Diner Bot for slack

slack.js

var request = require('request');

module.exports = function (context, cb) {
  
  var demand = context.body.text.replace(context.secrets.TRIGGER, '');
	
	var request_url = 'https://api.flickr.com/services/rest/';
	var final_url = 	request_url
						+ '?method=flickr.photos.search'
						+ '&api_key=' + context.secrets.API_KEY 
						+ '&tags=' + demand
						+ '&per_page=10&page=1'
						+ '&format=json'
						+ '&nojsoncallback=1';
						
	request.get(final_url, function (err, res, body) {
	  if (err) {
	    console.log(err);
	  } else {
	    var random = Math.round(Math.random())
	    var result = JSON.parse(body);
	    var photoId = result.photos.photo[random].id;
	    
	    var url_photo = request_url + '?method=flickr.photos.getSizes'
	                    + '&api_key=' + context.secrets.API_KEY
	                    + '&photo_id=' + photoId
	                    + '&format=json'
						          + '&nojsoncallback=1';
			request.get(url_photo, function(err, res, body){
			  if (err) {
	        console.log(err);
	      } else {
	        var result = JSON.parse(body);
	        var picture_URL = result.sizes.size[4].source;
	        
	        cb(null, { text : picture_URL });
	      }
			})
	  }
	})
}