public function execute(PhutilArgumentParser $args)
 {
     $console = PhutilConsole::getConsole();
     $viewer = $this->getViewer();
     $subscription_phid = $args->getArg('subscription');
     if (!$subscription_phid) {
         throw new PhutilArgumentUsageException(pht('Specify which subscription to invoice with %s.', '--subscription'));
     }
     $subscription = id(new PhortuneSubscriptionQuery())->setViewer($viewer)->withPHIDs(array($subscription_phid))->needTriggers(true)->executeOne();
     if (!$subscription) {
         throw new PhutilArgumentUsageException(pht('Unable to load subscription with PHID "%s".', $subscription_phid));
     }
     $now = $args->getArg('now');
     $now = $this->parseTimeArgument($now);
     if (!$now) {
         $now = PhabricatorTime::getNow();
     }
     $time_guard = PhabricatorTime::pushTime($now, date_default_timezone_get());
     $console->writeOut("%s\n", pht('Set current time to %s.', phabricator_datetime(PhabricatorTime::getNow(), $viewer)));
     $auto_range = $args->getArg('auto-range');
     $last_arg = $args->getArg('last');
     $next_arg = $args->getARg('next');
     if (!$auto_range && !$last_arg && !$next_arg) {
         throw new PhutilArgumentUsageException(pht('Specify a billing range with %s and %s, or use %s.', '--last', '--next', '--auto-range'));
     } else {
         if (!$auto_range & (!$last_arg || !$next_arg)) {
             throw new PhutilArgumentUsageException(pht('When specifying %s or %s, you must specify both arguments ' . 'to define the beginning and end of the billing range.', '--last', '--next'));
         } else {
             if (!$auto_range && ($last_arg && $next_arg)) {
                 $last_time = $this->parseTimeArgument($args->getArg('last'));
                 $next_time = $this->parseTimeArgument($args->getArg('next'));
             } else {
                 if ($auto_range && ($last_arg || $next_arg)) {
                     throw new PhutilArgumentUsageException(pht('Use either %s or %s and %s to specify the ' . 'billing range, but not both.', '--auto-range', '--last', '--next'));
                 } else {
                     $trigger = $subscription->getTrigger();
                     $event = $trigger->getEvent();
                     if (!$event) {
                         throw new PhutilArgumentUsageException(pht('Unable to calculate %s, this subscription has not been ' . 'scheduled for billing yet. Wait for the trigger daemon to ' . 'schedule the subscription.', '--auto-range'));
                     }
                     $last_time = $event->getLastEventEpoch();
                     $next_time = $event->getNextEventEpoch();
                 }
             }
         }
     }
     $console->writeOut("%s\n", pht('Preparing to invoice subscription "%s" from %s to %s.', $subscription->getSubscriptionName(), $last_time ? phabricator_datetime($last_time, $viewer) : pht('subscription creation'), phabricator_datetime($next_time, $viewer)));
     PhabricatorWorker::setRunAllTasksInProcess(true);
     if (!$args->getArg('force')) {
         $console->writeOut("**<bg:yellow> %s </bg>**\n%s\n", pht('WARNING'), phutil_console_wrap(pht('Manually invoicing will double bill payment accounts if the ' . 'range overlaps an existing or future invoice. This script is ' . 'intended for testing and development, and should not be part ' . 'of routine billing operations. If you continue, you may ' . 'incorrectly overcharge customers.')));
         if (!phutil_console_confirm(pht('Really invoice this subscription?'))) {
             throw new Exception(pht('Declining to invoice.'));
         }
     }
     PhabricatorWorker::scheduleTask('PhortuneSubscriptionWorker', array('subscriptionPHID' => $subscription->getPHID(), 'trigger.last-epoch' => $last_time, 'trigger.this-epoch' => $next_time, 'manual' => true), array('objectPHID' => $subscription->getPHID()));
     return 0;
 }