helpers.js

const fetch = require('node-fetch')
const stringify = require('json-stringify')
const slackBaseUrl = process.env.NODE_ENV === 'production'
  ? 'https://slack.com/api/'
  : 'http://2d11cc07.ngrok.io/'

const makeChannelSender = channel => message => {
  const headers = {
    'Content-Type': 'application/json',
    'Authorization': 'Bearer ' + process.env.OAUTH_TOKEN
  }

  fetch(slackBaseUrl + 'chat.postMessage', {
    method: 'POST',
    headers: headers,
    body: stringify({
      channel: channel,
      text: message
    })
  }).then(response => response.json())
    .then(json => { console.log(json) })
    .catch(ex => {
      console.log('Err: ' + ex)
    })
}

const getUserList = function () {
  const headers = {
    'Content-Type': 'application/json',
    'Authorization': 'Bearer ' + process.env.OAUTH_TOKEN
  }

  return fetch(slackBaseUrl + 'users.list', {
    method: 'GET',
    headers: headers
  }).then(response => response.json())
    .then(json => {
      return json
    })
}

const makeDMSender = (values, player) => {
  const data = values[1]['members']
  const message = values[0]
  console.log('Sending message to ' + player)
  const userId = getIdByName(data, player)
  console.log('User: ' + player + ' Id: ' + userId)

  const headers = {
    'Content-Type': 'application/json',
    'Authorization': 'Bearer ' + process.env.OAUTH_TOKEN
  }

  fetch(slackBaseUrl + 'chat.postMessage', {
    method: 'POST',
    headers: headers,
    body: stringify({
      channel: userId,
      text: message,
      as_user: false
    })
  }).then(response => response.json())
    .then(json => { console.log(json) })
    .catch(ex => {
      console.log('Err: ' + ex)
    })
}

const getIdByName = (memberList, name) => {
  const result = memberList.filter(member => {
    if (member.name === 'SeriousMTGBot') {
      console.log(member)
    }
    return member['name'] === name
  })

  if (result) {
    console.log('Found user')
  } else {
    console.log('User not found')
  }

  return result ? result[0].id : null
}

const helpers = {
  makeChannelSender: makeChannelSender,
  makeDMSender: makeDMSender,
  getUserList: getUserList,
  // TODO: Handle !define <trample etc.>, likely before the card pattern
  lookupRule: function (text, channel) {
    makeChannelSender(channel)('Rules lookup not implemented yet, sorry friends')
  }
}

module.exports = helpers