public async Task <ActionResult> Index(CreateShipmentModel viewModel)
        {
            var url    = $"{Endpoints.Purchases}/Client/{ParseInt(viewModel.ClientId)}";
            var orders = await GetEntities <IEnumerable <Order> >(url);

            if (orders.Count() > 0)
            {
                var ordersGroups = orders.GroupBy(x => x.Product.Category.Name);
                foreach (var ordersGroup in ordersGroups)
                {
                    var shipment = new Shipment
                    {
                        Orders = new List <ShipmentOrder>()
                    };

                    foreach (var order in ordersGroup)
                    {
                        shipment.Orders.Add(new ShipmentOrder {
                            OrderId = order.Id
                        });
                    }

                    await PostEntity(shipment);
                }
            }

            return(await Index());
        }
        public override async Task <ActionResult> Create()
        {
            var items   = new List <Client>();
            var clients = await GetEntities <IEnumerable <Client> >(Endpoints.Clients);

            foreach (var client in clients)
            {
                var url    = $"{Endpoints.Purchases}/Client/{client.Id}";
                var orders = await GetEntities <IEnumerable <Order> >(url);

                if (orders.Count() > 0)
                {
                    items.Add(client);
                }
            }

            var createModel = new CreateShipmentModel
            {
                Clients = GetDropDownList(items),
            };

            return(View(createModel));
        }