Pass group data to frontend subscriptions app

Pass group data to the frontend subscriptions app
for allowing existing users to choose earlier created
groups to apply licenses to.

ee/app/helpers/subscriptions_helper.rb

@@ -9,7 +9,8 @@ module SubscriptionsHelper
       full_name: current_user.name,
       plan_data: plan_data.to_json,
       plan_id: params[:plan_id],
-      new_user: new_user?.to_s
+      new_user: new_user?.to_s,
+      group_data: group_data.to_json
     }
   end
 
@@ -34,4 +35,14 @@ module SubscriptionsHelper
       .reject { |plan| plan[:free] }
       .map { |plan| plan.slice(:id, :code, :price_per_year) }
   end
+
+  def group_data
+    current_user.free_namespaces.map do |namespace|
+      {
+        id: namespace.id,
+        name: namespace.name,
+        users: namespace.member_count
+      }
+    end
+  end
 end

ee/app/models/ee/user.rb

@@ -240,6 +240,10 @@ module EE
         .any?
     end
 
+    def free_namespaces
+      authorized_groups.with_counts(archived: false).where(plan: [nil, Plan.free, Plan.default]).order(:name)
+    end
+
     override :has_current_license?
     def has_current_license?
       License.current.present?

ee/spec/factories/plans.rb

@@ -3,12 +3,15 @@
 # EE-only
 FactoryBot.define do
   factory :plan do
-    factory :default_plan do
-      name { Plan::DEFAULT }
-      title { name.titleize }
+    Plan::DEFAULT_PLANS.each do |plan|
+      factory :"#{plan}_plan" do
+        name { plan }
+        title { name.titleize }
+        initialize_with { Plan.find_or_create_by(name: plan) }
+      end
     end
 
-    EE::Namespace::PLANS.each do |plan|
+    Plan::ALL_HOSTED_PLANS.each do |plan|
       factory :"#{plan}_plan" do
         name { plan }
         title { name.titleize }

ee/spec/helpers/subscriptions_helper_spec.rb

@@ -28,9 +28,11 @@ describe SubscriptionsHelper do
 
   describe '#subscription_data' do
     let_it_be(:user) { create(:user, setup_for_company: nil, name: 'First Last') }
+    let_it_be(:group) { create(:group, name: 'My Namespace') }
 
     before do
       allow(helper).to receive(:current_user).and_return(user)
+      group.add_owner(user)
     end
 
     subject { helper.subscription_data }
@@ -39,6 +41,7 @@ describe SubscriptionsHelper do
     it { is_expected.to include(full_name: 'First Last') }
     it { is_expected.to include(plan_data: '[{"id":"bronze_id","code":"bronze","price_per_year":48.0}]') }
     it { is_expected.to include(plan_id: 'bronze_id') }
+    it { is_expected.to include(group_data: %Q{[{"id":#{group.id},"name":"My Namespace","users":1}]}) }
 
     describe 'new_user' do
       where(:referer, :expected_result) do

ee/spec/models/user_spec.rb

@@ -905,4 +905,34 @@ describe User do
       end
     end
   end
+
+  describe '#free_namespaces' do
+    let_it_be(:user) { create(:user, :external) }
+    let_it_be(:licensed_group) { create(:group, plan: :bronze_plan) }
+    let_it_be(:free_group_z) { create(:group, plan: :default_plan, name: 'Z') }
+    let_it_be(:free_group_a) { create(:group, plan: :default_plan, name: 'A') }
+
+    subject { user.free_namespaces }
+
+    context 'user with no groups' do
+      it { is_expected.to eq [] }
+    end
+
+    context 'member of a licensed group' do
+      before do
+        licensed_group.add_guest(user)
+      end
+
+      it { is_expected.not_to include licensed_group }
+    end
+
+    context 'member of 2 free groups' do
+      before do
+        free_group_a.add_guest(user)
+        free_group_z.add_guest(user)
+      end
+
+      it { is_expected.to eq [free_group_a, free_group_z] }
+    end
+  end
 end