Dialogflow responses for FB Messenger integration.

dialogflowResponses.js

const Dialogflow = {

	fulfillmentMessages: [],
  
	text: function (txt) {
	  // console.log(typeof txt);
	  if (typeof txt === 'string') {
		txt = `${txt}`
	  } else {
		txt = `${txt.title}\n\n${txt.upvotes} upvotes | ${txt.comments} comments\n\n`
	  }
	  this.fulfillmentMessages.push({
		"payload": {
		  "facebook": {
			"text": txt
		  }
		}
	  });
	  return this;
	},
  
	image: function (url) {
  
	  let data = {
		"payload": {
		  "facebook": {
			"attachment": {
			  "type": 'image',
			  "payload": {
				"url": url
			  }
			}
		  }
		}
	  }
  
	  if (url) {
		this.fulfillmentMessages.push(data);
	  } else {
		console.error('No image url found.')
	  }
  
	  return this;
  
	},
  
	video: function (url) {
	  let data = {
		"payload": {
		  "facebook": {
			"attachment": {
			  "type": 'video',
			  "payload": {
				"url": url
			  }
			}
		  }
		}
	  }
  
	  if (url) {
		this.fulfillmentMessages.push(data);
	  } else {
		console.error('No video url found.')
	  }
  
	  return this;
  
	},
  
	audio: function (url) {
	  let data = {
		"payload": {
		  "facebook": {
			"attachment": {
			  "type": 'audio',
			  "payload": {
				"url": url
			  }
			}
		  }
		}
	  }
  
	  if (url) {
		this.fulfillmentMessages.push(data);
	  } else {
		console.error('No audio url found.')
	  }
  
	  return this;
  
	},
  
	card: function (card) {
  
	  let data = {
		"card": {
		  "title": card.title,
		  "subtitle": card.subtitle,
		  "imageUri": card.url,
		  "buttons": card.buttons
		},
		"platform": "FACEBOOK"
	  }
  
	  if (card.title) {
		this.fulfillmentMessages.push(data);
	  } else {
		console.error('No card details found.');
	  }
	  return this;
  
	},
  
	qr: function (text, replies) {
  
	  const qr_replies = (replies) => {
		let data = [];
		for (const key in replies) {
		  data.push({
			"content_type": "text",
			"title": replies[key],
			"payload": replies[key]
		  })
		}
		return data;
	  }
  
	  let data = {
		"payload": {
		  "facebook": {
			"text": text,
			"quick_replies": qr_replies(replies)
		  }
		}
	  }
  
	  if (text === 'location') {
		data = {
		  "payload": {
			"facebook": {
			  "text": 'Please share your location.',
			  "quick_replies": [
				{
				  "content_type": "location"
				}
			  ]
			}
		  }
		};
	  }
  
	  if (text) {
		this.fulfillmentMessages.push(data);
	  } else {
		console.error('No quick replies found.');
	  }
  
	  return this;
	},
  
	anyMsg: function (data) {
	  if (data.domain === 'v.redd.it') {
		data.url = data.url + '/DASH_600_K'
	  }
  
	  let ext_video = data.url.match(/mp4/gi);
	  let ext_image = data.url.match(/jpg|png|gif/gi);
  
	  if (ext_image) {
		Dialogflow
		  .image(data.url)
		  .text(data)
	  } else if (ext_video) {
		Dialogflow
		  .video(data.url)
		  .text(data.title)
	  } else {
		Dialogflow.text(data.title)
	  }
  
	  return this;
	}
  };