from typing import Tuple, Union

import app.messages.api_responses.user_responses as response
from app.db import user_db
from app.models.user_model import User
from app.mail.mail import send_mail
from app.services.user import user_helper as helper
from app.messages.mail_responses.user_email import USER_EMAIL_SUCCESSFULLY_LOGGED_OUT


def logout(jwt_token, user_id, send_notif: bool) -> Tuple[Union[dict, str], int]:
    """
    Logs out a user by invalidating the provided JWT.

    :param jti: JWT ID.
    :type jti: str
    :param exp: JWT expiration timestamp.
    :type exp: int
    :return: Tuple containing a dictionary and an HTTP status code.
    :rtype: Tuple[Union[dict, str], int]
    """

    jti = jwt_token["jti"]
    exp = jwt_token["exp"]

    user: User = user_db.fetch_by_id(user_id)

    helper.invalidate_token(jti, exp)
    if send_notif:
        send_mail(USER_EMAIL_SUCCESSFULLY_LOGGED_OUT, user.email)
    return response.USER_LOGGED_OUT_SUCCESSFULLY