src/main/scala/li/cil/oc/common/EventHandler.scala

package li.cil.oc.common

import cpw.mods.fml.common.Optional
import cpw.mods.fml.common.eventhandler.SubscribeEvent
import cpw.mods.fml.common.gameevent.PlayerEvent._
import cpw.mods.fml.common.gameevent.TickEvent
import cpw.mods.fml.common.gameevent.TickEvent.ServerTickEvent
import cpw.mods.fml.common.network.FMLNetworkEvent.ClientConnectedToServerEvent
import li.cil.oc._
import li.cil.oc.api.Network
import li.cil.oc.api.detail.ItemInfo
import li.cil.oc.client.renderer.PetRenderer
import li.cil.oc.client.{PacketSender => ClientPacketSender}
import li.cil.oc.common.tileentity.traits.power
import li.cil.oc.integration.Mods
import li.cil.oc.integration.util
import li.cil.oc.server.{PacketSender => ServerPacketSender}
import li.cil.oc.util.ItemUtils
import li.cil.oc.util.LuaStateFactory
import li.cil.oc.util.SideTracker
import li.cil.oc.util.UpdateCheck
import net.minecraft.client.Minecraft
import net.minecraft.entity.player.EntityPlayerMP
import net.minecraft.item.ItemStack
import net.minecraft.server.MinecraftServer
import net.minecraft.tileentity.TileEntity
import net.minecraftforge.common.MinecraftForge
import net.minecraftforge.common.util.ForgeDirection
import net.minecraftforge.event.world.WorldEvent
import resonant.api.electric.IEnergyNode

import scala.collection.mutable
import scala.concurrent.ExecutionContext.Implicits.global
import scala.concurrent.Future

object EventHandler {
  private val pending = mutable.Buffer.empty[() => Unit]

  def schedule(tileEntity: TileEntity) {
    if (SideTracker.isServer) pending.synchronized {
      pending += (() => Network.joinOrCreateNetwork(tileEntity))
    }
  }

  def schedule(f: () => Unit) {
    pending.synchronized {
      pending += f
    }
  }

  @Optional.Method(modid = Mods.IDs.ForgeMultipart)
  def scheduleFMP(tileEntity: () => TileEntity) {
    if (SideTracker.isServer) pending.synchronized {
      pending += (() => Network.joinOrCreateNetwork(tileEntity()))
    }
  }

  @Optional.Method(modid = Mods.IDs.ResonantEngine)
  def scheduleAE2Add(tileEntity: power.AppliedEnergistics2) {
    if (SideTracker.isServer) pending.synchronized {
      pending += (() => if (!tileEntity.isInvalid) {
        tileEntity.getGridNode(ForgeDirection.UNKNOWN).updateState()
      })
    }
  }

  @Optional.Method(modid = Mods.IDs.IndustrialCraft2API)
  def scheduleIC2Add(tileEntity: power.IndustrialCraft2Experimental) {
    if (SideTracker.isServer) pending.synchronized {
      pending += (() => if (!tileEntity.addedToIC2PowerGrid && !tileEntity.isInvalid) {
        MinecraftForge.EVENT_BUS.post(new ic2.api.energy.event.EnergyTileLoadEvent(tileEntity.asInstanceOf[ic2.api.energy.tile.IEnergyTile]))
        tileEntity.addedToIC2PowerGrid = true
      })
    }
  }

  @Optional.Method(modid = Mods.IDs.IndustrialCraft2Classic)
  def scheduleIC2Add(tileEntity: power.IndustrialCraft2Classic) {
    if (SideTracker.isServer) pending.synchronized {
      pending += (() => if (!tileEntity.addedToIC2PowerGrid && !tileEntity.isInvalid) {
        MinecraftForge.EVENT_BUS.post(new ic2classic.api.energy.event.EnergyTileLoadEvent(tileEntity.asInstanceOf[ic2classic.api.energy.tile.IEnergyTile]))
        tileEntity.addedToIC2PowerGrid = true
      })
    }
  }

