Merge pull request #38 from sustech-cs304/frontend

Merge current frontend steps

Author: RoderickQiu

peachide/package-lock.json

@@ -35,7 +35,6 @@
     "next-themes": "^0.4.6",
     "object-hash": "^3.0.0",
     "react": "^19.0.0",
-    "react-day-picker": "^8.10.1",
     "react-dom": "^19.0.0",
     "react-pdf": "^9.2.1",
     "react-resizable-panels": "^2.1.7",

peachide/package.json

@@ -0,0 +1,65 @@
+"use client";
+import React, { createContext, useContext, useState, useEffect } from 'react';
+
+interface UserContextType {
+  token: string | null;
+  userId: string | null;
+  isAuthenticated: boolean;
+  login: (token: string, userId: string) => void;
+  logout: () => void;
+}
+
+const UserContext = createContext<UserContextType>({
+  token: null,
+  userId: null,
+  isAuthenticated: false,
+  login: () => {},
+  logout: () => {}
+});
+
+export const useUserContext = () => useContext(UserContext);
+
+export const UserProvider = ({ children }: { children: React.ReactNode }) => {
+  const [token, setToken] = useState<string | null>(null);
+  const [userId, setUserId] = useState<string | null>(null);
+  
+  // Initialize from localStorage on client-side
+  useEffect(() => {
+    const storedToken = localStorage.getItem('token');
+    const storedUserId = localStorage.getItem('userId');
+    
+    if (storedToken && storedUserId) {
+      setToken(storedToken);
+      setUserId(storedUserId);
+    }
+  }, []);
+
+  const login = (newToken: string, newUserId: string) => {
+    setToken(newToken);
+    setUserId(newUserId);
+    // Store in localStorage for persistence
+    localStorage.setItem('token', newToken);
+    localStorage.setItem('userId', newUserId);
+  };
+
+  const logout = () => {
+    setToken(null);
+    setUserId(null);
+    localStorage.removeItem('token');
+    localStorage.removeItem('userId');
+  };
+
+  return (
+    <UserContext.Provider
+      value={{
+        token,
+        userId,
+        isAuthenticated: !!token,
+        login,
+        logout
+      }}
+    >
+      {children}
+    </UserContext.Provider>
+  );
+};