init

.gitignore

@@ -0,0 +1,2 @@
+/node_modules
+node_modules

app.js

@@ -0,0 +1,43 @@
+var createError = require('http-errors');
+var express = require('express');
+var path = require('path');
+var cookieParser = require('cookie-parser');
+var logger = require('morgan');
+
+var socketsrv = require("./socketsrv");
+
+var indexRouter = require('./routes/index');
+var usersRouter = require('./routes/users');
+
+var app = express();
+
+// view engine setup
+app.set('views', path.join(__dirname, 'views'));
+app.set('view engine', 'jade');
+
+app.use(logger('dev'));
+app.use(express.json());
+app.use(express.urlencoded({ extended: false }));
+app.use(cookieParser());
+app.use(express.static(path.join(__dirname, 'public')));
+
+app.use('/', indexRouter);
+app.use('/users', usersRouter);
+
+// catch 404 and forward to error handler
+app.use(function(req, res, next) {
+  next(createError(404));
+});
+
+// error handler
+app.use(function(err, req, res, next) {
+  // set locals, only providing error in development
+  res.locals.message = err.message;
+  res.locals.error = req.app.get('env') === 'development' ? err : {};
+
+  // render the error page
+  res.status(err.status || 500);
+  res.render('error');
+});
+
+module.exports = {app, socketsrv};

bin/www

@@ -0,0 +1,92 @@
+#!/usr/bin/env node
+
+/**
+ * Module dependencies.
+ */
+
+var {app, socketsrv} = require('../app');
+//var socketsrv = require('../socketsrv');
+var debug = require('debug')('quiz-tftb:server');
+var http = require('http');
+
+/**
+ * Get port from environment and store in Express.
+ */
+
+var port = normalizePort(process.env.PORT || '12123');
+app.set('port', port);
+
+/**
+ * Create HTTP server.
+ */
+
+var server = http.createServer(app);
+socketsrv.io.attach(server);
+
+/**
+ * Listen on provided port, on all network interfaces.
+ */
+
+server.listen(port);
+server.on('error', onError);
+server.on('listening', onListening);
+
+/**
+ * Normalize a port into a number, string, or false.
+ */
+
+function normalizePort(val) {
+  var port = parseInt(val, 10);
+
+  if (isNaN(port)) {
+    // named pipe
+    return val;
+  }
+
+  if (port >= 0) {
+    // port number
+    return port;
+  }
+
+  return false;
+}
+
+/**
+ * Event listener for HTTP server "error" event.
+ */
+
+function onError(error) {
+  if (error.syscall !== 'listen') {
+    throw error;
+  }
+
+  var bind = typeof port === 'string'
+    ? 'Pipe ' + port
+    : 'Port ' + port;
+
+  // handle specific listen errors with friendly messages
+  switch (error.code) {
+    case 'EACCES':
+      console.error(bind + ' requires elevated privileges');
+      process.exit(1);
+      break;
+    case 'EADDRINUSE':
+      console.error(bind + ' is already in use');
+      process.exit(1);
+      break;
+    default:
+      throw error;
+  }
+}
+
+/**
+ * Event listener for HTTP server "listening" event.
+ */
+
+function onListening() {
+  var addr = server.address();
+  var bind = typeof addr === 'string'
+    ? 'pipe ' + addr
+    : 'port ' + addr.port;
+  debug('Listening on ' + bind);
+}

package-lock.json

@@ -0,0 +1,897 @@
+{
+  "name": "quiz-tftb",
+  "version": "0.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
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+    },
+    "@types/cookie": {
+      "version": "0.4.1",
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+    },
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+      "resolved": "https://registry.npmjs.org/@types/cors/-/cors-2.8.12.tgz",
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+    },
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+    },
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+    "yargs": {
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+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz",
+      "integrity": "sha1-9+572FfdfB0tOMDnTvvWgdFDH9E=",
+      "requires": {
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+        "decamelize": "^1.0.0",
+        "window-size": "0.1.0"
+      }
+    }
+  }
+}

package.json

@@ -0,0 +1,17 @@
+{
+  "name": "quiz-tftb",
+  "version": "0.0.0",
+  "private": true,
+  "scripts": {
+    "start": "node ./bin/www"
+  },
+  "dependencies": {
+    "cookie-parser": "~1.4.4",
+    "debug": "~2.6.9",
+    "express": "~4.16.1",
+    "http-errors": "~1.6.3",
+    "jade": "~1.11.0",
+    "morgan": "~1.9.1",
+    "socket.io": "^4.3.1"
+  }
+}

public/stylesheets/style.css

@@ -0,0 +1,8 @@
+body {
+  padding: 50px;
+  font: 14px "Lucida Grande", Helvetica, Arial, sans-serif;
+}
+
+a {
+  color: #00B7FF;
+}

routes/index.js

@@ -0,0 +1,9 @@
+var express = require('express');
+var router = express.Router();
+
+/* GET home page. */
+router.get('/', function(req, res, next) {
+  res.render('index', { title: 'Express' });
+});
+
+module.exports = router;

routes/users.js

@@ -0,0 +1,9 @@
+var express = require('express');
+var router = express.Router();
+
+/* GET users listing. */
+router.get('/', function(req, res, next) {
+  res.send('respond with a resource');
+});
+
+module.exports = router;

socketsrv.js

@@ -0,0 +1,28 @@
+const io = require( "socket.io" )();
+const socketsrv = {
+    io: io
+};
+let usersCount = 0;
+
+// Add your socket.io logic here!
+io.on( "connection", function( socket ) {
+    usersCount++;
+    io.emit('users_update', { users: usersCount });
+    console.log( "User connected. All users: "+usersCount, action: 'added' );
+
+    socket.on('push', () => {
+        usersCount--;
+        io.emit('users_update', { users: usersCount, action: 'removed' });
+        console.log( `User connected. Users left: ${usersCount}` );
+    });
+
+    socket.on('disconnect', () => {
+        usersCount--;
+        io.emit('users_update', { users: usersCount, action: 'removed' });
+        console.log( `User connected. Users left: ${usersCount}` );
+    });
+
+});
+// end of socket.io logic
+
+module.exports = socketsrv;

views/error.jade

@@ -0,0 +1,6 @@
+extends layout
+
+block content
+  h1= message
+  h2= error.status
+  pre #{error.stack}

views/index.jade

@@ -0,0 +1,5 @@
+extends layout
+
+block content
+  h1= title
+  p Welcome to #{title}

views/layout.jade

@@ -0,0 +1,16 @@
+doctype html
+html
+  head
+    title= title
+    link(rel='stylesheet', href='/stylesheets/style.css')
+    script(src='/socket.io/socket.io.js')
+    script.
+      var socket = io();
+      socket.on('users_update', function(msg) {
+        console.log(msg);
+      });
+
+      // socket.emit('chat message', input.value);
+      
+  body
+    block content