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index.js
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index.js
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// https://www.facebook.com/Librer%C3%ADa-Bot-281015612274685/
var express = require('express');
var bodyParser = require('body-parser');
var request = require('request');
const APP_TOKEN = 'EAALCyAFgXNUBANk8uPlfmIyreqrtLKKyWQ5zEWg4DXpEP7aqjgOZCeejigvov1oZBITTDJ7iA3UU4zyN7YyYfvZCfSL0mgdqxuubHiA2fzFyceYyis2fJHmXvtE5N1NzP1sumj5kjjZCXZCh0vsC45kDS6cRVTjJBzzrnqh9S2QZDZD';
var app = express();
app.use(bodyParser.json());
// Start server with Node
app.listen(3001, function(){
console.log('Servidor en puerto 3001')
});
app.get('/', function(req, res){
res.send('Bienvenido al taller');
});
// route for Webhook previously configured in facebook
app.get('/webhook', function(req, res){
if(req.query['hub.verify_token'] === 'test_token_say_hello'){
res.send(req.query['hub.challenge']);
} else {
res.send('Permiso denegado.');
}
});
// Message structure
//{ object: 'page',
// entry:
// [ { id: '281015612274685',
// time: 1470515944686,
// messaging: [Object] } ] }
app.post('/webhook', function(req, res){
var data = req.body;
if(data.object == 'page'){
data.entry.forEach(function(pageEntry){
pageEntry.messaging.forEach(function(messagingEvent){
if(messagingEvent.message) {
receiveMessage(messagingEvent);
}
});
});
// Send a notification to facebook indicating successfully received message(200)
res.sendStatus(200);
}
});
// Function to get message
function receiveMessage(event){
var senderID = event.sender.id;
var messageText = event.message.text;
evaluateMessage(senderID, messageText);
}
function evaluateMessage(recipientId, message){
var finalMessage = '';
if(isContain(message, 'ayuda')){
finalMessage = 'Por el momento no te puedo ayudar';
} else if(isContain(message, 'gato')) {
sendMessageImage(recipientId, finalMessage)
} else if(isContain(message, 'clima')) {
getWeather(function(temperature){
message = getMessageWeather(temperature);
sendMessageText(recipientId, message);
})
} else if(isContain(message, 'info')) {
sendMessageTemplate(recipientId);
} else {
finalMessage = 'solo se repetir las cosas : ' + message;
}
sendMessageText(recipientId, finalMessage);
}
function sendMessageText(recipientId, message){
//TODO: API imgur
var messageData = {
recipient: {
id: recipientId
},
message: {
text: message
}
}
callSendAPI(messageData);
}
function sendMessageImage(recipientId, message){
var messageData = {
recipient: {
id: recipientId
},
message: {
attachment: {
type: 'image',
payload: {
url: "http://i.imgur.com/SOFXhd6.jpg"
}
}
}
}
callSendAPI(messageData);
}
function sendMessageTemplate(recipientId){
//TODO: API imgur
var messageData = {
recipient: {
id: recipientId
},
message: {
attachment: {
type: 'template',
payload: {
template_type: 'generic',
elements: [ elementTemplate() ]
}
}
}
}
callSendAPI(messageData);
}
function elementTemplate(){
return {
title: 'Andres Vizcaino',
subtitle: 'Taller Código facilito',
item_url: 'https://www.facebook.com/codigofacilito/?fref=ts',
image_url: 'http://i.imgur.com/SOFXhd6.jpg',
buttons: [ buttonTemplate() ]
}
}
function buttonTemplate(){
return {
type: 'web_url',
url: 'https://www.facebook.com/codigofacilito/?fref=ts',
title: 'CF'
}
}
// It creates an object that facebook undestand
function callSendAPI(messageData){
request({
uri: 'https://graph.facebook.com/v2.6/me/messages',
qs: { access_token: APP_TOKEN },
method: 'POST',
json: messageData
}, function(error, response, data){
if(error){
console.log('No es posible enviar el mensaje.');
} else {
console.log('Mensaje enviado.')
}
})
}
function getMessageWeather(temperature){
if(temperature > 30){
return "Nos encontramos a " + temperature + " hay demasiado calor";
} else {
return "Nos encontramos a " + temperature + " es un bonito dia para salir";
}
}
function getWeather(callback){
request('http://api.geonames.org/findNearByWeatherJSON?lat=16.750000&lng=-93.1166&username=andru1989',
function(error, response, data){
if(!error){
var response = JSON.parse(data);
var temperature = response.weatherObservation.temperature;
callback(temperature);
}
});
}
function isContain(sentence, word){
return sentence.indexOf(word) > -1;
}