app.js

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 exphbs = require('express-handlebars');
var session = require('express-session');
var passport = require('passport');
var passportLocal = require('passport-local');
var csrf = require('csurf');
var routes = require('./routes/index');
var users = require('./routes/users');
var registrations = require('./routes/registrations.js');
var schedules = require('./routes/schedules.js');
var hbsHelpers = require('./javascripts/hbsHelpers.js');
var Schedule = require('./models/schedule.js');
var Enum = require('./models/enum.js');
var User = require('./models/user.js');

// database setup
var mongoose = require('mongoose');
mongoose.connect(process.env.MONGODB_URI || 'mongodb://localhost/paxpopulidb');
var db = mongoose.connection;
db.on('error', console.error.bind(console, 'connection error:'));
db.once('open', function (callback) {
    console.log("database connected");
});

var app = express();


// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.engine('.hbs', exphbs({extname: '.hbs',
                           defaultLayout: 'index',
                           helpers: {toLowerCase: hbsHelpers.lowerCase,
                                     isRegularUser: hbsHelpers.isRegularUser,
                                      isAdministrator: hbsHelpers.isAdministrator,
                                      isCoordinator: hbsHelpers.isCoordinator,
                                      isStudent: hbsHelpers.isStudent,
                                      isTutor: hbsHelpers.isTutor,
                                      ifNot: hbsHelpers.ifNot,
                                      formatDate: hbsHelpers.formatDate,
                                      equalStrings: hbsHelpers.equalStrings,
                                      summarizeSchedule: hbsHelpers.summarizeSchedule,
                                      formatSchedules: hbsHelpers.formatSchedules,
                                      eachFormatedSchedule: hbsHelpers.eachFormatedSchedule,
                                      eachFormatedTutorSchedule: hbsHelpers.eachFormatedTutorSchedule,
                                      notNotApplicable: hbsHelpers.notNotApplicable}
                          }));
app.set('view engine', 'hbs');

// set up a secret to encrypt cookies
app.use(session({secret : process.env.SECRET || 'PaxPopuliScheduler',
                 resave : true,
                 saveUninitialized : true }));
app.use(passport.initialize());
app.use(passport.session());

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use(function (req, res, next) {
    // stores env so it is accessible in other routes
    req.devMode = app.get('env') === 'development';
    next();
});


// setup csurf middlewares 
var csrfProtection = csrf({ cookie: true });
var parseForm = bodyParser.urlencoded({ extended: false });

// parse cookies since "cookie" is true in csrfProtection 
app.use(cookieParser());
app.use(csrfProtection);


//ROUTES (needs to stay below the csurf code)
app.use('/', routes);
app.use('/users', users);
app.use('/registrations', registrations);
app.use('/schedules', schedules);


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


// lauch the job of running matching algorithm every week
Schedule.automateMatch();
// initialize enums
Enum.initialize(function (err, enums) {
    if (err) {
        console.log(err.message);
    } else {
    	console.log('ensured that enums exist');
        global.enums = enums;
    }
});
// initialize super admin for Bob
User.initializeSuperAdmin(function (err, superAdmin) {
    if (err) {
        console.log(err.message);
    } else {
        console.log('ensured that super admin account exist');
    }
});

// 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: 'An error has occurred. Please refresh the page',
    error: {}
  });
});

module.exports = app; //keep at bottom of the file