from fastapi import Depends
from fastapi.security import OAuth2PasswordBearer
from sqlalchemy.orm import Session

from ..config import Config
from ..db import Connection, schemas

oauth2_scheme = OAuth2PasswordBearer(tokenUrl="user/auth")


async def get_current_user(
    token: str = Depends(oauth2_scheme),
    db: Session | None = Depends(Connection.get),
    current_config: Config | None = Depends(Config.load),
):
    if current_config is None:
        return None

    username = await current_config.jwt.decode_token(token)
    user = schemas.User.from_db(db, username)

    return user