class Judges::Update

def summarize(fb, churn, errors, start, cycles)
  before = fb.query('(eq what "judges-summary")').each.to_a
  if before.empty?
    s = fb.insert
    s.what = 'judges-summary'
    s.when = Time.now
    s.version = Judges::VERSION
    s.seconds = Time.now - start
    s.cycles = cycles
    s.inserted = churn.inserted.size
    s.deleted = churn.deleted.size
    s.added = churn.added.size
  else
    s = before.first
    errs = s['errors']&.size || 0
    @loog.info(
      "A summary found, with #{errs.positive? || 'no'} error#{'s' if errs > 1 || errs.zero?}: " \
      "#{%w[when cycles version inserted deleted added].map { |a| "#{a}=#{s[a]&.first}" }.join(', ')}"
    )
  end
  if errors.empty?
    @loog.info('No errors added to the summary')
  else
    errors.each { |e| s.error = e }
    @loog.info("#{errors.size} error#{'s' if errors.size > 1} added to the summary")
  end
end