server.js

//dependancies
const express = require("express");
const app = express();
const path = require("path");
const exphbs = require("express-handlebars");
let mongoose = require("mongoose");
const clientSessions = require("client-sessions");

//controllers
const productController = require("./controller/productController.js");
const userController = require("./controller/userController.js");
const cartController = require("./controller/cartController.js");
const pathController = require("./controller/pathwayController.js");
const chatController = require("./controller/chatController.js");

//------------------------------------------------------------------------------
//to be removed later if not being used
app.engine(
  ".hbs",
  exphbs.engine({
    extname: ".hbs",
    helpers: {
        ifeq: function(a, b, options) {
            if (a == b) { return options.fn(this); }
        },
        ifmore: function(a, b, options) {
            if (a > b) { return options.fn(this); }
        },
        navLink: function(url, options){
            return '<li' + 
                ((url == app.locals.activeRoute) ? ' class="active" ' : '') + 
                '><a href="' + url + '">' + options.fn(this) + '</a></li>';
        },
        safeHTML: function(context){
            return stripJs(context);
        },
        formatDate: function(dateObj){
            let year = dateObj.getFullYear();
            let month = (dateObj.getMonth() + 1).toString();
            let day = dateObj.getDate().toString();
            return `${year}-${month.padStart(2, '0')}-${day.padStart(2,'0')}`;
        },
        ini: function(a, options){
            return a[0].toUpperCase();
        },
        discount: function(price, discount){
            return price - (price * (discount/100));
        },
        displayCart: function(cartName, cartID, options){
            if (cartName) return cartName
            else {
                console.log(typeof(cartID) + " + " + cartID)
                return cartID
                return cartID.substr(1, cartID.length)
            }
        },
        calcTotal: function(Products, discount){
            total = 0
            console.log(Products);
            if(Products && Products.length !== 0){
            Products.forEach(product => {
                total += product.price * product.quantity
            })
        }
            return total - (discount/100) * total
        }
      },
      ifmore: function (a, b, options) {
        if (a > b) {
          return options.fn(this);
        }
      },
      navLink: function (url, options) {
        return (
          "<li" +
          (url == app.locals.activeRoute ? ' class="active" ' : "") +
          '><a href="' +
          url +
          '">' +
          options.fn(this) +
          "</a></li>"
        );
      },
      safeHTML: function (context) {
        return stripJs(context);
      },
      formatDate: function (dateObj) {
        let year = dateObj.getFullYear();
        let month = (dateObj.getMonth() + 1).toString();
        let day = dateObj.getDate().toString();
        return `${year}-${month.padStart(2, "0")}-${day.padStart(2, "0")}`;
      },
      ini: function (a, options) {
        return a[0].toUpperCase();
      },
    //   discount: function (price, discount) {
    //     return price - price * (discount / 100);
    //   },
      displayCart: function (cartName, cartID, options) {
        if (cartName) return cartName;
        else {
          console.log(typeof cartID + " + " + cartID);
          return cartID;
          return cartID.substr(1, cartID.length);
        }
      },
      calcTotal: function (Products, discount) {
        total = 0
        if (Products) {
          Products.forEach((product) => {
            total += product.price * product.quantity;
          });
        }
        return total - discount * total;
      },
    }
  )
);
app.set("view engine", ".hbs");
app.set("layout", "main");

//express configurations
app.use(express.urlencoded({ extended: false }));

app.use(express.static(path.join(__dirname, "/public")));

app.use(
  clientSessions({
    cookieName: "session",
    secret: "ThisIsaSuperLongSecretKeyWithNumbers1234567890!@#$%^&*()",
    duration: 60 * 60 * 1000 * 24 * 7, // 1 week
    activeDuration: 1000 * 60 * 60 * 24  // 1 day
}));

app.use(function(req,res,next) {
    //res.locals.userExists = req.session.user.userName;
    res.locals.session = req.session;
    next();
})

//-routes-------------------------------------------------------------------

const HTTP_PORT = process.env.PORT || 8080;

function onHttpStart() {
  console.log("Express http server listening on: " + HTTP_PORT);
}

app.use("/", userController);
app.use("/product", productController);
app.use("/cart", cartController);
app.use("/pathway", pathController);
app.use("/chat", chatController);

app.get("/", (req, res) => {
  res.render("home", { layout: "main" });
});

app.get("/noaccess", (req, res) => {
  res.render("noaccess", {
    layout: "main",
  });
});

// for the pages that do not exist
app.use((req, res) => {
  res.render("404", {
    layout: "main",
  });
});

mongoose
  .connect(process.env.MONGO_CONNECTION_STRING, {
    useNewUrlParser: true,
    useUnifiedTopology: true,
  })
  .then(() => {
    app.listen(HTTP_PORT, onHttpStart);
  })
  .catch(() => {
    console.log("Error while connection to mongoDB");
  });