package net.minecraft.world.entity;

import net.minecraft.core.Direction;
import net.minecraft.core.particles.ParticleTypes;
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.SoundEvents;
import net.minecraft.sounds.SoundSource;
import net.minecraft.world.damagesource.DamageSource;
import net.minecraft.world.entity.item.ItemEntity;
import net.minecraft.world.entity.projectile.Projectile;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.item.ProjectileItem;
import net.minecraft.world.level.Level;
import net.minecraft.world.level.gameevent.GameEvent;
import net.minecraft.world.level.material.PushReaction;
import net.minecraft.world.level.storage.ValueInput;
import net.minecraft.world.level.storage.ValueOutput;
import net.minecraft.world.phys.Vec3;

public class OminousItemSpawner extends Entity {
	private static final int SPAWN_ITEM_DELAY_MIN = 60;
	private static final int SPAWN_ITEM_DELAY_MAX = 120;
	private static final String TAG_SPAWN_ITEM_AFTER_TICKS = "spawn_item_after_ticks";
	private static final String TAG_ITEM = "item";
	private static final EntityDataAccessor<ItemStack> DATA_ITEM = SynchedEntityData.defineId(OminousItemSpawner.class, EntityDataSerializers.ITEM_STACK);
	public static final int TICKS_BEFORE_ABOUT_TO_SPAWN_SOUND = 36;
	private long spawnItemAfterTicks;

	public OminousItemSpawner(final EntityType<? extends OminousItemSpawner> type, final Level level) {
		super(type, level);
		this.noPhysics = true;
	}

	public static OminousItemSpawner create(final Level level, final ItemStack item) {
		OminousItemSpawner itemSpawner = new OminousItemSpawner(EntityTypes.OMINOUS_ITEM_SPAWNER, level);
		itemSpawner.spawnItemAfterTicks = level.getRandom().nextIntBetweenInclusive(60, 120);
		itemSpawner.setItem(item);
		return itemSpawner;
	}

	@Override
	public void tick() {
		super.tick();
		if (this.level() instanceof ServerLevel serverLevel) {
			this.tickServer(serverLevel);
		} else {
			this.tickClient();
		}
	}

	private void tickServer(final ServerLevel level) {
		if (this.tickCount == this.spawnItemAfterTicks - 36L) {
			level.playSound(null, this.blockPosition(), SoundEvents.TRIAL_SPAWNER_ABOUT_TO_SPAWN_ITEM, SoundSource.NEUTRAL);
		}

		if (this.tickCount >= this.spawnItemAfterTicks) {
			this.spawnItem();
			this.kill(level);
		}
	}

	private void tickClient() {
		if (this.level().getGameTime() % 5L == 0L) {
			this.addParticles();
		}
	}

	private void spawnItem() {
		if (this.level() instanceof ServerLevel level) {
			ItemStack item = this.getItem();
			if (!item.isEmpty()) {
				Entity spawnedEntity;
				if (item.getItem() instanceof ProjectileItem projectileItem) {
					spawnedEntity = this.spawnProjectile(level, projectileItem, item);
				} else {
					spawnedEntity = new ItemEntity(level, this.getX(), this.getY(), this.getZ(), item);
					level.addFreshEntity(spawnedEntity);
				}

				level.levelEvent(3021, this.blockPosition(), 1);
				level.gameEvent(spawnedEntity, GameEvent.ENTITY_PLACE, this.position());
				this.setItem(ItemStack.EMPTY);
			}
		}
	}

	private Entity spawnProjectile(final ServerLevel level, final ProjectileItem projectileItem, final ItemStack item) {
		ProjectileItem.DispenseConfig dispenseConfig = projectileItem.createDispenseConfig();
		dispenseConfig.overrideDispenseEvent().ifPresent(event -> level.levelEvent(event, this.blockPosition(), 0));
		Direction direction = Direction.DOWN;
		Projectile projectile = Projectile.spawnProjectileUsingShoot(
			projectileItem.asProjectile(level, this.position(), item, direction),
			level,
			item,
			direction.getStepX(),
			direction.getStepY(),
			direction.getStepZ(),
			dispenseConfig.power(),
			dispenseConfig.uncertainty()
		);
		projectile.setOwner(this);
		return projectile;
	}

	@Override
	protected void defineSynchedData(final SynchedEntityData.Builder entityData) {
		entityData.define(DATA_ITEM, ItemStack.EMPTY);
	}

	@Override
	protected void readAdditionalSaveData(final ValueInput input) {
		this.setItem((ItemStack)input.read("item", ItemStack.CODEC).orElse(ItemStack.EMPTY));
		this.spawnItemAfterTicks = input.getLongOr("spawn_item_after_ticks", 0L);
	}

	@Override
	protected void addAdditionalSaveData(final ValueOutput output) {
		if (!this.getItem().isEmpty()) {
			output.store("item", ItemStack.CODEC, this.getItem());
		}

		output.putLong("spawn_item_after_ticks", this.spawnItemAfterTicks);
	}

	@Override
	protected boolean canAddPassenger(final Entity passenger) {
		return false;
	}

	@Override
	protected boolean couldAcceptPassenger() {
		return false;
	}

	@Override
	protected void addPassenger(final Entity passenger) {
		throw new IllegalStateException("Should never addPassenger without checking couldAcceptPassenger()");
	}

	@Override
	public PushReaction getPistonPushReaction() {
		return PushReaction.IGNORE;
	}

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

	public void addParticles() {
		Vec3 flyTowards = this.position();
		int particleCount = this.random.nextIntBetweenInclusive(1, 3);

		for (int i = 0; i < particleCount; i++) {
			double radius = 0.4;
			Vec3 flyFrom = new Vec3(
				this.getX() + 0.4 * (this.random.nextGaussian() - this.random.nextGaussian()),
				this.getY() + 0.4 * (this.random.nextGaussian() - this.random.nextGaussian()),
				this.getZ() + 0.4 * (this.random.nextGaussian() - this.random.nextGaussian())
			);
			Vec3 randomDirection = flyTowards.vectorTo(flyFrom);
			this.level()
				.addParticle(ParticleTypes.OMINOUS_SPAWNING, flyTowards.x(), flyTowards.y(), flyTowards.z(), randomDirection.x(), randomDirection.y(), randomDirection.z());
		}
	}

	public ItemStack getItem() {
		return this.getEntityData().get(DATA_ITEM);
	}

	private void setItem(final ItemStack itemStack) {
		this.getEntityData().set(DATA_ITEM, itemStack);
	}

	@Override
	public final boolean hurtServer(final ServerLevel level, final DamageSource source, final float damage) {
		return false;
	}
}