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path: root/app/workers/email_receiver_worker.rb
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# frozen_string_literal: true

class EmailReceiverWorker
  include ApplicationWorker

  def perform(raw)
    return unless Gitlab::IncomingEmail.enabled?

    begin
      Gitlab::Email::Receiver.new(raw).execute
    rescue => e
      handle_failure(raw, e)
    end
  end

  private

  def handle_failure(raw, error)
    Rails.logger.warn("Email can not be processed: #{error}\n\n#{raw}")

    return unless raw.present?

    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
      end

    if reason
      EmailRejectionMailer.rejection(reason, raw, can_retry).deliver_later
    end
  end
end