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index.js
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index.js
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const line = require('@line/bot-sdk');
const express = require('express');
const metroInfo_handler = require('./metroInfo_handler');
const flex_msg = require('./flexMessage')
const config = {
channelAccessToken: process.env.LINE_ACCESS_TOKEN,
channelSecret: process.env.CHANNEL_SECRET,
};
const client = new line.Client(config);
const {getMetroInfo, listAllStations} = metroInfo_handler()
const app = express();
app.get('/', async (req,res)=>{
res.send('ok')
})
app.post('/callback', line.middleware(config), (req, res) => {
Promise
.all(req.body.events.map(handleEvent))
.then((result) => res.json(result))
.catch((err) => {
console.error(err);
res.status(500).end();
});
});
const handleEvent = async e => {
if(e.type==='follow'){
return client.replyMessage(e.replyToken, flex_msg.WELCOME_FLEX)
}else if (e.type === 'message') {
if(e.message.type === 'text'){
let reply = {type:'text', text:'?'}
if(e.message.text[e.message.text.length-1]==='線'){
reply = await listAllStations(e.message.text)
}else if(e.message.text.includes('嗨')||e.message.text.includes('哈囉')||e.message.text.includes('你好')){
reply = {type:'text', text:'嗨!忘記怎麼問我問題可以輸入「使用手冊」喔。'}
}else if(e.message.text[e.message.text.length-1]==="?" || e.message.text[e.message.text.length-1]==="?"){
reply = {type:'text', text:'請輸入正確的指令我才能回答你喔,忘記怎麼問可以輸入「使用手冊」。'}
}else{
switch (e.message.text) {
case '使用手冊':
reply = flex_msg.USER_MANUAL_FLEX
break;
case '捷運圖':
reply = { type: 'image', originalContentUrl: 'https://tour.ntpc.gov.tw/Content/Upload/ContentPage/1d826ca4-e4bd-4197-a942-51978c772202.png', previewImageUrl:'https://tw.piliapp.com/static/s3/apps/mrt_taiwan/taipei/ogimage_zh.png' }
break;
case '搜尋捷運站':
reply = flex_msg.FIND_STATION_FLEX
break;
default:
reply = await getMetroInfo(e.message.text);
break;
}
}
return client.replyMessage(e.replyToken, reply);
}
}
return Promise.resolve(null);
}
// listen on port
const port = process.env.PORT || 3000;
app.listen(port, () => {
console.log(`listening on ${port}`);
});