Match price formatting with google merchant center documentation (#8)

* Match price formatting with google merchant center documentation

* Added missing using statement for Core.Services

Author: BenWhite27

src/Umbraco.Commerce.ProductFeeds.Core/Features/FeedGenerators/Implementations/GoogleMerchantCenterFeedService.cs

@@ -4,6 +4,7 @@
 using Umbraco.Commerce.Cms.Models;
 using Umbraco.Commerce.Core.Api;
 using Umbraco.Commerce.Core.Models;
+using Umbraco.Commerce.Core.Services;
 using Umbraco.Commerce.Extensions;
 using Umbraco.Commerce.ProductFeeds.Core.Features.FeedGenerators.Implementations;
 using Umbraco.Commerce.ProductFeeds.Core.Features.FeedSettings.Application;
@@ -25,19 +26,22 @@ public class GoogleMerchantCenterFeedService : IProductFeedGeneratorService
             "Unable to find any product with these parameters: storeId = '{StoreId}', product key= '{ProductKey}', variant key = '{VariantKey}'.");
 
         private readonly ILogger<GoogleMerchantCenterFeedService> _logger;
-        private readonly IProductQueryService _productQueryService;
+        private readonly ICurrencyService _currencyService;
+        private readonly IProductQueryService _productQueryService;        
         private readonly IUmbracoCommerceApi _commerceApi;
         private readonly ISingleValuePropertyExtractorFactory _singleValuePropertyExtractorFactory;
         private readonly IMultipleValuePropertyExtractorFactory _multipleValuePropertyExtractorFactory;
 
         public GoogleMerchantCenterFeedService(
             ILogger<GoogleMerchantCenterFeedService> logger,
+            ICurrencyService currencyService,
             IProductQueryService productQueryService,
             IUmbracoCommerceApi commerceApi,
             ISingleValuePropertyExtractorFactory singleValuePropertyExtractor,
             IMultipleValuePropertyExtractorFactory multipleValuePropertyExtractorFactory)
         {
             _logger = logger;
+            _currencyService = currencyService;
             _productQueryService = productQueryService;
             _commerceApi = commerceApi;
             _singleValuePropertyExtractorFactory = singleValuePropertyExtractor;
@@ -192,7 +196,8 @@ private void AddPriceNode(XmlElement itemNode, Guid storeId, IPublishedElement p
             }
 
             XmlElement priceNode = itemNode.OwnerDocument.CreateElement("g:price", GoogleXmlNamespaceUri);
-            priceNode.InnerText = productSnapshot.CalculatePrice()?.Formatted();
+            Price calculatedPrice = productSnapshot.CalculatePrice();
+            priceNode.InnerText = $"{calculatedPrice.WithTax.ToString("0.00")} {_currencyService.GetCurrency(calculatedPrice.CurrencyId).Code}";
             itemNode.AppendChild(priceNode);
         }