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