Offene Chargen mit Sicherheitsabfrage loeschen

modules/erp/lager/api/lot.php

@@ -65,6 +65,15 @@ try {
         json_response(200, ['ok' => true, 'lot' => $updatedLot, 'balance' => get_stock_lot_balance($pdo, (int) ($data['lotId'] ?? 0))]);
     }
 
+    if ($action === 'delete_open_lot') {
+        delete_open_stock_lot(
+            $pdo,
+            (int) ($data['lotId'] ?? 0),
+            (string) ($currentUser['username'] ?? $currentUser['email'] ?? 'unknown')
+        );
+        json_response(200, ['ok' => true]);
+    }
+
     if ($action === 'prepare_lot') {
         $productId = (int) ($data['productId'] ?? 0);
         $lotNumber = trim((string) ($data['lotNumber'] ?? ''));

modules/erp/lager/service.php

@@ -809,6 +809,58 @@ function get_or_create_open_lot(PDO $pdo, int $productId): int
     return (int) $newLotId;
 }
 
+function delete_open_stock_lot(PDO $pdo, int $lotId, string $changedBy): void
+{
+    if ($lotId <= 0 || trim($changedBy) === '') {
+        throw new InvalidArgumentException('Offene Charge und Bediener sind erforderlich');
+    }
+
+    $startedTransaction = !$pdo->inTransaction();
+    if ($startedTransaction) {
+        $pdo->beginTransaction();
+    }
+
+    try {
+        $lotStmt = $pdo->prepare(
+            "SELECT id, product_id, lot_number, manufacturer_party_id, manufacturer_lot_number,
+                    mfg_date, expiry_date, purchase_date, status
+             FROM stock_lot
+             WHERE id = :id
+             FOR UPDATE"
+        );
+        $lotStmt->execute([':id' => $lotId]);
+        $lot = $lotStmt->fetch();
+        if (!is_array($lot)) {
+            throw new InvalidArgumentException('Charge nicht gefunden');
+        }
+        if ((string) $lot['status'] !== 'open') {
+            throw new InvalidArgumentException('Nur offene Chargen koennen geloescht werden');
+        }
+
+        system_write_audit_log($pdo, 'stock_lot', (string) $lotId, 'deleted', $changedBy, $lot, null, [
+            'module' => 'erp.lager',
+        ]);
+
+        $moveStmt = $pdo->prepare('DELETE FROM stock_move WHERE lot_id = :lot_id');
+        $moveStmt->execute([':lot_id' => $lotId]);
+
+        $deleteStmt = $pdo->prepare('DELETE FROM stock_lot WHERE id = :id AND status = \'open\'');
+        $deleteStmt->execute([':id' => $lotId]);
+        if ($deleteStmt->rowCount() !== 1) {
+            throw new RuntimeException('Offene Charge konnte nicht geloescht werden');
+        }
+
+        if ($startedTransaction) {
+            $pdo->commit();
+        }
+    } catch (Throwable $error) {
+        if ($startedTransaction && $pdo->inTransaction()) {
+            $pdo->rollBack();
+        }
+        throw $error;
+    }
+}
+
 function replace_virtual_lot_allocation(
     PDO $pdo,
     int $allocationId,