An example of an integration using a Ruby DSL

integration.rb

event_bus.calendar.new_event do |event|
  # Schedule a task to be executed once the calendar event
  # has finished
  schedule_task(on: event.end_date) do |date|
    # Utility function that gets a Logger::Activity
    # object from the calendar event. It tries to
    # infer it based on the metada of the event
    activity = logger.activity(for: event)
    event.participants.each do |participant|
      slack_user = find_slack_user(email: participant.email)
      # Ask user through Slack if he or she participated in the event. Wait
      # for the response for two hours. Otherwise asume that the person went
      # to the event.
      slack_user.ask(message: "Did you go to #{event.title}?", wait_time: 2 * 60 * 60) do |participated|
        return unless participated
        # If the user participated in the event we log the event duration
        logger_entry = LoggerEntry.new(
          user: participant.email
          duration: event.duration
          activity: activity
        )
        # We notify the user through slack that the event has been logged
        logger.log(logger_entry) do
          slack_user.tell("#{duration / 60.0} hours have been logged to #{activity}")
        end
      end
    end
  end
end