接着上次的“laravel 黑”优化一下看起来舒服的代码

v2ex 大神多，我代码写的不好。但是这样写我感觉很舒服。让后期维护人员可能更加方便一些。尽可能的不给别人挖坑。培训班出来的人只要严格要求自己，也会把代码写好。对这段代码进行了简单的重构，方法还是这样，
  /**
    * @author  coffey
    *
    * 文档说明 3.x 版 https://www.easywechat.com/docs/3.x/zh-CN/server
    *
    * 微信初始化入口
    *
    * @return response
    */
   public function serve()
   {
       $app = $this->app;
       $server = $app->server;
       $server->setMessageHandler(function ($message) use ($app) {
           $openid = $message->FromUserName;
           $userService = $app->user;
           if (self::MSGTYPE_EVENT == $message->MsgType) {
               $eventKeys = explode('qrscene_', $message['EventKey']);
               $keyword = $eventKeys[1] ?? $message['EventKey'];
               $material = Material::where('custom_name', $keyword)->first();
               // 如果关注 注册用户信息
               $userInfo['openid'] = $openid;
               $user = $userService->get($userInfo['openid']);
               switch ($message->Event) {
                   case self::EVENT_SUBSCRIBE:
                       $this->sbuscribe($user, $material, $keyword);
                       break;
//                        取消关注事件
                   case self::EVENT_UNSBUSCRIBE:
                       return $this->unsbuscribe($userInfo);
                       break;
//                        扫码事件
                   case self::EVENT_SCAN:
                       $this->scan($material, $openid, $keyword);
                       break;
//                        其他事件
                   default:
                       return 'hello';
                       break;
               }
           } else {
               return '你在说什么';
           }
       });

       $response = $server->serve();

       return $response;
   }

   /**
    * @author  coffey
    *
    * 生成微信用户数据
    * @param $data
    * @return mixed
    */
   protected function generateWechatUserData($data)
   {
       $userInfo['openid'] = $data['openid'] ?? '';
       $userInfo['subscribe_time'] = $data['subscribe_time'] ?? '';
       $userInfo['unionid'] = $data['unionid'] ?? '';
       $userInfo['nickname'] = filterEmoji($data['nickname']) ?? '';
       $userInfo['avatar'] = $data['headimgurl'] ?? '';
       $userInfo['sex'] = $data['sex'] ?? '';
       $userInfo['province'] = $data['province'] ?? '';
       $userInfo['city'] = $data['city'] ?? '';
       $userInfo['country'] = $data['country'] ?? '';
       $userInfo['is_subscribe'] = 1;

       return $userInfo;
   }

   /**
    * @author  coffey
    *
    * 关注事件
    *
    * @param $wechatUser
    * @param Material|null $material
    * @param string        $keyword
    *
    * @return bool|void
    */
   protected function sbuscribe($wechatUser, Material $material = null, $keyword = '')
   {
//                        生成微信用户数据
       $userInfo = $this->generateWechatUserData($wechatUser);
//                        统一关注回复
       $this->wechatMessageService->sendText($wechatUser['openid'] ?? '', env('FOLLOW_WECHAT_WELCOME_MESSAGE', '欢迎关注答题通小学版的公众号！'));
       if (!empty($material)) {
           $userInfo['source'] = 2;
           $this->weixin_model->addDate($userInfo);
           $this->materialService->pushMessage($wechatUser['openid'] ?? '', $material);
       } else {
           $user_info['source'] = 3;
           $this->weixin_model->addDate($userInfo);
           $homework = Homework::query()->find($keyword);
           if (empty($homework)) {
               Log::error('该作业不存在---'.$keyword);

               return false;
           }
           $this->wechatMessageService->sendNewsItem($wechatUser['openid'] ?? '', $this->generateHomeworkData($homework));
           $this->materialService->sendScanHomeworkQrCode($wechatUser['openid'] ?? '');
       }
       $this->materialService->sendFollow($wechatUser['openid'] ?? '', $material);

       return;
   }

   /**
    * @author coffey
    *
    * 扫码事件
    *
    * @param Material|null $material
    * @param string        $openId
    * @param $keyword
    *
    * @return bool|void
    */
   protected function scan(Material $material = null, string $openId = '', $keyword)
   {
       //带参二维码中的数值
       if (!empty($material)) {
           $this->materialService->pushMessage($openId, $material);
       } else {
           $homework = Homework::query()->find($keyword);
           if (empty($homework)) {
               Log::error('该作业不存在---'.$keyword);

               return false;
           }
           $this->wechatMessageService->sendNewsItem($openId, $this->generateHomeworkData($homework));
           $this->materialService->sendScanHomeworkQrCode($openId);
       }

       return;
   }

   /**
    * @author  coffey
    *
    * 取消关注事件
    *
    * @param array $userInfo
    *
    * @return string
    */
   protected function unsbuscribe(array $userInfo = [])
   {
       $userInfo['is_subscribe'] = 0;
       $this->weixin_model->addDate($userInfo);

       return 'bye';
   }

   /**
    * @author  coffey
    *
    * 生成习题数据
    *
    * @param Homework $homework
    *
    * @return array
    */
   protected function generateHomeworkData(Homework $homework = null)
   {
       $title = $this->newsName($homework->term, $homework->grade_id, $homework->lesson);
       $url = $this->newsUrl($homework->homework_version_id, $homework->grade_id, $homework->day);

       return [
           'title' => $title,
           'url' => $url,
           'image' => getScheme('/640@320.png'),
       ];
   }
https://www.v2ex.com/t/493900