Add addon_data method for presenting addon data properties

ee/app/helpers/subscriptions_helper.rb

@@ -16,6 +16,14 @@ module SubscriptionsHelper
     }
   end
 
+  def addon_data(group)
+    {
+      group_data: [present_group(group)].to_json,
+      namespace_id: params[:namespace_id],
+      source: params[:source]
+    }
+  end
+
   def plan_title
     strong_memoize(:plan_title) do
       plan = subscription_available_plans.find { |plan| plan[:id] == params[:plan_id] }
@@ -45,13 +53,15 @@ module SubscriptionsHelper
   end
 
   def present_groups(groups)
-    groups.map do |namespace|
-      {
-        id: namespace.id,
-        name: namespace.name,
-        users: namespace.member_count,
-        guests: namespace.guest_count
-      }
-    end
+    groups.map { |namespace| present_group(namespace) }
+  end
+
+  def present_group(namespace)
+    {
+      id: namespace.id,
+      name: namespace.name,
+      users: namespace.member_count,
+      guests: namespace.guest_count
+    }
   end
 end

ee/app/views/subscriptions/buy_minutes.html.haml

 - page_title _('Buy CI Minutes')
 
-#js-buy-minutes{ data: subscription_data(@eligible_groups) }
+#js-buy-minutes{ data: addon_data(@group) }

ee/spec/helpers/subscriptions_helper_spec.rb

@@ -132,4 +132,21 @@ RSpec.describe SubscriptionsHelper do
       it { is_expected.to eq(nil) }
     end
   end
+
+  describe '#addon_data' do
+    subject(:addon_data) { helper.addon_data(group) }
+
+    let_it_be(:user) { create(:user, name: 'First Last') }
+    let_it_be(:group) { create(:group, name: 'My Namespace') }
+
+    before do
+      allow(helper).to receive(:current_user).and_return(user)
+      allow(helper).to receive(:params).and_return({ namespace_id: group.id.to_s, source: 'some_source' })
+      group.add_owner(user)
+    end
+
+    it { is_expected.to include(namespace_id: group.id.to_s) }
+    it { is_expected.to include(source: 'some_source') }
+    it { is_expected.to include(group_data: %Q{[{"id":#{group.id},"name":"My Namespace","users":1,"guests":0}]}) }
+  end
 end