server.js

require("dotenv").config();
var express = require("express");
var exphbs = require("express-handlebars");
// user password
var bodyParser = require('body-parser');
var cookieParser = require('cookie-parser');
var session = require('express-session');
var morgan = require('morgan');
var User = require('./models/user');
//
var db = require("./models");

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

// Middleware
//// user password
// set morgan to log info about our requests for development use.
app.use(morgan('dev'));

// initialize body-parser to parse incoming parameters requests to req.body
app.use(bodyParser.urlencoded({ extended: true }));

// initialize cookie-parser to allow us access the cookies stored in the browser.
app.use(cookieParser());

// initialize express-session to allow us track the logged-in user across sessions.
app.use(session({
    key: 'user_sid',
    secret: 'somerandonstuffs',
    resave: false,
    saveUninitialized: false,
    cookie: {
        expires: 600000
    }
}));


// This middleware will check if user's cookie is still saved in browser and user is not set, then automatically log the user out.
// This usually happens when you stop your express server after login, your cookie still remains saved in the browser.
app.use((req, res, next) => {
    if (req.cookies.user_sid && !req.session.user) {
        res.clearCookie('user_sid');
    }
    next();
});


// middleware function to check for logged-in users
var sessionChecker = (req, res, next) => {
    if (req.session.user && req.cookies.user_sid) {
        res.redirect('/dashboard');
    } else {
        next();
    }
};
// ////////////////////////////////////
app.use(express.urlencoded({ extended: false }));
app.use(express.json());
app.use(express.static("public"));

// Handlebars
const hbs = exphbs.create({
  defaultLayout: 'main',

  // Helper functions
  helpers: {
    checkStatus: function (property) {
      switch(property) {
      case "Completed":
        return "bg-success";
      case "Pending":
        return "bg-warning";
      case "Canceled":
        return "bg-danger";
      }
    },
    phoneFormatter: function (number) {
      return `(${number.slice(0,3)})${number.slice(4,)}`;
    },
    priceFormatter: function (number) {
            return `$ ${number}`;
    }
  }
});

app.engine(
  "handlebars", hbs.engine);
app.set("view engine", "handlebars");

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

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;
}

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

module.exports = app;