AnsPress_BP_Hooks::ap_notifier_format( string $action, integer $activity_id, integer $secondary_item_id, integer $total_items, string $format = 'string' )

	public static function ap_notifier_format( $action, $activity_id, $secondary_item_id, $total_items, $format = 'string' ) {
		$amount = 'single';
		$notification_link = '';
		$text = '';

		if ( strrpos( $action, 'new_answer' ) !== false ) {
		 	$answer = get_post( $activity_id );

			if ( $answer ) {
				$notification_link = get_permalink( $answer->ID );
				$title = substr( strip_tags( $answer->post_title ), 0, 35 ) . (strlen( $answer->post_title ) > 35 ? '...' : '') ;

				if ( (int) $total_items > 1 ) {
					$text = sprintf( __( '%1$d answers on - %2$s', 'anspress-question-answer' ), (int) $total_items, $title );
					$amount = 'multiple';
				} else {
					$user_fullname = bp_core_get_user_displayname( $secondary_item_id );
					$text = sprintf( __( '%1$s answered on - %2$s', 'anspress-question-answer' ), $user_fullname, $title );
				}
			}
		} elseif ( strrpos( $action, 'new_comment' ) !== false ) {
			$comment = get_comment( $activity_id );
			$post = get_post( $comment->comment_post_ID ); // WPCS: override okay.
			$notification_link  = get_permalink( $comment->comment_post_ID );
			$type = 'question' === $post->post_type ? __( 'question', 'anspress-question-answer' ) : __( 'answer', 'anspress-question-answer' );
			$amount = 'single';
			$title = substr( strip_tags( $post->post_title ), 0, 35 ) . ( strlen( $post->post_title ) > 35 ? '...' : '') ;

			if ( (int) $total_items > 1 ) {
				$text = sprintf( __( '%1$d comments on your %3$s - %2$s', 'anspress-question-answer' ), (int) $total_items, $title, $type );
				$amount = 'multiple';
			} else {
				$user_fullname = bp_core_get_user_displayname( $secondary_item_id );
				$text = sprintf( __( '%1$s commented on your %3$s - %2$s', 'anspress-question-answer' ), $user_fullname, $title, $type );
			}
		}

		if ( 'string' === $format ) {
			$return = apply_filters( 'ap_notifier_' . $amount . '_at_mentions_notification', '<a href="' . esc_url( $notification_link ) . '">' . esc_html( $text ) . '</a>', $notification_link, (int) $total_items, $activity_id, $secondary_item_id );
		} else {
			$return = apply_filters( 'ap_notifier_' . $amount . '_at_mentions_notification', array(
				'text' => $text,
				'link' => $notification_link,
			), $notification_link, (int) $total_items, $activity_id, $secondary_item_id );
		}

		do_action( 'ap_notifier_format_notifications', $action, $activity_id, $secondary_item_id, $total_items );

		return $return;
	}