Add CTAs and click-tracking to the paid feature callout popover

- Add the two CTAs buttons: "Upgrade to GitLab Premium" & "Compare all
  plans"
- Track when those buttons are clicked
- Take the user to the appropriate place in the app within a new tab:
  - Upgrade: go to in-app purchase flow for the group which has the
    active trial and pre-select the "Premium" plan
  - Compare: go to the billing page for the group which has the active
    trial

ee/app/assets/javascripts/paid_feature_callouts/components/paid_feature_callout_popover.vue

 <script>
-import { GlPopover } from '@gitlab/ui';
+import { GlButton, GlPopover } from '@gitlab/ui';
 import { GlBreakpointInstance as bp } from '@gitlab/ui/dist/utils';
 import { debounce } from 'lodash';
 import { __, n__, s__, sprintf } from '~/locale';
@@ -8,7 +8,13 @@ import Tracking from '~/tracking';
 const RESIZE_EVENT_DEBOUNCE_MS = 150;
 
 export default {
+  tracking: {
+    event: 'click_button',
+    labels: { upgrade: 'upgrade_to_ultimate', compare: 'compare_all_plans' },
+    property: 'experiment:highlight_paid_features_during_active_trial',
+  },
   components: {
+    GlButton,
     GlPopover,
   },
   mixins: [Tracking.mixin()],
@@ -26,6 +32,14 @@ export default {
       type: String,
       required: true,
     },
+    hrefComparePlans: {
+      type: String,
+      required: true,
+    },
+    hrefUpgradeToPaid: {
+      type: String,
+      required: true,
+    },
     planNameForTrial: {
       type: String,
       required: true,
@@ -54,6 +68,9 @@ export default {
       disabled: false,
     };
   },
+  i18n: {
+    compareAllButtonTitle: s__('BillingPlans|Compare all plans'),
+  },
   computed: {
     popoverTitle() {
       const i18nPopoverTitle = n__(
@@ -77,6 +94,13 @@ export default {
         planNameForUpgrade: this.planNameForUpgrade,
       });
     },
+    upgradeButtonTitle() {
+      const i18nUpgradeButtonTitle = s__('BillingPlans|Upgrade to GitLab %{planNameForUpgrade}');
+
+      return sprintf(i18nUpgradeButtonTitle, {
+        planNameForUpgrade: this.planNameForUpgrade,
+      });
+    },
   },
   created() {
     this.debouncedResize = debounce(() => this.onResize(), RESIZE_EVENT_DEBOUNCE_MS);
@@ -128,5 +152,38 @@ export default {
     </div>
 
     {{ popoverContent }}
+
+    <div class="gl-mt-5">
+      <gl-button
+        :href="hrefUpgradeToPaid"
+        target="_blank"
+        category="primary"
+        variant="confirm"
+        size="small"
+        class="gl-mb-0"
+        block
+        data-testid="upgradeBtn"
+        :data-track-event="$options.tracking.event"
+        :data-track-label="$options.tracking.labels.upgrade"
+        :data-track-property="$options.tracking.property"
+      >
+        <span class="gl-font-sm">{{ upgradeButtonTitle }}</span>
+      </gl-button>
+      <gl-button
+        :href="hrefComparePlans"
+        target="_blank"
+        category="secondary"
+        variant="confirm"
+        size="small"
+        class="gl-mb-0"
+        block
+        data-testid="compareBtn"
+        :data-track-event="$options.tracking.event"
+        :data-track-label="$options.tracking.labels.compare"
+        :data-track-property="$options.tracking.property"
+      >
+        <span class="gl-font-sm">{{ $options.i18n.compareAllButtonTitle }}</span>
+      </gl-button>
+    </div>
   </gl-popover>
 </template>

ee/app/assets/javascripts/paid_feature_callouts/index.js

@@ -25,6 +25,8 @@ export const initPaidFeatureCalloutPopover = () => {
     containerId,
     daysRemaining,
     featureName,
+    hrefComparePlans,
+    hrefUpgradeToPaid,
     planNameForTrial,
     planNameForUpgrade,
     promoImageAltText,
@@ -40,6 +42,8 @@ export const initPaidFeatureCalloutPopover = () => {
           containerId,
           daysRemaining: Number(daysRemaining),
           featureName,
+          hrefComparePlans,
+          hrefUpgradeToPaid,
           planNameForTrial,
           planNameForUpgrade,
           promoImageAltText,

