v0.1.45 - 로그인 유지 옵션과 랜딩 문구 정리

src/lib/authClient.js

@@ -28,29 +28,39 @@ async function request(path, { method = 'GET', token, body } = {}) {
 
 export function readAuthState() {
   if (typeof window === 'undefined') {
-    return { token: '', user: null }
+    return { token: '', user: null, persist: false }
   }
 
   try {
-    return JSON.parse(window.localStorage.getItem(AUTH_STORAGE_KEY) ?? '{"token":"","user":null}')
+    const localState = JSON.parse(window.localStorage.getItem(AUTH_STORAGE_KEY) ?? 'null')
+
+    if (localState?.token) {
+      return { ...localState, persist: true }
+    }
+
+    const sessionState = JSON.parse(window.sessionStorage.getItem(AUTH_STORAGE_KEY) ?? 'null')
+
+    if (sessionState?.token) {
+      return { ...sessionState, persist: false }
+    }
+
+    return { token: '', user: null, persist: false }
   } catch (error) {
     console.warn('저장된 인증 상태를 불러오지 못했습니다.', error)
-    return { token: '', user: null }
+    return { token: '', user: null, persist: false }
   }
 }
 
-export function persistAuthState({ token, user }) {
+export function persistAuthState({ token, user, persist = false }) {
   if (typeof window === 'undefined') {
     return
   }
 
-  window.localStorage.setItem(
-    AUTH_STORAGE_KEY,
-    JSON.stringify({
-      token,
-      user,
-    }),
-  )
+  const targetStorage = persist ? window.localStorage : window.sessionStorage
+  const unusedStorage = persist ? window.sessionStorage : window.localStorage
+
+  unusedStorage.removeItem(AUTH_STORAGE_KEY)
+  targetStorage.setItem(AUTH_STORAGE_KEY, JSON.stringify({ token, user }))
 }
 
 export function clearAuthState() {
@@ -59,6 +69,7 @@ export function clearAuthState() {
   }
 
   window.localStorage.removeItem(AUTH_STORAGE_KEY)
+  window.sessionStorage.removeItem(AUTH_STORAGE_KEY)
 }
 
 export async function signup({ email, password, nickname }) {