class RetrySender
  MAX_BACKOFF_DURATION = 10
  STATUS_OK = '200'

  def initialize(max_retries, inner, sleeper, logger)
    @max_retries = max_retries
    @inner = inner
    @sleeper = sleeper
    @logger = logger
  end

  def send(request)
    response = @inner.send(request)

    (0..@max_retries-1).each { |i|
      if response.status_code == STATUS_OK
        break
      end

      backoff(i)

      response = @inner.send(request)
    }

  response
  end

  def backoff(attempt)
    backoff_duration = [attempt, MAX_BACKOFF_DURATION].min

    @logger.log("There was an error processing the request. Retrying in #{backoff_duration} seconds...")
    @sleeper.sleep(backoff_duration)
  end
end