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1 | <?php | |
2 | ||
3 | namespace Wallabag\CoreBundle\Helper; | |
4 | ||
5 | use JMS\Serializer; | |
6 | use JMS\Serializer\SerializationContext; | |
7 | use JMS\Serializer\SerializerBuilder; | |
8 | use PHPePub\Core\EPub; | |
9 | use PHPePub\Core\Structure\OPF\DublinCore; | |
10 | use Symfony\Component\HttpFoundation\Response; | |
11 | use Craue\ConfigBundle\Util\Config; | |
12 | ||
13 | /** | |
14 | * This class doesn't have unit test BUT it's fully covered by a functional test with ExportControllerTest. | |
15 | */ | |
16 | class EntriesExport | |
17 | { | |
18 | private $wallabagUrl; | |
19 | private $logoPath; | |
20 | private $title = ''; | |
21 | private $entries = []; | |
22 | private $authors = ['wallabag']; | |
23 | private $language = ''; | |
24 | private $footerTemplate = '<div style="text-align:center;"> | |
25 | <p>Produced by wallabag with %EXPORT_METHOD%</p> | |
26 | <p>Please open <a href="https://github.com/wallabag/wallabag/issues">an issue</a> if you have trouble with the display of this E-Book on your device.</p> | |
27 | </div>'; | |
28 | ||
29 | /** | |
30 | * @param Config $craueConfig CraueConfig instance to get wallabag instance url from database | |
31 | * @param string $logoPath Path to the logo FROM THE BUNDLE SCOPE | |
32 | */ | |
33 | public function __construct(Config $craueConfig, $logoPath) | |
34 | { | |
35 | $this->wallabagUrl = $craueConfig->get('wallabag_url'); | |
36 | $this->logoPath = $logoPath; | |
37 | } | |
38 | ||
39 | /** | |
40 | * Define entries. | |
41 | * | |
42 | * @param array|Entry $entries An array of entries or one entry | |
43 | * | |
44 | * @return EntriesExport | |
45 | */ | |
46 | public function setEntries($entries) | |
47 | { | |
48 | if (!is_array($entries)) { | |
49 | $this->language = $entries->getLanguage(); | |
50 | $entries = [$entries]; | |
51 | } | |
52 | ||
53 | $this->entries = $entries; | |
54 | ||
55 | return $this; | |
56 | } | |
57 | ||
58 | /** | |
59 | * Sets the category of which we want to get articles, or just one entry. | |
60 | * | |
61 | * @param string $method Method to get articles | |
62 | * | |
63 | * @return EntriesExport | |
64 | */ | |
65 | public function updateTitle($method) | |
66 | { | |
67 | $this->title = $method.' articles'; | |
68 | ||
69 | if ('entry' === $method) { | |
70 | $this->title = $this->entries[0]->getTitle(); | |
71 | } | |
72 | ||
73 | return $this; | |
74 | } | |
75 | ||
76 | /** | |
77 | * Sets the output format. | |
78 | * | |
79 | * @param string $format | |
80 | * | |
81 | * @return Response | |
82 | */ | |
83 | public function exportAs($format) | |
84 | { | |
85 | $functionName = 'produce'.ucfirst($format); | |
86 | if (method_exists($this, $functionName)) { | |
87 | return $this->$functionName(); | |
88 | } | |
89 | ||
90 | throw new \InvalidArgumentException(sprintf('The format "%s" is not yet supported.', $format)); | |
91 | } | |
92 | ||
93 | /** | |
94 | * Use PHPePub to dump a .epub file. | |
95 | * | |
96 | * @return Response | |
97 | */ | |
98 | private function produceEpub() | |
99 | { | |
100 | /* | |
101 | * Start and End of the book | |
102 | */ | |
103 | $content_start = | |
104 | "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" | |
105 | ."<html xmlns=\"http://www.w3.org/1999/xhtml\" xmlns:epub=\"http://www.idpf.org/2007/ops\">\n" | |
106 | .'<head>' | |
107 | ."<meta http-equiv=\"Default-Style\" content=\"text/html; charset=utf-8\" />\n" | |
