Created a command to generate events from repeating events via cron.

Fixes #5

src/Hackspace/Bundle/CalciferBundle/Command/GenerateEventsCommand.php

@@ -0,0 +1,79 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: tim
+ * Date: 28.07.14
+ * Time: 22:19
+ */
+
+namespace Hackspace\Bundle\CalciferBundle\Command;
+
+
+use Hackspace\Bundle\CalciferBundle\Entity\Event;
+use Hackspace\Bundle\CalciferBundle\Entity\RepeatingEvent;
+use Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class GenerateEventsCommand extends ContainerAwareCommand
+{
+    protected function configure()
+    {
+        $this
+            ->setName('calcifer:events:generate')
+            ->setDescription('Generate events from repeating events')
+            ->addOption('duration', 'd', InputOption::VALUE_OPTIONAL, 'The duration you want to generate events into the future. Default is 2 monts','2 months')
+        ;
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $duration = \DateInterval::createFromDateString($input->getOption('duration'));
+        if ($duration instanceof \DateInterval) {
+            $now = new \DateTime();
+            $end = new \DateTime();
+            $end->add($duration);
+            $output->writeln(sprintf("Generating Dates from %s to %s",$now->format('Y-m-d'),$end->format('Y-m-d')));
+            $output->writeln("Fetching repeating events");
+            $entityManager = $this->getContainer()->get('doctrine')->getManager();
+            $repo = $entityManager->getRepository('CalciferBundle:RepeatingEvent');
+            $entities = $repo->findAll();
+            foreach($entities as $entity) {
+                /** @var RepeatingEvent $entity */
+                $period = new \DatePeriod($entity->nextdate,new \DateInterval($entity->repeating_pattern),$end);
+                foreach($period as $date) {
+                    /** @var \DateTime $date */
+                    $output->writeln(sprintf("Creating Event %s for %s",$entity->summary,$date->format('Y-m-d H:i')));
+                    $event = new Event();
+                    $event->location = $entity->location;
+                    $event->startdate = $date;
+                    if ($entity->duration > 0) {
+                        $duration = new \DateInterval("PT".$duration.'H');
+                        /** @var \DateTime $enddate */
+                        $enddate = clone $date;
+                        $enddate->add($duration);
+                        $entity->enddate = $enddate;
+                    }
+                    $event->summary = $entity->summary;
+                    $event->description = $entity->description;
+                    $event->url = $entity->url;
+                    $entityManager->persist($event);
+                    $entityManager->flush();
+                    $event->slug = \URLify::filter($event->id . '-' . $event->summary,255,'de');
+                    $entityManager->persist($event);
+                    $entityManager->flush();
+                    foreach($entity->getTags() as $tag) {
+                        $event->addTag($tag);
+                    }
+                    $entityManager->persist($event);
+                    $entityManager->flush();
+                }
+            }
+        } else {
+            $output->writeln('Invalid duration');
+        }
+
+    }
+}