const irc = require('matrix-org-irc')
const ircStringify = require('../util/chat/stringify/irc')
const CommandSource = require('../util/command/command_source')

function inject (bot, options) {
  if (!options.irc?.enabled) return

  bot.irc = {
    client: options.irc.client,
    channel: options.irc.channel,
    commandPrefix: options.irc.commandPrefix,
    receivedMotd: false
  }

  if (!bot.irc.client) {
    bot.irc.client = new irc.Client(options.irc.server, options.irc.nick, options.irc)
  }

  const ircPrefix = {
    text: 'ChipmunkBot IRC',
    hoverEvent: {
      action: 'show_text',
      value: [
        'Server: ',
        String(bot.irc.client.server),
        '\nChannel: ',
        String(bot.irc.channel)
      ]
    }
  }

  bot.on('chat_irc', (string, msg) => {
    if (!bot.irc.receivedMotd || !bot.chat.shouldLog(msg)) return
    bot.irc.client.say(bot.irc.channel, string)
  })

  bot.irc.client.on('motd', () => {
    bot.irc.receivedMotd = true
    bot.irc.client.once('end', () => { bot.irc.receivedMotd = false })
  })

  bot.irc.client.on('message' + bot.irc.channel, (sender, msg, command) => {
    const senderText = {
      text: sender,
      insertion: command.prefix,
      hoverEvent: {
        action: 'show_text',
        value: command.prefix
      }
    }

    if (msg.startsWith(bot.irc.commandPrefix)) {
      function sendFeedback (text, broadcast) {
        const string = ircStringify(text, { lang: bot.registry?.language })
        bot.irc.client.say(bot.irc.channel, sender + ': ' + string)
      }

      const source = new CommandSource({ bot, permissionLevel: 0, sendFeedback, displayName: senderText })
      bot.commands.execute(msg.substring(bot.irc.commandPrefix.length), source)

      return
    }

    bot.fancyMsg(ircPrefix, senderText, msg)
  })

  bot.irc.client.on('error', error => bot.console.error('IRC Error:\n' + error.stack || error))
}

module.exports = inject