refactors

backend/repositories/user.py

@@ -0,0 +1,23 @@
+"""User repository for database queries."""
+
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from models import User
+
+
+class UserRepository:
+    """Repository for user-related database queries."""
+
+    def __init__(self, db: AsyncSession):
+        self.db = db
+
+    async def get_by_email(self, email: str) -> User | None:
+        """Get a user by email."""
+        result = await self.db.execute(select(User).where(User.email == email))
+        return result.scalar_one_or_none()
+
+    async def get_by_id(self, user_id: int) -> User | None:
+        """Get a user by ID."""
+        result = await self.db.execute(select(User).where(User.id == user_id))
+        return result.scalar_one_or_none()