Record when namespace created a subscription

This adds the first action for namespace onboarding, where we record
when a namespace created a new subscription.

app/models/namespace_onboarding_action.rb

@@ -2,4 +2,20 @@
 
 class NamespaceOnboardingAction < ApplicationRecord
   belongs_to :namespace
+
+  ACTIONS = {
+    subscription_created: 1
+  }.freeze
+
+  enum action: ACTIONS
+
+  class << self
+    def completed?(namespace, action)
+      where(namespace: namespace, action: action).exists?
+    end
+
+    def create_action(namespace, action)
+      NamespaceOnboardingAction.safe_find_or_create_by(namespace: namespace, action: action)
+    end
+  end
 end

ee/app/services/subscriptions/create_service.rb

@@ -22,7 +22,11 @@ module Subscriptions
       billing_email = customer_data[:email]
       token = customer_data[:authentication_token]
 
-      client.create_subscription(create_subscription_params, billing_email, token)
+      response = client.create_subscription(create_subscription_params, billing_email, token)
+
+      NamespaceOnboardingAction.create_action(@group, :subscription_created) if response[:success]
+
+      response
     end
 
     private

ee/spec/services/subscriptions/create_service_spec.rb

@@ -49,7 +49,11 @@ RSpec.describe Subscriptions::CreateService do
       end
 
       it 'creates a subscription with the returned authentication token' do
-        expect(client).to receive(:create_subscription).with(anything, customer_email, 'token')
+        expect(client)
+          .to receive(:create_subscription)
+          .with(anything, customer_email, 'token')
+          .and_return(success: true, data: { success: true, subscription_id: 'xxx' })
+
         subject.execute
       end
 
@@ -61,6 +65,12 @@ RSpec.describe Subscriptions::CreateService do
         it 'returns the response hash' do
           expect(subject.execute).to eq(success: false, data: { errors: 'failed to create subscription' })
         end
+
+        it 'does not create a namespace onboarding action' do
+          subject.execute
+
+          expect(NamespaceOnboardingAction.completed?(group, :subscription_created)).to eq(false)
+        end
       end
 
       context 'when successfully creating a subscription' do
@@ -91,6 +101,12 @@ RSpec.describe Subscriptions::CreateService do
 
         subject.execute
       end
+
+      it 'creates a namespace onboarding action' do
+        subject.execute
+
+        expect(NamespaceOnboardingAction.completed?(group, :subscription_created)).to eq(true)
+      end
     end
   end
 end

spec/factories/namespace_onboarding_actions.rb

+# frozen_string_literal: true
+
+FactoryBot.define do
+  factory :namespace_onboarding_action do
+    namespace
+    action { :subscription_created }
+  end
+end

spec/models/namespace_onboarding_action_spec.rb

@@ -3,5 +3,45 @@
 require 'spec_helper'
 
 RSpec.describe NamespaceOnboardingAction do
+  let(:namespace) { build(:namespace) }
+
   it { is_expected.to belong_to :namespace }
+
+  describe '.completed?' do
+    let(:action) { :subscription_created }
+
+    subject { described_class.completed?(namespace, action) }
+
+    context 'action created for the namespace' do
+      before do
+        create(:namespace_onboarding_action, namespace: namespace, action: action)
+      end
+
+      it { is_expected.to eq(true) }
+    end
+
+    context 'action created for another namespace' do
+      before do
+        create(:namespace_onboarding_action, namespace: build(:namespace), action: action)
+      end
+
+      it { is_expected.to eq(false) }
+    end
+  end
+
+  describe '.create_action' do
+    let(:action) { :subscription_created }
+
+    subject(:create_action) { described_class.create_action(namespace, action) }
+
+    it 'creates the action for the namespace just once' do
+      expect { create_action }.to change { count_namespace_actions }.by(1)
+
+      expect { create_action }.to change { count_namespace_actions }.by(0)
+    end
+
+    def count_namespace_actions
+      described_class.where(namespace: namespace, action: action).count
+    end
+  end
 end