chat/build_cache.js

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

let dir = path.join(__dirname, 'dist')
let list = walk(dir)
if (process.env.URL === 'new') {
  global.URL_CDN = '//static.meechat.me/cdn/new.mee.chat/'
} else if (process.env.URL === 'form') {
  global.URL_CDN = '//static.meechat.me/cdn/mee.chat/'
} else {
  global.URL_CDN = '/'
}

// console.log(global.URL_CDN)
// console.log(dir)
// 获取文件
let baseDir = path.join(__dirname, '/')
list.forEach((value, index) => {
  // 对.html和.json特殊处理
  if (value.endsWith('.html') || value.endsWith('.json')) {
    value = value.replace(baseDir, '/')
    list[index] = value.replace('/dist/', '/')
  } else {
    value = value.replace(baseDir, '')
    list[index] = global.URL_CDN + value
  }
})

let fileName = dir + '/sw.js'
// 修改文件
fs.readFile(fileName, 'utf8', function (err, files) {
  if (!err) {
    let result = files.replace('let urlsToCache = []', 'let urlsToCache = ' + JSON.stringify(list) + '')
    fs.writeFile(fileName, result, 'utf8', function (err) {
      if (err) return console.log(err)
    })
  }
})

function walk (dir) {
  var children = []
  fs.readdirSync(dir).forEach(function (filename) {
    var path = dir + '/' + filename
    var stat = fs.statSync(path)
    if (stat && stat.isDirectory()) {
      children = children.concat(walk(path))
    } else {
      children.push(path)
    }
  })

  return children
}