refactor!: retire legacy administration

BREAKING CHANGE: legacy management routes now fail closed and the legacy helper API is removed.

restorebackup.php

@@ -23,42 +23,8 @@
  */
 
 require_once(__DIR__ . '/../../config.php');
-require_once(__DIR__ . '/classes/service_form.php');
-require_once(__DIR__ . '/lib.php');
 
-require_once($CFG->libdir . '/adminlib.php');
+require_login();
+require_capability('moodle/site:config', context_system::instance());
 
-/* Link generation */
-$baseurl = new moodle_url('/local/webhooks/restorebackup.php');
-$managerservice = new moodle_url('/local/webhooks/index.php');
-
-/* Configure the context of the page */
-admin_externalpage_setup('local_webhooks', '', null, $baseurl);
-$context = context_system::instance();
-
-/* Create an editing form */
-$mform = new service_backup_form($PAGE->url);
-
-/* Cancel processing */
-if ($mform->is_cancelled()) {
-    redirect($managerservice);
-}
-
-/* Processing the received file */
-if (!empty($data = $mform->get_data())) {
-    $content = $mform->get_file_content('backupfile');
-    local_webhooks_restore_backup($content);
-    redirect($managerservice, new lang_string('restorefinished', 'local_webhooks'));
-}
-
-/* The page title */
-$titlepage = new lang_string('backup', 'local_webhooks');
-$PAGE->navbar->add($titlepage);
-$PAGE->set_heading($titlepage);
-$PAGE->set_title($titlepage);
-echo $OUTPUT->header();
-
-/* Displays the form */
-$mform->display();
-
-echo $OUTPUT->footer();
+throw new moodle_exception('legacyuidisabled', 'local_webhooks');