package wow.doge.mygame.subsystems.events

import scala.concurrent.duration._

import akka.actor.typed.ActorRef
import akka.actor.typed.ActorSystem
import akka.actor.typed.LogOptions
import akka.actor.typed.Props
import akka.actor.typed.SpawnProtocol
import akka.actor.typed.SupervisorStrategy
import akka.actor.typed.scaladsl.Behaviors
import akka.util.Timeout
import cats.effect.Resource
import com.typesafe.scalalogging.{Logger => SLLogger}
import monix.bio.Task
import org.slf4j.event.Level
import wow.doge.mygame.events.EventBus
import wow.doge.mygame.implicits._
import wow.doge.mygame.subsystems.events.EntityMovementEvent.PlayerMovementEvent

class EventsModule2(
    spawnProtocol: ActorSystem[SpawnProtocol.Command]
) {
  implicit lazy val s = spawnProtocol.scheduler

  implicit lazy val timeout = Timeout(1.second)

  lazy val eventBusLogger = SLLogger[EventBus[_]]

  lazy val playerMovementEventBusTask =
    createEventBus[PlayerMovementEvent]("movementEventBus")

  lazy val playerCameraEventBusTask =
    createEventBus[PlayerCameraEvent]("playerCameraEventBus", Level.DEBUG)

  def createEventBus[T](busName: String, logLevel: Level = Level.DEBUG) =
    spawnProtocol.askL(
      SpawnProtocol.Spawn[EventBus.Command[T]](
        Behaviors.logMessages(
          logOptions = LogOptions()
            .withLevel(logLevel)
            .withLogger(eventBusLogger.underlying),
          Behaviors
            .supervise(EventBus[T]())
            .onFailure[Exception](SupervisorStrategy.restart)
        ),
        busName,
        Props.empty,
        _
      )
    )

  type EventBuses = (
      ActorRef[
        EventBus.Command[EntityMovementEvent.PlayerMovementEvent],
      ],
      ActorRef[EventBus.Command[PlayerCameraEvent]]
  )

  val resource: Resource[Task, EventBuses] =
    Resource.liftF(for {
      playerMovementEventBus <- playerMovementEventBusTask
      playerCameraEventBus <- playerCameraEventBusTask
    } yield (playerMovementEventBus, playerCameraEventBus))
}