log tray/notification capabilities

gotify_tray/gui/Tray.py

@@ -1,11 +1,21 @@
+import logging
+
 from PyQt6 import QtGui, QtWidgets
 from gotify_tray.__version__ import __title__
 
 
+logger = logging.getLogger("gotify-tray")
+
+
 class Tray(QtWidgets.QSystemTrayIcon):
     def __init__(self):
         super(Tray, self).__init__()
 
+        if not self.isSystemTrayAvailable():
+            logger.warning("System tray is not available.")
+        if not self.supportsMessages():
+            logger.warning("System does not support notifications.")
+
         self.set_icon_error()
         self.setToolTip(__title__)