using System;

​

namespace Test.HttpClient{

    internal class RoutePaths {

        public string Route { get; private set; }

        private RoutePaths(string route){

            Route = route;

        }

        public static RoutePaths ProductsRoute { get { return new RoutePaths("/products"); } }

        public static RoutePaths ProductRoute(string productId) => new RoutePaths("/products" + "/" + productId);

        public static RoutePaths SkusRoute { get { return new RoutePaths("/skus"); } }

        public string BuildRoute(bool isProd){

            string routeVersion = isProd ? RouteVersions.ProdRoute.Version : RouteVersions.StagRoute.Version;

            return routeVersion+Route;

        }

    }

    internal class RouteVersions {

        public string Version { get; private set; }

        private RouteVersions(string version){

            Version = version;

        }

        public static RouteVersions ProdRoute { get { return new RouteVersions("/v1"); } }

        public static RouteVersions StagRoute { get { return new RouteVersions("/v0"); } }

    }

    public class HttpClient{

        public string CreateProductsAsync(bool isProd){

            return RoutePaths.ProductsRoute.BuildRoute(isProd);

        }

        public string CreateProductAsync(bool isProd){

            return RoutePaths.ProductRoute("12").BuildRoute(isProd);

        }

    }

}

public class Program

{   

    public static void Main()

    {

        Test.HttpClient.HttpClient http = new Test.HttpClient.HttpClient();

        bool isProd = false;

        Console.WriteLine(http.CreateProductsAsync(isProd));

        Console.WriteLine(http.CreateProductAsync(isProd));

    }

}