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const fs = require('fs') const path = require('path')

// 匹配 .md 文件 const patternFilemd = /.md$/;

const currentDir = path.resolve('./')

const sidebarMdFile = path.resolve('./', '_sidebar.md')

function clearSidebarMdFile() { if (fs.existsSync(sidebarMdFile)) { fs.writeFileSync(sidebarMdFile, '', (err) => { if (err) { console.error(err); return } })

console.log('sidebarMd 文件已清空')
return

}

fs.writeFileSync(sidebarMdFile) console.log('sidebarMd 文件已近创建') }

function renderToDocsify(article) { // 如果前文件的前十行找到 migration_to_hexo 则将该文件迁移都到 hexo/source/_posts 下面去 const topTenLine = fs.readFileSync(article).toString().split(/\n/).splice(0, 15) return !topTenLine.find(line => line.includes('render_to_docsify')) }

const excludeItems = [ '习作计划', '其它', '收藏', '读书笔记', '生活', '网络资源', 'node_modules', '_sidebar', 'sidebar', '.idea', 'test_data', '.git', '.vscode', 'static', 'docs', 'migration_hexo' ]

function checkIsExcludeDir(dirPath) { return excludeItems.find(item => dirPath.includes(item)) }

const whiteSpace = ' '

function travel(dir, depth, callback) { fs.readdirSync(dir).map(file => { let filePath = path.join(dir, file)

if (checkIsExcludeDir(filePath)) return

if (fs.statSync(filePath).isDirectory()) {
  if (!fs.readdirSync(filePath).length) return

  const dirTitle = depth > 0 ? `${whiteSpace.repeat(depth)}- **${file}**\n` : `- **${file}**\n`
  fs.appendFileSync(sidebarMdFile, dirTitle, (err) => {
    if (err) {
      console.error(err)
    }
  })

  travel(filePath, depth + 1, callback)
} else if (patternFilemd.test(filePath) && renderToDocsify(filePath)) {
  // 判断是否为 .md 文件, 并且是否需要将当前文件渲染出来
  const fileName = filePath.split('/')[filePath.split('/').length - 1].replace('.md', '')
  const fileRelativePath = filePath.split(currentDir)[1].replace('.md', '')
  const fileWhiteSpace = `${whiteSpace.repeat(depth)}`
  const fileTitlePath = `- [${fileName}](${fileRelativePath})\n`
  const fileTitle = depth > 0 ? `${fileWhiteSpace}${fileTitlePath}` : fileTitlePath

  fs.appendFileSync(sidebarMdFile, `${fileTitle}`, (err) => {
    if (err) {
      console.error(err)
      return
    }
  })
}

}) }

(function start() { clearSidebarMdFile() travel(currentDir, depth = 0, function (filePath) {}) })()