#7 Notifier is now considering Telegram API sendMessage() rate limit.

telegram.py

@@ -1,3 +1,5 @@
+import time
+
 from telebot import TeleBot
 from telebot.handler_backends import BaseMiddleware
 from telebot.types import Message
@@ -88,13 +90,22 @@ class CommandProcessor:
 class Notifier:
     """Sends notifications to users about new RSS feed items."""
 
+    BATCH_LIMIT: int = 30
+
+    sent_counter: int = 0
+
     def __init__(self, token: str):
         self.bot: TeleBot = TeleBot(token)
 
-    def send_updates(self, chat_id: int, updates: list[FeedItem]):
+    def send_updates(self, chat_ids: list[int], updates: list[FeedItem]):
         """Send notification about new items to the user"""
-        for update in updates:
-            self.__send_update(chat_id, update)
+        for chat_id in chat_ids:
+            for update in updates:
+                self.__send_update(chat_id, update)
+                self.sent_counter += 1
+                if self.sent_counter >= self.BATCH_LIMIT:
+                    # TODO: probably implement better later
+                    time.sleep(1)
 
     def __send_update(self, telegram_id: int, update: FeedItem):
         self.bot.send_message(