查询广州图书馆可借阅馆藏
// ==UserScript==
// @name Douban_Gzlib
// @name:zh-CN 豆瓣x广州图书馆
// @namespace http://tampermonkey.net/
// @version 0.2.2
// @description 查询广州图书馆可借阅馆藏
// @author https://honwhy.wang
// @license GPLv3
// @match https://book.douban.com/subject/*
// @grant GM.xmlHttpRequest
// @connect opac.gzlib.org.cn
// ==/UserScript==
(async () => {
'use strict';
const info = document.querySelector("#info")
var cts = info.textContent.split(/\n/).filter(item => item.replaceAll(/\s|\t| /g,'').length> 0)
var isbn = cts[cts.length-1].match(/(\d+)/)[1]
console.log(isbn)
if(isbn) {
console.log('begin to search')
let bookHtml = await getBooks({isbn: isbn});
var ms = bookHtml.match(/bookrecno=([0-9]+)/mg);
if(ms) {
var nos = ms.map(m => {
return m.split('=')[1];
});
if(nos && nos.length > 0) {
let nameToCount = await getBorrowable(nos.join(','));
showResult(nameToCount, nos[0]);
}
} else {
showResult({});
}
}
async function getBooks(request) {
let {isbn, title} = request;
if (isbn == 0) {
return {};
}
var url = '';
if (title) {
url = `https://opac.gzlib.org.cn/opac/search?&q=${title}&searchWay=title&sortWay=score&sortOrder=desc&scWay=dim&hasholding=1&curlibcode=TH&curlibcode=NS&curlibcode=BY&curlibcode=HP&curlibcode=PY&curlibcode=YT&curlibcode=LW&curlibcode=GT&curlibcode=HZQ&searchSource=reader`;
} else {
url = `https://opac.gzlib.org.cn/opac/search?searchWay0=isbn&q0=${isbn}&logical0=AND&searchWay1=&q1=&logical1=AND&searchWay2=&q2=&searchSource=reader&marcformat=&sortWay=score&sortOrder=desc&startPubdate=&endPubdate=&rows=10&hasholding=1&curlibcode=GT&curlibcode=YT&curlibcode=HZQ&curlibcode=LW&curlibcode=TH&curlibcode=BY&curlibcode=HP&curlibcode=PY&curlibcode=NS`;
}
return new Promise((resolve, reject) => {
try {
GM.xmlHttpRequest({
method: "POST",
url: url,
//data: "username=johndoe&password=xyz123",
//headers: {
// "Content-Type": "application/x-www-form-urlencoded"
//},
onload: function(response) {
if(response.status == 200) {
var text = response.responseText;
return resolve(text);
}
return reject(Error("failed"))
}
});
} catch(e){
return reject(Error("something bad happened"))
}
})
}
async function getBorrowable(item) {
let url = `https://opac.gzlib.org.cn/opac/book/holdingPreviews?bookrecnos=${item}&curLibcodes=HZQ%2CGT%2CLW%2CYT%2CPY%2CHP%2CBY%2CNS%2CTH&return_fmt=json`;
var text = '{}';
return new Promise((resolve, reject) => {
try {
GM.xmlHttpRequest({
method: "POST",
url: url,
onload: function(response) {
if(response.status != 200) {
return reject(Error("failed"));
}
var text = response.responseText;
var json = JSON.parse(text);
let nameToCount = {};
var bookrecno = '';
if (json && json['previews']) {
Object.keys(json['previews']).forEach(key => {
// item => {bookrecno: 3005135912, callno: 'I247.57/10039', curlib: 'NS', curlibName: '南沙区图书馆', curlocal: 'NS-LHZTSS', …}
var a = json['previews'][key];
a.forEach(item => {
if(item.loanableCount > 0) {
if(nameToCount[item.curlibName]) {
nameToCount[item.curlibName] += item.loanableCount;
} else {
nameToCount[item.curlibName] = item.loanableCount;
}
}
bookrecno = item.bookrecno;
});
})
}
return resolve(nameToCount);
}
})
} catch(e) {
return reject(Error("something bad happened"))
}
})
}
function showResult(nameToCount, bookrecno) {
// set to html
var aside = document.querySelector(".aside");
var gray = document.createElement('div');
gray.classList = 'gray_ad version_works';
gray.style.display = 'block';
var h2 = document.createElement('h2');
h2.textContent = '广州图书馆可借馆藏（非官方）';
gray.appendChild(h2);
if(Object.keys(nameToCount).length == 0) {
var ul = document.createElement("ul");
ul.classList = "bs current-version-list";
var wrapper = document.createElement("div");
wrapper.classList = "cell price-btn-wrapper";
ul.appendChild(wrapper);
var buyInfo = document.createElement("div");
buyInfo.classList = "cell impression_track_mod_buyinfo";
wrapper.appendChild(buyInfo);
var cell = document.createElement("div");
cell.classList="cell";
buyInfo.appendChild(cell);
var a = document.createElement("a");
a.classList="buy-book-btn e-book-btn";
cell.appendChild(a);
var span = document.createElement("span");
span.textContent = "暂无查询结果";
a.appendChild(span);
gray.appendChild(ul);
} else {
var ul = document.createElement('ul');
let url = `https://opac.gzlib.org.cn/opac/book/${bookrecno}`;
Object.keys(nameToCount).forEach(key => {
var cnt = nameToCount[key];
var li = document.createElement('li');
li.styleList = 'mb8 pl';
var a = document.createElement('a');
a.href = url;
a.textContent = `${key} (${cnt})`;
li.appendChild(a);
ul.appendChild(li);
})
gray.appendChild(ul);
}
aside.prepend(gray);
}
})();