Time Zones

- Added time zone settings

core/models.py

@@ -1,4 +1,5 @@
 # core/models.py
+from django.conf import settings
 from django.db import models
 from django.utils.text import slugify
 from django.core.exceptions import ValidationError
@@ -161,6 +162,7 @@ DVR_COMSKIP_ENABLED_KEY = slugify("DVR Comskip Enabled")
 DVR_COMSKIP_CUSTOM_PATH_KEY = slugify("DVR Comskip Custom Path")
 DVR_PRE_OFFSET_MINUTES_KEY = slugify("DVR Pre-Offset Minutes")
 DVR_POST_OFFSET_MINUTES_KEY = slugify("DVR Post-Offset Minutes")
+SYSTEM_TIME_ZONE_KEY = slugify("System Time Zone")
 
 
 class CoreSettings(models.Model):
@@ -324,6 +326,30 @@ class CoreSettings(models.Model):
             except Exception:
                 return 0
 
+    @classmethod
+    def get_system_time_zone(cls):
+        """Return configured system time zone or fall back to Django settings."""
+        try:
+            value = cls.objects.get(key=SYSTEM_TIME_ZONE_KEY).value
+            if value:
+                return value
+        except cls.DoesNotExist:
+            pass
+        return getattr(settings, "TIME_ZONE", "UTC") or "UTC"
+
+    @classmethod
+    def set_system_time_zone(cls, tz_name: str | None):
+        """Persist the desired system time zone identifier."""
+        value = (tz_name or "").strip() or getattr(settings, "TIME_ZONE", "UTC") or "UTC"
+        obj, _ = cls.objects.get_or_create(
+            key=SYSTEM_TIME_ZONE_KEY,
+            defaults={"name": "System Time Zone", "value": value},
+        )
+        if obj.value != value:
+            obj.value = value
+            obj.save(update_fields=["value"])
+        return value
+
     @classmethod
     def get_dvr_series_rules(cls):
         """Return list of series recording rules. Each: {tvg_id, title, mode: 'all'|'new'}"""