ussr-hubzilla-addons/link/Mod_Link.php

<?php

namespace Zotlabs\Module;

use Zotlabs\Web\Controller;

class Link extends Controller {

	function init() {
	}

	function get() {

		$item_id = ((argc() > 1) ? intval(argv(1)) : 0);

		if(! $item_id) {
			\App::$error = 404;
			notice( t('Item not found.') . EOL);
			return;
		}

		$r = q("select uuid, mid from item where id = %d limit 1",
			intval($item_id)
		);

		if (!$r) {
			notice( t('Item not found.') . EOL);
			return;
		}

		$identifier = $r[0]['uuid'] ?? '';

		if (!$identifier) {
			if ($r[0]['mid']) {
				$identifier = 'b64.' . base64url_encode($r[0]['mid']);
			}
		}

		if (!$identifier) {
			notice( t('Item not found.') . EOL);
			return;
		}

		$old_argv = \App::$argv;
		$old_argc = \App::$argc;

		\App::$argv = ['display', $identifier];
		\App::$argc = 2;

		$display = new Display();
		$output = $display->get();

		\App::$argv = $old_argv;
		\App::$argc = $old_argc;
		
		$separator = ' - ';
		$page_title = \App::$page['title'];
		if (substr($page_title, -strlen($separator)) === $separator) {
			$page_title = substr($page_title, 0, -strlen($separator));
		}
		\App::$page['title'] = $page_title;

		return $output;
	}

}