Add coupon support to api services

src/ApiGateways/Envoy/config/webshopping/envoy.yaml

@@ -72,6 +72,19 @@ static_resources:
                 route:
                   auto_host_rewrite: true
                   cluster: basket
+              - name: "cp-short"
+                match:
+                  prefix: "/cp/"
+                route:
+                  auto_host_rewrite: true
+                  prefix_rewrite: "/coupon-api/"
+                  cluster: coupon
+              - name: "cp-long"
+                match:
+                  prefix: "/coupon-api/"
+                route:
+                  auto_host_rewrite: true
+                  cluster: coupon
               - name: "agg"
                 match:
                   prefix: "/"
@@ -140,3 +153,11 @@ static_resources:
     - socket_address:
         address: ordering-signalrhub
         port_value: 80
+  - name: coupon
+    connect_timeout: 0.25s
+    type: strict_dns
+    lb_policy: round_robin
+    hosts:
+    - socket_address:
+        address: coupon-api
+        port_value: 80

src/ApiGateways/Web.Bff.Shopping/aggregator/Config/UrlsConfig.cs

@@ -37,5 +37,7 @@ public class UrlsConfig
     public string GrpcCatalog { get; set; }
 
     public string GrpcOrdering { get; set; }
+
+    public string Coupon { get; set; }
 }
 

src/ApiGateways/Web.Bff.Shopping/aggregator/Controllers/BasketController.cs

@@ -1,4 +1,6 @@
-namespace Microsoft.eShopOnContainers.Web.Shopping.HttpAggregator.Controllers;
+using Newtonsoft.Json;
+
+namespace Microsoft.eShopOnContainers.Web.Shopping.HttpAggregator.Controllers;
 
 [Route("api/v1/[controller]")]
 [Authorize]
@@ -7,11 +9,13 @@ public class BasketController : ControllerBase
 {
     private readonly ICatalogService _catalog;
     private readonly IBasketService _basket;
+    private readonly ICouponService _coupon;
 
-    public BasketController(ICatalogService catalogService, IBasketService basketService)
+    public BasketController(ICatalogService catalogService, IBasketService basketService, ICouponService couponService)
     {
         _catalog = catalogService;
         _basket = basketService;
+        _coupon = couponService;
     }
 
     [HttpPost]
@@ -151,4 +155,24 @@ public class BasketController : ControllerBase
 
         return Ok();
     }
+
+    [HttpGet]
+    [Route("coupon/{code}")]
+    [ProducesResponseType((int)HttpStatusCode.NotFound)]
+    [ProducesResponseType(typeof(CouponData), (int)HttpStatusCode.OK)]
+    public async Task<ActionResult<CouponData>> CheckCouponAsync(string code)
+    {
+        var response = await _coupon.CheckCouponByCodeNumberAsync(code);
+
+        if (!response.IsSuccessStatusCode)
+        {
+            return NotFound();
+        }
+
+        var couponResponse = await response.Content.ReadAsStringAsync();
+
+        var data = JsonConvert.DeserializeObject<CouponData>(couponResponse);
+
+        return Ok(data);
+    }
 }

src/ApiGateways/Web.Bff.Shopping/aggregator/Models/CouponData.cs

@@ -0,0 +1,7 @@
+namespace Microsoft.eShopOnContainers.Web.Shopping.HttpAggregator.Models;
+public class CouponData
+{
+    public int Discount { get; set; }
+
+    public string Code { get; set; }
+}

src/ApiGateways/Web.Bff.Shopping/aggregator/Services/CouponService.cs

@@ -0,0 +1,28 @@
+namespace Microsoft.eShopOnContainers.Web.Shopping.HttpAggregator.Services;
+
+public class CouponService : ICouponService
+{
+    public readonly HttpClient _httpClient;
+    private readonly UrlsConfig _urls;
+    private readonly ILogger<CouponService> _logger;
+
+    public CouponService(HttpClient httpClient, IOptions<UrlsConfig> config, ILogger<CouponService> logger)
+    {
+        _urls = config.Value;
+        _httpClient = httpClient;
+        _logger = logger;
+    }
+
+    public async Task<HttpResponseMessage> CheckCouponByCodeNumberAsync(string codeNumber)
+    {
+        _logger.LogInformation("Call coupon api with codenumber: {codeNumber}", codeNumber);
+
+        var url = new Uri($"{_urls.Catalog}/api/v1/coupon/{codeNumber}");
+
+        var response = await _httpClient.GetAsync(url);
+
+        _logger.LogInformation("Coupon api response: {@response}", response);
+
+        return response;
+    }
+}

src/ApiGateways/Web.Bff.Shopping/aggregator/Services/ICouponService.cs

@@ -0,0 +1,6 @@
+namespace Microsoft.eShopOnContainers.Web.Shopping.HttpAggregator.Services;
+
+public interface ICouponService
+{
+    Task<HttpResponseMessage> CheckCouponByCodeNumberAsync(string codeNumber);
+}

src/ApiGateways/Web.Bff.Shopping/aggregator/Startup.cs

@@ -1,4 +1,6 @@
-namespace Microsoft.eShopOnContainers.Web.Shopping.HttpAggregator;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace Microsoft.eShopOnContainers.Web.Shopping.HttpAggregator;
 
 public class Startup
 {
@@ -12,7 +14,7 @@ public class Startup
     // This method gets called by the runtime. Use this method to add services to the container.
     public void ConfigureServices(IServiceCollection services)
     {
-        services.AddHealthChecks()
+        var healthCheckBuilder = services.AddHealthChecks()
             .AddCheck("self", () => HealthCheckResult.Healthy())
             .AddUrlGroup(new Uri(Configuration["CatalogUrlHC"]), name: "catalogapi-check", tags: new string[] { "catalogapi" })
             .AddUrlGroup(new Uri(Configuration["OrderingUrlHC"]), name: "orderingapi-check", tags: new string[] { "orderingapi" })
@@ -20,6 +22,13 @@ public class Startup
             .AddUrlGroup(new Uri(Configuration["IdentityUrlHC"]), name: "identityapi-check", tags: new string[] { "identityapi" })
             .AddUrlGroup(new Uri(Configuration["PaymentUrlHC"]), name: "paymentapi-check", tags: new string[] { "paymentapi" });
 
