namespace :devise_guests do
  # task to clean out old guest users
  # rake devise_guests:delete_old_guest_users[days_old]
  # example cron entry to delete users older than 7 days at 2:00 AM every day: 
  # 0 2 * * * cd /path/to/your/app && /path/to/rake devise_guests:delete_old_guest_users[7] RAILS_ENV=your_env
  desc "Removes entries in the users table for guest users that are older than the number of days given."
  task :delete_old_guest_users, [:days_old] => [:environment] do |t, args|
    args.with_defaults(:days_old => 7)    
    User.where("guest = ? and updated_at < ?", true, Time.now - args[:days_old].to_i.days).each { |x| x.destroy }
  end

end