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edwin / 复制 知乎(私人用）

// ==UserScript==
// @name         复制 知乎(私人用）
// @namespace    https://github.com/nameldk/user-script
// @version      0.2
// @description  复制dom节点，提交到博客 (私人用）
// @license      MIT
// @author       nameldk
// @author       edwin
// @match        https://www.zhihu.com/question/*
// @match        https://zhuanlan.zhihu.com/p/*
// @require      https://unpkg.com/turndown/dist/turndown.js
// @require      https://unpkg.com/jquery@3.3.1/dist/jquery.min.js
// @grant        none
// ==/UserScript==

(function () {
  'use strict';
  let turndownService = new TurndownService();
  turndownService.addRule('formula', {
    filter: function (node, options) {
      // console.log(node)
      return (
        options.linkStyle === 'inlined' &&
        node.nodeName === 'IMG' &&
        node.outerHTML.search("data-formula") != -1
      )
    },
    replacement: function (content, node) {
      return '$' + node.outerHTML.replace(/^.*?data-formula="(.*?) *?".*?$/, "$1") + '$'
    }
  })
  turndownService.addRule('figure', {
    filter: 'figure',
    replacement: function (content, node) {
      var description = "";
      if (node.innerHTML.search("<figcaption>") != -1) {
        description = node.innerHTML.replace(/^.*?<figcaption>(.*?)<\/figcaption>.*?$/, "$1")
      }
      return '![](' +
        node.innerHTML.replace(/^.*?src="(.*?)".*?$/, "$1") + ')  \n' +
        description
    }
  })
  let isAnswerPage = window.location.href.match(/www.zhihu.com\/question\/\d+\/answer\/\d+/);
  let isZhuanlan = window.location.href.match(/zhuanlan.zhihu.com\/p\/\d+/);

  function bind() {
    $('.List-item, .AnswerCard, .Post-content').each(function () {
      let $thisItem = $(this);
      let $btn = $('<button type="button" class="btn-html2md Button Button--blue" style=" position: absolute; right: 20px; top: 10px;">复制</button>');
      let $author = $thisItem.find(".AuthorInfo");
      if (isAnswerPage) {
        $btn.css({
          "position": "relative",
          "float": "right"
        });
      }
      if (isZhuanlan) {
        $btn[0].style.top = "60px";
      }
      $thisItem.prepend($btn);
      $btn.on("click", function () {
        let $rich = $thisItem.find(".RichContent-inner");
        if (!$rich.length) {
          $rich = $thisItem.find(".Post-RichTextContainer");
        }
        if ($rich.length) {
          let markdown = "";
          let title = $(".Post-Title");
          if (title.length) {
            markdown += "## " + title[0].innerText + "\n\n";
          }
          //markdown += turndownService.turndown($rich.get(0));
          $rich.remove(".RichText-Ecommerce");
          markdown += $rich.html()
          markdown = markdown.replace(/<img.+?>/g, "");
          markdown += "\n> 作者：" + $author.children('meta[itemprop="name"]').attr("content") || '';
          //markdown += '\n> 链接：' + $thisItem.find('meta[itemprop="url"][content*="/answer/"]').attr('content') || '';
          // console.log(markdown);
          if (copyToClipboard(markdown)) {
            let $t = $('<div style="position: absolute;width: 80px;padding-top: 2px;height: 24px;right: 40%;background: #68af02;color: #fff;text-align: center;border-radius: 5px;margin-left: 300px;">复制成功</div>');
            if (isAnswerPage) {
              $t.css({
                "margin-top": "10px",
                "right": "auto"
              });
            }
            if (isZhuanlan) {
              $t[0].style.right = "20px";
              $t[0].style.top = "100px";
            }
            $thisItem.prepend($t);
            window.open("https://zshipu.com/2md/");
            setTimeout(function () {
              $t.remove();
            }, 1500);
          }
          else {
            console.error("操作失败");
          }
        }
      });
    });

  }

  function copyToClipboard(text) {
    const input = document.createElement('textarea');
    input.style.position = 'fixed';
    input.style.opacity = 0;
    input.value = text;
    document.body.appendChild(input);
    input.select();
    let res = document.execCommand('Copy');
    document.body.removeChild(input);
    return res;
  }

  setTimeout(function () {
    bind();
  }, 1000);
})();