+        // HC dependency is configured this way to save one build step on ACR
+        var couponHealthEndpoint = Configuration["CouponUrlHC"];
+        if (!string.IsNullOrWhiteSpace(couponHealthEndpoint))
+        {
+            healthCheckBuilder.AddUrlGroup(new Uri(couponHealthEndpoint), name: "couponapi-check", tags: new string[] { "couponapi" });
+        }
+
         services.AddCustomMvc(Configuration)
             .AddCustomAuthentication(Configuration)
             .AddDevspaces()
@@ -163,6 +172,9 @@ public static class ServiceCollectionExtensions
             .AddHttpMessageHandler<HttpClientAuthorizationDelegatingHandler>()
             .AddDevspacesSupport();
 
+        services.AddHttpClient<ICouponService, CouponService>()
+    .       AddHttpMessageHandler<HttpClientAuthorizationDelegatingHandler>();
+
         return services;
     }
 

src/Services/Basket/Basket.API/Controllers/BasketController.cs

@@ -58,9 +58,24 @@ public class BasketController : ControllerBase
 
         var userName = this.HttpContext.User.FindFirst(x => x.Type == ClaimTypes.Name).Value;
 
-        var eventMessage = new UserCheckoutAcceptedIntegrationEvent(userId, userName, basketCheckout.City, basketCheckout.Street,
+        var eventMessage = new UserCheckoutAcceptedIntegrationEvent(
-            basketCheckout.State, basketCheckout.Country, basketCheckout.ZipCode, basketCheckout.CardNumber, basketCheckout.CardHolderName,
+            userId, 
-            basketCheckout.CardExpiration, basketCheckout.CardSecurityNumber, basketCheckout.CardTypeId, basketCheckout.Buyer, basketCheckout.RequestId, basket);
+            userName, 
+            basketCheckout.City,
+            basketCheckout.Street,
+            basketCheckout.State, 
+            basketCheckout.Country, 
+            basketCheckout.ZipCode,
+            basketCheckout.CardNumber, 
+            basketCheckout.CardHolderName,
+            basketCheckout.CardExpiration,
+            basketCheckout.CardSecurityNumber, 
+            basketCheckout.CardTypeId,
+            basketCheckout.Buyer,
+            basketCheckout.RequestId, 
+            basket,
+            basketCheckout.Coupon,
+            basketCheckout.Discount);
 
         // Once basket is checkout, sends an integration event to
         // ordering.api to convert basket to order and proceeds with

src/Services/Basket/Basket.API/IntegrationEvents/Events/UserCheckoutAcceptedIntegrationEvent.cs

@@ -34,10 +34,16 @@ public record UserCheckoutAcceptedIntegrationEvent : IntegrationEvent
 
     public CustomerBasket Basket { get; }
 
+    public string CodeDiscount { get; set; }
+
+    public int Discount { get; set; }
+
     public UserCheckoutAcceptedIntegrationEvent(string userId, string userName, string city, string street,
         string state, string country, string zipCode, string cardNumber, string cardHolderName,
         DateTime cardExpiration, string cardSecurityNumber, int cardTypeId, string buyer, Guid requestId,
-        CustomerBasket basket)
+        CustomerBasket basket,
+            string codeDiscount,
+            int discount)
     {
         UserId = userId;
         UserName = userName;
@@ -54,6 +60,8 @@ public record UserCheckoutAcceptedIntegrationEvent : IntegrationEvent
         Buyer = buyer;
         Basket = basket;
         RequestId = requestId;
+        CodeDiscount = codeDiscount;
+        Discount = discount;
     }
 
 }

src/Services/Basket/Basket.API/Model/BasketCheckout.cs

@@ -25,4 +25,8 @@ public class BasketCheckout
     public string Buyer { get; set; }
 
     public Guid RequestId { get; set; }
+
+    public string Coupon { get; set; }
+    
+    public int Discount { get; set; }
 }

src/Services/Identity/Identity.API/Configuration/Config.cs

@@ -15,6 +15,7 @@ namespace Microsoft.eShopOnContainers.Services.Identity.API.Configuration
                 new ApiResource("webshoppingagg", "Web Shopping Aggregator"),
                 new ApiResource("orders.signalrhub", "Ordering Signalr Hub"),
                 new ApiResource("webhooks", "Webhooks registration Service"),
+                new ApiResource("coupon", "Coupon Service"),
             };
         }
 
@@ -53,7 +54,8 @@ namespace Microsoft.eShopOnContainers.Services.Identity.API.Configuration
                         "basket",
                         "webshoppingagg",
                         "orders.signalrhub",
-                        "webhooks"
+                        "webhooks",
+                        "coupon"
                     },
                 },
                 new Client
@@ -79,7 +81,8 @@ namespace Microsoft.eShopOnContainers.Services.Identity.API.Configuration
                         "orders",
                         "basket",
                         "mobileshoppingagg",
-                        "webhooks"
+                        "webhooks",
+                        "coupon"
                     },
                     //Allow requesting refresh tokens for long lived API access
                     AllowOfflineAccess = true,
@@ -117,7 +120,8 @@ namespace Microsoft.eShopOnContainers.Services.Identity.API.Configuration
                         "basket",
                         "webshoppingagg",
                         "orders.signalrhub",
-                        "webhooks"
+                        "webhooks",
+                        "coupon"
                     },
                     AccessTokenLifetime = 60*60*2, // 2 hours
                     IdentityTokenLifetime= 60*60*2 // 2 hours
@@ -183,7 +187,8 @@ namespace Microsoft.eShopOnContainers.Services.Identity.API.Configuration
                         "orders",
                         "basket",
                         "webshoppingagg",
-                        "webhooks"
+                        "webhooks",
+                        "coupon"
                     },
                 },
                 new Client
@@ -261,6 +266,21 @@ namespace Microsoft.eShopOnContainers.Services.Identity.API.Configuration
                     {
                         "webhooks"
                     }
+                },
+                new Client
+                {
+                    ClientId = "couponswaggerui",
+                    ClientName = "Coupon Swagger UI",
+                    AllowedGrantTypes = GrantTypes.Implicit,
+                    AllowAccessTokensViaBrowser = true,
+
+                    RedirectUris = { $"{clientsUrl["CouponApi"]}/swagger/oauth2-redirect.html" },
+                    PostLogoutRedirectUris = { $"{clientsUrl["CouponApi"]}/swagger/" },
+
+                    AllowedScopes =
+                    {
+                        "coupon"
+                    }
                 }
             };
         }

src/Services/Identity/Identity.API/Data/ConfigurationDbContextSeed.cs

@@ -19,6 +19,7 @@ namespace Microsoft.eShopOnContainers.Services.Identity.API.Data
             clientUrls.Add("WebShoppingAgg", configuration.GetValue<string>("WebShoppingAggClient"));
             clientUrls.Add("WebhooksApi", configuration.GetValue<string>("WebhooksApiClient"));
             clientUrls.Add("WebhooksWeb", configuration.GetValue<string>("WebhooksWebClient"));
+            clientUrls.Add("CouponApi", configuration.GetValue<string>("CouponApiClient"));
 
             if (!context.Clients.Any())
             {

src/Services/Ordering/Ordering.API/Application/Commands/CouponConfirmedCommand.cs

