CloseInventory

package me.will.backpack.listeners;

import me.will.backpack.Backpack;
import me.will.backpack.utils.SerializationUtils;
import net.kyori.adventure.text.Component;
import org.bukkit.NamespacedKey;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.inventory.InventoryCloseEvent;
import org.bukkit.event.inventory.InventoryType;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.ItemMeta;
import org.bukkit.persistence.PersistentDataContainer;
import org.bukkit.persistence.PersistentDataType;
import org.jetbrains.annotations.NotNull;


public class CloseInventory implements Listener {

    @EventHandler
    public void onInventoryClose(@NotNull InventoryCloseEvent event) {

        if (event.getInventory().getType().equals(InventoryType.DISPENSER) && event.getView().title().equals(Component.text("Backpack"))){

            if (event.getPlayer().getEquipment().getItemInMainHand().getItemMeta().getPersistentDataContainer().has(new NamespacedKey(Backpack.getPlugin(), "backpack_id"), PersistentDataType.BYTE_ARRAY)) {

                byte[] serializedData = SerializationUtils.serializeInventory(event.getInventory());

                ItemStack heldItem = event.getPlayer().getEquipment().getItemInMainHand();
                ItemMeta itemMeta = heldItem.getItemMeta();
                PersistentDataContainer container = itemMeta.getPersistentDataContainer();


                assert serializedData != null;
                container.set(new NamespacedKey(Backpack.getPlugin(), "backpack_id"), PersistentDataType.BYTE_ARRAY, serializedData);
                heldItem.setItemMeta(itemMeta);


            }
        }
    }
}