Forminator - redirect depending on fields string lenghts

<?php

if ( ! defined( 'ABSPATH' ) ) { exit; } elseif ( defined( 'WP_CLI' ) && WP_CLI ) { return; }

add_action( 'plugins_loaded', 'wpmudev_forminator_add_custom_number_to_redirect_url_func', 100 );

function wpmudev_forminator_add_custom_number_to_redirect_url_func() {
    if ( class_exists( 'Forminator' ) ) {
        class WPMUDEV_Forminator_Add_Entry_ID_To_Redirect_URL{

            //enter form_id here
            private $form_id = 1398;

            // fields to be calculated
            private $fields_to_add = array(
                'text-1',
                'text-2',
            );

                        //enter your redirect urls here
            // later in code they are refered as $redirect_urls[X]
            // where X is number from 0 up
            private $redirect_urls = array(
                'http://somesite.com/redirect1/',
                'http://somesite.com/redirect2/',
                'http://somesite.com/redirect3/',
            );

            // don't change these
            private $total_length = '';
            private $do_redirect = '';

            public function __construct(){
                add_action( 'forminator_custom_form_submit_before_set_fields', array( $this, 'calculate_length' ), 10, 3 );
                add_filter( 'forminator_replace_form_data', array( $this, 'add_length_to_redirect_url'), 20, 1 );
            }


            public function calculate_length( $entry, $form_id, $form_data_array ){

                if( $this->form_id == $form_id ){

                    foreach ( $form_data_array as $form_data_element ) {

                        if ( in_array( $form_data_element['name'], $this->fields_to_add ) ) {

                            $this->total_length = $this->total_length + strlen( $form_data_element['value'] );

                        }
                    }

                }

            }

            public function add_length_to_redirect_url( $content ){

                if ( $this->total_length !== '' ) {
                    // below you set conditions
                    // which URL (see private $do_redirect earlier in code) to redirect to
                    if ( $this->total_length < 5 ) {
                        $this->do_redirect = $this->redirect_urls[0];
                    } elseif ( $this->total_length < 8 ) {
                        $this->do_redirect = $this->redirect_urls[1];
                    } else {
                        $this->do_redirect = $this->redirect_urls[2];
                    }

                    $content = add_query_arg('total_length', $this->total_length, $this->do_redirect);

                }

                return $content;
            }

        }

        $run = new WPMUDEV_Forminator_Add_Entry_ID_To_Redirect_URL;
    }
}