How can I get the server hostname and port inside a route?

[sekoyo]

For specifying an oauth redirect path I'd like to know the hostname and port inside a route handler. In this case in another file so I can't reference app (anyway referencing app causes a TS inferal issue as seen below). How can I do that?

The only way I found so far is:

import Elysia from 'elysia'

// .use(serverInfo)
export const serverInfo = () => {
  const app = new Elysia({
    name: 'app:serverInfo',
  }).derive(() => {
    return {
      hostname: app.server?.hostname || '',
      port: app.server?.port || '',
    }
  }) as Elysia<
    '',
    false,
    {
      decorator: {}
      store: {}
      derive: {}
      resolve: {}
    },
    {
      type: {}
      error: {}
    },
    {
      schema: {}
      macro: {}
    },
    {},
    {
      derive: {}
      resolve: {}
      schema: {}
    },
    {
      derive: {
        readonly hostname: ''
        readonly port: ''
      }
      resolve: {}
      schema: {}
    }
  >

  return app
}

Which I'm mostly satisfied with but since the handler has to refer to app I needed to explicitly type it, and that's really nasty and brittle looking unless there's a better way.

It would of course be a lot easier if the handlers had server in the context arg.

(And it would also be good if server had app.server?.protocol)

[sekoyo]

I think I'm overcooking this and I'll just have an env var for oauth redirect