Update Spotify access token

Fixes #1769

src/engine/enginebase.cpp

@@ -256,3 +256,19 @@ bool EngineBase::ValidOutput(const QString &output) {
   return (true);
 
 }
+
+void EngineBase::UpdateSpotifyAccessToken(const QString &spotify_access_token) {
+
+#ifdef HAVE_SPOTIFY
+
+  spotify_access_token_ = spotify_access_token;
+
+  SetSpotifyAccessToken();
+
+#else
+
+  Q_UNUSED(spotify_access_token)
+
+#endif  // HAVE_SPOTIFY
+
+}

src/engine/enginebase.h

@@ -127,6 +127,7 @@ class EngineBase : public QObject {
   virtual void ReloadSettings();
   void UpdateVolume(const uint volume);
   void EmitAboutToFinish();
+  void UpdateSpotifyAccessToken(const QString &spotify_access_token);
 
  public:
   // Simple accessors
@@ -175,6 +176,11 @@ class EngineBase : public QObject {
 
   void Finished();
 
+ private:
+#ifdef HAVE_SPOTIFY
+  virtual void SetSpotifyAccessToken() {}
+#endif
+
  protected:
   bool playbin3_enabled_;
   bool exclusive_mode_;

src/engine/gstengine.cpp

@@ -517,10 +517,20 @@ bool GstEngine::ExclusiveModeSupport(const QString &output) const {
 
 void GstEngine::ReloadSettings() {
 
+#ifdef HAVE_SPOTIFY
+  const QString old_spotify_access_token = spotify_access_token_;
+#endif
+
   EngineBase::ReloadSettings();
 
   if (output_.isEmpty()) output_ = QLatin1String(kAutoSink);
 
+#ifdef HAVE_SPOTIFY
+  if (current_pipeline_ && old_spotify_access_token != spotify_access_token_) {
+    current_pipeline_->set_spotify_access_token(spotify_access_token_);
+  }
+#endif
+
 }
 
 void GstEngine::ConsumeBuffer(GstBuffer *buffer, const int pipeline_id, const QString &format) {
@@ -1199,3 +1209,13 @@ bool GstEngine::AnyExclusivePipelineActive() const {
   return (current_pipeline_ && current_pipeline_->exclusive_mode()) || OldExclusivePipelineActive();
 
 }
+
+#ifdef HAVE_SPOTIFY
+void GstEngine::SetSpotifyAccessToken() {
+
+  if (current_pipeline_) {
+    current_pipeline_->set_spotify_access_token(spotify_access_token_);
+  }
+
+}
+#endif  // HAVE_SPOTIFY

src/engine/gstengine.h

@@ -146,6 +146,10 @@ class GstEngine : public EngineBase, public GstBufferConsumer {
   bool OldExclusivePipelineActive() const;
   bool AnyExclusivePipelineActive() const;
 
+#ifdef HAVE_SPOTIFY
+  void SetSpotifyAccessToken() override;
+#endif
+
  private:
   SharedPtr<TaskManager> task_manager_;
   GstDiscoverer *discoverer_;