108 | ."<title>wallabag articles book</title>\n" | |
109 | ."</head>\n" | |
110 | ."<body>\n"; | |
111 | ||
112 | $bookEnd = "</body>\n</html>\n"; | |
113 | ||
114 | $book = new EPub(EPub::BOOK_VERSION_EPUB3); | |
115 | ||
116 | /* | |
117 | * Book metadata | |
118 | */ | |
119 | ||
120 | $book->setTitle($this->title); | |
121 | // Could also be the ISBN number, prefered for published books, or a UUID. | |
122 | $book->setIdentifier($this->title, EPub::IDENTIFIER_URI); | |
123 | // Not needed, but included for the example, Language is mandatory, but EPub defaults to "en". Use RFC3066 Language codes, such as "en", "da", "fr" etc. | |
124 | $book->setLanguage($this->language); | |
125 | $book->setDescription('Some articles saved on my wallabag'); | |
126 | ||
127 | foreach ($this->authors as $author) { | |
128 | $book->setAuthor($author, $author); | |
129 | } | |
130 | ||
131 | // I hope this is a non existant address :) | |
132 | $book->setPublisher('wallabag', 'wallabag'); | |
133 | // Strictly not needed as the book date defaults to time(). | |
134 | $book->setDate(time()); | |
135 | $book->setSourceURL($this->wallabagUrl); | |
136 | ||
137 | $book->addDublinCoreMetadata(DublinCore::CONTRIBUTOR, 'PHP'); | |
138 | $book->addDublinCoreMetadata(DublinCore::CONTRIBUTOR, 'wallabag'); | |
139 | ||
140 | /* | |
141 | * Front page | |
142 | */ | |
143 | if (file_exists($this->logoPath)) { | |
144 | $book->setCoverImage('Cover.png', file_get_contents($this->logoPath), 'image/png'); | |
145 | } | |
146 | ||
147 | $book->addChapter('Notices', 'Cover2.html', $content_start.$this->getExportInformation('PHPePub').$bookEnd); | |
148 | ||
149 | $book->buildTOC(); | |
150 | ||
151 | /* | |
152 | * Adding actual entries | |
153 | */ | |
154 | ||
155 | // set tags as subjects | |
156 | foreach ($this->entries as $entry) { | |
157 | foreach ($entry->getTags() as $tag) { | |
158 | $book->setSubject($tag->getLabel()); | |
159 | } | |
160 | ||
161 | // the reader in Kobo Devices doesn't likes special caracters | |
162 | // in filenames, we limit to A-z/0-9 | |
163 | $filename = preg_replace('/[^A-Za-z0-9\-]/', '', $entry->getTitle()); | |
164 | ||
165 | $chapter = $content_start.$entry->getContent().$bookEnd; | |
166 | $book->addChapter($entry->getTitle(), htmlspecialchars($filename).'.html', $chapter, true, EPub::EXTERNAL_REF_ADD); | |
167 | } | |
168 | ||
169 | return Response::create( | |
170 | $book->getBook(), | |
171 | 200, | |
172 | [ | |
173 | 'Content-Description' => 'File Transfer', | |
174 | 'Content-type' => 'application/epub+zip', | |
175 | 'Content-Disposition' => 'attachment; filename="'.$this->title.'.epub"', | |
176 | 'Content-Transfer-Encoding' => 'binary', | |
177 | ] | |
178 | ); | |
179 | } | |
180 | ||
181 | /** | |
182 | * Use PHPMobi to dump a .mobi file. | |
183 | * | |
184 | * @return Response | |
185 | */ | |
186 | private function produceMobi() | |
187 | { | |
188 | $mobi = new \MOBI(); | |
189 | $content = new \MOBIFile(); | |
190 | ||
191 | /* | |
192 | * Book metadata | |
193 | */ | |
194 | $content->set('title', $this->title); | |
195 | $content->set('author', implode($this->authors)); | |
196 | $content->set('subject', $this->title); | |
197 | ||
198 | /* | |
199 | * Front page | |
200 | */ | |
201 | $content->appendParagraph($this->getExportInformation('PHPMobi')); | |
202 | if (file_exists($this->logoPath)) { | |
203 | $content->appendImage(imagecreatefrompng($this->logoPath)); | |
204 | } | |
