refactor: use tuple match for token/scope handling

core/src/services/gcs/core.rs

@@ -79,17 +79,18 @@ static BACKOFF: Lazy<ExponentialBuilder> =
 
 impl GcsCore {
     async fn load_token(&self) -> Result<Option<GoogleToken>> {
-        if let Some(token) = &self.token {
-            if let Some(scope) = &self.scope {
-                return Ok(Some(GoogleToken::new(token, usize::MAX, scope)));
-            } else {
+        match (&self.token, &self.scope) {
+            (Some(token), Some(scope)) => {
+                return Ok(Some(GoogleToken::new(token, usize::MAX, scope)))
+            }
+            (Some(_), None) => {
                 return Err(Error::new(
                     ErrorKind::ConfigInvalid,
                     "Scope is required when token is set",
-                ));
+                ))
             }
+            _ => {}
         }
-
         let cred = { || self.token_loader.load() }
             .retry(&*BACKOFF)
             .await