# -*- encoding: utf-8 -*-

import time

import keycloak_oidc.views

class KeycloakSessionRefreshMiddleware(object):
    def __init__(self, get_response):
        self.get_response = get_response
        # One-time configuration and initialization.

    def __call__(self, request):
        # Code to be executed for each request before
        # the view (and later middleware) are called.

        refresh_expires_at = request.session.get('refresh_expires_at',None)
        #print("refresh_expires_at", refresh_expires_at, time.time())

        if refresh_expires_at is not None:
            if refresh_expires_at - time.time() < 5*60: # 5 minutes before expiration
                rslt = keycloak_oidc.views.renew_session(request)

                if rslt != 0:
                    # renew not successful
                    return keycloak_oidc.views.logout(request, multiSessionFound=False)

        return self.get_response(request)