Create the custom variable "order.billing_email" for use in automate woo

automatewoo order.billing_email

/*
// original snippet URL: https://gist.github.com/solaceten/7f03aed8c3b232742b1f6fb7777d8776
// Author solaceten.  You are free to do what you want with this but not sell it or make any money from its use.
//
// Explainer:
// Below is a custom function to add a custom variable into automate woo.
// This example enables the use of a new variable:  order.billing_email - as a variable in the workflow ACTION section, email TO field.
// As at Dec 2024, in automatewoo, this variable is  working after adding the following code.
//
// While this code allows you to use the new variable {{ order.billing_email }} in your Workflow, note that in the main queue admin table, 
// it still displays the customer.email - however, it will send the email to the billing email instead.  If you find a way to mofidy this display behaviour, 
// feel free to add a comment in the GIST snippet 
//
// do not add the above php tag if it's already in your functions file
// copy and paste the snippet below to your child theme's functions file or to a dedicated plugin.
*/

functions.php

<?php 


add_filter( 'automatewoo/variables', 'register_order_billing_email_variable' );
    /**
     * Original snippet URL: https://gist.github.com/solaceten/7f03aed8c3b232742b1f6fb7777d8776
     * Function to allow us to use the billing email in the AutomateWoo Workflow for follow up emails.
     * Change path below to where the file in your theme will live
     * In this example, i'm using a child theme (which you should be doing too!):  
     */
    
 function register_order_billing_email_variable( $variables ) {
    // Include the custom class file
    $variables['order']['billing_email'] = get_stylesheet_directory().'/automatewoo-extension/variable-order-billing-email.php';

    // uncomment below to use for debugging (WP_DEBUG mode must be on)
     //error_log( 'New Custom Variable Registered: order.billing_email' );

    return $variables;
}

variable-order-billing-email.php

<?php

/** 
* Original snippet URL: https://gist.github.com/solaceten/7f03aed8c3b232742b1f6fb7777d8776
* copy and paste this code to a new file called "variable-order-billing-email.php" under a new folder called "automatewoo-extension"
* in your child theme so it looks like this:
* themes
* - your-child-theme
* -- automatewoo-extension
* --- variable-order-billing-email.php
*/

if ( ! defined( 'ABSPATH' ) ) exit;
/**
 * Class AW_Variable_Order_Billing_Email
 */
class My_AutomateWoo_Billing_Email extends AutomateWoo\Variable{
    /**
     * Load admin details for the variable.
     */
    public function load_admin_details() {
        $this->description = __( "Displays the billing email address for the order.", 'automatewoo' );
    }

    /** @var bool - whether to allow setting a fallback value for this variable  */
	public $use_fallback = false;
    
      public function get_value( $order, $parameters = [] ) {
        if ( $order && is_a( $order, 'WC_Order' ) ) {
            return $order->get_billing_email();
        }

        return 'No email available';
    }

}
return new My_AutomateWoo_Billing_Email();