如何从Firebase存储共享照片

Question

如何设置此代码以使用存储在Firebase存储中的图像创建社交媒体供稿

使用未解决的标识符“ Config”

   @IBAction func shareButton_TouchUpInside(_ sender: Any) {
            
                if let profileImg = self.selectedImage, let imageData = profileImg.jpegData(compressionQuality: 0.1) {
                    let photoIdString = NSUUID().uuidString
                    print(photoIdString)
                    let storageRef = Storage.storage().reference(forURL: Config.STORAGE_ROOF_REF).child("posts").child(photoIdString)
                    storageRef.put(imageData, metadata: nil, completion: { (metadata, error) in
                        if error != nil {
                            ProgressHUD.showError(error!.localizedDescription)
                            return
                        }
                        let photoUrl = metadata?.downloadURL()?.absoluteString
                        self.sendDataToDatabase(photoUrl: photoUrl!)
                    })
                } else {
                   
                }
            }