server.js

require("dotenv").config();
var express = require("express");
var exphbs = require("express-handlebars");
var session = require("express-session");

var db = require("./models");

var app = express();
var PORT = process.env.PORT || 3000;

// Socket.IO for realtime db updates
var server = require("http").Server(app);
var io = require("socket.io")(server);

// Middleware
var bodyParser = require("body-parser");
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(express.static("public"));

// Sessions
app.use(
  session({
    secret: "secret",
    resave: true,
    saveUninitialized: true
  })
);

// Handlebars
app.engine(
  "handlebars",
  exphbs({
    defaultLayout: "main"
  })
);
app.set("view engine", "handlebars");

// Routes
require("./routes/apiRoutes")(app, io);
require("./routes/htmlRoutes")(app, io);

var syncOptions = { force: false };

// If running a test, set syncOptions.force to true
// clearing the `testdb`
if (process.env.NODE_ENV === "test") {
  syncOptions.force = true;
}

// start connection for socket IO
io.on("connection", function () {
  console.log("a user is connected");
});

// Starting the server, syncing our models ------------------------------------/
db.sequelize.sync(syncOptions).then(function () {
  server.listen(PORT, function () {
    console.log(
      "==> 🌎  Listening on port %s. Visit http://localhost:%s/ in your browser.",
      PORT,
      PORT
    );
  });
});

module.exports = app;