Get token with client (#1385)

Co-authored-by: fivebanger <[email protected]>

CHANGELOG.md

@@ -22,6 +22,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- [core] Add `get_token_with_client_id()` to get a token for a specific client ID
 - [core] Add `login` (mobile) and `auth_token` retrieval via login5
 - [core] Add `OS` and `os_version` to `config.rs`
 - [discovery] Added a new MDNS/DNS-SD backend which connects to Avahi via D-Bus.

core/src/token.rs

@@ -58,9 +58,20 @@ impl TokenProvider {
         })
     }
 
+    // Not all combinations of scopes and client ID are allowed.
+    // Depending on the client ID currently used, the function may return an error for specific scopes.
+    // In this case get_token_with_client_id() can be used, where an appropriate client ID can be provided.
     // scopes must be comma-separated
     pub async fn get_token(&self, scopes: &str) -> Result<Token, Error> {
         let client_id = self.session().client_id();
+        self.get_token_with_client_id(scopes, &client_id).await
+    }
+
+    pub async fn get_token_with_client_id(
+        &self,
+        scopes: &str,
+        client_id: &str,
+    ) -> Result<Token, Error> {
         if client_id.is_empty() {
             return Err(Error::invalid_argument("Client ID cannot be empty"));
         }