// ==UserScript==
// @name Douban Book Bar
// @namespace DoubanBookBar
// @license MIT
// @author ElvisKang<elviskang@foxmail.com>
// @description 以最优惠的价格买到最心仪的书
// @include *://www.amazon.cn/*
// @include *://item.jd.com/*
// @include *://product.dangdang.com/*
// @include *://product.china-pub.com/*
// @include *://product.suning.com/*
// @include *://www.suning.com/emall/*
// @include *://www.duokan.com/book/*
// @include *://www.winxuan.com/product/*
// @include *://www.ituring.com.cn/*
// @include *://www.epubit.com/*
// @include *://detail.tmall.com/*
// @include *://item.taobao.com/*
// @version ver 1.2.23
// @grant GM_xmlhttpRequest
// @grant GM_addStyle
// ==/UserScript==
//用于解决greasemonkey在iframe中运行的问题,避免脚本多次运行
if (window.top === window.self) {
(function () {
"use strict";
//全局变量(构造函数)声明区
//包含支持的网站列表以及当前网站对象
var sitesContainer = {
//以下划线开头的属性为访问器属性
_siteList: [], //插件支持的网页
_curSite: null, //当前网页
_siteNameList: [],
addSites: function (sitesArray) {
if (Array.isArray(sitesArray)) {
this._siteList = this.list.concat(sitesArray);
var that = this;
sitesArray.forEach(function (value) {
that.nameList.push(value.name);
});
}
},
get list() {
return this._siteList;
},
get nameList() {
return this._siteNameList;
},
get curSite() {
return this._curSite;
},
set curSite(href) {
//通过对象中的checker属性匹配网站
var i,
len = this.list.length;
for (i = 0; i < len; i++) {
var checker = this.list[i].checker;
if (checker.test && checker.test(href)) {
this._curSite = this.list[i];
}
}
}
};
function SupportSite(siteInfo) {
if (typeof siteInfo === "object") {
for (var props in siteInfo) {
if (siteInfo.hasOwnProperty(props)) {
this[props] = siteInfo[props];
}
}
}
}
SupportSite.prototype.createDoubanBar = function (bookInfo, priceList) {
var insertPosition = document.querySelector(this.insertPosition);
if (!insertPosition) {
log("-Error: 网页发生变动，插入位置没有找到");
return;
}
log(bookInfo.isbn);
var infoRowContainer = createInfoRowContainer();
var scoreSpan = createScoreSpan(bookInfo);
infoRowContainer.appendChild(scoreSpan);
setBaseCss();
var bar = createBar(infoRowContainer);
insertBar(bar, insertPosition);
};
var Amazon = new SupportSite({
name: "亚马逊",
checker: /(https?:\/\/)?(www)?\.amazon\.(com|cn)\/.*/,
logo: "https://www.amazon.cn/favicon.ico",
getISBN: function () {
var contents = document.querySelectorAll("div.content b");
for (var i = 0; i < contents.length; i++) {
var info = contents[i];
if (info && info.textContent === "ISBN:") {
return info.nextSibling.data.split(",")[0].substring(1);
}
}
},
insertPosition: "#tmmSwatches"
});
var TMall = new SupportSite({
name: "天猫",
checker: /(https?:\/\/)?(detail)?\.tmall\.com\/.*/,
logo: "https://www.tmall.com/favicon.ico",
getISBN: function () {
var items = document.querySelectorAll("#J_AttrUL li");
for (var i = 0; i < items.length; i++) {
var info = items[i];
if (info.innerText) {
var result = info.innerText.match(/ISBN[^0-9]*(\d+)/i)
if (result) {
return result[1]
}
}
}
},
insertPosition: ".tb-meta"
});
var Taobao = new SupportSite({
name: "淘宝",
checker: /(https?:\/\/)?(item)?\.taobao\.com\/.*/,
logo: "https://www.taobao.com/favicon.ico",
getISBN: function () {
var items = document.querySelectorAll(".attributes-list li");
for (var i = 0; i < items.length; i++) {
