Use multisearch end point for search operations (#15)

Author: ryanmitchell

config/statamic-typesense.php

@@ -2,8 +2,8 @@
 
 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,
 
 ];

src/Typesense/Index.php

@@ -111,7 +111,20 @@ public function searchUsingApi($query, array $options = []): array
                 ->join(',') ?: '*';
         }
 
-        $searchResults = $this->getOrCreateIndex()->documents->search($options);
+        $this->getOrCreateIndex();
+
+        // Using POST multiSearch to avoid potential request size limitations
+        // (regular search uses GET and is limited in size by Typesense)
+        $searchRequest = [
+            'searches' => [
+                array_merge($options, [
+                    'collection' => $this->name,
+                ]),
+            ],
+        ];
+
+        $searchResults = $this->client->multiSearch->perform($searchRequest, []);
+        $searchResults = array_shift($searchResults['results']);
 
         $total = count($searchResults['hits']);