Allow using multisearch

Author: simonerd

config/statamic-typesense.php

@@ -2,8 +2,14 @@
 
 return [
 
-    // if you make this higher it will use more memory
-    // but be quicker to update large numbers of documents
+    // If you make this higher it will use more memory
+    // but be quicker to update large numbers of documents.
     'insert_chunk_size' => 100,
 
+    // Use multiSearch via POST for search requests.
+    // Typesense limits GET request parameter size for security
+    // reasons, so if you have many or long search parameters,
+    // you should enable this.
+    'use_multi_search' => env('STATAMIC_TYPESENSE_MULTISEARCH', false)
+
 ];

src/Typesense/Index.php

@@ -111,7 +111,9 @@ public function searchUsingApi($query, array $options = []): array
                 ->join(',') ?: '*';
         }
 
-        $searchResults = $this->getOrCreateIndex()->documents->search($options);
+        $searchResults = config('statamic-typesense.use_multi_search', false)
+            ? $this->multiSearch($options)
+            : $this->regularSearch($options);
 
         $total = count($searchResults['hits']);
 
@@ -182,4 +184,26 @@ public function client()
     {
         return $this->client;
     }
+
+    private function regularSearch(array $options)
+    {
+        return $this->getOrCreateIndex()->documents->search($options);
+    }
+
+    private function multiSearch(array $options)
+    {
+        $this->getOrCreateIndex();
+
+        $searchRequest = [
+            'searches' => [
+                array_merge($options, [
+                    'collection' => $this->name
+                ])
+            ],
+        ];
+
+        $multiSearchResults = $this->client->multiSearch->perform($searchRequest, []);
+
+        return array_shift($multiSearchResults['results']);
+    }
 }