feat(search): reduce search providers via core app config unified_search.providers_allowed

reduce search providers by setting core config value to unified_search.providers_allowed = [ 'files', 'setting' ]

./occ config:app:set --value '["files","settings"]' --type array core unified_search.providers_allowed

Signed-off-by: Misha M.-Kupriyanov <kupriyanov@strato.de>

lib/private/Search/SearchComposer.php

@@ -11,6 +11,7 @@ namespace OC\Search;
 use InvalidArgumentException;
 use OC\AppFramework\Bootstrap\Coordinator;
 use OC\Core\ResponseDefinitions;
+use OCP\IAppConfig;
 use OCP\IURLGenerator;
 use OCP\IUser;
 use OCP\Search\FilterDefinition;
@@ -24,7 +25,10 @@ use Psr\Container\ContainerExceptionInterface;
 use Psr\Container\ContainerInterface;
 use Psr\Log\LoggerInterface;
 use RuntimeException;
+use function array_filter;
 use function array_map;
+use function array_values;
+use function in_array;
 
 /**
  * Queries individual \OCP\Search\IProvider implementations and composes a
@@ -62,6 +66,7 @@ class SearchComposer {
 		private ContainerInterface $container,
 		private IURLGenerator $urlGenerator,
 		private LoggerInterface $logger,
+		private IAppConfig $appConfig,
 	) {
 		$this->commonFilters = [
 			IFilter::BUILTIN_TERM => new FilterDefinition(IFilter::BUILTIN_TERM, FilterDefinition::TYPE_STRING),
@@ -113,6 +118,8 @@ class SearchComposer {
 			}
 		}
 
+		$this->providers = $this->filterProviders($this->providers);
+
 		$this->loadFilters();
 	}
 
@@ -202,6 +209,23 @@ class SearchComposer {
 		return $providers;
 	}
 
+	/**
+	 * Filter providers based on 'unified_search.providers_allowed' core app config array
+	 * @param array $providers
+	 * @return array
+	 */
+	private function filterProviders(array $providers): array {
+		$allowedProviders = $this->appConfig->getValueArray('core', 'unified_search.providers_allowed');
+
+		if (empty($allowedProviders)) {
+			return $providers;
+		}
+
+		return array_values(array_filter($providers, function ($p) use ($allowedProviders) {
+			return in_array($p['id'], $allowedProviders);
+		}));
+	}
+
 	private function fetchIcon(string $appId, string $providerId): string {
 		$icons = [
 			[$providerId, $providerId . '.svg'],