bludit/bl-plugins/opengraph/plugin.php

108 lines
3.1 KiB
PHP
Raw Normal View History

2015-06-03 03:17:09 +02:00
<?php
class pluginOpenGraph extends Plugin {
public function init()
{
// Fields and default values for the database of this plugin
$this->dbFields = array(
'defaultImage'=>'',
'fbAppId'=>''
);
}
2015-11-28 23:46:23 +01:00
public function form()
{
global $L;
2018-07-02 00:24:53 +02:00
$html = '<div class="alert alert-primary" role="alert">';
$html .= $this->description();
$html .= '</div>';
$html .= '<div>';
$html .= '<label>'.$L->get('Default image').'</label>';
2017-10-07 21:49:41 +02:00
$html .= '<input id="jsdefaultImage" name="defaultImage" type="text" value="'.$this->getValue('defaultImage').'" placeholder="https://">';
$html .= '<span class="tip">'.$L->g('set-a-default-image-for-content').'</span>';
$html .= '</div>';
$html .= '<div>';
$html .= '<label>'.$L->get('Facebook App ID').'</label>';
$html .= '<input name="fbAppId" type="text" value="'.$this->getValue('fbAppId').'" placeholder="App ID">';
$html .= '<span class="tip">'.$L->g('set-your-facebook-app-id').'</span>';
2017-10-07 21:49:41 +02:00
$html .= '</div>';
return $html;
}
2015-08-07 04:13:55 +02:00
public function siteHead()
2015-06-03 03:17:09 +02:00
{
global $url;
global $site;
global $WHERE_AM_I;
global $page;
global $content;
2015-08-07 04:13:55 +02:00
2015-06-03 03:17:09 +02:00
$og = array(
'locale' =>$site->locale(),
'type' =>'website',
'title' =>$site->title(),
'description' =>$site->description(),
'url' =>$site->url(),
'image' =>'',
'siteName' =>$site->title()
2015-06-03 03:17:09 +02:00
);
switch ($WHERE_AM_I) {
2016-06-07 02:11:19 +02:00
// The user filter by page
2015-06-03 03:17:09 +02:00
case 'page':
$og['type'] = 'article';
$og['title'] = $page->title();
$og['description'] = $page->description();
$og['url'] = $page->permalink($absolute=true);
$og['image'] = $page->coverImage($absolute=true);
2015-11-28 23:46:23 +01:00
$pageContent = $page->content();
2015-11-28 23:46:23 +01:00
break;
2016-06-07 02:11:19 +02:00
// The user is in the homepage
2015-11-28 23:46:23 +01:00
default:
$pageContent = '';
if (Text::isNotEmpty($this->getValue('defaultImage'))) {
$og['image'] = $this->getValue('defaultImage');
}
elseif (isset($content[0]) ) {
$og['image'] = $content[0]->coverImage($absolute=true);
$pageContent = $content[0]->content();
2016-01-08 04:04:59 +01:00
}
2015-06-03 03:17:09 +02:00
break;
}
$html = PHP_EOL.'<!-- Open Graph -->'.PHP_EOL;
$html .= '<meta property="og:locale" content="'.$og['locale'].'">'.PHP_EOL;
$html .= '<meta property="og:type" content="'.$og['type'].'">'.PHP_EOL;
$html .= '<meta property="og:title" content="'.$og['title'].'">'.PHP_EOL;
$html .= '<meta property="og:description" content="'.$og['description'].'">'.PHP_EOL;
$html .= '<meta property="og:url" content="'.$og['url'].'">'.PHP_EOL;
$html .= '<meta property="og:site_name" content="'.$og['siteName'].'">'.PHP_EOL;
2015-06-03 03:17:09 +02:00
// If the page doesn't have a coverImage try to get an image from the HTML content
if (empty($og['image'])) {
2016-01-08 04:04:59 +01:00
// Get the image from the content
$src = DOM::getFirstImage($pageContent);
if ($src!==false) {
$og['image'] = $src;
} else {
2017-10-07 21:49:41 +02:00
if (Text::isNotEmpty($this->getValue('defaultImage'))) {
$og['image'] = $this->getValue('defaultImage');
}
2016-01-08 04:04:59 +01:00
}
}
$html .= '<meta property="og:image" content="'.$og['image'].'">'.PHP_EOL;
if (Text::isNotEmpty($this->getValue('fbAppId'))) {
$html .= '<meta property="fb:app_id" content="'. $this->getValue('fbAppId').'">'.PHP_EOL;
}
2015-06-03 03:17:09 +02:00
return $html;
}
2015-11-28 23:46:23 +01:00
}