from fastapi import Request, Depends
from sqlalchemy.orm import Session
from passlib.context import CryptContext

from web.database import get_db
from web.models import User

pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")


def hash_password(password: str) -> str:
    return pwd_context.hash(password)


def verify_password(plain: str, hashed: str) -> bool:
    return pwd_context.verify(plain, hashed)


def get_current_user(request: Request, db: Session = Depends(get_db)) -> User | None:
    user_id = request.session.get("user_id")
    if not user_id:
        return None
    return db.query(User).filter(User.id == user_id).first()