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1 | <?php | |
2 | ||
3 | namespace Wallabag\CoreBundle\Helper; | |
4 | ||
5 | use Graby\Graby; | |
6 | use Psr\Log\LoggerInterface; | |
7 | use Symfony\Component\HttpFoundation\File\MimeType\MimeTypeExtensionGuesser; | |
8 | use Symfony\Component\Validator\Constraints\Locale as LocaleConstraint; | |
9 | use Symfony\Component\Validator\Constraints\Url as UrlConstraint; | |
10 | use Symfony\Component\Validator\Validator\ValidatorInterface; | |
11 | use Wallabag\CoreBundle\Entity\Entry; | |
12 | use Wallabag\CoreBundle\Tools\Utils; | |
13 | ||
14 | /** | |
15 | * This kind of proxy class take care of getting the content from an url | |
16 | * and update the entry with what it found. | |
17 | */ | |
18 | class ContentProxy | |
19 | { | |
20 | protected $graby; | |
21 | protected $tagger; | |
22 | protected $validator; | |
23 | protected $logger; | |
24 | protected $mimeGuesser; | |
25 | protected $fetchingErrorMessage; | |
26 | protected $eventDispatcher; | |
27 | protected $storeArticleHeaders; | |
28 | ||
29 | public function __construct(Graby $graby, RuleBasedTagger $tagger, ValidatorInterface $validator, LoggerInterface $logger, $fetchingErrorMessage, $storeArticleHeaders = false) | |
30 | { | |
31 | $this->graby = $graby; | |
32 | $this->tagger = $tagger; | |
33 | $this->validator = $validator; | |
34 | $this->logger = $logger; | |
35 | $this->mimeGuesser = new MimeTypeExtensionGuesser(); | |
36 | $this->fetchingErrorMessage = $fetchingErrorMessage; | |
37 | $this->storeArticleHeaders = $storeArticleHeaders; | |
38 | } | |
39 | ||
40 | /** | |
41 | * Update entry using either fetched or provided content. | |
42 | * | |
43 | * @param Entry $entry Entry to update | |
44 | * @param string $url Url of the content | |
45 | * @param array $content Array with content provided for import with AT LEAST keys title, html, url to skip the fetchContent from the url | |
46 | * @param bool $disableContentUpdate Whether to skip trying to fetch content using Graby | |
47 | */ | |
48 | public function updateEntry(Entry $entry, $url, array $content = [], $disableContentUpdate = false) | |
49 | { | |
50 | if (!empty($content['html'])) { | |
51 | $content['html'] = $this->graby->cleanupHtml($content['html'], $url); | |
52 | } | |
53 | ||
54 | if ((empty($content) || false === $this->validateContent($content)) && false === $disableContentUpdate) { | |
55 | $fetchedContent = $this->graby->fetchContent($url); | |
56 | ||
57 | // when content is imported, we have information in $content | |
58 | // in case fetching content goes bad, we'll keep the imported information instead of overriding them | |
59 | if (empty($content) || $fetchedContent['html'] !== $this->fetchingErrorMessage) { | |
60 | $content = $fetchedContent; | |
61 | } | |
62 | } | |
63 | ||
64 | // be sure to keep the url in case of error | |
65 | // so we'll be able to refetch it in the future | |
66 | $content['url'] = !empty($content['url']) ? $content['url'] : $url; | |
67 | ||
68 | $this->stockEntry($entry, $content); | |
69 | } | |
70 | ||
71 | /** | |
72 | * Use a Symfony validator to ensure the language is well formatted. | |
73 | * | |
74 | * @param Entry $entry | |
75 | * @param string $value Language to validate and save | |
76 | */ | |
77 | public function updateLanguage(Entry $entry, $value) | |
78 | { | |
79 | // some lang are defined as fr-FR, es-ES. | |
80 | // replacing - by _ might increase language support | |
81 | $value = str_replace('-', '_', $value); | |
82 | ||
83 | $errors = $this->validator->validate( | |
84 | $value, | |
85 | (new LocaleConstraint()) | |
86 | ); | |
87 | ||
88 | if (0 === \count($errors)) { | |
89 | $entry->setLanguage($value); | |
90 | ||
91 | return; | |
92 | } | |
93 | ||
94 | $this->logger->warning('Language validation failed. ' . (string) $errors); | |
95 | } | |
96 | ||
97 | /** | |
98 | * Use a Symfony validator to ensure the preview picture is a real url. | |
99 | * | |
100 | * @param Entry $entry | |
101 | * @param string $value URL to validate and save | |
102 | */ | |
103 | public function updatePreviewPicture(Entry $entry, $value) | |
104 | { | |
105 | $errors = $this->validator->validate( | |
106 | $value, | |
107 | (new UrlConstraint()) | |
108 | ); | |
109 | ||
110 | if (0 === \count($errors)) { | |
111 | $entry->setPreviewPicture($value); | |
112 | ||
113 | return; | |
114 | } | |
115 | ||
116 | $this->logger->warning('PreviewPicture validation failed. ' . (string) $errors); | |
117 | } | |
118 | ||
119 | /** | |
120 | * Update date. | |
121 | * | |
122 | * @param Entry $entry | |
123 | * @param string $value Date to validate and save | |
124 | */ | |
125 | public function updatePublishedAt(Entry $entry, $value) | |
