refactor(updatenotification): Migrate legacy code

1. Remove hook usage and just provide an initial state
2. Replace jQuery code with modern non-deprecated frontend code

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

1 files changed, 24 insertions, 0 deletions

diff --git a/apps/updatenotification/src/update-notification-legacy.ts b/apps/updatenotification/src/update-notification-legacy.ts
new file mode 100644
index 00000000000..5809c1761dc
--- /dev/null
+++ b/apps/updatenotification/src/update-notification-legacy.ts
@@ -0,0 +1,24 @@
+/**
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+import { showInfo } from '@nextcloud/dialogs'
+import { loadState } from '@nextcloud/initial-state'
+import { t } from '@nextcloud/l10n'
+
+interface IUpdateNotificationState {
+	updateLink: string
+	updateVersion: string
+}
+
+/**
+ * This only gets loaded if an update is available and the notifications app is not enabled for the user.
+ */
+window.addEventListener('DOMContentLoaded', function() {
+	const { updateLink, updateVersion } = loadState<IUpdateNotificationState>('updatenotification', 'updateState')
+	const text = t('core', '{version} is available. Get more information on how to update.', { version: updateVersion })
+
+	// On click open the update link in a new tab
+	showInfo(text, { onClick: () => window.open(updateLink, '_blank') })
+})