index.js

const Promise = require('bluebird')
const _ = require('lodash')
const videos = require('./videos')
const subscription = require('./subscription')

const TEXT_CATEGORIES = {
  WORK: [
    "Hard work beats talent every time.",
    "The marketplace punishes those that don't work hard.",
    "You don't get paid for the time, you get paid for the value you bring."
  ],
  LIFE: [
    "This one is really worth a watch.",
    "You live only once, find the courage.",
    "Remember systems are better than goals!"
  ],
  GYM: [
    "You will find yourself working 20% harder just by listening to this on the trendmill",
    "Happy to be your workout mate... Watch this!",
    "If you are not pumped up after this video, I really don't know what to tell you"
  ]
}

const pickCategory = {
  quick_replies: [
    {
      content_type: 'text',
      title: '🔥 Work 🔥',
      payload: 'GET_VIDEO_WORK'
    },
    {
      content_type: 'text',
      title: '😌 Life Goals 🔥',
      payload: 'GET_VIDEO_LIFE'
    },
    {
      content_type: 'text',
      title: '💪 Gym 🔥',
      payload: 'GET_VIDEO_GYM'
    }
  ],
  typing: true
}

const WELCOME_SENTENCES = [
  "Hey, so I've heard that you a little bit of Dr Boost magic.  Don't worry I've got some videos that will give you back your energy and determination 👏",
  "By the way, I'm not human or artificially intelligent so let's just stick to using buttons, that's going to be easier for the both of us 🤖",
  "👉 Use the menus on messenger if you get stuck."
]

const WELCOME_TEXT_QUICK_REPLY = "Choose a video category right away and I'll make sure you get pumped up!"

const DEFAULT_ANSWERS = event => [
  event.user.first_name + ", choose something from the menu below but please don't say words to me :)",
  "Help, words are not my strong point " + event.user.first_name,
  "Motivational videos are all I understand unfortunately",
  "I like you.  You say words to me that sound nice even if I don't understand them :s",
  "I hope you see how easy it is to create a bot on botpress " + event.user.first_name + ", clearly I'm in need of some nlp functionality though!"
]

const shareTemplate = {
  template_type: 'generic',
  elements: [{
    title: 'Clicking this button could literally change your life',
    item_url: 'https://m.me/boostfuel',
    image_url: 'https://s27.postimg.org/dl8i0udqb/motivation_on_demand.png',
    buttons: [{
      type: 'web_url',
      title: '👏 Make it happen',
      url: 'https://m.me/boostfuel'
    }, { type: 'element_share' }]
  }]
}

const SHARE_TEXT = "PLEASE! If you enjoy the service I am giving you, consider sharing the card below with some of your friends 👇!"

const OPEN_SOURCE_TEXT = "This bot is open-source and released under the AGPL-3 license. Contributions are welcomed.\n⚡ This bot is powered by the Botpress Platform."

module.exports = function(bp) {
  bp.middlewares.load()
  subscription(bp)

  bp.hear({
    type: 'postback',
    text: 'GET_STARTED' 
  }, (event, next) => {
    const { first_name, last_name } = event.user
    bp.logger.info('New user:', first_name, last_name)

    bp.subscription.subscribe(event.user.id, 'daily')

    return Promise.mapSeries(WELCOME_SENTENCES, txt => {
      return bp.messenger.sendText(event.user.id, txt, { typing: true, waitDelivery: true })
      .then(Promise.delay(250))
    })
    .then(() => bp.messenger.sendText(event.user.id, WELCOME_TEXT_QUICK_REPLY, pickCategory))
  })

  bp.hear(/TRIGGER_DAILY/i, (event, next) => {
    bp.sendDailyVideo(event.user.id)
  })

  bp.hear({
    type: 'postback',
    text: 'OPEN_SOURCE'
  }, (event, next) => {
    return bp.messenger.sendTemplate(event.user.id, {
      template_type: 'button',
      text: OPEN_SOURCE_TEXT,
      buttons: [{ 
        type: 'web_url',
        title: 'View on GitHub',
        url: 'https://github.com/botpress/Boost'
      }]
    })
  })

  const hearGetVideo = category => {
    bp.hear({ text: 'GET_VIDEO_' + category }, (event, next) => {
      const text = _.sample(TEXT_CATEGORIES[category])
      bp.messenger.sendText(event.user.id, text, { waitDelivery: true })
      .then(() => bp.sendRandomVideo(event.user.id, category))
    })
  }

  // Create a listener for each categories
  _.keys(TEXT_CATEGORIES).forEach(hearGetVideo)

  bp.botDefaultResponse = event => {
    const text = _.sample(DEFAULT_ANSWERS(event))
    return bp.messenger.sendText(event.user.id, text, pickCategory)
  }

  bp.sendRandomVideo = (userId, category) => {
    return videos.getRandomVideo(category)
    .then(meta => {
      return bp.messenger.sendTemplate(userId, {
        template_type: 'generic',
        elements: [{
          title: meta.title,
          item_url: meta.url,
          image_url: meta.thumbnail,
          subtitle: meta.description,
          buttons: [
            {
              type: 'web_url',
              title: '🔥 Watch 🔥',
              url: meta.url,
              webview_height_ratio: 'full'
            },
            {
              type: 'postback',
              title: '👉 Next video',
              payload: 'GET_VIDEO_' + category
            },
            { type: 'element_share' }
          ]
        }]
      })
    })
    .then(() => {
      // 10% chance of saying this
      const n = _.random(0, 10)
      if (n === 5) {
        return Promise.delay(15000)
        .then(() => bp.sendShare(userId))
      }
    })
  }

  bp.sendShare = userId => {
    return bp.messenger.sendText(userId, SHARE_TEXT)
    .then(Promise.delay(1000))
    .then(() => bp.messenger.sendTemplate(userId, shareTemplate))
  }

  bp.sendDailyVideo = userId => {
    const category = _.sample(_.keys(TEXT_CATEGORIES))
    const text = "Here's your daily motivational video, have an excellent day 😁!"

    bp.messenger.sendText(userId, text)
    .then(Promise.delay(1000))
    .then(() => bp.sendRandomVideo(userId, category))
  }
}