добавлена проверка на существование добавляемого игрока

LichessClientTG_bot/lichess_api.py

@@ -118,6 +118,25 @@ class LichessAPI:
             logger.error(f"Error getting puzzles period: {e}")
             return None
     
+    async def check_user_exists(self, username: str) -> bool:
+        """Check if user exists on Lichess"""
+        try:
+            async with aiohttp.ClientSession() as session:
+                async with session.get(
+                    f"{self.lichess_base_url}/user/{username}"
+                ) as response:
+                    if response.status == 200:
+                        return True
+                    elif response.status == 404:
+                        logger.warning(f"User {username} not found on Lichess (404)")
+                        return False
+                    else:
+                        logger.error(f"Failed to check user existence: {response.status}")
+                        return False
+        except Exception as e:
+            logger.error(f"Error checking user existence: {e}")
+            return False
+    
     async def get_user_ratings(self, username: str) -> Optional[Dict[str, Any]]:
         """Get user ratings from Lichess API"""
         try: