app.js

var express               = require("express");
var app                   = express();
var bodyParser            = require("body-parser");
var mongoose              = require("mongoose");
var passport              = require("passport");
var LocalStrategy         = require("passport-local");
var methodOverride        = require("method-override");
var User                  = require("./models/user");
var flash                 = require("connect-flash");

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



// App CONFIG
//seedDB(); //seed the database
mongoose.connect("mongodb://localhost:27017/yelp_camp_v3",{useNewUrlParser: true});
app.use(express.static(__dirname + "/public"));
app.use(bodyParser.urlencoded({extended: true}));
app.set("view engine", "ejs");
app.use(methodOverride("_method"));

//Passport CONFIG
app.use(require("express-session")({
    secret:"welcome to YelpCamp",
    resave: false,
    saveUninitialized: false
}));
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.error = req.flash("error");
    res.locals.success = req.flash("success");
    next();
});

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

app.listen(process.env.PORT, process.env.IP, function(){
   console.log("Yelp server is on!");
});