<?php

namespace WebserviceBundle\Controller;

use ClientBundle\Form\ClientType;
use FOS\RestBundle\Controller\Annotations\QueryParam;
use FOS\RestBundle\Controller\Annotations\RouteResource;
use FOS\RestBundle\Controller\Annotations\View;
use FOS\RestBundle\Request\ParamFetcherInterface;
use FOS\RestBundle\Util\Codes;
use FOS\RestBundle\View\View as FOSView;
use ReflectionClass;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\ParamConverter;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\Form\Form;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Bundle\FrameworkBundle\Console\Application;
use Symfony\Component\Console\Input\ArgvInput;
use Symfony\Component\Console\Output\BufferedOutput;
use Voryx\RESTGeneratorBundle\Controller\VoryxController;

abstract class RESTController extends VoryxController
{
    /**
     * @return string Retorna el nombre de la Entity de trabajo.
     */
    abstract public function getRepository();

    /**
     * @return string Retorna el tipo de la clase.
     */
    abstract public function getFormEntityType();

    /**
     * Get all entities.
     *
     * @View(serializerEnableMaxDepthChecks=true)
     *
     * @param ParamFetcherInterface $paramFetcher
     *
     * @return Response
     *
     * @QueryParam(name="offset", requirements="\d+", nullable=true, description="Offset from which to start listing notes.")
     * @QueryParam(name="limit", requirements="\d+", default="20", description="How many notes to return.")
     * @QueryParam(name="order_by", nullable=true, array=true, description="Order by fields. Must be an array ie. &order_by[name]=ASC&order_by[description]=DESC")
     * @QueryParam(name="filters", nullable=true, array=true, description="Filter by fields. Must be an array ie. &filters[id]=3")
     * &filters[qb-criteria] => Utilizar� el matching con criteria donde los par�metros filters realizar�n "field like %value%".
     * &filters[qb-ids] => Require qb-criteria. This option filter by ids separated by ','. ie. &filters[qb-ids]=1,2,8,9.
     */
    public function cgetAction(ParamFetcherInterface $paramFetcher)
    {
        $em = $this->getDoctrine()->getManager();
        $disableTenancy = false;
        $filters = !is_null($paramFetcher->get('filters')) ? $paramFetcher->get('filters') : array();
        if (isset($filters['tenancyId'])) {
            // tengo que buscar por tenencia.
            $tenancyService = $this->getTenancyService();
            $tenancyService->setTenancy($filters['tenancyId']);
            unset($filters['tenancyId']);
        } else {
            $disableTenancy = true;
            // tengo que buscar por tenencia.
            $tenancyService = $this->getTenancyService();
            $tenancyService->disableFilter();
            // dejar esta linea para los casos en que no se modificaron las url de los otros modulos
            // que hacen referencia a este filtro
            unset($filters['disableTenancy']);
        }
        $orWhere = false;
        if (isset($filters['orWhere'])) {
            // cambia el and por or en la cosulta
            $orWhere = true;
            unset($filters['orWhere']);
        }
        if (isset($filters['qb-criteria'])) {
            try {
                unset($filters['qb-criteria']);
                $criteria = new \Doctrine\Common\Collections\Criteria();

                if(isset($filters['qb-ids'])) {
                    $criteria->where($criteria->expr()->in('id', explode(",",$filters["qb-ids"])));
                } else {
                    foreach ($filters as $field => $value) {
                        if ($orWhere) {
                            if (is_numeric($value) && $field != 'externalId') {
                                $criteria->orWhere($criteria->expr()->in("$field", (is_array($value) ? $value : [$value])));
                            } else {
                                $value = urldecode($value);
                                $criteria->orWhere($criteria->expr()->contains("$field", "$value"));
                            }
                        } else {
                            if (is_numeric($value) && $field != 'externalId') {
                                $criteria->andWhere($criteria->expr()->in("$field", (is_array($value) ? $value : [$value])));
                            } else {
                                $value = urldecode($value);
                                $criteria->andWhere($criteria->expr()->contains("$field", "$value"));
                            }
                        }
                    }

                    if (!is_null($paramFetcher->get('limit'))) {
                        $criteria->setMaxResults($paramFetcher->get('limit'));
                    }
                }

                if (!is_null($paramFetcher->get('offset'))) {
                    $criteria->setFirstResult($paramFetcher->get('offset'));
                }


                if ($paramFetcher->get('order_by')) {
                    $order_by = $paramFetcher->get('order_by');
                    $orderBy = array();
                    foreach ($order_by as $field => $order) {
                        $orderBy[$field] = $order;
                    }
                    $criteria->orderBy($orderBy);
                }

