JezK

Edit File: advaxe-incomplete-order.php

<?php
/**
 * Plugin Name: Incomplete Order Status (No Duplicate Fix)
 * Plugin URI: https://advaxe.com
 * Description: Captures abandoned checkout data accurately using Browser Fingerprinting to prevent duplicates.
 * Version: 3.0.0
 * Author: advaxe
 * Author URI: https://advaxe.com
 * Text Domain: advaxe-incomplete
 */

if ( ! defined( 'ABSPATH' ) ) {
    exit; // Exit if accessed directly
}

/**
 * 1. Register Order Status
 */
add_action( 'init', 'advaxe_register_status' );
function advaxe_register_status() {
    register_post_status( 'wc-incomplete-order', array(
        'label'                     => 'Incomplete Order',
        'public'                    => true,
        'exclude_from_search'       => false,
        'show_in_admin_all_list'    => true,
        'show_in_admin_status_list' => true,
        'label_count'               => _n_noop( 'Incomplete Order (%s)', 'Incomplete Orders (%s)' )
    ) );
}

add_filter( 'wc_order_statuses', 'advaxe_add_status_list' );
function advaxe_add_status_list( $order_statuses ) {
    $new = array();
    foreach ( $order_statuses as $key => $status ) {
        $new[ $key ] = $status;
        if ( 'wc-pending' === $key ) {
            $new['wc-incomplete-order'] = 'Incomplete Order';
        }
    }
    return $new;
}

/**
 * 2. Javascript Logic (Generates Unique ID per Session)
 */
add_action( 'wp_enqueue_scripts', 'advaxe_checkout_tracker_script' );
function advaxe_checkout_tracker_script() {
    if ( ! is_checkout() || is_order_received_page() ) {
        return;
    }

wp_enqueue_script( 'jquery' );

$script = "
    jQuery(document).ready(function($) {
        
        // 1. Generate or Retrieve Unique Browser Key for this checkout session
        let sessionKey = sessionStorage.getItem('advaxe_checkout_session_key');
        if (!sessionKey) {
            sessionKey = 'sess_' + Date.now() + '_' + Math.floor(Math.random() * 10000);
            sessionStorage.setItem('advaxe_checkout_session_key', sessionKey);
        }

let isPlaceOrderClicked = false;
        let isRequestSentRecently = false; // Debounce flag

// 2. Detect Place Order Clicks
        $('form.checkout').on('submit', function() { isPlaceOrderClicked = true; });
        $('#place_order').on('click', function() { isPlaceOrderClicked = true; });

// 3. Main Capture Function
        function captureIncomplete() {
            if (isPlaceOrderClicked) return; // User is buying properly

// Basic Debounce: Prevent double firing (visibility + unload same time)
            if (isRequestSentRecently) return;
            isRequestSentRecently = true;
            setTimeout(() => { isRequestSentRecently = false; }, 1000);

var email = $('#billing_email').val();
            var phone = $('#billing_phone').val();

if (!email && !phone) return;

var formData = new FormData();
            formData.append('action', 'advaxe_capture_incomplete_order');
            formData.append('security', '" . wp_create_nonce('advaxe_incomplete_nonce') . "');
            formData.append('form_data', $('form.checkout').serialize());
            formData.append('browser_session_key', sessionKey); // <--- THE KEY

// Send reliable beacon
            navigator.sendBeacon('" . admin_url( 'admin-ajax.php' ) . "', formData);
        }

// 4. Triggers
        document.addEventListener('visibilitychange', function() {
            if (document.visibilityState === 'hidden') {
                captureIncomplete();
            }
        });
        
        window.addEventListener('beforeunload', function() {
             captureIncomplete();
        });
    });
    ";

wp_add_inline_script( 'jquery-core', $script );
}

/**
 * 3. Server Side Processing (Checks for Duplicate Key)
 */
add_action( 'wp_ajax_advaxe_capture_incomplete_order', 'advaxe_process_ajax' );
add_action( 'wp_ajax_nopriv_advaxe_capture_incomplete_order', 'advaxe_process_ajax' );

function advaxe_process_ajax() {
    check_ajax_referer( 'advaxe_incomplete_nonce', 'security' );

