package net.shadowfacts.phycon.util

import net.minecraft.entity.player.PlayerEntity
import net.minecraft.inventory.Inventory
import net.minecraft.item.ItemStack
import net.minecraft.screen.slot.Slot

/**
 * @author shadowfacts
 */
class GhostSlot(inv: net.shadowfacts.phycon.util.GhostInv, x: Int, y: Int): Slot(GhostInv(inv), 0, x, y) {

	override fun canInsert(stack: ItemStack) = false

	override fun setStack(itemStack: ItemStack?) {
	}

	override fun canTakeItems(player: PlayerEntity) = false

	private class GhostInv(private val inv: net.shadowfacts.phycon.util.GhostInv): Inventory {
		override fun clear() {
			inv.ghostSlotStack = ItemStack.EMPTY
		}

		override fun size() = 1

		override fun isEmpty() = inv.ghostSlotStack.isEmpty

		override fun getStack(i: Int): ItemStack {
			return if (i == 0) inv.ghostSlotStack
			else ItemStack.EMPTY
		}

		override fun removeStack(i: Int, j: Int) = ItemStack.EMPTY

		override fun removeStack(i: Int) = ItemStack.EMPTY

		override fun setStack(i: Int, itemStack: ItemStack) {}

		override fun markDirty() {}

		override fun canPlayerUse(playerEntity: PlayerEntity?) = true
	}
}

interface GhostInv {
	var ghostSlotStack: ItemStack
}