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.Typed;
import com.mojang.datafixers.schemas.Schema;
import com.mojang.datafixers.types.Type;
import com.mojang.datafixers.util.Pair;
import com.mojang.serialization.Dynamic;
import java.util.Optional;
import net.minecraft.util.datafix.schemas.NamespacedSchema;

public class ItemWaterPotionFix extends DataFix {
	public ItemWaterPotionFix(final Schema outputSchema, final boolean changesType) {
		super(outputSchema, changesType);
	}

	@Override
	public TypeRewriteRule makeRule() {
		Type<?> itemStackType = this.getInputSchema().getType(References.ITEM_STACK);
		OpticFinder<Pair<String, String>> idF = DSL.fieldFinder("id", DSL.named(References.ITEM_NAME.typeName(), NamespacedSchema.namespacedString()));
		OpticFinder<?> tagF = itemStackType.findField("tag");
		return this.fixTypeEverywhereTyped(
			"ItemWaterPotionFix",
			itemStackType,
			input -> {
				Optional<Pair<String, String>> idOpt = input.getOptional(idF);
				if (idOpt.isPresent()) {
					String id = (String)((Pair)idOpt.get()).getSecond();
					if ("minecraft:potion".equals(id)
						|| "minecraft:splash_potion".equals(id)
						|| "minecraft:lingering_potion".equals(id)
						|| "minecraft:tipped_arrow".equals(id)) {
						Typed<?> tag = input.getOrCreateTyped(tagF);
						Dynamic<?> tagRest = tag.get(DSL.remainderFinder());
						if (tagRest.get("Potion").asString().result().isEmpty()) {
							tagRest = tagRest.set("Potion", tagRest.createString("minecraft:water"));
						}

						return input.set(tagF, tag.set(DSL.remainderFinder(), tagRest));
					}
				}

				return input;
			}
		);
	}
}