screen/application/api/controller/mall/OrderRefund.php

<?php

namespace app\api\controller\mall;

use app\common\controller\Api;
use app\common\model\Refund;
use app\common\service\RefundService;

/**
 * 订单退款
 * @inheritdoc
 */
class OrderRefund extends Api
{
    protected $noNeedRight = "*";

    /**
     * 退款退货配置
     * @ApiMethod (POST)
     * @ApiParams (name=order_info_id,description=退货子订单ID)
     * @ApiParams (name=num,description=退货数量)
     * @ApiParams (name=num_install,description=退货安装数量)
     * @ApiReturnParams (name=reason,description=退款原因选项)
     * @ApiReturnParams (name=type,description=退货方式选项)
     */
    public function config()
    {
        $info=[
            'reason'=>array_values(Refund::getReasons()),
            'type'=>array_values(Refund::getRefundBys()),
            'amount'=>0,
        ];
        $data=$this->_validate([
            'order_info_id'=>['require','integer'],
            'num'=>['require','integer','egt:0'],
            'num_install'=>['require','integer','egt:0'],
        ]);
        $orderInfo=$this->auth->getUser()->orderInfo()->find($data['order_info_id']);
        if($orderInfo){
            list($amount,$amount_install)=RefundService::setOrderInfo($orderInfo,$data['num'],$data['num_install'])->amount();
            $info['amount']=bcadd($amount,$amount_install);
        }

        $this->success('', $info);
    }
}