package net.minecraft.world.entity.monster.hoglin;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.mojang.datafixers.util.Pair;
import java.util.List;
import java.util.Optional;
import net.minecraft.core.BlockPos;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.sounds.SoundEvent;
import net.minecraft.sounds.SoundEvents;
import net.minecraft.util.TimeUtil;
import net.minecraft.util.valueproviders.UniformInt;
import net.minecraft.world.entity.AgeableMob;
import net.minecraft.world.entity.EntityType;
import net.minecraft.world.entity.LivingEntity;
import net.minecraft.world.entity.PathfinderMob;
import net.minecraft.world.entity.ai.Brain;
import net.minecraft.world.entity.ai.behavior.AnimalMakeLove;
import net.minecraft.world.entity.ai.behavior.BabyFollowAdult;
import net.minecraft.world.entity.ai.behavior.BecomePassiveIfMemoryPresent;
import net.minecraft.world.entity.ai.behavior.BehaviorUtils;
import net.minecraft.world.entity.ai.behavior.DoNothing;
import net.minecraft.world.entity.ai.behavior.EraseMemoryIf;
import net.minecraft.world.entity.ai.behavior.LookAtTargetSink;
import net.minecraft.world.entity.ai.behavior.MeleeAttack;
import net.minecraft.world.entity.ai.behavior.MoveToTargetSink;
import net.minecraft.world.entity.ai.behavior.RandomStroll;
import net.minecraft.world.entity.ai.behavior.RunOne;
import net.minecraft.world.entity.ai.behavior.SetEntityLookTargetSometimes;
import net.minecraft.world.entity.ai.behavior.SetWalkTargetAwayFrom;
import net.minecraft.world.entity.ai.behavior.SetWalkTargetFromAttackTargetIfTargetOutOfReach;
import net.minecraft.world.entity.ai.behavior.SetWalkTargetFromLookTarget;
import net.minecraft.world.entity.ai.behavior.StartAttacking;
import net.minecraft.world.entity.ai.behavior.StopAttackingIfTargetInvalid;
import net.minecraft.world.entity.ai.behavior.declarative.BehaviorBuilder;
import net.minecraft.world.entity.ai.memory.MemoryModuleType;
import net.minecraft.world.entity.ai.sensing.Sensor;
import net.minecraft.world.entity.schedule.Activity;

public class HoglinAi {
    public static final int REPELLENT_DETECTION_RANGE_HORIZONTAL = 8;
    public static final int REPELLENT_DETECTION_RANGE_VERTICAL = 4;
    private static final UniformInt RETREAT_DURATION = TimeUtil.rangeOfSeconds(5, 20);
    private static final int ATTACK_DURATION = 200;
    private static final int DESIRED_DISTANCE_FROM_PIGLIN_WHEN_IDLING = 8;
    private static final int DESIRED_DISTANCE_FROM_PIGLIN_WHEN_RETREATING = 15;
    private static final int ATTACK_INTERVAL = 40;
    private static final int BABY_ATTACK_INTERVAL = 15;
    private static final int REPELLENT_PACIFY_TIME = 200;
    private static final UniformInt ADULT_FOLLOW_RANGE = UniformInt.of(5, 16);
    private static final float SPEED_MULTIPLIER_WHEN_AVOIDING_REPELLENT = 1.0F;
    private static final float SPEED_MULTIPLIER_WHEN_RETREATING = 1.3F;
    private static final float SPEED_MULTIPLIER_WHEN_MAKING_LOVE = 0.6F;
    private static final float SPEED_MULTIPLIER_WHEN_IDLING = 0.4F;
    private static final float SPEED_MULTIPLIER_WHEN_FOLLOWING_ADULT = 0.6F;

    protected static Brain<?> makeBrain(Brain<Hoglin> p_34576_) {
        initCoreActivity(p_34576_);
        initIdleActivity(p_34576_);
        initFightActivity(p_34576_);
        initRetreatActivity(p_34576_);
        p_34576_.setCoreActivities(ImmutableSet.of(Activity.CORE));
        p_34576_.setDefaultActivity(Activity.IDLE);
        p_34576_.useDefaultActivity();
        return p_34576_;
    }

    private static void initCoreActivity(Brain<Hoglin> p_34592_) {
        p_34592_.addActivity(Activity.CORE, 0, ImmutableList.of(new LookAtTargetSink(45, 90), new MoveToTargetSink()));
    }

    private static void initIdleActivity(Brain<Hoglin> p_34602_) {
        p_34602_.addActivity(
            Activity.IDLE,
            10,
            ImmutableList.of(
                BecomePassiveIfMemoryPresent.create(MemoryModuleType.NEAREST_REPELLENT, 200),
                new AnimalMakeLove(EntityType.HOGLIN, 0.6F, 2),
                SetWalkTargetAwayFrom.pos(MemoryModuleType.NEAREST_REPELLENT, 1.0F, 8, true),
                StartAttacking.create(HoglinAi::findNearestValidAttackTarget),
                BehaviorBuilder.triggerIf(Hoglin::isAdult, SetWalkTargetAwayFrom.entity(MemoryModuleType.NEAREST_VISIBLE_ADULT_PIGLIN, 0.4F, 8, false)),
                SetEntityLookTargetSometimes.create(8.0F, UniformInt.of(30, 60)),
                BabyFollowAdult.create(ADULT_FOLLOW_RANGE, 0.6F),
                createIdleMovementBehaviors()
            )
        );
    }