205 | $content->appendPageBreak(); | |
206 | ||
207 | /* | |
208 | * Adding actual entries | |
209 | */ | |
210 | foreach ($this->entries as $entry) { | |
211 | $content->appendChapterTitle($entry->getTitle()); | |
212 | $content->appendParagraph($entry->getContent()); | |
213 | $content->appendPageBreak(); | |
214 | } | |
215 | $mobi->setContentProvider($content); | |
216 | ||
217 | // the browser inside Kindle Devices doesn't likes special caracters either, we limit to A-z/0-9 | |
218 | $this->title = preg_replace('/[^A-Za-z0-9\-]/', '', $this->title); | |
219 | ||
220 | return Response::create( | |
221 | $mobi->toString(), | |
222 | 200, | |
223 | [ | |
224 | 'Accept-Ranges' => 'bytes', | |
225 | 'Content-Description' => 'File Transfer', | |
226 | 'Content-type' => 'application/x-mobipocket-ebook', | |
227 | 'Content-Disposition' => 'attachment; filename="'.$this->title.'.mobi"', | |
228 | 'Content-Transfer-Encoding' => 'binary', | |
229 | ] | |
230 | ); | |
231 | } | |
232 | ||
233 | /** | |
234 | * Use TCPDF to dump a .pdf file. | |
235 | * | |
236 | * @return Response | |
237 | */ | |
238 | private function producePdf() | |
239 | { | |
240 | $pdf = new \TCPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false); | |
241 | ||
242 | /* | |
243 | * Book metadata | |
244 | */ | |
245 | $pdf->SetCreator(PDF_CREATOR); | |
246 | $pdf->SetAuthor('wallabag'); | |
247 | $pdf->SetTitle($this->title); | |
248 | $pdf->SetSubject('Articles via wallabag'); | |
249 | $pdf->SetKeywords('wallabag'); | |
250 | ||
251 | /* | |
252 | * Front page | |
253 | */ | |
254 | $pdf->AddPage(); | |
255 | $intro = '<h1>'.$this->title.'</h1>'.$this->getExportInformation('tcpdf'); | |
256 | ||
257 | $pdf->writeHTMLCell(0, 0, '', '', $intro, 0, 1, 0, true, '', true); | |
258 | ||
259 | /* | |
260 | * Adding actual entries | |
261 | */ | |
262 | foreach ($this->entries as $entry) { | |
263 | foreach ($entry->getTags() as $tag) { | |
264 | $pdf->SetKeywords($tag->getLabel()); | |
265 | } | |
266 | ||
267 | $pdf->AddPage(); | |
268 | $html = '<h1>'.$entry->getTitle().'</h1>'; | |
269 | $html .= $entry->getContent(); | |
270 | ||
271 | $pdf->writeHTMLCell(0, 0, '', '', $html, 0, 1, 0, true, '', true); | |
272 | } | |
273 | ||
274 | // set image scale factor | |
275 | $pdf->setImageScale(PDF_IMAGE_SCALE_RATIO); | |
276 | ||
277 | return Response::create( | |
278 | $pdf->Output('', 'S'), | |
279 | 200, | |
280 | [ | |
281 | 'Content-Description' => 'File Transfer', | |
282 | 'Content-type' => 'application/pdf', | |
283 | 'Content-Disposition' => 'attachment; filename="'.$this->title.'.pdf"', | |
284 | 'Content-Transfer-Encoding' => 'binary', | |
285 | ] | |
286 | ); | |
287 | } | |
288 | ||
289 | /** | |
290 | * Inspired from CsvFileDumper. | |
291 | * | |
292 | * @return Response | |
293 | */ | |
294 | private function produceCsv() | |
295 | { | |
296 | $delimiter = ';'; | |
297 | $enclosure = '"'; | |
298 | $handle = fopen('php://memory', 'rb+'); | |
299 | ||
300 | fputcsv($handle, ['Title', 'URL', 'Content', 'Tags', 'MIME Type', 'Language', 'Creation date'], $delimiter, $enclosure); | |
301 | ||
302 | foreach ($this->entries as $entry) { | |
303 | fputcsv( | |
304 | $handle, | |
305 | [ | |
306 | $entry->getTitle(), | |
307 | $entry->getURL(), | |
308 | // remove new line to avoid crazy results | |
309 | str_replace(["\r\n", "\r", "\n"], '', $entry->getContent()), | |
310 | implode(', ', $entry->getTags()->toArray()), | |
311 | $entry->getMimetype(), | |
