package net.minecraft.world.entity.animal.armadillo;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.mojang.datafixers.util.Pair;
import java.util.List;
import java.util.Map;
import java.util.Set;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.sounds.SoundEvents;
import net.minecraft.tags.DamageTypeTags;
import net.minecraft.util.TimeUtil;
import net.minecraft.util.valueproviders.UniformInt;
import net.minecraft.world.entity.EntityTypes;
import net.minecraft.world.entity.Mob;
import net.minecraft.world.entity.ai.ActivityData;
import net.minecraft.world.entity.ai.behavior.AnimalMakeLove;
import net.minecraft.world.entity.ai.behavior.AnimalPanic;
import net.minecraft.world.entity.ai.behavior.BabyFollowAdult;
import net.minecraft.world.entity.ai.behavior.Behavior;
import net.minecraft.world.entity.ai.behavior.CountDownCooldownTicks;
import net.minecraft.world.entity.ai.behavior.DoNothing;
import net.minecraft.world.entity.ai.behavior.FollowTemptation;
import net.minecraft.world.entity.ai.behavior.LookAtTargetSink;
import net.minecraft.world.entity.ai.behavior.MoveToTargetSink;
import net.minecraft.world.entity.ai.behavior.OneShot;
import net.minecraft.world.entity.ai.behavior.RandomLookAround;
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.SetWalkTargetFromLookTarget;
import net.minecraft.world.entity.ai.behavior.Swim;
import net.minecraft.world.entity.ai.behavior.declarative.BehaviorBuilder;
import net.minecraft.world.entity.ai.memory.MemoryModuleType;
import net.minecraft.world.entity.ai.memory.MemoryStatus;
import net.minecraft.world.entity.schedule.Activity;

public class ArmadilloAi {
	private static final float SPEED_MULTIPLIER_WHEN_PANICKING = 2.0F;
	private static final float SPEED_MULTIPLIER_WHEN_IDLING = 1.0F;
	private static final float SPEED_MULTIPLIER_WHEN_TEMPTED = 1.25F;
	private static final float SPEED_MULTIPLIER_WHEN_FOLLOWING_ADULT = 1.25F;
	private static final float SPEED_MULTIPLIER_WHEN_MAKING_LOVE = 1.0F;
	private static final double DEFAULT_CLOSE_ENOUGH_DIST = 2.0;
	private static final double BABY_CLOSE_ENOUGH_DIST = 1.0;
	private static final UniformInt ADULT_FOLLOW_RANGE = UniformInt.of(5, 16);
	private static final OneShot<Armadillo> ARMADILLO_ROLLING_OUT = BehaviorBuilder.create(
		i -> i.group(i.absent(MemoryModuleType.DANGER_DETECTED_RECENTLY)).apply(i, location -> (level, body, timestamp) -> {
			if (body.isScared()) {
				body.rollOut();
				return true;
			} else {
				return false;
			}
		})
	);

	protected static List<ActivityData<Armadillo>> getActivities() {
		return List.of(initCoreActivity(), initIdleActivity(), initScaredActivity());
	}

	private static ActivityData<Armadillo> initCoreActivity() {
		return ActivityData.create(
			Activity.CORE,
			0,
			ImmutableList.of(
				new Swim<>(0.8F),
				new ArmadilloAi.ArmadilloPanic(2.0F),
				new LookAtTargetSink(45, 90),
				new MoveToTargetSink() {
					@Override
					protected boolean checkExtraStartConditions(final ServerLevel level, final Mob body) {
						return body instanceof Armadillo armadillo && armadillo.isScared() ? false : super.checkExtraStartConditions(level, body);
					}
				},
				new CountDownCooldownTicks(MemoryModuleType.TEMPTATION_COOLDOWN_TICKS),
				new CountDownCooldownTicks(MemoryModuleType.GAZE_COOLDOWN_TICKS),
				ARMADILLO_ROLLING_OUT
			)
		);
	}

	private static ActivityData<Armadillo> initIdleActivity() {
		return ActivityData.create(
			Activity.IDLE,
			ImmutableList.of(
				Pair.of(0, SetEntityLookTargetSometimes.create(EntityTypes.PLAYER, 6.0F, UniformInt.of(30, 60))),
				Pair.of(1, new AnimalMakeLove(EntityTypes.ARMADILLO, 1.0F, 1)),
				Pair.of(
					2,
					new RunOne<>(
						ImmutableList.of(
							Pair.of(new FollowTemptation(armadillo -> 1.25F, armadillo -> armadillo.isBaby() ? 1.0 : 2.0), 1),
							Pair.of(BabyFollowAdult.create(ADULT_FOLLOW_RANGE, 1.25F), 1)
						)
					)
				),
				Pair.of(3, new RandomLookAround(UniformInt.of(150, 250), 30.0F, 0.0F, 0.0F)),
				Pair.of(
					4,
					new RunOne<>(
						ImmutableMap.of(MemoryModuleType.WALK_TARGET, MemoryStatus.VALUE_ABSENT),
						ImmutableList.of(Pair.of(RandomStroll.stroll(1.0F), 1), Pair.of(SetWalkTargetFromLookTarget.create(1.0F, 3), 1), Pair.of(new DoNothing(30, 60), 1))
					)
				)
			)
		);
	}

