node fs (删除文件夹、创建文件夹、删除文件、创建文件）

const fs = require('fs')


//重置img文件夹
const toolsResetImgDir = async (req, res) => {
  const { dirPath = 'D:/temp/yuying/video/grade1/chinese1' } = req.body
  let imgDirPath = dirPath + '-img'
  const isExistImgDir = fs.existsSync(imgDirPath)
  if (isExistImgDir) {
    //删除文件夹
    fs.rmdirSync(imgDirPath, { recursive: true })
  }
  //创建文件夹
  fs.mkdirSync(imgDirPath)
  //创建文件
  fs.writeFileSync(imgDirPath + '/截图.png', '1')
  res.send({
    code: 200,
    data: {
      dirPath,
      isExistImgDir
    },
    message: '成功'
  })
}

//删除要更新的图片
const toolsDeleteImg = async (req, res) => {
  const { dirPath = 'D:/temp/yuying/', filename } =
    req.body
  const isExistImg = fs.existsSync(`${dirPath}${filename}`)
  if (isExistImg) {
    //删除文件
    fs.unlinkSync(`${dirPath}/${filename}`)
  }

  res.send({
    code: 200,
    data: {
      dirPath,
      filename
    },
    message: '成功'
  })
}