<?php

namespace DeviceBundle\EventListener;

use Doctrine\ORM\Event\LifecycleEventArgs;
use DeviceBundle\Interfaces\DeviceInterface;
use WebserviceBundle\Services\Webservice;
use Buzz\Message\RequestInterface as HttpRequestInterface;

class DeviceListener
{

    /**
     * @var Webservice
     */
    private $webservice;

    /**
     * @var string
     */
    private $devicePostUrl;

    /**
     * @var string
     */
    private $deviceDeletePostUrl;
    
    /**
     * @var string
     */
    private $devicePutUrl;


    /**
     * @param Webservice $webservice
     * @param string $devicePostUrl
     * @param string $deviceDeletePostUrl
     */
    public function __construct(Webservice $webservice, $devicePostUrl, $deviceDeletePostUrl, $devicePutUrl)
    {
        $this->webservice = $webservice;
        $this->devicePostUrl = $devicePostUrl;
        $this->deviceDeletePostUrl = $deviceDeletePostUrl;
        $this->devicePutUrl = $devicePutUrl;
    }

    /**
     * @param LifecycleEventArgs $args
     */
    public function postPersist(LifecycleEventArgs $args)
    {
        $this->send($args, $this->devicePostUrl, HttpRequestInterface::METHOD_POST);
    }

    /**
     * @param LifecycleEventArgs $args
     */
    public function preRemove(LifecycleEventArgs $args)
    {
        $entity = $args->getEntity();
        if ($entity instanceof DeviceInterface) {
            if($deviceId = $this->getRemoteDeviceId($entity)) {

                $data = array('id' => $deviceId);
                return $this->webservice->makeGetRequest($this->deviceDeletePostUrl, HttpRequestInterface::METHOD_DELETE, $data);
            }
        }
    }
    
    /**
     * @param LifecycleEventArgs $args
     */
    public function postUpdate(LifecycleEventArgs $args)
    {
        $entity = $args->getEntity();
        if ($entity instanceof DeviceInterface) {
            if($deviceId = $this->getRemoteDeviceId($entity)) {
                $url = "{$this->devicePutUrl}{$deviceId}";
                $this->send($args, $url, HttpRequestInterface::METHOD_PUT);
            } else {
                $this->send($args, $this->devicePostUrl, HttpRequestInterface::METHOD_POST);
            }
        }

    }

    /**
     * @param LifecycleEventArgs $args
     * @param string $url
     * @param string $method
     */
    private function send(LifecycleEventArgs $args, $url, $method)
    {
        $entity = $args->getEntity();
        if ($entity instanceof DeviceInterface) {
            $data = $entity->getDeviceData();
            $data = $this->addLocationData($entity, $data);
            
            return $this->webservice->makeGetRequest($url, $method, $data);
        }
    }
    
    /**
     * Agrega la ubicación de $entity si implementa LocationInterface
     * 
     * @param Entity $entity
     * @param array $data
     * 
     * @return array
     */
    private function addLocationData($entity, $data)
    {
        $locationInterface = 'MapBundle\Entity\Interfaces\LocationInterface';
        if (interface_exists($locationInterface) && is_a($entity, $locationInterface)) {
            $extraData = json_decode($data['extraData'], true);
            $extraData['location'] = $entity->getLocation() ? $entity->getLocation()->getData() : array();
            $data['extraData'] = json_encode($extraData);
        }
        
        return $data;
    }

    /**
     * @param object $entity
     */
    private function getRemoteDeviceId($entity) 
    {
        $deviceId = $entity->getId();
        $deviceType = get_class($entity);
        $tenancyId = $entity->getTenancyId();
            

        $filters = array('deviceId'=>$deviceId,'deviceType'=>$deviceType,'tenancyId'=>$tenancyId);
        $data = $this->webservice->getData("device_post_url",$filters);

//        file_put_contents("/var/flowdat/error.log",json_encode($data));

        $deviceId = null;
        if(isset($data[0])) 
            $deviceId = $data[0]['id'];
        
        return $deviceId;
    }

}