Split the server API module into client, guards, form fields and action helpers

web-player/src/lib/server/guards.ts

@@ -0,0 +1,21 @@
+import { redirect } from '@sveltejs/kit';
+import type { SessionUser } from '$lib/types';
+
+export function loginRedirect(url: URL): never {
+	redirect(302, `/auth?returnTo=${encodeURIComponent(url.pathname + url.search)}`);
+}
+
+export function requireUser(locals: App.Locals, url: URL): SessionUser {
+	if (!locals.user) loginRedirect(url);
+	return locals.user;
+}
+
+export function optionalUser(
+	locals: App.Locals,
+	url: URL,
+	allowAnonymousListening: boolean
+): SessionUser | null {
+	if (locals.user) return locals.user;
+	if (!allowAnonymousListening) loginRedirect(url);
+	return null;
+}