app.js

require('dotenv').config()
var express     = require("express"),
    app         = express(),
    bodyParser  = require("body-parser"),
    mongoose    = require("mongoose"),
    flash       =require("connect-flash"),
    passport    = require("passport"),
    LocalStrategy = require("passport-local"),
    methodOverride = require("method-override"),
    Campground  = require("./models/campground"),
    Comment     = require("./models/comment"),
    User        = require("./models/user"),
    seedDB      = require("./seeds");
     
    
    //requring routes
var commentRoutes    = require("./routes/comments"),
    campgroundRoutes = require("./routes/campgrounds"),
    indexRoutes      = require("./routes/index");
var url=process.env.DATABASEURL || "mongodb://localhost:27017/YelpCamp";
mongoose.connect(url,{useNewUrlParser: 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();
const port=process.env.PORT||3000;
// PASSPORT CONFIGURATION
app.use(require("express-session")({
    secret: "Once again Rusty wins cutest dog!",
    resave: false,
    saveUninitialized: false
}));
app.locals.moment=require('moment');
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("/campgrounds", campgroundRoutes);
app.use("/campgrounds/:id/comments", commentRoutes);
app.listen(port, process.env.IP, function(){
   console.log("The YelpCamp Server Has Started!");
});