Add ConfirmOrderStockIntegrationEvent implementation

Author: christian147

src/Services/Catalog/Catalog.API/IntegrationEvents/EventHandling/ConfirmOrderStockIntegrationEventHandler.cs

@@ -1,4 +1,8 @@
-using Catalog.API.IntegrationEvents;
+using System.Collections.Generic;
+using System.Linq;
+using Catalog.API.Infrastructure.Exceptions;
+using Catalog.API.IntegrationEvents;
+using Microsoft.eShopOnContainers.Services.Catalog.API.Model;
 
 namespace Microsoft.eShopOnContainers.Services.Catalog.API.IntegrationEvents.EventHandling
 {
@@ -23,11 +27,34 @@ public ConfirmOrderStockIntegrationEventHandler(CatalogContext catalogContext,
 
         public async Task Handle(ConfirmOrderStockIntegrationEvent @event)
         {
-            IntegrationEvent integrationEvent = new OrderStockConfirmedIntegrationEvent(@event.OrderId);
+            var confirmedOrderStockItems = new List<ConfirmedOrderStockItem>();
 
-            //TODO: Check the stock products units
+            foreach (var orderStockItem in @event.OrderStockItems)
+            {
+                var catalogItem = _catalogContext.CatalogItems.Find(orderStockItem.ProductId);
+                CheckValidcatalogItemId(catalogItem);
 
+                var confirmedOrderStockItem = new ConfirmedOrderStockItem(catalogItem.Id, 
+                    catalogItem.AvailableStock >= orderStockItem.Units);
+
+                confirmedOrderStockItems.Add(confirmedOrderStockItem);
+            }
+
+            //Create Integration Event to be published through the Event Bus
+            var integrationEvent = confirmedOrderStockItems.Any(c => !c.Confirmed)
+                ? (IntegrationEvent) new OrderStockNotConfirmedIntegrationEvent(@event.OrderId, confirmedOrderStockItems)
+                : new OrderStockConfirmedIntegrationEvent(@event.OrderId);
+          
+            // Publish through the Event Bus and mark the saved event as published
             await _catalogIntegrationEventService.PublishThroughEventBusAsync(integrationEvent);
         }
+
+        private void CheckValidcatalogItemId(CatalogItem catalogItem)
+        {
+            if (catalogItem is null)
+            {
+                throw new CatalogDomainException("Not able to process catalog event. Reason: no valid catalogItemId");
+            }
+        }
     }
 }

src/Services/Catalog/Catalog.API/IntegrationEvents/Events/ConfirmOrderStockIntegrationEvent.cs

@@ -6,13 +6,13 @@
     public class ConfirmOrderStockIntegrationEvent : IntegrationEvent
     {
         public int OrderId { get; }
-        public IEnumerable<OrderStockItem> OrderStockItem { get; }
+        public IEnumerable<OrderStockItem> OrderStockItems { get; }
 
         public ConfirmOrderStockIntegrationEvent(int orderId,
-            IEnumerable<OrderStockItem> orderStockItem)
+            IEnumerable<OrderStockItem> orderStockItems)
         {
             OrderId = orderId;
-            OrderStockItem = orderStockItem;
+            OrderStockItems = orderStockItems;
         }
     }
 

src/Services/Catalog/Catalog.API/IntegrationEvents/Events/OrderStockNotConfirmedIntegrationEvent.cs

@@ -1,8 +1,7 @@
-using System.Collections.Generic;
-
-namespace Microsoft.eShopOnContainers.Services.Catalog.API.IntegrationEvents.Events
+namespace Microsoft.eShopOnContainers.Services.Catalog.API.IntegrationEvents.Events
 {
     using BuildingBlocks.EventBus.Events;
+    using System.Collections.Generic;
 
     public class OrderStockNotConfirmedIntegrationEvent : IntegrationEvent
     {
@@ -16,19 +15,17 @@ public OrderStockNotConfirmedIntegrationEvent(int orderId,
             OrderId = orderId;
             OrderStockItem = orderStockItem;
         }
+    }
 
-        public class ConfirmedOrderStockItem
-        {
-            public int ProductId { get; }
-            public int Units { get; }
-            public bool Confirmed { get; }
+    public class ConfirmedOrderStockItem
+    {
+        public int ProductId { get; }
+        public bool Confirmed { get; }
 
-            public ConfirmedOrderStockItem(int productId, int units, bool confirmed)
-            {
-                ProductId = productId;
-                Units = units;
-                Confirmed = confirmed;
-            }
+        public ConfirmedOrderStockItem(int productId, bool confirmed)
+        {
+            ProductId = productId;
+            Confirmed = confirmed;
         }
     }
 }

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

@@ -9,6 +9,9 @@ public class OrderStockConfirmedIntegrationEventHandler : IIntegrationEventHandl
     {
         public async Task Handle(OrderStockConfirmedIntegrationEvent @event)
         {
+            //TODO: 1) Updates the state to "StockValidated" and any meaningful OrderContextDescription message saying that all the items were confirmed with available stock, etc
+            //TODO: 2) Sends a Command-message (PayOrderCommand msg/bus) to the Payment svc. from Ordering micro (thru Command Bus, as a message, NOT http)
+
             throw new NotImplementedException();
         }
     }

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

@@ -9,6 +9,9 @@ public class OrderStockNotConfirmedIntegrationEventHandler : IIntegrationEventHa
     {
         public async Task Handle(OrderStockNotConfirmedIntegrationEvent @event)
         {
+            //TODO: must update the order state to cancelled and the CurrentOrderStateContextDescription with the reasons of no-stock confirm 
+            //TODO: for this/that articles which is info coming in that integration event. --> ORDER PROCESS 
+
             throw new NotImplementedException();
         }
     }

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

@@ -1,16 +1,32 @@
-namespace Ordering.API.Application.IntegrationEvents.Events
+using System.Collections.Generic;
+
+namespace Ordering.API.Application.IntegrationEvents.Events
 {
     using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Events;
 
     public class OrderStockNotConfirmedIntegrationEvent : IntegrationEvent
     {
         public int OrderId { get; }
 
-        //public IEnumerable<Item> { get; }
+        public IEnumerable<ConfirmedOrderStockItem> OrderStockItem { get; }
 
-        public OrderStockNotConfirmedIntegrationEvent(int orderId)
+        public OrderStockNotConfirmedIntegrationEvent(int orderId,
+            IEnumerable<ConfirmedOrderStockItem> orderStockItem)
         {
             OrderId = orderId;
+            OrderStockItem = orderStockItem;
+        }
+    }
+
+    public class ConfirmedOrderStockItem
+    {
+        public int ProductId { get; }
+        public bool Confirmed { get; }
+
+        public ConfirmedOrderStockItem(int productId, bool confirmed)
+        {
+            ProductId = productId;
+            Confirmed = confirmed;
         }
     }
 }

src/Services/Ordering/Ordering.API/Ordering.API.csproj

@@ -79,6 +79,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <Folder Include="Application\DomainEventHandlers\OrderStockMethodVerified\" />
     <Folder Include="Application\IntegrationCommands\CommandHandlers\" />
     <Folder Include="Infrastructure\IntegrationEventMigrations\" />
   </ItemGroup>