CustomNPC-Plus/src/main/java/noppes/npcs/items/ItemLinked.java

package noppes.npcs.items;

import net.minecraft.entity.Entity;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.EntityPlayerMP;
import net.minecraft.item.ItemStack;
import net.minecraft.world.World;
import noppes.npcs.CustomNpcs;
import noppes.npcs.EventHooks;
import noppes.npcs.api.item.IItemStack;
import noppes.npcs.controllers.LinkedItemController;
import noppes.npcs.controllers.data.LinkedItem;
import noppes.npcs.scripted.NpcAPI;
import noppes.npcs.scripted.item.ScriptLinkedItem;

public class ItemLinked extends ItemCustomizable {

    public ItemLinked() {
        maxStackSize = 1;
        CustomNpcs.proxy.registerItem(this);
        setHasSubtypes(true);
    }

    @Override
    public void onUpdate(ItemStack stack, World world, Entity entity, int itemSlot, boolean isSelected) {
        if (world.isRemote)
            return;

        if(world.getTotalWorldTime() % 10 != 0)
            return;

        IItemStack itemStack = NpcAPI.Instance().getIItemStack(stack);
        if(itemStack instanceof ScriptLinkedItem){
            ScriptLinkedItem scriptLinkedItem = (ScriptLinkedItem) itemStack;
            LinkedItem linkedItem = LinkedItemController.getInstance().get(scriptLinkedItem.linkedItem.getId());
            int prevVersion = scriptLinkedItem.linkedVersion;
            if(linkedItem != null && scriptLinkedItem.linkedVersion != linkedItem.version){
                scriptLinkedItem.linkedItem = linkedItem.clone();
                scriptLinkedItem.linkedVersion = linkedItem.version;
                scriptLinkedItem.saveItemData();

                // Send Version Change Event
                EventHooks.onLinkedItemVersionChange(scriptLinkedItem, linkedItem.version, prevVersion);
            } else if (linkedItem == null){
                if (entity instanceof EntityPlayer) {
                    EntityPlayer player = (EntityPlayer) entity;
                    player.inventory.setInventorySlotContents(itemSlot, null); // Remove the item
                    player.inventory.markDirty(); // Ensure inventory updates

                    // Sync inventory with client
                    if (player instanceof EntityPlayerMP) {
                        ((EntityPlayerMP) player).sendContainerToPlayer(player.inventoryContainer);
                    }
                }
            }
        }
    }
}