hookBot/bot_test.js at master · epsiFacebookBot/hookBot · GitHub

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//
// This is main file containing code implementing the Express server and functionality for the Express echo bot.
//
'use strict';
const express = require('express');
const bodyParser = require('body-parser');
const request = require('request');
const path = require('path');
const fs = require('fs');
const token = "EAAWhdVgZA0nwBALALwNXQTk6vKsWsHJmH5PR9JjS7yuN4oWbYSE2auLJisSZBWELP9G7ZAUWk70XPPywyOqZCj2KMOiTOZCDNAjKZBEV01EpUc2joHVPMREmAUqPrQ4TFwyIleQmSZCov7kJsXYTlqJuUJUQDuWut3vIiW2fkMloAZDZD"


var messengerButton = "<html><head><title>Facebook Messenger Bot</title></head><body><h1>Facebook Messenger Bot</h1>This is a bot based on Messenger Platform QuickStart. For more details, see their <a href=\"https://developers.facebook.com/docs/messenger-platform/guides/quick-start\">docs</a>.<script src=\"https://button.glitch.me/button.js\" data-style=\"glitch\"></script><div class=\"glitchButton\" style=\"position:fixed;top:20px;right:20px;\"></div></body></html>";

// The rest of the code implements the routes for our Express server.
let app = express();

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

// Webhook validation
app.get('/webhook', function (req, res) {
    if (req.query['hub.mode'] === 'subscribe' &&
        req.query['hub.verify_token'] === "SVKGPaHrdAO4u1TLB27V2pF8mEiUkp5HTFNLedmVVvVunIpy61OQekzu0iUhbUnw") {
        console.log("Validating webhook");
        res.status(200).send(req.query['hub.challenge']);
    } else {
        console.error("Failed validation. Make sure the validation tokens match.");
        res.sendStatus(403);
    }
});

// Display the web page
app.get('/', function (req, res) {
    res.writeHead(200, {'Content-Type': 'text/html'});
    res.write(messengerButton);
    res.end();
});

// Message processing
app.post('/webhook', function (req, res) {
    console.log(req.body);
    var data = req.body;

    // Make sure this is a page subscription
    if (data.object === 'page') {

        // Iterate over each entry - there may be multiple if batched
        data.entry.forEach(function (entry) {
            var pageID = entry.id;
            var timeOfEvent = entry.time;

            // Iterate over each messaging event
            entry.messaging.forEach(function (event) {
                if (event.message) {
                    receivedMessage(event);
                } else if (event.postback) {
                    receivedPostback(event);
                } else {
                    console.log("Webhook received unknown event: ", event);
                }
            });
        });

        res.sendStatus(200);
    }
});

// Incoming events handling
function receivedMessage(event) {
    var senderID = event.sender.id;
    var recipientID = event.recipient.id;
    var timeOfMessage = event.timestamp;
    var message = event.message;

    console.log("Received message for user %d and page %d at %d with message:",
        senderID, recipientID, timeOfMessage);
    console.log(JSON.stringify(message));

    var messageId = message.mid;

    var messageText = message.text;
    var messageAttachments = message.attachments;

    if (messageText) {

        addMessageToBack({
            recipient: {
                id: recipientID
            },
            message: {
                text: messageText
            }
        });
        // If we receive a text message, check to see if it matches a keyword
        // and send back the template example. Otherwise, just echo the text we received.
        switch (messageText) {
            case 'chat':
                sendImageMessage(senderID, messageText);
                sendTextMessage(senderID, "N'est-il pas magnifique ?");
                break;
            case 'salut':
                sendTextMessage(senderID, messageText + " comment tu vas ?");
                break;
            case 'merci':
                sendTextMessage(senderID, " je t'en prie.");
                break;
            case 'bien et toi ?':
                sendTextMessage(senderID, "ça va ! je suis de bonne humeur aujourd'hui car j'ai vu un chat. Écrit ce mot justement (chat)");
                break;

            default:
                sendTextMessage(senderID, recoveryFile());
                break;
        }
    } else if (messageAttachments) {
        sendTextMessage(senderID, "Merci pour la pièce jointe");
    }
}


/**
 Fonction permettant de récupérer une ligne d'un texte défini
 Cette fonction retournera une phrase aléatoire du fichier texte2.txt
 **/
function recoveryFile() {


    var lines = fs.readFileSync(path.resolve(__dirname) + "/text2.txt", "utf8").split("\n");
    var index = Math.floor(Math.random() * (lines.length - 1));
    return lines[index];

}

function sendImageMessage(sender, text) {
    let data =
        {
            "attachment": {
                "type": "image",
                "payload": {
                    "url": "https://www.wikichat.fr/wp-content/uploads/sites/2/comment-soigner-une-plaie-dun-chat.jpg"
                }
            }
        }
    // let access_token = "mon token de page";
    request({
        url: 'https://graph.facebook.com/v2.6/me/messages',
        qs: {access_token: token},
        method: 'POST',
        json: {
            recipient: {id: sender},
            message: data,
        }
    }, function (error, response, body) {
        if (error) {
            console.log('Error sending image messages: ', error)
        } else if (response.body.error) {
            console.log('Error: ', response.body.error)
        }
    })
}

function receivedPostback(event) {
    var senderID = event.sender.id;
    var recipientID = event.recipient.id;
    var timeOfPostback = event.timestamp;

    // The 'payload' param is a developer-defined field which is set in a postback
    // button for Structured Messages.
    var payload = event.postback.payload;

    console.log("Received postback for user %d and page %d with payload '%s' " +
        "at %d", senderID, recipientID, payload, timeOfPostback);

    // When a postback is called, we'll send a message back to the sender to
    // let them know it was successful
    sendTextMessage(senderID, "Postback called");
}

//////////////////////////
// Sending helpers
//////////////////////////
function sendTextMessage(recipientId, messageText) {
    var messageData = {
        recipient: {
            id: recipientId
        },
        message: {
            text: messageText
        }
    };

    callSendAPI(messageData);
}

function sendGenericMessage(recipientId) {


}

function callSendAPI(messageData) {
    request({
        uri: 'https://graph.facebook.com/v2.6/me/messages',
        qs: {access_token: token},
        method: 'POST',
        json: messageData

    }, function (error, response, body) {
        if (!error && response.statusCode == 200) {
            var recipientId = body.recipient_id;
            var messageId = body.message_id;

            console.log("Successfully sent generic message with id %s to recipient %s",
                messageId, recipientId);
            addMessageToBack(messageData);
        } else {
            console.error("Unable to send message.");
            console.error(response);
            console.error(error);
        }
    });
}

function addMessageToBack(messageData) {

    messageData = {
        mid: messageData.recipient.id,
        text: messageData.message.text
    };

    request({
        uri: (process.env.BACK_URL || 'http://127.0.0.1:8080') + '/message/add',
        qs: {access_token: token},
        method: 'POST',
        json: messageData

    }, function (error, response, body) {
        if (!error && response.statusCode == 200) {
            var recipientId = body.recipient_id;
            var messageId = body.message_id;

            console.log("Successfully sent message to back.");
        } else {
            console.error("Unable to send message to back.");
            console.error(response);
            console.error(error);
        }
    });

}

// Set Express to listen out for HTTP requests
var server = app.listen(process.env.PORT || 3000, function () {
    console.log("Listening on port %s", server.address().port);
});