BuddyPress.org

I have created my custom component for custom notifications, but id doesn’t work. This is the code:

<?php
/**
 * Class to serve notification Calls.
 *

 */

	class MyPlugin___Notifications extends BP_Component {

	    protected $component_name = 'MyPlugin__';

		/**
		 * Constructor.
		 *
		 * @since    1.0.0
		 * @access   public
		 * @author   Wbcom Designs
		 */
		public function __construct() {
			$this->slug = $this->component_name;

			parent::start(
			    $this->component_name, esc_html__( 'Custom', 'bp-MyPlugin-Custom' ), dirname( __FILE__ )
			);

			buddypress()->active_components[ $this->component_name ] = '1';
			
		}
		

		public function setup_globals( $args = array() ) {
			parent::setup_globals(
				array(
					'slug'                  => $this->component_name,
					'has_directory'         => false,
					'notification_callback' => 'MyPlugin_custom_format_buddypress_notifications',
				)
			);
		}

		public function setup_actions() {
			parent::setup_actions();
		}
		
		public function add_MyPlugin_notification_format($action, $item_id, $secondary_item_id, 
		                                                      $user_id, $format = 'string' ){
		    global $wpdb;
		    if ( bp_is_active( 'notifications' ) ) {
		        if ( 'custom_action' === $action ) {
		           //there is a php code
		            return $return;
		        }
		    }
		}

		public function component_name() {
			return $this->component_name;
		}
	}

function init_MyPlugin___notifications_component(){
    buddypress()->MyPlugin___notifications =  new MyPlugin___Notifications();
    buddypress()->MyPlugin___notifications->notification_callback = 'MyPlugin_custom_format_buddypress_notifications';
   
}
add_action( 'bp_init', 'init_MyPlugin___notifications_component', 40 );

add_filter( 'bp_notifications_get_notifications_for_user', 'MyPlugin_custom_format_buddypress_notifications', 10, 5 );

function MyPlugin_custom_format_buddypress_notifications( $action, $item_id, $secondary_item_id, $total_items, $format = 'string' ) {
    $return = buddypress()->MyPlugin___notifications->add_MyPlugin_notification_format( $action, $item_id, 
        $secondary_item_id, $total_items, $format);
}