From 37bef2d8240f5020117cebd5df172ae01d22da97 Mon Sep 17 00:00:00 2001
From: johnnyq <johnny@pittpc.com>
Date: Fri, 15 Aug 2025 19:12:45 -0400
Subject: [PATCH] Check Stock if product type is a product before adding the
 line item

---
 user/invoice.php      |  1 +
 user/post/invoice.php | 28 +++++++++++++++++++++++++++-
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/user/invoice.php b/user/invoice.php
index b50564ae..785bc7f3 100644
--- a/user/invoice.php
+++ b/user/invoice.php
@@ -784,6 +784,7 @@ require_once "../includes/footer.php";
 <link rel="stylesheet" href="../plugins/jquery-ui/jquery-ui.min.css">
 <script src="../plugins/jquery-ui/jquery-ui.min.js"></script>
 <script>
+
 $(function() {
     var availableProducts = <?php echo $json_products ?? '[]'?>;
 
diff --git a/user/post/invoice.php b/user/post/invoice.php
index ad4c37af..836f43ea 100644
--- a/user/post/invoice.php
+++ b/user/post/invoice.php
@@ -524,7 +524,29 @@ if (isset($_POST['add_invoice_item'])) {
     
     // Update Product Inventory
     if ($product_id) {
-        mysqli_query($mysqli,"INSERT INTO product_stock SET stock_qty = -$qty, stock_note = 'QTY $qty - Invoice $invoice_id', stock_product_id = $product_id");
+         // Only enforce stock for tangible products
+        $product_type = sanitizeInput(getFieldById('products', $product_id, 'product_type'));
+        if ($product_type === 'product') {
+
+            // Current available stock
+            $sql = mysqli_query(
+                $mysqli,
+                "SELECT COALESCE(SUM(stock_qty), 0) AS available_stock
+                 FROM product_stock
+                 WHERE stock_product_id = $product_id"
+            );
+            $row = mysqli_fetch_array($sql);
+            $available_stock = floatval($row['available_stock']);
+
+            // Enough in stock?
+            if ($available_stock >= $qty) {
+                mysqli_query($mysqli,"INSERT INTO product_stock SET stock_qty = -$qty, stock_note = 'QTY $qty - Invoice $invoice_id', stock_product_id = $product_id");
+            } else {
+                // Not enough in stock: stop and notify
+                flash_alert("Not Enough <strong>$name</strong> in stock", 'error');
+                redirect();
+            }
+        }
     }
 
     // Tax
@@ -602,6 +624,7 @@ if (isset($_POST['edit_item'])) {
     $qty = floatval($_POST['qty']);
     $price = floatval($_POST['price']);
     $tax_id = intval($_POST['tax_id']);
+    $product_id = intval($_POST['product_id']);
 
     $subtotal = $price * $qty;
 
@@ -639,6 +662,9 @@ if (isset($_POST['edit_item'])) {
         $row = mysqli_fetch_array($sql_invoice_total);
         $new_invoice_amount = floatval($row['invoice_total']) - $invoice_discount;
 
+        
+
+
         mysqli_query($mysqli,"UPDATE invoices SET invoice_amount = $new_invoice_amount WHERE invoice_id = $invoice_id");
 
         logAction("Invoice", "Edit", "$session_name edited item $name on invoice $invoice_prefix$invoice_number", $client_id, $invoice_id);