import {
	http,
	toast
} from '@/uni_modules/uview-plus'
import store from '@/store'
import {
	DEVE_URL,
	PRODUCT_URL
} from '@/common/config.js'
import {
	login
} from '../../config/api.js'


import {
	Base64
} from 'js-base64'
const CODE_MESSAGE = {
	0: '未可知错误，可能是因为后端不支持跨域CORS、接口地址不存在等问题引起',
	200: '服务器成功返回请求数据',
	201: '新建或修改数据成功',
	202: '一个请求已经进入后台排队(异步任务)',
	204: '删除数据成功',
	400: '发出信息有误',
	401: '用户没有权限(令牌失效、用户名、密码错误、登录过期)',
	402: '令牌过期',
	403: '用户得到授权，但是访问是被禁止的',
	404: '访问资源不存在',
	406: '请求格式不可得',
	410: '请求资源被永久删除，且不会被看到',
	500: '服务器发生错误',
	502: '网关错误',
	503: '服务不可用，服务器暂时过载或维护',
	504: '网关超时',
}

let refreshToking = false
let requests = []

let baseURL = process.env.NODE_ENV === 'development' ? DEVE_URL : PRODUCT_URL
// #ifdef H5
baseURL = ''
// #endif

// 全局配置
http.setConfig((config) => {
	config.baseURL = baseURL
	return config
})

let loadingTimer = null;
let loadingCount = 0;

const showLoading = () => {
	loadingCount++;
	if (loadingCount === 1) {
		// 延迟显示loading，避免闪烁
		loadingTimer = setTimeout(() => {
			uni.showLoading({
				mask: true
			});
		}, 300); // 300ms延迟
	}
};

const hideLoading = () => {
	loadingCount--;
	if (loadingCount === 0) {
		if (loadingTimer) {
			clearTimeout(loadingTimer);
			loadingTimer = null;
		}
		uni.hideLoading();

	}
};

const requestInterceptors = (vm) => {
	/**
	 * 请求拦截
	 */
	http.interceptors.request.use((config) => {
		config.baseURL = baseURL
		// 初始化请求拦截器时，会执行此方法，此时data为undefined，赋予默认{}
		config.data = config.data || {}
		// 添加token
		let token = uni.getStorageSync('access_token')
		if (token) config.header['Blade-Auth'] = `Bearer ${token}`

		// 添加基础认证
		config.header['Authorization'] = `Basic ${Base64.encode('saber:saber_secret')}`

		uni.showLoading({
			mask: true
		})
		setTimeout(() => {
			uni.hideLoading();
		}, 5000)
		return config
	}, (config) => {
		return Promise.reject(config)
	})
}

/**
 * 刷新令牌
 */
const tryRefreshToken = async (config) => {
	if (!refreshToking) {
		refreshToking = true
		try {
			const params = {
				grantType: 'refresh_token',
				refreshToken: uni.getStorageSync('refresh_token')
			}

			const data = await store.dispatch('refreshToken', params)

			if (data.access_token) {
				requests.forEach((cb) => cb(data.access_token))
				requests = []
				return http.request(config)
			}
		} catch (error) {
			console.error('refreshToken error =>', error)
			store.commit('userInfo', {})
			store.commit('isLogin', false)
			store.commit('access_token', '')
			store.commit('refresh_token', '')

			// 移除自动跳转到登录页面
			toast('请登录后操作')
			// 添加跳转到登录页面的逻辑
			uni.navigateTo({
				url: '/packageUser/pages/login/index'
			});
			return Promise.reject(error)
		} finally {
			refreshToking = false
		}
	} else {
		return new Promise((resolve) => {
			requests.push(() => {
				resolve(http.request(config))
			})
		})
	}
}

const responseInterceptors = (vm) => {
	/**
	 * 响应拦截
	 */
	http.interceptors.response.use(async (response) => {
		const data = response.data
		uni.hideLoading()
		// 成功状态判断
		if (data.success && data.success == 'true' || data.Code == 0) {
			return data
		}

		// 状态码处理
		switch (data.code) {
			case 200:
			case 201:
				return data
			case 401:
			case 402:
				// token过期，尝试刷新
				return await tryRefreshToken(response.config)
			case 403:
				uni.navigateTo({
					url: '/pages/error/403'
				})
				return Promise.reject(data)
			case 500:
				toast('服务器错误，请稍后重试')
				return Promise.reject(data)
			default:
				// 错误提示
				const errMsg = data?.msg || data?.error_description || CODE_MESSAGE[data.code] || '请求失败'
				toast(errMsg)

				return Promise.reject(data)
		}
	}, async (error) => {
		hideLoading();
		uni.hideLoading();
		// HTTP状态码处理
		switch (error.statusCode) {
			case 401:
			case 402:
				return await tryRefreshToken(error.config)
			case 403:
				uni.navigateTo({
					url: '/pages/error/403'
				})
				break
			case 500:
				toast('服务器错误，请稍后重试')
				break
			default:
				toast('网络错误，请检查网络连接')
		}

		return Promise.reject(error)
	})

}

export {
	requestInterceptors,
	responseInterceptors
}