From ccf7854e6cc94dd8e04e9fd843f8f82e2732524d Mon Sep 17 00:00:00 2001
From: seb <sebgreenbus@gmail.com>
Date: Sat, 22 Aug 2026 05:40:06 +0200
Subject: [PATCH] u

---
 .env.example                | 2 ++
 API.md                      | 4 +++-
 src/queries/product-list.js | 9 ++++++++-
 3 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/.env.example b/.env.example
index 108060a..4fb9647 100644
--- a/.env.example
+++ b/.env.example
@@ -26,6 +26,8 @@ LANGUAGE_ID=1
 
 # Product sync (tSteuerzone.cName used to look up tax rates per tSteuerklasse)
 TAX_ZONE_NAME=Zone-EU
+# Warehouse ID for inventory stock (vLagerbestandProLager)
+WARENLAGER_ID=1
 
 # Shop filter: active shop is queried from tShopSubshop at startup
 
diff --git a/API.md b/API.md
index 092da6b..1035b88 100644
--- a/API.md
+++ b/API.md
@@ -247,10 +247,12 @@ Notable fields:
 | `prices` | One entry per customer group |
 | `isCompositeProduct` | `"1"` if the article is a Stückliste parent |
 | `imghash` | Pass to `/v1/pimage?path=...` |
+| `use_stock` | `"1"` if `cLagerAktiv = 'Y'`, otherwise `"0"` |
+| `quantity` | Stock quantity from `dbo.vLagerbestandProLager` for configured `WARENLAGER_ID` |
 | Deposit fields | Present when JTL-POS Pfand attributes are set |
 | `attributes` | Article attributes from `tArtikelAttribut` (incl. Pfand) |
 
-Many other product fields are filled with static defaults (`sort`, `use_stock`, `unit`, etc.) for JTL-POS compatibility.
+Many other product fields are filled with static defaults (`sort`, `unit`, `PLU`, etc.) for JTL-POS compatibility.
 
 **Node only:** `prices[]` applies per–customer-group net overrides from `tPreis` / `tPreisDetail`. C++ currently fills every group with the base gross price.
 
diff --git a/src/queries/product-list.js b/src/queries/product-list.js
index 249ecdc..e3d8845 100644
--- a/src/queries/product-list.js
+++ b/src/queries/product-list.js
@@ -8,6 +8,7 @@ import { getActiveShopId } from '../shop.js';
 
 const LANGUAGE_ID = Number(process.env.LANGUAGE_ID) || 1;
 const TAX_ZONE_NAME = process.env.TAX_ZONE_NAME || 'Zone-EU';
+const WARENLAGER_ID = Number(process.env.WARENLAGER_ID) || Number(process.env.JTL_KWARENLAGER) || 1;
 
 const PRODUCT_LIST_SQL = `
 WITH TaxRates AS (
@@ -53,11 +54,14 @@ SELECT TOP (@limit)
     FROM Pos.vProductVariant pv
     WHERE pv.kProduct = a.kArtikel
   ) AS variantName,
-  a.cBarcode AS barcode
+  a.cBarcode AS barcode,
+  a.cLagerAktiv,
+  ISNULL(v.fBestand, 0) AS fBestand
 FROM dbo.tArtikel a
 INNER JOIN dbo.tArtikelBeschreibung ab ON ab.kArtikel = a.kArtikel AND ab.kSprache = @languageId
 LEFT JOIN TaxRates tr ON tr.kSteuerklasse = a.kSteuerklasse
 LEFT JOIN ImageRV ir ON ir.kArtikel = a.kArtikel
+LEFT JOIN dbo.vLagerbestandProLager v ON v.kArtikel = a.kArtikel AND v.kWarenlager = @warenlagerId
 WHERE a.cAktiv = 'Y'
   AND (@kShop = 0 OR EXISTS (
     SELECT 1 FROM dbo.tKategorieArtikel ka
@@ -129,6 +133,7 @@ export async function getProductList({ cursor = 0, limit = 20 } = {}) {
       .input('languageId', sql.Int, LANGUAGE_ID)
       .input('taxZoneName', sql.NVarChar, TAX_ZONE_NAME)
       .input('kShop', sql.Int, getActiveShopId())
+      .input('warenlagerId', sql.Int, WARENLAGER_ID)
       .query(PRODUCT_LIST_SQL),
     getCustomerGroupIds(),
   ]);
@@ -209,6 +214,8 @@ export async function getProductList({ cursor = 0, limit = 20 } = {}) {
       variants: product.variantName ?? '',
       isCompositeProduct: product.isCompositeProduct,
       attributes: articleAttributes?.attributes ?? [],
+      use_stock: product.cLagerAktiv === 'Y' || product.cLagerAktiv === '1' ? '1' : '0',
+      quantity: String(product.fBestand ?? 0),
       ...(articleAttributes?.deposit ?? {}),
     };
   });