	private static ActivityData<Armadillo> initScaredActivity() {
		return ActivityData.create(
			Activity.PANIC,
			ImmutableList.of(Pair.of(0, new ArmadilloAi.ArmadilloBallUp())),
			Set.of(Pair.of(MemoryModuleType.DANGER_DETECTED_RECENTLY, MemoryStatus.VALUE_PRESENT), Pair.of(MemoryModuleType.IS_PANICKING, MemoryStatus.VALUE_ABSENT))
		);
	}

	public static void updateActivity(final Armadillo body) {
		body.getBrain().setActiveActivityToFirstValid(ImmutableList.of(Activity.PANIC, Activity.IDLE));
	}

	public static class ArmadilloBallUp extends Behavior<Armadillo> {
		private static final int BALL_UP_STAY_IN_STATE = 5 * TimeUtil.SECONDS_PER_MINUTE * 20;
		private static final int TICKS_DELAY_TO_DETERMINE_IF_DANGER_IS_STILL_AROUND = 5;
		private static final int DANGER_DETECTED_RECENTLY_DANGER_THRESHOLD = 75;
		private int nextPeekTimer = 0;
		private boolean dangerWasAround;

		public ArmadilloBallUp() {
			super(Map.of(), BALL_UP_STAY_IN_STATE);
		}

		protected void tick(final ServerLevel level, final Armadillo body, final long timestamp) {
			super.tick(level, body, timestamp);
			if (this.nextPeekTimer > 0) {
				this.nextPeekTimer--;
			}

			if (body.shouldSwitchToScaredState()) {
				body.switchToState(Armadillo.ArmadilloState.SCARED);
				if (body.onGround()) {
					body.playSound(SoundEvents.ARMADILLO_LAND);
				}
			} else {
				Armadillo.ArmadilloState state = body.getState();
				long dangerTickCounter = body.getBrain().getTimeUntilExpiry(MemoryModuleType.DANGER_DETECTED_RECENTLY);
				boolean dangerIsAround = dangerTickCounter > 75L;
				if (dangerIsAround != this.dangerWasAround) {
					this.nextPeekTimer = this.pickNextPeekTimer(body);
				}

				this.dangerWasAround = dangerIsAround;
				if (state == Armadillo.ArmadilloState.SCARED) {
					if (this.nextPeekTimer == 0 && body.onGround() && dangerIsAround) {
						level.broadcastEntityEvent(body, (byte)64);
						this.nextPeekTimer = this.pickNextPeekTimer(body);
					}

					if (dangerTickCounter < Armadillo.ArmadilloState.UNROLLING.animationDuration()) {
						body.playSound(SoundEvents.ARMADILLO_UNROLL_START);
						body.switchToState(Armadillo.ArmadilloState.UNROLLING);
					}
				} else if (state == Armadillo.ArmadilloState.UNROLLING && dangerTickCounter > Armadillo.ArmadilloState.UNROLLING.animationDuration()) {
					body.switchToState(Armadillo.ArmadilloState.SCARED);
				}
			}
		}

		private int pickNextPeekTimer(final Armadillo body) {
			return Armadillo.ArmadilloState.SCARED.animationDuration() + body.getRandom().nextIntBetweenInclusive(100, 400);
		}

		protected boolean checkExtraStartConditions(final ServerLevel level, final Armadillo body) {
			return body.onGround();
		}

		protected boolean canStillUse(final ServerLevel level, final Armadillo body, final long timestamp) {
			return body.getState().isThreatened();
		}

		protected void start(final ServerLevel level, final Armadillo body, final long timestamp) {
			body.rollUp();
		}

		protected void stop(final ServerLevel level, final Armadillo body, final long timestamp) {
			if (!body.canStayRolledUp()) {
				body.rollOut();
			}
		}
	}

	public static class ArmadilloPanic extends AnimalPanic<Armadillo> {
		public ArmadilloPanic(final float speedMultiplier) {
			super(speedMultiplier, mob -> DamageTypeTags.PANIC_ENVIRONMENTAL_CAUSES);
		}

		protected void start(final ServerLevel level, final Armadillo armadillo, final long timestamp) {
			armadillo.rollOut();
			super.start(level, armadillo, timestamp);
		}
	}
}