@@ -0,0 +1,17 @@
+namespace Ordering.API.Application.Commands;
+
+public class CouponConfirmedCommand : IRequest<bool>
+{
+
+    [DataMember]
+    public int OrderNumber { get; private set; }
+
+    [DataMember]
+    public int Discount { get; private set; }
+
+    public CouponConfirmedCommand(int orderNumber, int discount)
+    {
+        OrderNumber = orderNumber;
+        Discount = discount;
+    }
+}

src/Services/Ordering/Ordering.API/Application/Commands/CouponConfirmedCommandHandler.cs

@@ -0,0 +1,41 @@
+namespace Ordering.API.Application.Commands;
+
+public class CouponConfirmedCommandHandler : IRequestHandler<CouponConfirmedCommand, bool>
+{
+    private readonly IOrderRepository _orderRepository;
+
+    public CouponConfirmedCommandHandler(IOrderRepository orderRepository)
+    {
+        _orderRepository = orderRepository;
+    }
+
+    public async Task<bool> Handle(CouponConfirmedCommand command, CancellationToken cancellationToken)
+    {
+        var orderToUpdate = await _orderRepository.GetAsync(command.OrderNumber);
+
+        if (orderToUpdate == null)
+        {
+            return false;
+        }
+
+        orderToUpdate.ProcessCouponConfirmed();
+
+        return await _orderRepository.UnitOfWork.SaveEntitiesAsync(cancellationToken);
+    }
+}
+
+public class CouponConfirmIdenfifiedCommandHandler : IdentifiedCommandHandler<CouponConfirmedCommand, bool>
+{
+    public CouponConfirmIdenfifiedCommandHandler(
+        IMediator mediator,
+        IRequestManager requestManager,
+        ILogger<IdentifiedCommandHandler<CouponConfirmedCommand, bool>> logger)
+        : base(mediator, requestManager, logger)
+    {
+    }
+
+    protected override bool CreateResultForDuplicateRequest()
+    {
+        return true;                // Ignore duplicate requests for processing order.
+    }
+}

src/Services/Ordering/Ordering.API/Application/Commands/CreateOrderCommand.cs

@@ -54,6 +54,12 @@ public class CreateOrderCommand
     [DataMember]
     public int CardTypeId { get; private set; }
 
+    [DataMember]
+    public string CodeDiscount { get; private set; }
+
+    [DataMember]
+    public decimal Discount { get; private set; }
+
     [DataMember]
     public IEnumerable<OrderItemDTO> OrderItems => _orderItems;
 
@@ -64,7 +70,7 @@ public class CreateOrderCommand
 
     public CreateOrderCommand(List<BasketItem> basketItems, string userId, string userName, string city, string street, string state, string country, string zipcode,
         string cardNumber, string cardHolderName, DateTime cardExpiration,
-        string cardSecurityNumber, int cardTypeId) : this()
+        string cardSecurityNumber, int cardTypeId, string codeDiscount, decimal discount) : this()
     {
         _orderItems = basketItems.ToOrderItemsDTO().ToList();
         UserId = userId;
@@ -79,6 +85,8 @@ public class CreateOrderCommand
         CardExpiration = cardExpiration;
         CardSecurityNumber = cardSecurityNumber;
         CardTypeId = cardTypeId;
+        CodeDiscount = codeDiscount;
+        Discount = discount;
     }
 
 

src/Services/Ordering/Ordering.API/Application/Commands/CreateOrderCommandHandler.cs

@@ -37,7 +37,7 @@ public class CreateOrderCommandHandler
         // methods and constructor so validations, invariants and business logic 
         // make sure that consistency is preserved across the whole aggregate
         var address = new Address(message.Street, message.City, message.State, message.Country, message.ZipCode);
-        var order = new Order(message.UserId, message.UserName, address, message.CardTypeId, message.CardNumber, message.CardSecurityNumber, message.CardHolderName, message.CardExpiration);
+        var order = new Order(message.UserId, message.UserName, address, message.CardTypeId, message.CardNumber, message.CardSecurityNumber, message.CardHolderName, message.CardExpiration, "", 0);
 
         foreach (var item in message.OrderItems)
         {

src/Services/Ordering/Ordering.API/Application/DomainEventHandlers/OrderCancelled/OrderCancelledDomainEventHandler.cs

@@ -31,7 +31,7 @@ public class OrderCancelledDomainEventHandler
         var order = await _orderRepository.GetAsync(orderCancelledDomainEvent.Order.Id);
         var buyer = await _buyerRepository.FindByIdAsync(order.GetBuyerId.Value.ToString());
 
-        var orderStatusChangedToCancelledIntegrationEvent = new OrderStatusChangedToCancelledIntegrationEvent(order.Id, order.OrderStatus.Name, buyer.Name);
+        var orderStatusChangedToCancelledIntegrationEvent = new OrderStatusChangedToCancelledIntegrationEvent(order.Id, order.OrderStatus.Name, buyer.Name, order.DiscountCode);
         await _orderingIntegrationEventService.AddAndSaveEventAsync(orderStatusChangedToCancelledIntegrationEvent);
     }
 }

src/Services/Ordering/Ordering.API/Application/DomainEventHandlers/OrderCoupon/OrderStatusChangedToAwaitingCouponValidationDomainEventHandler.cs

