package net.minecraft.util.datafix.fixes;

import com.mojang.datafixers.DSL;
import com.mojang.datafixers.DataFixUtils;
import com.mojang.datafixers.Typed;
import com.mojang.datafixers.schemas.Schema;
import com.mojang.serialization.Dynamic;

public class BlockEntityBannerColorFix extends NamedEntityFix {
	public BlockEntityBannerColorFix(final Schema outputSchema, final boolean changesType) {
		super(outputSchema, changesType, "BlockEntityBannerColorFix", References.BLOCK_ENTITY, "minecraft:banner");
	}

	public Dynamic<?> fixTag(Dynamic<?> input) {
		input = input.update("Base", base -> base.createInt(15 - base.asInt(0)));
		return input.update(
			"Patterns",
			list -> DataFixUtils.orElse(
				list.asStreamOpt()
					.map(stream -> stream.map(pattern -> pattern.update("Color", color -> color.createInt(15 - color.asInt(0)))))
					.map(list::createList)
					.result(),
				list
			)
		);
	}

	@Override
	protected Typed<?> fix(final Typed<?> entity) {
		return entity.update(DSL.remainderFinder(), this::fixTag);
	}
}