Include `Last Activity` in User Permissions CSV export

This MR adds date of Last Activity of users
in the CSV export of user permissions

Changelog: added
EE: true

app/models/member.rb

@@ -25,7 +25,7 @@ class Member < ApplicationRecord
   belongs_to :source, polymorphic: true # rubocop:disable Cop/PolymorphicAssociations
   has_one :member_task
 
-  delegate :name, :username, :email, to: :user, prefix: true
+  delegate :name, :username, :email, :last_activity_on, to: :user, prefix: true
   delegate :tasks_to_be_done, to: :member_task, allow_nil: true
 
   validates :expires_at, allow_blank: true, future_date: true

doc/user/admin_area/index.md

@@ -199,6 +199,7 @@ The following data is included in the export:
 - Type
 - Path
 - Access level ([Project](../permissions.md#project-members-permissions) and [Group](../permissions.md#group-members-permissions))
+- Date of last activity ([introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/345388) in GitLab 14.6). For a list of activities that populate this column, see the [Users API documentation](../../api/users.md#get-user-activities-admin-only).
 
 ![user permission export button](img/export_permissions_v13_11.png)
 

ee/app/services/user_permissions/export_service.rb

@@ -36,7 +36,8 @@ module UserPermissions
         'Email' => 'user_email',
         'Type' => 'source_kind',
         'Path' => -> (member) { member.source&.full_path },
-        'Access Level' => 'human_access'
+        'Access Level' => 'human_access',
+        'Last Activity' => 'user_last_activity_on'
       }
     end
   end

ee/spec/requests/admin/user_permission_exports_controller_spec.rb

@@ -24,9 +24,9 @@ RSpec.describe Admin::UserPermissionExportsController do
       context 'when successful' do
         let(:csv_data) do
           <<~CSV
-          Username,Email,Type,Path,Access
-          alvina,alvina@test.com,Group,gitlab-org,Developer
-          jasper,jasper@test.com,Project,gitlab-org/www,Maintainer
+          Username,Email,Type,Path,Access,Last Activity
+          alvina,alvina@test.com,Group,gitlab-org,Developer,2020-12-18
+          jasper,jasper@test.com,Project,gitlab-org/www,Maintainer,2020-12-16
           CSV
         end
 
@@ -51,19 +51,21 @@ RSpec.describe Admin::UserPermissionExportsController do
           subject
 
           expect(csv_response).to eq([
-            %w(
-              Username
-              Email
-              Type
-              Path
-              Access
-            ),
+            [
+              'Username',
+              'Email',
+              'Type',
+              'Path',
+              'Access',
+              'Last Activity'
+            ],
             %w(
               alvina
               alvina@test.com
               Group
               gitlab-org
               Developer
+              2020-12-18
              ),
             %w(
               jasper
@@ -71,6 +73,7 @@ RSpec.describe Admin::UserPermissionExportsController do
               Project
               gitlab-org/www
               Maintainer
+              2020-12-16
             )
           ])
         end

ee/spec/services/user_permissions/export_service_spec.rb

@@ -6,7 +6,7 @@ RSpec.describe UserPermissions::ExportService do
   let(:service) { described_class.new(current_user) }
 
   let_it_be(:admin) { create(:admin) }
-  let_it_be(:user) { create(:user, username: 'Jessica', email: 'jessica@test.com') }
+  let_it_be(:user) { create(:user, username: 'Jessica', email: 'jessica@test.com', last_activity_on: Date.new(2020, 12, 16)) }
 
   context 'access' do
     shared_examples 'allowed to export user permissions' do
@@ -67,7 +67,7 @@ RSpec.describe UserPermissions::ExportService do
 
     it 'includes the appropriate headers' do
       expect(csv.headers).to eq([
-        'Username', 'Email', 'Type', 'Path', 'Access Level'
+        'Username', 'Email', 'Type', 'Path', 'Access Level', 'Last Activity'
       ])
     end
 
@@ -91,9 +91,13 @@ RSpec.describe UserPermissions::ExportService do
       expect(csv[0]['Access Level']).to eq('Owner')
     end
 
+    specify 'Last Activity' do
+      expect(csv[0]['Last Activity']).to eq('2020-12-16')
+    end
+
     context 'when user is member of a sub group' do
       let_it_be(:sub_group) { create(:group, parent: group) }
-      let_it_be(:sub_group_user) { create(:user, username: 'Oliver', email: 'oliver@test.com') }
+      let_it_be(:sub_group_user) { create(:user, username: 'Oliver', email: 'oliver@test.com', last_activity_on: Date.new(2020, 12, 18)) }
       let_it_be(:sub_group_maintainer) { create(:group_member, :maintainer, group: sub_group, user: sub_group_user) }
 
       it 'displays attributes correctly', :aggregate_failures do
@@ -102,12 +106,13 @@ RSpec.describe UserPermissions::ExportService do
         expect(row['Path']).to eq(sub_group.full_path)
         expect(row['Type']).to eq('Sub group')
         expect(row['Access Level']).to eq('Maintainer')
+        expect(row['Last Activity']).to eq('2020-12-18')
       end
     end
 
     context 'when user is member of a project' do
       let_it_be(:project) { create(:project, namespace: group) }
-      let_it_be(:project_user) { create(:user, username: 'Theo', email: 'theo@test.com') }
+      let_it_be(:project_user) { create(:user, username: 'Theo', email: 'theo@test.com', last_activity_on: nil) }
       let_it_be(:project_developer) { create(:project_member, :developer, project: project, user: project_user) }
 
       it 'displays attributes correctly', :aggregate_failures do
@@ -116,6 +121,7 @@ RSpec.describe UserPermissions::ExportService do
         expect(row['Path']).to eq(project.full_path)
         expect(row['Type']).to eq('Project')
         expect(row['Access Level']).to eq('Developer')
+        expect(row['Last Activity']).to be_nil
       end
     end
   end