add true random search when no parameters (excepted pager )are given …

…on search - Games-of-Switzerland/swissgamesgarden#127

CHANGELOG.md

@@ -11,6 +11,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 - remove caches on both Search & Autocomplete endpoints (Elasticsearch)
 
+### Added
+- add true random search when no parameters (excepted pager )are given on search - Games-of-Switzerland/swissgamesgarden#127
+
 ## [0.6.0] - 2024-02-09
 ### Changed
 - move Linters php-deprecation-detector, php-cs-fixer & psalm into own Tools/ComposerJson

web/modules/custom/gos_elasticsearch/src/Plugin/rest/resource/ElasticGamesResource.php

@@ -262,6 +262,18 @@ public function get(Request $request): CacheableJsonResponse {
       $es_query['body']['aggregations']['aggs_all']['aggs']['all_filtered_release_years_histogram']['filter']['bool']['should'][] = $this->addStatesFilter($states);
     }
 
+    // When no parameters (excepted pager) have been submitted, then the order must be random.
+    if ($resource_validator->getRaw() === ['page' => '0']) {
+      $es_query['body']['query'] = [
+        'function_score' => [
+          'query' => [
+            'match_all' => (object) [],
+          ],
+          'random_score' => (object) [],
+        ],
+      ];
+    }
+
     try {
       $results = $index->search($es_query);
       $this->response->setData($results);