import typing

from fastapi import Request
from strawberry.permission import BasePermission

from api.token import decode_user_token
from api.token import token_from_headers

if typing.TYPE_CHECKING:
    from strawberry.types import Info


class IsAuthenticated(BasePermission):
    message = "User is not authenticated"

    async def has_permission(self, source: typing.Any, info: "Info", **kwargs) -> bool:
        req: Request = info.context["request"]
        _, auth_token = token_from_headers(req.headers)

        if len(auth_token) == 0:
            return False

        try:
            decode_user_token(auth_token)
            return True
        except Exception:
            return False