build
           
    musicbrainz.search(searchQuery).map(_.toList).map(
      Some(_)
        .filter(_.nonEmpty)
        .map(toJson(_))
        .map(Ok(_))
      .getOrElse(NoContent)))
      
  def get(id: String) = Action.async {
    ArtistId.unapply(id)
      .map(musicbrainz.get(_)
        .map(_.map(toJson(_))
          .map(Ok(_))
        .getOrElse(NotFound)))
      .getOrElse(successful(BadRequest))
    .get(_)
      .map(_.map(toJson(_))
        .map(Ok(_))
        .getOrElse(NotFound)))
      .getOrElse(successful(BadRequest))
  }
}