$session_key = isset($_POST['browser_session_key']) ? sanitize_text_field($_POST['browser_session_key']) : '';
    
    if ( empty($session_key) ) wp_die(); // No key, no process

// Parse Form Data
    $params = array();
    parse_str( $_POST['form_data'], $params );
    
    $email = isset($params['billing_email']) ? sanitize_email($params['billing_email']) : '';
    $phone = isset($params['billing_phone']) ? sanitize_text_field($params['billing_phone']) : '';

if ( empty($email) && empty($phone) ) wp_die();

// --- CRITICAL: Find existing order with this Session Key ---
    // We query the database to see if we already made an incomplete order for this browser session
    $existing_orders = wc_get_orders(array(
        'limit' => 1,
        'status' => 'wc-incomplete-order',
        'meta_key' => '_advaxe_session_key',
        'meta_value' => $session_key,
        'return' => 'ids'
    ));

$order = false;
    
    if ( !empty($existing_orders) ) {
        $order_id = $existing_orders[0];
        $order = wc_get_order($order_id);
    }

if ( !$order ) {
        // Create NEW
        $order = wc_create_order();
        $order->set_status( 'wc-incomplete-order' );
        // Save the Key so we find it next time
        $order->update_meta_data( '_advaxe_session_key', $session_key );
    }

// --- Standard Data Saving ---
    $address_billing = array(
        'first_name' => isset($params['billing_first_name']) ? sanitize_text_field($params['billing_first_name']) : '',
        'last_name'  => isset($params['billing_last_name']) ? sanitize_text_field($params['billing_last_name']) : '',
        'email'      => $email,
        'phone'      => $phone,
        'address_1'  => isset($params['billing_address_1']) ? sanitize_text_field($params['billing_address_1']) : '',
        'city'       => isset($params['billing_city']) ? sanitize_text_field($params['billing_city']) : '',
    );
    $order->set_address( $address_billing, 'billing' );
    
    // Handle Shipping Address
    if ( isset($params['ship_to_different_address']) && $params['ship_to_different_address'] ) {
         $address_shipping = array(
            'first_name' => isset($params['shipping_first_name']) ? sanitize_text_field($params['shipping_first_name']) : '',
            'last_name'  => isset($params['shipping_last_name']) ? sanitize_text_field($params['shipping_last_name']) : '',
            'address_1'  => isset($params['shipping_address_1']) ? sanitize_text_field($params['shipping_address_1']) : '',
            'city'       => isset($params['shipping_city']) ? sanitize_text_field($params['shipping_city']) : '',
        );
        $order->set_address( $address_shipping, 'shipping' );
    } else {
        $order->set_address( $address_billing, 'shipping' );
    }

// Cart Items
    $order->remove_order_items();
    if ( WC()->cart ) {
        foreach ( WC()->cart->get_cart() as $cart_item_key => $values ) {
            $item = new WC_Order_Item_Product();
            $item->set_product( $values['data'] );
            $item->set_quantity( $values['quantity'] );
            $item->set_variation_id( $values['variation_id'] );
            $item->set_subtotal( $values['line_subtotal'] );
            $item->set_total( $values['line_subtotal_tax'] );
            $order->add_item( $item );
        }
    }

$order->calculate_totals();
    $order->save();

wp_die();
}

/**
 * 4. Clean up on Success
 * If user completes order, clear the browser storage so next time they are fresh.
 */
add_action( 'woocommerce_thankyou', 'advaxe_clear_browser_storage' );
function advaxe_clear_browser_storage() {
    ?>
    <script type="text/javascript">
        if(sessionStorage) {
            sessionStorage.removeItem('advaxe_checkout_session_key');
        }
    </script>
    <?php
}