<?php
namespace Wallabag\CoreBundle\Helper;
use PHPePub\Core\EPub;
use PHPePub\Core\Structure\OPF\DublinCore;
class EntriesExport
{
private $format;
private $method;
private $title;
private $entries;
private $authors = array('wallabag');
private $language;
private $tags;
public function __construct($entries)
{
$this->entries = $entries;
foreach ($entries as $entry) {
$this->tags[] = $entry->getTags();
}
if (count($entries) === 1) {
$this->language = $entries[0]->getLanguage();
}
}
/**
* Sets the category of which we want to get articles, or just one entry.
*
* @param string $method Method to get articles
*/
public function setMethod($method)
{
$this->method = $method;
switch ($this->method) {
case 'All':
$this->title = 'All Articles';
break;
case 'Unread':
$this->title = 'Unread articles';
break;
case 'Starred':
$this->title = 'Starred articles';
break;
case 'Archive':
$this->title = 'Archived articles';
break;
case 'entry':
$this->title = $this->entries[0]->getTitle();
break;
default:
break;
}
}
/**
* Sets the output format.
*
* @param string $format
*/
public function exportAs($format)
{
$this->format = $format;
switch ($this->format) {
case 'epub':
$this->produceEpub();
break;
case 'mobi':
$this->produceMobi();
break;
case 'pdf':
$this->producePDF();
break;
case 'csv':
$this->produceCSV();
break;
default:
break;
}
}
private function produceEpub()
{
/*
* Start and End of the book
*/
$content_start =
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
."<html xmlns=\"http://www.w3.org/1999/xhtml\" xmlns:epub=\"http://www.idpf.org/2007/ops\">\n"
.'<head>'
."<meta http-equiv=\"Default-Style\" content=\"text/html; charset=utf-8\" />\n"
.'<title>'._('wallabag articles book')."</title>\n"
."</head>\n"
."<body>\n";
$bookEnd = "</body>\n</html>\n";
$book = new EPub(EPub::BOOK_VERSION_EPUB3);
/*
* Book metadata
*/
$book->setTitle($this->title);
$book->setIdentifier($this->title, EPub::IDENTIFIER_URI); // Could also be the ISBN number, prefered for published books, or a UUID.
$book->setLanguage($this->language); // 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.
$book->setDescription(_('Some articles saved on my wallabag'));
foreach ($this->authors as $author) {
$book->setAuthor($author, $author);
}
$book->setPublisher('wallabag', 'wallabag'); // I hope this is a non existant address :)
$book->setDate(time()); // Strictly not needed as the book date defaults to time().
$book->setSourceURL("http://$_SERVER[HTTP_HOST]");
$book->addDublinCoreMetadata(DublinCore::CONTRIBUTOR, 'PHP');
$book->addDublinCoreMetadata(DublinCore::CONTRIBUTOR, 'wallabag');
/*
* Front page
*/
$book->setCoverImage('Cover.png', file_get_contents('themes/_global/img/appicon/apple-touch-icon-152.png'), 'image/png');
$cover = $content_start.'<div style="text-align:center;"><p>'._('Produced by wallabag with PHPePub').'</p><p>'._('Please open <a href="https://github.com/wallabag/wallabag/issues" >an issue</a> if you have trouble with the display of this E-Book on your device.').'</p></div>'.$bookEnd;
$book->addChapter('Notices', 'Cover2.html', $cover);
$book->buildTOC();
/*
* Adding actual entries
*/
foreach ($this->entries as $entry) { //set tags as subjects
foreach ($this->tags as $tag) {
$book->setSubject($tag['value']);
}
$chapter = $content_start.$entry->getContent().$bookEnd;
$book->addChapter($entry->getTitle(), htmlspecialchars($entry->getTitle()).'.html', $chapter, true, EPub::EXTERNAL_REF_ADD);
}
$book->finalize();
$book->sendBook($this->title);
}
private function produceMobi()
{
$mobi = new \MOBI();
$content = new \MOBIFile();
/*
* Book metadata
*/
$content->set('title', $this->title);
$content->set('author', implode($this->authors));
$content->set('subject', $this->title);
/*
* Front page
*/
$content->appendParagraph('<div style="text-align:center;" ><p>'._('Produced by wallabag with PHPMobi').'</p><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></div>');
$content->appendImage(imagecreatefrompng('themes/_global/img/appicon/apple-touch-icon-152.png'));
$content->appendPageBreak();
/*
* Adding actual entries
*/
foreach ($this->entries as $entry) {
$content->appendChapterTitle($entry->getTitle());
$content->appendParagraph($entry->getContent());
$content->appendPageBreak();
}
$mobi->setContentProvider($content);
// the browser inside Kindle Devices doesn't likes special caracters either, we limit to A-z/0-9
$this->title = preg_replace('/[^A-Za-z0-9\-]/', '', $this->title);
// we offer file to download
$mobi->download($this->title.'.mobi');
}
private function producePDF()
{
$pdf = new \TCPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false);
/*
* Book metadata
*/
$pdf->SetCreator(PDF_CREATOR);
$pdf->SetAuthor('wallabag');
$pdf->SetTitle($this->title);
$pdf->SetSubject('Articles via wallabag');
$pdf->SetKeywords('wallabag');
/*
* Front page
*/
$pdf->AddPage();
$intro = '<h1>'.$this->title.'</h1><div style="text-align:center;" >
<p>'._('Produced by wallabag with tcpdf').'</p>
<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>
<img src="themes/_global/img/appicon/apple-touch-icon-152.png" /></div>';
$pdf->writeHTMLCell(0, 0, '', '', $intro, 0, 1, 0, true, '', true);
/*
* Adding actual entries
*/
foreach ($this->entries as $entry) {
foreach ($this->tags as $tag) {
$pdf->SetKeywords($tag['value']);
}
$pdf->AddPage();
$html = '<h1>'.$entry->getTitle().'</h1>';
$html .= $entry->getContent();
$pdf->writeHTMLCell(0, 0, '', '', $html, 0, 1, 0, true, '', true);
}
// set image scale factor
$pdf->setImageScale(PDF_IMAGE_SCALE_RATIO);
$pdf->Output($this->title.'.pdf', 'D');
}
private function produceCSV()
{
header('Content-type: application/csv');
header('Content-Disposition: attachment; filename="'.$this->title.'.csv"');
header('Content-Transfer-Encoding: UTF-8');
$output = fopen('php://output', 'a');
fputcsv($output, array('Title', 'URL', 'Content', 'Tags', 'MIME Type', 'Language'));
foreach ($this->entries as $entry) {
fputcsv($output, array($entry->getTitle(),
$entry->getURL(),
$entry->getContent(),
implode(', ', $entry->getTags()->toArray()),
$entry->getMimetype(),
$entry->getLanguage(), ));
}
fclose($output);
exit();
}
}
