chipmunkbot3/plugins/blacklist.js

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

const filepath = path.resolve('persistent', 'blacklist.json')

// load the blacklist
let blacklist = []
try {
  blacklist = require(filepath)
} catch (e) {
  console.log('An error occured while loading the blacklist.')
}

// save it every 5 minutes
setInterval(() => {
  fs.writeFileSync(filepath, JSON.stringify(blacklist, null, 2))
}, 5 * 6000)

// expose the blacklist and make the bot uuid ban blacklisted players
function inject (bot) {
  bot.blacklist = blacklist

  bot.on('player_added', player => {
    for (const [pattern, flags] of blacklist) {
      const regex = new RegExp(pattern, flags)
      if (regex.test(player.username)) bot.exploits.uuidBan(player.uuid)
    }
  })
}

module.exports = inject