1 files changed, 55 insertions, 0 deletions
diff --git a/lib/gitlab/email/handler/create_note_handler.rb b/lib/gitlab/email/handler/create_note_handler.rb
new file mode 100644
index 00000000000..06dae31cc27
--- /dev/null
+++ b/lib/gitlab/email/handler/create_note_handler.rb
@@ -0,0 +1,55 @@
+
+require 'gitlab/email/handler/base_handler'
+
+module Gitlab
+  module Email
+    module Handler
+      class CreateNoteHandler < BaseHandler
+        def can_handle?
+          mail_key =~ /\A\w+\z/
+        end
+
+        def execute
+          raise SentNotificationNotFoundError unless sent_notification
+          raise AutoGeneratedEmailError if mail.header.to_s =~ /auto-(generated|replied)/
+
+          validate_permission!(:create_note)
+
+          raise NoteableNotFoundError unless sent_notification.noteable
+          raise EmptyEmailError if message.blank?
+
+          verify_record!(
+            record: create_note,
+            invalid_exception: InvalidNoteError,
+            record_name: 'comment')
+        end
+
+        def author
+          sent_notification.recipient
+        end
+
+        def project
+          sent_notification.project
+        end
+
+        def sent_notification
+          @sent_notification ||= SentNotification.for(mail_key)
+        end
+
+        private
+
+        def create_note
+          Notes::CreateService.new(
+            project,
+            author,
+            note:           message,
+            noteable_type:  sent_notification.noteable_type,
+            noteable_id:    sent_notification.noteable_id,
+            commit_id:      sent_notification.commit_id,
+            line_code:      sent_notification.line_code
+          ).execute
+        end
+      end
+    end
+  end
+end