// ==UserScript==
// @name         Wenshu Print Fix v3@极客律师
// @namespace    geeklaw.wenshu.print
// @version      0.5
// @description  最高法文书网打印优化：只打印正文，去掉上面的巨大空白和目录/概要，并提供导出 PDF 按钮
// @match        https://wenshu.court.gov.cn/website/wenshu/*/index.html*
// @run-at       document-end
// @grant        none
// ==/UserScript==

(function () {
  'use strict';

  // 打印样式
  function injectPrintStyle() {
    if (document.getElementById('wenshu-print-fix-style')) return;

    const style = document.createElement('style');
    style.id = 'wenshu-print-fix-style';

    style.textContent = `
@media print {

  /* 把页面当成一张白纸 */
  html, body {
    margin: 0;
    padding: 0;
    background: #ffffff !important;
  }

  /* 只保留 .main */
  body > *:not(.main) {
    display: none !important;
  }

  .main {
    margin: 0 !important;
    padding: 0 !important;
    background: #ffffff !important;
  }
  .main > * {
    display: none !important;
  }
  .main > .detailBg {
    display: block !important;
    margin: 0 auto !important;
    padding-top: 0 !important;
  }

  /* 只保留第二个 item_table（正文） */
  .detailBg .detailBox > .item_table {
    display: none !important;
  }
  .detailBg .detailBox > .item_table:nth-of-type(2) {
    display: block !important;
  }

  /* 去掉目录按钮等装饰 */
  .detailBg .del_left,
  .detailBg .mulu_box,
  .detailBg .mulu_top,
  .detailBg .mulu_center {
    display: none !important;
  }

  /* 去掉两侧黄边 */
  .detailBg,
  .detailBg .detailBox,
  .detailBg .detailBox > .item_table,
  .detailBg .detailBox > .item_table:nth-of-type(2) {
    background: #ffffff !important;
    box-shadow: none !important;
    border: none !important;
  }

  /* 关键：正文容器不要固定宽度，改成自适应居中 */
  .detailBg .detailBox .del_center {
    width: auto !important;
    max-width: 190mm !important;   /* 小于 A4 的可打印宽度 */
    margin: 0 auto !important;
    overflow: visible !important;
  }

  /* 防止内部再写死宽度 */
  .detailBg .detailBox .del_center .PDF_box {
    width: auto !important;
  }
}
`;

    document.head.appendChild(style);
  }

  // 右下角「导出 PDF」按钮
  function createExportButton() {
    if (document.getElementById('wenshu-export-pdf-btn')) return;

    const detail = document.querySelector('.detailBg');
    if (!detail) return; // 不是文书全文页就不加

    const btn = document.createElement('button');
    btn.id = 'wenshu-export-pdf-btn';
    btn.textContent = '导出 PDF';
    btn.style.position = 'fixed';
    btn.style.right = '16px';
    btn.style.bottom = '16px';
    btn.style.zIndex = '99999';
    btn.style.padding = '6px 12px';
    btn.style.borderRadius = '4px';
    btn.style.border = '1px solid #888';
    btn.style.background = '#ffffff';
    btn.style.cursor = 'pointer';
    btn.style.fontSize = '12px';
    btn.style.boxShadow = '0 1px 4px rgba(0,0,0,.15)';

    btn.addEventListener('click', () => {
      // 调用浏览器打印，目标选“另存为 PDF”
      window.print();
    });

    document.body.appendChild(btn);
  }

  function init() {
    injectPrintStyle();
    createExportButton();
  }

  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', init);
  } else {
    init();
  }
})();