first commit

callbacks/screen.py

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+import monitorcontrol
+
+def get_monitors():
+    """Retrieve a list of connected monitors."""
+    return monitorcontrol.get_monitors()
+
+def set_brightness(monitor, brightness):
+    """Set the brightness of a specific monitor."""
+    if not 0 <= brightness <= 100:
+        raise ValueError("Brightness must be between 0 and 100")
+    with monitor:
+        monitor.set_luminance(brightness)
+        print(f"Set brightness to {brightness}%")
+
+
+def chenge_brightness(args):
+    try:
+        level = args.get('level', 10)
+        monitors = get_monitors()
+        if not monitors:
+            raise OSError(f"No DDC/CI compatible monitors found.")
+            return
+
+        for i, monitor in enumerate(monitors):
+            set_brightness(monitor, level)
+
+    except Exception as e:
+        raise OSError(f"An error occurred: {e}")