126 | { | |
127 | $date = $value; | |
128 | ||
129 | // is it a timestamp? | |
130 | if (false !== filter_var($date, FILTER_VALIDATE_INT)) { | |
131 | $date = '@' . $date; | |
132 | } | |
133 | ||
134 | try { | |
135 | // is it already a DateTime? | |
136 | // (it's inside the try/catch in case of fail to be parse time string) | |
137 | if (!$date instanceof \DateTime) { | |
138 | $date = new \DateTime($date); | |
139 | } | |
140 | ||
141 | $entry->setPublishedAt($date); | |
142 | } catch (\Exception $e) { | |
143 | $this->logger->warning('Error while defining date', ['e' => $e, 'url' => $entry->getUrl(), 'date' => $value]); | |
144 | } | |
145 | } | |
146 | ||
147 | /** | |
148 | * Helper to extract and save host from entry url. | |
149 | * | |
150 | * @param Entry $entry | |
151 | */ | |
152 | public function setEntryDomainName(Entry $entry) | |
153 | { | |
154 | $domainName = parse_url($entry->getUrl(), PHP_URL_HOST); | |
155 | if (false !== $domainName) { | |
156 | $entry->setDomainName($domainName); | |
157 | } | |
158 | } | |
159 | ||
160 | /** | |
161 | * Helper to set a default title using: | |
162 | * - url basename, if applicable | |
163 | * - hostname. | |
164 | * | |
165 | * @param Entry $entry | |
166 | */ | |
167 | public function setDefaultEntryTitle(Entry $entry) | |
168 | { | |
169 | $url = parse_url($entry->getUrl()); | |
170 | $path = pathinfo($url['path'], PATHINFO_BASENAME); | |
171 | ||
172 | if (empty($path)) { | |
173 | $path = $url['host']; | |
174 | } | |
175 | ||
176 | $entry->setTitle($path); | |
177 | } | |
178 | ||
179 | /** | |
180 | * Stock entry with fetched or imported content. | |
181 | * Will fall back to OpenGraph data if available. | |
182 | * | |
183 | * @param Entry $entry Entry to stock | |
184 | * @param array $content Array with at least title, url & html | |
185 | */ | |
186 | private function stockEntry(Entry $entry, array $content) | |
187 | { | |
188 | $entry->setUrl($content['url']); | |
189 | ||
190 | $this->setEntryDomainName($entry); | |
191 | ||
192 | if (!empty($content['title'])) { | |
193 | $entry->setTitle($content['title']); | |
194 | } elseif (!empty($content['open_graph']['og_title'])) { | |
195 | $entry->setTitle($content['open_graph']['og_title']); | |
196 | } | |
197 | ||
198 | $html = $content['html']; | |
199 | if (false === $html) { | |
200 | $html = $this->fetchingErrorMessage; | |
201 | ||
202 | if (!empty($content['open_graph']['og_description'])) { | |
203 | $html .= '<p><i>But we found a short description: </i></p>'; | |
204 | $html .= $content['open_graph']['og_description']; | |
205 | } | |
206 | } | |
207 | ||
208 | $entry->setContent($html); | |
209 | $entry->setReadingTime(Utils::getReadingTime($html)); | |
210 | ||
211 | if (!empty($content['status'])) { | |
212 | $entry->setHttpStatus($content['status']); | |
213 | } | |
214 | ||
215 | if (!empty($content['authors']) && \is_array($content['authors'])) { | |
216 | $entry->setPublishedBy($content['authors']); | |
217 | } | |
218 | ||
219 | if (!empty($content['all_headers']) && $this->storeArticleHeaders) { | |
220 | $entry->setHeaders($content['all_headers']); | |
221 | } | |
222 | ||
223 | if (!empty($content['date'])) { | |
224 | $this->updatePublishedAt($entry, $content['date']); | |
225 | } | |
226 | ||
227 | if (!empty($content['language'])) { | |
228 | $this->updateLanguage($entry, $content['language']); | |
229 | } | |
230 | ||
231 | if (!empty($content['open_graph']['og_image'])) { | |
232 | $this->updatePreviewPicture($entry, $content['open_graph']['og_image']); | |
233 | } | |
234 | ||
235 | // if content is an image, define it as a preview too | |
236 | if (!empty($content['content_type']) && \in_array($this->mimeGuesser->guess($content['content_type']), ['jpeg', 'jpg', 'gif', 'png'], true)) { | |
237 | $this->updatePreviewPicture($entry, $content['url']); | |
238 | } | |
239 | ||
240 | if (!empty($content['content_type'])) { | |
241 | $entry->setMimetype($content['content_type']); | |
242 | } | |
243 | ||
244 | try { | |
245 | $this->tagger->tag($entry); | |
246 | } catch (\Exception $e) { | |
247 | $this->logger->error('Error while trying to automatically tag an entry.', [ | |
248 | 'entry_url' => $content['url'], | |
249 | 'error_msg' => $e->getMessage(), | |
250 | ]); | |
251 | } | |
252 | } | |
253 | ||
254 | /** | |
255 | * Validate that the given content has at least a title, an html and a url. | |
256 | * | |
257 | * @param array $content | |
258 | * | |
259 | * @return bool true if valid otherwise false | |
260 | */ | |
261 | private function validateContent(array $content) | |
262 | { | |
263 | return !empty($content['title']) && !empty($content['html']) && !empty($content['url']); | |
264 | } | |
265 | } |