// ==UserScript==
// @name         道客巴巴PDF下载
// @namespace    https://docs.scriptcat.org/
// @version      0.1.0
// @require      https://cdn.bootcss.com/jquery/3.5.1/jquery.min.js
// @require      https://cdn.jsdelivr.net/npm/html2canvas@1.4.1/dist/html2canvas.min.js
// @require      https://cdn.jsdelivr.net/npm/jspdf@2.5.1/dist/jspdf.umd.min.js
// @description  道客巴巴文档下载 道客巴巴PDF下载 PDF下载道客巴巴
// @author       行者无忌
// @match        *://www.doc88.com/p-*
// @noframes
// @license MIT
// ==/UserScript==

(function() {
    'use strict';
     const css = css => {
            const myStyle = document.createElement('style');
            myStyle.textContent = css;
            const doc = document.head || document.documentElement;
            doc.appendChild(myStyle);
        }
    css(`#xiazai {
    cursor:pointer; 
    position:fixed; 
    top:200px; 
    left:0px; 
    z-index:2147483647; 
    width: 80px;
    height: 80px;
    border-radius: 100px;
    box-shadow: 6px 7px 20px 3px #eaeaea;
    text-align: center;
    margin: auto;
    line-height: 80px;
    font-size: 14px;
    color: white;
    background: linear-gradient(-134deg, red, blue);
    }`);
    const html = $(`<div id='xiazai'>下载</div>`);
    $("body").append(html);
    //道客巴巴非打印区域的所有元素
    const doc_ele = ['#continueButton', '#continue_page','#header', '#toolbar', '#box1', '#boxright', '#readEndDiv', '.commonbox1',
            '#commentDiv', '.clearfix', '#footer', '.dk-bg', '.toplayer-shop', '.activelist','#zuihuitao','#xiazai'
    ]
    //点击下载
    $("#xiazai").bind("click", () => {
        let retime = setInterval(function () {
            const totalH = Math.max(document.body.scrollHeight, document.documentElement.scrollHeight);
            const nowY = $(window).scrollTop();
            const viewH = $(window).height();
            // 已经滚到底就停止
            if (nowY + viewH >= totalH) {
                clearInterval(retime);
                if (confirm('所有界面加载完成，是否打印？')) {
                    main();
                }
                return;
            }
            // 每次向下滚动500px
            $('html, body').animate({ scrollTop: nowY + 500 }, 150);
        }, 500);
         retime()
    });

    const main = () => {
        //清除影响pdf打印的元素
        $.each(doc_ele, (_, sel) => $(sel).remove());
        // 打印前强制页面置顶，根除滚动偏移导致首页空白
        window.scrollTo(0, 0);
        document.documentElement.scrollTop = 0;
        document.body.scrollTop = 0;

        let printStyle = document.createElement('style');
        printStyle.media = 'print';
         printStyle.textContent = `
            @media print {
                /* 极小边距，最大化纸张可用宽度 */
                @page {
                    size: A3;
                    margin: 1mm;
                    marks: none;
                    print-color-adjust: exact;
                }
                /* 全局清除边框、内外边距，消除左右竖线 */
                * {
                    border: none !important;
                    border-left: 0 !important;
                    border-right: 0 !important;
                    outline: none !important;
                    box-shadow: none !important;
                    margin: 0 !important;
                    padding: 0 !important;
                    -webkit-font-smoothing: antialiased !important;
                    -moz-osx-font-smoothing: grayscale !important;
                }
                html, body {
                    width: 100% !important;
                    max-width: 100% !important;
                    margin: 0 !important;
                    padding: 0 !important;
                    box-sizing: border-box !important;
                    transform: translateY(0) !important;
                    position: static !important;
                }
                /* 核心：强制所有外层容器100%宽度铺满，禁止固定宽度居中收缩 */
                body > div, main, .content, .page-box, .article-wrap, div[class*="box"] {
                    width: 100% !important;
                    max-width: 100% !important;
                    margin: 0 auto !important;
                    margin-left: 0 !important;
                    margin-right: 0 !important;
                    padding-left: 1mm !important;
                    padding-right: 1mm !important;
                    box-sizing: border-box !important;
                    page-break-before: avoid !important;
                }
                p, div, span, img {
                    max-width: 100% !important;
                    width: auto !important;
                    box-sizing: border-box !important;
                }
                /* Canvas高清防模糊 */
                canvas {
                    max-width: 100% !important;
                    image-rendering: crisp-edges !important;
                    image-rendering: -webkit-optimize-contrast !important;
                    -webkit-print-color-adjust: exact !important;
                    print-color-adjust: exact !important;
                }
                canvas, section, table {
                    page-break-inside: avoid !important;
                }
                body {
                    page-break-after: avoid !important;
                }
            }
        `;
        document.head.appendChild(printStyle);
        window.print();
    }
    // Your code here...
})();