FE_IASF_server/src/libs/util.js

import { _local } from "./util.db";
import { Message } from "element-ui";
import store from "@/store";
import Setting from '@/setting'
import JSEncrypt from "jsencrypt"

// 文件后缀集合
const exts = {
  video: 'mp4,mov',
  audio: 'mp3',
  img: 'jpg,png,gif',
  doc: 'doc,docx,xls,xlsx'
}
const util = {
    local: _local,
    // 筛选出有权限的站点
    getSite(list) {
			// 开启了动态路由的需要根据权限筛选站点
			if (Setting.dynamicRoute) {
				const result = []
				const auth = store.state.auth.btns
				list.map(e => {
					auth.find(n => n.includes(e.siteName)) && result.push(e)
				})
				return result
			} else {
				return list
			}
    },
    //返回格式化时间，传参例如："yyyy-MM-dd hh:mm:ss"
    formatDate(fmt, date) {
        var date = date ? date : new Date();
        var o = {
            "M+": date.getMonth() + 1,                 //月份
            "d+": date.getDate(),                    //日
            "h+": date.getHours(),                   //小时
            "m+": date.getMinutes(),                 //分
            "s+": date.getSeconds(),                 //秒
            "q+": Math.floor((date.getMonth() + 3) / 3), //季度
            "S": date.getMilliseconds()             //毫秒
        };
        if (/(y+)/.test(fmt)) {
            fmt = fmt.replace(RegExp.$1, (date.getFullYear() + "").substr(4 - RegExp.$1.length));
        }
        for (var k in o) {
            if (new RegExp("(" + k + ")").test(fmt)) {
                fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
            }
        }
        return fmt;
    },
    // 传入文件后缀判断是否是视频
    isVideo(ext) {
        if (exts.video.includes(ext)) return true;
        return false;
    },
    // 传入文件后缀判断是否是音频
    isAudio(ext) {
        if (exts.audio.includes(ext)) return true;
        return false;
    },
    // 传入文件后缀判断是否是图片
    isImg(ext) {
        if (exts.img.includes(ext.toLowerCase())) return true;
        return false;
    },
    // 传入文件后缀判断是否是pdf以外的文档
    isDoc(ext) {
        if (exts.doc.includes(ext)) return true;
        return false;
    },
    // 传入文件名和路径，下载图片视频，支持跨域，a标签加download不支持跨域
    downloadFile(fileName, url) {
        var x = new XMLHttpRequest();
        x.open("GET", url, true);
        x.responseType = "blob";
        x.onload = function(e) {
            var url = window.URL.createObjectURL(x.response);
            var a = document.createElement("a");
            a.href = url;
            a.download = fileName;
            a.click();
        };
        x.send();
    },
    // 传入文件名和数据，下载文件
    downloadFileDirect(fileName, data) {
        if ("download" in document.createElement("a")) { // 非IE下载
            const elink = document.createElement("a");
            elink.download = fileName;
            elink.style.display = "none";
            elink.href = URL.createObjectURL(data);
            document.body.appendChild(elink);
            elink.click();
            URL.revokeObjectURL(elink.href); // 释放URL 对象
            document.body.removeChild(elink);
        } else { // IE10+下载
            navigator.msSaveBlob(data, fileName);
        }
    },
    // 成功提示
    successMsg(message, duration = 3000) {
        Message.closeAll();
        return Message.success({ message, showClose: true, offset: (document.documentElement.clientHeight - 40) / 2, duration });
    },
    // 警告提示
    warningMsg(message, duration = 3000) {
        Message.closeAll();
        return Message.warning({ message, showClose: true, offset: (document.documentElement.clientHeight - 40) / 2, duration });
    },
    // 错误提示
    errorMsg(message, duration = 3000) {
        Message.closeAll();
        return Message.error({ message, showClose: true, offset: (document.documentElement.clientHeight - 40) / 2, duration });
    },
		// rsa加密
		rsa(data) {
			const jse = new JSEncrypt(); // 实例化一个 jsEncrypt 对象
      jse.setPublicKey(Setting.publicKey); //配置公钥
      return jse.encrypt(JSON.stringify(data))
		},
};

export default util;