import net.minecraft.server.v1_16_R3.*;
import org.bukkit.craftbukkit.v1_16_R3.entity.CraftPlayer;
import org.bukkit.craftbukkit.v1_16_R3.event.CraftEventFactory;
import org.bukkit.craftbukkit.v1_16_R3.inventory.CraftItemStack;
import org.bukkit.entity.Player;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;

public class Wrapper1_16_R3 {

    private int getRealNextContainerId(Player player) {
        return toNMS(player).nextContainerCounter();
    }
    
    public int getNextContainerId(Object container) {
        return ((LecternContainer) container).getContainerId();
    }
    
    public void handleInventoryCloseEvent(Player player) {
        CraftEventFactory.handleInventoryCloseEvent(toNMS(player));
    }
    
    public void sendPacketOpenWindow(Player player, int containerId, String guiTitle) {
        toNMS(player).playerConnection.sendPacket(new PacketPlayOutOpenWindow(containerId, Containers.LECTERN, new ChatMessage(guiTitle)));
    }
    
    public void sendPacketCloseWindow(Player player, int containerId) {
        toNMS(player).playerConnection.sendPacket(new PacketPlayOutCloseWindow(containerId));
    }
    
    public void setActiveContainerDefault(Player player) {
        toNMS(player).activeContainer = toNMS(player).defaultContainer;
    }
    
    public void setActiveContainer(Player player, Object container) {
        toNMS(player).activeContainer = (Container) container;
    }
    
    public void addActiveContainerSlotListener(Object container, Player player) {
        ((Container) container).addSlotListener(toNMS(player));
    }

    public void setPage(Object container, int page) {
        ((ContainerLectern) container).a(0, page);
    }
    
    public Inventory toBukkitInventory(Object container) {
        return ((Container) container).getBukkitView().getTopInventory();
    }
    
    public LecternContainer newContainerLectern(Player player, ItemStack bookItem) {
        return new LecternContainer(player, bookItem);
    }
    
    private EntityPlayer toNMS(Player player) {
        return ((CraftPlayer) player).getHandle();
    }

    private class LecternContainer extends ContainerLectern {

        public LecternContainer(Player player, ItemStack bookItem) {
            super(getRealNextContainerId(player), toNMS(player).inventory);
            this.checkReachable = false;
            setItem(0, CraftItemStack.asNMSCopy(bookItem));
        }

        @Override
        public void b(EntityHuman entityhuman) {}

        @Override
        protected void a(EntityHuman entityhuman, World world, IInventory iinventory) {}

        public int getContainerId() {
            return windowId;
        }
    }
}