@@ -0,0 +1,37 @@
+using Ordering.API.Application.IntegrationEvents.Events;
+using Ordering.Domain.Events;
+
+namespace Ordering.API.Application.DomainEventHandlers.OrderCoupon;
+
+public class OrderStatusChangedToAwaitingCouponValidationDomainEventHandler : INotificationHandler<OrderStatusChangedToAwaitingCouponValidationDomainEvent>
+{
+    private readonly IOrderRepository _orderRepository;
+    private readonly IBuyerRepository _buyerRepository;
+    private readonly ILoggerFactory _logger;
+    private readonly IOrderingIntegrationEventService _orderingIntegrationEventService;
+
+    public OrderStatusChangedToAwaitingCouponValidationDomainEventHandler(
+        IOrderRepository orderRepository,
+        IBuyerRepository buyerRepository,
+        ILoggerFactory logger,
+        IOrderingIntegrationEventService orderingIntegrationEventService)
+    {
+        _orderRepository = orderRepository ?? throw new ArgumentNullException(nameof(orderRepository));
+        _buyerRepository = buyerRepository ?? throw new ArgumentNullException(nameof(buyerRepository));
+        _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+        _orderingIntegrationEventService = orderingIntegrationEventService;
+    }
+
+    public async Task Handle(OrderStatusChangedToAwaitingCouponValidationDomainEvent domainEvent, CancellationToken cancellationToken)
+    {
+        _logger.CreateLogger<OrderStatusChangedToAwaitingCouponValidationDomainEventHandler>()
+            .LogTrace("Order with Id: {OrderId} has been successfully updated to status {Status} ({Id})", domainEvent.OrderId, nameof(OrderStatus.StockConfirmed), OrderStatus.StockConfirmed.Id);
+
+        var order = await _orderRepository.GetAsync(domainEvent.OrderId);
+        var buyer = await _buyerRepository.FindByIdAsync(order.GetBuyerId.Value.ToString());
+
+        var integrationEvent = new OrderStatusChangedToAwaitingCouponValidationIntegrationEvent(order.Id, order.OrderStatus.Name, buyer.Name, order.DiscountCode);
+
+        await _orderingIntegrationEventService.AddAndSaveEventAsync(integrationEvent);
+    }
+}

src/Services/Ordering/Ordering.API/Application/IntegrationEvents/EventHandling/OrderCouponConfirmedIntegrationEventHandler.cs

@@ -0,0 +1,32 @@
+using Ordering.API.Application.Commands;
+using Ordering.API.Application.IntegrationEvents.Events;
+
+namespace Ordering.API.Application.IntegrationEvents.EventHandling;
+
+public class OrderCouponConfirmedIntegrationEventHandler : IIntegrationEventHandler<OrderCouponConfirmedIntegrationEvent>
+{
+    private readonly IMediator _mediator;
+
+    public OrderCouponConfirmedIntegrationEventHandler(IMediator mediator)
+    {
+        _mediator = mediator;
+    }
+
+    public async Task Handle(OrderCouponConfirmedIntegrationEvent @event)
+    {
+        using (LogContext.PushProperty("IntegrationEventContext", $"{@event.Id}-{Program.AppName}"))
+        {
+            Log.Information("----- Handling integration event: {IntegrationEventId} at {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
+
+            var command = new CouponConfirmedCommand(@event.OrderId, @event.Discount);
+
+            Log.Information("----- Sending command: {CommandName} - {IdProperty}: {CommandId} ({@Command})",
+                command.GetGenericTypeName(),
+                nameof(command.OrderNumber),
+                command.OrderNumber,
+                command);
+
+            await _mediator.Send(command);
+        }
+    }
+}

src/Services/Ordering/Ordering.API/Application/IntegrationEvents/EventHandling/OrderCouponRejectedIntegrationEventHandler.cs

@@ -0,0 +1,33 @@
+using Ordering.API.Application.IntegrationEvents.Events;
+
+namespace Ordering.API.Application.IntegrationEvents.EventHandling;
+
+public class OrderCouponRejectedIntegrationEventHandler : IIntegrationEventHandler<OrderCouponRejectedIntegrationEvent>
+{
+    private readonly IMediator _mediator;
+
+    public OrderCouponRejectedIntegrationEventHandler(IMediator mediator)
+    {
+        _mediator = mediator;
+    }
+
+    public async Task Handle(OrderCouponRejectedIntegrationEvent @event)
+    {
+        using (LogContext.PushProperty("IntegrationEventContext", $"{@event.Id}-{Program.AppName}"))
+        {
+            Log.Information("----- Handling integration event: {IntegrationEventId} at {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
+
+            Log.Warning("Discount failed, cancelling order {OrderId}", @event.OrderId);
+
+            var command = new CancelOrderCommand(@event.OrderId);
+
+            Log.Information("----- Sending command: {CommandName} - {IdProperty}: {CommandId} ({@Command})",
+                command.GetGenericTypeName(),
+                nameof(command.OrderNumber),
+                command.OrderNumber,
+                command);
+
+            await _mediator.Send(command);
+        }
+    }
+}

src/Services/Ordering/Ordering.API/Application/IntegrationEvents/EventHandling/UserCheckoutAcceptedIntegrationEventHandler.cs

@@ -1,4 +1,6 @@
-namespace Microsoft.eShopOnContainers.Services.Ordering.API.Application.IntegrationEvents.EventHandling;
+using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Events;
+
+namespace Microsoft.eShopOnContainers.Services.Ordering.API.Application.IntegrationEvents.EventHandling;
 
 public class UserCheckoutAcceptedIntegrationEventHandler : IIntegrationEventHandler<UserCheckoutAcceptedIntegrationEvent>
 {
@@ -34,10 +36,11 @@ public class UserCheckoutAcceptedIntegrationEventHandler : IIntegrationEventHand
             {
                 using (LogContext.PushProperty("IdentifiedCommandId", @event.RequestId))
                 {
-                    var createOrderCommand = new CreateOrderCommand(@event.Basket.Items, @event.UserId, @event.UserName, @event.City, @event.Street,
+                    var createOrderCommand = new CreateOrderCommand(
+                        @event.Basket.Items, @event.UserId, @event.UserName, @event.City, @event.Street,
                         @event.State, @event.Country, @event.ZipCode,
-                        @event.CardNumber, @event.CardHolderName, @event.CardExpiration,
+                    @event.CardNumber, @event.CardHolderName, @event.CardExpiration,
-                        @event.CardSecurityNumber, @event.CardTypeId);
+                    @event.CardSecurityNumber, @event.CardTypeId, @event.CodeDiscount, @event.Discount);
 
                     var requestCreateOrder = new IdentifiedCommand<CreateOrderCommand, bool>(createOrderCommand, @event.RequestId);
 

src/Services/Ordering/Ordering.API/Application/IntegrationEvents/Events/OrderCouponConfirmedIntegrationEvent.cs

