Enhance vehiclesRoute to include customer status checks for known vehicles

- Added logic to determine if a known vehicle has been assigned to a specific customer and retrieve the customer name.
- Integrated checks to handle barred customers by resetting vehicle status to `unknown` and clearing customer details.
- Ensured support for scenarios with multiple known customers, marking vehicles accordingly.

services/nginx/app/routes/vehiclesRoute.php

@@ -831,6 +831,26 @@ class vehiclesRoute
                     }
                 } elseif ($isKnown) {
                     $status = 'known';
+                    // Check if the vehicle previously only has been set to a specific customer, and if so, get the customer name
+                    $orders_o = new orders_o();
+                    $order = $orders_o->getFieldsWhere([
+                        'reg_1' => $reg,
+                        'deleted_at' => null, // Only consider non-deleted orders
+                    ], ['customer_id']);
+                    $customer_ids = array_unique(array_map(function ($row) {
+                        return (int)$row['customer_id'];
+                    }, $order));
+                    if (count($customer_ids) === 1) {
+                        $customer_number = $customer_ids[0];
+                        // Check if the customer is barred (only if known)
+                        if ($customer_number && (new users_o())->isCustomerBarred((int)$customer_number)) {
+                            $status = 'unknown'; // If the customer is barred, we set the status to unknown (as we don't need to know about barred known vehicles)
+                            $customer_number = null; // Clear the customer number as well
+                        }
+                    } else {
+                        // Set the customer name to multiple known customers
+                        $customer_name = 'Multiple known customers';
+                    }
                 } elseif ($isUnknown) {
                     $status = 'unknown';
                 }