app.js

var express         = require("express"),
    app             = express(),
    bodyParser      = require("body-parser"),
    mongoose        = require("mongoose"),
    Campground      = require("./models/campground"),
    seedDB          = require("./seeds"),
    methodOverride  = require("method-override"),
    Comment         = require("./models/comment"),
    LocalStrategy   = require("passport-local"),
    User            = require("./models/user"),
    passport        = require("passport");

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

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

//   {name: "Ghost Valley", image: "https://source.unsplash.com/K9olx8OF36A", description: "Beautiful site perched on top of Ghost Valley. No Bathrooms. No water"}

//PASPORT CONFIGURATION
app.use(require("express-session")({
    secret: "Cats are better than dogs",
    resave: false,
    saveUninitialized: false
}));
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;
    next();
})


app.use("/", authRoutes);
app.use("/campgrounds/:id/comments", commentRoutes);
app.use("/campgrounds", campgroundRoutes);

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