    private static void initFightActivity(Brain<Hoglin> p_34609_) {
        p_34609_.addActivityAndRemoveMemoryWhenStopped(
            Activity.FIGHT,
            10,
            ImmutableList.of(
                BecomePassiveIfMemoryPresent.create(MemoryModuleType.NEAREST_REPELLENT, 200),
                new AnimalMakeLove(EntityType.HOGLIN, 0.6F, 2),
                SetWalkTargetFromAttackTargetIfTargetOutOfReach.create(1.0F),
                BehaviorBuilder.triggerIf(Hoglin::isAdult, MeleeAttack.create(40)),
                BehaviorBuilder.triggerIf(AgeableMob::isBaby, MeleeAttack.create(15)),
                StopAttackingIfTargetInvalid.create(),
                EraseMemoryIf.create(HoglinAi::isBreeding, MemoryModuleType.ATTACK_TARGET)
            ),
            MemoryModuleType.ATTACK_TARGET
        );
    }

    private static void initRetreatActivity(Brain<Hoglin> p_34616_) {
        p_34616_.addActivityAndRemoveMemoryWhenStopped(
            Activity.AVOID,
            10,
            ImmutableList.of(
                SetWalkTargetAwayFrom.entity(MemoryModuleType.AVOID_TARGET, 1.3F, 15, false),
                createIdleMovementBehaviors(),
                SetEntityLookTargetSometimes.create(8.0F, UniformInt.of(30, 60)),
                EraseMemoryIf.create(HoglinAi::wantsToStopFleeing, MemoryModuleType.AVOID_TARGET)
            ),
            MemoryModuleType.AVOID_TARGET
        );
    }

    private static RunOne<Hoglin> createIdleMovementBehaviors() {
        return new RunOne<>(
            ImmutableList.of(
                Pair.of(RandomStroll.stroll(0.4F), 2), Pair.of(SetWalkTargetFromLookTarget.create(0.4F, 3), 2), Pair.of(new DoNothing(30, 60), 1)
            )
        );
    }

    protected static void updateActivity(Hoglin p_34578_) {
        Brain<Hoglin> brain = p_34578_.getBrain();
        Activity activity = brain.getActiveNonCoreActivity().orElse(null);
        brain.setActiveActivityToFirstValid(ImmutableList.of(Activity.FIGHT, Activity.AVOID, Activity.IDLE));
        Activity activity1 = brain.getActiveNonCoreActivity().orElse(null);
        if (activity != activity1) {
            getSoundForCurrentActivity(p_34578_).ifPresent(p_34578_::makeSound);
        }

        p_34578_.setAggressive(brain.hasMemoryValue(MemoryModuleType.ATTACK_TARGET));
    }

    protected static void onHitTarget(Hoglin p_34580_, LivingEntity p_34581_) {
        if (!p_34580_.isBaby()) {
            if (p_34581_.getType() == EntityType.PIGLIN && piglinsOutnumberHoglins(p_34580_)) {
                setAvoidTarget(p_34580_, p_34581_);
                broadcastRetreat(p_34580_, p_34581_);
            } else {
                broadcastAttackTarget(p_34580_, p_34581_);
            }
        }
    }

    private static void broadcastRetreat(Hoglin p_34606_, LivingEntity p_34607_) {
        getVisibleAdultHoglins(p_34606_).forEach(p_34590_ -> retreatFromNearestTarget(p_34590_, p_34607_));
    }

    private static void retreatFromNearestTarget(Hoglin p_34613_, LivingEntity p_34614_) {
        Brain<Hoglin> brain = p_34613_.getBrain();
        LivingEntity $$2 = BehaviorUtils.getNearestTarget(p_34613_, brain.getMemory(MemoryModuleType.AVOID_TARGET), p_34614_);
        $$2 = BehaviorUtils.getNearestTarget(p_34613_, brain.getMemory(MemoryModuleType.ATTACK_TARGET), $$2);
        setAvoidTarget(p_34613_, $$2);
    }

    private static void setAvoidTarget(Hoglin p_34620_, LivingEntity p_34621_) {
        p_34620_.getBrain().eraseMemory(MemoryModuleType.ATTACK_TARGET);
        p_34620_.getBrain().eraseMemory(MemoryModuleType.WALK_TARGET);
        p_34620_.getBrain().setMemoryWithExpiry(MemoryModuleType.AVOID_TARGET, p_34621_, RETREAT_DURATION.sample(p_34620_.level().random));
    }

    private static Optional<? extends LivingEntity> findNearestValidAttackTarget(ServerLevel p_362473_, Hoglin p_34611_) {
        return !isPacified(p_34611_) && !isBreeding(p_34611_) ? p_34611_.getBrain().getMemory(MemoryModuleType.NEAREST_VISIBLE_ATTACKABLE_PLAYER) : Optional.empty();
    }

