[Fix] 인증 관련 로직 수정

src/hooks/use-auth/use-auth-login/index.ts

@@ -1,6 +1,6 @@
 'use client';
 
-import { useRouter, useSearchParams } from 'next/navigation';
+import { useSearchParams } from 'next/navigation';
 
 import { useCallback, useState } from 'react';
 
@@ -48,7 +48,6 @@ const isCommonErrorResponse = (e: unknown): e is CommonErrorResponse => {
 };
 
 export const useLogin = () => {
-  const router = useRouter();
   const searchParams = useSearchParams();
 
   const [loginError, setLoginError] = useState<string | null>(null);
@@ -75,7 +74,7 @@ export const useLogin = () => {
       setIsAuthenticated(true);
 
       const nextPath = normalizePath(searchParams.get('path'));
-      router.replace(nextPath);
+      window.location.replace(nextPath);
     } catch (error) {
       if (isCommonErrorResponse(error)) {
         console.error('[LOGIN ERROR]', error.errorCode, error.detail);

src/middleware.ts → src/proxy.ts

@@ -1,22 +1,27 @@
 import { NextRequest, NextResponse } from 'next/server';
 
-export const middleware = (request: NextRequest) => {
-  // const accessToken = request.cookies.get('accessToken');
+export const proxy = (request: NextRequest) => {
+  const accessToken = request.cookies.get('accessToken');
   const refreshToken = request.cookies.get('refreshToken');
 
   const protectedPaths = ['/mypage', '/create-group', '/message', '/schedule', '/notification'];
   const isProtected = protectedPaths.some((path) => request.nextUrl.pathname.startsWith(path));
 
+  const publicPaths = ['/login', '/signup'];
+  const isPublic = publicPaths.some((path) => request.nextUrl.pathname.startsWith(path));
+
+  // 인증된 사용자가 public 페이지 접근 시 홈으로
+  if (isPublic && (accessToken || refreshToken)) {
+    return NextResponse.redirect(new URL('/', request.url));
+  }
+
   // 보호되지 않은 경로는 그냥 통과
   if (!isProtected) {
     return NextResponse.next();
   }
 
-  console.log(`refreshToken 보유 여부`);
-  console.log(refreshToken);
-
   // 둘 다 없으면 로그인 페이지로 redirect
-  if (!refreshToken) {
+  if (!accessToken && !refreshToken) {
     const loginUrl = new URL('/login', request.url);
     loginUrl.searchParams.set('error', 'unauthorized');
     loginUrl.searchParams.set('path', request.nextUrl.pathname);
@@ -27,5 +32,5 @@ export const middleware = (request: NextRequest) => {
 };
 
 export const config = {
-  matcher: ['/((?!api|_next/static|_next/image|favicon.ico|login|signup).*)'],
+  matcher: ['/((?!api|_next/static|_next/image|favicon.ico).*)'],
 };