lanzu_api_2021-12-26/app/Service/v3/Implementations/ShopCartUpdateService.php

<?php

namespace App\Service\v3\Implementations;

use App\Constants\v3\ErrorCode;
use App\Exception\ErrorCodeException;
use App\Service\v3\Interfaces\ShopCartUpdateServiceInterface;
use App\Model\v3\ShoppingCart;
use App\Model\v3\Goods;
use App\Model\v3\GoodsActivity;
use App\Constants\v3\Goods as GoodsConstants;
class ShopCartUpdateService implements ShopCartUpdateServiceInterface
{
    public function do($user_id,$goods_id,$num,$activity_type)
    {
		//判断是普通商品还是特价商品
        if(isset($params['activity']) && $params['activity'] == GoodsConstants::IS_ACTIVITY){
			$builder = GoodsActivity::query();
		}else{		
			$builder = Goods::query();
		}
		$goods = $builder->select('market_id','store_id')->find($goods_id);
        if(empty($goods)){
            throw new ErrorCodeException(ErrorCode::GOODS_NOT_EXISTS);
        }
        return ShoppingCart::query()->updateOrCreate(
				[
					'user_id' => $user_id,
					'goods_id' => $goods_id,
					'activity_type' => $activity_type
				],
				[
					'market_id' => $goods->market_id,
					'store_id' => $goods->store_id,
					'num' => $num	
				]
			);
    }

    public function check()
    {
        // TODO: Implement check() method.
    }

    public function undo($params)
    {
        return true;
    }

    /**
     * 清空购物车
     * @param $userId
     * @param $marketId
     */
    public function doClear($userId, $marketId)
    {

    }
}