Send user email when their group expiration date is changed

Doesn't work yet

app/helpers/emails_helper.rb

@@ -214,6 +214,29 @@ module EmailsHelper
     end
   end
 
+  def group_membership_expiration_changed_text(member, group)
+    if member.expires?
+      days = (member.expires_at - Date.today).to_i
+      days_formatted = pluralize(days, 'day')
+
+      _('Your %{group} membership will now expire in %{days}.') % { group: group.human_name, days: days_formatted }
+    else
+      _('Your membership in %{group} no longer expires.') % { group: group.human_name }
+    end
+  end
+
+  def group_membership_expiration_changed_link(member, group, format: nil)
+    url = group_group_members_url(group, search: member.user.username)
+
+    case format
+    when :html
+      link_to = generate_link('group membership', url).html_safe
+      _('For additional information, review your %{link_to} or contact your group owner.').html_safe % { link_to: link_to }
+    else
+      _('For additional information, review your group membership: %{link_to} or contact your group owner.') % { link_to: url }
+    end
+  end
+
   def instance_access_request_text(user, format: nil)
     gitlab_host = Gitlab.config.gitlab.host
 

app/mailers/emails/members.rb

@@ -114,6 +114,23 @@ module Emails
         subject: subject('Invitation declined'))
     end
 
+    def member_expiration_date_updated_email(member_source_type, member_id)
+      @member_source_type = member_source_type
+      @member_id = member_id
+
+      return unless member_exists?
+
+      subject = if member.expires?
+                  _('Group membership expiration date changed')
+                else
+                  _('Group membership expiration date removed')
+                end
+
+      member_email_with_layout(
+        to: member.user.notification_email_for(notification_group),
+        subject: subject(subject))
+    end
+
     # rubocop: disable CodeReuse/ActiveRecord
     def member
       @member ||= Member.find_by(id: @member_id)

app/models/members/group_member.rb

@@ -74,6 +74,10 @@ class GroupMember < Member
       run_after_commit { notification_service.update_group_member(self) }
     end
 
+    if saved_change_to_expires_at?
+      run_after_commit { notification_service.updated_group_member_expiration(self) }
+    end
+
     super
   end
 

app/services/notification_service.rb

@@ -481,6 +481,12 @@ class NotificationService
     mailer.member_access_granted_email(group_member.real_source_type, group_member.id).deliver_later
   end
 
+  def updated_group_member_expiration(group_member)
+    return true unless group_member.notifiable?(:mention)
+
+    mailer.member_expiration_date_updated_email(group_member.real_source_type, group_member.id).deliver_later
+  end
+
   def project_was_moved(project, old_path_with_namespace)
     recipients = project_moved_recipients(project)
     recipients = notifiable_users(recipients, :custom, custom_action: :moved_project, project: project)

app/views/notify/member_expiration_date_updated_email.html.haml

+= email_default_heading(say_hi(@member.user))
+
+%p
+  = group_membership_expiration_changed_text(@member, @member_source)
+%p
+  = group_membership_expiration_changed_link(@member, @member_source, format: :html)

app/views/notify/member_expiration_date_updated_email.text.erb

+<%= say_hi(@member.user) %>
+
+<%= group_membership_expiration_changed_text(@member, @member_source) %>
+
+<%= group_membership_expiration_changed_link(@member, @member_source) %>

changelogs/unreleased/294422-follow-up-from-fire-webhook-when-updating-or-removing-a-group-memb.yml

+---
+title: Send email when group member expiry is updated
+merge_request: 50310
+author:
+type: added

locale/gitlab.pot

@@ -12614,6 +12614,12 @@ msgstr ""
 msgid "For a faster browsing experience, some files are collapsed by default."
 msgstr ""
 
+msgid "For additional information, review your %{link_to} or contact your group owner."
+msgstr ""
+
+msgid "For additional information, review your group membership: %{link_to} or contact your group owner."
+msgstr ""
+
 msgid "For help setting up the Service Desk for your instance, please contact an administrator."
 msgstr ""
 
@@ -13709,6 +13715,12 @@ msgstr ""
 msgid "Group members"
 msgstr ""
 
+msgid "Group membership expiration date changed"
+msgstr ""
+
+msgid "Group membership expiration date removed"
+msgstr ""
+
 msgid "Group milestone"
 msgstr ""
 
@@ -32591,6 +32603,9 @@ msgstr ""
 msgid "YouTube URL or ID"
 msgstr ""
 
+msgid "Your %{group} membership will now expire in %{days}."
+msgstr ""
+
 msgid "Your %{host} account was signed in to from a new location"
 msgstr ""
 
@@ -32789,6 +32804,9 @@ msgstr ""
 msgid "Your license will be included in your GitLab backup and will survive upgrades, so in normal usage you should never need to re-upload your %{code_open}.gitlab-license%{code_close} file."
 msgstr ""
 
