package net.minecraft.advancements.triggers;

import com.mojang.serialization.Codec;
import com.mojang.serialization.codecs.RecordCodecBuilder;
import java.util.Optional;
import net.minecraft.advancements.predicates.ContextAwarePredicate;
import net.minecraft.advancements.predicates.ItemPredicate;
import net.minecraft.advancements.predicates.entity.EntityPredicate;
import net.minecraft.server.level.ServerPlayer;
import net.minecraft.world.item.ItemInstance;
import net.minecraft.world.item.ItemStack;

public class UsingItemTrigger extends SimpleCriterionTrigger<UsingItemTrigger.TriggerInstance> {
	@Override
	public Codec<UsingItemTrigger.TriggerInstance> codec() {
		return UsingItemTrigger.TriggerInstance.CODEC;
	}

	public void trigger(final ServerPlayer player, final ItemStack item) {
		this.trigger(player, t -> t.matches(item));
	}

	public record TriggerInstance(Optional<ContextAwarePredicate> player, Optional<ItemPredicate> item) implements SimpleCriterionTrigger.SimpleInstance {
		public static final Codec<UsingItemTrigger.TriggerInstance> CODEC = RecordCodecBuilder.create(
			i -> i.group(
					EntityPredicate.ADVANCEMENT_CODEC.optionalFieldOf("player").forGetter(UsingItemTrigger.TriggerInstance::player),
					ItemPredicate.CODEC.optionalFieldOf("item").forGetter(UsingItemTrigger.TriggerInstance::item)
				)
				.apply(i, UsingItemTrigger.TriggerInstance::new)
		);

		public static Criterion<UsingItemTrigger.TriggerInstance> lookingAt(final EntityPredicate.Builder player, final ItemPredicate.Builder with) {
			return CriteriaTriggers.USING_ITEM
				.createCriterion(new UsingItemTrigger.TriggerInstance(Optional.of(EntityPredicate.wrap(player)), Optional.of(with.build())));
		}

		public boolean matches(final ItemStack item) {
			return !this.item.isPresent() || ((ItemPredicate)this.item.get()).test((ItemInstance)item);
		}
	}
}