var info = items[i];
if (info.innerText) {
var result = info.innerText.match(/ISBN[^0-9]*(\d+)/i)
if (result) {
return result[1]
}
}
}
},
insertPosition: ".tb-meta"
});
var JD = new SupportSite({
name: "京东商城",
checker: /(https?:\/\/)?(www|item)?\.jd\.com\/.*/,
logo: "https://www.jd.com/favicon.ico",
getISBN: function () {
var liContent = document.querySelector("#parameter2 > li:nth-child(2)").innerHTML;
if (liContent.match(/^ISBN/) !== null) {
return liContent.split("：")[1];
}
return null;
},
insertPosition: "#summary-price"
});
var Dangdang = new SupportSite({
name: "当当网",
checker: /(https?:\/\/)?(www|product)?\.dangdang\.com\/.*/,
logo: "https://www.dangdang.com/favicon.ico",
getISBN: function () {
var scanItems = document.querySelectorAll("#detail_describe li");
for (var i = 0; i < scanItems.length; i++) {
var splitResult = scanItems[i].innerText.split('ISBN：');
if (splitResult.length === 2) {
return splitResult[1];
}
}
},
insertPosition: ".messbox_info"
});
var Chinapub = new SupportSite({
name: "China-pub",
checker: /(https?:\/\/)?(product|www)\.china\-pub\.com\/.*/,
logo: "https://www.china-pub.com/favicon.ico",
getISBN: function () {
var list = document.querySelectorAll("#con_a_1 li");
for (var i = 0; i < list.length; i++) {
if (list[i].innerHTML.split("：")[0] === "ISBN") {
return list[i].innerHTML.split("：")[1].replace(/<.*?>/g, "").match(/[0-9]*/g).join("");
}
}
},
insertPosition: ".pro_buy_star"
});
var Suning = new SupportSite({
name: "苏宁易购",
checker: /(https?:\/\/)?(product)\.suning\.com\/.*/,
logo: "https://www.suning.com/favicon.ico",
getISBN: function () {
var isbn = document.querySelector("#bookParameterField > dl:nth-child(4) > dd:nth-child(2)");
return isbn.innerHTML;
},
insertPosition: "#existPrice"
});
//苏宁第三方(文轩等)
var SuningThird = new SupportSite({
name: "苏宁易购第三方",
checker: /(https?:\/\/)?(www)?\.suning\.com\/emall\/.*/,
logo: "https://www.suning.com/favicon.ico",
getISBN: function () {
var isbn = document.querySelector("li.li-b:nth-child(11) > span:nth-child(2)");
return isbn.innerHTML;
},
insertPosition: "#productInfoUl"
});
var WinXuan = new SupportSite({
name: "文轩网",
checker: /(https?:\/\/)?(www)\.winxuan\.com\/.*/,
logo: "https://www.winxuan.com/favicon.ico",
insertPosition: "div.name:nth-child(1)",
getISBN: function () {
var contents = document.querySelectorAll(".list-text-3>li");
//目前文轩网的ISBN位于列表的最后一项，考虑到以后的位置可能发生改变，所以从后往前遍历列表
var i = contents.length;
for (; i--;) {
var text = contents[i].textContent;
var textChecker = /^I S B N：/;
if (text && textChecker.test(text)) {
return text.split("：")[1];
}
}
}
});
var DuoKan = new SupportSite({
name: "多看阅读",
isEBook: true,
checker: /(https?:\/\/)?(www)\.duokan\.com\/.*/,
logo: "https://www.duokan.com/favicon.ico",
getISBN: function () {
var isbn = document.querySelector("span.isbn");
return isbn.innerHTML;
},
insertPosition: "div[itemprop=aggregateRating]"
});
var ituring = new SupportSite({
name: "图灵社区",
checker: /(http?:\/\/)?(www)?\.ituring\.com\.cn\/book\/.*/,
logo: "https://www.ituring.com.cn/favicon.ico",
getISBN: function () {
var tlContent = document.querySelectorAll(".publish-info li");
var patt = /(\d+-){3,4}(?:\d+|X)/;
for (var i = 0; i < tlContent.length; i++) {
