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.datafixers.util.Pair;
import net.minecraft.util.datafix.LegacyComponentDataFixUtils;

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

	@Override
	public TypeRewriteRule makeRule() {
		Type<?> itemStackType = this.getInputSchema().getType(References.ITEM_STACK);
		Type<Pair<String, String>> textComponentType = (Type<Pair<String, String>>)this.getInputSchema().getType(References.TEXT_COMPONENT);
		OpticFinder<?> tagFinder = itemStackType.findField("tag");
		OpticFinder<?> displayFinder = tagFinder.type().findField("display");
		OpticFinder<?> customNameFinder = displayFinder.type().findField("Name");
		OpticFinder<Pair<String, String>> textComponentFinder = DSL.typeFinder(textComponentType);
		return this.fixTypeEverywhereTyped(
			"ItemCustomNameToComponentFix",
			itemStackType,
			itemStack -> itemStack.updateTyped(
				tagFinder,
				tag -> tag.updateTyped(
					displayFinder,
					display -> display.updateTyped(
						customNameFinder,
						customName -> customName.update(textComponentFinder, textComponent -> textComponent.mapSecond(LegacyComponentDataFixUtils::createTextComponentJson))
					)
				)
			)
		);
	}
}