clanker-saddle/src/entrypoints/LoginEntrypoint.vala

using Spry;
using Spry.Authentication;
using Statum;

namespace ClankerSaddle {

    /** Public data of the login page's `page` slot. */
    public class LoginPagePublic : Object {
        public Statum.Model.ActionDto login { get; set; }
    }

    /**
     * Entrypoint for /login: hydrates the page slot with the
     * {@link LoginAction} reference; authenticated visitors are sent
     * straight to the dashboard.
     */
    public class LoginEntrypoint : StatumEntrypoint {

        public override async DirectiveBuilder handle() throws GLib.Error {
            if (!SpryAuth.current(request).is_anonymous) {
                return directives().navigate("/");
            }

            var page = new LoginPagePublic();
            page.login = action_registry.author<LoginAction>();
            return directives().set_typed<LoginPagePublic>("page", Scope.PAGE, page);
        }
    }
}