@@ -0,0 +1,12 @@
+using Newtonsoft.Json;
+
+namespace Ordering.API.Application.IntegrationEvents.Events;
+
+public record OrderCouponConfirmedIntegrationEvent : IntegrationEvent
+{
+    [JsonProperty]
+    public int OrderId { get; private set; }
+
+    [JsonProperty]
+    public int Discount { get; private set; }
+}

src/Services/Ordering/Ordering.API/Application/IntegrationEvents/Events/OrderCouponRejectedIntegrationEvent.cs

@@ -0,0 +1,12 @@
+using Newtonsoft.Json;
+
+namespace Ordering.API.Application.IntegrationEvents.Events;
+
+public record OrderCouponRejectedIntegrationEvent : IntegrationEvent
+{
+    [JsonProperty]
+    public int OrderId { get; private set; }
+
+    [JsonProperty]
+    public string Code { get; private set; }
+}

src/Services/Ordering/Ordering.API/Application/IntegrationEvents/Events/OrderStatusChangedToAwaitingCouponValidationIntegrationEvent.cs

@@ -0,0 +1,20 @@
+namespace Ordering.API.Application.IntegrationEvents.Events;
+
+public record OrderStatusChangedToAwaitingCouponValidationIntegrationEvent : IntegrationEvent
+{
+    public int OrderId { get; }
+
+    public string OrderStatus { get; }
+
+    public string BuyerName { get; }
+
+    public string Code { get; set; }
+
+    public OrderStatusChangedToAwaitingCouponValidationIntegrationEvent(int orderId, string orderStatus, string buyerName, string code)
+    {
+        OrderId = orderId;
+        OrderStatus = orderStatus;
+        BuyerName = buyerName;
+        Code = code;
+    }
+}

src/Services/Ordering/Ordering.API/Application/IntegrationEvents/Events/OrderStatusChangedToCancelledIntegrationEvent.cs

@@ -5,11 +5,13 @@ public record OrderStatusChangedToCancelledIntegrationEvent : IntegrationEvent
     public int OrderId { get; }
     public string OrderStatus { get; }
     public string BuyerName { get; }
+    public string DiscountCode { get; }
 
-    public OrderStatusChangedToCancelledIntegrationEvent(int orderId, string orderStatus, string buyerName)
+    public OrderStatusChangedToCancelledIntegrationEvent(int orderId, string orderStatus, string buyerName, string discountCode)
     {
         OrderId = orderId;
         OrderStatus = orderStatus;
         BuyerName = buyerName;
+        DiscountCode = discountCode;
     }
 }

src/Services/Ordering/Ordering.API/Application/IntegrationEvents/Events/UserCheckoutAcceptedIntegrationEvent.cs

@@ -32,10 +32,14 @@ public record UserCheckoutAcceptedIntegrationEvent : IntegrationEvent
 
     public CustomerBasket Basket { get; }
 
+    public string CodeDiscount { get; set; }
+
+    public int Discount { get; set; }
+
     public UserCheckoutAcceptedIntegrationEvent(string userId, string userName, string city, string street,
         string state, string country, string zipCode, string cardNumber, string cardHolderName,
         DateTime cardExpiration, string cardSecurityNumber, int cardTypeId, string buyer, Guid requestId,
-        CustomerBasket basket)
+        CustomerBasket basket, string codeDiscount, int discount)
     {
         UserId = userId;
         City = city;
@@ -52,6 +56,8 @@ public record UserCheckoutAcceptedIntegrationEvent : IntegrationEvent
         Basket = basket;
         RequestId = requestId;
         UserName = userName; 
+        CodeDiscount = codeDiscount;
+        Discount = discount;
     }
 
 }

src/Services/Ordering/Ordering.API/Application/Queries/OrderQueries.cs

@@ -21,6 +21,8 @@ public class OrderQueries
                     o.Address_City as city, o.Address_Country as country, o.Address_State as state, o.Address_Street as street, o.Address_ZipCode as zipcode,
                     os.Name as status, 
                     oi.ProductName as productname, oi.Units as units, oi.UnitPrice as unitprice, oi.PictureUrl as pictureurl
+                    o.DiscountCode as coupon
+                    o.Discount as discount,
                     FROM ordering.Orders o
                     LEFT JOIN ordering.Orderitems oi ON o.Id = oi.orderid 
                     LEFT JOIN ordering.orderstatus os on o.OrderStatusId = os.Id
@@ -39,14 +41,27 @@ public class OrderQueries
         using var connection = new SqlConnection(_connectionString);
         connection.Open();
 
-        return await connection.QueryAsync<OrderSummary>(@"SELECT o.[Id] as ordernumber,o.[OrderDate] as [date],os.[Name] as [status], SUM(oi.units*oi.unitprice) as total
+        return await connection.QueryAsync<OrderSummary>(@"
-                    FROM [ordering].[Orders] o
+                    with OrderTotal as (
-                    LEFT JOIN[ordering].[orderitems] oi ON  o.Id = oi.orderid 
+                        select 
-                    LEFT JOIN[ordering].[orderstatus] os on o.OrderStatusId = os.Id                     
+                            OrderId, 
-                    LEFT JOIN[ordering].[buyers] ob on o.BuyerId = ob.Id
+                            sum(Units * UnitPrice) subtotal
-                    WHERE ob.IdentityGuid = @userId
+                        from ordering.orderitems
-                    GROUP BY o.[Id], o.[OrderDate], os.[Name] 
+                        group by OrderId)
-                    ORDER BY o.[Id]", new { userId });
+                    select
+                        o.Id ordernumber,
+                        o.OrderDate date,
+                        os.Name status,
+                        case
+                            when ot.subtotal > isnull(o.Discount, 0) 
+                                then ot.subtotal - isnull(o.Discount, 0)
+                            else 0
+                        end total
+                    from ordering.orders o
+                    join OrderTotal ot on ot.OrderId = o.Id
+                    join ordering.orderstatus os on os.Id = o.OrderStatusId
+                    join ordering.buyers b on b.Id = o.BuyerId", 
+                    new { userId });
     }
 
     public async Task<IEnumerable<CardType>> GetCardTypesAsync()
@@ -70,6 +85,9 @@ public class OrderQueries
             zipcode = result[0].zipcode,
             country = result[0].country,
             orderitems = new List<Orderitem>(),
+            subtotal = 0,
+            coupon = result[0].coupon,
+            discount = result[0].discount ?? 0m,
             total = 0
         };
 
