from __future__ import unicode_literals

from django.apps import apps
from django.utils.translation import ugettext_lazy as _

from acls import ModelPermission
from acls.links import link_acl_list
from acls.permissions import permission_acl_edit, permission_acl_view

from common import (
    MayanAppConfig, menu_multi_item, menu_object, menu_secondary, menu_setup
)
from common.signals import perform_upgrade

from .handlers import purge_permissions
from .links import (
    link_group_roles, link_permission_grant, link_permission_revoke,
    link_role_create, link_role_delete, link_role_edit, link_role_groups,
    link_role_list, link_role_permissions
)
from .permissions import (
    permission_role_delete, permission_role_edit, permission_role_view
)
from .search import *  # NOQA


class PermissionsApp(MayanAppConfig):
    has_rest_api = True
    has_tests = True
    name = 'permissions'
    verbose_name = _('Permissions')

    def ready(self):
        super(PermissionsApp, self).ready()

        Role = self.get_model('Role')
        Group = apps.get_model(app_label='auth', model_name='Group')

        ModelPermission.register(
            model=Role, permissions=(
                permission_acl_edit, permission_acl_view,
                permission_role_delete, permission_role_edit,
                permission_role_view
            )
        )

        menu_object.bind_links(
            links=(link_group_roles,), position=98, sources=(Group,)
        )
        menu_object.bind_links(
            links=(
                link_role_edit, link_role_groups, link_role_permissions,
                link_acl_list, link_role_delete
            ), sources=(Role,)
        )
        menu_multi_item.bind_links(
            links=(link_permission_grant, link_permission_revoke),
            sources=('permissions:role_permissions',)
        )
        menu_secondary.bind_links(
            links=(link_role_list, link_role_create),
            sources=(Role, 'permissions:role_create', 'permissions:role_list')
        )
        menu_setup.bind_links(links=(link_role_list,))

        perform_upgrade.connect(
            purge_permissions, dispatch_uid='purge_permissions'
        )