✨(backend) refactor indexation signals and fix circular import issues

Signed-off-by: Fabre Florian <ffabre@hybird.org>

src/backend/core/tests/test_models_documents.py

@@ -3,11 +3,11 @@ Unit tests for the Document model
 """
 # pylint: disable=too-many-lines
 
-from operator import itemgetter
 import random
 import smtplib
 import time
 from logging import Logger
+from operator import itemgetter
 from unittest import mock
 
 from django.contrib.auth.models import AnonymousUser
@@ -1651,13 +1651,13 @@ def test_models_documents_post_save_indexer(mock_push, settings):
 
     indexer = FindDocumentIndexer()
 
-    assert sorted(data, key=itemgetter('id')) == sorted(
+    assert sorted(data, key=itemgetter("id")) == sorted(
         [
             indexer.serialize_document(doc1, accesses),
             indexer.serialize_document(doc2, accesses),
             indexer.serialize_document(doc3, accesses),
         ],
-        key=itemgetter('id'),
+        key=itemgetter("id"),
     )
 
     # The debounce counters should be reset

src/backend/core/tests/test_services_search_indexers.py

@@ -36,7 +36,6 @@ class FakeDocumentIndexer(BaseDocumentIndexer):
         return {}
 
 
-
 @pytest.fixture(name="fake_indexer_settings")
 def fake_indexer_settings_fixture(settings):
     """Fixture to switch the indexer to the FakeDocumentIndexer."""
@@ -103,6 +102,7 @@ def test_services_search_indexer_class(fake_indexer_settings):
         "core.tests.test_services_search_indexers.FakeDocumentIndexer"
     )
 
+
 def test_services_search_indexer_url_is_none(settings):
     """
     Indexer should raise RuntimeError if SEARCH_INDEXER_URL is None or empty.