Initialize CMS application scaffold

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

ui/app/src/api.ts

@@ -0,0 +1,49 @@
+export type User = {
+  id?: string
+  name?: string
+  email?: string
+  picture?: string
+}
+
+export type SessionResponse = {
+  authenticated?: boolean
+  user?: User
+  token?: string
+  accessToken?: string
+  sessionToken?: string
+}
+
+const baseUrl = (import.meta.env.VITE_API_BASE_URL ?? '').replace(/\/$/, '')
+export const apiConfig = {
+  google: import.meta.env.VITE_GOOGLE_AUTH_ENDPOINT ?? '/api/auth/google',
+  session: import.meta.env.VITE_SESSION_ENDPOINT ?? '/api/auth/session',
+  logout: import.meta.env.VITE_LOGOUT_ENDPOINT ?? '/api/auth/logout',
+}
+
+export function apiUrl(path: string) {
+  if (/^https?:\/\//i.test(path)) return path
+  return `${baseUrl}${path.startsWith('/') ? path : `/${path}`}`
+}
+
+export async function requestSession(): Promise<SessionResponse | null> {
+  const response = await fetch(apiUrl(apiConfig.session), {
+    credentials: 'include',
+    headers: { Accept: 'application/json' },
+  })
+  if (response.status === 401 || response.status === 404) return null
+  if (!response.ok) throw new Error('Unable to check your session.')
+  return (await response.json()) as SessionResponse
+}
+
+export async function signInWithGoogle(): Promise<SessionResponse> {
+  window.location.assign(apiUrl(apiConfig.google))
+  return {}
+}
+
+export async function signOut() {
+  await fetch(apiUrl(apiConfig.logout), {
+    method: 'POST',
+    credentials: 'include',
+    headers: { Accept: 'application/json' },
+  })
+}