312 | $entry->getLanguage(), | |
313 | $entry->getCreatedAt()->format('d/m/Y h:i:s'), | |
314 | ], | |
315 | $delimiter, | |
316 | $enclosure | |
317 | ); | |
318 | } | |
319 | ||
320 | rewind($handle); | |
321 | $output = stream_get_contents($handle); | |
322 | fclose($handle); | |
323 | ||
324 | return Response::create( | |
325 | $output, | |
326 | 200, | |
327 | [ | |
328 | 'Content-type' => 'application/csv', | |
329 | 'Content-Disposition' => 'attachment; filename="'.$this->title.'.csv"', | |
330 | 'Content-Transfer-Encoding' => 'UTF-8', | |
331 | ] | |
332 | ); | |
333 | } | |
334 | ||
335 | /** | |
336 | * Dump a JSON file. | |
337 | * | |
338 | * @return Response | |
339 | */ | |
340 | private function produceJson() | |
341 | { | |
342 | return Response::create( | |
343 | $this->prepareSerializingContent('json'), | |
344 | 200, | |
345 | [ | |
346 | 'Content-type' => 'application/json', | |
347 | 'Content-Disposition' => 'attachment; filename="'.$this->title.'.json"', | |
348 | 'Content-Transfer-Encoding' => 'UTF-8', | |
349 | ] | |
350 | ); | |
351 | } | |
352 | ||
353 | /** | |
354 | * Dump a XML file. | |
355 | * | |
356 | * @return Response | |
357 | */ | |
358 | private function produceXml() | |
359 | { | |
360 | return Response::create( | |
361 | $this->prepareSerializingContent('xml'), | |
362 | 200, | |
363 | [ | |
364 | 'Content-type' => 'application/xml', | |
365 | 'Content-Disposition' => 'attachment; filename="'.$this->title.'.xml"', | |
366 | 'Content-Transfer-Encoding' => 'UTF-8', | |
367 | ] | |
368 | ); | |
369 | } | |
370 | ||
371 | /** | |
372 | * Dump a TXT file. | |
373 | * | |
374 | * @return Response | |
375 | */ | |
376 | private function produceTxt() | |
377 | { | |
378 | $content = ''; | |
379 | $bar = str_repeat('=', 100); | |
380 | foreach ($this->entries as $entry) { | |
381 | $content .= "\n\n".$bar."\n\n".$entry->getTitle()."\n\n".$bar."\n\n"; | |
382 | $content .= trim(preg_replace('/\s+/S', ' ', strip_tags($entry->getContent())))."\n\n"; | |
383 | } | |
384 | ||
385 | return Response::create( | |
386 | $content, | |
387 | 200, | |
388 | [ | |
389 | 'Content-type' => 'text/plain', | |
390 | 'Content-Disposition' => 'attachment; filename="'.$this->title.'.txt"', | |
391 | 'Content-Transfer-Encoding' => 'UTF-8', | |
392 | ] | |
393 | ); | |
394 | } | |
395 | ||
396 | /** | |
397 | * Return a Serializer object for producing processes that need it (JSON & XML). | |
398 | * | |
399 | * @param string $format | |
400 | * | |
401 | * @return Serializer | |
402 | */ | |
403 | private function prepareSerializingContent($format) | |
404 | { | |
405 | $serializer = SerializerBuilder::create()->build(); | |
406 | ||
407 | return $serializer->serialize( | |
408 | $this->entries, | |
409 | $format, | |
410 | SerializationContext::create()->setGroups(['entries_for_user']) | |
411 | ); | |
412 | } | |
413 | ||
414 | /** | |
415 | * Return a kind of footer / information for the epub. | |
416 | * | |
417 | * @param string $type Generator of the export, can be: tdpdf, PHPePub, PHPMobi | |
418 | * | |
419 | * @return string | |
420 | */ | |
421 | private function getExportInformation($type) | |
422 | { | |
423 | $info = str_replace('%EXPORT_METHOD%', $type, $this->footerTemplate); | |
424 | ||
425 | if ('tcpdf' === $type) { | |
426 | return str_replace('%IMAGE%', '<img src="'.$this->logoPath.'" />', $info); | |
427 | } | |
428 | ||
429 | return str_replace('%IMAGE%', '', $info); | |
430 | } | |
431 | } |