allow querying users by id

src/Controllers/UserController.php

@@ -28,6 +28,8 @@ class UserController extends BaseController {
                 $steamId = Parser::convertSteamIdToCommunityId($steamId);
             } catch (InvalidArgumentException $e) {
             }
+        } else if ($user = $this->userProvider->getById((int)$steamId)) {
+            Flight::json($user);
         }
         Flight::json($this->userProvider->get($steamId));
     }

src/Providers/UserProvider.php

@@ -71,6 +71,9 @@ class UserProvider extends BaseProvider {
     }
 
     public function getById(int $userId): ?User {
+        if ($userId > pow(2, 31)) {
+            return null;
+        }
         // first search in the view which contains the most used name for the users
 
         $query = $this->getQueryBuilder();