生产管理系统 - 登录，二维码功能集成

crop-x/src/components/auth/AuthContext.tsx

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+'use client';
+
+import React, { createContext, useContext, useState, ReactNode } from 'react';
+
+interface User {
+  id: string;
+  username: string;
+  realName: string;
+  email?: string;
+  phone?: string;
+  enterpriseId?: string;
+}
+
+interface AuthContextType {
+  user: User | null;
+  login: (user: User) => void;
+  logout: () => void;
+  isAuthenticated: boolean;
+}
+
+const AuthContext = createContext<AuthContextType | undefined>(undefined);
+
+interface AuthProviderProps {
+  children: ReactNode;
+}
+
+export function AuthProvider({ children }: AuthProviderProps) {
+  const [user, setUser] = useState<User | null>(null);
+
+  const login = (userData: User) => {
+    setUser(userData);
+    // 存储到 localStorage
+    localStorage.setItem('user', JSON.stringify(userData));
+  };
+
+  const logout = () => {
+    setUser(null);
+    localStorage.removeItem('user');
+  };
+
+  // 初始化时检查 localStorage
+  React.useEffect(() => {
+    const storedUser = localStorage.getItem('user');
+    if (storedUser) {
+      try {
+        setUser(JSON.parse(storedUser));
+      } catch (error) {
+        console.error('Failed to parse stored user data:', error);
+        localStorage.removeItem('user');
+      }
+    }
+  }, []);
+
+  const value: AuthContextType = {
+    user,
+    login,
+    logout,
+    isAuthenticated: !!user,
+  };
+
+  return <AuthContext.Provider value={value}>{children}</AuthContext.Provider>;
+}
+
+export function useAuth() {
+  const context = useContext(AuthContext);
+  if (context === undefined) {
+    throw new Error('useAuth must be used within an AuthProvider');
+  }
+  return context;
+}