const radio = require('radio-stream')
const irc = require('irc-upd')
const Db = require('./libs/Db')
const models = require('./models').models
const Help = require('./libs/Help')
const allowedCommands = ['!artist', '!song', '!stats', '!when', '!help', '!notifications']

const db = new Db(models)

const bot = new irc.Client(process.env.IRC_SERVER, process.env.IRC_NICKNAME, {
  userName: process.env.IRC_USER_NAME,
  realName: process.env.IRC_REAL_NAME,
  password: process.env.IRC_PASSWORD,
  channels: [process.env.IRC_CHANNEL]
})
const stream = radio.createReadStream(process.env.STREAM_URL)

// Error events
bot.addListener('error', function (message) {
  console.error('ERR:', message)
})

const botSay = (where, what) => {
  bot.say(where, what)
}

const actions = (where, message) => {
  const exploded = message.split(' ')

  // Le message publié est pour le bot
  if (exploded[0].indexOf(process.env.IRC_NICKNAME) === 0) {
    // Le message contient une commande
    if (allowedCommands.indexOf(exploded[1]) !== -1) {
      switch (exploded[1]) {
        case '!artist':
        case '!song':
          break
        case '!help':
          Help.show(botSay, where, exploded)
          break
        default:
          break
      }
    }
  }
}

// Listener for public message
bot.addListener(`message${process.env.IRC_CHANNEL}`, function (from, to, message) {
  actions(process.env.IRC_CHANNEL, message.args.splice(1).join(' '))
})
// Listener for private message
bot.addListener('pm', function (from, to, message) {
  actions(from, message.args.join(' '))
})

stream.on('connect', function () {
  console.info('Radio Stream connected!')
  console.info(stream.headers)
})

// Listener on new song
stream.on('metadata', function (data) {
  let song = data.replace(/[^A-Za-z 0-9 .,?""!@#$%^&*()-_=+;:<>/\\|}{[\]`~]*/g, '')
  song = song.substring(12, song.length - 1)

  // Just for debug
  console.info(`Now playing: ${song}`)

  // Publish song on IRC channel
  bot.say(process.env.IRC_CHANNEL, `${process.env.RADIO_ALIAS} - ${song}`)

  // Extract artist = title from song
  const splitted = song.split(' - ')
  const artist = splitted[0]
  const title = splitted[1]

  // Save song for history
  db.saveSong({
    radio: process.env.RADIO_ALIAS,
    artist: artist,
    title: title
  })
})