app.js

var restify = require('restify');
var builder = require('botbuilder');

//Creates global variables
var ShowType = "";
var Genre = "";
var Language = "";

//Define characteristics that match with shows 
var characteristics=[]
characteristics[0] =  "series" + "thriller" + "english";
characteristics[1] =  "movie" + "comedy" + "german";
characteristics[2] =  "movie" + "drama" + "spanish";

//Define the shows that match with the characteristics
var shows= []
shows[0] =  "True Detective";
shows[1] =  "Feuchtgebiete";
shows[2] =  "El laberinto del fauno";

// Setup Restify Server
var server = restify.createServer();
server.listen(process.env.port || process.env.PORT || 3978, function () {
	console.log('%s listening to %s', server.name, server.url);
});

// Create chat connector for communicating with the Bot Framework Service
var connector = new builder.ChatConnector({
	appId: process.env.MICROSOFT_APP_ID,
	appPassword: process.env.MICROSOFT_APP_PASSWORD
});

// Listen for messages from users
server.post('/api/messages', connector.listen());

// Service dialog
var bot = new builder.UniversalBot(connector, [
	//Initial welcome
    function (session) {
	            // A Card's Submit Action obj for reservation was received
	            if (session.message && session.message.value) {
	            	//Call the processSubmitAction Function to process reservation
	                processSubmitAction(session, session.message.value);
	                return;
	            }
    
            //ITERATE STATES-ACTION
		session.send("Welcome! This is the new Movies and Series recommendation service. Let me ask you a few questions.");
	
		builder.Prompts.text(session, "Which show type would you like to watch? Please select either 'Movie' or 'Series'");
	
	},
	function (session, results) {
		ShowType = results.response.toLowerCase();
		session.send("Perfect. Let's move on with the next question.");
	
		builder.Prompts.text(session, "Which genre are you interested in?");
	
	},
	function (session, results) {
		Genre = results.response.toLowerCase();
		session.send("Good. Let me ask you a final question.");
	
		builder.Prompts.text(session, "In which language do you want to hear the show?");
	
	},
	function (session, results) {
		Language = results.response.toLowerCase();
		var userCharacteristics = ShowType +  Genre +  Language;
		var showFound = false;
		for (i=0; i<characteristics.length; i++){
			if (userCharacteristics == characteristics[i]){
				showFound = true;
				session.send("Good. I have found a show that meets your criteria.");
				session.send("You can purchase it if you like: " + "***" + shows[i] + "***");
				try {
					bot.dialog(shows[i], require('./'+shows[i])); 
				} catch (error) { // Already exist dialog
					session.replaceDialog(shows[i], require('./'+shows[i]));
				}
		        session.beginDialog(shows[i]);
		    }
		}
	
		if (showFound == false){
			var random = parseInt(Math.random() * (characteristics.length - 1));
			session.send("Sorry, I have not found any show that meets your criteria");
			session.send("Alternatively, I may have found a show that could interest you. You can purchase it if you like: " + "***" + shows[random] + "***");
			try {
				bot.dialog(shows[random], require('./'+shows[random])); 
			} catch (error) { // Already exist dialog
				session.replaceDialog(shows[random], require('./'+shows[random]));				
			}
			session.beginDialog(shows[random]);
		}

	}
//END OF THE MAIN BODY
])

//Capture and process reservation
function processSubmitAction(session, value) {
	var reply=value.reply;
    if (reply.toLowerCase()=="no"){
        session.send("We are sorry you didn't want to buy it. You can search for a different one!");
    } else if (reply.toLowerCase()=="yes"){
        session.send("Congratulations, you just bought it :)!");
    } else {
        session.send("Congratulations, you just bought season(s) " + reply + " :)!");
	}
		session.cancelDialog();
        session.endDialog();
}