Move mpos.time.refresh_timezone_preference() to TimeZone.refresh_timezone_preference()

internal_filesystem/builtin/apps/com.micropythonos.settings/assets/settings.py

@@ -42,7 +42,7 @@ class Settings(SettingsActivity):
             # Basic settings, alphabetically:
             {"title": "Light/Dark Theme", "key": "theme_light_dark", "ui": "radiobuttons", "ui_options":  [("Light", "light"), ("Dark", "dark")], "changed_callback": self.theme_changed},
             {"title": "Theme Color", "key": "theme_primary_color", "placeholder": "HTML hex color, like: EC048C", "ui": "dropdown", "ui_options": theme_colors, "changed_callback": self.theme_changed},
-            {"title": "Timezone", "key": "timezone", "ui": "dropdown", "ui_options": [(tz, tz) for tz in TimeZone.get_timezones()], "changed_callback": lambda *args: mpos.time.refresh_timezone_preference()},
+            {"title": "Timezone", "key": "timezone", "ui": "dropdown", "ui_options": [(tz, tz) for tz in TimeZone.get_timezones()], "changed_callback": lambda *args: TimeZone.refresh_timezone_preference()},
             # Advanced settings, alphabetically:
             {"title": "Auto Start App", "key": "auto_start_app", "ui": "radiobuttons", "ui_options":  [(app.name, app.fullname) for app in AppManager.get_app_list()]},
             {"title": "Check IMU Calibration", "key": "check_imu_calibration", "ui": "activity", "activity_class": CheckIMUCalibrationActivity},

internal_filesystem/lib/mpos/time.py

@@ -1,11 +1,8 @@
 import time
-from . import config
 from .time_zone import TimeZone
 
 import localPTZtime
 
-timezone_preference = None
-
 def epoch_seconds():
     import sys
     if sys.platform == "esp32":
@@ -23,22 +20,14 @@ def sync_time():
         print('Syncing time with', ntptime.host)
         ntptime.settime()  # Fetch and set time (in UTC)
         print("Time sync'ed successfully")
-        refresh_timezone_preference() # if the time was sync'ed, then it needs refreshing
+        TimeZone.refresh_timezone_preference() # if the time was sync'ed, then it needs refreshing
     except Exception as e:
         print('Failed to sync time:', e)
 
-def refresh_timezone_preference():
-    global timezone_preference
-    prefs = config.SharedPreferences("com.micropythonos.settings")
-    timezone_preference = prefs.get_string("timezone")
-    if not timezone_preference:
-        timezone_preference = "Etc/GMT" # Use a default value so that it doesn't refresh every time the time is requested
-
 def localtime():
-    global timezone_preference
-    if not timezone_preference: # if it's the first time, then it needs refreshing
-        refresh_timezone_preference()
-    ptz = TimeZone.timezone_to_posix_time_zone(timezone_preference)
+    if not TimeZone.timezone_preference: # if it's the first time, then it needs refreshing
+        TimeZone.refresh_timezone_preference()
+    ptz = TimeZone.timezone_to_posix_time_zone(TimeZone.timezone_preference)
     t = time.time()
     try:
         localtime = localPTZtime.tztime(t, ptz)

internal_filesystem/lib/mpos/time_zone.py

@@ -1,9 +1,12 @@
 from .time_zones import TIME_ZONE_MAP
+from . import config
 
 
 class TimeZone:
     """Timezone utility class for converting and managing timezone information."""
 
+    timezone_preference = None
+
     @staticmethod
     def timezone_to_posix_time_zone(timezone):
         """
@@ -28,3 +31,12 @@ class TimeZone:
             list: List of timezone names (e.g., ['Africa/Abidjan', 'Africa/Accra', ...]).
         """
         return sorted(TIME_ZONE_MAP.keys())  # even though they are defined alphabetical, the order isn't maintained in MicroPython
+
+    @staticmethod
+    def refresh_timezone_preference():
+        """
+        Refresh the timezone preference from SharedPreferences.
+        """
+        TimeZone.timezone_preference = config.SharedPreferences("com.micropythonos.settings").get_string("timezone")
+        if not TimeZone.timezone_preference:
+            TimeZone.timezone_preference = "Etc/GMT" # Use a default value so that it doesn't refresh every time the time is requested