connect database

app/infrastructure/database/crud.py

@@ -0,0 +1,22 @@
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from .models import User
+
+
+async def get_user_by_tg_id(session: AsyncSession, user_tg_id: int) -> User | None:
+    result = await session.execute(select(User).where(User.tg_id == user_tg_id))
+    return result.scalar_one_or_none()
+
+
+async def create_user(
+    session: AsyncSession,
+    tg_id: int,
+    fullname: str,
+    phone: str = "",
+    role: str = "user",
+) -> User:
+    user = User(tg_id=tg_id, fullname=fullname, role=role, phone=phone)
+    session.add(user)
+    await session.commit()
+    return user