refactor and fixes

lib/submitters.rb

@@ -11,4 +11,21 @@ module Submitters
       is_more_than_two_images && original_documents.find { |a| a.uuid == attachment.uuid }&.image?
     end
   end
+
+  def create_attachment!(submitter, params)
+    blob =
+      if (file = params[:file])
+        ActiveStorage::Blob.create_and_upload!(io: file.open,
+                                               filename: file.original_filename,
+                                               content_type: file.content_type)
+      else
+        ActiveStorage::Blob.find_signed(params[:blob_signed_id])
+      end
+
+    ActiveStorage::Attachment.create!(
+      blob:,
+      name: params[:name],
+      record: submitter
+    )
+  end
 end