from __future__ import absolute_import

from django.db.models.signals import post_save, pre_delete, post_delete
from django.dispatch import receiver
from django.utils.translation import ugettext_lazy as _

from documents.models import Document
from main.api import register_maintenance_links
from metadata.models import DocumentMetadata
from navigation.api import register_links, register_top_menu
from project_setup.api import register_setup
from rest_api.classes import APIEndPoint

from .api import update_indexes, delete_indexes
from .links import (document_index_list, document_index_main_menu_link,
                    index_parent, index_setup, index_setup_create,
                    index_setup_document_types, index_setup_delete,
                    index_setup_edit, index_setup_list, index_setup_view,
                    rebuild_index_instances, template_node_create,
                    template_node_delete, template_node_edit)
from .models import Index, IndexTemplateNode, IndexInstanceNode
from .urls import api_urls


@receiver(pre_delete, dispatch_uid='document_index_delete', sender=Document)
def document_index_delete(sender, **kwargs):
    delete_indexes(kwargs['instance'])


@receiver(post_save, dispatch_uid='document_metadata_index_update', sender=DocumentMetadata)
def document_metadata_index_update(sender, **kwargs):
    delete_indexes(kwargs['instance'].document)
    update_indexes(kwargs['instance'].document)


@receiver(pre_delete, dispatch_uid='document_metadata_index_delete', sender=DocumentMetadata)
def document_metadata_index_delete(sender, **kwargs):
    delete_indexes(kwargs['instance'].document)


@receiver(post_delete, dispatch_uid='document_metadata_index_post_delete', sender=DocumentMetadata)
def document_metadata_index_post_delete(sender, **kwargs):
    update_indexes(kwargs['instance'].document)


register_maintenance_links([rebuild_index_instances], namespace='document_indexing', title=_(u'Indexes'))

register_links(Document, [document_index_list], menu_name='form_header')
register_links([Index, 'indexing:index_setup_list', 'indexing:index_setup_create', 'indexing:template_node_edit', 'indexing:template_node_delete'], [index_setup_list, index_setup_create], menu_name='secondary_menu')
register_links(Index, [index_setup_edit, index_setup_delete, index_setup_view, index_setup_document_types])
register_links(IndexInstanceNode, [index_parent])
register_links(IndexTemplateNode, [template_node_create, template_node_edit, template_node_delete])

register_setup(index_setup)

register_top_menu('indexes', document_index_main_menu_link)

endpoint = APIEndPoint('indexes')
endpoint.register_urls(api_urls)
endpoint.add_endpoint('index-list', _(u'Returns a list of all the indexes.'))