We have a custom built app that shows up in the Shopify admin console under apps. The app is to create custom discounts in our shopify mall. We have operations staff that should be allowed to create the discounts but our heldesk should only be allowed to read. Is it possible to find the user ID of the shopify admin user who is viewing the app? I would like to add some custom permissions in our app (read only, read/write, superuser, etc) and would need to base it on the logged in user. Trying to avoid putting a login page within the custom app as the landing page since the user already logged in.