fix(unified-search): Remove hard-coded search result limit

A change added in https://github.com/nextcloud/server/pull/45317 introduced
a hard stop (25) that prevents full search results from showing up.

If there are more than 25 search results for a query only 25 can be seen.

So two main issues:

- Only 25 results can be seen in total no matter what.
- Breaks web client pagination, which typically adds 5 results per request.

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

core/AppInfo/ConfigLexicon.php

@@ -34,6 +34,7 @@ class ConfigLexicon implements ILexicon {
 	public const USER_TIMEZONE = 'timezone';
 
 	public const UNIFIED_SEARCH_MIN_SEARCH_LENGTH = 'unified_search_min_search_length';
+	public const UNIFIED_SEARCH_MAX_RESULTS_PER_REQUEST = 'unified_search_max_results_per_request';
 
 	public const LASTCRON_TIMESTAMP = 'lastcron';
 
@@ -93,6 +94,7 @@ class ConfigLexicon implements ILexicon {
 			new Entry(self::OCM_DISCOVERY_ENABLED, ValueType::BOOL, true, 'enable/disable OCM', lazy: true),
 			new Entry(self::OCM_INVITE_ACCEPT_DIALOG, ValueType::STRING, '', 'route to local invite accept dialog', lazy: true, note: 'set as empty string to disable feature'),
 			new Entry(self::UNIFIED_SEARCH_MIN_SEARCH_LENGTH, ValueType::INT, 1, 'Minimum search length to trigger the request', lazy: false, rename: 'unified-search.min-search-length'),
+			new Entry(self::UNIFIED_SEARCH_MAX_RESULTS_PER_REQUEST, ValueType::INT, 25, 'Maximum results returned per search request', lazy: false, rename: 'unified-search.max-results-per-request'),
 		];
 	}
 

core/Controller/UnifiedSearchController.php

@@ -9,6 +9,8 @@ declare(strict_types=1);
 namespace OC\Core\Controller;
 
 use InvalidArgumentException;
+use OC\Core\AppInfo\Application;
+use OC\Core\AppInfo\ConfigLexicon;
 use OC\Core\ResponseDefinitions;
 use OC\Search\SearchComposer;
 use OC\Search\SearchQuery;
@@ -19,6 +21,7 @@ use OCP\AppFramework\Http\Attribute\NoAdminRequired;
 use OCP\AppFramework\Http\Attribute\NoCSRFRequired;
 use OCP\AppFramework\Http\DataResponse;
 use OCP\AppFramework\OCSController;
+use OCP\IAppConfig;
 use OCP\IL10N;
 use OCP\IRequest;
 use OCP\IURLGenerator;
@@ -39,6 +42,7 @@ class UnifiedSearchController extends OCSController {
 		private IRouter $router,
 		private IURLGenerator $urlGenerator,
 		private IL10N $l10n,
+		private IAppConfig $appConfig,
 	) {
 		parent::__construct('core', $request);
 	}
@@ -72,7 +76,7 @@ class UnifiedSearchController extends OCSController {
 	 * @param string $providerId ID of the provider
 	 * @param string $term Term to search
 	 * @param int|null $sortOrder Order of entries
-	 * @param int|null $limit Maximum amount of entries, limited to 25
+	 * @param int|null $limit Maximum amount of entries (capped by configurable unified-search.max-results-per-request, default: 25)
 	 * @param int|string|null $cursor Offset for searching
 	 * @param string $from The current user URL
 	 *
@@ -96,7 +100,8 @@ class UnifiedSearchController extends OCSController {
 		[$route, $routeParameters] = $this->getRouteInformation($from);
 
 		$limit ??= SearchQuery::LIMIT_DEFAULT;
-		$limit = max(1, min($limit, 25));
+		$maxLimit = $this->appConfig->getValueInt(Application::APP_ID, ConfigLexicon::UNIFIED_SEARCH_MAX_RESULTS_PER_REQUEST);
+		$limit = max(1, min($limit, $maxLimit));
 
 		try {
 			$filters = $this->composer->buildFilterList($providerId, $this->request->getParams());

core/openapi-full.json

@@ -8511,7 +8511,7 @@
                     {
                         "name": "limit",
                         "in": "query",
-                        "description": "Maximum amount of entries, limited to 25",
+                        "description": "Maximum amount of entries (capped by configurable unified-search.max-results-per-request, default: 25)",
                         "schema": {
                             "type": "integer",
                             "format": "int64",

core/openapi.json

@@ -8511,7 +8511,7 @@
                     {
                         "name": "limit",
                         "in": "query",
-                        "description": "Maximum amount of entries, limited to 25",
+                        "description": "Maximum amount of entries (capped by configurable unified-search.max-results-per-request, default: 25)",
                         "schema": {
                             "type": "integer",
                             "format": "int64",

openapi.json

@@ -12024,7 +12024,7 @@
                     {
                         "name": "limit",
                         "in": "query",
-                        "description": "Maximum amount of entries, limited to 25",
+                        "description": "Maximum amount of entries (capped by configurable unified-search.max-results-per-request, default: 25)",
                         "schema": {
                             "type": "integer",
                             "format": "int64",