public async Task <IActionResult> PlaceOrder([FromBody] CreateOrderCommand createOrderCommand)
        {
            var tasks = createOrderCommand.OrderItems
                        .Select(item => _productQueries.GetProductBySKUAsync(item.SKU)
                                .ContinueWith((productAsync) =>
            {
                var product = productAsync.Result;
                if (product != null)
                {
                    item.ProductId   = product.Id;
                    item.UnitPrice   = product.UnitPrice;
                    item.ProductName = product.ProductName;
                }
            }));

            await Task.WhenAll(tasks);

            var commandResult = await _mediator.Send(createOrderCommand);

            if (!commandResult)
            {
                return(BadRequest());
            }

            return(Ok());
        }
        public async Task <ActionResult <bool> > Post([FromBody] CreateOrderCommand createOrderCommand)
        {
            foreach (var item in createOrderCommand.OrderItems)
            {
                var product = await _productQueries.GetProductBySKUAsync(item.SKU);

                if (product != null)
                {
                    item.ProductId = product.Id;
                    item.UnitPrice = product.UnitPrice;
                }
            }

            return(await _mediator.Send(createOrderCommand));
        }