package crazypants.enderio.machine.vacuum;

import java.awt.Point;
import java.util.List;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.inventory.Slot;
import net.minecraft.item.ItemStack;

import com.enderio.core.client.gui.widget.GhostBackgroundItemSlot;
import com.enderio.core.client.gui.widget.GhostSlot;
import com.enderio.core.common.ContainerEnder;

import crazypants.enderio.EnderIO;

public class ContainerVacuumChest extends ContainerEnder<TileVacuumChest> {

  private Slot filterSlot;
  private Runnable filterChangedCB;

  public ContainerVacuumChest(EntityPlayer player, InventoryPlayer inventory, final TileVacuumChest te) {
    super(inventory, te);
  }
  
  @Override
  protected void addSlots(InventoryPlayer playerInv) {
    filterSlot = new FilterSlot(new InventoryFilterUpgrade(getInv()));
    addSlotToContainer(filterSlot);

    int x = 8;
    int y = 18;
    int index = -1;
    for (int i = 0; i < TileVacuumChest.ITEM_ROWS; ++i) {
      for (int j = 0; j < 9; ++j) {
        addSlotToContainer(new Slot(getInv(), ++index, x + j * 18, y + i * 18));
      }
    }
  }
  
  public void createGhostSlots(List<GhostSlot> slots) {
    slots.add(new GhostBackgroundItemSlot(EnderIO.itemBasicFilterUpgrade, filterSlot));
  }

  @Override
  public Point getPlayerInventoryOffset() {
    Point p = super.getPlayerInventoryOffset();
    p.translate(0, 40);
    return p;
  }

  void setFilterChangedCB(Runnable filterChangedCB) {
    this.filterChangedCB = filterChangedCB;
  }

  void filterChanged() {
    if(filterChangedCB != null) {
      filterChangedCB.run();
    }
  }

  class FilterSlot extends Slot {
    InventoryFilterUpgrade inv;

    FilterSlot(InventoryFilterUpgrade inv) {
      super(inv, 0, 8, 86);
      this.inv = inv;
    }

    @Override
    public void onSlotChanged() {
      filterChanged();
    }

    @Override
    public boolean isItemValid(ItemStack stack) {
      return inv.isItemValidForSlot(0, stack);
    }
  }
}