Add `ParentNotifier` service

This is a takeoff on `ParentImportNotifier`. I just copied over the
class and spec and generalised the service to work with `Import`-style
interfaces. We can now use the same notifier service class for both
imports and compliance check sets.

Refs #4758

1 files changed, 19 insertions, 0 deletions

diff --git a/app/services/parent_notifier.rb b/app/services/parent_notifier.rb
new file mode 100644
index 000000000..653c98aff
--- /dev/null
+++ b/app/services/parent_notifier.rb
@@ -0,0 +1,19 @@
+class ParentNotifier
+  def initialize(klass)
+    @klass = klass
+  end
+
+  def notify_when_finished(collection = nil)
+    collection ||= objects_pending_notification
+    collection.each(&:notify_parent)
+  end
+
+  def objects_pending_notification
+    @klass
+      .where(
+        notified_parent_at: nil,
+        status: @klass.finished_statuses
+      )
+      .where.not(parent: nil)
+  end
+end