<?php
/**
 * includestatsnumber plugin
 * This plugin allows you to insert a statistics number to any joomla article
 * Author: tsampikos
 * License: GNU/GPL http://www.gnu.org/copyleft/gpl.html
 */

defined( '_JEXEC' ) or die( 'Direct Access to this location is not allowed.' );

jimport( 'joomla.plugin.plugin' );
jimport( 'joomla.log.log' );

class plgContentIncludestatsnumbers extends JPlugin {
    const CACHE_GROUP = "openaire.stats.plugin";

    public function onContentPrepare( $context, &$article, &$params, $page = 0 ) {
        $regex = '\{include_number\s+[A-Za-z0-9_]+\s*\}';
        $regex = "/$regex/";
        preg_match_all($regex, $article->text, $matches, PREG_SET_ORDER);
        if($matches)
        {
            foreach ($matches as $match)
            {
                preg_match('/\s+[A-Za-z0-9_]+\s*/', $match[0], $id_matches);
                $number = $this->getNumber($this->params->get('stats_api_url'), trim($id_matches[0]));
                $article->text = str_replace($match[0], $number, $article->text);
            }
        }
        return true;
    }

    public function getNumber($api_url, $id) {
        $url = $api_url . 'numbers/' . strtolower($id);
        $response = json_decode(file_get_contents($url));
        if($response->code == 200) {
            return $response->statistics;
        }
        return "?";
    }
}

?>