Add shortcode for getting number of user groups

+ convert default visibility to integer

plugins/bcc-login/includes/class-bcc-login-visibility.php

@@ -56,6 +56,7 @@ function __construct( BCC_Login_Settings $settings, BCC_Login_Client $client, BC
         add_shortcode('target_groups_filter_widget', array($this, 'target_groups_filter_widget'));
         add_shortcode('tags_for_queried_target_groups', array($this, 'tags_for_queried_target_groups'));
         add_shortcode('get_bcc_group_name', array($this, 'get_bcc_group_name_by_id'));
+        add_shortcode('get_number_of_user_groups', array($this, 'get_number_of_user_groups'));
     }
 
     /**
@@ -132,7 +133,7 @@ function on_template_redirect() {
 
         $post = get_post();
         $level      = $this->_client->get_current_user_level();
-        $visibility = $this->_settings->default_visibility;
+        $visibility = (int)$this->_settings->default_visibility;
 
         // Post may not be defined when the user is visiting the homepage
         if ( !$post ) {
@@ -152,7 +153,6 @@ function on_template_redirect() {
             $visibility = $post_visibility;
         }
 
-
         if ( $visibility && $visibility > $level ) {
             if ( is_user_logged_in() ) {
                 return $this->not_allowed_to_view_page();
@@ -498,6 +498,10 @@ private function get_user_bcc_filtering_groups_list() {
         return $user_site_groups;
     }
 
+    public function get_number_of_user_groups() {
+        return count($this->get_user_bcc_filtering_groups_list());
+    }
+
     /**
      * Checks the `bccLoginVisibility` attribute and hides the block if
      * the current users shouldn't be allowed to see it.