Enable conversion of existing Swift reviews and disable conversion of… (#9695)

* Enable conversion of existing Swift reviews and disable conversion of TypeSpec

Author: praveenkuttappan

src/dotnet/APIView/APIViewWeb/Languages/SwiftLanguageService.cs

@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft Corporation. All rights reserved.
+// Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT License.
 
 using Microsoft.Extensions.Configuration;
@@ -8,6 +8,7 @@ namespace APIViewWeb
     public class SwiftLanguageService : JsonLanguageService
     {
         public override string Name { get; } = "Swift";
+        public string VersionString { get; } = "0.3.0";
 
         //Swift doesn't have any parser for now
         //It will upload a json file with name Swift so Swift reviews are listed under that filter type
@@ -19,8 +20,18 @@ public SwiftLanguageService(IConfiguration configuration)
         public override bool IsSupportedFile(string name)
         {
             // Skip initial processing so this service won't be selected for LLC when json is uploaded
-            // This is only a temporary solution for POC and will be remvoed once autorest yaml is uploaded instead of json for LLC
+            // This is only a temporary solution for POC and will be removed once autorest yaml is uploaded instead of json for LLC
             return false;
         }
+
+        public override bool CanUpdate(string versionString)
+        {
+            return false;
+        }
+
+        public override bool CanConvert(string versionString)
+        {
+            return versionString != VersionString;
+        }
     }
-}
+}

src/dotnet/APIView/APIViewWeb/Languages/TypeSpecLanguageService.cs

@@ -46,7 +46,7 @@ public override bool CanUpdate(string versionString)
 
         public override bool CanConvert(string versionString)
         {
-            return versionString != VersionString;
+            return false;
         }
 
         public override bool GeneratePipelineRunParams(APIRevisionGenerationPipelineParamModel param)