import axios, { AxiosError, AxiosResponse, InternalAxiosRequestConfig } from 'axios';
import envConfig from '../../env';
import Cookies from 'js-cookie';
import { message } from 'antd';

const API_BASE_URL = envConfig.baseURL;

const api = axios.create({
	baseURL: API_BASE_URL,
	timeout: 50000,
	headers: {
		'Content-Type': 'application/json',
	},
	withCredentials: true,
});

// 请求拦截器
api.interceptors.request.use(
	(config: InternalAxiosRequestConfig) => {
		const token = localStorage.getItem('token');
		if (token && config.headers) {
			config.headers['Authorization'] = `Bearer ${token}`;
		}
		return config;
	},
	(error: AxiosError) => {
		return Promise.reject(error);
	}
);

// 统一登出跳转方法
const handleLogoutAndRedirect = () => {
	localStorage.clear();
	Cookies.remove('userId');
	Cookies.remove('Admin-Token');

	// 动态导入避免循环依赖
	import('../store').then(store => {
		import('../store/userSlice').then(({ logout }) => {
			store.default.dispatch(logout());
		});
	});

	message.error('登录已过期，请重新登录');
	setTimeout(() => {
		window.location.href = '/login';
	}, 800);
};

// 响应拦截器
api.interceptors.response.use(
	(response: AxiosResponse) => {
		const data = response.data;

		// ==============================================
		// 👇 重点：如果接口返回 code = 401，直接跳转登录
		// ==============================================
		if (data?.code == 401) {
			handleLogoutAndRedirect();
			return Promise.reject(new Error('登录已过期'));
		}

		return data;
	},
	async (error: AxiosError) => {
		// 网络异常 / 服务器挂了
		if (!error.response) {
			message.error('服务异常或网络断开，即将重新登录');
			handleLogoutAndRedirect();
			return Promise.reject(error);
		}

		// HTTP 401
		if (error.response.status === 401) {
			handleLogoutAndRedirect();
			return Promise.reject(error);
		}

		return Promise.reject(error);
	}
);

export default api;