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1 | <?php | |
2 | ||
3 | namespace Wallabag\CoreBundle\Event\Subscriber; | |
4 | ||
5 | use Doctrine\ORM\EntityManager; | |
6 | use Psr\Log\LoggerInterface; | |
7 | use Symfony\Component\EventDispatcher\EventSubscriberInterface; | |
8 | use Wallabag\CoreBundle\Entity\Entry; | |
9 | use Wallabag\CoreBundle\Event\EntryDeletedEvent; | |
10 | use Wallabag\CoreBundle\Event\EntrySavedEvent; | |
11 | use Wallabag\CoreBundle\Helper\DownloadImages; | |
12 | ||
13 | class DownloadImagesSubscriber implements EventSubscriberInterface | |
14 | { | |
15 | private $em; | |
16 | private $downloadImages; | |
17 | private $enabled; | |
18 | private $logger; | |
19 | ||
20 | public function __construct(EntityManager $em, DownloadImages $downloadImages, $enabled, LoggerInterface $logger) | |
21 | { | |
22 | $this->em = $em; | |
23 | $this->downloadImages = $downloadImages; | |
24 | $this->enabled = $enabled; | |
25 | $this->logger = $logger; | |
26 | } | |
27 | ||
28 | public static function getSubscribedEvents() | |
29 | { | |
30 | return [ | |
31 | EntrySavedEvent::NAME => 'onEntrySaved', | |
32 | EntryDeletedEvent::NAME => 'onEntryDeleted', | |
33 | ]; | |
34 | } | |
35 | ||
36 | /** | |
37 | * Download images and updated the data into the entry. | |
38 | * | |
39 | * @param EntrySavedEvent $event | |
40 | */ | |
41 | public function onEntrySaved(EntrySavedEvent $event) | |
42 | { | |
43 | if (!$this->enabled) { | |
44 | $this->logger->debug('DownloadImagesSubscriber: disabled.'); | |
45 | ||
46 | return; | |
47 | } | |
48 | ||
49 | $entry = $event->getEntry(); | |
50 | ||
51 | $html = $this->downloadImages($entry); | |
52 | if (false !== $html) { | |
53 | $this->logger->debug('DownloadImagesSubscriber: updated html.'); | |
54 | ||
55 | $entry->setContent($html); | |
56 | } | |
57 | ||
58 | // update preview picture | |
59 | $previewPicture = $this->downloadPreviewImage($entry); | |
60 | if (false !== $previewPicture) { | |
61 | $this->logger->debug('DownloadImagesSubscriber: update preview picture.'); | |
62 | ||
63 | $entry->setPreviewPicture($previewPicture); | |
64 | } | |
65 | ||
66 | $this->em->persist($entry); | |
67 | $this->em->flush(); | |
68 | } | |
69 | ||
70 | /** | |
71 | * Remove images related to the entry. | |
72 | * | |
73 | * @param EntryDeletedEvent $event | |
74 | */ | |
75 | public function onEntryDeleted(EntryDeletedEvent $event) | |
76 | { | |
77 | if (!$this->enabled) { | |
78 | $this->logger->debug('DownloadImagesSubscriber: disabled.'); | |
79 | ||
80 | return; | |
81 | } | |
82 | ||
83 | $this->downloadImages->removeImages($event->getEntry()->getId()); | |
84 | } | |
85 | ||
86 | /** | |
87 | * Download all images from the html. | |
88 | * | |
89 | * @todo If we want to add async download, it should be done in that method | |
90 | * | |
91 | * @param Entry $entry | |
92 | * | |
93 | * @return string|false False in case of async | |
94 | */ | |
95 | private function downloadImages(Entry $entry) | |
96 | { | |
97 | return $this->downloadImages->processHtml( | |
98 | $entry->getId(), | |
99 | $entry->getContent(), | |
100 | $entry->getUrl() | |
101 | ); | |
102 | } | |
103 | ||
104 | /** | |
105 | * Download the preview picture. | |
106 | * | |
107 | * @todo If we want to add async download, it should be done in that method | |
108 | * | |
109 | * @param Entry $entry | |
110 | * | |
111 | * @return string|false False in case of async | |
112 | */ | |
113 | private function downloadPreviewImage(Entry $entry) | |
114 | { | |
115 | return $this->downloadImages->processSingleImage( | |
116 | $entry->getId(), | |
117 | $entry->getPreviewPicture(), | |
118 | $entry->getUrl() | |
119 | ); | |
120 | } | |
121 | } |