def checkout()

in server/store/views.py [0:0]

• 43 lines of code
• 10 McCabe index (conditional complexity)

def checkout(request):
    def lift_item_status(data):
        status = ""
        for item in data["items"]:
            if "status" in item:
                for i in item["status"]:
                    status = str(i)

        return status

    serializer = CartSerializer(data=json.loads(request.body))

    if not serializer.is_valid():
        status_code = 400
        status = "validation_error"
        if "payment" in serializer.errors:
            status_code = 501
            status = serializer.errors["payment"]["method"][0].code
        if "items" in serializer.errors:
            status = lift_item_status(serializer.errors)
        return JsonResponse(
            {"status": status, "errors": serializer.errors}, status=status_code
        )

    cart = serializer.validated_data

    items = []
    for item in cart["items"]:
        product = get_object_or_404(Product, id=item["id"])
        count = item["countRequested"]

        product.inventory_count -= count
        product.save()
        for _ in range(count):
            Transaction.objects.create(
                datetime=timezone.now(), product_id=product, unit_price=product.price
            )
        items.append(
            {"id": product.id, "countRequested": count, "countFulfilled": count}
        )

        if product.inventory_count == 0:
            log_error(
                "INVENTORY_SOLDOUT_ERROR",
                "A purchase just caused a product to sell out. More inventory will be required.",
                product,
            )

    response = CheckoutSerializer(data={"status": "complete", "items": items})
    response.is_valid()
    return JsonResponse(response.data)