Add setTheme D-Bus API

Signed-off-by: weeman <weeman@frankfurt.ccc.de>

src/dbus/NhekoDBusApi.cpp

@@ -170,6 +170,14 @@ setStatusMessage(const QString &message)
         interface.call(QDBus::NoBlock, QStringLiteral("setStatusMessage"), message);
 }
 
+void
+setTheme(const QString &theme)
+{
+    if (QDBusInterface interface{QStringLiteral(NHEKO_DBUS_SERVICE_NAME), QStringLiteral("/")};
+        interface.isValid())
+        interface.call(QDBus::NoBlock, QStringLiteral("setTheme"), theme);
+}
+
 } // nheko::dbus
 
 /**

src/dbus/NhekoDBusApi.h

@@ -85,6 +85,9 @@ statusMessage();
 //! Sets the user's status message (if supported by the homeserver).
 void
 setStatusMessage(const QString &message);
+//! Sets the current theme (supported values: "light", "dark" or "system")
+void
+setTheme(const QString &theme);
 
 QDBusArgument &
 operator<<(QDBusArgument &arg, const RoomInfoItem &item);

src/dbus/NhekoDBusBackend.cpp

@@ -11,6 +11,7 @@
 #include "Logging.h"
 #include "MainWindow.h"
 #include "MxcImageProvider.h"
+#include "UserSettingsPage.h"
 #include "timeline/RoomlistModel.h"
 #include "timeline/TimelineModel.h"
 
@@ -112,6 +113,12 @@ NhekoDBusBackend::setStatusMessage(const QString &message)
     ChatPage::instance()->setStatus(message);
 }
 
+void
+NhekoDBusBackend::setTheme(const QString &theme)
+{
+    UserSettings::instance()->setTheme(theme);
+}
+
 void
 NhekoDBusBackend::bringWindowToTop() const
 {

src/dbus/NhekoDBusBackend.h

@@ -40,6 +40,8 @@ public slots:
     Q_SCRIPTABLE QString statusMessage() const;
     //! Sets the user's status message.
     Q_SCRIPTABLE void setStatusMessage(const QString &message);
+    //! Sets the current theme (supported values: "light", "dark" or "system")
+    Q_SCRIPTABLE void setTheme(const QString &theme);
 
 private:
     void bringWindowToTop() const;