refactored bot code

bot/bot.py

@@ -0,0 +1,18 @@
+import os
+import telebot
+import logging
+from bot.handlers.init import register_all_handlers
+
+logger = logging.getLogger(__name__)
+
+_bot = None
+
+
+def get_bot():
+    global _bot
+    if _bot is None:
+        BOT_TOKEN = os.environ.get("BOT_TOKEN")
+        _bot = telebot.TeleBot(BOT_TOKEN, threaded=False)
+        register_all_handlers(_bot)
+        logger.info("Telegram bot initialized.")
+    return _bot