app.js

var express = require("express"),
    app = express(),
    bodyParser = require("body-parser"),
    mongoose = require("mongoose"),
    passport = require("passport"),
    LocalStratergy = require("passport-local"),
    passportLocalMongoose = require("passport-local-mongoose"),
    expressSession = require("express-session"),
    // Models
    Campground = require("./models/campground"),
    Comment = require("./models/comment"),
    User = require("./models/user"),
    seedDB = require("./seed"),
    methodOverride = require("method-override");

var commentRoutes = require("./routes/comments"),
    campgroundRoutes = require("./routes/campgrounds"),
    authRoutes = require("./routes/auth");


mongoose.connect("mongodb://localhost/yelp_camp", { useMongoClient: true });
app.use(bodyParser.urlencoded({ extended: true }));
app.set('view engine', 'ejs');
app.use(express.static('public'));
app.use(methodOverride("_method"));
// seedDB();

app.use(expressSession({
    secret: "I like chicken nuggets",
    resave: false,
    saveUninitialized: false
}));

app.use(passport.initialize());
app.use(passport.session());
passport.use(new LocalStratergy(User.authenticate()));
passport.serializeUser(User.serializeUser());
passport.deserializeUser(User.deserializeUser());
app.use(function(req, res, next) {
    res.locals.user = req.user;
    next();
});

app.use(function(req, res, next) {
    res.locals.user = req.user,
        next();
});

app.use(campgroundRoutes);
app.use(commentRoutes);
app.use(authRoutes);

app.listen(3000, process.env.IP, function() {
    console.log("Server has started");
});