package net.minecraft.client.gui.components.debug;

import java.util.List;
import net.minecraft.SharedConstants;
import net.minecraft.client.Minecraft;
import net.minecraft.core.BlockPos;
import net.minecraft.core.Holder;
import net.minecraft.resources.Identifier;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.level.Level;
import net.minecraft.world.level.biome.Biome;
import net.minecraft.world.level.chunk.LevelChunk;
import org.jspecify.annotations.Nullable;

public class DebugEntryBiome implements DebugScreenEntry {
	private static final Identifier GROUP = Identifier.withDefaultNamespace("biome");

	@Override
	public void display(
		final DebugScreenDisplayer displayer,
		@Nullable final Level serverOrClientLevel,
		@Nullable final LevelChunk clientChunk,
		@Nullable final LevelChunk serverChunk
	) {
		Minecraft minecraft = Minecraft.getInstance();
		Entity entity = minecraft.getCameraEntity();
		if (entity != null && minecraft.level != null) {
			BlockPos feetPos = entity.blockPosition();
			if (minecraft.level.isInsideBuildHeight(feetPos.getY())) {
				if (SharedConstants.DEBUG_SHOW_SERVER_DEBUG_VALUES && serverOrClientLevel instanceof ServerLevel) {
					displayer.addToGroup(
						GROUP, List.of("Biome: " + printBiome(minecraft.level.getBiome(feetPos)), "Server Biome: " + printBiome(serverOrClientLevel.getBiome(feetPos)))
					);
				} else {
					displayer.addLine("Biome: " + printBiome(minecraft.level.getBiome(feetPos)));
				}
			}
		}
	}

	private static String printBiome(final Holder<Biome> biome) {
		return biome.unwrap().map(key -> key.identifier().toString(), l -> "[unregistered " + l + "]");
	}
}