update_server_list

update_server_list.js

/*
   Deps:

   - npm i lodash request request-promise-native fs-extra localeval

   Usage:

   - cd </path/to/poi/repo>
   - node update_server_list.js assets/data/server.json
   - server.json should now be updated, use "git diff" to verify differences if any.

 */

const _ = require('lodash')
const request = require('request-promise-native')
const localeval = require('localeval')
const { readJsonSync, writeJsonSync } = require('fs-extra')

const [_ignore1, _ignore2, serverJsonPath] = process.argv

if (!serverJsonPath) {
  console.error(`node <script> <server.json>`)
  process.exit(1)
}

const serverJson = readJsonSync(serverJsonPath)

request(
  'http://203.104.209.7/gadget/js/kcs_const.js'
).then(data => {
  let updated = false
  const sandbox = {}
  const raw = localeval(data, sandbox)
  const indexedServerJson = _.keyBy(_.toPairs(serverJson), x => x[1].num)
  _.entries(sandbox.ConstServerInfo).map(([serverKey, serverIpRaw]) => {
    const reResult = /^World_(\d+)$/.exec(serverKey)
    if (!reResult)
      return
    const [_ignore3, serverNumStr] = reResult
    const [_ignore4, serverIp] = /^http:\/\/((?:\d|\.)+)\/$/.exec(serverIpRaw)
    const oldServerIp = indexedServerJson[serverNumStr][0]
    if (oldServerIp !== serverIp) {
      indexedServerJson[serverNumStr][0] = serverIp
      updated = true
      console.log(`Server #${serverNumStr}: ${oldServerIp} => ${serverIp}`)
    }
  })

  if (updated) {
    const reconstructed =
      _.fromPairs(
        // sort then reconstruct, in hope that this ends up
        // enumerating properties in the expected order.
        _.toPairs(indexedServerJson).sort(
          (x,y) => Number(x[0]) - Number(y[0])
        ).map(x => x[1])
      )

    writeJsonSync(serverJsonPath, reconstructed, {spaces: '\t'})
    console.log(`Updated ${serverJsonPath}`)
  }
})