from django.conf import settings
from django.urls import reverse, NoReverseMatch
from django.views import generic


class RootView(generic.TemplateView):
    template_name = 'dav_base/root.html'

    def get_context_data(self, **kwargs):
        c = super().get_context_data(**kwargs)
        root_urls = []
        for module_meta_obj in settings.MODULE_CONFIG.modules.values():
            root_url_name = 'root'
            if module_meta_obj.url_namespace:
                root_url_name = '%s:%s' % (module_meta_obj.url_namespace, root_url_name)
            try:
                reverse(root_url_name)
                root_urls.append((module_meta_obj.package, root_url_name))
            except NoReverseMatch:
                pass

        c['root_urls'] = root_urls
        return c