Attempt to create an sync IO for bukkit

Feck.scala

object Bukkit {

  import scala.concurrent.ExecutionContext

  implicit val cs: ContextShift[IO] = IO.contextShift(ExecutionContext.global)

  def scheduler: BukkitScheduler = JBukkit.getScheduler

  def runTask(task: IO[Unit])(implicit plugin: JavaPlugin): BukkitTask = scheduler.runTask(plugin, Utils.mkRunnable(task.unsafeRunSync()))

  def runTaskAsync(task: IO[Unit])(implicit plugin: JavaPlugin): BukkitTask = scheduler.runTaskAsynchronously(plugin, Utils.mkRunnable(task.unsafeRunSync()))

  def callSyncMethod[T](codeBlock: => T)(implicit plugin: JavaPlugin): IO[T] = {
    def fun(deferred: Deferred[IO, T]) =
      for {
        res <- IO {
          codeBlock
        }
        _ <- deferred.complete(res).attempt.void
      } yield ()

    for {
      deferred <- Deferred[IO, T]
      _ <- IO {
        runTask(fun(deferred))
      }
      res <- deferred.get
    } yield res
  }
}