Ergaenze offene Chargen und Fehlbestands-Hinweis

modules/erp/lager/api/lot.php

@@ -65,6 +65,33 @@ try {
         json_response(200, ['ok' => true, 'lot' => $updatedLot, 'balance' => get_stock_lot_balance($pdo, (int) ($data['lotId'] ?? 0))]);
     }
 
+    if ($action === 'prepare_lot') {
+        $productId = (int) ($data['productId'] ?? 0);
+        $lotNumber = trim((string) ($data['lotNumber'] ?? ''));
+        if ($lotNumber === '') {
+            throw new InvalidArgumentException('Naurua-Chargennummer fehlt');
+        }
+        $lotId = get_or_create_open_lot($pdo, $productId);
+        $manufacturerPartyId = $data['manufacturerPartyId'] ?? null;
+        $manufacturerPartyId = $manufacturerPartyId === null || $manufacturerPartyId === '' ? null : (int) $manufacturerPartyId;
+        $receiptQty = isset($data['receiptQty']) && $data['receiptQty'] !== '' ? (float) $data['receiptQty'] : 0.0;
+        $preparedLot = update_stock_lot_traceability(
+            $pdo,
+            $lotId,
+            $manufacturerPartyId,
+            isset($data['manufacturerLotNumber']) ? (string) $data['manufacturerLotNumber'] : null,
+            isset($data['mfgDate']) ? (string) $data['mfgDate'] : null,
+            isset($data['expiryDate']) ? (string) $data['expiryDate'] : null,
+            isset($data['purchaseDate']) ? (string) $data['purchaseDate'] : null,
+            (string) ($currentUser['username'] ?? $currentUser['email'] ?? 'unknown'),
+            $receiptQty,
+            0.0,
+            0.0,
+            $lotNumber
+        );
+        json_response(200, ['ok' => true, 'lot' => $preparedLot, 'balance' => get_stock_lot_balance($pdo, $lotId)]);
+    }
+
     json_response(422, ['ok' => false, 'error' => 'Unsupported action']);
 } catch (JsonException) {
     json_response(400, ['ok' => false, 'error' => 'Invalid JSON payload']);