import axios from 'axios'
import router from "@/router";
import {Message, Loading} from 'element-ui'
import {removeAll, getToken} from '@/utils/auth'
import cqcyCode from '@/utils/cqcyCode'
import {tansParams, blobValidate} from "@/utils/cqcy";
import cache from '@/plugins/cache'
import {saveAs} from 'file-saver'
import Vue from "vue";

Vue.prototype.$http = axios

let downloadLoadingInstance;
// 是否显示重新登录
export let isRelogin = {show: false};

axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8'
// 创建axios实例
const service = axios.create({
    // axios中请求配置有baseURL选项，表示请求URL公共部分
    baseURL: cqcyCode['protocol'] + cqcyCode['host'] + ':' + cqcyCode['port'],
    // 超时
    timeout: 30000
})

// request拦截器
service.interceptors.request.use(config => {
    // 是否需要设置 token
    const isToken = (config.headers || {}).isToken === false
    // 是否需要防止数据重复提交
    const isRepeatSubmit = (config.headers || {}).repeatSubmit === false
    if (getToken() && !isToken) {
        config.headers['Authorization'] = 'Bearer ' + getToken() // 让每个请求携带自定义token 请根据实际情况自行修改
        config.headers['token'] = getToken()
    }
    let sysHost = localStorage.getItem('SYS_HOST')
    if (sysHost) {
        config.baseURL = sysHost
    }
    console.log(config.baseURL)
    // get请求映射params参数
    if (config.method === 'get' && config.params) {
        let url = config.url + '?' + tansParams(config.params);
        url = url.slice(0, -1);
        config.params = {};
        config.url = url;
    }
    if (!isRepeatSubmit && (config.method === 'post' || config.method === 'put')) {
        const requestObj = {
            url: config.url,
            data: typeof config.data === 'object' ? JSON.stringify(config.data) : config.data,
            time: new Date().getTime()
        }
        const sessionObj = cache.session.getJSON('sessionObj')
        if (sessionObj === undefined || sessionObj === null || sessionObj === '') {
            try {
                cache.session.setJSON('sessionObj', requestObj)
            } catch (e) {}
        } else {
            const s_url = sessionObj.url;                  // 请求地址
            const s_data = sessionObj.data;                // 请求数据
            const s_time = sessionObj.time;                // 请求时间
            const interval = 1000;                         // 间隔时间(ms)，小于此时间视为重复提交
            if (s_data === requestObj.data && requestObj.time - s_time < interval && s_url === requestObj.url) {
                const message = cqcyCode[901];
                console.warn(`[${s_url}]: ` + message)
                return Promise.reject(new Error(message))
            } else {
                try {
                    cache.session.setJSON('sessionObj', requestObj)
                } catch (e) {}
            }
        }
    }
    return config
}, error => {
    console.log(error)
    Promise.reject(error)
})

// 响应拦截器
service.interceptors.response.use(res => {
        // 未设置状态码则默认成功状态
        const code = res.data.code || 200
        // 获取错误信息
        const msg = cqcyCode[code] || res.data.msg || cqcyCode['default']
        // 二进制数据则直接返回
        if (res.request.responseType === 'blob' || res.request.responseType === 'arraybuffer') {
            return res.data
        }
        if (code === 401 || code === 403) {
            // if (!isRelogin.show) {
            //     isRelogin.show = true
            //     let tips = code === 401 ? '登录状态已过期，请重新登录' : res.data.msg
            //     MessageBox.alert(tips, '系统提示', {
            //         confirmButtonText: '确定',
            //         showClose: false
            //     }).then(r => {
            //         isRelogin.show = false
            //         removeAll()
            //         router.push({path: '/', query: {}})
            //         window.location.reload()
            //         // logout().then(res => {
            //         //     removeAll()
            //         //     // location.href = '/index'
            //         //     router.push({path: '/', query: {}})
            //         //     window.location.reload()
            //         // });
            //     })
            //     return Promise.reject('无效的会话，或者会话已过期，请重新登录。')
            // }
            setTimeout(() => {
                removeAll()
                router.push({path: '/', query: {}})
                window.location.reload()
            }, 2000)
            let tips = code === 401 ? '登录状态已过期，请重新登录' : res.data.msg
            return Promise.reject(tips)
        } else if (code === 500) {
            return Promise.reject(new Error(msg))
        } else if (code !== 200) {
            return Promise.reject(new Error(res.data.msg))
        } else {
            return res.data
        }
    },
    error => {
        let {message} = error;
        if (message == "Network Error") {
            message = cqcyCode[904];
        } else if (message.includes("timeout")) {
            message = cqcyCode[905];
        } else if (message.includes("Request failed with status code")) {
            message = "系统接口" + message.substr(message.length - 3) + "异常";
        } else {
            message = '网络错误，请稍候再试！'
        }
        // Message({
        //     message: message,
        //     type: 'error',
        //     duration: 5 * 1000
        // })
        console.warn(message)
        return Promise.reject(message)
    }
)

// 通用下载方法
export function download(url, params, filename, config) {
    downloadLoadingInstance = Loading.service({
        text: cqcyCode[903],
        spinner: "el-icon-loading",
        background: "rgba(0, 0, 0, 0.7)",
    })
    return service.post(url, params, {
        transformRequest: [(params) => {
            return tansParams(params)
        }],
        headers: {'Content-Type': 'application/x-www-form-urlencoded'},
        responseType: 'blob',
        ...config
    }).then(async (data) => {
        const isLogin = await blobValidate(data);
        if (isLogin) {
            const blob = new Blob([data])
            saveAs(blob, filename)
        } else {
            const resText = await data.text();
            const rspObj = JSON.parse(resText);
            const errMsg = cqcyCode[rspObj.code] || rspObj.msg || cqcyCode['default']
            Message.error(errMsg);
        }
        downloadLoadingInstance.close();
    }).catch((r) => {
        console.error(r)
        Message.error(cqcyCode[902])
        downloadLoadingInstance.close();
    })
}

export default service