Fullscreen CLI option

ingame/main.py

+import argparse
 import sys
 from pathlib import Path
-from PySide6.QtGui import QGuiApplication
+from typing import cast
+
+from PySide6.QtGui import QGuiApplication, QWindow
 from PySide6.QtQml import QQmlApplicationEngine
+
 from ingame.models.App import App
-from ingame.models.GamesModel import GamesModel
 
 
 # TODO: add VirtualKeyboard
 
-def main():
+def main(fullscreen: bool = False):
     app = QGuiApplication(sys.argv)
     app_model = App()
-
     app.aboutToQuit.connect(app_model.close_event)
-
     qml_file = Path(__file__).resolve().parent / "../qml/qml.qml"
     engine = QQmlApplicationEngine()
 
@@ -24,8 +25,21 @@ def main():
     if not engine.rootObjects():
         sys.exit(-1)
 
+    window: QWindow = cast(QWindow, engine.rootObjects()[0])
+    window.setVisibility(fullscreen and window.Visibility.FullScreen or window.Visibility.Windowed)
+
     sys.exit(app.exec())
 
 
 if __name__ == "__main__":
-    main()
+    parser = argparse.ArgumentParser(description="Game listing and launcher application")
+    parser.add_argument(
+        "--fullscreen",
+        type=bool,
+        help="whether to force use fullscreen mode for application or not",
+        required=False,
+        action=argparse.BooleanOptionalAction
+    )
+
+    args = parser.parse_args()
+    main(fullscreen=args.fullscreen or False)