@@ -83,10 +101,14 @@ public class OrderQueries
                 pictureurl = item.pictureurl
             };
 
-            order.total += item.units * item.unitprice;
+            order.subtotal += item.units * item.unitprice;
             order.orderitems.Add(orderitem);
         }
 
+        order.total = order.discount < order.subtotal
+              ? order.subtotal - order.discount
+              : 0;
+
         return order;
     }
 }

src/Services/Ordering/Ordering.API/Application/Queries/OrderViewModel.cs

@@ -19,7 +19,10 @@ public record Order
     public string zipcode { get; init; }
     public string country { get; init; }
     public List<Orderitem> orderitems { get; set; }
+    public decimal subtotal { get; set; }
     public decimal total { get; set; }
+    public string coupon { get; set; }
+    public decimal discount { get; set; }
 }
 
 public record OrderSummary

src/Services/Ordering/Ordering.API/Infrastructure/OrderingContextSeed.cs

@@ -132,6 +132,7 @@ public class OrderingContextSeed
             OrderStatus.Submitted,
             OrderStatus.AwaitingValidation,
             OrderStatus.StockConfirmed,
+            OrderStatus.AwaitingCouponValidation,
             OrderStatus.Paid,
             OrderStatus.Shipped,
             OrderStatus.Cancelled

src/Services/Ordering/Ordering.API/Startup.cs

@@ -1,3 +1,5 @@
+using Ordering.API.Application.IntegrationEvents.Events;
+
 namespace Microsoft.eShopOnContainers.Services.Ordering.API;
 
 public class Startup
@@ -106,6 +108,9 @@ public class Startup
         eventBus.Subscribe<OrderStockRejectedIntegrationEvent, IIntegrationEventHandler<OrderStockRejectedIntegrationEvent>>();
         eventBus.Subscribe<OrderPaymentFailedIntegrationEvent, IIntegrationEventHandler<OrderPaymentFailedIntegrationEvent>>();
         eventBus.Subscribe<OrderPaymentSucceededIntegrationEvent, IIntegrationEventHandler<OrderPaymentSucceededIntegrationEvent>>();
+
+        eventBus.Subscribe<OrderCouponRejectedIntegrationEvent, IIntegrationEventHandler<OrderCouponRejectedIntegrationEvent>>();
+        eventBus.Subscribe<OrderCouponConfirmedIntegrationEvent, IIntegrationEventHandler<OrderCouponConfirmedIntegrationEvent>>();
     }
 
     protected virtual void ConfigureAuth(IApplicationBuilder app)

src/Services/Ordering/Ordering.Domain/AggregatesModel/OrderAggregate/Order.cs

@@ -1,4 +1,5 @@
 using Microsoft.eShopOnContainers.Services.Ordering.Domain.Events;
+using Ordering.Domain.Events;
 
 namespace Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.OrderAggregate;
 
@@ -17,10 +18,16 @@ public class Order
     private int? _buyerId;
 
     public OrderStatus OrderStatus { get; private set; }
+
+    public bool? DiscountConfirmed { get; private set; }
+
     private int _orderStatusId;
 
     private string _description;
 
+    public string DiscountCode { get; private set; }
+
+    public decimal? Discount { get; private set; }
 
 
     // Draft orders have this set to true. Currently we don't check anywhere the draft status of an Order, but we could do it if needed
@@ -49,13 +56,15 @@ public class Order
     }
 
     public Order(string userId, string userName, Address address, int cardTypeId, string cardNumber, string cardSecurityNumber,
-            string cardHolderName, DateTime cardExpiration, int? buyerId = null, int? paymentMethodId = null) : this()
+            string cardHolderName, DateTime cardExpiration, string discountCode, decimal? discount, int? buyerId = null, int? paymentMethodId = null) : this()
     {
         _buyerId = buyerId;
         _paymentMethodId = paymentMethodId;
         _orderStatusId = OrderStatus.Submitted.Id;
         _orderDate = DateTime.UtcNow;
         Address = address;
+        DiscountCode = discountCode;
+        Discount = discountCode == null ? null : discount;
 
         // Add the OrderStarterDomainEvent to the domain events collection 
         // to be raised/dispatched when comitting changes into the Database [ After DbContext.SaveChanges() ]
@@ -113,13 +122,44 @@ public class Order
 
     public void SetStockConfirmedStatus()
     {
-        if (_orderStatusId == OrderStatus.AwaitingValidation.Id)
+        // If there's no Couponm, then it's validated
+        if (DiscountCode == null)
         {
-            AddDomainEvent(new OrderStatusChangedToStockConfirmedDomainEvent(Id));
+            if (_orderStatusId == OrderStatus.AwaitingValidation.Id)
+            {
+                AddDomainEvent(new OrderStatusChangedToStockConfirmedDomainEvent(Id));
 
-            _orderStatusId = OrderStatus.StockConfirmed.Id;
+                _orderStatusId = OrderStatus.StockConfirmed.Id;
-            _description = "All the items were confirmed with available stock.";
+                _description = "All the items were confirmed with available stock.";
+            }
         }
+        else
+        {
+            if (_orderStatusId != OrderStatus.AwaitingValidation.Id)
+            {
+                StatusChangeException(OrderStatus.AwaitingCouponValidation);
+            }
+
+            _orderStatusId = OrderStatus.AwaitingCouponValidation.Id;
+            _description = "Validate discount code";
+
+            AddDomainEvent(new OrderStatusChangedToAwaitingCouponValidationDomainEvent(Id, DiscountCode));
+        }
+    }
+
+    public void ProcessCouponConfirmed()
+    {
+        if (_orderStatusId != OrderStatus.AwaitingCouponValidation.Id)
+        {
+            StatusChangeException(OrderStatus.StockConfirmed);
+        }
+
+        DiscountConfirmed = true;
+
+        _orderStatusId = OrderStatus.StockConfirmed.Id;
+        _description = "Discount coupon validated.";
+
+        AddDomainEvent(new OrderStatusChangedToStockConfirmedDomainEvent(Id));
     }
 
     public void SetPaidStatus()
@@ -190,6 +230,8 @@ public class Order
 
     public decimal GetTotal()
     {
-        return _orderItems.Sum(o => o.GetUnits() * o.GetUnitPrice());
+        var result = _orderItems.Sum(o => o.GetUnits() * o.GetUnitPrice()) - (Discount ?? 0);
+
+        return result < 0 ? 0 : result;
     }
 }

src/Services/Ordering/Ordering.Domain/AggregatesModel/OrderAggregate/OrderStatus.cs

