new grace day checker

move_fund_invoice_due_date.php → move_invoice_due_date.php

@@ -1,6 +1,6 @@
 <?php
 
-// this hook offsets the due date of an invoice for add fund using order grace days
+// this hook offsets the due date of an invoice using order grace days
 
 if (!defined("WHMCS"))
     die("This file cannot be accessed directly");
@@ -13,12 +13,13 @@ function get_grace() {
 
 add_hook('InvoiceCreation', 1, function($vars) {
     $invoice = localAPI('GetInvoice', ['invoiceid' => $vars['invoiceid']]);
-    if($invoice['duedate'] == $invoice['date']) {
+    $dueDate = date_create($invoice['duedate']);
+    $invoiceDate = date_create($invoice['date']);
+    if($dueDate <= $invoiceDate) {
         $grace = get_grace();
         array_shift($invoice);
-        $dateTime = date_create($invoice['duedate']);
-        date_add($dateTime,date_interval_create_from_date_string("$grace days"));
-        $invoice['duedate'] = date_format($dateTime, 'Y-m-d');
+        date_add($invoiceDate,date_interval_create_from_date_string("$grace days"));
+        $invoice['duedate'] = date_format($invoiceDate, 'Y-m-d');
         $result = localAPI('UpdateInvoice', $invoice);
         if($result['result'] == 'success') {
             return true;