<?php

namespace WorkflowBundle\Services;

use OldSound\RabbitMqBundle\RabbitMq\ConsumerInterface;
use PhpAmqpLib\Message\AMQPMessage;
use Symfony\Component\DependencyInjection\ContainerInterface;

class LogConsumer implements ConsumerInterface
{

    /**
     * @var ContainerInterface
     */
    protected $serviceContainer;


    /**
     * @param ContainerInterface $serviceContainer
     */
    public function __construct(ContainerInterface $serviceContainer)
    {
        $this->serviceContainer = $serviceContainer;
    }

    /**
     * $msg will be an instance of `PhpAmqpLib\Message\AMQPMessage` 
     * with the $msg->body being the data sent over RabbitMQ.
     * 
     * @param AMQPMessage $msg
     */
    public function execute(AMQPMessage $msg)
    {
        $message = '';
        $level = '';
        $channel = '';
        try {
            $msgBody = json_decode($msg->body, true);
            if (!json_last_error() && isset($msgBody['message']) && !empty($msgBody['message'])) {
                $message = $msgBody['message'];
                $level = $msgBody['level_name'];
                $channel = $msgBody['channel'];
            }
        } catch (\Exception $ex) {
            $message = $ex->getMessage();
        }
        
        $log = $this->createLog($message, $level, $channel);
        if (is_null($log)) {
            var_dump('Error: log no creado');
        } else {
            var_dump(sprintf("ID: %s Message: %s", $log->getId(), $log->getMessage()));
        }
                
        return;
    }
    
    /**
     * Crea una entidad Log y la persiste
     * 
     * @param string $message
     * 
     * @return \WorkflowBundle\Services\LogBundle\Entity\Log
     */
    private function createLog($message, $level, $channel)
    {
        $logClass = 'LogBundle\Entity\Log';
        if ($message && class_exists($logClass)) {
            $log = new $logClass();
            $log->setMessage($message);
            $log->setLevel($level);
            $log->setChannel($channel);

            $em = $this->serviceContainer->get('doctrine.orm.entity_manager');
            $validator = $this->serviceContainer->get('validator');
            if ($validator->validate($log)->count() == 0) {
                $em->persist($log);
                $em->flush($log);

                return $log;
            }
        }
        
        return null;
    }

}