feat: Audit Logs for Account User Changes (#7405)

- Audit log for user invitations: https://linear.app/chatwoot/issue/CW-1768/invited-a-user-to-the-account
- Audit log for change role: https://linear.app/chatwoot/issue/CW-1767/name-or-email-changed-the-role-of-the-user-email-to-agent-or-admin
- Audit log for status change: https://linear.app/chatwoot/issue/CW-1766/availability-status-as-events-for-audit-logs


Co-authored-by: Shivam Mishra <scm.mymail@gmail.com>

spec/enterprise/models/account_user_spec.rb

@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe AccountUser do
+  describe 'audit log' do
+    context 'when account user is created' do
+      it 'has associated audit log created' do
+        account_user = create(:account_user)
+        account_user_audit_log = Audited::Audit.where(auditable_type: 'AccountUser', action: 'create').first
+        expect(account_user_audit_log).to be_present
+        expect(account_user_audit_log.associated).to eq(account_user.account)
+      end
+    end
+
+    context 'when account user is updated' do
+      it 'has associated audit log created' do
+        account_user = create(:account_user)
+        account_user.update!(availability: 'offline')
+        account_user_audit_log = Audited::Audit.where(auditable_type: 'AccountUser', action: 'update').first
+        expect(account_user_audit_log).to be_present
+        expect(account_user_audit_log.associated).to eq(account_user.account)
+        expect(account_user_audit_log.audited_changes).to eq('availability' => [0, 1])
+      end
+    end
+  end
+end

spec/enterprise/models/user_spec.rb

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe User do
+  let(:user) { create(:user) }
+
+  describe 'audit log' do
+    context 'when user is created' do
+      it 'has no associated audit log created' do
+        expect(Audited::Audit.where(auditable_type: 'User', action: 'create').count).to eq 0
+      end
+    end
+  end
+end