from __future__ import absolute_import, unicode_literals

import logging
import tempfile

from django import apps
from django.conf import settings
from django.contrib.auth.signals import user_logged_in
from django.db.models.signals import post_migrate, post_save
from django.utils.translation import ugettext_lazy as _

from common import settings as common_settings

from .handlers import (
    user_locale_profile_session_config, user_locale_profile_create
)
from .links import (
    link_about, link_admin_site, link_current_user_details,
    link_current_user_edit, link_current_user_locale_profile_details,
    link_current_user_locale_profile_edit, link_license,
    link_maintenance_menu, link_setup, link_tools
)
from .menus import (
    menu_facet, menu_main, menu_secondary, menu_setup, menu_tools
)
from .models import AnonymousUserSingleton
from .settings import TEMPORARY_DIRECTORY
from .utils import validate_path

logger = logging.getLogger(__name__)


def create_anonymous_user(sender, **kwargs):
    AnonymousUserSingleton.objects.get_or_create()


class CommonApp(apps.AppConfig):
    name = 'common'
    verbose_name = _('Common')

    def ready(self):
        menu_facet.bind_links(links=[link_current_user_details, link_current_user_locale_profile_details, link_tools, link_setup], sources=['common:current_user_details', 'common:current_user_edit', 'common:current_user_locale_profile_details', 'common:current_user_locale_profile_edit', 'authentication:password_change_view', 'common:setup_list', 'common:tools_list'])
        menu_main.bind_links(links=[link_about], position=-1)
        menu_secondary.bind_links(
            links=[link_about, link_license],
            sources=['common:about_view', 'common:license_view']
        )
        menu_secondary.bind_links(
            links=[
                link_current_user_edit, link_current_user_locale_profile_edit
            ],
            sources=['common:current_user_details', 'common:current_user_edit', 'common:current_user_locale_profile_details', 'common:current_user_locale_profile_edit', 'authentication:password_change_view', 'common:setup_list', 'common:tools_list']
        )
        menu_setup.bind_links(links=[link_admin_site])
        menu_tools.bind_links(links=[link_maintenance_menu])

        post_migrate.connect(create_anonymous_user, dispatch_uid='create_anonymous_user', sender=self)
        user_logged_in.connect(user_locale_profile_session_config, dispatch_uid='user_locale_profile_session_config', sender=settings.AUTH_USER_MODEL)
        post_save.connect(user_locale_profile_create, dispatch_uid='user_locale_profile_create', sender=settings.AUTH_USER_MODEL)

        if (not validate_path(TEMPORARY_DIRECTORY)) or (not TEMPORARY_DIRECTORY):
            setattr(common_settings, 'TEMPORARY_DIRECTORY', tempfile.mkdtemp())