ogclient-systray: add new systray program for ogclient

Add make.bat for an easier building process in Windows. This
script generates ogclient.exe and ogclient-systray binaries in
a ./dist directory.

Add ogclient-systray program. This python program polls the
existence of the ogclient process and shows a systray if the
ogclient service is active.

Update utils/create_version_file.py to generate information for
the systray binary.

make.bat

@@ -0,0 +1,8 @@
+:: Create version_info.txt
+python utils\create_version_file.py
+
+:: Build the service binary with clean
+pyinstaller --onefile --noconsole --version-file=ogclient-version-info.txt --clean ogclient
+
+:: Build the systray binary with clean
+pyinstaller --onefile --noconsole --version-file=systray-version-info.txt --clean systray\ogclient-systray

systray/ogclient-systray

@@ -0,0 +1,99 @@
+#!/usr/bin/python3
+
+#
+# Copyright (C) 2020-2024 Soleta Networks <info@soleta.eu>
+#
+# This program is free software: you can redistribute it and/or modify it under
+# the terms of the GNU Affero General Public License as published by the
+# Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+
+import time
+import multiprocessing as mp
+import psutil
+
+from PIL import Image, ImageDraw
+from pystray import Icon, Menu, MenuItem
+
+SERVICE_POLL_INTERVAL = 5
+
+
+def _create_default_image():
+    """
+    Creates a default image for the tray icon. Use in case
+    no favicon.ico is found. The image will be a blue circle.
+    """
+    width = height = 250
+    circle_color = (45, 158, 251)
+
+    # Create a new image with a transparent background
+    image = Image.new('RGBA', (width, height), (0, 0, 0, 0))
+    dc = ImageDraw.Draw(image)
+
+    # Draw circle
+    circle_radius = min(width, height) // 2 - 10
+    circle_center = (width // 2, height // 2)
+    dc.ellipse(
+        (circle_center[0] - circle_radius, circle_center[1] - circle_radius,
+         circle_center[0] + circle_radius, circle_center[1] + circle_radius),
+        fill=circle_color
+    )
+    return image
+
+
+def create_icon_image():
+    try:
+        image = Image.open(r'./favicon.ico')
+        image = Image.composite(image, Image.new('RGB', image.size, 'white'), image)
+    except FileNotFoundError:
+        image = _create_default_image()
+    return image
+
+
+def create_systray():
+    menu = Menu(MenuItem('ogclient service running',
+                         lambda icon, item: None))
+    icon = Icon('ogClient', create_icon_image(), menu=menu)
+    icon.run()
+
+
+def is_ogclient_service_active():
+    service_name = 'ogclient'
+    try:
+        service = psutil.win_service_get(service_name)
+        service = service.as_dict()
+        return service.get('status') == 'running'
+    except Exception:
+        return False
+
+
+def _session_check_loop():
+    systray_process = None
+    try:
+        while True:
+            session_status = is_ogclient_service_active()
+            is_systray_active = systray_process and systray_process.is_alive()
+
+            if session_status and not is_systray_active:
+                systray_process = mp.Process(target=create_systray, daemon=True)
+                systray_process.start()
+            elif not session_status and is_systray_active:
+                systray_process.terminate()
+                systray_process.join()
+                systray_process = None
+
+            time.sleep(SERVICE_POLL_INTERVAL)
+    except KeyboardInterrupt:
+        if systray_process and systray_process.is_alive():
+            systray_process.terminate()
+            systray_process.join()
+
+
+def main():
+    mp.freeze_support()
+    mp.set_start_method('spawn')
+    _session_check_loop()
+
+
+if __name__ == "__main__":
+    main()

utils/create_version_file.py

@@ -30,12 +30,12 @@ VSVersionInfo(
         '040904B0',
         [
         StringStruct('CompanyName', 'Soleta Networks'),
-        StringStruct('FileDescription', 'ogClient - OpenGnsys Client Application'),
+        StringStruct('FileDescription', '{appname} - OpenGnsys Client Application'),
         StringStruct('FileVersion', '{version}'),
-        StringStruct('InternalName', 'ogclient'),
+        StringStruct('InternalName', '{appname}'),
         StringStruct('LegalCopyright', 'Copyright © {year} Soleta Networks'),
-        StringStruct('OriginalFilename', 'ogclient.exe'),
-        StringStruct('ProductName', 'ogClient'),
+        StringStruct('OriginalFilename', '{appname}.exe'),
+        StringStruct('ProductName', '{appname}'),
         StringStruct('ProductVersion', '{version}')
         ]
       )
@@ -72,6 +72,13 @@ if __name__ == "__main__":
     version = get_git_version()
     major, minor, patch = version_to_tuple(version)
     current_year = datetime.now().year
-    version_file = version_template.format(major=major, minor=minor, patch=patch, version=version, year=current_year)
-    with open('version_info.txt', 'w', encoding='utf-8') as f:
+    version_file = version_template.format(major=major, minor=minor,
+                                           patch=patch, version=version,
+                                           year=current_year, appname='ogclient')
+    with open('ogclient-version-info.txt', 'w', encoding='utf-8') as f:
+        f.write(version_file)
+    version_file = version_template.format(major=major, minor=minor,
+                                           patch=patch, version=version,
+                                           year=current_year, appname='ogclient-systray')
+    with open('systray-version-info.txt', 'w', encoding='utf-8') as f:
         f.write(version_file)