@oawu/ddns/Watch.js

🌐 給予我的 IP 一個漂亮的名稱吧 DDNS

/**
 * @author      OA Wu <oawu.tw@gmail.com>
 * @copyright   Copyright (c) 2015 - 2022, @oawu/ddns
 * @license     http://opensource.org/licenses/MIT  MIT License
 * @link        https://www.ioa.tw/
 */

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

const Platform   = require('./lib/Platform.js')
const IP         = require('./lib/IP.js')

const { title, done, fail } = require('@oawu/cli-progress')
const { create: Queue }     = require('@oawu/queue')

const rootPath = Path.resolve(__dirname, ('..' + Path.sep).repeat(0)) + Path.sep

const pad0 = n => n < 10 ? `0${n}` : n

const now = _ => {
  const date = new Date(), y = date.getFullYear(), m = pad0(date.getMonth() + 1), d = pad0(date.getDate()), h = pad0(date.getHours()), i = pad0(date.getMinutes()), s = pad0(date.getSeconds())
  return [[y, m, d].join('-'), [h, i, s].join(':')].join(' ')
}

const doing = (platform, showLog, time) => Queue()

  .enqueue(next => next(showLog && process.stdout.write("\r\n" + ' 執行檢查：' + now() + "\r\n")))

  .enqueue(next => IP((error, { privateIP: private, publicIP: public } = {}) => error
    ? setTimeout(_ => doing(platform, showLog, time), time, showLog && process.stdout.write("\r" + error.message + "\n"))
    : next({private, public}), showLog))

  .enqueue((next, ip) => FileSystem.readFile(rootPath + platform.cache, 'utf8', (error, data) => error || data !== ip.public
    ? next(ip, platform.ip(ip), showLog && done('需要更新'))
    : setTimeout(_ => doing(platform, showLog, time), time, showLog && done('沒有，不需要動作')), showLog && title('讀取快取，確認是否有改變過')))

  .enqueue((next, ip) => platform.upload((error, data) => error
    ? setTimeout(_ => doing(platform, showLog, time), time, showLog && process.stdout.write("\r" + error.message + "\n"))
    : next(ip, platform), showLog))

  .enqueue((next, ip) => FileSystem.writeFile(rootPath + platform.cache, ip.public, 'utf8', error => error
    ? next(showLog && process.stdout.write("\r" + error.message + "\n"), showLog && fail('失敗'))
    : next(ip, showLog && done()), showLog && title('儲存快取')))

  .enqueue(next => next(setTimeout(_ => doing(platform, showLog, time), time)))

module.exports = (platform, time = 60 * 1000, showLog = true) => platform instanceof Platform && doing(platform, showLog, time)