feat: add burger order limits

Author: sinedied

packages/burger-api/README.md

@@ -58,12 +58,9 @@ You can view the complete API documentation by opening the [Swagger Editor](http
 
 ### Order Limits
 
-A user can have a maximum of **5 active orders** (status: `pending` or `in-preparation`) at a time. If you try to place more, the API will return:
+A user can have a maximum of **5 active orders** (status: `pending` or `in-preparation`) at a time. Additionally, a single order cannot exceed **50 burgers** in total across all items.
 
-- HTTP 429 Too Many Requests
-- Body: `{ "error": "Too many active orders: limit is 5 per user" }`
-
-This ensures fair use and prevents abuse.
+These limits ensure fair use and prevent abuse.
 
 ### Order Status Automation
 

packages/burger-api/openapi.yaml

@@ -110,6 +110,10 @@ paths:
       description: |
         Places a new order with burgers (requires userId).
         French fries are included as a side for every burger order.
+        
+        Limitations:
+        - Maximum 5 active orders per user
+        - Maximum 50 burgers total per order
       operationId: createOrder
       requestBody:
         required: true
@@ -536,6 +540,7 @@ components:
           example: "user123"
         items:
           type: array
+          description: List of burger items (maximum 50 burgers total across all items)
           items:
             type: object
             properties:

packages/burger-api/src/functions/orders-post.ts

@@ -67,6 +67,15 @@ app.http('orders-post', {
       const orderItems: OrderItem[] = [];
       let totalPrice = 0;
 
+      // Calculate total burger count and validate limit
+      const totalBurgerCount = requestBody.items.reduce((sum, item) => sum + item.quantity, 0);
+      if (totalBurgerCount > 50) {
+        return {
+          status: 400,
+          jsonBody: { error: 'Order cannot exceed 50 burgers in total' }
+        };
+      }
+
       for (const item of requestBody.items) {
 
         // Validate quantity is a positive integer