refactor(core): migrate web updater to Vue

Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

Author: susnux

build/frontend-legacy/webpack.modules.cjs

@@ -28,6 +28,7 @@ module.exports = {
 		'unsupported-browser-redirect': path.join(__dirname, 'core/src', 'unsupported-browser-redirect.js'),
 		public: path.join(__dirname, 'core/src', 'public.ts'),
 		'twofactor-request-token': path.join(__dirname, 'core/src', 'twofactor-request-token.ts'),
+		update: path.join(__dirname, 'core/src', 'update.ts'),
 	},
 	dashboard: {
 		main: path.join(__dirname, 'apps/dashboard/src', 'main.js'),

core/ajax/update.php

@@ -106,7 +106,6 @@ function (MigratorExecuteSqlEvent $event) use ($eventSource, $l): void {
 	});
 	$updater->listen('\OC\Updater', 'failure', function ($message) use ($eventSource, $config): void {
 		$eventSource->send('failure', $message);
-		$eventSource->close();
 		$config->setSystemValue('maintenance', false);
 	});
 	$updater->listen('\OC\Updater', 'setDebugLogLevel', function ($logLevel, $logLevelName) use ($eventSource, $l): void {

core/js/update.js

@@ -0,0 +1,20 @@
+/*!
+ * SPDX-FileCopyrightText: 2026 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+import { getCSPNonce } from '@nextcloud/auth'
+import { loadState } from '@nextcloud/initial-state'
+import Vue, { defineAsyncComponent } from 'vue'
+
+__webpack_nonce__ = getCSPNonce()
+
+const UpdaterAdmin = defineAsyncComponent(() => import('./views/UpdaterAdmin.vue'))
+const UpdaterAdminCli = defineAsyncComponent(() => import('./views/UpdaterAdminCli.vue'))
+
+const view = loadState('core', 'updaterView')
+const app = new Vue({
+	name: 'NextcloudUpdater',
+	render: (h) => view === 'adminCli' ? h(UpdaterAdminCli) : h(UpdaterAdmin),
+})
+app.$mount('#core-updater')