// ==UserScript==
        // @name	    图书互助
        // @namespace       安装在图书馆参考咨询联盟可查看SS号
        // @version	    1.0.4
        // @include	    *book.dglib.superlib.net/*
        // @include	    *book.ucdrs.superlib.net*
        // @include         *book.duxiu.com*
        // @description     可以直接显示文献的ss号或dxid进行互助，,可以秒传和生成pdf，PC、手机、MAC、苹果设备都可用，可查询全国图书馆参考咨询联盟、超星、读秀、龙岩、东莞图书馆，获取全文PDF。
        // @copyright	    pdfshuwu
        // @grant	    none
        // @namespace pdfshuwu
        // @license      MIT
// @downloadURL none
        // ==/UserScript==

  function fetchSsidByDxid(dxid) {
    var myHeaders = new Headers();
    myHeaders.append("User-Agent", "Apifox/1.0.0 (https://apifox.com)");
    myHeaders.append("Content-Type", "application/json");

    var raw = JSON.stringify({"dxDxid": dxid});

    var requestOptions = {
        method: 'POST',
        headers: myHeaders,
        body: raw,
        redirect: 'follow'
    };

    return fetch("https://apicf.pdfshuwu.com/api/front/duxiu/search", requestOptions)
        .then(response => response.json())
        .then(data => {
            if (data.code === "200" && data.data && data.data.lists && data.data.lists.length > 0) {
                return data.data.lists[0].dxSsid; // 返回SSID
            } else {
                return "查询不到书籍,数据库暂时只有2018年以内出版的";
            }
        });
}

function createBookLink(ssid) {
    var b = document.createElement("a");
    b.target = "_blank";
    b.innerText = "图书互助";
    b.style.color = 'green';
    b.style.fontSize = '14px';
    b.style.fontWeight = 'bold';
    b.href = "https://www.pdfshuwu.com/details/" + ssid;
    document.body.appendChild(b);
    return b;
}

function main() {
    var bookList = document.querySelectorAll("table.book1");
    var btnInput=document.getElementsByClassName("btnInput")
    if (bookList.length == 0) {
        bookList = document.querySelectorAll("table.books");

    }
    if (bookList.length == 0) {

       // bookList = document.querySelectorAll("table");
           bookList=document.querySelectorAll(".books li");
    }
console.log(btnInput)
    if(btnInput.length==1){
            for (var j = 0; j < bookList.length; j++) {
    (function(index) {
        var dxid = document.getElementById("dxid" + index);
        var dxidVal = dxid.value;
        fetchSsidByDxid(dxidVal).then(ssid => {
            var p = document.createElement("p");
            p.innerText = "SSID: " + ssid;
            p.style.color = 'red';
            p.style.fontSize = '16px';
            p.style.fontWeight = 'bold';
            var blink = createBookLink(ssid);
            if (blink) {
    dxid.parentNode.appendChild(p)
                  dxid.parentNode.appendChild(blink)
            }
        }).catch(error => {
            console.error('Error fetching ssid:', error);
        });
    })(j);
            }
    }else{
            for (var i = 0; i < bookList.length; i++) {
    (function(index) {
        var dxid = document.getElementById("dxid" + index);
        var dxidVal = dxid.value;
        fetchSsidByDxid(dxidVal).then(ssid => {
            var p = document.createElement("p");
            p.innerText = "SSID: " + ssid;
            p.style.color = 'red';
            p.style.fontSize = '16px';
            p.style.fontWeight = 'bold';
            var blink = createBookLink(ssid);
            if (blink) {
                var tr = document.createElement('tr');
                var td = document.createElement('td');
                td.colSpan = '3';
                td.style.paddingLeft = '3%';
                td.appendChild(p);
                td.appendChild(blink);
                tr.appendChild(td);
                dxid.parentNode.parentNode.parentNode.appendChild(tr);
            }
        }).catch(error => {
            console.error('Error fetching ssid:', error);
        });
    })(i);
}
    }


}

function detailMain() {
    var string = location.href.match(/(Number).*?(?=&)/);
    var value = string ? string[0].replace('Number=', '') : '';

    fetchSsidByDxid(value).then(ssid => {
        var p = document.createElement("p");
        p.innerText = 'SSID:' + ssid;
        p.style.color = 'red';
        p.style.fontSize = '16px';
        p.style.fontWeight = 'bold';

        var blink = createBookLink(ssid);
        var bookImg = document.getElementsByClassName('tubookimg')[0];
        if (bookImg && blink) { // 检查bookImg是否存在
            bookImg.appendChild(p);
            bookImg.appendChild(blink);
        } else {
            console.error('Element not found: .tubookimg');
        }
    }).catch(error => {
        console.error('Error fetching ssid:', error);
    });
}

(function () {
    /// entry
    try {
        main();
        detailMain();
    } catch (e) {
        console.error(e);
    }
})();