package net.minecraft.util.datafix.fixes;

import com.mojang.datafixers.DSL;
import com.mojang.datafixers.DataFix;
import com.mojang.datafixers.OpticFinder;
import com.mojang.datafixers.TypeRewriteRule;
import com.mojang.datafixers.schemas.Schema;
import com.mojang.datafixers.types.Type;
import com.mojang.serialization.Dynamic;
import java.util.Objects;

public class ChunkStatusFix extends DataFix {
	public ChunkStatusFix(final Schema schema, final boolean changesType) {
		super(schema, changesType);
	}

	@Override
	protected TypeRewriteRule makeRule() {
		Type<?> chunkType = this.getInputSchema().getType(References.CHUNK);
		Type<?> levelType = chunkType.findFieldType("Level");
		OpticFinder<?> levelF = DSL.fieldFinder("Level", levelType);
		return this.fixTypeEverywhereTyped(
			"ChunkStatusFix", chunkType, this.getOutputSchema().getType(References.CHUNK), input -> input.updateTyped(levelF, level -> {
				Dynamic<?> tag = level.get(DSL.remainderFinder());
				String status = tag.get("Status").asString("empty");
				if (Objects.equals(status, "postprocessed")) {
					tag = tag.set("Status", tag.createString("fullchunk"));
				}

				return level.set(DSL.remainderFinder(), tag);
			})
		);
	}
}