Braft Editor 富文本转钉钉机器人markdown格式

const controls = [
  'undo', 'redo', 'separator', 'separator',
  'text-color', 'bold', 'italic', 'headings', 'separator',
  'link', 'hr', 'separator', 'clear', 'separator', 'fullscreen'
]

let result = '<h1>我是标题</h1><p><br/>我是常规文本<br/>我是<strong>加粗的</strong><br/>我是<em>斜体</em><br/>我是<strong><em>加粗的斜体</em></strong><br/>我是<span style="color:#61a951">绿色的</span><br/>我是<span style="color:#c0392b">红色的</span><br/><strong><em><span style="color:#c0392b">我整行时红色加粗的斜体</span></em></strong><br/><em><span style="color:#c0392b">我整行是红色斜体</span></em><br/>我前面有两个空格<br/>我前面有三个空格<br/>我下面有一行空行<br/><br/>我上面有一行空行<br/>我下面有一根分割线<br/></p><hr/><p><a href="http://www.baidu.com/" target="">点击我进入百度搜索</a><br/><br/></p><hr/><p>我下面有一张图片<br/><br/></p><div class="media-wrap image-wrap"><img class="media-wrap image-wrap" src="https://lmg.jj20.com/up/allimg/tp10/22022312542M617-0-lp.jpg"/></div><p><br/><br/>我上面有一张图片</p><p><br/></p>'

const formatObj = {
  http: {
    from: /<a href="(?!http:\/\/|https:\/\/)([^"]+)"(.*?)>/g,
    to: '<a href="http://$1"$2>'
  }, // 替换超链接标签，增加http
  wrap: {
    from: /<p><\/p>/g,
    to: '<br>'
  }, // 替换换行标签
  h: {
    from: /<h[1-6][^>]*>(.*?)<\/h[1-6]>/g,
    to: match => {
      let result = ''
      result += match.replace(/<\/?[^>]+(>|$)/g, '').replace(/\n|\r/g, '')
      return result + ' \n---\n\n'
    }
  }, // 替换标题标签
  pStart: {
    from: /<p[^>]*>/g,
    to: '<p>'
  }, // 替换p标签开头可能存在的属性
  line: {
    from: /<hr\s*\/?>/g,
    to: '\n\n---\n'
  }, // 替换水平线
  strong: {
    from: /<strong>(.*?)<\/strong>/g,
    to: '**$1**'
  }, // 替换加粗标签
  em: {
    from: /<em>(.*?)<\/em>/g,
    to: '*$1*'
  }, // 替换斜体标签
  color: {
    from: /<span style="color:(#[0-9a-fA-F]{6})">(.*?)<\/span>/g,
    to: '<font color="$1">$2</font>'
  }, // 替换颜色标签
  a: {
    from: /<a\s+(?:[^>]*?\s+)?href="([^"]*)"(?:[^>]*)?>(.*?)<\/a>/g
  }, // 替换超链接标签
  img: {
    from: /<div[^>]*><img.*?src="([^"]*?)".*?\/><\/div>/g,
    to: '![]($1)'
  }, // 替换图片标签
  p: {
    from: /<p>(.*?)<\/p>/g,
    to: '$1\n\n'
  }, // 替换掉p标签 增加换行
  space: {
    from: /(?![^<>]*>|.*?<\/font>)(?!\n)\s/g,
    to: '&emsp;'
  } // 替换空格
}
for (const i in formatObj) {
  if (i !== 'a') {
    result = result.replace(formatObj[i].from, formatObj[i].to)
  } else {
    let match
    while ((match = formatObj[i].from.exec(result)) !== null) {
      const [fullMatch, href, content] = match
      result = result.replace(fullMatch, `[${content}](${href})`)
    }
  }
}

console.log('result: ', result) // '我是标题&emsp;\n---\n\n<br/>我是常规文本<br/>我是**加粗的**<br/>我是*斜体*<br/>我是***加粗的斜体***<br/>我是<font color="#61a951">绿色的</font><br/>我是<font color="#c0392b">红色的</font><br/>***<font color="#c0392b">我整行时红色加粗的斜体</font>***<br/>*<font color="#c0392b">我整行是红色斜体</font>*<br/>我前面有两个空格<br/>我前面有三个空格<br/>我下面有一行空行<br/><br/>我上面有一行空行<br/>我下面有一根分割线<br/>\n\n\n\n---\n[点击我进入百度搜索](http://www.baidu.com/)<br/><br/>\n\n\n\n---\n我下面有一张图片<br/><br/>\n\n![](https://lmg.jj20.com/up/allimg/tp10/22022312542M617-0-lp.jpg)<br/><br/>我上面有一张图片\n\n<br/>\n\n'