@IBAction func cameraButton(_ sender: Any) {
        let imagePicker = UIImagePickerController()
        imagePicker.delegate = self

        let alertController = UIAlertController(title:nil, message: nil, preferredStyle:.actionSheet)
        let cancelAction = UIAlertAction(title: "Camera is not available", style: .cancel, handler: nil)
        alertController.addAction(cancelAction)

        if UIImagePickerController.isSourceTypeAvailable(.camera){
            let cameraAction = UIAlertAction(title:"Take Photo", style:.default, handler:{(_) in imagePicker.sourceType = .camera
                self.present(imagePicker, animated: true, completion: nil)

            })
            alertController.addAction(cameraAction)
        }

        present(alertController, animated: true, completion: nil)
    }