Add order_id handling in orderBookingRoute

- Added `order_id` extraction logic with validation in `getTargetOrderId` method.
- Included `order_id` in the data update process for order bookings.
- Updated `order_bookings_o` class to support `order_id` property.

services/nginx/app/routes/orderBookingRoute.php

@@ -139,6 +139,7 @@ class orderBookingRoute
             $po = self::getTargetPo(false); // String | Null
             $pickup = self::getTargetPickup(false); // Bool | Null
             $items = self::getTargetItems(false); // Array of order_items_o objects
+            $order_id = self::getTargetOrderId(false); // Int | Null
             /**
              * Authentication
              */
@@ -185,6 +186,7 @@ class orderBookingRoute
                 ...(isset($po) ? ['po' => $po] : []),
                 ...(isset($pickup) ? ['pickup' => $pickup] : []),
                 ...(isset($items) ? ['items' => $items] : []),
+                ...(isset($order_id) ? ['order_id' => $order_id] : []),
             ];
             $object->update($data);
             /**
@@ -219,6 +221,28 @@ class orderBookingRoute
         return $object;
     }
 
+    private function getTargetOrderId(bool $required = true): int|string|null
+    {
+        global $response;
+        $parameter = 'order_id';
+        $error = 'Invalid order ID';
+        if (!$required && !$this->isParametersSet([$parameter])) return null;
+        self::requireParameters([$parameter]);
+        if ($required) {
+            self::requireType(self::getParameter($parameter), self::type_int());
+        } else {
+            self::requireTypeIn(self::getParameter($parameter), [self::type_int(), self::type_null()]);
+            // Check if the value is null
+            if ($this->getParameter($parameter) === null) return "null";
+        }
+        self::requireMinLength($parameter, 1);
+        self::requireMaxLength($parameter, 9);
+        $value = (int)self::getParameter($parameter);
+        self::requireMinValue($value, 1);
+        self::requireMaxValue($value, 999999999);
+        return $value;
+    }
+
     private function getTargetCustomer(bool $required = true): users_o|null
     {
         global $response;