<?php class pluginOpenGraph extends Plugin { 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>'; $html .= '<input id="jsdefaultImage" name="defaultImage" type="text" value="'.$this->getValue('defaultImage').'" placeholder="https://">'; $html .= '</div>'; /* $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; } public function siteHead() { global $Url; global $Site; global $WHERE_AM_I; global $pages; global $page; $og = array( 'locale' =>$Site->locale(), 'type' =>'website', 'title' =>$Site->title(), 'description' =>$Site->description(), 'url' =>$Site->url(), 'image' =>'', 'siteName' =>$Site->title() ); switch ($WHERE_AM_I) { // The user filter by page 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); $content = $page->content(); break; // The user is in the homepage default: $content = ''; // The image it's from the first page if (isset($pages[0]) ) { $og['image'] = $pages[0]->coverImage($absolute=true); $content = $pages[0]->content(); } 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; $html .= '<meta property="og:siteName" content="'.$og['siteName'].'">'.PHP_EOL; // If the page doesn't have a coverImage try to get an image from the HTML content if (empty($og['image'])) { // Get the image from the content $src = DOM::getFirstImage($content); if ($src!==false) { $og['image'] = $src; } else { if (Text::isNotEmpty($this->getValue('defaultImage'))) { $og['image'] = $this->getValue('defaultImage'); } } } $html .= '<meta property="og:image" content="'.$og['image'].'">'.PHP_EOL; return $html; } }