restrict list of searx instances

app/Console/Commands/SearxInstances.php

@@ -45,15 +45,29 @@ class SearxInstances extends Command
         curl_close($ch);
         $response = json_decode($response);
         if($response !== null){
-            $f = fopen('storage/instances.txt', 'w');
+            $instances = [];
             foreach($response->instances as $instance => $data) {
-                if(!isset($data->{'error'}) && $data->{'network_type'} !== 'tor') {
-                    fwrite($f, $instance . "\n");
+                if(!isset($data->{'error'}) &&
+                $data->{'network_type'} !== 'tor' &&
+                isset($data->{'timing'}->{'search_go'}) &&
+                isset($data->{'timing'}->{'search_go'}->{'all'}) &&
+                isset($data->{'timing'}->{'search_go'}->{'all'}->{'median'}) &&
+                $data->{'timing'}->{'search_go'}->{'all'}->{'median'} <= 1.8) {
+                    try{
+                        $opensearch = file_get_contents($instance . 'opensearch.xml');
+                        if(!str_contains($opensearch, 'SyndicationRight')) {
+                            $instances[] = $instance;
+                        }
+                    }catch(\Exception $e) {
+                        
+                    }
                 }
             }
+            $f = fopen('storage/instances.txt', 'w');
+            fwrite($f, implode("\n", $instances));
             fclose($f);
         } else {
             echo "Unable to locate file. Check https://searx.space/data/instances.json for more info\n";
         }
     }
-}
+}
\ No newline at end of file