bp_blogs_publish_post_activity_meta( int $activity_id, WP_Post $post, array $args )

function bp_blogs_publish_post_activity_meta( $activity_id, $post, $args ) {
	if ( empty( $activity_id ) || !in_array( $post->post_type, bp_core_get_active_custom_post_type_feed() )  ) {
		return;
	}

	bp_activity_update_meta( $activity_id, 'post_title', $post->post_title );

	if ( ! empty( $args['post_url'] ) ) {
		$post_permalink = $args['post_url'];
	} else {
		$post_permalink = $post->guid;
	}

	bp_activity_update_meta( $activity_id, 'post_url',   $post_permalink );

	$args = array(
		'name' => $post->post_type
	);

	$output = 'objects'; // names or objects

	$cu_post_types = get_post_types( $args, $output );

	foreach ( $cu_post_types as $cu ) {
		$singular_label_name = strtolower( $cu->labels->singular_name );
	}

	$admin_filters = 'New '.$singular_label_name.' published';
	bp_activity_update_meta( $activity_id, 'admin_filters',  $admin_filters );

	// Update the blog's last activity.
	bp_blogs_update_blogmeta( $args['item_id'], 'last_activity', bp_core_current_time() );

	/**
	 * Fires after BuddyPress has recorded metadata about a published blog post.
	 *
	 * @since BuddyPress 1.0.0
	 *
	 * @param int     $ID    ID of the blog post being recorded.
	 * @param WP_Post $post  WP_Post object for the current blog post.
	 * @param string  $value ID of the user associated with the current blog post.
	 */
	do_action( 'bp_blogs_new_blog_post', $post->ID, $post, $args['user_id'] );
}