@@ -7,10 +7,11 @@ public class OrderStatus
 {
     public static OrderStatus Submitted = new OrderStatus(1, nameof(Submitted).ToLowerInvariant());
     public static OrderStatus AwaitingValidation = new OrderStatus(2, nameof(AwaitingValidation).ToLowerInvariant());
-    public static OrderStatus StockConfirmed = new OrderStatus(3, nameof(StockConfirmed).ToLowerInvariant());
+    public static OrderStatus AwaitingCouponValidation = new OrderStatus(3, nameof(AwaitingCouponValidation).ToLowerInvariant());
-    public static OrderStatus Paid = new OrderStatus(4, nameof(Paid).ToLowerInvariant());
+    public static OrderStatus StockConfirmed = new OrderStatus(4, nameof(StockConfirmed).ToLowerInvariant());
-    public static OrderStatus Shipped = new OrderStatus(5, nameof(Shipped).ToLowerInvariant());
+    public static OrderStatus Paid = new OrderStatus(5, nameof(Paid).ToLowerInvariant());
-    public static OrderStatus Cancelled = new OrderStatus(6, nameof(Cancelled).ToLowerInvariant());
+    public static OrderStatus Shipped = new OrderStatus(6, nameof(Shipped).ToLowerInvariant());
+    public static OrderStatus Cancelled = new OrderStatus(7, nameof(Cancelled).ToLowerInvariant());
 
     public OrderStatus(int id, string name)
         : base(id, name)
@@ -18,7 +19,7 @@ public class OrderStatus
     }
 
     public static IEnumerable<OrderStatus> List() =>
-        new[] { Submitted, AwaitingValidation, StockConfirmed, Paid, Shipped, Cancelled };
+        new[] { Submitted, AwaitingValidation, StockConfirmed, AwaitingCouponValidation, Paid, Shipped, Cancelled };
 
     public static OrderStatus FromName(string name)
     {

src/Services/Ordering/Ordering.Domain/Events/OrderStatusChangedToAwaitingCouponValidationDomainEvent.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Ordering.Domain.Events;
+public class OrderStatusChangedToAwaitingCouponValidationDomainEvent : INotification
+{
+    public int OrderId { get; }
+
+    public string Code { get; set; }
+
+    public OrderStatusChangedToAwaitingCouponValidationDomainEvent(int orderId, string code)
+    {
+        OrderId = orderId;
+        Code = code;
+    }
+}

src/Services/Ordering/Ordering.Infrastructure/EntityConfigurations/OrderEntityTypeConfiguration.cs

@@ -51,6 +51,10 @@ class OrderEntityTypeConfiguration : IEntityTypeConfiguration<Order>
 
         orderConfiguration.Property<string>("Description").IsRequired(false);
 
+        orderConfiguration
+         .Property(e => e.DiscountCode)
+         .HasMaxLength(50);
+
         var navigation = orderConfiguration.Metadata.FindNavigation(nameof(Order.OrderItems));
 
         // DDD Patterns comment:

src/Services/Ordering/Ordering.SignalrHub/IntegrationEvents/EventHandling/OrderStatusChangedToAwaitingCouponValidationIntegrationEventHandler.cs

@@ -0,0 +1,30 @@
+using Ordering.SignalrHub.IntegrationEvents.Events;
+
+namespace Ordering.SignalrHub.IntegrationEvents.EventHandling;
+
+public class OrderStatusChangedToAwaitingCouponValidationIntegrationEventHandler : IIntegrationEventHandler<OrderStatusChangedToAwaitingCouponValidationIntegrationEvent>
+{
+    private readonly IHubContext<NotificationsHub> _hubContext;
+    private readonly ILogger<OrderStatusChangedToAwaitingCouponValidationIntegrationEventHandler> _logger;
+
+    public OrderStatusChangedToAwaitingCouponValidationIntegrationEventHandler(
+        IHubContext<NotificationsHub> hubContext,
+        ILogger<OrderStatusChangedToAwaitingCouponValidationIntegrationEventHandler> logger)
+    {
+        _hubContext = hubContext ?? throw new ArgumentNullException(nameof(hubContext));
+        _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+    }
+
+
+    public async Task Handle(OrderStatusChangedToAwaitingCouponValidationIntegrationEvent @event)
+    {
+        using (LogContext.PushProperty("IntegrationEventContext", $"{@event.Id}-{Program.AppName}"))
+        {
+            _logger.LogInformation("----- Handling integration event: {IntegrationEventId} at {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
+
+            await _hubContext.Clients
+                .Group(@event.BuyerName)
+                .SendAsync("UpdatedOrderState", new { OrderId = @event.OrderId, Status = @event.OrderStatus });
+        }
+    }
+}

src/Services/Ordering/Ordering.SignalrHub/IntegrationEvents/Events/OrderStatusChangedToAwaitingCouponValidationIntegrationEvent.cs

