from functools import wraps

import structlog
from django.conf import settings
from django.contrib.auth.views import redirect_to_login
from django.utils.deprecation import MiddlewareMixin

logger = structlog.get_logger(__name__)


class AuthenticationRequiredMiddleware(MiddlewareMixin):
    def process_view(self, request, callback, callback_args, callback_kwargs):
        if getattr(callback, "authentication_exempt", False):
            return None

        if not request.user.is_authenticated:
            return redirect_to_login(request.build_absolute_uri(), settings.LOGIN_URL)

        return None


def django_view_authentication_exempt(view_func):
    def wrapped_view(*args, **kwargs):
        return view_func(*args, **kwargs)

    wrapped_view.authentication_exempt = True
    return wraps(view_func)(wrapped_view)


class DjangoViewAuthenticationExemptDRFViewMixin:
    @classmethod
    def as_view(cls, **initkwargs):
        view = super(DjangoViewAuthenticationExemptDRFViewMixin, cls).as_view(
            **initkwargs
        )
        view.authentication_exempt = True
        return view


class DjangoViewAuthenticationExemptDRFViewSetMixin:
    @classmethod
    def as_view(cls, actions=None, **initkwargs):
        view = super(DjangoViewAuthenticationExemptDRFViewSetMixin, cls).as_view(
            actions=actions, **initkwargs
        )
        view.authentication_exempt = True
        return view