app.js

var express = require('express'),
    app = express(),
    mongoose = require('mongoose'),
    bodyParser = require('body-parser'),
    passport = require('passport'),
    LocalStrategy = require('passport-local'),
    methodOverride = require('method-override'),
    Key = require('./models/keys'),
    Comment = require('./models/comments'),
    User = require('./models/users'),
    methodOverride = require('method-override'),
    flash = require('connect-flash')

var sitemap = require('express-sitemap')()

const env = require('env2')('env.json');

var commentRoutes = require('./routes/comments'),
    keysRoutes = require('./routes/keys'),
    indexRoutes = require('./routes/index');

mongoose.promise = global.Promise;

var url = process.env.DATABASEURL;

mongoose.connect(url);


app.set('view engine', 'ejs');
app.use(express.static(__dirname + '/public'));
app.use(bodyParser.urlencoded({
    extended: true
}));
app.use(methodOverride('_method'));

app.use(require('express-session')({
    secret: 'Keys to teach session',
    resave: false,
    saveUninitialized: false
}));
app.use(express.static('sitemap'));

app.get('/robots.txt', function (req, res) {
    res.type('text/plain');
    res.send("User-agent: *\nDisallow: /admin\nDisallow: /public/*\nSitemap: http://www.keystoteach.com/sitemap.xml");
});

app.use(flash());

app.use(passport.initialize());
app.use(passport.session());
passport.use(new LocalStrategy(User.authenticate()));
passport.serializeUser(User.serializeUser());
passport.deserializeUser(User.deserializeUser());

app.use(function(req, res, next) {
    res.locals.currentUser = req.user;
    res.locals.allTags = req.allTags;
    res.locals.error = req.flash('error');
    res.locals.success = req.flash('success');
    next();
});

app.use(indexRoutes);
app.use('/keys', keysRoutes);
app.use('/keys/:id/comments', commentRoutes);


app.use(function(req, res, next) {
    res.locals.error = req.flash('error');
    res.locals.success = req.flash('success');
    next();
});

var indexRoutes = require('./routes/index')
app.use('/', indexRoutes);

sitemap.generate(app);

var PORT = 8080;
app.listen(process.env.PORT || PORT, process.env.IP, function() {
    console.log('Keys to Learn server started');
})