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.entity.EntityPredicate;
import net.minecraft.server.level.ServerPlayer;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.level.storage.loot.LootContext;
import net.minecraft.world.level.storage.loot.Validatable;
import net.minecraft.world.level.storage.loot.ValidationContextSource;

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

	public void trigger(final ServerPlayer player, final Entity entity) {
		LootContext context = EntityPredicate.createContext(player, entity);
		this.trigger(player, t -> t.matches(context));
	}

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

		public static Criterion<SummonedEntityTrigger.TriggerInstance> summonedEntity(final EntityPredicate.Builder predicate) {
			return CriteriaTriggers.SUMMONED_ENTITY
				.createCriterion(new SummonedEntityTrigger.TriggerInstance(Optional.empty(), Optional.of(EntityPredicate.wrap(predicate))));
		}

		public boolean matches(final LootContext entity) {
			return this.entity.isEmpty() || ((ContextAwarePredicate)this.entity.get()).matches(entity);
		}

		@Override
		public void validate(final ValidationContextSource validator) {
			SimpleCriterionTrigger.SimpleInstance.super.validate(validator);
			Validatable.validate(validator.entityContext(), "entity", this.entity);
		}
	}
}