// ==UserScript==
// @name              bookget
// @author            songshu
// @description       某些学校分享电子书，提取图片进行打印。
// @version           2020.2.14.02
// @include           https://book.yunzhan365.com/mmdh/lgqf/mobile/*
// @run-at            document-end
// @namespace         https://greasyfork.org/zh-CN/users/songshu
// @license           The MIT License (MIT); http://opensource.org/licenses/MIT
// @downloadURL none
// ==/UserScript==
(function () {
  'use strict';
  //alert("欢迎使用图片提取插件");
  //添加图片一键提取
setTimeout(clock, 2000);
  
  function clock(){
  getbook("tmpContainer");
  function getbook(divID) {//bookContainer getbook("bookContainer");
  var modmenut,
  AnYigetjpg;
  modmenut = document.getElementById(divID);
  if (modmenut) {

    AnYigetjpg = document.createElement('div');
    AnYigetjpg.innerHTML = '<div  style="z-index:99999;margin-top: 2px;left:70px;right:auto ; position: fixed;bottom: 100px;background:#28c0c6;border:1px #cdcdcd solid; ">  <button id="getjpg"  name="getjpg" ><span style="font-size: 22px;margin:3px;">获得图片</span>';
    modmenut.insertBefore(AnYigetjpg, modmenut.firstchild);
    //modmenut.innerHTML = AnYigetjpg.innerHTML;
     } 
  }
    document.getElementById('tmpContainer').addEventListener('click', showjpg, false); //默认已回复;

  }
  
  function showjpg(){//显示已获取的图片地址
    var i;//初始页
    var page;//初始页
    var phtml;//图片地址。
    i=1;
    page="page1";
    phtml="";
    while(ifdivid(page)){
      var jpgurl=gethref(page);
      phtml=phtml+ "<a target=\"_blank\" href='"+jpgurl+"'>"+page+"</a>";
         i=i+1;
      page="page"+i;
    }
    //alert(phtml);
    var showjpgdiv;
    var getjpgdiv = document.getElementById("tmpContainer");
    showjpgdiv= document.createElement('div');
    showjpgdiv.innerHTML = '<div style="z-index:1005;margin-top: 2px;left:70px;right:auto ; position: fixed;bottom: 400px;background:#28c0c6;border:1px #cdcdcd solid; ">'+phtml+'</div>';
    //getjpgdiv.innerHTML = showjpgdiv.innerHTML ;
    getjpgdiv.insertBefore(showjpgdiv,getjpgdiv.firstchild);
  }
  
  function ifdivid(divID){//判断是否存在该id
    var domi;
    domi = document.getElementById(divID);
    if(domi){
      return 1; 
    }
    else return 0;
  }
  
  function gethref(page){
    var jpgdiv= document.getElementById(page).getElementsByTagName("div");
    var jpgget= jpgdiv[0].getElementsByTagName("img");
    var imgurl=jpgget[0].src;
     imgurl=imgurl.substring(0, imgurl.indexOf("?"));
    return imgurl;
    
  }
  
}) ();