Initial commit

frontend/app/lib/auth.ts

@@ -0,0 +1,25 @@
+export const getApiBase = () => process.env.NEXT_PUBLIC_API_BASE ?? '/api'
+
+export const getToken = () => {
+  if (typeof window === 'undefined') return null
+  return window.localStorage.getItem('magent_token')
+}
+
+export const setToken = (token: string) => {
+  if (typeof window === 'undefined') return
+  window.localStorage.setItem('magent_token', token)
+}
+
+export const clearToken = () => {
+  if (typeof window === 'undefined') return
+  window.localStorage.removeItem('magent_token')
+}
+
+export const authFetch = (input: RequestInfo | URL, init?: RequestInit) => {
+  const token = getToken()
+  const headers = new Headers(init?.headers || {})
+  if (token) {
+    headers.set('Authorization', `Bearer ${token}`)
+  }
+  return fetch(input, { ...init, headers })
+}