# Entity: Auth

```python
from fastapi import APIRouter, Depends, HTTPException, status
from fastapi.security import OAuth2PasswordBearer
from core.database import get_db
from sqlalchemy.orm import Session
from models.auth import Auth
from schemas.auth import AuthResponse

router = APIRouter()
oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token")

@router.post("/logout", status_code=200, response_model=AuthResponse)
async def logout(
    token: str = Depends(oauth2_scheme),
    db: Session = Depends(get_db)
):
    """Logout user and invalidate token"""
    auth = db.query(Auth).filter(Auth.token == token).first()
    if not auth:
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail="Invalid token"
        )
    
    db.delete(auth)
    db.commit()
    
    return {"message": "Successfully logged out"}
```