Customizing Embed URL in hidden field using Javascript

forminator_hidden_embed_url_last_path.php

<?php
/**
 * Plugin Name: [Forminator Pro] - Hidden Field -> Embed URL replace with last URL path.
 * Plugin URI: https://wpmudev.com/
 * Description: Hidden Field -> Embed URL replace with last URL path.
 * Author: Alfredo Galano Loyola @ WPMUDEV
 * Author URI: https://wpmudev.com/
 * License: GPLv2 or later
 */
if (!defined('ABSPATH')) {
    exit;
}
// No need to do anything if the request is via WP-CLI.
if (defined('WP_CLI') && WP_CLI) {
    return;
}

if (!class_exists('WPMUDEV_Forminator_Hidden_Field_URL_Last_Path')) {

    class WPMUDEV_Forminator_Hidden_Field_URL_Last_Path
    {
        /**
         * $forms used to define the form and the hidden field that will be used. It's possible use the feature in several forms
         * [forminator_form id="1049353"]
         */
        private $forms = array(
            1049353 => 'hidden-1',
        );

        private $form_id;
        
        private static $_instance = null;

        public static function get_instance()
        {

            if (is_null(self::$_instance)) {
                self::$_instance = new WPMUDEV_Forminator_Hidden_Field_URL_Last_Path();
            }

            return self::$_instance;
        }

        private function __construct()
        {
            $this->init();
        }

        public function init()
        {
            // Do some checks here
            if (!defined('FORMINATOR_VERSION') || FORMINATOR_VERSION < '1.12' || !class_exists('Forminator_API')) {
                return;
            }


            add_action('wp_footer', array($this, 'customize_hidden_field_js'), 9999);
            add_filter('forminator_render_form_markup', array($this, 'prepare_form_markup'), 1, 6);

        }

        public function customize_hidden_field_js()
        {
           if ( isset($this->forms[$this->form_id])){
            ?>
            <script>
            jQuery(document ).ready(function() {

                form_id = "<?php echo $this->form_id;?>";
                hidden_field =  "<?php echo $this->forms[$this->form_id];?>";
                let url = jQuery( `#forminator-module-${form_id} [name="${hidden_field}"]` ).val();

                jQuery( `#forminator-module-${form_id} [name="${hidden_field}"]` ).val(get_last_past(url)).trigger('change');
                
                function get_last_past(url){
                    let  url_parts = url.split("/");
                
                    if(url_parts[url_parts.length-1] !== ""){
                      return url_parts[url_parts.length-1]
                    }
                    return url_parts[url_parts.length-2];
                
                }


            
            });
            </script>
            <?php



           }
        }
        
        
        public function prepare_form_markup($html, $form_fields, $form_type, $form_settings, $form_design, $render_id)
        {

            if ('custom-form' != $form_type){
                return $html;
            }
            $this->form_id = $form_settings['form_id'];
            return $html;
        }

    }

    add_action('plugins_loaded', function () {
        return WPMUDEV_Forminator_Hidden_Field_URL_Last_Path::get_instance();
    });
}