Scrobbler: Refactor and add MusicBrainz integration

src/scrobbler/librefmscrobbler.h

@@ -1,6 +1,6 @@
 /*
  * Strawberry Music Player
- * Copyright 2018-2021, Jonas Kvinge <jonas@jkvinge.net>
+ * Copyright 2018-2023, Jonas Kvinge <jonas@jkvinge.net>
  *
  * Strawberry is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -24,49 +24,25 @@
 
 #include <QtGlobal>
 #include <QObject>
-#include <QString>
 
-#include "core/song.h"
 #include "scrobblingapi20.h"
 
 class Application;
-class NetworkAccessManager;
-class ScrobblerCache;
 
 class LibreFMScrobbler : public ScrobblingAPI20 {
   Q_OBJECT
 
  public:
   explicit LibreFMScrobbler(Application *app, QObject *parent = nullptr);
-  ~LibreFMScrobbler() override;
 
   static const char *kName;
   static const char *kSettingsGroup;
 
-  NetworkAccessManager *network() const override { return network_; }
-  ScrobblerCache *cache() const override { return cache_; }
-
  private:
   static const char *kAuthUrl;
   static const char *kApiUrl;
   static const char *kCacheFile;
 
-  QString settings_group_;
-  QString auth_url_;
-  QString api_url_;
-  QString api_key_;
-  QString secret_;
-  Application *app_;
-  NetworkAccessManager *network_;
-  ScrobblerCache *cache_;
-  bool enabled_;
-  bool subscriber_;
-  QString username_;
-  QString session_key_;
-  bool submitted_;
-  Song song_playing_;
-  quint64 timestamp_;
-
 };
 
 #endif  // LIBREFMSCROBBLER_H