implement queue for channel helper

bots/models.py

@@ -2,6 +2,7 @@ from django.conf import settings
 from django.contrib.contenttypes.fields import GenericForeignKey, GenericRelation
 from django.contrib.contenttypes.models import ContentType
 from django.db import models
+from django.utils import timezone
 from telegram import Bot
 from telegram.ext import Dispatcher
 
@@ -31,6 +32,13 @@ class TelegramBot(models.Model):
         self.config.build_dispatcher(dispatcher)
         return dispatcher
 
+    def run_periodic_task(self):
+        if not hasattr(self.config, 'periodic_task') or not self.periodic_interval or \
+                (self.periodic_last_run and self.periodic_last_run > timezone.now() - self.periodic_interval):
+            return
+        self.config.periodic_task(self.get_bot())
+        self.periodic_last_run = timezone.now()
+
     def __str__(self):
         return f'#{self.pk} {self.title}'