src/main/scala/li/cil/oc/server/component/Server.scala

package li.cil.oc.server.component

import li.cil.oc.api.Driver
import li.cil.oc.api.Machine
import li.cil.oc.api.driver.item.Memory
import li.cil.oc.api.driver.item.Processor
import li.cil.oc.api.machine.Architecture
import li.cil.oc.api.machine.MachineHost
import li.cil.oc.api.network.Message
import li.cil.oc.api.network.Node
import li.cil.oc.common.Slot
import li.cil.oc.common.inventory.ComponentInventory
import li.cil.oc.common.inventory.ServerInventory
import li.cil.oc.common.item
import li.cil.oc.common.tileentity
import li.cil.oc.init.Items
import li.cil.oc.util.ExtendedNBT._
import net.minecraft.item.ItemStack
import net.minecraft.nbt.NBTTagCompound

class Server(val rack: tileentity.ServerRack, val number: Int) extends MachineHost {
  val machine = Machine.create(this)

  val inventory = new NetworkedInventory()

  def tier = Items.multi.subItem(rack.getStackInSlot(number)) match {
    case Some(server: item.Server) => server.tier
    case _ => 0
  }

  // ----------------------------------------------------------------------- //

  override def cpuArchitecture: Class[_ <: Architecture] = {
    for (i <- 0 until inventory.getSizeInventory if inventory.isComponentSlot(i)) Option(inventory.getStackInSlot(i)) match {
      case Some(s) => Option(Driver.driverFor(s, rack.getClass)) match {
        case Some(driver: Processor) if driver.slot(s) == Slot.CPU => return driver.architecture(s)
        case _ =>
      }
      case _ =>
    }
    null
  }

  override def installedMemory = inventory.items.foldLeft(0)((sum, stack) => sum + (stack match {
    case Some(item) => Option(Driver.driverFor(item, rack.getClass)) match {
      case Some(driver: Memory) => driver.amount(item)
      case _ => 0
    }
    case _ => 0
  }))

  lazy val maxComponents = if (!hasCPU) 0
  else inventory.items.foldLeft(0)((sum, stack) => sum + (stack match {
    case Some(item) => Option(Driver.driverFor(item, rack.getClass)) match {
      case Some(driver: Processor) => driver.supportedComponents(item)
      case _ => 0
    }
    case _ => 0
  }))

  override def componentSlot(address: String) = inventory.components.indexWhere(_.exists(env => env.node != null && env.node.address == address))

  def hasCPU = inventory.items.exists {
    case Some(stack) => Option(Driver.driverFor(stack, rack.getClass)) match {
      case Some(driver) => driver.slot(stack) == Slot.CPU
      case _ => false
    }
    case _ => false
  }

  override def xPosition = rack.x + 0.5

  override def yPosition = rack.y + 0.5

  override def zPosition = rack.z + 0.5

  override def world = rack.world

  override def markForSaving() = rack.markForSaving()

  override def markChanged() = rack.markChanged()

  // ----------------------------------------------------------------------- //

  override def onMachineConnect(node: Node) = inventory.onConnect(node)

  override def onMachineDisconnect(node: Node) = inventory.onDisconnect(node)

  def load(nbt: NBTTagCompound) {
    machine.load(nbt.getCompoundTag("machine"))
  }

  def save(nbt: NBTTagCompound) {
    nbt.setNewCompoundTag("machine", machine.save)
    inventory.saveComponents()
    inventory.markDirty()
  }

  // Required due to abstract overrides in component inventory.
  class NetworkedInventory extends ServerInventory with ComponentInventory {
    override def onConnect(node: Node) {
      if (node == this.node) {
        connectComponents()
      }
    }

    override def onDisconnect(node: Node) {
      if (node == this.node) {
        disconnectComponents()
      }
    }

    override def tier = Server.this.tier

    var containerOverride: ItemStack = _

    override def container = if (containerOverride != null) containerOverride else rack.getStackInSlot(number)

    override def node() = machine.node

    override def onMessage(message: Message) {}

    override def host = rack

    // Resolves conflict between ComponentInventory and ServerInventory.
    override def getInventoryStackLimit = 1
  }

}