diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e144f8d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+summerizer.py
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..684b75e
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,4 @@
+FROM ubuntu:latest
+LABEL authors="hzhang"
+
+ENTRYPOINT ["top", "-b"]
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 0964988..e8afce5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,6 +9,7 @@
       "version": "1.0.0",
       "license": "ISC",
       "dependencies": {
+        "oidc-client-ts": "^3.1.0",
         "react": "^18.3.1",
         "react-dom": "^18.3.1",
         "react-router-dom": "^7.0.1"
@@ -4521,6 +4522,14 @@
         "node": ">=6"
       }
     },
+    "node_modules/jwt-decode": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/jwt-decode/-/jwt-decode-4.0.0.tgz",
+      "integrity": "sha512-+KJGIyHgkGuIq3IEBNftfhW/LfWhXUIY6OmyVWjliu5KH1y0fw7VQ8YndE2O4qZdMSd9SqbnC8GOcZEy0Om7sA==",
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/kind-of": {
       "version": "6.0.3",
       "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-6.0.3.tgz",
@@ -4829,6 +4838,17 @@
       "integrity": "sha512-PX1wu0AmAdPqOL1mWhqmlOd8kOIZQwGZw6rh7uby9fTc5lhaOWFLX3I6R1hrF9k3zUY40e6igsLGkDXK92LJNg==",
       "dev": true
     },
+    "node_modules/oidc-client-ts": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/oidc-client-ts/-/oidc-client-ts-3.1.0.tgz",
+      "integrity": "sha512-IDopEXjiwjkmJLYZo6BTlvwOtnlSniWZkKZoXforC/oLZHC9wkIxd25Kwtmo5yKFMMVcsp3JY6bhcNJqdYk8+g==",
+      "dependencies": {
+        "jwt-decode": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/on-finished": {
       "version": "2.4.1",
       "resolved": "https://registry.npmjs.org/on-finished/-/on-finished-2.4.1.tgz",
diff --git a/package.json b/package.json
index db92e28..d26a0b7 100644
--- a/package.json
+++ b/package.json
@@ -12,6 +12,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
+    "oidc-client-ts": "^3.1.0",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
     "react-router-dom": "^7.0.1"
diff --git a/src/AuthProvider.js b/src/AuthProvider.js
new file mode 100644
index 0000000..668d852
--- /dev/null
+++ b/src/AuthProvider.js
@@ -0,0 +1,30 @@
+import React, { createContext, useEffect, useState } from "react";
+import { UserManager } from "oidc-client-ts";
+import {oidcConfig} from "./oicdConfig";
+
+
+export const AuthContext = createContext();
+
+const AuthProvider = ({ children }) => {
+    const [user, setUser] = useState(null);
+    const userManager = new UserManager(oidcConfig);
+
+    useEffect(() => {
+        userManager.getUser().then((user) => {
+            if (user && !user.expired) {
+                setUser(user);
+            }
+        });
+    }, [userManager]);
+
+    const login = () => userManager.signinRedirect();
+    const logout = () => userManager.signoutRedirect();
+
+    return (
+        <AuthContext.Provider value={{ user, login, logout }}>
+            {children}
+        </AuthContext.Provider>
+    );
+};
+
+export default AuthProvider;
\ No newline at end of file
diff --git a/src/Callback.js b/src/Callback.js
new file mode 100644
index 0000000..7e8a466
--- /dev/null
+++ b/src/Callback.js
@@ -0,0 +1,17 @@
+import React, { useEffect } from "react";
+import { UserManager } from "oidc-client-ts";
+import {oidcConfig} from "./oicdConfig";
+
+
+const Callback = () => {
+    useEffect(() => {
+        const userManager = new UserManager(oidcConfig);
+        userManager.signinRedirectCallback().then(() => {
+            window.location.href = "/";
+        });
+    }, []);
+
+    return <div>Logging in...</div>;
+};
+
+export default Callback;
\ No newline at end of file
diff --git a/src/components/MainNavigation.js b/src/components/MainNavigation.js
index 2e41d65..34e6b04 100644
--- a/src/components/MainNavigation.js
+++ b/src/components/MainNavigation.js
@@ -1,16 +1,28 @@
 //src/components/MainNavigation.js
 
-import React from "react";
+import React, {useContext} from "react";
 import { Link } from "react-router-dom";
 import "./MainNavigation.css";
+import {AuthContext} from "../AuthProvider";
 
 const MainNavigation = () => {
+    const { user, login, logout } = useContext(AuthContext);
     return (
         <nav className="main-navigation">
             <ul>
                 <li>
                     <Link to="/">Home</Link>
                 </li>
+                {user ? (
+                    <div>
+                        <h1>{user.profile.name}</h1>
+                        <button onClick={logout}>Logout</button>
+                    </div>
+                ) : (
+                    <button onClick={login}>Login</button>
+                )
+
+                }
                 <li>
                     <Link to="/login">Login</Link>
                 </li>
diff --git a/src/oicdConfig.js b/src/oicdConfig.js
new file mode 100644
index 0000000..700fbbe
--- /dev/null
+++ b/src/oicdConfig.js
@@ -0,0 +1,8 @@
+export const oidcConfig = {
+    authority: "https://login.hangman-lab.top/auth/realms/myrealm",
+    client_id: "your-client-id",
+    redirect_uri: "http://localhost:3000/callback",
+    post_logout_redirect_uri: "http://localhost:3000",
+    response_type: "code",
+    scope: "openid profile email",
+};
\ No newline at end of file
diff --git a/src/utils/fetchWIthCache.js b/src/utils/fetchWIthCache.js
index 808845e..7a2defb 100644
--- a/src/utils/fetchWIthCache.js
+++ b/src/utils/fetchWIthCache.js
@@ -1,4 +1,10 @@
+const ongoingRequests = new Map();
+
 export async function fetchWithCache(url, cacheKey = url, cacheExpiry = 60) {
+    if (ongoingRequests.has(url)) {
+        return ongoingRequests.get(url);
+    }
+
     const cachedData = localStorage.getItem(cacheKey);
     const now = Date.now();
 
@@ -12,13 +18,23 @@ export async function fetchWithCache(url, cacheKey = url, cacheExpiry = 60) {
         }
     }
 
-    const response = await fetch(url);
-    if (!response.ok) {
-        throw new Error(`HTTP error! Status: ${response.status}`);
+    try {
+        const fetchPromise = fetch(url)
+            .then((response) => {
+                if (!response.ok) {
+                    throw new Error(`HTTP error! Status: ${response.status}`);
+                }
+                return response.json();
+            })
+            .then((data) => {
+                localStorage.setItem(cacheKey, JSON.stringify({ data, timestamp: now }));
+                ongoingRequests.delete(url);
+                return data;
+            });
+        ongoingRequests.set(url, fetchPromise);
+        return await fetchPromise;
+    } catch (error) {
+        ongoingRequests.delete(url);
+        throw error;
     }
-    const data = await response.json();
-
-    localStorage.setItem(cacheKey, JSON.stringify({ data, timestamp: now }));
-
-    return data;
 }
\ No newline at end of file