Add functionality to check and send message if semaphore file exists on initialization

telegram_helper.py

@@ -8,6 +8,9 @@ class TelegramHelper:
     def __init__(self, bot):
         self.bot = bot
         self.telegram_bot_token = os.getenv('TELEGRAM_BOT_TOKEN')
+        
+        # Call the method to check for reboot file and send message
+        self._check_and_send_reboot_message()
 
     async def start(self, update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
         await self.bot.start()
@@ -93,3 +96,13 @@ class TelegramHelper:
         
         logging.info("Bot is running...")
         application.run_polling()
+        
+    def _check_and_send_reboot_message(self):
+        reboot_file_path = "./.doreboot"
+        if os.path.exists(reboot_file_path):
+            with open(reboot_file_path, 'r') as f:
+                chat_id = f.read().strip()
+                if chat_id:
+                    message = "The application has been successfully initialized after a reboot."
+                    application = Application.builder().token(self.telegram_bot_token).build()
+                    application.bot.send_message(chat_id=chat_id, text=message)