package net.minecraft.util.datafix.fixes;

import com.mojang.datafixers.DSL;
import com.mojang.datafixers.DataFix;
import com.mojang.datafixers.TypeRewriteRule;
import com.mojang.datafixers.schemas.Schema;
import com.mojang.serialization.Dynamic;
import java.util.stream.IntStream;

public class WorldSpawnDataFix extends DataFix {
	public WorldSpawnDataFix(final Schema outputSchema) {
		super(outputSchema, false);
	}

	@Override
	protected TypeRewriteRule makeRule() {
		return this.fixTypeEverywhereTyped(
			"WorldSpawnDataFix",
			this.getInputSchema().getType(References.LEVEL),
			input -> input.update(
				DSL.remainderFinder(),
				tag -> {
					int spawnX = tag.get("SpawnX").asInt(0);
					int spawnY = tag.get("SpawnY").asInt(0);
					int spawnZ = tag.get("SpawnZ").asInt(0);
					float angle = tag.get("SpawnAngle").asFloat(0.0F);
					Dynamic<?> spawnData = tag.emptyMap()
						.set("dimension", tag.createString("minecraft:overworld"))
						.set("pos", tag.createIntList(IntStream.of(new int[]{spawnX, spawnY, spawnZ})))
						.set("yaw", tag.createFloat(angle))
						.set("pitch", tag.createFloat(0.0F));
					tag = tag.remove("SpawnX").remove("SpawnY").remove("SpawnZ").remove("SpawnAngle");
					return tag.set("spawn", spawnData);
				}
			)
		);
	}
}