# Hubot dependencies
{Robot, Adapter, TextMessage, EnterMessage, LeaveMessage, Response} = require (process.env.HUBOT_HALL_REQUIRE_PATH || 'hubot')

# Hall dependencies
hall =      require 'hall-client'
_ =         require 'underscore'
debug =     require('debug')('hubot:hall')
pjson =     require('../package.json')

class Hall extends Adapter

  send: (params, strings...) ->
    user = @userFromParams(params)
    @bot.sendMessage user.room_id, user.room_type, str for str in strings

  reply: (params, strings...) ->
    user = @userFromParams(params)
    strings.forEach (str) =>
      @send params, "@#{user.name}: #{str}"

  userFromParams: (params) ->
    # hubot < 2.4.2: params = user
    # hubot >= 2.4.2: params = {user: user, ...}
    if params.user then params.user else params

  connect: ->

    debug "hubot-hall is trying to connect to the streaming api.............."

    @io = @bot.io

    onRoomItemNew = (data) =>
      data = JSON.parse(data)
      unless !data
        author =
          id: data.agent._id
          name: data.agent.display_name
          room_id: data.room_id
          room_type: (!data.participants) && 'group' || null
        return if @bot.session.get('_id') == author.id || !data.message || !data.message.plain
        regex_bot_name = new RegExp("^@?#{@robot.name}(,|\\b)", "i")
        regex_user_name = new RegExp("^@?#{@bot.session.get 'display_name'}(,|\\b)", "i")
        message = data.message.plain
        if message.match(regex_bot_name)
          message = message.replace(regex_bot_name, "#{@robot.name}:")
        else if message.match(regex_user_name)
          message = message.replace(regex_user_name, "#{@robot.name}:")
        @receive new TextMessage(author, message)

    @io.on 'ROOM_ITEM_NEW', onRoomItemNew

  run: ->

    cfg =
      email:    process.env.HUBOT_HALL_EMAIL
      password: process.env.HUBOT_HALL_PASSWORD
      ua:
        meta:   'Hall-Hubot-Adapter/'+pjson.version

    unless cfg.email and cfg.password
      console.error "ERROR: No credentials in environment variables HUBOT_HALL_EMAIL and HUBOT_HALL_PASSWORD"
      @emit "error", "No credentials"

    @bot = new hall(cfg)

    @connect()

    @emit 'connected'

exports.use = (robot) ->
  new Hall robot