Minor refactoring related to the ProductPriceChanged integration event

src/Services/Basket/Basket.API/Events/CatalogPriceChangedHandler.cs

@@ -22,13 +22,13 @@ namespace Basket.API.Events
             foreach (var id in userIds)
             {
                 var basket = await _repository.GetBasket(id);
-                await UpdateBasket(@event.ItemId, @event.NewPrice, basket);
+                await UpdateBasket(@event.ProductId, @event.NewPrice, basket);
             }
         }
 
-        private async Task UpdateBasket(int itemId, decimal newPrice, CustomerBasket basket)
+        private async Task UpdateBasket(int productId, decimal newPrice, CustomerBasket basket)
         {
-            var itemsToUpdate = basket?.Items?.Where(x => int.Parse(x.ProductId) == itemId).ToList();
+            var itemsToUpdate = basket?.Items?.Where(x => int.Parse(x.ProductId) == productId).ToList();
             if (itemsToUpdate != null)
             {
                 foreach (var item in itemsToUpdate)

src/Services/Common/Infrastructure/Catalog/ProductPriceChanged.cs

@@ -6,15 +6,15 @@ namespace Microsoft.eShopOnContainers.Services.Common.Infrastructure.Catalog
 {
     public class ProductPriceChanged : IntegrationEventBase
     {        
-        public int ItemId { get; private set; }
+        public int ProductId { get; private set; }
 
         public decimal NewPrice { get; private set; }
 
-        public decimal OldPrice { get; set; }
+        public decimal OldPrice { get; private set; }
 
-        public ProductPriceChanged(int itemId, decimal newPrice, decimal oldPrice)
+        public ProductPriceChanged(int productId, decimal newPrice, decimal oldPrice)
         {
-            ItemId = itemId;
+            ProductId = productId;
             NewPrice = newPrice;
             OldPrice = oldPrice;
         }