package net.minecraft.world.entity.animal;

import net.minecraft.core.BlockPos;
import net.minecraft.nbt.CompoundTag;
import net.minecraft.network.syncher.EntityDataAccessor;
import net.minecraft.network.syncher.EntityDataSerializers;
import net.minecraft.network.syncher.SynchedEntityData;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.sounds.SoundEvent;
import net.minecraft.sounds.SoundEvents;
import net.minecraft.sounds.SoundSource;
import net.minecraft.tags.BiomeTags;
import net.minecraft.util.Mth;
import net.minecraft.world.InteractionHand;
import net.minecraft.world.InteractionResult;
import net.minecraft.world.damagesource.DamageSource;
import net.minecraft.world.entity.EntityType;
import net.minecraft.world.entity.LivingEntity;
import net.minecraft.world.entity.Mob;
import net.minecraft.world.entity.Shearable;
import net.minecraft.world.entity.ai.attributes.Attributes;
import net.minecraft.world.entity.ai.attributes.AttributeSupplier.Builder;
import net.minecraft.world.entity.ai.goal.LookAtPlayerGoal;
import net.minecraft.world.entity.ai.goal.RandomLookAroundGoal;
import net.minecraft.world.entity.ai.goal.RangedAttackGoal;
import net.minecraft.world.entity.ai.goal.WaterAvoidingRandomStrollGoal;
import net.minecraft.world.entity.ai.goal.target.NearestAttackableTargetGoal;
import net.minecraft.world.entity.monster.Enemy;
import net.minecraft.world.entity.monster.RangedAttackMob;
import net.minecraft.world.entity.player.Player;
import net.minecraft.world.entity.projectile.Projectile;
import net.minecraft.world.entity.projectile.Snowball;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.item.Items;
import net.minecraft.world.level.GameRules;
import net.minecraft.world.level.Level;
import net.minecraft.world.level.block.Blocks;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.level.gameevent.GameEvent;
import net.minecraft.world.level.gameevent.GameEvent.Context;
import net.minecraft.world.level.storage.loot.BuiltInLootTables;
import net.minecraft.world.phys.Vec3;
import org.jetbrains.annotations.Nullable;

public class SnowGolem extends AbstractGolem implements Shearable, RangedAttackMob {
	private static final EntityDataAccessor<Byte> DATA_PUMPKIN_ID = SynchedEntityData.defineId(SnowGolem.class, EntityDataSerializers.BYTE);
	private static final byte PUMPKIN_FLAG = 16;
	private static final boolean DEFAULT_PUMPKIN = true;

	public SnowGolem(EntityType<? extends SnowGolem> entityType, Level level) {
		super(entityType, level);
	}

	@Override
	protected void registerGoals() {
		this.goalSelector.addGoal(1, new RangedAttackGoal(this, 1.25, 20, 10.0F));
		this.goalSelector.addGoal(2, new WaterAvoidingRandomStrollGoal(this, 1.0, 1.0000001E-5F));
		this.goalSelector.addGoal(3, new LookAtPlayerGoal(this, Player.class, 6.0F));
		this.goalSelector.addGoal(4, new RandomLookAroundGoal(this));
		this.targetSelector
			.addGoal(1, new NearestAttackableTargetGoal(this, Mob.class, 10, true, false, (livingEntity, serverLevel) -> livingEntity instanceof Enemy));
	}

	public static Builder createAttributes() {
		return Mob.createMobAttributes().add(Attributes.MAX_HEALTH, 4.0).add(Attributes.MOVEMENT_SPEED, 0.2F);
	}

	@Override
	protected void defineSynchedData(net.minecraft.network.syncher.SynchedEntityData.Builder builder) {
		super.defineSynchedData(builder);
		builder.define(DATA_PUMPKIN_ID, (byte)16);
	}

	@Override
	public void addAdditionalSaveData(CompoundTag tag) {
		super.addAdditionalSaveData(tag);
		tag.putBoolean("Pumpkin", this.hasPumpkin());
	}

	@Override
	public void readAdditionalSaveData(CompoundTag tag) {
		super.readAdditionalSaveData(tag);
		this.setPumpkin(tag.getBooleanOr("Pumpkin", true));
	}

