<?php

namespace WorkflowBundle\EventListener;

use Doctrine\Common\EventSubscriber;
use Doctrine\ORM\Event\LifecycleEventArgs;
use WorkflowBundle\Utils\DoctrineEvents;
use WorkflowBundle\Utils\WorkFlowEntityClasses;
use OldSound\RabbitMqBundle\RabbitMq\Producer;

class DoctrineEventSubscriber implements EventSubscriber
{
    
    /**
     * @var Producer
     */
    private $producer;
    
    
    /**
     * @param Producer $producer
     */    
    public function __construct(Producer $producer)
    {
        $this->producer = $producer;
    }

    /**
     * @return array
     */
    public function getSubscribedEvents()
    {
        return DoctrineEvents::getConstants();
    }

    /**
     * @param LifecycleEventArgs $args
     */
    public function prePersist(LifecycleEventArgs $args)
    {
        $this->execute($args, DoctrineEvents::PRE_PERSIST);
    }

    /**
     * @param LifecycleEventArgs $args
     */
    public function postPersist(LifecycleEventArgs $args)
    {
        $this->execute($args, DoctrineEvents::POST_PERSIST);
    }

    /**
     * @param LifecycleEventArgs $args
     */
    public function preUpdate(LifecycleEventArgs $args)
    {
        $this->execute($args, DoctrineEvents::PRE_UPDATE);
    }

    /**
     * @param LifecycleEventArgs $args
     */
    public function postUpdate(LifecycleEventArgs $args)
    {
        $this->execute($args, DoctrineEvents::POST_UPDATE);
    }

    /**
     * @param LifecycleEventArgs $args
     */
    public function preRemove(LifecycleEventArgs $args)
    {
        $this->execute($args, DoctrineEvents::PRE_REMOVE);
    }

    /**
     * @param LifecycleEventArgs $args
     */
    public function postRemove(LifecycleEventArgs $args)
    {
        $this->execute($args, DoctrineEvents::POST_REMOVE);
    }

    /**
     * @param LifecycleEventArgs $args
     * @param string $eventName
     */
    public function execute(LifecycleEventArgs $args, $eventName = DoctrineEvents::PRE_PERSIST)
    {
        $entity = $args->getEntity();
        $entityManager = $args->getEntityManager();
        $entityClass = get_class($entity);
        
        // la $entity esta dentro de las entidades con workflow
        if (in_array($entityClass, WorkFlowEntityClasses::getConstants())) {
            $doctrine2WorkFlowActionRepository = $entityManager->getRepository('WorkflowBundle:Doctrine2WorkFlowAction');
            $doctrine2WorkFlowActions = $doctrine2WorkFlowActionRepository->findAllByEventAndEntityClass($eventName, $entityClass);
            foreach ($doctrine2WorkFlowActions as $doctrine2WorkFlowAction) {
                $actions = $doctrine2WorkFlowAction->getActions();
                foreach ($actions as $action) {
                    $msg = array(
                        'id' => uniqid(),
                        'cmd' => $action->getCmd($entity),
                    );
                    $this->producer->publish(serialize($msg));
                }
            }
        }
    }

}