Merge pull request #30 from Bubuni-Team/patch/rss_relative_uri

Fix URL building for feeds with relative URLs

modules/RichSiteSummary/Data/Post.cs

@@ -30,7 +30,7 @@ namespace Kruzya.TelegramBot.RichSiteSummary.Data
 
         protected override string ViewableUrl
         {
-            get => UtmUtility.ApplyParameters(Url, new UtmParameters()
+            get => UtmUtility.ApplyParameters(new Uri(new(Feed.Url), Url), new UtmParameters()
             {
                 Source = "telegram",
                 Type = "rss_post",

modules/RichSiteSummary/UrchinTrackingModule/UtmUtility.cs

@@ -9,16 +9,18 @@ namespace Kruzya.TelegramBot.RichSiteSummary.UrchinTrackingModule
     public class UtmUtility
     {
         public static string ApplyParameters(string url, UtmParameters parameters)
+            => ApplyParameters(new Uri(url), parameters);
+
+        public static string ApplyParameters(Uri uri, UtmParameters parameters)
         {
-            var uri = new Uri(url);
             var query = HttpUtility.ParseQueryString(uri.Query);
-            
+
             SetIfNotNull(query, "utm_source", parameters.Source);
             SetIfNotNull(query, "utm_medium", parameters.Type);
             SetIfNotNull(query, "utm_campaign", parameters.Campaign);
             SetIfNotNull(query, "utm_term", parameters.Term);
             SetIfNotNull(query, "utm_content", parameters.Content);
-            
+
             var uriBuilder = new UriBuilder(uri);
             uriBuilder.Query = BuildQueryString(query);
             return uriBuilder.ToString();