+msgid "Your membership in %{group} no longer expires."
+msgstr ""
+
 msgid "Your message here"
 msgstr ""
 

spec/mailers/notify_spec.rb

@@ -1615,6 +1615,88 @@ RSpec.describe Notify do
         is_expected.to have_body_text group_member.invite_email
       end
     end
+
+    describe 'group expiration date updated' do
+      let_it_be(:group_member) { create(:group_member, group: group, expires_at: 1.day.from_now) }
+
+      context 'when expiration date is changed' do
+        subject { described_class.member_expiration_date_updated_email('group', group_member.id) }
+
+        it_behaves_like 'an email sent from GitLab'
+        it_behaves_like 'it should not have Gmail Actions links'
+        it_behaves_like 'a user cannot unsubscribe through footer link'
+        it_behaves_like 'appearance header and footer enabled'
+        it_behaves_like 'appearance header and footer not enabled'
+
+        context 'when expiration date is one day away' do
+          it 'contains all the useful information' do
+            is_expected.to have_subject 'Group membership expiration date changed'
+            is_expected.to have_body_text group_member.user.name
+            is_expected.to have_body_text group.name
+            is_expected.to have_body_text group.web_url
+            is_expected.to have_body_text group_group_members_url(group, search: group_member.user.username)
+            is_expected.to have_body_text 'day.'
+            is_expected.not_to have_body_text 'days.'
+          end
+        end
+
+        context 'when expiration date is more than one day away' do
+          before do
+            group_member.update!(expires_at: 20.days.from_now)
+          end
+
+          it 'contains all the useful information' do
+            is_expected.to have_subject 'Group membership expiration date changed'
+            is_expected.to have_body_text group_member.user.name
+            is_expected.to have_body_text group.name
+            is_expected.to have_body_text group.web_url
+            is_expected.to have_body_text group_group_members_url(group, search: group_member.user.username)
+            is_expected.to have_body_text 'days.'
+            is_expected.not_to have_body_text 'day.'
+          end
+        end
+
+        context 'when a group member is newly given an expiration date' do
+          let_it_be(:group_member) { create(:group_member, group: group) }
+
+          before do
+            group_member.update!(expires_at: 5.days.from_now)
+          end
+
+          subject { described_class.member_expiration_date_updated_email('group', group_member.id) }
+
+          it 'contains all the useful information' do
+            is_expected.to have_subject 'Group membership expiration date changed'
+            is_expected.to have_body_text group_member.user.name
+            is_expected.to have_body_text group.name
+            is_expected.to have_body_text group.web_url
+            is_expected.to have_body_text group_group_members_url(group, search: group_member.user.username)
+            is_expected.to have_body_text 'days.'
+            is_expected.not_to have_body_text 'day.'
+          end
+        end
+      end
+
+      context 'when expiration date is removed' do
+        before do
+          group_member.update!(expires_at: nil)
+        end
+
+        subject { described_class.member_expiration_date_updated_email('group', group_member.id) }
+
+        it_behaves_like 'an email sent from GitLab'
+        it_behaves_like 'it should not have Gmail Actions links'
+        it_behaves_like 'a user cannot unsubscribe through footer link'
+        it_behaves_like 'appearance header and footer enabled'
+        it_behaves_like 'appearance header and footer not enabled'
+
+        it 'contains all the useful information' do
+          is_expected.to have_subject 'Group membership expiration date removed'
+          is_expected.to have_body_text group_member.user.name
+          is_expected.to have_body_text group.name
+        end
+      end
+    end
   end
 
   describe 'confirmation if email changed' do

spec/models/members/group_member_spec.rb

@@ -123,4 +123,16 @@ RSpec.describe GroupMember do
       end
     end
   end
+
+  context 'when group member expiration date is updated' do
+    let_it_be(:group_member) { create(:group_member) }
+
+    it 'emails the user that their group membership expiry has changed' do
+      expect_next_instance_of(NotificationService) do |notification|
+        allow(notification).to receive(:updated_group_member_expiration).with(group_member)
+      end
+
+      group_member.update!(expires_at: 5.days.from_now)
+    end
+  end
 end

spec/services/notification_service_spec.rb

@@ -2455,6 +2455,18 @@ RSpec.describe NotificationService, :mailer do
         let(:notification_trigger) { group.add_guest(added_user) }
       end
     end
+
+    describe '#updated_group_member_expiration' do
+      let_it_be(:group_member) { create(:group_member) }
+
+      it 'emails the user that their group membership expiry has changed' do
+        expect_next_instance_of(NotificationService) do |notification|
+          allow(notification).to receive(:updated_group_member_expiration).with(group_member)
+        end
+
+        group_member.update!(expires_at: 5.days.from_now)
+      end
+    end
   end
 
   describe 'ProjectMember', :deliver_mails_inline do