[Client] Sync conflict dialog, onboarding and conflict default

libcockatrice_settings/libcockatrice/settings/deck_sync_settings.h

@@ -0,0 +1,38 @@
+#ifndef DECK_SYNC_SETTINGS_H
+#define DECK_SYNC_SETTINGS_H
+
+#include "settings_manager.h"
+
+#include <QString>
+#include <qtmetamacros.h>
+
+class QObject;
+
+enum DeckSyncConflictDefault
+{
+    DeckSyncConflictAsk = 0,    ///< Ask every time a deck changed on both sides.
+    DeckSyncConflictKeepMine,   ///< Silently keep the local deck.
+    DeckSyncConflictKeepServer, ///< Silently keep the server deck.
+    DeckSyncConflictKeepNewer,  ///< Silently keep whichever side changed last.
+};
+
+class DeckSyncSettings : public SettingsManager
+{
+    Q_OBJECT
+    friend class SettingsCache;
+
+public:
+    [[nodiscard]] int getConflictDefault() const;
+    void setConflictDefault(int _conflictDefault);
+
+signals:
+    void conflictDefaultChanged(int conflictDefault);
+
+public:
+    explicit DeckSyncSettings(const QString &settingPath, QObject *parent = nullptr);
+
+private:
+    DeckSyncSettings(const DeckSyncSettings & /*other*/);
+};
+
+#endif // DECK_SYNC_SETTINGS_H