struct CompressionService {
  /**

   compress 'image' to 'maxSize' size

   - Parameter image:   The image to compress.
   - Parameter maxSize: The maximum size in MB to image.

   - Returns: A Data image with 'maxSize' applied.

   */
  static func compress(image: UIImage, maxSize: CGFloat) -> Data? {
    guard let imageSize = UIImageJPEGRepresentation(image, 1)?.count else { return nil }
    let compressionRate: CGFloat = (maxSize * 1024) / CGFloat(imageSize)

    return UIImageJPEGRepresentation(image, compressionRate)
  }
}