/*
 * Minecraft Forge
 * Copyright (c) 2016-2019.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation version 2.1
 * of the License.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

package net.minecraftforge.common.crafting.conditions;

import com.google.gson.JsonObject;

import net.minecraft.item.Item;
import net.minecraft.tags.ItemTags;
import net.minecraft.tags.Tag;
import net.minecraft.util.JSONUtils;
import net.minecraft.util.ResourceLocation;

public class TagEmptyCondition implements ICondition
{
    private static final ResourceLocation NAME = new ResourceLocation("forge", "tag_empty");
    private final ResourceLocation tag_name;

    public TagEmptyCondition(String location)
    {
        this(new ResourceLocation(location));
    }

    public TagEmptyCondition(String namespace, String path)
    {
        this(new ResourceLocation(namespace, path));
    }

    public TagEmptyCondition(ResourceLocation tag)
    {
        this.tag_name = tag;
    }

    @Override
    public ResourceLocation getID()
    {
        return NAME;
    }

    @Override
    public boolean test()
    {
        Tag<Item> tag = ItemTags.getCollection().get(tag_name);
        return tag == null || tag.getAllElements().isEmpty();
    }

    @Override
    public String toString()
    {
        return "tag_empty(\"" + tag_name + "\")";
    }

    public static class Serializer implements IConditionSerializer<TagEmptyCondition>
    {
        public static final Serializer INSTANCE = new Serializer();

        @Override
        public void write(JsonObject json, TagEmptyCondition value)
        {
            json.addProperty("tag", value.tag_name.toString());
        }

        @Override
        public TagEmptyCondition read(JsonObject json)
        {
            return new TagEmptyCondition(new ResourceLocation(JSONUtils.getString(json, "tag")));
        }

        @Override
        public ResourceLocation getID()
        {
            return TagEmptyCondition.NAME;
        }
    }
}
