Update original file path value in detect change request to APIView (Azure#39924)

Co-authored-by: Praveen Kuttappan <[email protected]>

Author: azure-sdk

eng/common/scripts/Detect-Api-Changes.ps1

@@ -40,9 +40,18 @@ function Submit-Request($filePath, $packageName)
     $query.Add('language', $LanguageShort)
     $query.Add('project', $DevopsProject)
     $reviewFileFullName = Join-Path -Path $ArtifactPath $packageName $reviewFileName
+    # If CI generates token file then it passes both token file name and original file (filePath) to APIView
+    # If both files are passed then APIView downloads the parent directory as a zip
+    # If code file is not passed(for e.g. .NET or Java) then APIView needs full path to original file to download only that file.
     if (Test-Path $reviewFileFullName)
     {
         $query.Add('codeFile', $reviewFileName)
+        # Pass only relative path in package artifact directory when code file is also present
+        $query.Add('filePath', (Split-Path -Leaf $filePath))
+    }
+    else
+    {
+        $query.Add('filePath', $filePath)
     }
     $uri = [System.UriBuilder]$APIViewUri
     $uri.query = $query.toString()