feat(web)!: SPA (#5069)

* feat(web): SPA

* chore: remove unnecessary prune

* feat(web): merge with immich-server

* Correct method name

* fix: bugs, docs, workflows, etc.

* chore: keep dockerignore for dev

* chore: remove license

* fix: expose 2283

---------

Co-authored-by: Alex Tran <alex.tran1502@gmail.com>

web/src/lib/utils/auth.ts

@@ -0,0 +1,34 @@
+import { api } from '@api';
+import { redirect } from '@sveltejs/kit';
+import { AppRoute } from '../constants';
+
+export interface AuthOptions {
+  admin?: true;
+}
+
+export const getAuthUser = async () => {
+  try {
+    const { data: user } = await api.userApi.getMyUserInfo();
+    return user;
+  } catch {
+    return null;
+  }
+};
+
+// TODO: re-use already loaded user (once) instead of fetching on each page navigation
+export const authenticate = async (options?: AuthOptions) => {
+  options = options || {};
+
+  const user = await getAuthUser();
+  if (!user) {
+    throw redirect(302, AppRoute.AUTH_LOGIN);
+  }
+
+  if (options.admin && !user.isAdmin) {
+    throw redirect(302, AppRoute.PHOTOS);
+  }
+
+  return user;
+};
+
+export const isLoggedIn = async () => getAuthUser().then((user) => !!user);