    static boolean isPosNearNearestRepellent(Hoglin p_34586_, BlockPos p_34587_) {
        Optional<BlockPos> optional = p_34586_.getBrain().getMemory(MemoryModuleType.NEAREST_REPELLENT);
        return optional.isPresent() && optional.get().closerThan(p_34587_, 8.0);
    }

    private static boolean wantsToStopFleeing(Hoglin p_34618_) {
        return p_34618_.isAdult() && !piglinsOutnumberHoglins(p_34618_);
    }

    private static boolean piglinsOutnumberHoglins(Hoglin p_34623_) {
        if (p_34623_.isBaby()) {
            return false;
        } else {
            int i = p_34623_.getBrain().getMemory(MemoryModuleType.VISIBLE_ADULT_PIGLIN_COUNT).orElse(0);
            int j = p_34623_.getBrain().getMemory(MemoryModuleType.VISIBLE_ADULT_HOGLIN_COUNT).orElse(0) + 1;
            return i > j;
        }
    }

    protected static void wasHurtBy(ServerLevel p_362834_, Hoglin p_34596_, LivingEntity p_34597_) {
        Brain<Hoglin> brain = p_34596_.getBrain();
        brain.eraseMemory(MemoryModuleType.PACIFIED);
        brain.eraseMemory(MemoryModuleType.BREED_TARGET);
        if (p_34596_.isBaby()) {
            retreatFromNearestTarget(p_34596_, p_34597_);
        } else {
            maybeRetaliate(p_362834_, p_34596_, p_34597_);
        }
    }

    private static void maybeRetaliate(ServerLevel p_362858_, Hoglin p_34625_, LivingEntity p_34626_) {
        if (!p_34625_.getBrain().isActive(Activity.AVOID) || p_34626_.getType() != EntityType.PIGLIN) {
            if (p_34626_.getType() != EntityType.HOGLIN) {
                if (!BehaviorUtils.isOtherTargetMuchFurtherAwayThanCurrentAttackTarget(p_34625_, p_34626_, 4.0)) {
                    if (Sensor.isEntityAttackable(p_362858_, p_34625_, p_34626_)) {
                        setAttackTarget(p_34625_, p_34626_);
                        broadcastAttackTarget(p_34625_, p_34626_);
                    }
                }
            }
        }
    }

    private static void setAttackTarget(Hoglin p_34630_, LivingEntity p_34631_) {
        Brain<Hoglin> brain = p_34630_.getBrain();
        brain.eraseMemory(MemoryModuleType.CANT_REACH_WALK_TARGET_SINCE);
        brain.eraseMemory(MemoryModuleType.BREED_TARGET);
        brain.setMemoryWithExpiry(MemoryModuleType.ATTACK_TARGET, p_34631_, 200L);
    }

    private static void broadcastAttackTarget(Hoglin p_34635_, LivingEntity p_34636_) {
        getVisibleAdultHoglins(p_34635_).forEach(p_34574_ -> setAttackTargetIfCloserThanCurrent(p_34574_, p_34636_));
    }

    private static void setAttackTargetIfCloserThanCurrent(Hoglin p_34640_, LivingEntity p_34641_) {
        if (!isPacified(p_34640_)) {
            Optional<LivingEntity> optional = p_34640_.getBrain().getMemory(MemoryModuleType.ATTACK_TARGET);
            LivingEntity livingentity = BehaviorUtils.getNearestTarget(p_34640_, optional, p_34641_);
            setAttackTarget(p_34640_, livingentity);
        }
    }

    public static Optional<SoundEvent> getSoundForCurrentActivity(Hoglin p_34594_) {
        return p_34594_.getBrain().getActiveNonCoreActivity().map(p_34600_ -> getSoundForActivity(p_34594_, p_34600_));
    }

    private static SoundEvent getSoundForActivity(Hoglin p_34583_, Activity p_34584_) {
        if (p_34584_ == Activity.AVOID || p_34583_.isConverting()) {
            return SoundEvents.HOGLIN_RETREAT;
        } else if (p_34584_ == Activity.FIGHT) {
            return SoundEvents.HOGLIN_ANGRY;
        } else {
            return isNearRepellent(p_34583_) ? SoundEvents.HOGLIN_RETREAT : SoundEvents.HOGLIN_AMBIENT;
        }
    }

    private static List<Hoglin> getVisibleAdultHoglins(Hoglin p_34628_) {
        return p_34628_.getBrain().getMemory(MemoryModuleType.NEAREST_VISIBLE_ADULT_HOGLINS).orElse(ImmutableList.of());
    }

    private static boolean isNearRepellent(Hoglin p_34633_) {
        return p_34633_.getBrain().hasMemoryValue(MemoryModuleType.NEAREST_REPELLENT);
    }

    private static boolean isBreeding(Hoglin p_34638_) {
        return p_34638_.getBrain().hasMemoryValue(MemoryModuleType.BREED_TARGET);
    }

    protected static boolean isPacified(Hoglin p_34604_) {
        return p_34604_.getBrain().hasMemoryValue(MemoryModuleType.PACIFIED);
    }
}