Rake task to flog your rails commits for CI

flog.rake

namespace :ci do
  desc "Flog it"
  task :flog do
    max_score = 10.0
    changed_files = `git diff develop --name-only | grep "app/" | grep ".rb" | tr '\n' ' '`.split(' ')

    if changed_files.any?
      avg_score = `flog -g -s #{changed_files.join(' ')} | tail -n 1`

      score = avg_score.match( /(\d+\.\d+)/)[0].to_f

      if score > max_score
        puts `git diff develop --name-only | grep "app/" | grep ".rb" | tr '\n' ' ' | xargs flog -g`
        puts "Flog score (#{score}) exceeded max (#{max_score}). Clean up some code!"
        exit(1)
      end
    end
  end
end