from fastapi import Depends, HTTPException, status
from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
from sqlalchemy.orm import Session
from app.db.session import get_db
from app.core.security import verify_token
from app.services.user import get_user_by_email
from app.models.user import User

security = HTTPBearer()


def get_current_user(
    credentials: HTTPAuthorizationCredentials = Depends(security),
    db: Session = Depends(get_db),
) -> User:
    credentials_exception = HTTPException(
        status_code=status.HTTP_401_UNAUTHORIZED,
        detail="Could not validate credentials",
        headers={"WWW-Authenticate": "Bearer"},
    )

    token = credentials.credentials
    email = verify_token(token)
    if email is None:
        raise credentials_exception

    user = get_user_by_email(db, email=email)
    if user is None:
        raise credentials_exception

    return user


def get_current_active_user(current_user: User = Depends(get_current_user)) -> User:
    if not current_user.is_active:
        raise HTTPException(status_code=400, detail="Inactive user")
    return current_user