src/bot/handlers/commands/help.py

@@ -1,8 +1,8 @@
 from aiogram.types import Message
 
 from bot.handlers import registry
-from bot.services.database import check_telegram_user
 from bot.utils.types import ChatType
+from database import TelegramUser
 
 
 @registry.register(
@@ -10,12 +10,7 @@ from bot.utils.types import ChatType
     chat_types=ChatType.PRIVATE,
     description="Help Command Function Description",
 )
-async def cmd_help(message: Message, session) -> None:
-    if message.from_user is None:
-        return
-
-    user = await check_telegram_user(session, message.from_user.id)
-
+async def cmd_help(message: Message, user: TelegramUser) -> None:
     await message.answer(
         "Help Command Function Answer Text. "
         f"Your locale is {user.lang}"

src/bot/middlewares/__init__.py

@@ -5,12 +5,14 @@ from aiogram import Dispatcher
 from sqlalchemy.ext.asyncio import async_sessionmaker
 
 from .database import DatabaseSessionMiddleware
+from .telegram_user import TelegramUserMiddleware
 
 
 def connect_middlewares(
     dispatcher: Dispatcher,
     session_maker: async_sessionmaker,
 ) -> None:
-    database_middleware = DatabaseSessionMiddleware(session_maker)
-
-    dispatcher.update.middleware(database_middleware)
+    dispatcher.update.middleware(
+        DatabaseSessionMiddleware(session_maker),
+    )
+    dispatcher.update.middleware(TelegramUserMiddleware())

src/bot/middlewares/telegram_user.py

@@ -0,0 +1,33 @@
+from typing import Any, Awaitable, Callable, Dict, Optional
+
+from aiogram import BaseMiddleware
+from aiogram.types import TelegramObject
+from aiogram.types import User as AiogramUser
+
+from bot.services import check_telegram_user
+
+
+class TelegramUserMiddleware(BaseMiddleware):
+    async def __call__(
+        self,
+        handler: Callable[
+            [TelegramObject, Dict[str, Any]], Awaitable[Any]
+        ],
+        event: TelegramObject,
+        data: Dict[str, Any],
+    ) -> Any:
+        aiogram_user: Optional[AiogramUser] = data.get(
+            "event_from_user",
+        )
+
+        if aiogram_user is None or aiogram_user.is_bot:
+            return await handler(event, data)
+
+        session = data["session"]
+
+        telegram_user = await check_telegram_user(
+            session, aiogram_user.id
+        )
+
+        data["user"] = telegram_user
+        return await handler(event, data)