package net.minecraft.util.datafix.fixes;

import com.mojang.datafixers.DSL;
import com.mojang.datafixers.DataFix;
import com.mojang.datafixers.DataFixUtils;
import com.mojang.datafixers.TypeRewriteRule;
import com.mojang.datafixers.schemas.Schema;
import com.mojang.serialization.Dynamic;
import java.util.Optional;
import java.util.function.UnaryOperator;
import net.minecraft.util.datafix.schemas.NamespacedSchema;

public class RemapChunkStatusFix extends DataFix {
	private final String name;
	private final UnaryOperator<String> mapper;

	public RemapChunkStatusFix(final Schema schema, final String name, final UnaryOperator<String> mapper) {
		super(schema, false);
		this.name = name;
		this.mapper = mapper;
	}

	@Override
	protected TypeRewriteRule makeRule() {
		return this.fixTypeEverywhereTyped(
			this.name,
			this.getInputSchema().getType(References.CHUNK),
			input -> input.update(
				DSL.remainderFinder(),
				data -> data.update("Status", this::fixStatus)
					.update("below_zero_retrogen", belowZeroRetrogen -> belowZeroRetrogen.update("target_status", this::fixStatus))
			)
		);
	}

	private <T> Dynamic<T> fixStatus(final Dynamic<T> dynamic) {
		Optional<Dynamic<T>> remapped = dynamic.asString().result().map(NamespacedSchema::ensureNamespaced).map(this.mapper).map(dynamic::createString);
		return DataFixUtils.orElse(remapped, dynamic);
	}
}