JonathanZWhite

var fallbackMessages = [
  'Sorry, not sure what you just said.',
  'Uh oh! Try again.',
  'Hm... Sorry I\'m not that smart yet. Try again!'
];
var message = messages[Math.floor(Math.random() * messages.length)];

bot.say(message);

JonathanZWhite

let store = {
  ...

  getState: function(hash) {
    if (!this._users[hash]) return this._initializeUser(hash)

    return this._users[hash]
  },

  clearState: function(hash) {

JonathanZWhite

let store = {
  ...

  update: function(hash, data) {
    if (!this._users[hash]) this._initializeUserState(hash)

    console.log('🌑  => PREVIOUS STATE')
    console.log(this.getState(hash))

    this._users[hash] = _.merge(this._users[hash], data)

JonathanZWhite

class Messenger {
  ...

  handleText(msg) {
    const message = new Message(Message.mapMessage(msg))
    const text = message.text

    if (inputParser.isAskingForGenreList(text))
      return handlers.music.getGenreList(message, this.bot)

JonathanZWhite

let store = {
  _users: {},

  // creates state tree
  _initializeUserState: function(hash) {
    this._users[hash] = {
      command: '',
      spotify: {
        genre: '',
        numberOfRecs: 0

JonathanZWhite

(function(module) {
  
  function getRecommendation(selectedGenre, limit) {
    ...

    return Promise.resolve()
      .then(getSpotifyAccessToken)
      .then(getRecommendation)

    function getRecommendation() {

JonathanZWhite

class Music {
  ...

  getRecommendation(message, bot) {
    store.update(message.from, {
      command: commands.GET_RECOMMENDATION,
      spotify: {
        numberOfRecs: message.text
      }
    })

JonathanZWhite

class Music {
  getGenreList(message, bot) {
    // clears store for new command tree
    store.clearState(message.from)
    store.update(message.from, { command: commands.GET_GENRE_LIST })

    bot.sendMessage(message.from, 'Choose a genre you would like a recommendation for 🎵', {
      reply_markup: {
        keyboard: genresJSON.genres,
        one_time_keyboard: true

JonathanZWhite

class InputParser {
  isAskingForGenreList(text) {
    const pattern = /music|recommendation/i

    return text.match(pattern)
  }

  isAskingForNumberOfRec(text, prevCommand) {
    return prevCommand === commands.GET_GENRE_LIST
  }

JonathanZWhite

'use strict'

const Messenger = require('./lib/messenger')
const messenger = new Messenger()

messenger.listen()
  .then(() => {
    console.log('🤖  Listening to incoming messages')
  })