Prettify billing plans section

Just a bunch of improvements for the billing plans section
like changing Bootstrap utility classes to GitLab UI and
fixing the issue with the free plan not being highlighted.

ee/app/assets/stylesheets/pages/billings.scss

@@ -21,10 +21,6 @@
 
 .billing-plans {
   .card {
-    &-header {
-      line-height: $gl-line-height-20;
-    }
-
     &-active {
       background-color: $gray-light;
     }

ee/app/helpers/billing_plans_helper.rb

@@ -48,9 +48,9 @@ module BillingPlansHelper
     plan.features.sort_by! { |feature| feature.highlight ? 0 : 1 }[0...4]
   end
 
-  def plan_purchase_or_upgrade_url(group, plan, current_plan)
+  def plan_purchase_or_upgrade_url(group, plan)
     if group.upgradable?
-      plan_upgrade_url(group, current_plan)
+      plan_upgrade_url(group, plan)
     else
       plan_purchase_url(group, plan)
     end

ee/app/views/shared/billings/_billing_plan.html.haml

 - purchase_link = plan.purchase_link
-- is_current_plan = plan.code == current_plan&.code
 
-.col-md-6.col-lg-3
-  .card.mb-5{ class: ("card-active" if is_current_plan) }
-    .card-header.font-weight-bold.p-3
+.card.h-100{ class: ("card-active" if is_current) }
+  .card-header.gl-font-weight-bold.d-flex.flex-row.justify-content-between.flex-wrap
+    %div
       = plan.name
-      - if is_current_plan
-        .float-right.text-muted
+    - if is_current
+      .text-muted
         = _("Current Plan")
 
   .card-body
@@ -14,28 +13,31 @@
       .gl-mr-2
         = number_to_plan_currency(plan.price_per_month)
 
-        %ul.conditions.p-0.my-auto
+      %ul.conditions.gl-p-0.gl-my-auto
         %li= s_("BillingPlans|per user")
         %li= s_("BillingPlans|monthly")
     .price-per-year.text-left{ class: ("invisible" unless plan.price_per_year > 0) }
       - price_per_year = number_to_plan_currency(plan.price_per_year)
       = s_("BillingPlans|billed annually at %{price_per_year}") % { price_per_year: price_per_year }
 
-      %hr.mt-3.mb-3
+    %hr.gl-my-3
 
     %ul.unstyled-list
       - plan_feature_short_list(plan).each do |feature|
-          %li.p-0{ class: ("font-weight-bold" if feature.highlight) }
+        - feature_class = "gl-p-0!"
+        - if feature.highlight
+          - feature_class += " gl-font-weight-bold"
+        %li{ class: "#{feature_class}" }
           = feature.title
-        %li.p-0.pt-3
+      %li.gl-p-0.gl-pt-3
         - if plan.about_page_href
           = link_to s_("BillingPlans|See all %{plan_name} features") % { plan_name: plan.name }, EE::SUBSCRIPTIONS_COMPARISON_URL
 
   - if purchase_link
-      .card-footer.p-3
-        .float-right{ class: ("invisible" unless purchase_link.action == 'upgrade' || is_current_plan) }
+    .card-footer
+      .float-right{ class: ("invisible" unless purchase_link.action == 'upgrade' || is_current) }
         - if show_contact_sales_button?(purchase_link.action)
           = link_to s_('BillingPlan|Contact sales'), "#{contact_sales_url}?test=inappcontactsales#{plan.code}", class: "btn btn-success-secondary gl-button", data: { **experiment_tracking_data_for_button_click('contact_sales') }
-          - upgrade_button_class = "disabled" if is_current_plan && !namespace.trial_active?
+        - upgrade_button_class = "disabled" if is_current && !namespace.trial_active?
         - cta_class = '-new' if use_new_purchase_flow?(namespace)
-          = link_to s_('BillingPlan|Upgrade'), plan_purchase_or_upgrade_url(namespace, plan, current_plan), class: "btn btn-success gl-button #{upgrade_button_class} billing-cta-purchase#{cta_class}", data: { **experiment_tracking_data_for_button_click('upgrade') }
+        = link_to s_('BillingPlan|Upgrade'), plan_purchase_or_upgrade_url(namespace, plan), class: "btn btn-success gl-button #{upgrade_button_class} billing-cta-purchase#{cta_class}", data: { **experiment_tracking_data_for_button_click('upgrade') }

ee/app/views/shared/billings/_billing_plans.html.haml

@@ -5,9 +5,12 @@
   = render 'shared/billings/billing_plan_header', namespace: namespace, plan: current_plan
 
 - if show_plans?(namespace)
-  .billing-plans.mt-5.row
+  .billing-plans.gl-mt-5.row
     - plans_data.each do |plan|
-      = render 'shared/billings/billing_plan', namespace: namespace, plan: plan, current_plan: current_plan
+      - is_default_plan = current_plan.nil? && plan.default?
+      - is_current = plan.code == current_plan&.code || is_default_plan
+      .col-md-6.col-lg-3.gl-mb-5
+        = render 'shared/billings/billing_plan', namespace: namespace, plan: plan, is_current: is_current
 
 - if namespace.gitlab_subscription&.has_a_paid_hosted_plan?
   .center.gl-mb-7

ee/changelogs/unreleased/vs-ee-prettify-billings-cards.yml

+---
+title: Prettify billing plans section
+merge_request: 48008
+author:
+type: other

ee/spec/helpers/billing_plans_helper_spec.rb

@@ -147,4 +147,24 @@ RSpec.describe BillingPlansHelper do
       end
     end
   end
+
+  describe "#plan_purchase_or_upgrade_url" do
+    let(:plan) { double('Plan') }
+
+    it 'is upgradable' do
+      group = double('Group', upgradable?: true)
+
+      expect(helper).to receive(:plan_upgrade_url)
+
+      helper.plan_purchase_or_upgrade_url(group, plan)
+    end
+
+    it 'is purchasable' do
+      group = double('Group', upgradable?: false)
+
+      expect(helper).to receive(:plan_purchase_url)
+
+      helper.plan_purchase_or_upgrade_url(group, plan)
+    end
+  end
 end