<?php

namespace IRI\Bundle\WikiTagBundle\Entity;

use Doctrine\ORM\Query;

use Doctrine\ORM\QueryBuilder;

use Doctrine\ORM\EntityRepository;

use Doctrine\ORM\NoResultException;

/**

 * DocumentTagRepository

 *

 * This class was generated by the Doctrine ORM. Add your own custom

 * repository methods below.

 */

class DocumentTagRepository extends EntityRepository

{

   /**

    *  Find ordered tags by document id

    */

    public function findOrderedTagsForDoc($doc_id)

    {

        return $this->getEntityManager()

        ->createQuery("SELECT doctag FROM WikiTagBundle:DocumentTag doctag JOIN doctag.document doc WHERE doc.externalId=:doc_id ORDER BY doctag.tagOrder ASC")

        ->setParameter("doc_id", strval($doc_id))

        ->getResult();

    }

    private function findMaxOrderInUow($entityList, $doc_id, $max_order) {

        foreach($entityList as $entity) {

            if(is_a($entity, "\IRI\Bundle\WikiTagBundle\Model\DocumentTagInterface") &&

            !is_null($entity->getDocument()) &&

            ( $entity->getDocument() === $doc_id || $entity->getDocument()->getId() === $doc_id ) )

            {

                $max_order = max(array($max_order, $entity->getTagOrder()));

            }

        }

        return $max_order;

    }

    /**

     *  Gets the max order of all tags for one document

     */

    public function getMaxOrder($doc_id)

    {

        $max_order_res = $this->getEntityManager()

            ->createQuery("SELECT MAX(doctag.tagOrder) FROM WikiTagBundle:DocumentTag doctag JOIN doctag.document doc WHERE doc.externalId= :doc_id")

            ->setParameter("doc_id", strval($doc_id))

            ->getSingleScalarResult();

        $max_order = 0;

        if(!is_null($max_order_res)) {

            $max_order = intval($max_order_res);

        }

        $uow = $this->getEntityManager()->getUnitOfWork();

        $max_order = $this->findMaxOrderInUow($uow->getScheduledEntityInsertions(), $doc_id, $max_order);

        $max_order = $this->findMaxOrderInUow($uow->getScheduledEntityUpdates(), $doc_id, $max_order);

        return $max_order;

    }

    /**

     *

     * Enter description here ...

     * @param unknown_type $external_id

     * @param array $filter_array

     * @return QueryBuilder

     */

    private function createQueryBuilderByDocumentExternalId($external_id, array $filter_array=null) {

        $qb = $this->createQueryBuilder("dt")

        ->join('dt.document', 'd')

        ->where('d.externalId = :external_id');

        $params = array("external_id"=>strval($external_id));

        if(!is_null($filter_array)) {

            foreach ($filter_array as $key => $value) {

                $qb = $qb->andWhere("dt.$key = :$key");

                //$params[$key] = $value;

            }

            $params = array_merge($params, $filter_array);

        }

        $qb = $qb->setParameters($params);

        return $qb;

    }

    /**

     *

     * Enter description here ...

     * @param unknown_type $external_id

     * @param array $filter_array

     */

    public function findByDocumentExternalId($external_id, array $filter_array=null)

    {

        $qb = $this->createQueryBuilderByDocumentExternalId($external_id, $filter_array);

        return $qb->getQuery()->getResult();

    }

   	/**

     *

     * Enter description here ...

     * @param unknown_type $external_id

     * @param array $filter_array

     */

    public function findOneByDocumentExternalId($external_id, array $filter_array=null) {

        $qb = $this->createQueryBuilderByDocumentExternalId($external_id, $filter_array)->setMaxResults(1);

        try {

            return $qb->getQuery()->getSingleResult();

        } catch (NoResultException $e) {

            return null;

        }

    }

}