package net.minecraft.world.entity.ai.sensing;

import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Lists;
import java.util.List;
import java.util.Optional;
import java.util.Set;
import net.minecraft.core.BlockPos;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.tags.BlockTags;
import net.minecraft.world.entity.LivingEntity;
import net.minecraft.world.entity.ai.Brain;
import net.minecraft.world.entity.ai.memory.MemoryModuleType;
import net.minecraft.world.entity.ai.memory.NearestVisibleLivingEntities;
import net.minecraft.world.entity.monster.hoglin.Hoglin;
import net.minecraft.world.entity.monster.piglin.Piglin;

public class HoglinSpecificSensor extends Sensor<Hoglin> {
	@Override
	public Set<MemoryModuleType<?>> requires() {
		return ImmutableSet.of(
			MemoryModuleType.NEAREST_VISIBLE_LIVING_ENTITIES,
			MemoryModuleType.NEAREST_REPELLENT,
			MemoryModuleType.NEAREST_VISIBLE_ADULT_PIGLIN,
			MemoryModuleType.NEAREST_VISIBLE_ADULT_HOGLINS,
			MemoryModuleType.VISIBLE_ADULT_PIGLIN_COUNT,
			MemoryModuleType.VISIBLE_ADULT_HOGLIN_COUNT
		);
	}

	protected void doTick(ServerLevel level, Hoglin entity) {
		Brain<?> brain = entity.getBrain();
		brain.setMemory(MemoryModuleType.NEAREST_REPELLENT, this.findNearestRepellent(level, entity));
		Optional<Piglin> optional = Optional.empty();
		int i = 0;
		List<Hoglin> list = Lists.<Hoglin>newArrayList();
		NearestVisibleLivingEntities nearestVisibleLivingEntities = (NearestVisibleLivingEntities)brain.getMemory(MemoryModuleType.NEAREST_VISIBLE_LIVING_ENTITIES)
			.orElse(NearestVisibleLivingEntities.empty());

		for (LivingEntity livingEntity : nearestVisibleLivingEntities.findAll(
			livingEntityx -> !livingEntityx.isBaby() && (livingEntityx instanceof Piglin || livingEntityx instanceof Hoglin)
		)) {
			if (livingEntity instanceof Piglin piglin) {
				i++;
				if (optional.isEmpty()) {
					optional = Optional.of(piglin);
				}
			}

			if (livingEntity instanceof Hoglin hoglin) {
				list.add(hoglin);
			}
		}

		brain.setMemory(MemoryModuleType.NEAREST_VISIBLE_ADULT_PIGLIN, optional);
		brain.setMemory(MemoryModuleType.NEAREST_VISIBLE_ADULT_HOGLINS, list);
		brain.setMemory(MemoryModuleType.VISIBLE_ADULT_PIGLIN_COUNT, i);
		brain.setMemory(MemoryModuleType.VISIBLE_ADULT_HOGLIN_COUNT, list.size());
	}

	private Optional<BlockPos> findNearestRepellent(ServerLevel level, Hoglin hoglin) {
		return BlockPos.findClosestMatch(hoglin.blockPosition(), 8, 4, blockPos -> level.getBlockState(blockPos).is(BlockTags.HOGLIN_REPELLENTS));
	}
}