Add Spotify support

src/settings/spotifysettingspage.h

@@ -0,0 +1,64 @@
+/*
+ * Strawberry Music Player
+ * Copyright 2022-2024, 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
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Strawberry is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef SPOTIFYSETTINGSPAGE_H
+#define SPOTIFYSETTINGSPAGE_H
+
+#include "config.h"
+
+#include <QObject>
+#include <QString>
+
+#include "core/shared_ptr.h"
+#include "settings/settingspage.h"
+
+class QEvent;
+class SpotifyService;
+class SettingsDialog;
+class Ui_SpotifySettingsPage;
+
+class SpotifySettingsPage : public SettingsPage {
+  Q_OBJECT
+
+ public:
+  explicit SpotifySettingsPage(SettingsDialog *dialog, QWidget *parent = nullptr);
+  ~SpotifySettingsPage() override;
+
+  static const char *kSettingsGroup;
+
+  void Load() override;
+  void Save() override;
+
+  bool eventFilter(QObject *object, QEvent *event) override;
+
+ signals:
+  void Authorize();
+
+ private slots:
+  void LoginClicked();
+  void LogoutClicked();
+  void LoginSuccess();
+  void LoginFailure(const QString &failure_reason);
+
+ private:
+  Ui_SpotifySettingsPage *ui_;
+  SharedPtr<SpotifyService> service_;
+};
+
+#endif  // SPOTIFYSETTINGSPAGE_H