app.js

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

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


mongoose.connect("mongodb://localhost/yelp_camp_v10",  { useNewUrlParser: true, useUnifiedTopology: true });
app.use(bodyParser.urlencoded({extended:true}));
app.set("view engine", "ejs");
app.use(express.static(__dirname+"/public"));
app.use(methodOverride("_method"));
app.use(flash());

// seedDB(); //Remove and add campgrounds and comment at the start of the server(seed the database)

//PASSPORT CONFIGURATION
app.use(require("express-session")({
    secret:"Secret",
    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){    //A middleware that will run for every single route
    res.locals.currentUser= req.user;
    res.locals.error= req.flash("error");
    res.locals.success= req.flash("success");
    next();
});

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


app.listen(5000, function(){
    console.log("Yelpcamp has started!!");
});