connect database

app/bot/middlewares/database.py

@@ -0,0 +1,18 @@
+from typing import Any, Awaitable, Callable
+
+from aiogram import BaseMiddleware
+from aiogram.types import Update
+
+from app.infrastructure.database import get_session
+
+
+class DbSessionMiddleware(BaseMiddleware):
+    async def __call__(
+        self,
+        handler: Callable[[Update, dict[str, Any]], Awaitable[Any]],
+        event: Update,
+        data: dict[str, Any],
+    ):
+        async with get_session() as session:
+            data["session"] = session
+            return await handler(event, data)