src/Wallabag/CoreBundle/Helper/ContentProxy.php

   1 <?php
   2
   3 namespace Wallabag\CoreBundle\Helper;
   4
   5 use Graby\Graby;
   6 use Psr\Log\LoggerInterface as Logger;
   7 use Wallabag\CoreBundle\Entity\Entry;
   8 use Wallabag\CoreBundle\Entity\Tag;
   9 use Wallabag\CoreBundle\Tools\Utils;
  10 use Wallabag\CoreBundle\Repository\TagRepository;
  11
  12 /**
  13  * This kind of proxy class take care of getting the content from an url
  14  * and update the entry with what it found.
  15  */
  16 class ContentProxy
  17 {
  18     protected $graby;
  19     protected $tagger;
  20     protected $logger;
  21     protected $tagRepository;
  22
  23     public function __construct(Graby $graby, RuleBasedTagger $tagger, TagRepository $tagRepository, Logger $logger)
  24     {
  25         $this->graby = $graby;
  26         $this->tagger = $tagger;
  27         $this->logger = $logger;
  28         $this->tagRepository = $tagRepository;
  29     }
  30
  31     /**
  32      * Fetch content using graby and hydrate given entry with results information.
  33      * In case we couldn't find content, we'll try to use Open Graph data.
  34      *
  35      * @param Entry  $entry Entry to update
  36      * @param string $url   Url to grab content for
  37      *
  38      * @return Entry
  39      */
  40     public function updateEntry(Entry $entry, $url)
  41     {
  42         $content = $this->graby->fetchContent($url);
  43
  44         $title = $content['title'];
  45         if (!$title && isset($content['open_graph']['og_title'])) {
  46             $title = $content['open_graph']['og_title'];
  47         }
  48
  49         $html = $content['html'];
  50         if (false === $html) {
  51             $html = '<p>Unable to retrieve readable content.</p>';
  52
  53             if (isset($content['open_graph']['og_description'])) {
  54                 $html .= '<p><i>But we found a short description: </i></p>';
  55                 $html .= $content['open_graph']['og_description'];
  56             }
  57         }
  58
  59         $entry->setUrl($content['url'] ?: $url);
  60         $entry->setTitle($title);
  61         $entry->setContent($html);
  62         $entry->setLanguage($content['language']);
  63         $entry->setMimetype($content['content_type']);
  64         $entry->setReadingTime(Utils::getReadingTime($html));
  65         $entry->setDomainName(parse_url($entry->getUrl(), PHP_URL_HOST));
  66
  67         if (isset($content['open_graph']['og_image'])) {
  68             $entry->setPreviewPicture($content['open_graph']['og_image']);
  69         }
  70
  71         try {
  72             $this->tagger->tag($entry);
  73         } catch (\Exception $e) {
  74             $this->logger->error('Error while trying to automatically tag an entry.', array(
  75                 'entry_url' => $url,
  76                 'error_msg' => $e->getMessage(),
  77             ));
  78         }
  79
  80         return $entry;
  81     }
  82
  83     /**
  84      * Assign some tags to an entry.
  85      *
  86      * @param Entry        $entry
  87      * @param array|string $tags  An array of tag or a string coma separated of tag
  88      */
  89     public function assignTagsToEntry(Entry $entry, $tags)
  90     {
  91         if (!is_array($tags)) {
  92             $tags = explode(',', $tags);
  93         }
  94
  95         foreach ($tags as $label) {
  96             $label = trim($label);
  97
  98             // avoid empty tag
  99             if (0 === strlen($label)) {
 100                 continue;
 101             }
 102
 103             $tagEntity = $this->tagRepository->findOneByLabel($label);
 104
 105             if (is_null($tagEntity)) {
 106                 $tagEntity = new Tag();
 107                 $tagEntity->setLabel($label);
 108             }
 109
 110             // only add the tag on the entry if the relation doesn't exist
 111             if (false === $entry->getTags()->contains($tagEntity)) {
 112                 $entry->addTag($tagEntity);
 113             }
 114         }
 115     }
 116 }