def index():
    try:
        # TODO: this may not work
        current_user = request.authorization.username
    except:
        current_user = '******'

    # deauthorzie URL (Link works in Firefox and Chrome. In Opera need to paste in address bar. Not work in IE.)
    parts = list(urlparse.urlsplit(request.url))
    parts[1] = 'foobar@' + parts[1]
    deauthorzie_url = urlparse.urlunsplit(parts)

    today = datetime.datetime.utcnow().date().isoformat()

    agg_url = "/v1/campaign_aggregate?start_day=%s&end_day=%s" % (today, today)
    install_url = "/v1/installs?day=%s" % (today,)

    return render_template('index.html',
        usernames = ', '.join(sorted(DemoData.get_users())),
        current_user = current_user,
        deauthorzie_url = deauthorzie_url,
        agg_url = agg_url,
        install_url = install_url,
    )