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<?php
namespace Wallabag\CoreBundle\Helper;
use Wallabag\CoreBundle\Entity\Entry;
use Wallabag\CoreBundle\Entity\Tag;
use Wallabag\CoreBundle\Repository\TagRepository;
class TagsAssigner
{
/**
* @var TagRepository
*/
protected $tagRepository;
public function __construct(TagRepository $tagRepository)
{
$this->tagRepository = $tagRepository;
}
/**
* Assign some tags to an entry.
*
* @param Entry $entry
* @param array|string $tags An array of tag or a string coma separated of tag
* @param array $entitiesReady Entities from the EntityManager which are persisted but not yet flushed
* It is mostly to fix duplicate tag on import @see http://stackoverflow.com/a/7879164/569101
*
* @return Tag[]
*/
public function assignTagsToEntry(Entry $entry, $tags, array $entitiesReady = [])
{
$tagsEntities = [];
if (!\is_array($tags)) {
$tags = explode(',', $tags);
}
// keeps only Tag entity from the "not yet flushed entities"
$tagsNotYetFlushed = [];
foreach ($entitiesReady as $entity) {
if ($entity instanceof Tag) {
$tagsNotYetFlushed[$entity->getLabel()] = $entity;
}
}
foreach ($tags as $label) {
$label = trim(mb_convert_case($label, MB_CASE_LOWER));
// avoid empty tag
if (0 === \strlen($label)) {
break;
}
if (isset($tagsNotYetFlushed[$label])) {
$tagEntity = $tagsNotYetFlushed[$label];
} else {
$tagEntity = $this->tagRepository->findOneByLabel($label);
if (null === $tagEntity) {
$tagEntity = new Tag();
$tagEntity->setLabel($label);
}
}
// only add the tag on the entry if the relation doesn't exist
if (false === $entry->getTags()->contains($tagEntity)) {
$entry->addTag($tagEntity);
$tagsEntities[] = $tagEntity;
}
}
return $tagsEntities;
}
}
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