adlerka.top/lib/navpages.php

<?php

function generateNavigation()
{
    global $routerConfig;
    global $routerRequest;

    $site_dirs = array_diff(scandir($routerConfig["static_page_dir"]), array('.', '..'));

    $nav_out = "";

    foreach ($site_dirs as $site_dir) {
        $pages_dir = array_diff(scandir($routerConfig["static_page_dir"] . $site_dir), array('.', '..'));

        $site_name = str_replace("_", " ", $site_dir);
        if ($site_name == "global") {
            $site_name = "misc";
            $site_dir = $routerConfig["default_page"];
        }
        $site_name = ucfirst($site_name);

        $site_location = $routerRequest["protocol"] . $site_dir . "." . $routerRequest["domain"] . "." . $routerRequest["tld"] . "/" . $routerConfig["default_page"];

        if ($routerRequest["subdomain"] == $site_dir) {
            //this is the current page
            $site_class = "class=\"navsite_link active\"";
        }
        else{
            $site_class = "class=\"navsite_link\"";
        }

        $navpages = "";
        foreach ($pages_dir as $page_dir) {
            $page_dir = explode(".", $page_dir)[0];
            $page_class = "class=\"navpage_link\"";
            if ($routerRequest["subdomain"] == $site_dir && $routerRequest["page_name"] == $page_dir) {
                $page_class = "class=\"navpage_link active\"";
            }

            $page_location = $routerRequest["protocol"] . $site_dir . "." . $routerRequest["domain"] . "." . $routerRequest["tld"] . "/" . $page_dir;

            $page_name = str_replace("_", " ", $page_dir);
            $page_name = explode(".", $page_name)[0];
            $page_name = ucfirst($page_name);

            $navpages .= "<li class='navpage_item'><a href='$page_location' $page_class>$page_name</a></li>";
        }
        $nav_out .= "<li class='navsite_item'><a href='$site_location' $site_class>$site_name</a><ul class='navpage_list'>$navpages</ul></li>";
    }

    return $nav_out;
}