class ActiveStorage::Service::S3Service

def initialize(bucket:, upload: {}, public: false, **options)
  @client = Aws::S3::Resource.new(**options)
  @bucket = @client.bucket(bucket)
  @multipart_upload_threshold = upload.delete(:multipart_threshold) || 100.megabytes
  @public = public
  @upload_options = upload
  @upload_options[:acl] = "public-read" if public?
end