Merge pull request #41738 from nextcloud/feat/hide-dav-search-provider-if-no-app

apps/dav/lib/Search/ContactsSearchProvider.php

 		return $this->l10n->t('Contacts');
 	}
 
-	public function getOrder(string $route, array $routeParameters): int {
-		if ($route === 'contacts.Page.index') {
-			return -1;
+	public function getOrder(string $route, array $routeParameters): ?int {
+		if ($this->appManager->isEnabledForUser('contacts')) {
+			return $route === 'contacts.Page.index' ? -1 : 25;
 		}
-		return 25;
+
+		return null;
 	}
 
 	public function search(IUser $user, ISearchQuery $query): SearchResult {

apps/dav/lib/Search/EventsSearchProvider.php

 	/**
 	 * @inheritDoc
 	 */
-	public function getOrder(string $route, array $routeParameters): int {
-		if ($route === 'calendar.View.index') {
-			return -1;
+	public function getOrder(string $route, array $routeParameters): ?int {
+		if ($this->appManager->isEnabledForUser('calendar')) {
+			return $route === 'calendar.View.index' ? -1 : 30;
 		}
-		return 30;
+
+		return null;
 	}
 
 	/**

apps/dav/lib/Search/TasksSearchProvider.php

 	/**
 	 * @inheritDoc
 	 */
-	public function getOrder(string $route, array $routeParameters): int {
-		if ($route === 'tasks.Page.index') {
-			return -1;
+	public function getOrder(string $route, array $routeParameters): ?int {
+		if ($this->appManager->isEnabledForUser('tasks')) {
+			return $route === 'tasks.Page.index' ? -1 : 35;
 		}
-		return 35;
+
+		return null;
 	}
 
 	/**