BuddyPress Add Custom Notification

<?php
// this is to add a fake component to BuddyPress. A registered component is needed to add notifications
function custom_filter_notifications_get_registered_components( $component_names = array() ) {

	// Force $component_names to be an array 	if ( ! is_array( $component_names ) ) { 		$component_names = array(); 	}

	// Add 'custom' component to registered components array 	array_push( $component_names, 'custom' );

	// Return component's with 'custom' appended 	return $component_names; } add_filter( 'bp_notifications_get_registered_components', 'custom_filter_notifications_get_registered_components' );

// this gets the saved item id, compiles some data and then displays the notification function custom_format_buddypress_notifications( $content, $item_id, $secondary_item_id, $total_items, $format = 'string', $action, $component ) { 	// New custom notifications 	if ( 'custom_action' === $action ) { 	 		$comment = get_comment( $item_id ); 	 		$custom_title = $comment->comment_author . ' commented on the post ' . get_the_title( $comment->comment_post_ID ); 		$custom_link  = get_comment_link( $comment ); 		$custom_text = $comment->comment_author . ' commented on your post ' . get_the_title( $comment->comment_post_ID ); 		// WordPress Toolbar 		if ( 'string' === $format ) { 			$return = apply_filters( 'custom_filter', '<a href="' . esc_url( $custom_link ) . '" title="' . esc_attr( $custom_title ) . '">' . esc_html( $custom_text ) . '</a>', $custom_text, $custom_link ); 		// Deprecated BuddyBar 		} else { 			$return = apply_filters( 'custom_filter', array( 				'text' => $custom_text, 				'link' => $custom_link 			), $custom_link, (int) $total_items, $custom_text, $custom_title ); 		} 		 		return $return; 		 	} 	 } add_filter( 'bp_notifications_get_notifications_for_user', 'custom_format_buddypress_notifications', 10, 7 );

// this hooks to comment creation and saves the comment id function bp_custom_add_notification( $comment_id, $comment_object ) {

	$post = get_post( $comment_object->comment_post_ID ); 	$author_id = $post->post_author;

	bp_notifications_add_notification( array( 		'user_id'           => $author_id, 		'item_id'           => $comment_id, 		'component_name'    => 'custom', 		'component_action'  => 'custom_action', 		'date_notified'     => bp_core_current_time(), 		'is_new'            => 1, 	) ); 	 } add_action( 'wp_insert_comment', 'bp_custom_add_notification', 99, 2 );