from datetime import datetime, timedelta
from typing import Optional

from jose import JWTError, jwt
from passlib.context import CryptContext

from schemas.auth import TokenData
from config import settings

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

SECRET_KEY = settings.SECRET_KEY
ALGORITHM = settings.ALGORITHM
ACCESS_TOKEN_EXPIRE_MINUTES = settings.ACCESS_TOKEN_EXPIRE_MINUTES

def decode_token(token: str):
    try:
        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
        username: str = payload.get("sub")
        user_id: str = payload.get("user_id")
        if username is None and user_id is None:
            return None
        token_data = TokenData(username=username, user_id=user_id)
    except JWTError:
        return None
    return token_data