Method renderArticle

public static function renderArticle($id, $format = 'html', $default = '', $changeLang = 0)
{
    $o = '';
    if ((int) $id > 0) {
        $db = Factory::getDBO();
        $query = $db->getQuery(true);
        //$query = 'SELECT a.introtext, a.fulltext FROM #__content AS a WHERE id = ' . (int)$id;
        $query = $db->getQuery(true)->select('a.introtext, a.fulltext')->from($db->quoteName('#__content', 'a'))->where([$db->quoteName('a.id') . ' = ' . (int) $id]);
        /*if (Associations::isEnabled())
                    {
                        $subQuery = $db->getQuery(true)
                            ->select('COUNT(' . $db->quoteName('asso1.id') . ') > 1')
                            ->from($db->quoteName('#__associations', 'asso1'))
                            ->join('INNER', $db->quoteName('#__associations', 'asso2'), $db->quoteName('asso1.key') . ' = ' . $db->quoteName('asso2.key'))
                            ->where(
                                [
                                    $db->quoteName('asso1.id') . ' = ' . $db->quoteName('a.id'),
                                    $db->quoteName('asso1.context') . ' = ' . $db->quote('com_content.item'),
                                ]
                            );
        
                        $query->select('(' . $subQuery . ') AS ' . $db->quoteName('association'));
                    }*/
        $db->setQuery((string) $query);
        $a = $db->loadObject();
        // Associated article by language - lang, assoc
        if (Associations::isEnabled()) {
            $itemAssociations = array();
            if ($id != null) {
                $associations = JLanguageAssociations::getAssociations('com_content', '#__content', 'com_content.item', $id);
                $lang = Factory::getLanguage();
                $language = $lang->getTag();
                if (isset($language) && $language != '*' && $language != '') {
                    foreach ($associations as $tag => $association) {
                        if ($language == $tag && isset($association->id)) {
                            $query = $db->getQuery(true)->select('a.introtext, a.fulltext')->from($db->quoteName('#__content', 'a'))->where([$db->quoteName('a.id') . ' = ' . (int) $association->id]);
                            $db->setQuery((string) $query);
                            $a = $db->loadObject();
                        }
                    }
                }
            }
        }
        $o = $a->introtext . $a->fulltext;
        // Disable emailclock for PDF | MAIL
        if ($format == 'pdf' || $format == 'mail') {
            $o = '{emailcloak=off}' . $o;
        }
        $o = HTMLHelper::_('content.prepare', $o);
        if ($changeLang == 1) {
            PluginHelper::importPlugin('system');
            PluginHelper::importPlugin('plgSystemMultilanguagesck');
            Factory::getApplication()->triggerEvent('onChangeText', array(&$o));
        }
        if ($format == 'pdf' || $format == 'text') {
            // Remove Javascript for PDF
            $o = preg_replace('/<script\\b[^>]*>(.*?)<\\/script>/is', "", $o);
            // Remove mailto - problematic for TCPDF
            $o = preg_replace("~<a\\s+href=[\\'|\"]mailto:(.*?)[\\'|\"].*?>.*?</a>~", "\$1", $o);
        }
        if ($format == 'text') {
            $o = PhocacartText::filterValue($o, 'text');
        }
    }
    // If no text is set by article and there is default value
    if ($o == '' && $default != '') {
        return $default;
    }
    return $o;
}