app.js

// dependencies
var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var mongoose = require('mongoose');
var passport = require('passport');
var Promise = require("bluebird");
var LocalStrategy = require('passport-local').Strategy;
var flash = require('connect-flash');

var admin = require('./routes/admin');
var posts = require('./routes/posts');
var routes = require('./routes/index');
var authentication = require('./routes/authentication');
var lessons = require('./routes/lessons');
var quizzes = require('./routes/quizzes');

// Use bluebird promise library
mongoose.Promise = require('bluebird');

var app = express();

// Configuration ===========================================

// Config files
var db = require('./config/db');

// View engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'pug');

// Add HTTP request logging
app.use(logger('dev'));

app.use(favicon(__dirname + '/public/favicon.ico'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(require('express-session')({
    secret: 'keyboard cat',
    resave: false,
    saveUninitialized: false
}));
app.use(passport.initialize());
app.use(flash());
app.use(passport.session());
app.use(express.static(path.join(__dirname, 'public')));

// API endpoints and web page routes
// app.use('/', admin);
app.use('/', posts);
app.use('/', routes);
// app.use('/', authentication);
// app.use('/', lessons);
// app.use('/', quizzes);

// passport config
var Account = require('./models/account');
passport.use(new LocalStrategy(Account.authenticate()));
passport.serializeUser(Account.serializeUser());
passport.deserializeUser(Account.deserializeUser());

// Connect to our mongoDB database
mongoose.connect(db.url, {
  useNewUrlParser: true,
  useUnifiedTopology: true
});

mongoose.connection.on('connected', function() {
  console.log('Mongoose connected to ' + db.url);
});
mongoose.connection.on('error', function(err) {
  console.log('Mongoose connection error: ' + err);
});
mongoose.connection.on('disconnected', function() {
  console.log('Mongoose disconnected');
});

// catch 404 and forward to error handler
app.use(function(req, res, next) {
    var err = new Error('Not Found');
    err.status = 404;
    next(err);
});

// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
    app.use(function(err, req, res, next) {
        res.status(err.status || 500);
        res.render('error', {
            message: err.message,
            error: err
        });
    });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
        message: err.message,
        error: {}
    });
});


module.exports = app;