  @Optional.Method(modid = Mods.IDs.ResonantEngine)
  def scheduleUEAdd(tileEntity: power.ResonantEngine) {
    if (SideTracker.isServer) pending.synchronized {
      pending += (() => if (!tileEntity.isInvalid) {
        tileEntity.getNode(classOf[IEnergyNode], ForgeDirection.UNKNOWN).reconstruct()
      })
    }
  }

  def scheduleWirelessRedstone(rs: server.component.RedstoneWireless) {
    if (SideTracker.isServer) pending.synchronized {
      pending += (() => if (!rs.owner.isInvalid) {
        util.WirelessRedstone.addReceiver(rs)
        util.WirelessRedstone.updateOutput(rs)
      })
    }
  }

  @SubscribeEvent
  def onTick(e: ServerTickEvent) = if (e.phase == TickEvent.Phase.START) {
    pending.synchronized {
      val adds = pending.toArray
      pending.clear()
      adds
    } foreach (callback => {
      try callback() catch {
        case t: Throwable => OpenComputers.log.warn("Error in scheduled tick action.", t)
      }
    })
  }

  @SubscribeEvent
  def playerLoggedIn(e: PlayerLoggedInEvent) {
    if (SideTracker.isServer) e.player match {
      case player: EntityPlayerMP =>
        if (!LuaStateFactory.isAvailable) {
          player.addChatMessage(Localization.Chat.WarningLuaFallback)
        }
        if (!Settings.get.pureIgnorePower && Settings.get.ignorePower) {
          player.addChatMessage(Localization.Chat.WarningPower)
        }
        ServerPacketSender.sendPetVisibility(None, Some(player))
        // Do update check in local games and for OPs.
        if (!Mods.VersionChecker.isAvailable && (!MinecraftServer.getServer.isDedicatedServer || MinecraftServer.getServer.getConfigurationManager.func_152596_g(player.getGameProfile))) {
          Future {
            UpdateCheck.info onSuccess {
              case Some(release) => player.addChatMessage(Localization.Chat.InfoNewVersion(release.tag_name))
            }
          }
        }
      case _ =>
    }
  }

  @SubscribeEvent
  def clientLoggedIn(e: ClientConnectedToServerEvent) {
    PetRenderer.hidden.clear()
    if (Settings.get.hideOwnPet) {
      PetRenderer.hidden += Minecraft.getMinecraft.thePlayer.getCommandSenderName
    }
    ClientPacketSender.sendPetVisibility()
  }

  lazy val drone = api.Items.get("drone")
  lazy val eeprom = api.Items.get("eeprom")
  lazy val mcu = api.Items.get("microcontroller")
  lazy val navigationUpgrade = api.Items.get("navigationUpgrade")

  @SubscribeEvent
  def onCrafting(e: ItemCraftedEvent) = {
    recraft(e, navigationUpgrade, stack => {
      // Restore the map currently used in the upgrade.
      Option(api.Driver.driverFor(e.crafting)) match {
        case Some(driver) => Option(ItemUtils.loadStack(driver.dataTag(stack).getCompoundTag(Settings.namespace + "map")))
        case _ => None
      }
    })

    recraft(e, mcu, stack => {
      // Restore EEPROM currently used in microcontroller.
      new ItemUtils.MicrocontrollerData(stack).components.find(api.Items.get(_) == eeprom)
    })

    recraft(e, drone, stack => {
      // Restore EEPROM currently used in drone.
      new ItemUtils.MicrocontrollerData(stack).components.find(api.Items.get(_) == eeprom)
    })
  }

  private def recraft(e: ItemCraftedEvent, item: ItemInfo, callback: ItemStack => Option[ItemStack]): Unit = {
    if (api.Items.get(e.crafting) == item) {
      for (slot <- 0 until e.craftMatrix.getSizeInventory) {
        val stack = e.craftMatrix.getStackInSlot(slot)
        if (api.Items.get(stack) == item) {
          callback(stack).foreach(extra => if (!e.player.inventory.addItemStackToInventory(extra)) {
            e.player.dropPlayerItemWithRandomChoice(extra, false)
          })
        }
      }
    }
  }

  @SubscribeEvent
  def onWorldUnload(e: WorldEvent.Unload) {
    if (!e.world.isRemote) {
      import scala.collection.convert.WrapAsScala._
      e.world.loadedTileEntityList.collect {
        case te: tileentity.traits.TileEntity => te.dispose()
      }
    }
  }
}