ee/app/helpers/paid_feature_callout_helper.rb

@@ -28,6 +28,8 @@ module PaidFeatureCalloutHelper
     base_attrs.merge({
       container_id: container_id,
       days_remaining: group.trial_days_remaining,
+      href_compare_plans: group_billings_path(group),
+      href_upgrade_to_paid: premium_subscription_path_for_group(group),
       plan_name_for_trial: group.gitlab_subscription&.plan_title,
       plan_name_for_upgrade: 'Premium',
       target_id: container_id
@@ -43,4 +45,9 @@ module PaidFeatureCalloutHelper
   def base_paid_feature_data_attrs(feature_name)
     { feature_name: feature_name }
   end
+
+  def premium_subscription_path_for_group(group)
+    # Hard-coding the plan_id to the Premium plan on production & staging
+    new_subscriptions_path(namespace_id: group.id, plan_id: '2c92c0f876e0f4cc0176e176a08f1b70')
+  end
 end

ee/spec/frontend/paid_feature_callouts/paid_feature_callout_popover_spec.js

@@ -15,8 +15,10 @@ describe('PaidFeatureCalloutPopover', () => {
   const defaultProps = {
     daysRemaining: 12,
     featureName: 'some feature',
-    planNameForTrial: 'Ultimate',
-    planNameForUpgrade: 'Premium',
+    hrefComparePlans: '/group/test-group/-/billings',
+    hrefUpgradeToPaid: '/-/subscriptions/new?namespace_id=123&plan_id=abc456',
+    planNameForTrial: 'Awesomesauce',
+    planNameForUpgrade: 'Amazing',
     targetId: 'some-feature-callout-target',
   };
 
@@ -32,38 +34,59 @@ describe('PaidFeatureCalloutPopover', () => {
     wrapper.destroy();
   });
 
-  describe('with some default props', () => {
-    beforeEach(() => {
-      wrapper = createComponent();
+  describe('GlPopover attributes', () => {
+    describe('with some default props', () => {
+      beforeEach(() => {
+        wrapper = createComponent();
+      });
+
+      it('sets attributes on the GlPopover component', () => {
+        const attributes = findGlPopover().attributes();
+
+        expect(attributes).toMatchObject({
+          boundary: 'viewport',
+          placement: 'top',
+          target: 'some-feature-callout-target',
+        });
+        expect(attributes.containerId).toBeUndefined();
+      });
     });
 
-    it('sets attributes on the GlPopover component', () => {
-      const attributes = findGlPopover().attributes();
+    describe('with additional, optional props', () => {
+      beforeEach(() => {
+        wrapper = createComponent({
+          ...defaultProps,
+          containerId: 'some-container-id',
+        });
+      });
 
-      expect(attributes).toMatchObject({
-        boundary: 'viewport',
-        placement: 'top',
-        target: 'some-feature-callout-target',
+      it('sets more attributes on the GlPopover component', () => {
+        expect(findGlPopover().attributes()).toMatchObject({
+          boundary: 'viewport',
+          container: 'some-container-id',
+          placement: 'top',
+          target: 'some-feature-callout-target',
+        });
       });
-      expect(attributes.containerId).toBeUndefined();
     });
   });
 
-  describe('with additional, optional props', () => {
-    beforeEach(() => {
-      wrapper = createComponent({
-        ...defaultProps,
-        containerId: 'some-container-id',
-      });
+  describe('popoverTitle', () => {
+    it('renders the title text', () => {
+      wrapper = createComponent();
+
+      expect(wrapper.vm.popoverTitle).toEqual('12 days remaining to enjoy some feature');
     });
+  });
 
-    it('sets more attributes on the GlPopover component', () => {
-      expect(findGlPopover().attributes()).toMatchObject({
-        boundary: 'viewport',
-        container: 'some-container-id',
-        placement: 'top',
-        target: 'some-feature-callout-target',
-      });
+  describe('popoverContent', () => {
+    it('renders the content text', () => {
+      wrapper = createComponent();
+
+      expect(wrapper.vm.popoverContent).toEqual(
+        'Enjoying your GitLab Awesomesauce trial? To continue using some feature after your trial ends, upgrade to ' +
+          'GitLab Amazing.',
+      );
     });
   });
 
