feat(poc): Disable widget based on country (#6658)

enterprise/app/controllers/enterprise/widgets_controller.rb

@@ -0,0 +1,14 @@
+module Enterprise::WidgetsController
+  private
+
+  def ensure_location_is_supported
+    countries = @web_widget.inbox.account.custom_attributes['allowed_countries']
+    return if countries.blank?
+
+    geocoder_result = IpLookupService.new.perform(request.remote_ip)
+    return unless geocoder_result
+
+    country_enabled = countries.include?(geocoder_result.country_code)
+    render json: { error: 'Location is not supported' }, status: :unauthorized unless country_enabled
+  end
+end