import time
from django.http import HttpResponseRedirect
from django.core.urlresolvers import reverse
from django.conf import settings


def process(request):
    next_check = request.session.get("mfa", {}).get("next_check", False)
    if not next_check:
        return None
    now = int(time.time())
    if now >= next_check:
        method = request.session["mfa"]["method"]
        path = request.META["PATH_INFO"]
        return HttpResponseRedirect(
            reverse(method + "_auth")
            + "?next=%s" % (settings.BASE_URL + path).replace("//", "/")
        )
    return None