1 files changed, 46 insertions, 0 deletions
diff --git a/lib/gitlab/email/failure_handler.rb b/lib/gitlab/email/failure_handler.rb
new file mode 100644
index 00000000000..1079a9c2bb6
--- /dev/null
+++ b/lib/gitlab/email/failure_handler.rb
@@ -0,0 +1,46 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Email
+    module FailureHandler
+      def self.handle(receiver, error)
+        can_retry = false
+        reason =
+          case error
+          when Gitlab::Email::UnknownIncomingEmail
+            s_("EmailError|We couldn't figure out what the email is for. Please create your issue or comment through the web interface.")
+          when Gitlab::Email::SentNotificationNotFoundError
+            s_("EmailError|We couldn't figure out what the email is in reply to. Please create your comment through the web interface.")
+          when Gitlab::Email::ProjectNotFound
+            s_("EmailError|We couldn't find the project. Please check if there's any typo.")
+          when Gitlab::Email::EmptyEmailError
+            can_retry = true
+            s_("EmailError|It appears that the email is blank. Make sure your reply is at the top of the email, we can't process inline replies.")
+          when Gitlab::Email::UserNotFoundError
+            s_("EmailError|We couldn't figure out what user corresponds to the email. Please create your comment through the web interface.")
+          when Gitlab::Email::UserBlockedError
+            s_("EmailError|Your account has been blocked. If you believe this is in error, contact a staff member.")
+          when Gitlab::Email::UserNotAuthorizedError
+            s_("EmailError|You are not allowed to perform this action. If you believe this is in error, contact a staff member.")
+          when Gitlab::Email::NoteableNotFoundError
+            s_("EmailError|The thread you are replying to no longer exists, perhaps it was deleted? If you believe this is in error, contact a staff member.")
+          when Gitlab::Email::InvalidAttachment
+            error.message
+          when Gitlab::Email::InvalidRecordError
+            can_retry = true
+            error.message
+          when Gitlab::Email::EmailTooLarge
+            s_("EmailError|We couldn't process your email because it is too large. Please create your issue or comment through the web interface.")
+          end
+
+        if reason
+          receiver.mail.body = nil
+
+          EmailRejectionMailer.rejection(reason, receiver.mail.encoded, can_retry).deliver_later
+        end
+
+        reason
+      end
+    end
+  end
+end