if (patt.test(tlContent[i].textContent)) {
return tlContent[i].innerHTML.match(patt)[0].replace(new RegExp(/(-)/g), '');
}
}
return null;
},
insertPosition: "div.book-status"
});
var epubit = new SupportSite({
name: "异步社区",
checker: /(https?:\/\/)?(www)?\.epubit\.com\/book\/detail\/.*/,
logo: "https://www.epubit.com/static/epubit/img/favicon.ico",
getISBN: function () {
var metas = document.getElementsByTagName('meta');
var ybPatt = /(\d+-){3,4}(?:\d+|X)/;
for (var i = 0; i < metas.length; i++) {
if(metas[i].getAttribute("http-equiv")==="keywords"){
if(ybPatt.test(metas[i].getAttribute("content"))){
return metas[i].getAttribute("content").match(ybPatt)[0].replace(new RegExp(/(-)/g), '');
}
}
}
return null;
},
insertPosition: "p.col-gray-12.book_btns"
});
//全局函数声明区
function log(msg) {
console.log("DoubanBookBar: " + msg);
}
//调用API设置比价栏的CSS属性
function setBaseCss() {
var baseCSS = [
"#bookbar-container a {color:#228A31 !important;text-decoration:none;font-size: 13px;}",
"#bookbar-container .bookbar-title {font-size: 14px;width:70px;}",
"#bookbar-container span {margin-right: 5px;display: inline-block;font-size: 13px;font-weight: bold;}",
"#bookbar-container ul {padding-left: 0;margin: 4px 0;}",
"#bookbar-container li {list-style: none none outside; display: inline;padding: 0 4px;}",
"#bookbar-container img{ height:16px; width:16px;}",
"#avgScore {color:#DC0000 !important;}"
].join("");
GM_addStyle(baseCSS);
}
// create* ----生成比价栏相关的函数
//创建比价栏的调用控制函数在SupportSite对象的原型链中
//星级信息
function createStarSpan(score) {
var starSpan = document.createElement("span");
starSpan.id = "bookbar-star";
var bgPosition = "0 " + (-15) * (10 - Math.floor(parseFloat(score) + 0.8)) + "px";
var starSpanCSS = [
"#bookbar-star { ",
"background :url(https://img3.doubanio.com/f/shire/680a4bc4c384199245b080c7104da5be8ed717d3/pics/rating_icons/ic_rating_m.png) no-repeat scroll " + bgPosition + " ; ",
"width:75px; height: 15px; position: relative; top: 1px;}"
].join("");
GM_addStyle(starSpanCSS);
return starSpan;
}
//得分与评价信息
function createScoreSpan(bookInfo) {
var bookID = bookInfo.isbn,
bookRating = bookInfo.rating || {},
numRaters = bookRating.count,
averageScore = bookRating.value;
var scoreSpan = document.createElement("span"),
infoUl = document.createElement("ul"),
commentsLink = document.createElement("li"),
bookInfoLink = document.createElement("li");
if (numRaters === 0) {
commentsLink.innerHTML = "<span>没有人评价这本书</span>";
} else if (numRaters < 10) {
commentsLink.innerHTML = "<span>少于10人评价这本书</span>";
} else if (numRaters >= 10) {
commentsLink.innerHTML = '<a href="https://book.douban.com/subject/' + bookID + '/collections" target="_blank">(共' + numRaters + '人评价)</a>';
} else {
//获取信息出现错误
commentsLink.innerHTML = "";
}
if (commentsLink.innerHTML !== "") {
var avgLi = document.createElement("li"),
starLi = document.createElement("li"),
starSpan = createStarSpan(averageScore);
avgLi.innerHTML = '<span>' + averageScore + '</span>';
avgLi.id = "avgScore";
starLi.appendChild(starSpan);
infoUl.appendChild(avgLi);
bookInfoLink.innerHTML = '<a href="' + bookInfo.url + '" target="_blank" >(去豆瓣看这本书)</a>';
infoUl.appendChild(starLi);
infoUl.appendChild(commentsLink);
} else {
