Method getRoute

/**
 * A method to get the route for a specific item
 *
 * @param   integer  $id         Value of the primary key for the item in its content table
 * @param   string   $typealias  The type_alias for the item being routed. Of the form extension.view.
 * @param   string   $link       The link to be routed
 * @param   string   $language   The language of the content for multilingual sites
 * @param   integer  $catid      Optional category id
 *
 * @return  string  The route of the item
 *
 * @since   3.1
 */
public function getRoute($id, $typealias, $link = '', $language = null, $catid = null)
{
    $typeExploded = explode('.', $typealias);
    if (isset($typeExploded[1])) {
        $this->view = $typeExploded[1];
        $this->extension = $typeExploded[0];
    } else {
        $this->view = Factory::getApplication()->input->getString('view');
        $this->extension = Factory::getApplication()->input->getCmd('option');
    }
    $name = ucfirst(substr_replace($this->extension, '', 0, 4));
    $needles = array();
    if (isset($this->view)) {
        $needles[$this->view] = array((int) $id);
    }
    if (empty($link)) {
        // Create the link
        $link = 'index.php?option=' . $this->extension . '&view=' . $this->view . '&id=' . $id;
    }
    if ($catid > 1) {
        $categories = Categories::getInstance($name);
        if ($categories) {
            $category = $categories->get((int) $catid);
            if ($category) {
                $needles['category'] = array_reverse($category->getPath());
                $needles['categories'] = $needles['category'];
                $link .= '&catid=' . $catid;
            }
        }
    }
    // Deal with languages only if needed
    if (!empty($language) && $language !== '*' && Multilanguage::isEnabled()) {
        $link .= '&lang=' . $language;
        $needles['language'] = $language;
    }
    if ($item = $this->findItem($needles)) {
        $link .= '&Itemid=' . $item;
    }
    return $link;
}