Made UserCollectionInderface to extend Countable to get the count of existing users

CHANGELOG.md

@@ -4,7 +4,8 @@
 1. [](#new)
     * Added `Route::withoutParams()` methods
     * Added `Pages::setCheckMethod()` method to override page configuration in Admin Plugin
-    * Added `Cache::clearCache('invalidate')` parameter for just invalidating the cache without deleting any cached files
+    * Added `Cache::clearCache('invalidate')` parameter for just invalidating the cache without deleting any cached files 
+    * Made `UserCollectionInderface` to extend `Countable` to get the count of existing users
 1. [](#improved)
     * Flex admin: added default search options for flex objects
 1. [](#bugfix)

system/src/Grav/Common/User/DataUser/UserCollection.php

@@ -118,4 +118,13 @@ class UserCollection implements UserCollectionInterface
 
         return $file_path && unlink($file_path);
     }
+
+    public function count(): int
+    {
+        // check for existence of a user account
+        $account_dir = $file_path = Grav::instance()['locator']->findResource('account://');
+        $accounts = glob($account_dir . '/*.yaml') ?: [];
+
+        return count($accounts);
+    }
 }

system/src/Grav/Common/User/Interfaces/UserCollectionInterface.php

@@ -9,7 +9,7 @@
 
 namespace Grav\Common\User\Interfaces;
 
-interface UserCollectionInterface
+interface UserCollectionInterface extends \Countable
 {
     /**
      * Load user account.