feat: Update UI to respect tag creation permissions

Added support for the `only_admin_can_create` flag in system tags.
The UI now hides the option to create tags when this flag is enabled, ensuring compliance with admin settings.

Signed-off-by: nfebe <fenn25.fn@gmail.com>

Author: nfebe

apps/systemtags/src/components/SystemTags.vue

@@ -51,6 +51,8 @@ import {
 	setTagForFile,
 } from '../services/files.js'
 
+import { loadState } from '@nextcloud/initial-state'
+
 import type { Tag, TagWithId } from '../types.js'
 
 export default Vue.extend({
@@ -188,6 +190,10 @@ export default Vue.extend({
 				this.sortedTags.unshift(createdTag)
 				this.selectedTags.push(createdTag)
 			} catch (error) {
+				if(loadState('settings', 'onlyAdminsCanCreateSystemTags', '1') === '1') {
+					showError(t('systemtags', 'System admin disabled tag creation. You can only use existing ones.'))
+					return
+				}
 				showError(t('systemtags', 'Failed to create tag'))
 			}
 			this.loading = false

apps/systemtags/src/files_actions/bulkSystemTagsAction.ts

@@ -10,6 +10,8 @@ import { isPublicShare } from '@nextcloud/sharing/public'
 import { spawnDialog } from '@nextcloud/dialogs'
 import { t } from '@nextcloud/l10n'
 
+import { loadState } from '@nextcloud/initial-state'
+
 import TagMultipleSvg from '@mdi/svg/svg/tag-multiple.svg?raw'
 
 /**
@@ -34,6 +36,10 @@ export const action = new FileAction({
 
 	// If the app is disabled, the action is not available anyway
 	enabled(nodes) {
+		if (loadState('settings', 'onlyAdminsCanCreateSystemTags', '1') === '1') {
+			return false
+		}
+
 		if (isPublicShare()) {
 			return false
 		}