[fix, refactor] 스크롤 커스텀 및 토스트/로그인 로직 및 훅 분리

src/app/design-system/page.tsx

@@ -4,7 +4,6 @@ import Button from '@/shared/components/button/Button';
 import TextButton from '@/shared/components/button/TextButton';
 import Input from '@/shared/components/Input-box/Input';
 import { useState } from 'react';
-import { customToast } from '@/shared/components/toast/CustomToastUtils';
 import ModalLayout from '@/shared/components/modal-pop/ModalLayout';
 import SelectBox from '@/domains/shared/components/select-box/SelectBox';
 
@@ -13,10 +12,12 @@ import LikeBtn from '@/domains/community/components/like/LikeBtn';
 import Share from '@/domains/shared/components/share/Share';
 import Keep from '@/domains/shared/components/keep/Keep';
 import ConfirmModal from '@/shared/components/modal-pop/ConfirmModal';
+import { useToast } from '@/shared/hook/useToast';
 
 function Page() {
   const [isModalOpen, setModalOpen] = useState(false);
   const [isConfirmOpen, setConfirmOpen] = useState(false);
+  const { toastSuccess, toastInfo, toastError } = useToast();
 
   return (
     <div className="p-6 space-y-6 bg-primary">
@@ -78,21 +79,21 @@ function Page() {
           <div className="flex gap-2">
             <button
               className="px-4 py-2 bg-green-300 text-black rounded"
-              onClick={() => customToast.success('성공 메시지 \n 줄바꿈은 이렇게')}
+              onClick={() => toastSuccess('성공 메시지 \n 줄바꿈은 이렇게')}
             >
               Success Toast
             </button>
 
             <button
               className="px-4 py-2 bg-yellow-100 text-black rounded"
-              onClick={() => customToast.info('정보 메시지')}
+              onClick={() => toastInfo('정보 메시지')}
             >
               Info Toast
             </button>
 
             <button
               className="px-4 py-2 bg-red-200 text-black rounded"
-              onClick={() => customToast.error('오류 메시지')}
+              onClick={() => toastError('오류 메시지')}
             >
               Error Toast
             </button>

src/domains/login/components/LoginRedirectHandler.tsx

@@ -1,67 +1,11 @@
 'use client';
 
-import { useEffect, useState } from 'react';
-import { usePathname, useRouter } from 'next/navigation';
-import { customToast } from '@/shared/components/toast/CustomToastUtils';
-import { getCookie, removeCookie } from '@/domains/shared/auth/utils/cookie';
-import { useAuthStore } from '@/domains/shared/store/auth';
 import Spinner from '@/shared/components/spinner/Spinner';
 import WelcomeModal from '@/domains/login/components/WelcomeModal';
+import { useLoginRedirect } from '../hook/useAuthHooks';
 
 function LoginRedirectHandler() {
-  const pathname = usePathname();
-  const router = useRouter();
-  const { user, updateUser } = useAuthStore();
-  const [loading, setLoading] = useState(true);
-  const [welcomeModalOpen, setWelcomeModalOpen] = useState(false);
-
-  useEffect(() => {
-    if (!user && loading) {
-      updateUser()
-        .then((fetchedUser) => {
-          if (!fetchedUser) {
-            router.replace('/login');
-          }
-        })
-        .catch(() => {
-          router.replace('/login');
-        })
-        .finally(() => setLoading(false));
-    } else {
-      setLoading(false);
-    }
-  }, [user, loading, updateUser, router]);
-
-  useEffect(() => {
-    if (!user || loading) return;
-
-    const preLoginPath = getCookie('preLoginPath') || '/';
-    // 로그인 상태인데 이전 페이지가 /login이면 메인으로 이동
-    if (user && preLoginPath === '/login') {
-      router.replace('/');
-      removeCookie('preLoginPath');
-      return;
-    }
-
-    // 첫 유저일 경우 모달 오픈
-    if (pathname.startsWith('/login/user/first-user')) {
-      setWelcomeModalOpen(true);
-    }
-    // 기존 유저일 경우
-    else if (pathname.startsWith('/login/user/success')) {
-      customToast.success(`${user.nickname}님 \n 로그인 성공 🎉`);
-      router.replace(preLoginPath);
-      removeCookie('preLoginPath');
-    }
-  }, [pathname, user, loading, router]);
-
-  // 환영 모달 닫힐 때 이동
-  const handleCloseWelcomeModal = () => {
-    setWelcomeModalOpen(false);
-    const preLoginPath = getCookie('preLoginPath') || '/';
-    removeCookie('preLoginPath');
-    router.replace(preLoginPath);
-  };
+  const { loading, welcomeModalOpen, handleCloseWelcomeModal, user } = useLoginRedirect();
 
   if (loading) {
     return (

src/domains/login/components/LogoutConfirm.tsx

@@ -1,18 +1,23 @@
 import ConfirmModal from '@/shared/components/modal-pop/ConfirmModal';
+import { useLogout } from '../hook/useAuthHooks';
 
 interface Props {
   open: boolean;
   onClose: () => void;
-  onLogout: () => void;
 }
 
