app.js
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var express = require('express');
var app = express();
const line = require('@line/bot-sdk');
//papago api
var request = require('request');
//번역 api_url
var translate_api_url = 'https://openapi.naver.com/v1/papago/n2mt';
//언어감지 api_url
var languagedetect_api_url = 'https://openapi.naver.com/v1/papago/detectLangs';
// Naver Auth Key
//새로 발급받은 naver papago api id, pw 입력
var client_id = '743DE__EstcaLZzEsO5f';
var client_secret = 'Y865wTpZ5y';
const config = {
channelAccessToken: 'TgqvFO0cHkSMEiRkJhLMCbfNzzO4Yhpdf8Ov+cr4tBPh2teSilW22TfEfTlxMHFBGufqslip3EYSdppQTCAThCEzf4xc6q8YEtPjF66hmyGOpLZoPK41VTWorrkOmBmmqysb11rElm50Wz6kvM/gogdB04t89/1O/w1cDnyilFU=',
channelSecret: 'ff1a934d000f5bfa265ed9fe2eedb0e7',
};
// create LINE SDK client
const client = new line.Client(config);
// create Express app
// about Express itself: https://expressjs.com/
// ELB health checker
app.get('/', (req, res) => {
console.log('hello,,,,');
res.writeHead(200, { "Content-Type": "text/html" });
res.end();
});
// register a webhook handler with middleware
// about the middleware, please refer to doc
app.post('/webhook', line.middleware(config), (req, res) => {
Promise
.all(req.body.events.map(event => handleEvent(event)))
.then((result) => res.json(result))
.catch((err) => {
console.error(err);
res.status(200).end();
});
});
// event handler
function handleEvent(event) {
if (event.type !== 'message' || event.message.type !== 'text') {
// ignore non-text-message event
return Promise.resolve(null);
}
return new Promise(function(resolve, reject) {
//언어 감지 option
var detect_options = {
url : languagedetect_api_url,
form : {'query': event.message.text},
headers: {'X-Naver-Client-Id': client_id, 'X-Naver-Client-Secret': client_secret}
};
//papago 언어 감지
request.post(detect_options,function(error,response,body){
console.log(response.statusCode);
if(!error && response.statusCode == 200){
var detect_body = JSON.parse(response.body);
var source = '';
var target = '';
var result = { type: 'text', text:''};
//언어 감지가 제대로 됐는지 확인
console.log(detect_body.langCode);
//번역은 한국어->영어 / 영어->한국어만 지원
if(detect_body.langCode == 'ko'||detect_body.langCode == 'en'||detect_body.langCode=='ru'||detect_body.langCode=='ja'){
source = detect_body.langCode;
if(source!='ko'){
target='ko';
}
// target = source == 'ko' ? 'en':'ko';
//papago 번역 option
var options = {
url: translate_api_url,
// 한국어(source : ko), 영어(target: en), 카톡에서 받는 메시지(text)
form: {'source':source, 'target':target, 'text':event.message.text},
headers: {'X-Naver-Client-Id': client_id, 'X-Naver-Client-Secret': client_secret}
};
// Naver Post API
request.post(options, function(error, response, body){
// Translate API Sucess
if(!error && response.statusCode == 200){
// JSON
var objBody = JSON.parse(response.body);
// Message 잘 찍히는지 확인
result.text = objBody.message.result.translatedText;
console.log(result.text);
//번역된 문장 보내기
client.replyMessage(event.replyToken,result).then(resolve).catch(reject);
}
});
}
// 메시지의 언어가 영어 또는 한국어가 아닐 경우
else{
result.text = '언어를 감지할 수 없습니다. \n 번역 언어는 한글 또는 영어만 가능합니다.';
client.replyMessage(event.replyToken,result).then(resolve).catch(reject);
}
}
});
});
}
app.listen(3000, function () {
console.log('Linebot listening on port 3000!');
});