controller.js
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let request = require('request'),
template = require('./template');
// Handles message events
exports.handleMessage = (sender_psid, received_message) => {
let response;
if(received_message.text === "처음으로"){
response = template.goToGreetTemplate(received_message);
}else{
response = template.choiceLectProfTemplate(received_message);
}
callSendAPI(sender_psid, response);
}
exports.handlePostback = (sender_psid, received_postback) => {
let response;
// Get the payload for the postback
let payload = received_postback.payload;
// Set the response based on the postback payload
if(payload === 'Greeting'){
response = template.greetingTemplate();
callSendAPI(sender_psid, response);
}else if(payload.substr(0,14)=== 'CHOICE_BY_PROF'){
handlePostback_choiceByProf(sender_psid, received_postback);
}else if(payload.substr(0,14)=== 'CHOICE_BY_LECT'){
handlePostback_choiceByLect(sender_psid, recieved_postback);
}else if(payload.substr(0,14) ==='CHOICE_BY_HELP'){
handlePostback_help(sender_psid, recieved_postback);
}else if(payload.substr(0,8) === 'MoreRate'){
response = template.moreRateTemplate(received_postback);
callSendAPI(sender_psid, response);
}
}
const handlePostback_choiceByProf = (sender_psid, received) => {
let response;
let stat = received.payload.substr(14,6);
if(stat === 'stat_0'){
response = template.getProfNameTemplate(received);
}else if(stat === 'stat_2'){
response = template.moreProfTemplate(received);
}else if(stat === 'stat_3'){
response = template.rateTemplate(received);
}
callSendAPI(sender_psid, response);
}
const handlePostback_choiceByLect = (sender_psid, recieved) => {
let response;
let stat = recieved.payload.substr(14,6);
if(stat === 'stat_0'){
response = template.getLectNameTemplate(received);
}else if(stat === 'stat_2'){
response = template.moreLectTemplate(received);
}else if(stat === 'stat_3'){
response = template.rateTemplate(received);
}
callSendAPI(sender_psid, response);
}
const handlePostback_help = (sender_psid, received) => {
let response;
let stat = received.payload.substr(14);
if(stat === 'stat_0'){
response = template.howToTemplate(received);
}
callSendAPI(sender_psid, response);
}
// Sends response messages via the Send API
const callSendAPI = (sender_psid, response, cb = null) => {
console.log('response:'+response);
// Send the HTTP request to the Messenger Platform
request({
"url": "https://graph.facebook.com/v2.6/me/messages",
"qs": { "access_token": process.env.PAGE_ACCESS_TOKEN },
"method": "POST",
"json": {
recipient: {id: sender_psid},
message: response
}
}, (err, res, body) => {
if (err) {
console.error("Unable to send message:" + err);
}
});
}