package net.carjump
import akka.actor.ActorSystem
import akka.event.Logging
import akka.http.scaladsl.Http
import akka.http.scaladsl.Http.ServerBinding
import akka.http.scaladsl.model._
import akka.pattern.ask
import akka.http.scaladsl.server.Directives._
import akka.http.scaladsl.server.directives.DebuggingDirectives
import akka.stream.Materializer
import akka.util.Timeout
import scala.concurrent.ExecutionContext
import scala.concurrent.Future
import scala.concurrent.duration._
import akka.http.scaladsl.model._
import akka.http.scaladsl.server._
import StatusCodes._
import Directives._

class WebServer(storingActorRef: StoringActorRef)(implicit mat: Materializer, ec: ExecutionContext, actorSystem: ActorSystem) {
  implicit val timeout = Timeout(5 seconds)
  val route =
    path(LongNumber) { index ⇒
      get {
        val f = (storingActorRef.ref ask StoringActor.Get).mapTo[StoringActor.StoringResult]
        onSuccess(f) { storingResult ⇒
          storingResult match {
            case StoringActor.GetResult(Some(list)) ⇒
              list.get(index) match {
                case Some(element) ⇒
                  complete(HttpEntity(ContentTypes.`text/plain(UTF-8)`, element))
                case None ⇒
                  complete((NotFound, "Element does not exist."))
              }
            case StoringActor.GetResult(None) ⇒
              complete((InternalServerError, "Not yet initialized."))
          }
        }
      }
    }

  def start(interface: String, port: Int): Future[ServerBinding] = {
    val logRoute = DebuggingDirectives.logRequest(("carjump-request", Logging.InfoLevel))(route)
    Http().bindAndHandle(logRoute, interface, port)
  }
}