import net.minecraftforge.fml.ModList
import net.minecraftforge.fml.common.Mod
import net.minecraftforge.fml.event.lifecycle.FMLCommonSetupEvent
import net.minecraftforge.fml.javafmlmod.FMLJavaModLoadingContext
import org.apache.logging.log4j.{LogManager, Logger}
//import com.mod.civcraft.registery.Register
@Mod(CivCraft.modId)
object CivCraft {
  final val modId = "civcraft"
  val LOGGER:Logger = LogManager.getLogger(modId)

  require(Class.forName("scala.Option").getMethod("empty").invoke(null) == None)
  
  def init( event: FMLCommonSetupEvent): Unit = {
    //Register.init()

    LOGGER.info("Hello from ScalaModObject#init")
    LOGGER.info(s"Mod($modId) is loaded. " + event)
    //LOGGER.info(ModId(modId).show)
  }
  FMLJavaModLoadingContext.get().getModEventBus.addListener(CivCraft.init)

  case class ModId(id: String)

  // Example of Cats instance.
  implicit val showId: Show[ModId] = (t: ModId) => {
    val name = ModList.get().getModObjectById[AnyRef](t.id).map[String](o => o.getClass.getName).orElse("None")
    s"ID: ${t.id}, Class: $name"
  }
  object BadEventHandler {
    @SubscribeEvent
    def worldLogin(worldEvent: LevelEvent): Unit = {
      LOGGER.fatal("NEVER HAPPENED " + worldEvent)
    }
  }
}
class CivCraft {
  throw new java.lang.AssertionError("Mod class (not object) must not be loaded by forge. The companion object is mod instance.")
}