yammer.coffee

# Description:
#   Yammer messege.
#
YAMMER_USER_ID = process.env.YAMMER_USER_ID || 0
YAMMER_API_TOKEN = process.env.YAMMER_API_TOKEN || ""
ROOM_NAME = process.env.ROOM_NAME || "general"
KEY = 'yammer-latest-message-id'

Yammer = new require('yammer').Yammer
CronJob = require('cron').CronJob
_ = require('underscore')

class Postman
  constructor: (@message, @references) ->

  id: ->
    @message.id

  sender_id: ->
    @message.sender_id

  sender_name: ->
    users = @references.filter (row) =>
      if row.type == "user" && row.id == @sender_id()
        true
      else
        false
    users[0].full_name

  body: ->
    @message.body.plain

  url: ->
    @message.web_url

  created_at: ->
    date = new Date(@message.created_at)
    date.toLocaleString()

  sendable: ->
    @sender_id() != Number(YAMMER_USER_ID)

  message: ->
    """
      *#{@sender_name()}* (#{@created_at()})
      ```
      #{@body()}
      ```
      #{@url()}

    """

module.exports = (robot) ->
  new CronJob('* */1 * * * *', () ->
    message_id = robot.brain.get(KEY) || 609385388
    yammer = new Yammer access_token: YAMMER_API_TOKEN
    yammer.messagesReceived {qs: {newer_than: message_id, limit: 10}}, (res, json) ->
      _.each json.messages, (message) ->
        postman = new Postman(message, json.references)
        if postman.sendable()
          robot.send {room: ROOM_NAME}, postman.message()
          robot.brain.set(KEY, postman.id())
          console.log postman.id()
  ).start()