bookInfoLink.innerHTML = '<a href="https://book.douban.com" target="_blank">没在豆瓣找到这本书,去豆瓣逛逛?</a>';
}
infoUl.appendChild(bookInfoLink);
scoreSpan.appendChild(infoUl);
return scoreSpan;
}
//由 createContrastPriceInfo 函数调用
//生成每一个价格<li>标签
function createPriceLi(iconLink, priceData, sitePrice) {
var priceLi = document.createElement("li"),
link = document.createElement("a"),
img = document.createElement("img");
img.src = iconLink;
link.href = priceData.href || "#";
link.target = "_blank";
if (priceData.price === undefined) {
link.textContent = "[没找到]";
} else {
link.textContent = "￥" + priceData.price;
if (sitePrice !== -1) {
var difference = parseFloat(priceData.price) - parseFloat(sitePrice);
var sgn = difference > 0 ? "+" : "";
link.textContent += "( " + sgn + difference.toFixed(2) + " )";
}
}
priceLi.appendChild(img);
priceLi.appendChild(link);
return priceLi;
}
//价格(其他网站)信息
function createContrastPriceInfo(priceList) {
var contrastPriceInfo = document.createElement("span"),
infoContainer = document.createElement("ul");
if (priceList.length === 0) {
contrastPriceInfo.innerHTML = "<span>豆瓣上没有购买信息</span>";
} else {
for (var i = 0, len = priceList.length; i < len; i++) {
var matchIndex = sitesContainer.nameList.indexOf(priceList[i].name);
var priceLi = createPriceLi(sitesContainer.list[matchIndex].logo, priceList[i], priceList.curSitePrice);
infoContainer.appendChild(priceLi);
}
}
contrastPriceInfo.appendChild(infoContainer);
return contrastPriceInfo;
}
function createBar(infoRow) {
var bar = document.createElement("div");
bar.id = "bookbar-container";
bar.appendChild(infoRow);
return bar;
}
function createPriceRowContainer() {
var container = document.createElement("div"),
label = document.createElement("span");
container.id = "bookbar-priceInfo";
label.innerHTML = "比价:";
label.className = "bookbar-title";
container.appendChild(label);
return container;
}
function createInfoRowContainer() {
var container = document.createElement("div"),
label = document.createElement("span");
container.id = "bookbar-doubanInfo";
label.className = "bookbar-title";
label.innerHTML = "豆瓣评分:";
container.appendChild(label);
return container;
}
function insertBar(bar, position) {
var parent = position.parentNode;
if (parent.lastChild === position) {
parent.appendChild(bar);
}
else {
parent.insertBefore(bar, position.nextSibling);
}
}
// 获取书籍信息
function getBookInfo(isbn) {
if (!isbn) {
return null;
}
GM_xmlhttpRequest({
method: "get",
url: "https://book.feelyou.top/isbn/" + isbn,
onload: function (result) {
var bookInfo = JSON.parse(result.responseText);
getBookPrice(bookInfo);
},
onerror: function (result) {
log("-Error:获取书籍信息失败");
}
});
}
function getBookPrice(bookInfo) {
var priceList = [];
sitesContainer.curSite.createDoubanBar(bookInfo, priceList);
}
function run() {
sitesContainer.addSites([Amazon, TMall, Taobao, JD, Dangdang, Chinapub, Suning, SuningThird, DuoKan, WinXuan, ituring, epubit]);
sitesContainer.curSite = location.href;
if (!sitesContainer.curSite) {
log("-Error: 不支持当前的页面");
return;
}
var isbn = sitesContainer.curSite.getISBN();
if (!isbn) {
log("-Error: 无法获取ISBN");
return;
} else {
log("-Success: 成功获取ISBN: " + isbn);
//异步调用的Ajax ,所以之后需要调用的函数都封装到ajax当中
getBookInfo(isbn);
}
}
//代码执行区
run();
})();
}
