Disable remove group button if the group has a subscription

Display info box explaining the subscription needs to be unlinked first

app/models/namespace.rb

@@ -343,6 +343,10 @@ class Namespace < ApplicationRecord
     Plan.default
   end
 
+  def paid?
+    root? && actual_plan.paid?
+  end
+
   def actual_limits
     # We default to PlanLimits.new otherwise a lot of specs would fail
     # On production each plan should already have associated limits record

app/views/groups/settings/_permanent_deletion.html.haml

@@ -5,4 +5,5 @@
       = _('Removing this group also removes all child projects, including archived projects, and their resources.')
       %br
       %strong= _('Removed group can not be restored!')
-    = button_to _('Remove group'), '#', class: 'btn gl-button btn-danger js-confirm-danger', data: { 'confirm-danger-message' => remove_group_message(group) }
+
+    = render 'groups/settings/remove_button', group: group

app/views/groups/settings/_remove_button.html.haml

+- if group.paid?
+  .gl-alert.gl-alert-info.gl-mb-5{ data: { testid: 'group-has-linked-subscription-alert' } }
+    = sprite_icon('information-o', size: 16, css_class: 'gl-icon gl-alert-icon gl-alert-icon-no-title')
+    .gl-alert-body
+      = html_escape(_("This group can't be removed because it is linked to a subscription. To remove this group, %{linkStart}link the subscription%{linkEnd} with a different group.")) % { linkStart: "<a href=\"#{help_page_path('subscriptions/index', anchor: 'change-the-linked-namespace')}\">".html_safe, linkEnd: '</a>'.html_safe }
+
+= button_to _('Remove group'), '#', class: ['btn gl-button btn-danger js-confirm-danger', ('disabled' if group.paid?)], data: { 'confirm-danger-message' => remove_group_message(group), 'testid' => 'remove-group-button' }

ee/app/controllers/ee/groups_controller.rb

@@ -11,6 +11,7 @@ module EE
       alias_method :ee_authorize_admin_group!, :authorize_admin_group!
 
       before_action :ee_authorize_admin_group!, only: [:restore]
+      before_action :check_subscription!, only: [:destroy]
 
       feature_category :subgroups, [:restore]
     end
@@ -58,6 +59,14 @@ module EE
 
     private
 
+    def check_subscription!
+      if group.paid?
+        redirect_to edit_group_path(group),
+          status: :found,
+          alert: _('This group is linked to a subscription')
+      end
+    end
+
     def group_params_ee
       [
         :membership_lock,

ee/app/views/groups/settings/_adjourned_deletion.html.haml

@@ -10,4 +10,4 @@
       %li= _("The group will be placed in 'pending removal' state")
       %li= _("The group can be fully restored")
 
-    = button_to _('Remove group'), '#', class: 'gl-button btn btn-danger js-confirm-danger', data: { 'confirm-danger-message' => remove_group_message(group) }
+    = render 'groups/settings/remove_button', group: group

ee/changelogs/unreleased/prevent-delete-groups-with-subscription.yml

+---
+title: Prevent deletion of groups with a subscription
+merge_request: 57170
+author:
+type: fixed

ee/spec/models/ee/namespace_spec.rb

@@ -768,6 +768,22 @@ RSpec.describe Namespace do
     end
   end
 
+  describe '#paid?' do
+    it 'returns true for a root namespace with a paid plan' do
+      create(:gitlab_subscription, :ultimate, namespace: namespace)
+
+      expect(namespace.paid?).to eq(true)
+    end
+
+    it 'returns false for a subgroup of a group with a paid plan' do
+      group = create(:group)
+      subgroup = create(:group, parent: group)
+      create(:gitlab_subscription, :ultimate, namespace: group)
+
+      expect(subgroup.paid?).to eq(false)
+    end
+  end
+
   describe '#actual_plan_name' do
     context 'when namespace does not have a subscription associated' do
       it 'returns default plan' do

ee/spec/requests/groups_controller_spec.rb

@@ -334,4 +334,30 @@ RSpec.describe GroupsController, type: :request do
       end
     end
   end
+
+  describe 'DELETE #destroy' do
+    before do
+      group.add_owner(user)
+      login_as(user)
+    end
+
+    it 'does not delete a group with a gitlab.com subscription' do
+      create(:gitlab_subscription, :ultimate, namespace: group)
+
+      Sidekiq::Testing.fake! do
+        expect { delete(group_path(group)) }.not_to change(GroupDestroyWorker.jobs, :size)
+        expect(response).to redirect_to(edit_group_path(group))
+      end
+    end
+
+    it 'deletes a subgroup with a parent group with a gitlab.com subscription' do
+      create(:gitlab_subscription, :ultimate, namespace: group)
+      subgroup = create(:group, parent: group)
+
+      Sidekiq::Testing.fake! do
+        expect { delete(group_path(subgroup)) }.to change(GroupDestroyWorker.jobs, :size).by(1)
+        expect(response).to redirect_to(root_path)
+      end
+    end
+  end
 end

