// ==UserScript==
// @name         OFD预览
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        http://*.zhbg.kjt.gx.gov/*
// @require      file://d:\OfdParser.js
// @require      file://d:\ofd.js
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    function findVue(el){
        var child = [window._Vue];
        while (child.length > 0){
            var n = child.pop();
            if(n.$el === el){
               return n;
            }
            n.$children.forEach(function(i){child.push(i)})
        }
    }


    //查找加载ofd失败后生成的div
    if (!document.querySelector('embed[type="application/ofd"] ')){ throw new Error('Whoops!')}

    //查找ofd文件的标识
    var attachGuid = findVue(document.querySelector("div#OFD").parentNode.parentNode).attachguid;
    if (!attachGuid){ throw new Error('Whoops!')}

    var httpRequest = new XMLHttpRequest();
    httpRequest.open('POST', 'http://dzgw.zhbg.kjt.gx.gov/bgtoa/rest/frame/base/attach/attachAction/getContent?isCommondto=true&attachGuid='+ attachGuid + '&contentType=undefined&fileName=undefined&t=1649214814841', true); //第二步：打开连接
    httpRequest.responseType = "arraybuffer";
    httpRequest.send('');
    httpRequest.onreadystatechange = function () {
        if (httpRequest.readyState == 4 && httpRequest.status == 200) {
            //alert(httpRequest.responseType);
            ofd.parseOfdDocument({
                ofd: httpRequest.response,
                success: function (res) {
                    var divArray = [];
                    var divs = ofd.renderOfd(res.data.ofd, 0);
                    var OfdView = document.querySelector("div#OFD");
                    while (OfdView.firstChild) {
                        OfdView.removeChild (OfdView.firstChild);
                    }
                    for(var i = 0; i < divs.length; i++){
                        OfdView.appendChild(divs[i]);
                    }

                }
            })
        }
    }


})();