@@ -121,6 +144,49 @@ describe('PaidFeatureCalloutPopover', () => {
     });
   });
 
+  describe('call-to-action buttons', () => {
+    const findUpgradeBtn = () => wrapper.findByTestId('upgradeBtn');
+    const findCompareBtn = () => wrapper.findByTestId('compareBtn');
+
+    beforeEach(() => {
+      wrapper = createComponent();
+    });
+
+    it('correctly renders an Upgrade button', () => {
+      const upgradeBtn = findUpgradeBtn();
+
+      expect(upgradeBtn.text()).toEqual('Upgrade to GitLab Amazing');
+      expect(upgradeBtn.attributes()).toMatchObject({
+        href: '/-/subscriptions/new?namespace_id=123&plan_id=abc456',
+        target: '_blank',
+        category: 'primary',
+        variant: 'confirm',
+        size: 'small',
+        block: '',
+        'data-track-event': 'click_button',
+        'data-track-label': 'upgrade_to_ultimate',
+        'data-track-property': 'experiment:highlight_paid_features_during_active_trial',
+      });
+    });
+
+    it('correctly renders a Compare button', () => {
+      const compareBtn = findCompareBtn();
+
+      expect(compareBtn.text()).toEqual('Compare all plans');
+      expect(compareBtn.attributes()).toMatchObject({
+        href: '/group/test-group/-/billings',
+        target: '_blank',
+        category: 'secondary',
+        variant: 'confirm',
+        size: 'small',
+        block: '',
+        'data-track-event': 'click_button',
+        'data-track-label': 'compare_all_plans',
+        'data-track-property': 'experiment:highlight_paid_features_during_active_trial',
+      });
+    });
+  });
+
   describe('onShown', () => {
     beforeEach(() => {
       trackingSpy = mockTracking(undefined, undefined, jest.spyOn);

ee/spec/helpers/paid_feature_callout_helper_spec.rb

@@ -71,15 +71,17 @@ RSpec.describe PaidFeatureCalloutHelper do
 
   describe '#paid_feature_popover_data_attrs' do
     let(:subscription) { instance_double(GitlabSubscription, plan_title: 'Ultimate') }
-    let(:group) { instance_double(Group, trial_days_remaining: 12, gitlab_subscription: subscription) }
+    let(:group) { instance_double(Group, id: 123, to_param: 'test-group', trial_days_remaining: 12, gitlab_subscription: subscription) }
 
     subject { helper.paid_feature_popover_data_attrs(group: group, feature_name: 'first feature') }
 
     it 'returns the set of data attributes needed to bootstrap the PaidFeatureCalloutPopover component' do
       expected_attrs = {
         container_id: 'first-feature-callout',
-        feature_name: 'first feature',
         days_remaining: 12,
+        feature_name: 'first feature',
+        href_compare_plans: '/groups/test-group/-/billings',
+        href_upgrade_to_paid: '/-/subscriptions/new?namespace_id=123&plan_id=2c92c0f876e0f4cc0176e176a08f1b70',
         plan_name_for_trial: 'Ultimate',
         plan_name_for_upgrade: 'Premium',
         target_id: 'first-feature-callout'

locale/gitlab.pot

@@ -4988,6 +4988,9 @@ msgstr ""
 msgid "BillingPlans|@%{user_name} you are currently using the %{plan_name}."
 msgstr ""
 
+msgid "BillingPlans|Compare all plans"
+msgstr ""
+
 msgid "BillingPlans|Congratulations, your free trial is activated."
 msgstr ""
 
@@ -5021,6 +5024,9 @@ msgstr ""
 msgid "BillingPlans|To manage the plan for this group, visit the billing section of %{parent_billing_page_link}."
 msgstr ""
 
+msgid "BillingPlans|Upgrade to GitLab %{planNameForUpgrade}"
+msgstr ""
+
 msgid "BillingPlans|While GitLab is ending availability of the Bronze plan, you can still renew your Bronze subscription one additional time before %{eoa_bronze_plan_end_date}. We are also offering a limited time free upgrade to our Premium Plan (up to 25 users)! Learn more about the changes and offers in our %{announcement_link}."
 msgstr ""