Restaurant search bot

Let us build a chatbot that can search for restaurants based on user goals and preferences. Let us begin by building Node.js modules to get data from Zomato based on user preferences. Create a file called zomato.js. Add a request module to the Node.js libraries using the following command in the console:

> npm install request --save

In zomato.js, add the following code to begin with:

var request = require('request');

var baseURL = 'https://developers.zomato.com/api/v2.1/';
var apiKey = 'YOUR_API_KEY';

var catergories = null;
var cuisines = null;

getCategories();
getCuisines(76);

Replace YOUR_API_KEY with your Zomato key. Let's build functions to get the list of categories and cuisines at startup. These queries need not be run when the user asks for a restaurant search because this information is pretty much static:

function getCuisines(cityId){

    var options = {
        uri: baseURL + 'cuisines',
        headers: {
            'user-key': apiKey
        },
  ...