temp.js

'use strict';
const PAGE_ACCESS_TOKEN = process.env.PAGE_ACCESS_TOKEN;
const APIAI_TOKEN = process.env.APIAI_TOKEN;
const WEATHER_API_KEY = process.env.WEATHER_API_KEY;

const express = require('express');
const bodyParser = require('body-parser');
const request = require('request');
const apiai = require('apiai');

const app = express();
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));

const server = app.listen(process.env.PORT || 5000, () => {
  console.log('Express server listening on port %d in %s mode', server.address().port, app.settings.env);
});

/* For Facebook Validation */
app.get('/webhook', (req, res) => {
  if (req.query['hub.mode'] && req.query['hub.verify_token'] === 'tuxedo_cat') {
    res.status(200).send(req.query['hub.challenge']);
  } else {
    res.status(403).end();
  }
});


/* Handling all messenges */
app.post('/webhook', (req, res) => {
  //console.log(req.body);
  if (req.body.object === 'page') {
    req.body.entry.forEach((entry) => {
      entry.messaging.forEach((event) => {
        if (event.message && event.message.text) {
          sendMessage(event);
        }
      });
    });
    res.status(200).end();
  }
});

/* GET query from API.ai */
const apiaiApp = apiai('ae0e8abffbda4ad4844ac1bd52b5c1b2');

function sendMessage(event) {

  let sender = event.sender.id;
  let text = event.message.text;

  var apiai = apiaiApp.textRequest(text, {
    sessionId: 'user1'
  });

  apiai.on('response', function(response) {
    //console.log(response);
    //console.log("***********************");
    console.log(response.result.fulfillment.messages);
    let reply_text = response.result.fulfillment.speech;
    console.log(reply_text);
   /*if(reply_text != undefined){
      let customized_message = {
        text: reply_text
      };
    } else{
      */
      var custom_message = "";
      if(reply_text == undefined){
        custom_message = response.result.fulfillment.messages;
      } else {
        custom_message = {text: reply_text};
      }
      request({
          url: 'https://graph.facebook.com/v2.6/me/messages',
          qs: {access_token: 'EAADo1PANZCxEBAJc0LgCLfPEKNAPvnolUNDouf6ZAkDmZC5wxYZBGmdhlUi3BHyRyhwXtTJbCMldGsZCnO7z7UR8IQSTBx50YBgRxYCwSGiBL949eIelPqMv9ZBSgDZB9T2e7lJ9qvyHKEBqYmx9ZAHw0C2Q3lYh7ZA5HbeaaeEcGyAZDZD'},
          method: 'POST',
          json: {
            recipient: {id: sender},
            message: custom_message
          }
        }, (error, response) => {
          if (error) {
              console.log('Error sending message: ', error);
          } else if (response.body.error) {
              console.log('Error: ', response.body.error);
          }
        });
    
});
  apiai.on('error', (error) => {
    console.log(error);
  });

  apiai.end();

}
function UndefinedIntent(res){
  let errorMessage = "sry I can't get it D:";
        return res.state(400).json({
          status:{
            code: 400,
            errorType: errorMessage
          }
        });
}

app.post('/ai', (req, res) => {
  let action = req.body.result.action;
  //console.log(action);

  if (req.body.result.action === 'input.welcome') {
    console.log('Intent: welcome');
    
    request.get('https://b54c8cba.ngrok.io/api/user', (err, response, body) => {
      if (!err) {
        let json = JSON.parse(body);
        for(var i=0;i<json.length;i++){
          console.log(json[i].name);
        }
        /*return res.json({
          speech: json[0].name,
          displayText: json[0].name,
          source: 'mySrc'
        });*/
      } else {
        UndefinedIntent(res);
      }
    })
  }
  if (req.body.result.action === 'get_group_info') {
    console.log('Intent: get_group_info');
    
    request.get('https://b54c8cba.ngrok.io/api/newgetGroups', (err, response, body) => {
      if (!err) {
        let json = JSON.parse(body);
        var groups = "";
        let return_card = {
        "attachment": {
            "type": "template",
            "payload": {
                "template_type": "list",
                "elements": [
                    {
                        "title": "Classic T-Shirt Collection",
                        "subtitle": "See all our colors",
                        "image_url": "http://i.imgur.com/P9q4Gas.jpg", 
                        "default_action": {
                            "type": "web_url",
                            "url": "https://google.com",
                            "messenger_extensions": true,
                            "webview_height_ratio": "tall",
                            "fallback_url": "https://google.com"
                        },
                        "buttons": [
                            {
                                "title": "View",
                                "type": "web_url",
                                "url": "https://google.com",
                                "messenger_extensions": true,
                                "webview_height_ratio": "tall",
                                "fallback_url": "https://google.com"                        
                            }
                        ]
                    },
                    {
                        "title": "Classic White T-Shirt",
                        "subtitle": "100% Cotton, 200% Comfortable",
                        "image_url": "http://i.imgur.com/P9q4Gas.jpg", 
                        "default_action": {
                            "type": "web_url",
                            "url": "https://google.com",
                            "messenger_extensions": true,
                            "webview_height_ratio": "tall",
                            "fallback_url": "https://google.com"
                        },
                        "buttons": [
                            {
                                "title": "Shop Now",
                                "type": "web_url",
                                "url": "https://google.com",
                                "messenger_extensions": true,
                                "webview_height_ratio": "tall",
                                "fallback_url": "https://google.com"                        
                            }
                        ]                
                    }]
            }
          }         
      };
        /*for(var i=0;i<json.length;i++){
          console.log(json[i]);
          groups += json[i].name + " ";
        }*/
        return res.json({
          messages: return_card
        });
      } else {
        UndefinedIntent(res);
      }
    })
  }
  if (req.body.result.action === 'create_user'){
    console.log('Intent: create_user');

    request.post({url:"https://b54c8cba.ngrok.io/api/createUser", form: {
      "facebookid":'5856',
      "name": "apple"
    }}, function(err, res, body){ 
        //console.log(req.body);
      if(!err){
        console.log("create user successful");
      } else {
        return console.error('Error on create_user: ', err);
      }
    });
  }
});