class ChefCLI::PolicyfileServices::CleanPolicies

def run
  revisions_to_remove = orphaned_policies
  if revisions_to_remove.empty?
    ui.err("No policy revisions deleted")
    return true
  end
  results = revisions_to_remove.map do |policy|
    [ remove_policy(policy), policy ]
  end
  failures = results.select { |result, _policy| result.is_a?(Exception) }
  unless failures.empty?
    details = failures.map do |result, policy|
      "- #{policy.policy_name} (#{policy.revision_id}): #{result.class} #{result}"
    end
    message = "Failed to delete some policy revisions:\n" + details.join("\n") + "\n"
    raise PolicyfileCleanError.new(message, MultipleErrors.new("multiple errors"))
  end
  true
end