// Copyright 2018 Google LLC

//

// Licensed under the Apache License, Version 2.0 (the "License");

// you may not use this file except in compliance with the License.

// You may obtain a copy of the License at

//

// http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing, software

// distributed under the License is distributed on an "AS IS" BASIS,

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

// See the License for the specific language governing permissions and

// limitations under the License.

'use strict';

// [START gae_websockets_app]

// [START appengine_websockets_app]

const app = require('express')();

app.set('view engine', 'pug');

const server = require('http').Server(app);

const io = require('socket.io')(server);

app.get('/', (req, res) => {

res.render('index.pug');

});

io.on('connection', socket => {

socket.on('chat message', msg => {

io.emit('chat message', msg);

});

});

if (module === require.main) {

const PORT = parseInt(process.env.PORT) || 8080;

server.listen(PORT, () => {

console.log(`App listening on port ${PORT}`);

console.log('Press Ctrl+C to quit.');

});

}

// [END appengine_websockets_app]

// [END gae_websockets_app]

module.exports = server;