app.js
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//aws polly tts
const AWS = require('aws-sdk');
const fs=require('fs');
const { LineClient } = require('messaging-api-line');
require("dotenv").config({path : '.env'});
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';
// 검색 기능 api_url
var search_api_url = 'https://openapi.naver.com/v1/search/encyc.json';
//polly
const Polly =new AWS.Polly({
signatureVersion: 'v4',
region: 'ap-northeast-2',
accessKeyId:process.env.accesskeyid,
secretAccessKey:process.env.secretaccesskey
});
// Naver Auth Key
//새로 발급받은 naver papago api id, pw 입력
var client_id = process.env.client_id;
var client_secret = process.env.client_secret;
const config = {
channelAccessToken: process.env.channelAccessToken,
channelSecret: process.env.channelSecret,
};
// Microsoft Azure - Computer Vision REST API
let subscriptionKey = process.env.COMPUTER_VISION_SUBSCRIPTION_KEY
let endpoint = process.env.COMPUTER_VISION_ENDPOINT
if (!subscriptionKey) { throw new Error('Set your environment variables for your subscription key and endpoint.') }
var uriBase = endpoint + 'vision/v2.1/ocr'
// create LINE SDK client
const client = new line.Client(config);
const for_audio_client=LineClient.connect({
accessToken: process.env.channelAccessToken,
channelSecret: process.env.channelSecret,
});
// create Express app
// about Express itself: https://expressjs.com/
// register a webhook handler with middleware
// about the middleware, please refer to doc
app.use(express.static('public'));
app.post('/webhook', line.middleware(config), (req, res) => {
Promise
.all(req.body.events.map(handleEvent))
.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') {
if (event.message.type === 'image')
return new Promise(function(resolve, reject) {
const imageStream = fs.createWriteStream('public/image.jpeg')
client.getMessageContent(event.message.id)
.then((stream) => {
stream.on('data', (chunk) => {
imageStream.write(chunk)
})
stream.on('error', (err) => {
console.log(err)
})
stream.on('end', () => {
imageStream.end()
const imageUrl = 'https://panguin.ml/image.jpeg'
const params = {
'language': 'unk',
'detectOrientation': 'true',
}
const options = {
uri: uriBase,
qs: params,
body: '{"url": ' + '"' + imageUrl + '"}',
headers: {
'Content-Type': 'application/json',
'Ocp-Apim-Subscription-Key' : subscriptionKey
}
}
request.post(options, (error, response, body) => {
if (error) {
console.log('Error: ', error)
return
}
var lines = JSON.parse(body).regions[0].lines
var detected_text = ''
for (var i = 0; i < lines.length; i++) {
for (var j = 0; j < lines[i].words.length; j++)
detected_text += lines[i].words[j].text + ' '
detected_text += '\n'
}
console.log(detected_text)
var text_before_translation = detected_text.split('\n').join('').toLowerCase()
console.log(text_before_translation)
//언어 감지 option
var detect_options = {
url: languagedetect_api_url,
form: {'query': text_before_translation},
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') {
source = detect_body.langCode == 'ko' ? 'ko' : 'en'
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': text_before_translation},
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)
result.text = '감지된 텍스트 :\n' + detected_text + '\n번역된 텍스트 :\n' + objBody.message.result.translatedText
// Message 잘 찍히는지 확인
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)
}
}
})
})
})
})
})
else
// ignore non-text-message event
return Promise.resolve(null);
}
// 검색 기능
else if(event.message.text.substr(0,4) == "!검색 "){
return new Promise(function(resolve, reject) {
var text_len = event.message.text.length;
var title = event.message.text.substr(4, text_len - 4);
var search_options = {
uri : search_api_url,
qs : {query : title, display : 1},
headers: {'X-Naver-Client-Id': client_id, 'X-Naver-Client-Secret': client_secret}
};
request.get(search_options, function(error, response, body){
if (!error && response.statusCode == 200){
// 검색 결과가 없을 경우
if(JSON.parse(body).items == ""){
var result = { type : 'text', text : "검색 결과가 없습니다."};
}
else{
var link = JSON.parse(body).items[0].link;
var description = JSON.parse(body).items[0].description;
var result = { type: 'text', text:
title + " : \n" + description +
"\n\nLink : \n" + link
};
}
client.replyMessage(event.replyToken,result).then(resolve).catch(reject);
}
})
})
}
else {
// 번역 기능 & 음성 기능
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);
if (detect_options.form.query == '음성') {
console.log('audio streaming');
if (!error && response.statusCode == 200) {
console.log(response.statusCode);
for_audio_client.replyAudio(event.replyToken, {
"originalContentUrl": "https://panguin.ml/speech.m4a",
"duration": 24000
}).then(resolve).catch(reject);
}
}
//번역은 한국어->영어 / 영어->한국어만 지원
else if (detect_body.langCode == 'ko' || detect_body.langCode == 'en') {
source = detect_body.langCode == 'ko' ? 'ko' : 'en';
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);
result.text = objBody.message.result.translatedText;
//번역된 문자 audio로 저장
if (options.form.target == 'ko') {
let audio_options = {
'Text': result.text,
'OutputFormat': 'mp3',
'VoiceId': 'Amy',
"LanguageCode": 'ko-KR'
};
} else if (options.form.target == 'en') {
let audio_options = {
'Text': result.text,
'OutputFormat': 'mp3',
'VoiceId': 'Amy',
"LanguageCode": 'en-US'
};
}
Polly.synthesizeSpeech(audio_options, (err, data) => {
console.log("check");
if (err) {
throw err;
} else if (data) {
if (data.AudioStream instanceof Buffer) {
fs.writeFile("public/speech.m4a", data.AudioStream, function (err) {
if (err) {
return console.log(err);
}
console.log("The file was saved!");
});
}
}
});
// Message 잘 찍히는지 확인
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(80, function () {
console.log('Linebot listening on port 80!');
});