migrated to redis

backend/api/serializers/system.py

@@ -1,7 +1,16 @@
+from datetime import timedelta
+
 from rest_framework import serializers
 
 from api.models import Banner, Job, SystemConfig
 
+_INTERVAL_PERIOD_TO_TIMEDELTA = {
+    "days": lambda every: timedelta(days=every),
+    "hours": lambda every: timedelta(hours=every),
+    "minutes": lambda every: timedelta(minutes=every),
+    "seconds": lambda every: timedelta(seconds=every),
+}
+
 
 class SystemConfigSerializer(serializers.ModelSerializer):
     class Meta:
@@ -17,6 +26,21 @@ class SystemConfigSerializer(serializers.ModelSerializer):
 
 class JobSerializer(serializers.ModelSerializer):
     name_display = serializers.CharField(source="get_name_display", read_only=True)
+    next_run = serializers.SerializerMethodField()
+
+    def get_next_run(self, obj):
+        from django_celery_beat.models import PeriodicTask
+
+        task = PeriodicTask.objects.filter(name=f"job:{obj.name}", enabled=True).first()
+        if not task or not task.interval:
+            return None
+        base = task.last_run_at or obj.last_run
+        if not base:
+            return None
+        delta_fn = _INTERVAL_PERIOD_TO_TIMEDELTA.get(task.interval.period)
+        if not delta_fn:
+            return None
+        return base + delta_fn(task.interval.every)
 
     class Meta:
         model = Job