[FR][DAC] Import Rules Verbose Message (#4093)

* Draft Verbose Message

* Fix Linting

* Made more descriptive

* Updated for readability

detection_rules/kbwrap.py

@@ -94,28 +94,9 @@ def kibana_import_rules(ctx: click.Context, rules: RuleCollection, overwrite: Op
                         overwrite_exceptions: Optional[bool] = False,
                         overwrite_action_connectors: Optional[bool] = False) -> (dict, List[RuleResource]):
     """Import custom rules into Kibana."""
-    kibana = ctx.obj['kibana']
-    rule_dicts = [r.contents.to_api_format() for r in rules]
-    with kibana:
-        cl = GenericCollection.default()
-        exception_dicts = [
-            d.contents.to_api_format() for d in cl.items if isinstance(d.contents, TOMLExceptionContents)
-        ]
-        action_connectors_dicts = [
-            d.contents.to_api_format() for d in cl.items if isinstance(d.contents, TOMLActionConnectorContents)
-        ]
-        response, successful_rule_ids, results = RuleResource.import_rules(
-            rule_dicts,
-            exception_dicts,
-            action_connectors_dicts,
-            overwrite=overwrite,
-            overwrite_exceptions=overwrite_exceptions,
-            overwrite_action_connectors=overwrite_action_connectors
-        )
-
-    def handle_response_errors(response: dict):
+    def _handle_response_errors(response: dict):
         """Handle errors from the import response."""
-        def parse_list_id(s: str):
+        def _parse_list_id(s: str):
             """Parse the list ID from the error message."""
             match = re.search(r'list_id: "(.*?)"', s)
             return match.group(1) if match else None
@@ -132,7 +113,7 @@ def parse_list_id(s: str):
             click.echo(f' - {error["rule_id"]}: ({error["error"]["status_code"]}) {error["error"]["message"]}')
 
             if "references a non existent exception list" in error["error"]["message"]:
-                list_id = parse_list_id(error["error"]["message"])
+                list_id = _parse_list_id(error["error"]["message"])
                 if list_id in all_exception_list_ids:
                     workaround_errors.append(error["rule_id"])
 
@@ -144,12 +125,42 @@ def parse_list_id(s: str):
             click.echo(' '.join(f'-id {rule_id}' for rule_id in workaround_errors))
             click.echo()
 
+    def _process_imported_items(imported_items_list, item_type_description, item_key):
+        """Displays appropriately formatted success message that all items imported successfully."""
+        all_ids = {item[item_key] for sublist in imported_items_list for item in sublist}
+        if all_ids:
+            click.echo(f'{len(all_ids)} {item_type_description} successfully imported')
+            ids_str = '\n - '.join(all_ids)
+            click.echo(f' - {ids_str}')
+
+    kibana = ctx.obj['kibana']
+    rule_dicts = [r.contents.to_api_format() for r in rules]
+    with kibana:
+        cl = GenericCollection.default()
+        exception_dicts = [
+            d.contents.to_api_format() for d in cl.items if isinstance(d.contents, TOMLExceptionContents)
+        ]
+        action_connectors_dicts = [
+            d.contents.to_api_format() for d in cl.items if isinstance(d.contents, TOMLActionConnectorContents)
+        ]
+        response, successful_rule_ids, results = RuleResource.import_rules(
+            rule_dicts,
+            exception_dicts,
+            action_connectors_dicts,
+            overwrite=overwrite,
+            overwrite_exceptions=overwrite_exceptions,
+            overwrite_action_connectors=overwrite_action_connectors
+        )
+
     if successful_rule_ids:
         click.echo(f'{len(successful_rule_ids)} rule(s) successfully imported')
         rule_str = '\n - '.join(successful_rule_ids)
         click.echo(f' - {rule_str}')
     if response['errors']:
-        handle_response_errors(response)
+        _handle_response_errors(response)
+    else:
+        _process_imported_items(exception_dicts, 'exception list(s)', 'list_id')
+        _process_imported_items(action_connectors_dicts, 'action connector(s)', 'id')
 
     return response, results