cwj-cli/lib/utils/index.js

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

// 解析传入的模板ejs文件，并生成字符串返回
const complie = (templateName, { name, wrapperName }) => {
  const templatePosition = `../template/${templateName}`
  const templatePath = path.resolve(__dirname, templatePosition)
  return new Promise((resolve, reject) => {
    ejs.renderFile(
      templatePath,
      { data: { name, wrapperName } },
      {},
      (err, result) => {
        if (err) {
          reject(err)
          return
        }
        resolve(result)
      }
    )
  })
}

// node生成文件
const writeToFile = (path, content) => fs.promises.writeFile(path, content)

// 递归创建文件目录
// path.dirname始终返回某个文件名的上一层目录地址
// fs.mkdirSync只能一层一层创建目录
const createDir = (dirPath) => {
  if (fs.existsSync(dirPath)) {
    return true
  }
  // 如果存在上层文件夹，则创建下一级文件夹
  if (createDir(path.dirname(dirPath))) {
    fs.mkdirSync(dirPath)
    return true
  }
}

// 判断并提示创建目标文件夹
const judgeNeedCreateDir = async (dest) => {
  const targetDir = path.resolve(dest)
  if (fs.existsSync(targetDir)) {
    return true
  }

  const answer = await inquirer.prompt([
    {
      type: 'confirm',
      name: 'createDir',
      message: `当前未存在该目标地址目录---${targetDir}---,是否自动创建`,
    },
  ])
  if (!answer.createDir) {
    return false
  }
  createDir(targetDir)
  return true
}

module.exports = {
  complie,
  writeToFile,
  createDir,
  judgeNeedCreateDir,
}