-function LogoutConfirm({ open, onClose, onLogout }: Props) {
+function LogoutConfirm({ open, onClose }: Props) {
+  const logoutHandler = useLogout();
+
   return (
     <ConfirmModal
       open={open}
       onClose={onClose}
       description="정말 로그아웃 하시겠어요?"
-      onConfirm={onLogout}
+      onConfirm={async () => {
+        await logoutHandler();
+        onClose();
+      }}
       onCancel={onClose}
     />
   );

src/domains/login/hook/useAuthHooks.ts

@@ -0,0 +1,75 @@
+import { useAuthStore } from '@/domains/shared/store/auth';
+import { useCallback } from 'react';
+import { useEffect, useState } from 'react';
+import { usePathname, useRouter } from 'next/navigation';
+import { getCookie, removeCookie } from '@/domains/shared/auth/utils/cookie';
+import { useToast } from '@/shared/hook/useToast';
+
+export const useLogout = () => {
+  const logout = useAuthStore((state) => state.logout);
+  const { toastSuccess, toastError } = useToast();
+
+  const handleLogout = useCallback(async () => {
+    try {
+      await logout();
+      toastSuccess('로그아웃 되었습니다.');
+    } catch (err) {
+      console.error('로그아웃 실패', err);
+      toastError('로그아웃 실패 ❌ 다시 시도해주세요.');
+    }
+  }, [logout, toastSuccess, toastError]);
+
+  return handleLogout;
+};
+
+export const useLoginRedirect = () => {
+  const router = useRouter();
+  const pathname = usePathname();
+  const { user, updateUser } = useAuthStore();
+  const { toastSuccess } = useToast();
+
+  const [loading, setLoading] = useState(true);
+  const [welcomeModalOpen, setWelcomeModalOpen] = useState(false);
+
+  useEffect(() => {
+    if (!user && loading) {
+      updateUser()
+        .then((fetchedUser) => {
+          if (!fetchedUser) router.replace('/login');
+        })
+        .catch(() => router.replace('/login'))
+        .finally(() => setLoading(false));
+    } else {
+      setLoading(false);
+    }
+  }, [user, loading, updateUser, router]);
+
+  useEffect(() => {
+    if (!user || loading) return;
+
+    const preLoginPath = getCookie('preLoginPath') || '/';
+
+    if (user && preLoginPath === '/login') {
+      router.replace('/');
+      removeCookie('preLoginPath');
+      return;
+    }
+
+    if (pathname.startsWith('/login/user/first-user')) {
+      setWelcomeModalOpen(true);
+    } else if (pathname.startsWith('/login/user/success')) {
+      toastSuccess(`${user.nickname}님 \n 로그인 성공 🎉`);
+      router.replace(preLoginPath);
+      removeCookie('preLoginPath');
+    }
+  }, [pathname, user, loading, router, toastSuccess]);
+
+  const handleCloseWelcomeModal = () => {
+    setWelcomeModalOpen(false);
+    const preLoginPath = getCookie('preLoginPath') || '/';
+    removeCookie('preLoginPath');
+    router.replace(preLoginPath);
+  };
+
+  return { loading, welcomeModalOpen, handleCloseWelcomeModal, user };
+};

src/domains/recommend/components/BotMessage.tsx

@@ -5,6 +5,7 @@ import Image from 'next/image';
 import { useState } from 'react';
 import BotCocktailCard from './BotCocktailCard';
 import BotOptions from './BotOptions';
+import TypingIndicator from './TypingIndicator';
 
 interface Message {
   id: string;
@@ -82,6 +83,7 @@ function BotMessage() {
             )}
           </div>
         ))}
+        <TypingIndicator />
       </div>
     </article>
   );

src/domains/recommend/components/ChatSection.tsx

@@ -4,7 +4,6 @@ import { useState } from 'react';
 import BotMessage from './BotMessage';
 import UserMessage from './UserMessage';
 import MessageInput from './MessageInput';
-import TypingIndicator from './TypingIndicator';
 
