add delete_at when user is deactivated

lib/factory/user.js

@@ -59,6 +59,7 @@ const schema = {
   notify_props: Joi.object({
     mention_keys: Joi.string().optional().allow(''),
   }).optional(),
+  delete_at: Joi.number().integer().min(0).optional(),
 }
 
 //

lib/rocketchat/users.js

@@ -59,6 +59,10 @@ module.exports = async function(context) {
       if (!user.roles.length) {
         delete user.roles
       }
+      if (result.active === false) {
+        user.delete_at = result._updatedAt ? new Date(result._updatedAt).getTime() : Date.now()
+      }
+
       const avatar = await getAvatar(context, result)
       if (avatar) {
         user.profile_image = avatar