'use strict'

module.exports = SlackRtmDataStore

// slackRtmClient should be of type RtmClient from @slack/client
function SlackRtmDataStore(slackRtmClient) {
  this.rtmClient = slackRtmClient
}

SlackRtmDataStore.prototype.teamId = function() {
  return this.rtmClient.activeTeamId
}

SlackRtmDataStore.prototype.channelById = function(channelId) {
  // Public channels are in the channels list, while private
  // channels are in the groups list.
  if (channelId[0] === 'C') {
    return Promise.resolve(this.rtmClient.dataStore.getChannelById(channelId))
  } else {
    return Promise.resolve(this.rtmClient.dataStore.getGroupById(channelId))
  }
}

SlackRtmDataStore.prototype.teamInfo = function() {
  return Promise.resolve(this.rtmClient.dataStore.teams[this.teamId()])
}