AuthContext.jsx
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import React, { createContext, useState, useContext, useEffect } from 'react';
const AuthContext = createContext();
export const useAuth = () => {
const context = useContext(AuthContext);
if (!context) {
throw new Error('useAuth must be used within an AuthProvider');
}
return context;
};
export const AuthProvider = ({ children }) => {
const [user, setUser] = useState(null);
const [loading, setLoading] = useState(true);
useEffect(() => {
// 检查本地存储中的用户信息
const token = localStorage.getItem('token');
const userData = localStorage.getItem('user');
if (token && userData) {
setUser(JSON.parse(userData));
}
setLoading(false);
}, []);
const login = async (email, password) => {
try {
// 模拟登录API调用
const response = await fetch('/api/auth/login', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify({ email, password }),
});
if (response.ok) {
const data = await response.json();
localStorage.setItem('token', data.token);
localStorage.setItem('user', JSON.stringify(data.user));
setUser(data.user);
return { success: true };
} else {
return { success: false, error: 'Login failed' };
}
} catch (error) {
return { success: false, error: error.message };
}
};
const register = async (userData) => {
try {
const response = await fetch('/api/auth/register', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify(userData),
});
if (response.ok) {
const data = await response.json();
localStorage.setItem('token', data.token);
localStorage.setItem('user', JSON.stringify(data.user));
setUser(data.user);
return { success: true };
} else {
return { success: false, error: 'Registration failed' };
}
} catch (error) {
return { success: false, error: error.message };
}
};
const logout = () => {
localStorage.removeItem('token');
localStorage.removeItem('user');
setUser(null);
};
const value = {
user,
login,
register,
logout,
loading,
isAuthenticated: !!user,
};
return (
<AuthContext.Provider value={value}>
{children}
</AuthContext.Provider>
);
};
export default AuthContext;