                $repo = $em->getRepository($this->getRepository());
                $entities = $repo->matching($criteria)->toArray();

                if ($disableTenancy) {
                    $tenancyService->enableFilter();
                }
                if ($entities) {
                    return $entities;
                }
            } catch (\Exception $e) {
                return FOSView::create($e->getMessage(), Codes::HTTP_INTERNAL_SERVER_ERROR);
            }
        } else {
            try {
                $offset = $paramFetcher->get('offset');
                $limit = $paramFetcher->get('limit');
                $order_by = $paramFetcher->get('order_by');
                $entities = $em->getRepository($this->getRepository())->findBy($filters, $order_by, $limit, $offset);
                if ($disableTenancy) {
                    $tenancyService->enableFilter();
                }
                if ($entities) {
                    return $entities;
                }
            } catch (\Exception $e) {
                return FOSView::create($e->getMessage(), Codes::HTTP_INTERNAL_SERVER_ERROR);
            }
        }
        return array();
    }

    /**
     * @return object Retorna el nombre de la Entity de trabajo.
     */
    public function getObjectNew($entity = null)
    {
        if ($entity == null) {
            $entity = $this->getRepository();
        }
        $obj = $this->getDoctrine()->getManager()->getMetadataFactory()->getMetadataFor($entity)->getName();
        $rc = new ReflectionClass($obj);
        return $rc->newInstance();
    }

    /**
     * @param string $entity Contiene el nombre de la entidad a buscar en el repositorio.
     * @param string $id Contiene el id a buscar.
     * @return object Retorna el nombre de la Entity de trabajo.
     */
    public function getObjectFindById($entity = null, $id)
    {
        if ($entity == null) {
            $entity = $this->getRepository();
        }
        return $this->getDoctrine()->getRepository($entity)->findOneBy(array('id' => $id));
    }

    /**
     * Funcion que busca el nombre de los campos que poseen error.
     * @param Form $form Contiene el formulario.
     * @return array Retorna un array con los nombre de los campos invalidos para el formulario.
     */
    private function getFormFieldError(Form $form)
    {
        $errorField = array();
        foreach ($form as $child) {
            if ($child->isSubmitted() && $child->isValid()) {
                continue;
            } else {
                $errorField[] = $child->getName();
            }

        }
    }

    /**
     * @return object Retorna el objeto tenencia.
     */
    protected function getObjectTenancy()
    {
        return $this->getObjectNew('BaseTenancyBundle:Tenancy');
    }

    /**
     * @return object Retorna el servicio de tenencias.
     */
    protected function getTenancyService()
    {
        return $this->get('base_tenancy.tenancy_service');
    }

    /**
     * @return bool Retorna TRUE si estoy en el modulo base.
     */
    public function isModuleBase()
    {
        return array_key_exists('BaseTenancyBundle', $this->getParameter('kernel.bundles'));
    }


    /**
     * Funcion que checkea y setea la tenencia en el objeto.
     * @param Request $request Contiene el request.
     * @param object $entity Contiene la entidad a chequear.
     * @return object Retorna el objeto procesado.
     */
    private function checkTenancy(Request $request, $entity)
    {
        $parameters = $request->request->all();
        $service = $this->getTenancyService();
        if ($service->implementTenancyInterface($entity)) {
            if (array_key_exists('tenancy', $parameters)) {
                if ($this->isModuleBase()) {
                    $tenancy = $this->getDoctrine()->getRepository('BaseTenancyBundle:Tenancy')->findOneById($parameters['tenancy']);
                    $entity->setTenancy($tenancy);
                    $service->setTenancy($parameters['tenancy']);
                } else {
                    $entity->setTenancyId($parameters['tenancy']);
                    $service->setTenancy($parameters['tenancy']);
                }
            }
        }
        return $entity;
    }

