/**
 * 全站http配置
 *
 * axios参数说明
 * isSerialize是否开启form表单提交
 * isToken是否需要token
 */
import axios from 'axios'
import store from '@/store/'
import router from '@/router/'
import { serialize } from '@/utils/util'
import { getToken, removeToken, removeRefreshToken } from '@/utils/auth'
import { isURL, validatenull } from '@/utils/validate'
import { ElMessage } from 'element-plus'
import website from '@/config/website'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import { Base64 } from 'js-base64'
import crypto from '@/utils/crypto'

let baseUrl = import.meta.env.VITE_APP_API
// 全局未授权错误提示状态，只提示一次
let isErrorShown = false
// 全局锁机制相关变量
let isRefreshing = false // 标记当前是否正在刷新token
let refreshTokenPromise = null // 刷新token的Promise，避免重复请求

axios.defaults.timeout = 10000
//返回其他状态码
axios.defaults.validateStatus = function (status) {
	return status >= 200 && status <= 500 // 默认的
}
//跨域请求，允许保存cookie
axios.defaults.withCredentials = true
// NProgress Configuration
NProgress.configure({
	showSpinner: false,
})

//http request拦截
axios.interceptors.request.use(
	config => {
		// start progress bar
		NProgress.start()
		// 初始化错误提示状态
		isErrorShown = false
		//地址为已经配置状态则不添加前缀
		if (!isURL(config.url) && !config.url.startsWith(baseUrl)) {
			config.url = baseUrl + config.url
		}
		config.headers['areaCode'] = store.state.user.selectedAreaCode
		//安全请求header
		config.headers['Blade-Requested-With'] = 'BladeHttpRequest'
		//headers判断是否需要
		const authorization = config.authorization === false
		if (!authorization) {
			config.headers['Authorization'] = `Basic ${Base64.encode(
				`${website.clientId}:${website.clientSecret}`
			)}`
		}
		// 根据后端要求，post的data为空的话传｛｝
		if (config.method === 'post') {
			config.data = config.data || {}
		}
		//headers判断请求是否携带token
		const meta = config.meta || {}
		const isToken = meta.isToken === false
		//headers传递token是否加密
		const cryptoToken = config.cryptoToken === true
		//判断传递数据是否加密
		const cryptoData = config.cryptoData === true
		const token = getToken()
		if (token && !isToken) {
			config.headers[website.tokenHeader] = cryptoToken
				? 'crypto ' + crypto.encryptAES(token, crypto.cryptoKey)
				: 'bearer ' + token
		}
		// 开启报文加密
		// if (cryptoData) {
		//   if (config.params) {
		//     const data = crypto.encryptAES(JSON.stringify(config.params), crypto.aesKey);
		//     config.params = { data };
		//   }
		//   if (config.data) {
		//     config.text = true;
		//     config.data = crypto.encryptAES(JSON.stringify(config.data), crypto.aesKey);
		//   }
		// }
		//headers中配置text请求
		if (config.text === true) {
			config.headers['Content-Type'] = 'text/plain'
		}
		//headers中配置serialize为true开启序列化
		if (config.method === 'post' && meta.isSerialize === true) {
			config.data = serialize(config.data)
		}
		return config
	},
	error => {
		return Promise.reject(error)
	}
)

//http response拦截
axios.interceptors.response.use(
	res => {
		NProgress.done()
		//获取配置信息
		const config = res.config
		const cryptoData = config.cryptoData === true
		//解析加密报文
		if (cryptoData) {
			res.data = JSON.parse(crypto.decryptAES(res.data, crypto.aesKey))
		}
		//获取状态信息
		const status = res.data.error_code || res.data.code || res.status
		const statusWhiteList = website.statusWhiteList || []
		const message = res.data.msg || res.data.error_description || res.data.message || '系统错误'
		//如果在白名单里则自行catch逻辑处理
		if (statusWhiteList.includes(status)) return Promise.reject(res)

		// 如果是401并且没有重试过，尝试刷新token
		if (status === 401 && !config._retry) {
			config._retry = true

			// 如果当前已经在刷新token，等待刷新完成
			if (isRefreshing) {
				return refreshTokenPromise.then(() => {
					const meta = config.meta || {}
					const isToken = meta.isToken === false
					const cryptoToken = config.cryptoToken === true
					const token = getToken()
					if (token && !isToken) {
						config.headers[website.tokenHeader] = cryptoToken
							? 'crypto ' + crypto.encryptAES(token, crypto.cryptoKey)
							: 'bearer ' + token
					}
					return axios(config)
				})
			}

			// 开始刷新token
			isRefreshing = true

			// 调用RefreshToken action来刷新token
			refreshTokenPromise = store
				.dispatch('RefreshToken')
				.then(() => {
					isRefreshing = false // 重置刷新标志
					const meta = config.meta || {}
					const isToken = meta.isToken === false
					const cryptoToken = config.cryptoToken === true
					// 获取刷新后的token
					const token = getToken()
					if (token && !isToken) {
						config.headers[website.tokenHeader] = cryptoToken
							? 'crypto ' + crypto.encryptAES(token, crypto.cryptoKey)
							: 'bearer ' + token
					}
					return axios(config)
				})
				.catch(() => {
					isRefreshing = false // 重置刷新标志
					// 首次报错时提示
					if (!isErrorShown) {
						isErrorShown = true
						ElMessage({
							message: '用户令牌不可用，请重新登录',
							type: 'error',
						})
					}
					// 清除token信息
					removeToken()
					removeRefreshToken()
					// 重定向到登录页
					store.dispatch('FedLogOut').then(() => router.push({ path: '/login' }))
					return Promise.reject(new Error(message))
				})

			return refreshTokenPromise
		}

		// 如果是401并且已经重试过，直接跳转到登录页面
		if (status === 401 && config._retry) {
			if (!isErrorShown) {
				isErrorShown = true
				ElMessage({
					message: '用户令牌不可用，请重新登录',
					type: 'error',
				})
			}
			removeToken()
			removeRefreshToken()
			store.dispatch('FedLogOut').then(() => router.push({ path: '/login' }))
			return Promise.reject(new Error(message))
		}

		// 如果请求为oauth2错误码则首次报错时提示
		if (status > 2000 && !validatenull(res.data.error_description)) {
			if (!isErrorShown) {
				isErrorShown = true
				ElMessage({
					message: message,
					type: 'error',
				})
			}
			return Promise.reject(new Error(message))
		}
		// 如果请求为非200则默认统一处理
		if (status !== 200) {
			ElMessage({
				message: message,
				type: 'error',
			})
			return Promise.reject(new Error(message))
		}
		return res
	},
	error => {
		NProgress.done()
		return Promise.reject(new Error(error))
	}
)

export default axios