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server.js
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server.js
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const express = require('express');
const app = express();
const server = require('http').createServer(app);
const io = require('socket.io').listen(server);
const config = require('./config');
usernames = [];
const encodeHTML = (data) => {
return data.replace(/&/g, '&').replace(/</g, '<').replace(/"/g, '"');
}
server.listen(process.env.PORT || config.PORT);
app.use(express.static("."));
// Send index.html file
app.get('/', (req, res, next) => {
res.sendFile(__dirname + '/index.html');
});
io.sockets.on('connection', (socket) => {
socket.on('add_new_user', (data, cb) => {
socket.username = data;
if(usernames.indexOf(data) !== -1) {
cb(false);
} else {
cb(true);
socket.username = data;
usernames.push(socket.username);
updateUsernames();
}
});
// Update Usernames
function updateUsernames() {
io.sockets.emit('usernames', usernames);
}
// Get User
socket.on('getUser', () => {
socket.emit('get_user', socket.username);
});
// Get User From Message
socket.on('getUserFromMessage', () => {
socket.emit('getUserFromMsg', socket.username);
});
// Send Message
socket.on('send_message', (data, time) => {
io.sockets.emit('new_message', {msg: encodeHTML(data), user: socket.username, time });
});
// Disconnect
socket.on('disconnect', (data) => {
if(!socket.username) return;
usernames.splice(usernames.indexOf(socket.username), 1);
updateUsernames();
})
});