app.js

const express = require('express');
const mongoose = require('mongoose');
const path = require('path');
const config = require('./config/database');
const bodyParser = require('body-parser');
const session = require('express-session');
const { body } = require('express-validator');
const flash = require('connect-flash');
const expressMessages = require('express-messages');
const Page = require('./models/pages');
const Category = require('./models/category');
const passport=require('passport');


mongoose.connect(config.database);
const db = mongoose.connection;
db.on('error', console.error.bind(console, 'connection error: '));
db.once('open', function () {
  console.log('Connected successfully');
});

const app = express();
app.use(express.json());

app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

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

app.locals.errors=null;

//get page model
Page.find({}).sort({ sorting: 1 }).exec() // Remove the callback function from exec()
    .then(pages => {
          app.locals.pages =pages;
    })
    .catch(err => {
      console.error(err);
      res.status(500).send('Internal Server Error');
    });

//get category model

Category.find({}).exec() // Remove the callback function from exec()
    .then(categories => {
          app.locals.categories =categories;
    })
    .catch(err => {
      console.error(err);
      res.status(500).send('Internal Server Error');
    });

//Middleware body parser
app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());


//set global errors variable 
app.locals.errors = null ;

app.set('trust proxy', 1);
app.use(
  session({
    secret: 'keyboard cat',
    resave: true,
    saveUninitialized: true,
   // cookie: { secure: true },
  })
);

// Express Messages middleware
app.use(require('connect-flash')());
app.use(function (req, res, next) {
  res.locals.messages = expressMessages(req, res);
  next();
});

// Use express-validator middleware
app.use(express.json());
app.use(express.urlencoded({ extended: false }));

app.use((req, res, next) => {
  res.locals.cart = req.session.cart || {};
  res.locals.user = req.user || null;
  next();
});

//Passport Middleware
app.use(passport.initialize());
app.use(function(req, res, next) {
  res.locals.messages = require('express-messages')(req, res);
  next();
});

//Passport Config
require('./config/passport')(passport);
//Passport Middleware
app.use(passport.initialize());
app.use(passport.session());


// Importing routers
const pagesRouter = require('./routes/pages');
const products = require('./routes/products');
const cart = require('./routes/cart');
const users = require('./routes/user');
const adminPagesRouter = require('./routes/admin_pages');
const adminCategories = require('./routes/admin_categories.js');
const adminProducts = require('./routes/admin_products.js');

// Use routers as middleware

app.use('/', pagesRouter);
app.use('/admin/pages', adminPagesRouter);
app.use('/admin/categories',adminCategories);
app.use('/admin/products',adminProducts);
app.use('/client', products);
app.use('/user/cart', cart);
app.use('/user', users);

const port = 3000;
app.listen(port, function () {
  console.log('Server is running on port ' + port);
});