shimmie2/ext/site_description/main.php

<?php

declare(strict_types=1);

namespace Shimmie2;

use function MicroHTML\{META};

class SiteDescription extends Extension
{
    public function onPageRequest(PageRequestEvent $event): void
    {
        global $config, $page;
        if (!empty($config->get_string("site_description"))) {
            $description = $config->get_string("site_description");
            $page->add_html_header(META([
                'name' => 'description',
                'content' => $description
            ]));
        }
        if (!empty($config->get_string("site_keywords"))) {
            $keywords = $config->get_string("site_keywords");
            $page->add_html_header(META([
                'name' => 'keywords',
                'content' => $keywords
            ]));
        }
    }

    public function onSetupBuilding(SetupBuildingEvent $event): void
    {
        $sb = $event->panel->create_new_block("Site Description");
        $sb->add_text_option("site_description", "Description: ");
        $sb->add_text_option("site_keywords", "<br>Keywords: ");
    }
}