package net.minecraft.world.level.chunk;

import it.unimi.dsi.fastutil.longs.LongSet;
import java.io.IOException;
import java.util.function.BooleanSupplier;
import net.minecraft.world.level.ChunkPos;
import net.minecraft.world.level.chunk.status.ChunkStatus;
import net.minecraft.world.level.lighting.LevelLightEngine;
import org.jetbrains.annotations.Nullable;

public abstract class ChunkSource implements LightChunkGetter, AutoCloseable {
	@Nullable
	public LevelChunk getChunk(int chunkX, int chunkZ, boolean load) {
		return (LevelChunk)this.getChunk(chunkX, chunkZ, ChunkStatus.FULL, load);
	}

	@Nullable
	public LevelChunk getChunkNow(int chunkX, int chunkZ) {
		return this.getChunk(chunkX, chunkZ, false);
	}

	@Nullable
	@Override
	public LightChunk getChunkForLighting(int chunkX, int chunkZ) {
		return this.getChunk(chunkX, chunkZ, ChunkStatus.EMPTY, false);
	}

	/**
	 * @return {@code true} if a chunk is loaded at the provided position, without forcing a chunk load.
	 */
	public boolean hasChunk(int chunkX, int chunkZ) {
		return this.getChunk(chunkX, chunkZ, ChunkStatus.FULL, false) != null;
	}

	@Nullable
	public abstract ChunkAccess getChunk(int x, int z, ChunkStatus chunkStatus, boolean requireChunk);

	public abstract void tick(BooleanSupplier hasTimeLeft, boolean tickChunks);

	public void onSectionEmptinessChanged(int x, int y, int z, boolean isEmpty) {
	}

	/**
	 * @return A human-readable string representing data about this chunk source.
	 */
	public abstract String gatherStats();

	public abstract int getLoadedChunksCount();

	public void close() throws IOException {
	}

	public abstract LevelLightEngine getLightEngine();

	public void setSpawnSettings(boolean spawnSettings) {
	}

	public boolean updateChunkForced(ChunkPos chunkPos, boolean add) {
		return false;
	}

	public LongSet getForceLoadedChunks() {
		return LongSet.of();
	}
}