Make dependency injection configuration more readable

src/ctp_slack_bot/containers.py

@@ -36,21 +36,56 @@ __load_plugins("ctp_slack_bot/mime_type_handlers")
 
 class Container(DeclarativeContainer): # TODO: audit for potential async-related bugs.
     settings = Singleton(Settings)
-    event_brokerage_service = Singleton(EventBrokerageService)
-    schedule_service = Resource(ScheduleServiceResource, settings=settings)
-    mongo_db = Resource(MongoDBResource, settings=settings) # TODO: generalize to any database.
-    vectorized_chunk_repository = Resource(MongoVectorizedChunkRepositoryResource, settings=settings, mongo_db=mongo_db)
-    vector_database_service = Singleton(VectorDatabaseService, settings=settings, vectorized_chunk_repository=vectorized_chunk_repository)
-    embeddings_model_service = Singleton(EmbeddingsModelService, settings=settings)
-    vectorization_service = Singleton(VectorizationService, settings=settings, embeddings_model_service=embeddings_model_service)
-    content_ingestion_service = Singleton(ContentIngestionService, settings=settings, event_brokerage_service=event_brokerage_service, vector_database_service=vector_database_service, vectorization_service=vectorization_service)
-    context_retrieval_service = Singleton(ContextRetrievalService, settings=settings, vectorization_service=vectorization_service, vector_database_service=vector_database_service)
-    language_model_service = Singleton(LanguageModelService, settings=settings)
-    answer_retrieval_service = Singleton(AnswerRetrievalService, settings=settings, event_brokerage_service=event_brokerage_service, language_model_service=language_model_service)
-    question_dispatch_service = Singleton(QuestionDispatchService, settings=settings, event_brokerage_service=event_brokerage_service, content_ingestion_service=content_ingestion_service, context_retrieval_service=context_retrieval_service, answer_retrieval_service=answer_retrieval_service)
-    slack_bolt_app = Singleton(AsyncApp, token=settings.provided.SLACK_BOT_TOKEN().get_secret_value())
-    slack_service = Resource(SlackServiceResource, event_brokerage_service=event_brokerage_service, slack_bolt_app=slack_bolt_app)
-    socket_mode_handler = Singleton(lambda _, app, app_token: AsyncSocketModeHandler(app, app_token), slack_service, slack_bolt_app, settings.provided.SLACK_APP_TOKEN().get_secret_value())
-    mime_type_handler_factory = Callable(lambda mime_type: MimeTypeHandlerMeta._registry[mime_type]())
-    google_drive_service = Singleton(GoogleDriveService, settings=settings)
-    # file_monitor_service = Singleton(FileMonitorService, settings=settings, google_drive_service=google_drive_service, mime_type_handler_factory=mime_type_handler_factory)
+    event_brokerage_service     = Singleton(EventBrokerageService)
+    schedule_service            = Resource (ScheduleServiceResource,
+                                            settings=settings)
+    mongo_db                    = Resource (MongoDBResource, # TODO: generalize to any database.
+                                            settings=settings)
+    vectorized_chunk_repository = Resource (MongoVectorizedChunkRepositoryResource,
+                                            settings=settings,
+                                            mongo_db=mongo_db)
+    vector_database_service     = Singleton(VectorDatabaseService,
+                                            settings=settings,
+                                            vectorized_chunk_repository=vectorized_chunk_repository)
+    embeddings_model_service    = Singleton(EmbeddingsModelService,
+                                            settings=settings)
+    vectorization_service       = Singleton(VectorizationService,
+                                            settings=settings,
+                                            embeddings_model_service=embeddings_model_service)
+    content_ingestion_service   = Singleton(ContentIngestionService,
+                                            settings=settings,
+                                            event_brokerage_service=event_brokerage_service,
+                                            vector_database_service=vector_database_service,
+                                            vectorization_service=vectorization_service)
+    context_retrieval_service   = Singleton(ContextRetrievalService,
+                                            settings=settings,
+                                            vectorization_service=vectorization_service,
+                                            vector_database_service=vector_database_service)
+    language_model_service      = Singleton(LanguageModelService,
+                                            settings=settings)
+    answer_retrieval_service    = Singleton(AnswerRetrievalService,
+                                            settings=settings,
+                                            event_brokerage_service=event_brokerage_service,
+                                            language_model_service=language_model_service)
+    question_dispatch_service   = Singleton(QuestionDispatchService,
+                                            settings=settings,
+                                            event_brokerage_service=event_brokerage_service,
+                                            content_ingestion_service=content_ingestion_service,
+                                            context_retrieval_service=context_retrieval_service,
+                                            answer_retrieval_service=answer_retrieval_service)
+    slack_bolt_app              = Singleton(lambda settings: AsyncApp(token=settings.SLACK_BOT_TOKEN.get_secret_value()),
+                                            settings)
+    slack_service               = Resource (SlackServiceResource,
+                                            event_brokerage_service=event_brokerage_service,
+                                            slack_bolt_app=slack_bolt_app)
+    socket_mode_handler         = Singleton(lambda _, app, settings: AsyncSocketModeHandler(app, settings.SLACK_APP_TOKEN.get_secret_value()),
+                                            slack_service,
+                                            slack_bolt_app,
+                                            settings)
+    mime_type_handler_factory   = Callable (lambda mime_type: MimeTypeHandlerMeta._registry[mime_type]())
+    google_drive_service        = Singleton(GoogleDriveService,
+                                            settings=settings)
+    # file_monitor_service        = Singleton(FileMonitorService,
+    #                                         settings=settings,
+    #                                         google_drive_service=google_drive_service,
+    #                                         mime_type_handler_factory=mime_type_handler_factory)