make extract_bot_id return None in case validation fails

Author: coder2020official

telebot/__init__.py

@@ -191,11 +191,11 @@ def __init__(
         self.allow_sending_without_reply = allow_sending_without_reply
         self.webhook_listener = None
         self._user = None
-        self.bot_id: int = None
 
         if validate_token:
             util.validate_token(self.token)
-            self.bot_id = util.extract_bot_id(self.token) # subject to change in future, unspecified
+        
+        self.bot_id: Union[int, None] = util.extract_bot_id(self.token) # subject to change in future, unspecified
 
         # logs-related
         if colorful_logs:

telebot/async_telebot.py

@@ -189,11 +189,11 @@ def __init__(self, token: str, parse_mode: Optional[str]=None, offset: Optional[
         self.middlewares = []
 
         self._user = None # set during polling
-        self.bot_id: int = None
 
         if validate_token:
             util.validate_token(self.token)
-            self.bot_id: int = util.extract_bot_id(self.token) # subject to change, unspecified
+        
+        self.bot_id: Union[int, None] = util.extract_bot_id(self.token) # subject to change, unspecified
 
 
     @property

telebot/util.py

@@ -698,7 +698,11 @@ def validate_token(token) -> bool:
 
     return True
 
-def extract_bot_id(token) -> str:
+def extract_bot_id(token) -> Union[int, None]:
+    try:
+        validate_token(token)
+    except ValueError:
+        return None
     return int(token.split(':')[0])