@@ -0,0 +1,17 @@
+using Newtonsoft.Json;
+
+namespace Ordering.SignalrHub.IntegrationEvents.Events;
+public record OrderStatusChangedToAwaitingCouponValidationIntegrationEvent : IntegrationEvent
+{
+    [JsonProperty]
+    public int OrderId { get; private set; }
+
+    [JsonProperty]
+    public string OrderStatus { get; private set; }
+
+    [JsonProperty]
+    public string BuyerName { get; private set; }
+
+    [JsonProperty]
+    public string Code { get; private set; }
+}

src/Services/Ordering/Ordering.SignalrHub/Startup.cs

@@ -1,3 +1,6 @@
+using Ordering.SignalrHub.IntegrationEvents.EventHandling;
+using Ordering.SignalrHub.IntegrationEvents.Events;
+
 namespace Microsoft.eShopOnContainers.Services.Ordering.SignalrHub;
 
 public class Startup
@@ -142,6 +145,7 @@ public class Startup
         eventBus.Subscribe<OrderStatusChangedToShippedIntegrationEvent, OrderStatusChangedToShippedIntegrationEventHandler>();
         eventBus.Subscribe<OrderStatusChangedToCancelledIntegrationEvent, OrderStatusChangedToCancelledIntegrationEventHandler>();
         eventBus.Subscribe<OrderStatusChangedToSubmittedIntegrationEvent, OrderStatusChangedToSubmittedIntegrationEventHandler>();
+        eventBus.Subscribe<OrderStatusChangedToAwaitingCouponValidationIntegrationEvent, OrderStatusChangedToAwaitingCouponValidationIntegrationEventHandler>();
     }
 
     private void ConfigureAuthService(IServiceCollection services)

src/Services/Ordering/Ordering.UnitTests/Application/IdentifiedCommandHandlerTest.cs

@@ -74,6 +74,8 @@ public class IdentifiedCommandHandlerTest
             cardExpiration: args != null && args.ContainsKey("cardExpiration") ? (DateTime)args["cardExpiration"] : DateTime.MinValue,
             cardSecurityNumber: args != null && args.ContainsKey("cardSecurityNumber") ? (string)args["cardSecurityNumber"] : "123",
             cardHolderName: args != null && args.ContainsKey("cardHolderName") ? (string)args["cardHolderName"] : "XXX",
-            cardTypeId: args != null && args.ContainsKey("cardTypeId") ? (int)args["cardTypeId"] : 0);
+            cardTypeId: args != null && args.ContainsKey("cardTypeId") ? (int)args["cardTypeId"] : 0,
+            codeDiscount: args != null && args.ContainsKey("codeDiscount") ? (string)args["codeDiscount"] : "",
+            discount: args != null && args.ContainsKey("discount") ? (int)args["discount"] : 0);
     }
 }

src/Services/Ordering/Ordering.UnitTests/Application/NewOrderCommandHandlerTest.cs

@@ -60,7 +60,7 @@ public class NewOrderRequestHandlerTest
 
     private Order FakeOrder()
     {
-        return new Order("1", "fakeName", new Address("street", "city", "state", "country", "zipcode"), 1, "12", "111", "fakeName", DateTime.Now.AddYears(1));
+        return new Order("1", "fakeName", new Address("street", "city", "state", "country", "zipcode"), 1, "12", "111", "fakeName", DateTime.Now.AddYears(1), "", 0);
     }
 
     private CreateOrderCommand FakeOrderRequestWithBuyer(Dictionary<string, object> args = null)
@@ -78,6 +78,8 @@ public class NewOrderRequestHandlerTest
             cardExpiration: args != null && args.ContainsKey("cardExpiration") ? (DateTime)args["cardExpiration"] : DateTime.MinValue,
             cardSecurityNumber: args != null && args.ContainsKey("cardSecurityNumber") ? (string)args["cardSecurityNumber"] : "123",
             cardHolderName: args != null && args.ContainsKey("cardHolderName") ? (string)args["cardHolderName"] : "XXX",
-            cardTypeId: args != null && args.ContainsKey("cardTypeId") ? (int)args["cardTypeId"] : 0);
+            cardTypeId: args != null && args.ContainsKey("cardTypeId") ? (int)args["cardTypeId"] : 0,
+            codeDiscount: args != null && args.ContainsKey("codeDiscount") ? (string)args["codeDiscount"] : "",
+            discount: args != null && args.ContainsKey("discount") ? (int)args["discount"] : 0);
     }
 }

src/Services/Ordering/Ordering.UnitTests/Builders.cs

@@ -24,7 +24,9 @@ public class OrderBuilder
             cardNumber: "12",
             cardSecurityNumber: "123",
             cardHolderName: "name",
-            cardExpiration: DateTime.UtcNow);
+            cardExpiration: DateTime.UtcNow,
+            "",
+            0);
     }
 
     public OrderBuilder AddOne(

src/Services/Ordering/Ordering.UnitTests/Domain/OrderAggregateTest.cs

@@ -119,7 +119,7 @@ public class OrderAggregateTest
         var expectedResult = 1;
 
         //Act 
-        var fakeOrder = new Order("1", "fakeName", new Address(street, city, state, country, zipcode), cardTypeId, cardNumber, cardSecurityNumber, cardHolderName, cardExpiration);
+        var fakeOrder = new Order("1", "fakeName", new Address(street, city, state, country, zipcode), cardTypeId, cardNumber, cardSecurityNumber, cardHolderName, cardExpiration, "", 0);
 
         //Assert
         Assert.Equal(fakeOrder.DomainEvents.Count, expectedResult);
@@ -142,7 +142,7 @@ public class OrderAggregateTest
         var expectedResult = 2;
 
         //Act 
-        var fakeOrder = new Order("1", "fakeName", new Address(street, city, state, country, zipcode), cardTypeId, cardNumber, cardSecurityNumber, cardHolderName, cardExpiration);
+        var fakeOrder = new Order("1", "fakeName", new Address(street, city, state, country, zipcode), cardTypeId, cardNumber, cardSecurityNumber, cardHolderName, cardExpiration, "", 0);
         fakeOrder.AddDomainEvent(new OrderStartedDomainEvent(fakeOrder, "fakeName", "1", cardTypeId, cardNumber, cardSecurityNumber, cardHolderName, cardExpiration));
         //Assert
         Assert.Equal(fakeOrder.DomainEvents.Count, expectedResult);
@@ -162,7 +162,7 @@ public class OrderAggregateTest
         var cardSecurityNumber = "123";
         var cardHolderName = "FakeName";
         var cardExpiration = DateTime.Now.AddYears(1);
-        var fakeOrder = new Order("1", "fakeName", new Address(street, city, state, country, zipcode), cardTypeId, cardNumber, cardSecurityNumber, cardHolderName, cardExpiration);
+        var fakeOrder = new Order("1", "fakeName", new Address(street, city, state, country, zipcode), cardTypeId, cardNumber, cardSecurityNumber, cardHolderName, cardExpiration, "", 0);
         var @fakeEvent = new OrderStartedDomainEvent(fakeOrder, "1", "fakeName", cardTypeId, cardNumber, cardSecurityNumber, cardHolderName, cardExpiration);
         var expectedResult = 1;