Add job class to allow for one time in progress reminders (#12459)

modules/va_notify/app/models/va_notify/in_progress_reminders_sent.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+module VANotify
+  class InProgressRemindersSent < ApplicationRecord
+    self.table_name = 'va_notify_in_progress_reminders_sent'
+
+    belongs_to :user_account
+  end
+end

modules/va_notify/app/workers/va_notify/one_time_in_progress_reminder.rb

@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+require 'sidekiq'
+
+module VANotify
+  class OneTimeInProgressReminder
+    include Sidekiq::Worker
+
+    attr_reader :user_account_id, :form_name
+
+    def perform(user_account_id, form_name, template_id, personalisation)
+      @user_account_id = user_account_id
+      @form_name = form_name
+
+      return if user_already_notified?
+
+      user_account = UserAccount.find(user_account_id)
+
+      InProgressRemindersSent.create!(user_account_id:, form_id: form_name)
+      VANotify::IcnJob.perform_async(user_account.icn, template_id, personalisation)
+    end
+
+    private
+
+    def user_already_notified?
+      InProgressRemindersSent.find_by(user_account_id:, form_id: form_name)
+    end
+  end
+end

modules/va_notify/spec/workers/one_time_in_progress_reminder_spec.rb

@@ -0,0 +1,62 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+require 'sidekiq/testing'
+
+describe VANotify::OneTimeInProgressReminder, type: :worker do
+  describe '#perform' do
+    let(:user_account) { create(:user_account, icn:) }
+    let(:icn) { 'icn_here' }
+    let(:form_name) { 'some_form_name' }
+
+    context 'sends reminder' do
+      it 'delegates to IcnJob to send email' do
+        template_id = 'some_template_id'
+        personalisation = {
+          'some' => 'Fields',
+          'thing' => 'data'
+        }
+
+        allow(VANotify::IcnJob).to receive(:perform_async)
+
+        Sidekiq::Testing.inline! do
+          # only first round should kick off the IcnJob
+          described_class.perform_async(user_account.id, form_name, template_id, personalisation)
+          # subsequent invocations should do nothing
+          described_class.perform_async(user_account.id, form_name, template_id, personalisation)
+          described_class.perform_async(user_account.id, form_name, template_id, personalisation)
+        end
+
+        # this would fail if VANotify::IcnJob received multiple invocations
+        expect(VANotify::IcnJob).to have_received(:perform_async).with('icn_here', 'some_template_id', personalisation)
+      end
+    end
+
+    context 'does not send reminder' do
+      it 'if InProgressRemindersSent model already exists' do
+        VANotify::InProgressRemindersSent.create(form_id: form_name, user_account:)
+
+        allow(VANotify::IcnJob).to receive(:perform_async)
+
+        Sidekiq::Testing.inline! do
+          described_class.perform_async(user_account.id, form_name, nil, nil)
+        end
+
+        expect(VANotify::IcnJob).not_to have_received(:perform_async)
+      end
+
+      it 'if creating InProgressRemindersSent fails' do
+        allow(VANotify::InProgressRemindersSent).to receive(:create!).and_raise(ActiveRecord::RecordInvalid)
+        allow(VANotify::IcnJob).to receive(:perform_async)
+
+        expect do
+          Sidekiq::Testing.inline! do
+            described_class.perform_async(user_account.id, form_name, nil, nil)
+          end
+        end.to raise_error(ActiveRecord::RecordInvalid)
+
+        expect(VANotify::IcnJob).not_to have_received(:perform_async)
+      end
+    end
+  end
+end