JWT와 web storage로 로그인 기능을 구현합니다.

apps/realworld/src/entities/user/api/useGetUser.ts

@@ -0,0 +1,35 @@
+import {
+  getGetCurrentUserQueryKey,
+  useGetCurrentUser,
+} from '@/shared/api/realworld/endpoints/user-and-authentication/user-and-authentication';
+
+const useGetUser = () => {
+  const { data: user, isError: isLoginError } = useGetCurrentUser({
+    query: {
+      staleTime: Infinity,
+      queryKey: getGetUserQueryKey(),
+      select: data => {
+        return data.user;
+      },
+    },
+  });
+  const isLogin = Boolean(user && !isLoginError);
+
+  if (isLogin) {
+    return {
+      isLogin,
+      user: user!,
+    };
+  }
+
+  return {
+    isLogin,
+    user: null,
+  };
+};
+
+export default useGetUser;
+
+export const getGetUserQueryKey = () => {
+  return [...getGetCurrentUserQueryKey(), 'useGetUser'];
+};

apps/realworld/src/features/user/ui/index.ts

@@ -1,5 +1,6 @@
 import LoginForm from './login-form/login-form';
+import LogoutButton from './logout-button/logout-button';
 import RegisterForm from './register-form/register-form';
 import UserFollowToggleButton from './user-follow-toggle-button/user-follow-toggle-button';
 
-export { UserFollowToggleButton, LoginForm, RegisterForm };
+export { UserFollowToggleButton, LoginForm, RegisterForm, LogoutButton };

apps/realworld/src/features/user/ui/login-form/login-form.tsx

@@ -1,13 +1,33 @@
 'use client';
 
+import { getGetUserQueryKey } from '@/entities/user/api/useGetUser';
 import { useLogin } from '@/shared/api/realworld/endpoints/user-and-authentication/user-and-authentication';
+import { PathBuilder } from '@/shared/utils/routes';
+import webStorage, { StorageKey } from '@/shared/utils/webStorage';
 import { Button, Input } from '@packages/ui';
+import { useQueryClient } from '@tanstack/react-query';
+import { useRouter } from 'next/navigation';
 import React, { useState } from 'react';
 
 const LoginForm = () => {
   const [email, setEmail] = useState('');
   const [password, setPassword] = useState('');
-  const { mutateAsync: login, error: loginError, isLoading: loginLoading } = useLogin();
+  const { push } = useRouter();
+  const queryClient = useQueryClient();
+
+  const {
+    mutateAsync: login,
+    error: loginError,
+    isLoading: loginLoading,
+  } = useLogin({
+    mutation: {
+      onSuccess: async data => {
+        webStorage.setItem(StorageKey.userToken, data.user.token);
+        await queryClient.invalidateQueries(getGetUserQueryKey());
+        push(PathBuilder.buildHome().getPath());
+      },
+    },
+  });
 
   const handleChangeEmail = (_: React.ChangeEvent<HTMLInputElement>, email: string) => {
     setEmail(email);

apps/realworld/src/features/user/ui/logout-button/logout-button.tsx

@@ -0,0 +1,51 @@
+'use client';
+import { getGetUserQueryKey } from '@/entities/user/api/useGetUser';
+import { PathBuilder } from '@/shared/utils/routes';
+import webStorage, { StorageKey } from '@/shared/utils/webStorage';
+import { Button, ButtonProps } from '@packages/ui';
+import { useQueryClient } from '@tanstack/react-query';
+import { useRouter } from 'next/navigation';
+import React, { ReactNode } from 'react';
+
+interface LogoutButtonProps extends Partial<ButtonProps> {
+  children: ReactNode;
+}
+
+const LogoutButton = ({
+  children,
+  onClick,
+  color = 'error',
+  size = 'm',
+  variant = 'outlined',
+  ...rest
+}: LogoutButtonProps) => {
+  const queryClient = useQueryClient();
+  const { push } = useRouter();
+
+  const logout = async () => {
+    webStorage.removeItem(StorageKey.userToken);
+    await queryClient.invalidateQueries(getGetUserQueryKey());
+  };
+  const movePath = () => {
+    const homePath = PathBuilder.buildHome().getPath();
+    push(homePath);
+  };
+
+  return (
+    <Button
+      {...rest}
+      variant={variant}
+      color={color}
+      size={size}
+      onClick={async e => {
+        await logout();
+        movePath();
+        onClick?.(e);
+      }}
+    >
+      {children}
+    </Button>
+  );
+};
+
+export default LogoutButton;

apps/realworld/src/shared/api/realworld/axios/axiosInstance.ts

@@ -1,4 +1,5 @@
 import defaultAxios, { AxiosRequestConfig } from 'axios';
+import { authInterceptor } from './requestInterceptors/authInterceptor';
 
 const axios = defaultAxios.create({
   baseURL: 'https://api.realworld.io/api/',
@@ -8,6 +9,8 @@ const axios = defaultAxios.create({
   },
 });
 
