/*
 * WorldEdit, a Minecraft world manipulation toolkit
 * Copyright (C) sk89q <http://www.sk89q.com>
 * Copyright (C) WorldEdit team and contributors
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

package com.sk89q.worldedit.bukkit;

import com.sk89q.worldedit.world.block.BlockType;
import com.sk89q.worldedit.world.registry.BlockCategoryRegistry;
import org.bukkit.Bukkit;
import org.bukkit.Material;
import org.bukkit.NamespacedKey;
import org.bukkit.Tag;

import java.util.HashSet;
import java.util.Set;
import java.util.stream.Collectors;

public class BukkitBlockCategoryRegistry implements BlockCategoryRegistry {

    private Set<BlockType> getFromBukkitTag(Tag<Material> tag) {
        return tag.getValues().stream().map(BukkitAdapter::asBlockType).collect(Collectors.toSet());
    }

    @Override
    public Set<BlockType> getCategorisedByName(String category) {
        String[] split = category.split(":");
        String namespace = split.length > 1 ? split[0] : "minecraft";
        String key = split.length > 1 ? split[1] : category;
        Tag<Material> tag = Bukkit.getTag(Tag.REGISTRY_BLOCKS, new NamespacedKey(namespace, key), Material.class);
        if (tag == null) {
            return new HashSet<>();
        }
        return getFromBukkitTag(tag);
    }

}