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

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.plugins ??= {}
  fs.readdirSync(
    'plugins'
  ).forEach((file) => { // populate plugins array
    if (file.endsWith('.js') && options.plugins[file] == null) {
      options.plugins[file] = require(path.resolve('plugins', file))
    }
  })
  const plugins = []
  Object.keys(options.plugins).forEach((key) => {
    const plugin = options.plugins[key]
    if (plugin) plugins.push(plugin)
  })

  options.colors ??= {}
  options.colors.primary ??= 'white'
  options.colors.secondary ??= '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

  // 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

  // add fards
  bot.host = options.host
  bot.port = options.port
  /* bot._client.on('set_protocol', (packet) => {
    bot.host = packet.serverHost
    bot.port = packet.serverPort
  }) */
  // bot.username = () => bot._client.username
  // bot.uuid = () => bot._client.uuid
  bot.prefix = options.prefix
  bot.brand = options.brand
  bot.colors = options.colors
  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.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 })
    })

    // plugin injection
    bot.plugins.forEach((plugin) => {
      if (typeof plugin.client === 'function') plugin.client(bot, bot._client)
    })
  })
  bot._client = options.client ?? mc.createClient(options)
  bot.emit('set_client', bot._client)

  bot.plugins.forEach((plugin) => {
    if (typeof plugin.bot === 'function') plugin.bot(bot)
  })

  function loadPlugin (plugin) {
    try {
      if (typeof plugin.bot === 'function') plugin.bot(bot)
      if (typeof plugin.client === 'function') plugin.client(bot, bot._client)
      bot.plugins.push(plugin)
    } catch (e) {
      console.log(`Error loading ${plugin}:`)
      console.log(require('util').inspect(e))
    }
  }

  return bot
}

module.exports = createBot