From ae49e29040e9194567179a0db3018ea20f43e05a Mon Sep 17 00:00:00 2001
From: Alexandre Faustino <alexmigf@gmail.com>
Date: Tue, 21 Jan 2025 08:39:33 +0000
Subject: [PATCH] Fix: Error calling undefined method
 `WC_Order_Refund::get_customer_id()` (#1019)

---
 readme.txt                                |  2 +-
 woocommerce-pdf-invoices-packingslips.php |  4 ++--
 wpo-ips-functions.php                     | 13 +++++++++++++
 3 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/readme.txt b/readme.txt
index dd4b3d5b4..4d8397c8b 100644
--- a/readme.txt
+++ b/readme.txt
@@ -5,7 +5,7 @@ Tags: woocommerce, pdf, ubl, invoices, packing slips
 Requires at least: 4.4
 Tested up to: 6.7
 Requires PHP: 7.4
-Stable tag: 3.9.5
+Stable tag: 3.9.6-beta-1
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
 
diff --git a/woocommerce-pdf-invoices-packingslips.php b/woocommerce-pdf-invoices-packingslips.php
index dcc641dc0..433e8a33b 100644
--- a/woocommerce-pdf-invoices-packingslips.php
+++ b/woocommerce-pdf-invoices-packingslips.php
@@ -4,7 +4,7 @@
  * Requires Plugins:     woocommerce
  * Plugin URI:           https://wpovernight.com/downloads/woocommerce-pdf-invoices-packing-slips-bundle/
  * Description:          Create, print & email PDF or UBL Invoices & PDF Packing Slips for WooCommerce orders.
- * Version:              3.9.5
+ * Version:              3.9.6-beta-1
  * Author:               WP Overnight
  * Author URI:           https://www.wpovernight.com
  * License:              GPLv2 or later
@@ -22,7 +22,7 @@
 
 class WPO_WCPDF {
 
-	public $version              = '3.9.5';
+	public $version              = '3.9.6-beta-1';
 	public $version_php          = '7.4';
 	public $version_woo          = '3.3';
 	public $version_wp           = '4.4';
diff --git a/wpo-ips-functions.php b/wpo-ips-functions.php
index e1e637f91..2be30fce5 100644
--- a/wpo-ips-functions.php
+++ b/wpo-ips-functions.php
@@ -262,6 +262,11 @@ function wcpdf_get_document_file( object $document, string $output_format = 'pdf
 		$error_message = "Invalid output format: {$output_format}. Expected one of: " . implode( ', ', $document->output_formats );
 		return wcpdf_error_handling( $error_message, $error_handling, true, 'critical' );
 	}
+	
+	if ( ! $document->is_enabled( $output_format ) ) {
+		$error_message = "The {$output_format} output format is not enabled for this document: {$document->get_title()}.";
+		return wcpdf_error_handling( $error_message, $error_handling, true, 'critical' );
+	}
 
 	$tmp_path = WPO_WCPDF()->main->get_tmp_path( 'attachments' );
 
@@ -1035,6 +1040,14 @@ function wpo_wcpdf_dynamic_translate( string $string, string $textdomain ): stri
  * @return bool
  */
 function wpo_wcpdf_order_is_vat_exempt( \WC_Abstract_Order $order ): bool {
+	if ( 'shop_order_refund' === $order->get_type() ) {
+		$order = wc_get_order( $order->get_parent_id() );
+		
+		if ( ! $order ) {
+			return false;
+		}
+	}
+	
 	// Check if order is VAT exempt based on order meta
 	$vat_exempt_meta_key = apply_filters( 'wpo_wcpdf_order_vat_exempt_meta_key', 'is_vat_exempt', $order );
 	$is_vat_exempt       = apply_filters(  'woocommerce_order_is_vat_exempt', 'yes' === $order->get_meta( $vat_exempt_meta_key ), $order );