package net.minecraft.world.level.block;

import com.mojang.serialization.MapCodec;
import java.util.Set;
import net.minecraft.core.BlockPos;
import net.minecraft.core.Direction;
import net.minecraft.core.particles.ParticleTypes;
import net.minecraft.resources.ResourceKey;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.server.level.ServerPlayer;
import net.minecraft.util.RandomSource;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.entity.InsideBlockEffectApplier;
import net.minecraft.world.entity.Relative;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.level.BlockGetter;
import net.minecraft.world.level.Level;
import net.minecraft.world.level.LevelReader;
import net.minecraft.world.level.block.entity.BlockEntity;
import net.minecraft.world.level.block.entity.TheEndPortalBlockEntity;
import net.minecraft.world.level.block.state.BlockBehaviour;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.level.levelgen.feature.EndPlatformFeature;
import net.minecraft.world.level.material.Fluid;
import net.minecraft.world.level.portal.TeleportTransition;
import net.minecraft.world.level.storage.LevelData;
import net.minecraft.world.phys.Vec3;
import net.minecraft.world.phys.shapes.CollisionContext;
import net.minecraft.world.phys.shapes.VoxelShape;
import org.jspecify.annotations.Nullable;

/**
 * Access widened by fabric-transitive-access-wideners-v1 to accessible
 */
public class EndPortalBlock extends BaseEntityBlock implements Portal {
	public static final MapCodec<EndPortalBlock> CODEC = simpleCodec(EndPortalBlock::new);
	private static final VoxelShape SHAPE = Block.column(16.0, 6.0, 12.0);

	@Override
	public MapCodec<EndPortalBlock> codec() {
		return CODEC;
	}

	/**
	 * Access widened by fabric-transitive-access-wideners-v1 to accessible
	 */
	public EndPortalBlock(final BlockBehaviour.Properties properties) {
		super(properties);
	}

	@Override
	public BlockEntity newBlockEntity(final BlockPos worldPosition, final BlockState blockState) {
		return new TheEndPortalBlockEntity(worldPosition, blockState);
	}

	@Override
	protected VoxelShape getShape(final BlockState state, final BlockGetter level, final BlockPos pos, final CollisionContext context) {
		return SHAPE;
	}

	@Override
	protected VoxelShape getEntityInsideCollisionShape(final BlockState state, final BlockGetter level, final BlockPos pos, final Entity entity) {
		return state.getShape(level, pos);
	}

	@Override
	protected void entityInside(
		final BlockState state, final Level level, final BlockPos pos, final Entity entity, final InsideBlockEffectApplier effectApplier, final boolean isPrecise
	) {
		if (entity.canUsePortal(false)) {
			if (!level.isClientSide() && level.dimension() == Level.END && entity instanceof ServerPlayer player && !player.seenCredits) {
				player.showEndCredits();
			} else {
				entity.setAsInsidePortal(this, pos);
			}
		}
	}

	@Nullable
	@Override
	public TeleportTransition getPortalDestination(final ServerLevel currentLevel, final Entity entity, final BlockPos portalEntryPos) {
		LevelData.RespawnData respawnData = currentLevel.getRespawnData();
		ResourceKey<Level> currentDimension = currentLevel.dimension();
		boolean fromEnd = currentDimension == Level.END;
		ResourceKey<Level> newDimension = fromEnd ? respawnData.dimension() : Level.END;
		BlockPos spawnBlockPos = fromEnd ? respawnData.pos() : ServerLevel.END_SPAWN_POINT;
		ServerLevel newLevel = currentLevel.getServer().getLevel(newDimension);
		if (newLevel == null) {
			return null;
		} else {
			Vec3 spawnPos = Vec3.atBottomCenterOf(spawnBlockPos);
			float yRot;
			float xRot;
			Set<Relative> relatives;
			if (!fromEnd) {
				EndPlatformFeature.createEndPlatform(newLevel, BlockPos.containing(spawnPos).below(), true);
				yRot = Direction.WEST.toYRot();
				xRot = 0.0F;
				relatives = Relative.union(Relative.DELTA, Set.of(Relative.X_ROT));
				if (entity instanceof ServerPlayer) {
					spawnPos = spawnPos.subtract(0.0, 1.0, 0.0);
				}
			} else {
				yRot = respawnData.yaw();
				xRot = respawnData.pitch();
				relatives = Relative.union(Relative.DELTA, Relative.ROTATION);
				if (entity instanceof ServerPlayer serverPlayer) {
					return serverPlayer.findRespawnPositionAndUseSpawnBlock(false, TeleportTransition.DO_NOTHING);
				}

				spawnPos = Vec3.atBottomCenterOf(entity.adjustSpawnLocation(newLevel, spawnBlockPos));
			}

			return new TeleportTransition(
				newLevel, spawnPos, Vec3.ZERO, yRot, xRot, relatives, TeleportTransition.PLAY_PORTAL_SOUND.then(TeleportTransition.PLACE_PORTAL_TICKET)
			);
		}
	}

	@Override
	public void animateTick(final BlockState state, final Level level, final BlockPos pos, final RandomSource random) {
		double x = pos.getX() + random.nextDouble();
		double y = pos.getY() + 0.8;
		double z = pos.getZ() + random.nextDouble();
		level.addParticle(ParticleTypes.SMOKE, x, y, z, 0.0, 0.0, 0.0);
	}

	@Override
	protected ItemStack getCloneItemStack(final LevelReader level, final BlockPos pos, final BlockState state, final boolean includeData) {
		return ItemStack.EMPTY;
	}

	@Override
	protected boolean canBeReplaced(final BlockState state, final Fluid fluid) {
		return false;
	}

	@Override
	protected RenderShape getRenderShape(final BlockState state) {
		return RenderShape.INVISIBLE;
	}
}