2017-07-11 23:53:53 +02:00
|
|
|
<?php
|
|
|
|
|
2017-08-05 13:50:06 +02:00
|
|
|
class pluginTwitterCards extends Plugin {
|
2017-07-11 23:53:53 +02:00
|
|
|
|
2017-10-07 02:45:03 +02:00
|
|
|
public function init()
|
|
|
|
{
|
|
|
|
// Fields and default values for the database of this plugin
|
|
|
|
$this->dbFields = array(
|
|
|
|
'defaultImage'=>''
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
|
|
|
public function form()
|
|
|
|
{
|
|
|
|
global $Language;
|
|
|
|
|
|
|
|
$html = '<div>';
|
|
|
|
$html .= '<label>'.$Language->get('Default image').'</label>';
|
|
|
|
$html .= '<select name="defaultImage">';
|
|
|
|
|
|
|
|
$images = Filesystem::listFiles(PATH_UPLOADS);
|
|
|
|
foreach ($images as $image) {
|
|
|
|
$base = basename($image);
|
|
|
|
$html .= '<option value="'.$base.'" '.(($this->getValue('defaultImage')==$base)?'selected':'').'>'.$base.'</option>';
|
|
|
|
}
|
|
|
|
|
|
|
|
$html .= '</select>';
|
|
|
|
$html .= '</div>';
|
|
|
|
|
|
|
|
return $html;
|
|
|
|
}
|
|
|
|
|
2017-07-11 23:53:53 +02:00
|
|
|
public function siteHead()
|
|
|
|
{
|
|
|
|
global $Url;
|
|
|
|
global $Site;
|
|
|
|
global $WHERE_AM_I;
|
|
|
|
global $pages;
|
|
|
|
global $page;
|
|
|
|
|
|
|
|
$data = array(
|
|
|
|
'card' =>'summary',
|
|
|
|
'site' =>'',
|
|
|
|
'title' =>$Site->title(),
|
|
|
|
'description' =>$Site->description(),
|
|
|
|
'image' =>''
|
|
|
|
);
|
|
|
|
|
|
|
|
switch($WHERE_AM_I) {
|
|
|
|
// The user filter by page
|
|
|
|
case 'page':
|
|
|
|
$data['title'] = $page->title();
|
|
|
|
$data['description'] = $page->description();
|
|
|
|
$data['image'] = $page->coverImage($absolute=true);
|
|
|
|
|
|
|
|
$content = $page->content();
|
|
|
|
break;
|
|
|
|
|
|
|
|
// The user is in the homepage
|
|
|
|
default:
|
|
|
|
$content = '';
|
|
|
|
// The image it's from the first page
|
|
|
|
if(isset($pages[0]) ) {
|
|
|
|
$data['image'] = $pages[0]->coverImage($absolute=true);
|
|
|
|
$content = $pages[0]->content();
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2017-08-05 13:50:06 +02:00
|
|
|
$html = PHP_EOL.'<!-- Twitter Cards -->'.PHP_EOL;
|
2017-07-11 23:53:53 +02:00
|
|
|
$html .= '<meta property="twitter:card" content="'.$data['card'].'">'.PHP_EOL;
|
|
|
|
$html .= '<meta property="twitter:site" content="'.$data['site'].'">'.PHP_EOL;
|
|
|
|
$html .= '<meta property="twitter:title" content="'.$data['title'].'">'.PHP_EOL;
|
|
|
|
$html .= '<meta property="twitter:description" content="'.$data['description'].'">'.PHP_EOL;
|
|
|
|
|
|
|
|
// If the page doesn't have a coverImage try to get an image from the HTML content
|
|
|
|
if( empty($data['image']) ) {
|
|
|
|
// Get the image from the content
|
|
|
|
$src = $this->getImage($content);
|
2017-10-07 02:45:03 +02:00
|
|
|
if ($src!==false) {
|
|
|
|
$og['image'] = $src;
|
|
|
|
} else {
|
|
|
|
$og['image'] = DOMAIN_UPLOADS.$this->getValue('defaultImage');
|
2017-07-11 23:53:53 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
$html .= '<meta property="twitter:image" content="'.$data['image'].'">'.PHP_EOL;
|
|
|
|
return $html;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Returns the first image from the HTML content
|
|
|
|
private function getImage($content)
|
|
|
|
{
|
|
|
|
$dom = new DOMDocument();
|
|
|
|
$dom->loadHTML('<meta http-equiv="content-type" content="text/html; charset=utf-8">'.$content);
|
|
|
|
$finder = new DomXPath($dom);
|
|
|
|
|
|
|
|
$images = $finder->query("//img");
|
|
|
|
|
|
|
|
if($images->length>0) {
|
|
|
|
// First image from the list
|
|
|
|
$image = $images->item(0);
|
|
|
|
// Get value from attribute src
|
|
|
|
$imgSrc = $image->getAttribute('src');
|
|
|
|
// Returns the image src
|
|
|
|
return $imgSrc;
|
|
|
|
}
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
}
|