ItemTagToIdMap.php

<?php
 
/*
 *
 *  ____            _        _   __  __ _                  __  __ ____
 * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
 * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
 * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
 * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
 *
 * This program 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, either version 3 of the License, or
 * (at your option) any later version.
 *
 * @author PocketMine Team
 * @link http://www.pocketmine.net/
 *
 *
 */
 
declare(strict_types=1);
 
namespace pocketmine\data\bedrock;
 
use pocketmine\utils\AssumptionFailedError;
use pocketmine\utils\Filesystem;
use pocketmine\utils\SingletonTrait;
use pocketmine\utils\Utils;
use function array_keys;
use function gettype;
use function is_array;
use function is_string;
use function json_decode;
use const JSON_THROW_ON_ERROR;
 
final class ItemTagToIdMap{
    use SingletonTrait;
 
    private static function make() : self{
        $map = json_decode(Filesystem::fileGetContents(BedrockDataFiles::ITEM_TAGS_JSON), true, flags: JSON_THROW_ON_ERROR);
        if(!is_array($map)){
            throw new AssumptionFailedError("Invalid item tag map, expected array");
        }
        $cleanMap = [];
        foreach($map as $tagName => $ids){
            if(!is_string($tagName)){
                throw new AssumptionFailedError("Invalid item tag name $tagName, expected string as key");
            }
            if(!is_array($ids)){
                throw new AssumptionFailedError("Invalid item tag $tagName, expected array of IDs as value");
            }
            $cleanIds = [];
            foreach($ids as $id){
                if(!is_string($id)){
                    throw new AssumptionFailedError("Invalid item tag $tagName, expected string as ID, got " . gettype($id));
                }
                $cleanIds[] = $id;
            }
            $cleanMap[$tagName] = $cleanIds;
        }
 
        return new self($cleanMap);
    }
 
    private array $tagToIdsMap = [];
 
    public function __construct(
        array $tagToIds
    ){
        foreach(Utils::stringifyKeys($tagToIds) as $tag => $ids){
            foreach($ids as $id){
                $this->tagToIdsMap[$tag][$id] = true;
            }
        }
    }
 
    public function getIdsForTag(string $tag) : array{
        return array_keys($this->tagToIdsMap[$tag] ?? []);
    }
 
    public function tagContainsId(string $tag, string $id) : bool{
        return isset($this->tagToIdsMap[$tag][$id]);
    }
 
    public function addIdToTag(string $tag, string $id) : void{
        $this->tagToIdsMap[$tag][$id] = true;
    }
}