app.js

var createError = require('http-errors');
var express = require('express');
var bodyParser= require('body-parser');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var expressHbs = require('express-handlebars');
var mongoose = require('mongoose');
var session = require('express-session');
var passport = require('passport');
var flash = require('connect-flash');
const validator= require('express-validator');
var MongoStore= require('connect-mongo')(session);
const Handlebars = require('handlebars');
const {allowInsecurePrototypeAccess} = require('@handlebars/allow-prototype-access');

var indexRouter = require('./routes/index');
var userRoutes = require('./routes/user');
var shopRouter =require('./routes/shop');




var app = express();
app.set('port',(process.env.PORT || 5000));

//mongoose.connect('mongodb://localhost:27017/canteen',{useNewUrlParser: true, useUnifiedTopology: true});
mongoose.connect('mongodb://abc:z1y2x3w4@ds123003.mlab.com:23003/heroku_jkr2lql2',{useNewUrlParser: true, useUnifiedTopology: true});
require('./config/passport');

// view engine setup
app.engine('.hbs',expressHbs(
    {
      defaultLayout: 'layout',
      extname: '.hbs',
      handlebars: allowInsecurePrototypeAccess(Handlebars),
        helpers: { // This was missing
            ifCond: function (v1, operator, v2, options) {

                switch (operator) {
                    case '==':
                        return (v1 === v2) ? options.fn(this) : options.inverse(this);
                    case '===':
                        return (v1 === v2) ? options.fn(this) : options.inverse(this);
                    case '!=':
                        return (v1 !== v2) ? options.fn(this) : options.inverse(this);
                    case '!==':
                        return (v1 !== v2) ? options.fn(this) : options.inverse(this);
                    case '<':
                        return (v1 < v2) ? options.fn(this) : options.inverse(this);
                    case '<=':
                        return (v1 <= v2) ? options.fn(this) : options.inverse(this);
                    case '>':
                        return (v1 > v2) ? options.fn(this) : options.inverse(this);
                    case '>=':
                        return (v1 >= v2) ? options.fn(this) : options.inverse(this);
                    case '&&':
                        return (v1 && v2) ? options.fn(this) : options.inverse(this);
                    case '||':
                        return (v1 || v2) ? options.fn(this) : options.inverse(this);
                    default:
                        return options.inverse(this);
                }
            }
        }
    }
));


app.set('view engine', '.hbs');

app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(validator());
app.use(cookieParser());
app.use(session({
  secret: 'mysupersecret',
  resave: false,
  saveUninitialized: false,
  store: new MongoStore({mongooseConnection: mongoose.connection}),
  cookie: {maxAge: 5*60*1000}
}));

app.use(flash());
app.use(passport.initialize());
app.use(passport.session());
app.use(express.static(path.join(__dirname, 'public')));


app.use(function(req, res, next) {
  res.locals.login = req.isAuthenticated();
  res.locals.session = req.session;
  next();
});



app.use('/shop', shopRouter);
app.use('/user',userRoutes);
app.use('/', indexRouter);




// 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');
});

app.listen(app.get('port'),function() {
    console.log('Node app is running');
});





module.exports = app;