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

const prod = process.env.NODE_ENV === 'production'

class DelPlugin {
  apply(compiler) {
    compiler.hooks.done.tap('DelPlugin', () => {
      prod && deleteFolderRecursive(path.resolve(__dirname, '../../dist/static/offline'))
    })
  }
}

function deleteFolderRecursive(url) {
  let files = []

  if (fs.existsSync(url)) {
    files = fs.readdirSync(url)
    files.forEach(file => {
      const curPath = path.join(url, file)

      if (fs.statSync(curPath).isDirectory()) {
        deleteFolderRecursive(curPath)
      } else {
        fs.unlinkSync(curPath)
      }
    })

    fs.rmdirSync(url)
  } else {
    console.log('给定的路径不存在，请给出正确的路径')
  }
}

module.exports = DelPlugin