api/server.js at master · CryptoChat-dev/api · GitHub

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// Imports

constexpress=require('express');
constapp=express();
constserver=require('http').Server(app);
constcompression=require('compression');
constminify=require('express-minify');
varss=require('socket.io-stream');

// File imports

constconfig=require('./config.js');

// Express middlewares

app.use(compression());
app.use(minify());
app.use(express.static('public'));

// API Routes

app.get('*',function(req,res){// The 404 Route (ALWAYS Keep this as the last route)
res.redirect(config.webserver.splash);
});

constio=require('socket.io')(server,{maxHttpBufferSize: config.api.maxSize});

// SocketIO

constrooms={}

io.on('connection',(socket)=>{
socket.on('chat event',(data)=>{
// Listens for chat messages from clients
if(typeofdata==='object'){
// Make sure the data received is a JS object
varnow=newDate();
if(data.roomName===undefined||data.user_name===undefined||data.message===undefined||data.hmac===undefined){
// Check if the fields are present
console.log(`${now} - Event had invalid fields.`)
return;
}

io.to(data.roomName).emit('chat response',{
// Broadcasts the message to the Socket room
user_name: data.user_name,
message: data.message,
hmac: data.hmac
});
return;
}
console.log(`${now} - Event was rejected: ${data}`)
});

socket.on('join',(data)=>{
// Listens for join events from clients
if(typeofdata==='object'){
// Make sure the data received is a JS object
varnow=newDate();
if(data.roomName===undefined||data.user_name===undefined){
// Make sure the data received is a JS object
console.log(`${now} - Event had invalid fields.`)
return;
}
// Join the socket to the requested room
socket.join(data.roomName);
io.to(data.roomName).emit('join response',{
// Broadcasts the username as a join response to the Socket room
user_name: data.user_name
});

// Update the in-mem user count
constuserCount=rooms[data.roomName];

if(userCount===undefined){
// If the user count doesn't exist
// set it to 1
rooms[data.roomName]=1;
io.to(data.roomName).emit('user count',{
count: 1
});
}else{
// Otherwise, add 1 to it
rooms[data.roomName]=userCount+1;
io.to(data.roomName).emit('user count',{
count: userCount+1
});
}

return;
}
console.log(`${now} - Event was rejected: ${data}`)
});

socket.on('leave',(data)=>{
// Listens for leave events from clients
socket.disconnect();
if(typeofdata==='object'){
// Make sure the data received is a JS object
varnow=newDate();
if(data.roomName===null||data.user_name===undefined){
// Make sure the data received is a JS object
console.log(`${now} - Event had invalid fields.`)
return;
}
// Leave the socket from the requested room
socket.leave(data.roomName)
io.to(data.roomName).emit('leave response',{
// Broadcasts the username as a leave response to the Socket room
user_name: data.user_name
});

// Update the in-mem user count
constuserCount=rooms[data.roomName];

if(userCount===undefined){
// If the user count doesn't exist
// do nothing
return;
}elseif(userCount===1){
// If the user is the only one in the room, set the count to 0
rooms[data.roomName]=0;
return;
}else{
// Otherwise, remove 1 from it
rooms[data.roomName]=userCount-1;
io.to(data.roomName).emit('user count',{
count: userCount-1
});
}

return;
}
console.log(`${now} - Event was rejected: ${data}`)
});

ss(socket).on('file event',function(stream,data){
// Listens for file uploads
varnow=newDate();

console.log(`${now} - File event received`)
if(data.user_name===undefined||data.name===undefined||data.type===undefined||data.data===undefined||data.hmac===undefined){
console.log(`${now} - Event had invalid fields.`);
return;
}

io.to(data.roomName).emit('file response',{
user_name: data.user_name,
name: data.name,
type: data.type,
data: data.data,
hmac: data.hmac
});

io.to(socket.id).emit('file progress',{
finished: true
});
});

});

// Server start

server.listen(config.webserver.port,config.webserver.host,()=>{
console.log('listening on *:'+config.webserver.port);
});