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1 | <?php | |
2 | ||
3 | namespace Wallabag\CoreBundle\Helper; | |
4 | ||
5 | use Graby\Graby; | |
6 | use Psr\Log\LoggerInterface; | |
7 | use Wallabag\CoreBundle\Entity\Entry; | |
8 | use Wallabag\CoreBundle\Tools\Utils; | |
9 | use Symfony\Component\HttpFoundation\File\MimeType\MimeTypeExtensionGuesser; | |
10 | ||
11 | /** | |
12 | * This kind of proxy class take care of getting the content from an url | |
13 | * and update the entry with what it found. | |
14 | */ | |
15 | class ContentProxy | |
16 | { | |
17 | protected $graby; | |
18 | protected $tagger; | |
19 | protected $logger; | |
20 | protected $mimeGuesser; | |
21 | protected $fetchingErrorMessage; | |
22 | protected $eventDispatcher; | |
23 | ||
24 | public function __construct(Graby $graby, RuleBasedTagger $tagger, LoggerInterface $logger, $fetchingErrorMessage) | |
25 | { | |
26 | $this->graby = $graby; | |
27 | $this->tagger = $tagger; | |
28 | $this->logger = $logger; | |
29 | $this->mimeGuesser = new MimeTypeExtensionGuesser(); | |
30 | $this->fetchingErrorMessage = $fetchingErrorMessage; | |
31 | } | |
32 | ||
33 | /** | |
34 | * Fetch content using graby and hydrate given entry with results information. | |
35 | * In case we couldn't find content, we'll try to use Open Graph data. | |
36 | * | |
37 | * We can also force the content, in case of an import from the v1 for example, so the function won't | |
38 | * fetch the content from the website but rather use information given with the $content parameter. | |
39 | * | |
40 | * @param Entry $entry Entry to update | |
41 | * @param string $url Url to grab content for | |
42 | * @param array $content An array with AT LEAST keys title, html, url, language & content_type to skip the fetchContent from the url | |
43 | * | |
44 | * @return Entry | |
45 | */ | |
46 | public function updateEntry(Entry $entry, $url, array $content = []) | |
47 | { | |
48 | // do we have to fetch the content or the provided one is ok? | |
49 | if (empty($content) || false === $this->validateContent($content)) { | |
50 | $fetchedContent = $this->graby->fetchContent($url); | |
51 | ||
52 | // when content is imported, we have information in $content | |
53 | // in case fetching content goes bad, we'll keep the imported information instead of overriding them | |
54 | if (empty($content) || $fetchedContent['html'] !== $this->fetchingErrorMessage) { | |
55 | $content = $fetchedContent; | |
56 | } | |
57 | } | |
58 | ||
59 | $title = $content['title']; | |
60 | if (!$title && isset($content['open_graph']['og_title'])) { | |
61 | $title = $content['open_graph']['og_title']; | |
62 | } | |
63 | ||
64 | $html = $content['html']; | |
65 | if (false === $html) { | |
66 | $html = $this->fetchingErrorMessage; | |
67 | ||
68 | if (isset($content['open_graph']['og_description'])) { | |
69 | $html .= '<p><i>But we found a short description: </i></p>'; | |
70 | $html .= $content['open_graph']['og_description']; | |
71 | } | |
72 | } | |
73 | ||
74 | $entry->setUrl($content['url'] ?: $url); | |
75 | $entry->setTitle($title); | |
76 | $entry->setContent($html); | |
77 | $entry->setHttpStatus(isset($content['status']) ? $content['status'] : ''); | |
78 | ||
79 | if (isset($content['date']) && null !== $content['date'] && '' !== $content['date']) { | |
80 | $entry->setPublishedAt(new \DateTime($content['date'])); | |
81 | } | |
82 | ||
83 | if (!empty($content['authors'])) { | |
84 | $entry->setPublishedBy($content['authors']); | |
85 | } | |
86 | ||
87 | if (!empty($content['all_headers'])) { | |
88 | $entry->setHeaders($content['all_headers']); | |
89 | } | |
90 | ||
91 | $entry->setLanguage(isset($content['language']) ? $content['language'] : ''); | |
92 | $entry->setMimetype(isset($content['content_type']) ? $content['content_type'] : ''); | |
93 | $entry->setReadingTime(Utils::getReadingTime($html)); | |
94 | ||
95 | $domainName = parse_url($entry->getUrl(), PHP_URL_HOST); | |
96 | if (false !== $domainName) { | |
97 | $entry->setDomainName($domainName); | |
98 | } | |
99 | ||
100 | if (isset($content['open_graph']['og_image']) && $content['open_graph']['og_image']) { | |
101 | $entry->setPreviewPicture($content['open_graph']['og_image']); | |
102 | } | |
103 | ||
104 | // if content is an image define as a preview too | |
105 | if (isset($content['content_type']) && in_array($this->mimeGuesser->guess($content['content_type']), ['jpeg', 'jpg', 'gif', 'png'], true)) { | |
106 | $entry->setPreviewPicture($content['url']); | |
107 | } | |
108 | ||
109 | try { | |
110 | $this->tagger->tag($entry); | |
111 | } catch (\Exception $e) { | |
112 | $this->logger->error('Error while trying to automatically tag an entry.', [ | |
113 | 'entry_url' => $url, | |
114 | 'error_msg' => $e->getMessage(), | |
115 | ]); | |
116 | } | |
117 | ||
118 | return $entry; | |
119 | } | |
120 | ||
121 | /** | |
122 | * Validate that the given content as enough value to be used | |
123 | * instead of fetch the content from the url. | |
124 | * | |
125 | * @param array $content | |
126 | * | |
127 | * @return bool true if valid otherwise false | |
128 | */ | |
129 | private function validateContent(array $content) | |
130 | { | |
131 | return isset($content['title']) && isset($content['html']) && isset($content['url']) && isset($content['language']) && isset($content['content_type']); | |
132 | } | |
133 | } |