package net.minecraft.advancements.critereon;

import com.mojang.serialization.Codec;
import com.mojang.serialization.codecs.RecordCodecBuilder;
import java.util.Optional;
import net.minecraft.advancements.CriteriaTriggers;
import net.minecraft.advancements.Criterion;
import net.minecraft.server.level.ServerPlayer;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.level.storage.loot.LootContext;
import net.minecraft.world.phys.Vec3;

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

	public void trigger(ServerPlayer player, Entity projectile, Vec3 vector, int signalStrength) {
		LootContext lootContext = EntityPredicate.createContext(player, projectile);
		this.trigger(player, triggerInstance -> triggerInstance.matches(lootContext, vector, signalStrength));
	}

	public record TriggerInstance(Optional<ContextAwarePredicate> player, MinMaxBounds.Ints signalStrength, Optional<ContextAwarePredicate> projectile)
		implements SimpleCriterionTrigger.SimpleInstance {
		public static final Codec<TargetBlockTrigger.TriggerInstance> CODEC = RecordCodecBuilder.create(
			instance -> instance.group(
					EntityPredicate.ADVANCEMENT_CODEC.optionalFieldOf("player").forGetter(TargetBlockTrigger.TriggerInstance::player),
					MinMaxBounds.Ints.CODEC.optionalFieldOf("signal_strength", MinMaxBounds.Ints.ANY).forGetter(TargetBlockTrigger.TriggerInstance::signalStrength),
					EntityPredicate.ADVANCEMENT_CODEC.optionalFieldOf("projectile").forGetter(TargetBlockTrigger.TriggerInstance::projectile)
				)
				.apply(instance, TargetBlockTrigger.TriggerInstance::new)
		);

		public static Criterion<TargetBlockTrigger.TriggerInstance> targetHit(MinMaxBounds.Ints signalStrength, Optional<ContextAwarePredicate> projectile) {
			return CriteriaTriggers.TARGET_BLOCK_HIT.createCriterion(new TargetBlockTrigger.TriggerInstance(Optional.empty(), signalStrength, projectile));
		}

		public boolean matches(LootContext context, Vec3 vector, int signalStrength) {
			return !this.signalStrength.matches(signalStrength)
				? false
				: !this.projectile.isPresent() || ((ContextAwarePredicate)this.projectile.get()).matches(context);
		}

		@Override
		public void validate(CriterionValidator validator) {
			SimpleCriterionTrigger.SimpleInstance.super.validate(validator);
			validator.validateEntity(this.projectile, ".projectile");
		}
	}
}