from django.conf import settings


def google_analytics(request):
    """
    Use the variables returned in this function to
    render your Google Analytics tracking code template.

    Also check whether the site is a tenant site and create a corresponding
    variable to indicate this
    """
    return_dict = {}
    host = request.get_host()
    if getattr(settings, 'GOOGLE_ANALYTICS_PROPERTY_IDS', False):
        ga_prop_id = getattr(settings, 'GOOGLE_ANALYTICS_PROPERTY_IDS').get(
            host)
        which_urlspy = settings.MULTISITE_CMS_URLS.get(host)
        if ga_prop_id is None:
            # Try checking if we have a www in host, if yes we remove
            # that and check in the dict again
            if host.startswith('www.'):
                ga_prop_id = getattr(settings, 'GOOGLE_ANALYTICS_PROPERTY_IDS',
                                     False).get(host[4:])
                which_urlspy = settings.MULTISITE_CMS_URLS.get(host[4:])

        if not settings.DEBUG and ga_prop_id:
            return_dict['GOOGLE_ANALYTICS_PROPERTY_ID'] = ga_prop_id
        if which_urlspy:
            if which_urlspy.endswith("multi"):
                return_dict['IS_TENANT_SITE'] = True

    return return_dict