package controllers

import actors.auctions.AuctionPublisher
import controllers.authentication.AuthenticatedAction
import dao.{AuctionsDAO, AuthTokensDAO}
import models.Auction
import org.apache.pekko.actor.typed.ActorRef
import play.api.libs.functional.syntax.toFunctionalBuilderOps
import play.api.libs.json.{JsError, JsPath, JsValue, Json, Reads, Writes}
import play.api.mvc.{BaseController, ControllerComponents}

import java.security.SecureRandom
import javax.inject.{Inject, Singleton}
import scala.concurrent.{ExecutionContext, Future}

@Singleton
class AuctionsController @Inject()(val controllerComponents: ControllerComponents,
                                   val auctionsDAO: AuctionsDAO,
                                   val authTokensDAO: AuthTokensDAO,
                                   val auctionPublisher: ActorRef[AuctionPublisher.Command],
                                   implicit val ec: ExecutionContext) extends BaseController {
  def create = Action.andThen(AuthenticatedAction(authTokensDAO)).async(parse.json) { implicit request =>
    val auctionCreateDataResult = request.body.validate[AuctionCreateData]
    auctionCreateDataResult.fold(
      errors => Future.successful(BadRequest(JsError.toJson(errors))),
      auctionCreateData => {
        for {
          auction <- auctionsDAO.create(auctionCreateData.name, auctionCreateData.startingPrice, request.user)
          json = Json.toJson(auction)
          response = Created(json)
          _ = auctionPublisher ! AuctionPublisher.Publish(auction, request.user)
        } yield response
      }
    )
  }

  private case class AuctionCreateData(name: String, startingPrice: BigDecimal)
  private implicit val auctionCreateDataReads: Reads[AuctionCreateData] = (
    (JsPath \ "name").read[String] and (JsPath \ "starting_price").read[BigDecimal]
  )(AuctionCreateData.apply)
}