добавлена проверка на существование добавляемого игрока

LichessClientTG_bot/bot.py

@@ -166,7 +166,20 @@ class LichessBot:
         username = update.message.text.strip()
         user_id = update.effective_user.id
         
-        if username:
+        if not username:
+            await update.message.reply_text(
+                "❌ Username не может быть пустым. Попробуйте еще раз."
+            )
+            return WAITING_FOR_USERNAME
+        
+        # Check if user exists on Lichess
+        user_exists = await self.lichess_api.check_user_exists(username)
+        if not user_exists:
+            await update.message.reply_text(
+                f"❌ Игрок {username} не найден на Lichess. Проверьте правильность написания имени."
+            )
+            return WAITING_FOR_USERNAME
+        
         # Add gamer to database (without token)
         gamer_id = self.db.add_gamer(username)
         # Link user to gamer (without token)
@@ -183,11 +196,6 @@ class LichessBot:
         await update.message.reply_text(
             f"✅ Игрок {username} успешно добавлен!"
         )
-        else:
-            await update.message.reply_text(
-                "❌ Username не может быть пустым. Попробуйте еще раз."
-            )
-            return WAITING_FOR_USERNAME
         
         return ConversationHandler.END
     

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: