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<?php
namespace Wallabag\CoreBundle\Helper;
use RulerZ\RulerZ;
use Wallabag\CoreBundle\Entity\Entry;
use Wallabag\CoreBundle\Entity\Tag;
use Wallabag\CoreBundle\Repository\TagRepository;
use Wallabag\UserBundle\Entity\User;
class RuleBasedTagger
{
private $rulerz;
private $tagRepository;
public function __construct(RulerZ $rulerz, TagRepository $tagRepository)
{
$this->rulerz = $rulerz;
$this->tagRepository = $tagRepository;
}
/**
* Add tags from rules defined by the user.
*
* @param Entry $entry Entry to tag.
*/
public function tag(Entry $entry)
{
$rules = $this->getRulesForUser($entry->getUser());
foreach ($rules as $rule) {
if (!$this->rulerz->satisfies($entry, $rule['rule'])) {
continue;
}
foreach ($rule['tags'] as $label) {
$tag = $this->getTag($entry->getUser(), $label);
$entry->addTag($tag);
}
}
}
/**
* Fetch a tag for a user.
*
* @param User $user
* @param string $label The tag's label.
*
* @return Tag
*/
private function getTag(User $user, $label)
{
$tag = $this->tagRepository->findOneByLabelAndUserId($label, $user->getId());
if (!$tag) {
$tag = new Tag($user);
$tag->setLabel($label);
}
return $tag;
}
private function getRulesForUser(User $user)
{
return [
[
'rule' => 'domainName = "github.com"',
'tags' => ['github'],
],
[
'rule' => 'readingTime >= 15',
'tags' => ['long reading'],
],
[
'rule' => 'readingTime <= 3 ',
'tags' => ['short reading'],
],
];
}
}
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