ee/spec/views/groups/settings/_remove.html.haml_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'groups/settings/_remove.html.haml' do
+  describe 'render' do
+    let(:group) { create(:group) }
+
+    it 'enables the Remove group button and does not show an alert for a group' do
+      render 'groups/settings/remove', group: group
+
+      expect(rendered).to have_selector '[data-testid="remove-group-button"]'
+      expect(rendered).not_to have_selector '[data-testid="remove-group-button"].disabled'
+      expect(rendered).not_to have_selector '[data-testid="group-has-linked-subscription-alert"]'
+    end
+
+    it 'disables the Remove group button and shows an alert for a group with a paid gitlab.com plan' do
+      create(:gitlab_subscription, :ultimate, namespace: group)
+
+      render 'groups/settings/remove', group: group
+
+      expect(rendered).to have_selector '[data-testid="remove-group-button"].disabled'
+      expect(rendered).to have_selector '[data-testid="group-has-linked-subscription-alert"]'
+    end
+
+    it 'disables the Remove group button and shows an alert for a group with a legacy paid gitlab.com plan' do
+      create(:gitlab_subscription, :gold, namespace: group)
+
+      render 'groups/settings/remove', group: group
+
+      expect(rendered).to have_selector '[data-testid="remove-group-button"].disabled'
+      expect(rendered).to have_selector '[data-testid="group-has-linked-subscription-alert"]'
+    end
+
+    it 'enables the Remove group button and does not show an alert for a subgroup' do
+      create(:gitlab_subscription, :ultimate, namespace: group)
+      subgroup = create(:group, parent: group)
+
+      render 'groups/settings/remove', group: subgroup
+
+      expect(rendered).to have_selector '[data-testid="remove-group-button"]'
+      expect(rendered).not_to have_selector '[data-testid="remove-group-button"].disabled'
+      expect(rendered).not_to have_selector '[data-testid="group-has-linked-subscription-alert"]'
+    end
+
+    context 'when delayed deletes are enabled' do
+      before do
+        stub_licensed_features(adjourned_deletion_for_projects_and_groups: true)
+      end
+
+      it 'enables the Remove group button and does not show an alert for a group without a paid gitlab.com plan' do
+        render 'groups/settings/remove', group: group
+
+        expect(rendered).to have_selector '[data-testid="remove-group-button"]'
+        expect(rendered).not_to have_selector '[data-testid="remove-group-button"].disabled'
+        expect(rendered).not_to have_selector '[data-testid="group-has-linked-subscription-alert"]'
+      end
+
+      it 'disables the Remove group button and shows an alert for a group with a paid gitlab.com plan' do
+        create(:gitlab_subscription, :ultimate, namespace: group)
+
+        render 'groups/settings/remove', group: group
+
+        expect(rendered).to have_selector '[data-testid="remove-group-button"].disabled'
+        expect(rendered).to have_selector '[data-testid="group-has-linked-subscription-alert"]'
+      end
+
+      it 'enables the Remove group button and does not show an alert for a subgroup' do
+        create(:gitlab_subscription, :ultimate, namespace: group)
+        subgroup = create(:group, parent: group)
+
+        render 'groups/settings/remove', group: subgroup
+
+        expect(rendered).to have_selector '[data-testid="remove-group-button"]'
+        expect(rendered).not_to have_selector '[data-testid="remove-group-button"].disabled'
+        expect(rendered).not_to have_selector '[data-testid="group-has-linked-subscription-alert"]'
+      end
+    end
+  end
+end

locale/gitlab.pot

@@ -31001,6 +31001,9 @@ msgstr ""
 msgid "This group"
 msgstr ""
 
+msgid "This group can't be removed because it is linked to a subscription. To remove this group, %{linkStart}link the subscription%{linkEnd} with a different group."
+msgstr ""
+
 msgid "This group cannot be invited to a project inside a group with enforced SSO"
 msgstr ""
 
@@ -31010,6 +31013,9 @@ msgstr ""
 msgid "This group has been scheduled for permanent removal on %{date}"
 msgstr ""
 
+msgid "This group is linked to a subscription"
+msgstr ""
+
 msgid "This group, including all subgroups, projects and git repositories, will be reachable from only the specified IP address ranges."
 msgstr ""
 

spec/models/namespace_spec.rb

@@ -1437,6 +1437,12 @@ RSpec.describe Namespace do
     end
   end
 
+  describe '#paid?' do
+    it 'returns false for a root namespace with a free plan' do
+      expect(namespace.paid?).to eq(false)
+    end
+  end
+
   describe '#shared_runners_setting' do
     using RSpec::Parameterized::TableSyntax
 

spec/views/groups/settings/_remove.html.haml_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'groups/settings/_remove.html.haml' do
+  describe 'render' do
+    it 'enables the Remove group button for a group' do
+      group = build(:group)
+
+      render 'groups/settings/remove', group: group
+
+      expect(rendered).to have_selector '[data-testid="remove-group-button"]'
+      expect(rendered).not_to have_selector '[data-testid="remove-group-button"].disabled'
+      expect(rendered).not_to have_selector '[data-testid="group-has-linked-subscription-alert"]'
+    end
+  end
+end