from typing import Any, Optional, Set, Union

from django.contrib.auth.base_user import AbstractBaseUser
from django.contrib.auth.models import AnonymousUser, User
from django.core.handlers.wsgi import WSGIRequest

UserModel: Any

class ModelBackend:
    def authenticate(
        self, request: Any, username: Optional[Union[int, str]] = ..., password: Optional[str] = ..., **kwargs: Any
    ) -> Optional[AbstractBaseUser]: ...
    def user_can_authenticate(self, user: Optional[AbstractBaseUser]) -> bool: ...
    def get_user_permissions(self, user_obj: AbstractBaseUser, obj: None = ...) -> Set[str]: ...
    def get_group_permissions(self, user_obj: AbstractBaseUser, obj: None = ...) -> Set[str]: ...
    def get_all_permissions(self, user_obj: AbstractBaseUser, obj: Optional[str] = ...) -> Set[str]: ...
    def has_perm(self, user_obj: Union[AbstractBaseUser, AnonymousUser], perm: str, obj: Optional[str] = ...) -> bool: ...
    def has_module_perms(self, user_obj: Union[AbstractBaseUser, AnonymousUser], app_label: str) -> bool: ...
    def get_user(self, user_id: int) -> AbstractBaseUser: ...

class AllowAllUsersModelBackend(ModelBackend):
    def user_can_authenticate(self, user: AbstractBaseUser) -> bool: ...

class RemoteUserBackend(ModelBackend):
    create_unknown_user: bool = ...
    def authenticate(self, request: WSGIRequest, remote_user: Optional[str]) -> Optional[User]: ...
    def clean_username(self, username: str) -> str: ...
    def configure_user(self, user: User) -> User: ...

class AllowAllUsersRemoteUserBackend(RemoteUserBackend):
    def user_can_authenticate(self, user: User) -> bool: ...