	@Override
	public boolean isSensitiveToWater() {
		return true;
	}

	@Override
	public void aiStep() {
		super.aiStep();
		if (this.level() instanceof ServerLevel serverLevel) {
			if (this.level().getBiome(this.blockPosition()).is(BiomeTags.SNOW_GOLEM_MELTS)) {
				this.hurtServer(serverLevel, this.damageSources().onFire(), 1.0F);
			}

			if (!serverLevel.getGameRules().getBoolean(GameRules.RULE_MOBGRIEFING)) {
				return;
			}

			BlockState blockState = Blocks.SNOW.defaultBlockState();

			for (int i = 0; i < 4; i++) {
				int j = Mth.floor(this.getX() + (i % 2 * 2 - 1) * 0.25F);
				int k = Mth.floor(this.getY());
				int l = Mth.floor(this.getZ() + (i / 2 % 2 * 2 - 1) * 0.25F);
				BlockPos blockPos = new BlockPos(j, k, l);
				if (this.level().getBlockState(blockPos).isAir() && blockState.canSurvive(this.level(), blockPos)) {
					this.level().setBlockAndUpdate(blockPos, blockState);
					this.level().gameEvent(GameEvent.BLOCK_PLACE, blockPos, Context.of(this, blockState));
				}
			}
		}
	}

	@Override
	public void performRangedAttack(LivingEntity target, float velocity) {
		double d = target.getX() - this.getX();
		double e = target.getEyeY() - 1.1F;
		double f = target.getZ() - this.getZ();
		double g = Math.sqrt(d * d + f * f) * 0.2F;
		if (this.level() instanceof ServerLevel serverLevel) {
			ItemStack itemStack = new ItemStack(Items.SNOWBALL);
			Projectile.spawnProjectile(
				new Snowball(serverLevel, this, itemStack), serverLevel, itemStack, snowball -> snowball.shoot(d, e + g - snowball.getY(), f, 1.6F, 12.0F)
			);
		}

		this.playSound(SoundEvents.SNOW_GOLEM_SHOOT, 1.0F, 0.4F / (this.getRandom().nextFloat() * 0.4F + 0.8F));
	}

	@Override
	protected InteractionResult mobInteract(Player player, InteractionHand hand) {
		ItemStack itemStack = player.getItemInHand(hand);
		if (itemStack.is(Items.SHEARS) && this.readyForShearing()) {
			if (this.level() instanceof ServerLevel serverLevel) {
				this.shear(serverLevel, SoundSource.PLAYERS, itemStack);
				this.gameEvent(GameEvent.SHEAR, player);
				itemStack.hurtAndBreak(1, player, getSlotForHand(hand));
			}

			return InteractionResult.SUCCESS;
		} else {
			return InteractionResult.PASS;
		}
	}

	@Override
	public void shear(ServerLevel level, SoundSource soundSource, ItemStack shears) {
		level.playSound(null, this, SoundEvents.SNOW_GOLEM_SHEAR, soundSource, 1.0F, 1.0F);
		this.setPumpkin(false);
		this.dropFromShearingLootTable(
			level, BuiltInLootTables.SHEAR_SNOW_GOLEM, shears, (serverLevel, itemStack) -> this.spawnAtLocation(serverLevel, itemStack, this.getEyeHeight())
		);
	}

	@Override
	public boolean readyForShearing() {
		return this.isAlive() && this.hasPumpkin();
	}

	public boolean hasPumpkin() {
		return (this.entityData.get(DATA_PUMPKIN_ID) & 16) != 0;
	}

	public void setPumpkin(boolean pumpkinEquipped) {
		byte b = this.entityData.get(DATA_PUMPKIN_ID);
		if (pumpkinEquipped) {
			this.entityData.set(DATA_PUMPKIN_ID, (byte)(b | 16));
		} else {
			this.entityData.set(DATA_PUMPKIN_ID, (byte)(b & -17));
		}
	}

	@Nullable
	@Override
	protected SoundEvent getAmbientSound() {
		return SoundEvents.SNOW_GOLEM_AMBIENT;
	}

	@Nullable
	@Override
	protected SoundEvent getHurtSound(DamageSource damageSource) {
		return SoundEvents.SNOW_GOLEM_HURT;
	}

	@Nullable
	@Override
	protected SoundEvent getDeathSound() {
		return SoundEvents.SNOW_GOLEM_DEATH;
	}

	@Override
	public Vec3 getLeashOffset() {
		return new Vec3(0.0, 0.75F * this.getEyeHeight(), this.getBbWidth() * 0.4F);
	}
}