Fix auth token not being set properly

src/auth_code.rs

@@ -101,6 +101,10 @@ impl OAuthClient for AuthCodeSpotify {
         &self.oauth
     }
 
+    fn set_token(&mut self, token: Option<Token>) {
+        self.token = token;
+    }
+
     /// Obtains a user access token given a code, as part of the OAuth
     /// authentication. The access token will be saved internally.
     async fn request_token(&mut self, code: &str) -> ClientResult<()> {

src/auth_code_pkce.rs

@@ -64,6 +64,10 @@ impl OAuthClient for AuthCodePkceSpotify {
         &self.oauth
     }
 
+    fn set_token(&mut self, token: Option<Token>) {
+        self.token = token;
+    }
+
     async fn request_token(&mut self, code: &str) -> ClientResult<()> {
         // TODO
         let mut data = Form::new();

src/clients/oauth.rs

@@ -30,6 +30,8 @@ use url::Url;
 pub trait OAuthClient: BaseClient {
     fn get_oauth(&self) -> &OAuth;
 
+    fn set_token(&mut self, token: Option<Token>);
+
     /// Obtains a user access token given a code, as part of the OAuth
     /// authentication. The access token will be saved internally.
     async fn request_token(&mut self, code: &str) -> ClientResult<()>;
@@ -97,8 +99,9 @@ pub trait OAuthClient: BaseClient {
     #[maybe_async]
     async fn prompt_for_token(&mut self, url: &str) -> ClientResult<()> {
         match self.read_token_cache().await? {
-            Some(ref mut new_token) => {
-                self.get_token_mut().replace(new_token);
+            // TODO: shouldn't this also refresh the obtained token?
+            Some(new_token) => {
+                self.set_token(Some(new_token));
             }
             // Otherwise following the usual procedure to get the token.
             None => {