const mc = require('minecraft-protocol')
const { EventEmitter } = require('events')
const fs = require('fs')
const path = require('path')

const plugins = []
for (const filename of fs.readdirSync(path.resolve(__dirname, 'plugins'))) {
  if (!filename.endsWith('.js')) return
  plugins.push(require(path.resolve(__dirname, 'plugins', filename)))
}

function createBot (options = {}) {
  // defaults
  options.username ??= 'Bot'
  // options.password = options.password ?? null
  options.prefix ??= '!'
  options.brand ??= 'vanilla' // found that mineflayer has this so i added it here lol

  options.styles ??= {}
  options.styles.primary ??= { color: 'white' }
  options.styles.secondary ??= { color: 'green' }

  options.autoReconnect ??= false
  options.randomizeUsername ??= false

  options['online-mode'] ??= {}
  options['online-mode'].enabled ??= false
  options['online-mode'].username ??= null
  options['online-mode'].password ??= null

  options.paths.logs ??= 'logs'
  options.paths.music ??= 'music'
  options.paths.images ??= 'images'
  options.paths.persistent ??= 'persistent'

  // fard
  if (options.randomizeUsername) {
    options.username += '\u00a7' + String.fromCharCode(Math.floor(Math.random() * 65535))
  }
  if (options['online-mode'].enabled) {
    options.username = options['online-mode'].username
    options.password = options['online-mode'].password
  }

  // actually create the bot lol
  const bot = new EventEmitter()
  bot.plugins = plugins
  bot.loadPlugin = loadPlugin

  // properties
  bot.host = options.host
  bot.port = options.port

  bot.prefix = options.prefix
  bot.brand = options.brand
  bot.styles = options.styles
  bot.paths = options.paths
  bot.autoReconnect = options.autoReconnect
  bot.randomizeUsername = options.randomizeUsername
  bot['online-mode'] = options['online-mode']

  // set the client and add listeners
  bot.on('set_client', (client) => {
    client.on('connect', () => bot.emit('connect'))
    client.on('error', (err) => bot.emit('error', err))

    bot.end = (...r) => bot._client.end(...r)
    client.on('end', (reason) => {
      bot.loggedIn = false
      bot.emit('end', reason)
      // auto reconnect
      if (bot.autoReconnect) {
        setTimeout(() => {
          if (bot.randomizeUsername && !bot['online-mode'].enabled) { options.username = options.username.slice(0, -2) + '\u00a7' + String.fromCharCode(Math.floor(Math.random() * 65535)) }

          bot._client = mc.createClient(options)
          bot.emit('set_client', bot._client)
        }, 6000)
      }
    })

    // more fard listeners
    bot.loggedIn = false
    bot._client.on('login', () => {
      bot.loggedIn = true
      bot.username = bot._client.username
      bot.uuid = bot._client.uuid
      bot.emit('login')
    })

    // position code
    bot.position = { x: null, y: null, z: null } // to prevent errors i guess
    bot._client.on('position', (packet) => {
      bot.position = packet
      bot._client.write('teleport_confirm', { teleportId: packet.teleportId })
    })

    bot._client.on('packet', (data, meta) => {
      bot.emit('packet', data, meta);
      bot.emit('packet.' + meta.name, data);
    })
  })
  bot._client = options.client ?? mc.createClient(options)

  for (const plugin of plugins) plugin(bot, options) // Load plugins before emitting set_client so that plugins can listen for the event

  bot.emit('set_client', bot._client)

  function loadPlugin (plugin) {
    try {
      plugin(bot, options)
    } catch (e) {
      console.log(`Error loading ${plugin}:`)
      console.log(require('util').inspect(e))
    }
  }

  return bot
}

module.exports = createBot