Unicopia/src/main/java/com/minelittlepony/unicopia/item/DrinkableItem.java

package com.minelittlepony.unicopia.item;

import com.minelittlepony.unicopia.item.toxin.ToxicHolder;

import net.minecraft.advancement.criterion.Criteria;
import net.minecraft.entity.LivingEntity;
import net.minecraft.entity.player.PlayerEntity;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.server.network.ServerPlayerEntity;
import net.minecraft.stat.Stats;
import net.minecraft.util.UseAction;
import net.minecraft.world.World;

public class DrinkableItem extends Item {
    public DrinkableItem(Item.Settings settings) {
        super(settings);
    }

    @Override
    public ItemStack finishUsing(ItemStack stack, World world, LivingEntity user) {
        if (user instanceof ServerPlayerEntity) {
            ServerPlayerEntity serverPlayerEntity = (ServerPlayerEntity)user;
            Criteria.CONSUME_ITEM.trigger(serverPlayerEntity, stack);
            serverPlayerEntity.incrementStat(Stats.USED.getOrCreateStat(this));
        }

        if (user instanceof PlayerEntity && !((PlayerEntity)user).getAbilities().creativeMode) {
            stack.decrement(1);
        }

        ((ToxicHolder)this).getToxic().ifPresent(t -> t.finishUsing(stack, world, user));

        return stack.isEmpty() ? new ItemStack(getRecipeRemainder()) : stack;
    }

    @Override
    public UseAction getUseAction(ItemStack stack) {
        return UseAction.DRINK;
    }
}