 function ChatSection() {
   const [messages, setMessages] = useState<string[]>([]);
@@ -18,7 +17,7 @@ function ChatSection() {
       <h2 className="sr-only">대화 목록 및 입력 창</h2>
       <div className="flex flex-col gap-10 pb-20">
         <BotMessage />
-        <TypingIndicator />
+
         {messages.map((msg, i) => (
           <UserMessage key={i} message={msg} />
         ))}

src/domains/recommend/components/TypingIndicator.tsx

@@ -6,7 +6,15 @@ function TypingIndicator() {
     <div className="relative flex items-center w-fit p-3 rounded-2xl rounded-tl-none bg-white text-black overflow-hidden">
       <p className="inline-block animate-fade-in">준비 중…</p>
       <div className="relative w-10 h-10 animate-shake">
-        <Image src={shaker} alt="Cocktail Shaker" fill className="object-contain" priority />
+        <Image
+          src={shaker}
+          alt=""
+          width={40}
+          height={40}
+          className="object-contain"
+          priority
+          aria-hidden
+        />
       </div>
     </div>
   );

src/domains/shared/store/auth.ts

@@ -1,4 +1,3 @@
-import { customToast } from '@/shared/components/toast/CustomToastUtils';
 import { create } from 'zustand';
 import { persist } from 'zustand/middleware';
 
@@ -36,7 +35,6 @@ export const useAuthStore = create<AuthState>()(
       setUser: (user, token) => {
         const updatedUser = { ...user, abv_degree: 5.0 };
         set({ user: updatedUser, accessToken: token, isLoggedIn: true });
-        customToast.success(`${updatedUser.nickname}님, 로그인 성공 🎉`);
       },
 
       logout: async () => {
@@ -45,10 +43,8 @@ export const useAuthStore = create<AuthState>()(
             method: 'POST',
             credentials: 'include',
           });
-          customToast.success('로그아웃 되었습니다.');
           set({ user: null, accessToken: null, isLoggedIn: false });
         } catch (err) {
-          customToast.error('로그아웃 실패❌ \n 다시 시도해주세요.');
           console.error('로그아웃 실패', err);
         }
       },

src/shared/components/header/DropdownMenu.tsx

@@ -160,15 +160,7 @@ function DropdownMenu({ isClicked, setIsClicked, visible, setVisible }: Props) {
         </div>
       </nav>
       {logoutModalOpen && (
-        <LogoutConfirm
-          open={logoutModalOpen}
-          onClose={() => setLogoutModalOpen(false)}
-          onLogout={async () => {
-            await logout();
-            setLogoutModalOpen(false);
-            setIsClicked(false);
-          }}
-        />
+        <LogoutConfirm open={logoutModalOpen} onClose={() => setLogoutModalOpen(false)} />
       )}
     </>,
     document.body

src/shared/components/header/HeaderBtn.tsx

@@ -10,7 +10,7 @@ import { useState } from 'react';
 import LogoutConfirm from '@/domains/login/components/LogoutConfirm';
 
 function HeaderBtn({ pathname }: { pathname: string }) {
-  const { isLoggedIn, logout } = useAuthStore();
+  const { isLoggedIn } = useAuthStore();
   const router = useRouter();
   const [logoutModalOpen, setLogoutModalOpen] = useState(false);
 
@@ -78,14 +78,7 @@ function HeaderBtn({ pathname }: { pathname: string }) {
 
       {/* 로그아웃 확인 모달 */}
       {logoutModalOpen && (
-        <LogoutConfirm
-          open={logoutModalOpen}
-          onClose={() => setLogoutModalOpen(false)}
-          onLogout={async () => {
-            await logout();
-            setLogoutModalOpen(false);
-          }}
-        />
+        <LogoutConfirm open={logoutModalOpen} onClose={() => setLogoutModalOpen(false)} />
       )}
     </>
   );

src/shared/hook/useToast.tsx

@@ -0,0 +1,22 @@
+import { useCallback } from 'react';
+import toast from 'react-hot-toast';
+import CustomToast from '../components/toast/CustomToast';
+
+export const useToast = () => {
+  const toastSuccess = useCallback((message: string) => {
+    toast.dismiss();
+    toast(<CustomToast type="success" message={message} onClose={() => toast.dismiss()} />);
+  }, []);
+
+  const toastInfo = useCallback((message: string) => {
+    toast.dismiss();
+    toast(<CustomToast type="info" message={message} onClose={() => toast.dismiss()} />);
+  }, []);
+
+  const toastError = useCallback((message: string) => {
+    toast.dismiss();
+    toast(<CustomToast type="error" message={message} onClose={() => toast.dismiss()} />);
+  }, []);
+
+  return { toastSuccess, toastInfo, toastError };
+};