refactor send_updates method in Notifier class and add __register_request_and_wait method

telegram.py

@@ -90,7 +90,7 @@ class CommandProcessor:
 class Notifier:
     """Sends notifications to users about new RSS feed items."""
 
-    BATCH_LIMIT: int = 29
+    BATCH_LIMIT: int = 30
 
     sent_counter: int = 0
 
@@ -99,7 +99,11 @@ class Notifier:
 
     def send_updates(self, chat_ids: list[int], updates: list[FeedItem], feed_title: str):
         """Send notification about new items to the user"""
+        if not updates:
+            return
+
         for chat_id in chat_ids:
+            self.__register_request_and_wait()
             self.bot.send_message(
                 chat_id=chat_id,
                 text=f'Updates from the {feed_title} feed:'
@@ -107,12 +111,9 @@ class Notifier:
             self.sent_counter += 1
 
             for update in updates:
+                self.__register_request_and_wait()
                 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)
-                    self.sent_counter = 0
 
     def __send_update(self, chat_id: int, update: FeedItem):
         self.bot.send_message(
@@ -121,6 +122,12 @@ class Notifier:
             parse_mode='HTML'
         )
 
+    def __register_request_and_wait(self):
+        if self.sent_counter >= self.BATCH_LIMIT:
+            # TODO: probably implement better later
+            time.sleep(1)
+            self.sent_counter = 0
+
     @staticmethod
     def __format_message(item: FeedItem) -> str:
         return (