eShopOnContainers/src/Web/WebMVC/Infrastructure/API.cs

namespace WebMVC.Infrastructure
{
    public static class API
    {
        public static class Basket
        {
            public static string GetBasket(string baseUri, string basketId)
            {
                return $"{baseUri}/{basketId}";
            }

            public static string UpdateBasket(string baseUri)
            {
                return baseUri;
            }

            public static string CheckoutBasket(string baseUri)
            {
                return $"{baseUri}/checkout";
            }

            public static string CleanBasket(string baseUri, string basketId)
            {
                return $"{baseUri}/{basketId}";
            }
        }

        public static class Order
        {
            public static string GetOrder(string baseUri, string orderId)
            {
                return $"{baseUri}/{orderId}";
            }

            public static string GetAllMyOrders(string baseUri)
            {
                return baseUri;
            }

            public static string AddNewOrder(string baseUri)
            {
                return $"{baseUri}/new";
            }

            public static string CancelOrder(string baseUri)
            {
                return $"{baseUri}/cancel";
            }

            public static string ShipOrder(string baseUri)
            {
                return $"{baseUri}/ship";
            }
        }

        public static class Catalog
        {
            public static string GetAllCatalogItems(string baseUri, int page, int take, int? brand, int? type)
            {
                var filterQs = "";

                if (brand.HasValue || type.HasValue)
                {
                    var brandQs = (brand.HasValue) ? brand.Value.ToString() : "null";
                    var typeQs = (type.HasValue) ? type.Value.ToString() : "null";
                    filterQs = $"/type/{typeQs}/brand/{brandQs}";
                }

                return $"{baseUri}items{filterQs}?pageIndex={page}&pageSize={take}";
            }

            public static string GetAllBrands(string baseUri)
            {
                return $"{baseUri}catalogBrands";
            }

            public static string GetAllTypes(string baseUri)
            {
                return $"{baseUri}catalogTypes";
            }
        }
    }
}