gitlab-org--gitlab-foss/lib/gitlab/email/handler.rb

module Gitlab
  module Email
    class Handler
      attr_reader :mail, :mail_key

      def initialize(mail, mail_key)
        @mail = mail
        @mail_key = mail_key
      end

      def message
        @message ||= process_message
      end

      def author
        raise NotImplementedError
      end

      def project
        raise NotImplementedError
      end

      private
      def validate_permission!(permission)
        raise UserNotFoundError unless author
        raise UserBlockedError if author.blocked?
        raise ProjectNotFound unless author.can?(:read_project, project)
        raise UserNotAuthorizedError unless author.can?(permission, project)
      end

      def process_message
        add_attachments(ReplyParser.new(mail).execute.strip)
      end

      def add_attachments(reply)
        attachments = Email::AttachmentUploader.new(mail).execute(project)

        reply + attachments.map do |link|
          "\n\n#{link[:markdown]}"
        end.join
      end

      def verify_record(record, exception, error_title)
        return if record.persisted?

        msg = error_title + record.errors.full_messages.map do |error|
          "\n\n- #{error}"
        end.join

        raise exception, msg
      end
    end
  end
end