const mineflayer = require('mineflayer')
const pathfinder = require('mineflayer-pathfinder').pathfinder
const {
  gameplay,
  MoveTo,
  BreakBlock,
  ObtainItems,
  ObtainItem,
  GiveTo,
  Craft
} = require('prismarine-gameplay')
// const { Gameplay } = require('prismarine-gameplay/lib/gameplay')
// const { Vec3 } = require('vec3')
let mcData = require('minecraft-data')

let cfg = {}
let bot = {}

// if (process.argv.length < 4 || process.argv.length > 6) {
//   console.log('Usage : node miner.js <host> <port> [<name>] [<password>]')
//   process.exit(1)
// }

// const bot = mineflayer.createBot({
//   host: process.argv[2],
//   port: parseInt(process.argv[3]),
//   username: process.argv[4] ? process.argv[4] : 'collect_items',
//   // password: process.argv[5]
// })


// bot.on('spawn', () => bot.gameplay.debugText = true)

// bot.on('chat', (username, message) => mine(username, message))

function checkBlockExists(name){
  if (mcData.blocksByName[name] === undefined) {
    bot.chat(`${name} is not a block name`)
    return false
  } else {
    return true
  }
}

function miner(username, message) {
  const player = bot.players[username] ? bot.players[username].entity : null

  const command = message.split(' ')
  switch (true) {
    // case /^echo .*/.test(message):
    //   bot.chat(command.slice(1).join(" "))
    //   break

    // case /^zz+/.test(message):
    //   bot.chat("/afk")
    //   break
    case /^debug$/.test(message):
      bot.gameplay.debugText = !!!bot.gameplay.debugText
      break

    case /^moveto -?[0-9]+ -?[0-9]+$/.test(message):
      bot.gameplay.solveFor(
        new MoveTo({
          x: parseInt(command[1]),
          z: parseInt(command[2])
        }), logError)
      break

    case /^moveto -?[0-9]+ -?[0-9]+ -?[0-9]+$/.test(message):
      bot.gameplay.solveFor(
        new MoveTo({
          x: parseInt(command[1]),
          y: parseInt(command[2]),
          z: parseInt(command[3])
        }), logError)
      break

    case /^moveto \w+$/.test(message):
      const player2 = bot.players[command[1]] ? bot.players[command[1]].entity : null
      if (!player2) {
        bot.chat(`can't see ${command[1]}..`)
      } else {
        bot.gameplay.solveFor(
          new MoveTo({
            x: player2.position.x,
            y: player2.position.y,
            z: player2.position.z
          })
        )
      }
      break

    case /^comehere$/.test(message):
      if (!player) {
        bot.chat("can't see you..")
      } else {
        bot.gameplay.solveFor(
          new MoveTo({
            x: player.position.x,
            y: player.position.y,
            z: player.position.z
          }), logError)
      }
      break

    case /^break -?[0-9]+ -?[0-9]+ -?[0-9]+$/.test(message):
      bot.gameplay.solveFor(
        new BreakBlock({
          position: new Vec3(
            parseInt(command[1]),
            parseInt(command[2]),
            parseInt(command[3])
          )
        }), logError)
      break

    case /^collect [0-9]+ [a-zA-Z_]+$/.test(message):
      if(!checkBlockExists(command[2])) {return false}
      bot.gameplay.solveFor(
        new ObtainItems({
          itemType: command[2],
          count: parseInt(command[1])
        }), logError)
      break

    case /^collect [a-zA-Z_]+$/.test(message):
      if(!checkBlockExists(command[2])) {return false}
      bot.gameplay.solveFor(
        new ObtainItem({
          itemType: command[1]
        }), logError)
      break

    case /^bringme [0-9]+ [a-zA-Z_]+$/.test(message):
      if(!checkBlockExists(command[2])) {return false}
      bot.gameplay.solveFor(
        new GiveTo({
          itemType: command[2],
          count: parseInt(command[1]),
          entity: player
        }), logError)
      break

    case /^craft [0-9]+ [a-zA-Z_]+$/.test(message):
      if(!checkBlockExists(command[2])) {return false}
      bot.gameplay.solveFor(
        new Craft({
          itemType: command[2],
          count: parseInt(command[1]),
          entity: player
        }), logError)
      break

    case /^stop$/.test(message):
      bot.chat("♪♪ can't stop me now!! ♪♪")
      // player = bot.player.entity
      if (player) {
        bot.gameplay.solveFor(
          new MoveTo({
            x: player.position.x,
            y: player.position.y,
            z: player.position.z
          }), logError)
      }
      break
  }
}

function logError(err) {
  if (err)
    bot.chat(`Failed task: ${err.message}`)
}


const load = (config) => {
  cfg = config
  bot = cfg.bot

  mcData = mcData(bot.version)
  bot.loadPlugin(pathfinder)
  bot.loadPlugin(gameplay)
  bot.on("chat", miner)
}

const unload = () => {
  // bot.gameplay
  bot.off("chat", miner)
}

module.exports = { load, unload }