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app.js
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app.js
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const express = require('express');
const path = require('path');
const favicon = require('serve-favicon');
const logger = require('morgan');
const cookieParser = require('cookie-parser');
const bodyParser = require('body-parser');
const crypto = require("crypto");
const fs = require('fs');
const conf = require('./conf');
const https = require('https');
const googlehome = require('google-home-notifier');
// load config
const env = process.env.NODE_ENV || "development";
const config = require(path.join(__dirname, './', 'config.json'))[env];
const lineUrl = config.lineUrl;
const lineChannelAccessToken = config.lineChannelAccessToken;
const lineChannelSecret = config.lineChannelSecret;
const serverPort = config.serverPort;
const serverIp='192.168.1.4';
// load letsencrypt files.(build https server)
var options = {
key: fs.readFileSync(conf.key),
cert: fs.readFileSync(conf.fullchain)
}
var app = express();
// initialization
app.use(logger('dev'));
app.use(bodyParser.json());
//app.use(bodyParser.urlencoded({
//extended: false
//}));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
// google-home config
var deviceName = 'kamohome';
var language = 'ja';
googlehome.device(deviceName,language);
//googlehome.accent('jp');
googlehome.ip(serverIp, language);
var urlencodedParser = bodyParser.urlencoded({ extended: false });
// run server
var server = https.createServer(options, app);
console.log('Server is online. Port:' + serverPort);
// Validate signature
const validate_signature = function(signature, body) {
return signature == crypto.createHmac('sha256', lineChannelSecret).update(new Buffer(JSON.stringify(body), 'utf8')).digest('base64');
};
app.get('/', function(req, res) {
res.write('Hello world');
res.end();
});
app.post('/', function(req, res) {
console.log(req.body);
res.send('POST request to the homepage');
});
// recieve POST message. Endpoint /webhook
app.post('/webhook', urlencodedParser,function(req, res) {
// Validate signature
if (!validate_signature(req.headers['x-line-signature'], req.body)) {
console.log("Error:Validation");
res.status(401);
return null;
}
var webhookEventObject = req.body.events[0];
var text = webhookEventObject.message.text;
console.log("text:" + text);
if (text) {
try {
googlehome.notify(text, function(notifyRes) {
console.log("Success");
console.log(notifyRes);
console.log(deviceName + ' will say: ' + text);
res.send(deviceName + ' will say: ' + text + '\n');
});
} catch (err) {
console.log("Error");
console.log(err);
res.sendStatus(500);
res.send(err);
}
} else {
console.log("else phase");
res.send('Please POST "text=Hello Google Home"');
}
// res.writeHead(200, {
// "Content-type": "text/plain"
// });
//res.end();
});
app.post('/googlehome', urlencodedParser,function(req, res) {
// Validate signature
console.log(req.body);
var text = req.body.text;
if(text){
try{
googlehome.notify(text,function(notifyRes){
res.send(deviceName + 'will say:'+text+'\n');
});
} catch(err){
res.sendStatus(500);
res.send(err);
}
}
//res.writeHead(200, {
// "Content-type": "text/plain"
// });
//res.end();
});
// server listen
server.listen(serverPort);