+axios.interceptors.request.use(authInterceptor);
+
 export const axiosInstance = async <T>(config: AxiosRequestConfig): Promise<T> => {
   config.data;
   const data = await axios(config);

apps/realworld/src/shared/api/realworld/axios/requestInterceptors/authInterceptor.ts

@@ -0,0 +1,12 @@
+import webStorage, { StorageKey } from '@/shared/utils/webStorage';
+import { InternalAxiosRequestConfig } from 'axios';
+
+export const authInterceptor: (value: InternalAxiosRequestConfig) => InternalAxiosRequestConfig = config => {
+  const token = webStorage.getItem(StorageKey.userToken);
+
+  if (token) {
+    config.headers.Authorization = `Token ${token}`;
+  }
+
+  return config;
+};

apps/realworld/src/shared/utils/webStorage.ts

@@ -0,0 +1,46 @@
+import { match } from 'ts-pattern';
+
+export enum StorageKey {
+  userToken = 'u',
+}
+
+StorageKey.userToken === 'u';
+
+class WebStorage {
+  private localStorage;
+  constructor() {
+    if (typeof window !== 'undefined') {
+      this.localStorage = window.localStorage;
+    }
+  }
+
+  setItem(key: StorageKey, value: any) {
+    if (!this.localStorage) {
+      return;
+    }
+    this.localStorage.setItem(key, JSON.stringify(value));
+  }
+
+  getItem(key: StorageKey.userToken): string | null;
+  getItem(key: StorageKey) {
+    if (!this.localStorage) {
+      return null;
+    }
+    const stringifyItem = this.localStorage.getItem(key);
+
+    return match({ stringifyItem, key })
+      .with({ stringifyItem: null }, () => null)
+      .with({ key: StorageKey.userToken }, () => JSON.parse(stringifyItem!))
+      .exhaustive();
+  }
+  removeItem(key: StorageKey) {
+    if (!this.localStorage) {
+      return;
+    }
+    this.localStorage.removeItem(key);
+  }
+}
+
+const webStorage = new WebStorage();
+
+export default webStorage;

apps/realworld/src/widgets/gnb/ui/gnb/gnb.tsx

@@ -6,9 +6,13 @@ import Link from 'next/link';
 import { usePathname } from 'next/navigation';
 import React from 'react';
 import { isActiveLink } from '../../api/isActiveLink';
+import useGetUser from '@/entities/user/api/useGetUser';
+import { Avatar } from '@packages/ui';
 
 const GNB = () => {
   const pathname = usePathname();
+  const { isLogin, user } = useGetUser();
+
   const activeLinkStyle = (path: RoutePath) => {
     return isActiveLink(pathname, path) ? 'text-black' : 'text-black/30';
   };
@@ -25,16 +29,41 @@ const GNB = () => {
               <p className={`hover:text-black ${activeLinkStyle('/')}`}>Home</p>
             </Link>
           </li>
-          <li>
-            <Link data-testid="gnbSignIn" href={PathBuilder.buildLogin().getPath()} className="no-underline">
-              <p className={`hover:text-black ${activeLinkStyle('/login')}`}>Sign in</p>
-            </Link>
-          </li>
-          <li>
-            <Link data-testid="gnbSignUp" href={PathBuilder.buildRegister().getPath()} className="no-underline">
-              <p className={`hover:text-black ${activeLinkStyle('/register')}`}>Sign up</p>
-            </Link>
-          </li>
+          {isLogin ? (
+            <>
+              <li>
+                <Link data-testid="gnbEditor" href={PathBuilder.buildNewArticle().getPath()} className="no-underline">
+                  <p className={`hover:text-black ${activeLinkStyle('/editor')}`}>New Article</p>
+                </Link>
+              </li>
+              <li>
+                <Link data-testid="gnbSettings" href={PathBuilder.buildSettings().getPath()} className="no-underline">
+                  <p className={`hover:text-black ${activeLinkStyle('/settings')}`}>Settings</p>
+                </Link>
+              </li>
+              <li>
+                <Link data-testid="gnbUser" href={PathBuilder.buildUser().getPath()} className="no-underline">
+                  <p className={`flex items-center gap-4 hover:text-black ${activeLinkStyle('/user')}`}>
+                    <Avatar size="xxs" src={user.image} />
+                    {user.username}
+                  </p>
+                </Link>
+              </li>
+            </>
+          ) : (
+            <>
+              <li>
+                <Link data-testid="gnbSignIn" href={PathBuilder.buildLogin().getPath()} className="no-underline">
+                  <p className={`hover:text-black ${activeLinkStyle('/login')}`}>Sign in</p>
+                </Link>
+              </li>
+              <li>
+                <Link data-testid="gnbSignUp" href={PathBuilder.buildRegister().getPath()} className="no-underline">
+                  <p className={`hover:text-black ${activeLinkStyle('/register')}`}>Sign up</p>
+                </Link>
+              </li>
+            </>
+          )}
         </ul>
       </div>
     </nav>