Update V2 logic for count property (#1380)

Author: anamnavi

src/code/RepositorySettings.cs

@@ -812,7 +812,7 @@ private static XDocument LoadXDocument(string filePath)
 
         private static PSRepositoryInfo.APIVersion GetRepoAPIVersion(Uri repoUri)
         {
-            if (repoUri.AbsoluteUri.EndsWith("api/v2", StringComparison.OrdinalIgnoreCase))
+            if (repoUri.AbsoluteUri.EndsWith("/v2", StringComparison.OrdinalIgnoreCase))
             {
                 // Scenario: V2 server protocol repositories (i.e PSGallery)
                 return PSRepositoryInfo.APIVersion.v2;

src/code/V2ServerAPICalls.cs

@@ -1135,6 +1135,42 @@ public int GetCountFromResponse(string httpResponse, out ErrorRecord errRecord)
             try
             {
                 doc.LoadXml(httpResponse);
+
+                bool countSearchSucceeded = false;
+                XmlNodeList elemList = doc.GetElementsByTagName("m:count");
+                if (elemList.Count > 0)
+                {
+                    countSearchSucceeded = true;
+                    XmlNode node = elemList[0];
+                    if (node == null || String.IsNullOrWhiteSpace(node.InnerText))
+                    {
+                        countSearchSucceeded = false;
+                        errRecord = new ErrorRecord(
+                            new PSArgumentException("Count property from server response was empty, invalid or not present."),
+                            "GetCountFromResponseFailure",
+                            ErrorCategory.InvalidData,
+                            this);
+                    }
+                    else
+                    {
+                        countSearchSucceeded = int.TryParse(node.InnerText, out count);
+                    }
+                }
+   
+                if (!countSearchSucceeded)
+                {
+                             // Note: not all V2 servers may have the 'count' property implemented or valid (i.e CloudSmith server), in this case try to get 'd:Id' property.
+                    elemList = doc.GetElementsByTagName("d:Id");
+                    if (elemList.Count > 0)
+                    {
+                        count = elemList.Count;
+                        errRecord = null;
+                    }
+                    else
+                    {
+                        _cmdletPassedIn.WriteDebug($"Property 'count' and 'd:Id' could not be found in response. This may indicate that the package could not be found"); 
+                    }
+                }
             }
             catch (XmlException e)
             {
@@ -1144,17 +1180,6 @@ public int GetCountFromResponse(string httpResponse, out ErrorRecord errRecord)
                     ErrorCategory.InvalidData, 
                     this);
             }
-            if (errRecord != null)
-            {
-                return count;
-            }
-
-            XmlNodeList elemList = doc.GetElementsByTagName("m:count");
-            if (elemList.Count > 0)
-            {
-                XmlNode node = elemList[0];
-                count = int.Parse(node.InnerText);
-            }
 
             return count;
         }