fixes related to automation and celery schedules

backend/igny8_core/business/automation/views.py

@@ -115,13 +115,30 @@ class AutomationViewSet(viewsets.ViewSet):
             site=site
         )
         
-        # Update fields
+        # Update fields - track if schedule changed
+        schedule_changed = False
+        
         if 'is_enabled' in request.data:
+            if config.is_enabled != request.data['is_enabled']:
+                schedule_changed = True
             config.is_enabled = request.data['is_enabled']
         if 'frequency' in request.data:
+            if config.frequency != request.data['frequency']:
+                schedule_changed = True
             config.frequency = request.data['frequency']
         if 'scheduled_time' in request.data:
-            config.scheduled_time = request.data['scheduled_time']
+            new_time = request.data['scheduled_time']
+            if str(config.scheduled_time) != str(new_time):
+                schedule_changed = True
+            config.scheduled_time = new_time
+        
+        # Reset last_run_at and recalculate next_run_at if any schedule setting changed
+        if schedule_changed:
+            config.last_run_at = None
+            # Recalculate next_run_at based on new schedule
+            from igny8_core.business.automation.tasks import _calculate_next_run
+            from django.utils import timezone
+            config.next_run_at = _calculate_next_run(config, timezone.now())
         # Stage enabled toggles
         if 'stage_1_enabled' in request.data:
             config.stage_1_enabled = request.data['stage_1_enabled']
@@ -1921,3 +1938,35 @@ class AutomationViewSet(viewsets.ViewSet):
             },
             'initial_snapshot': initial_snapshot
         }
+
+    @extend_schema(tags=['Automation'])
+    @action(detail=False, methods=['get'], url_path='server_time')
+    def server_time(self, request):
+        """
+        GET /api/v1/automation/server_time/
+        Get current server time (UTC) used for all automation scheduling.
+        
+        Returns:
+        - server_time: Current UTC timestamp (ISO 8601 format)
+        - server_time_formatted: Human-readable UTC time
+        - timezone: Server timezone setting (always UTC)
+        - celery_timezone: Celery task timezone setting
+        - use_tz: Whether Django is timezone-aware
+        
+        Note: All automation schedules (scheduled_time) are in UTC.
+        When user sets "02:00", the automation runs at 02:00 UTC.
+        """
+        from django.conf import settings
+        
+        now = timezone.now()
+        
+        return Response({
+            'server_time': now.isoformat(),
+            'server_time_formatted': now.strftime('%H:%M'),
+            'server_time_date': now.strftime('%Y-%m-%d'),
+            'server_time_time': now.strftime('%H:%M:%S'),
+            'timezone': settings.TIME_ZONE,
+            'celery_timezone': getattr(settings, 'CELERY_TIMEZONE', settings.TIME_ZONE),
+            'use_tz': settings.USE_TZ,
+            'note': 'All automation schedules are in UTC. When you set "02:00", the automation runs at 02:00 UTC.'
+        })