cf-service/app/Helper/RebateGiftItem/Manager.php

<?php

declare(strict_types=1);

namespace App\Helper\RebateGiftItem;

use App\Exception\BusinessException;

class Manager
{
    private function getGameItemClassMap() {
        return [
            11 => Game11::class,
            17 => Game17::class,
            21 => Game21::class,
        ];
    }

    public function getTypeItemsMap($baseGameId) {
        $gameItemClass = $this->getGameItemClassMap()[$baseGameId] ?: null;
        if (empty($gameItemClass)) {
            throw new BusinessException('GameItem类不存在');
        }
        $gameItem = new $gameItemClass();
        return $gameItem->getAllItems();
    }
}