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<?php
namespace dokuwiki\Feed;
use dokuwiki\ChangeLog\MediaChangeLog;
use dokuwiki\File\MediaFile;
use dokuwiki\Ui\Media\Display;
class FeedMediaProcessor extends FeedItemProcessor
{
/** @inheritdoc */
public function getURL($linkto)
{
switch ($linkto) {
case 'page':
$opt = [
'image' => $this->getId(),
'ns' => getNS($this->getId()),
'rev' => $this->getRev()
];
break;
case 'rev':
$opt = [
'image' => $this->getId(),
'ns' => getNS($this->getId()),
'rev' => $this->getRev(),
'tab_details' => 'history'
];
break;
case 'current':
$opt = [
'image' => $this->getId(),
'ns' => getNS($this->getId())
];
break;
case 'diff':
default:
$opt = [
'image' => $this->getId(),
'ns' => getNS($this->getId()),
'rev' => $this->getRev(),
'tab_details' => 'history',
'media_do' => 'diff'
];
}
return media_managerURL($opt, '&', true);
}
public function getBody($content)
{
switch ($content) {
case 'diff':
case 'htmldiff':
$prev = $this->getPrev();
if ($prev) {
if ($this->isExisting()) {
$src1 = new MediaFile($this->getId(), $prev);
$src2 = new MediaFile($this->getId());
} else {
$src1 = new MediaFile($this->getId(), $prev);
$src2 = null;
}
} else {
$src1 = null;
$src2 = new MediaFile($this->getId());
}
return $this->createDiffTable($src1, $src2);
case 'abstract':
case 'html':
default:
$src = new Display(new MediaFile($this->getId()));
return $this->cleanHTML($src->getPreviewHtml(500, 500));
}
}
/**
* @inheritdoc
* @todo read exif keywords
*/
public function getCategory()
{
return (array)getNS($this->getId());
}
/**
* Get the revision timestamp of this page
*
* Note: we only handle most current revisions in feeds, so the revision is usually just the
* lastmodifed timestamp of the page file. However, if the page does not exist, we need to
* determine the revision from the changelog.
* @return int
*/
public function getRev()
{
$rev = parent::getRev();
if ($rev) return $rev;
if (media_exists($this->id)) {
$this->data['rev'] = filemtime(mediaFN($this->id));
$this->data['exists'] = true;
} else {
$this->loadRevisions();
}
return $this->data['rev'];
}
/**
* Get the previous revision timestamp of this page
*
* @return int|null The previous revision or null if there is none
*/
public function getPrev()
{
if ($this->data['prev'] ?? 0) return $this->data['prev'];
$this->loadRevisions();
return $this->data['prev'];
}
/**
* Does this page exist?
*
* @return bool
*/
public function isExisting()
{
if (!isset($this->data['exists'])) {
$this->data['exists'] = media_exists($this->id);
}
return $this->data['exists'];
}
/**
* Load the current and previous revision from the changelog
* @return void
*/
protected function loadRevisions()
{
$changelog = new MediaChangeLog($this->id);
$revs = $changelog->getRevisions(0, 2); // FIXME check that this returns the current one correctly
if (!isset($this->data['rev'])) {
// prefer an already set date, only set if missing
// it should usally not happen that neither is available
$this->data['rev'] = $revs[0] ?? 0;
}
// a previous revision might not exist
$this->data['prev'] = $revs[1] ?? null;
}
/**
* Create a table showing the two media files
*
* @param MediaFile|null $src1
* @param MediaFile|null $src2
* @return string
*/
protected function createDiffTable($src1, $src2)
{
global $lang;
$content = '<table>';
$content .= '<tr>';
$content .= '<th width="50%">' . ($src1 ? $src1->getRev() : '') . '</th>';
$content .= '<th width="50%">' . $lang['current'] . '</th>';
$content .= '</tr>';
$content .= '<tr>';
$content .= '<td align="center">';
if ($src1) {
$display = new Display($src1);
$display->getPreviewHtml(300, 300);
}
$content .= '</td>';
$content .= '<td align="center">';
if ($src2) {
$display = new Display($src2);
$display->getPreviewHtml(300, 300);
}
$content .= '</td>';
$content .= '</tr>';
$content .= '</table>';
return $this->cleanHTML($content);
}
}
|