    /**
     * Create a entity.
     *
     * @View(statusCode=201, serializerEnableMaxDepthChecks=true)
     *
     * @param Request $request Contiene el request.
     *
     * @return FOSView|mixed Retorna el FOSView o la entidad.
     */
    public function postAction(Request $request)
    {
        $entity = $this->checkTenancy($request, $this->getObjectNew());
        $form = $this->createForm($this->getFormEntityType(), $entity, array("method" => $request->getMethod()));
        $this->removeExtraFields($request, $form);
        $form->handleRequest($request);
        if ($form->isValid()) {
            $em = $this->getDoctrine()->getManager();
            $em->persist($entity);
            $em->flush();
            return $entity;
        } else {
            var_dump($this->getFormFieldError($form));
        }
        return FOSView::create(array('errors' => $form->getErrors()), Codes::HTTP_INTERNAL_SERVER_ERROR);
    }

    /**
     * Update a entity.
     *
     * @View(serializerEnableMaxDepthChecks=true)
     *
     * @param Request $request Contiene el request.
     * @param mixed $entity Contiene la entidad
     *
     * @return FOSView|mixed Retorna el FOSView o la entidad.
     */
    public function putAction(Request $request, $entity = null)
    {
        try {
            // obtengo el entitymanager
            $em = $this->getDoctrine()->getManager();
            // obtengo la entidad que deseo modificar
            $entity = $this->getObjectFindById(null, $entity);
            // seteo la tenencia en caso de necesitarla
            $entity = $this->checkTenancy($request, $entity);
            $request->setMethod('PATCH'); //Treat all PUTs as PATCH
            // creo el formulario, esto no lo tenia ningun web service
            $form = $this->createForm($this->getFormEntityType(), $entity, array("method" => $request->getMethod()));
            // saco los campos extras
            $this->removeExtraFields($request, $form);
            // agrego el handler
            $form->handleRequest($request);
            // valido el formulario
            if ($form->isValid()) {
                // actualizo los datos.
                $em->flush();
                return $entity;
            }
            return FOSView::create(array('errors' => $form->getErrors()), Codes::HTTP_INTERNAL_SERVER_ERROR);
        } catch (\Exception $e) {
            return FOSView::create($e->getTraceAsString(), Codes::HTTP_INTERNAL_SERVER_ERROR);
        }
    }

    /**
     * Partial Update to a entity.
     *
     * @View(serializerEnableMaxDepthChecks=true)
     *
     * @param Request $request Contiene el request.
     * @param mixed $entity Contiene la entidad.
     *
     * @return Response Retorna un response.
     */
    public function patchAction(Request $request, $entity)
    {
        return $this->putAction($request, $entity);
    }

    /**
     * Delete a entity.
     *
     * @View(statusCode=204)
     *
     * @param Request $request Contiene el request.
     * @param mixed $entity Contiene la entidad a borrar.
     *
     * @return FOSView Retorna el FSOView.
     */
    public function deleteAction(Request $request, $entity)
    {
        try {
            $em = $this->getDoctrine()->getManager();
            $entity = $this->getObjectFindById(null, $entity);
            $em->remove($entity);
            $em->flush();
            return null;
        } catch (\Exception $e) {
            return FOSView::create($e->getMessage(), Codes::HTTP_INTERNAL_SERVER_ERROR);
        }
    }

    /**
     * Get a entity
     *
     * @View(serializerEnableMaxDepthChecks=true)
     *
     * @param mixed $entity Contiene la entidad.
     *
     * @return mixed|Response Retorna los datos de la entidad o un mensaje de error. En caso de no encontrar
     * el valor buscado devuelve un vacio.
     */
    public function getAction($entity)
    {
        try {
            if (is_object($entity)) {
                $entity = $this->getObjectFindById($entity, $entity->getId());
            } else {
                $entity = $this->getObjectFindById(null, $entity);
            }
            return $entity;
        } catch (\Exception $e) {
            return FOSView::create($e->getMessage(), Codes::HTTP_INTERNAL_SERVER_ERROR);
        }
    }

    /**
     * Se ejecuta el comando amqp:remote por AMQP
     *
     * @global kernel $kernel
     *
     * @param string $name
     * @param array $cmd_args
     *
     * @return string
     */
    public function runCommand($name, $cmd_args = array())
    {
        $kernel = $this->get('kernel');
        $application = new Application($kernel);
        $application->setAutoExit(false);
        $args = [
            '',
            'amqp:remote',
            $name,
            '--route=' . getenv("AMQP_KEY"),
        ];
        foreach ($cmd_args as $cmd_arg) {
            $args[] = "--args={$cmd_arg}";
        }

        $input = new ArgvInput($args);
        $output = new BufferedOutput();
        $application->run($input, $output);

        return $output->fetch();
    }

}