app.js

if(process.env.NODE_ENV !== "production"){
    require('dotenv').config();
}

const express = require('express');
const app = express();
const path = require('path');
const ejsMate = require('ejs-mate');
const methodOverride = require('method-override');
const session = require('express-session');
const flash = require('connect-flash');
const ExpressError = require('./utils/ExpressError');
const mongoose = require('mongoose');

const mongoSanitize = require('express-mongo-sanitize');

const passport = require('passport');
const LocalStrategy = require('passport-local');
const User = require('./models/user')

const campgroundRoutes = require('./routes/campgrounds');
const reviewRoutes = require('./routes/reviews');
const userRoutes = require('./routes/users');

const MongoDBStore = require('connect-mongo');

const dbUrl =  process.env.DB_URL || 'mongodb://localhost:27017/happy-hikers';

mongoose.connect(dbUrl,{
    useNewUrlParser: true,
    useUnifiedTopology: true,
    useCreateIndex: true,
    useFindAndModify: false
});

const db = mongoose.connection;
db.on("error", console.error.bind(console, "connection error:"));
db.once("open", () => {
    console.log("Database connected");
})

app.engine('ejs',ejsMate);
app.set('view engine','ejs');
app.set('views',path.join(__dirname,'views'));

app.use(methodOverride('_method'));
app.use(express.urlencoded({ extended: true }));
app.use(express.json());
app.use(express.static(path.join(__dirname, 'public')));
app.use(mongoSanitize());

const secret = process.env.SECRET || 'thisismysecret';

app.use(session({
    name : 'session',
    secret : secret,
    resave : false,
    saveUninitialized : true,
    cookie : {
        expires : Date.now() + 1000*60*60*24*7,
        maxAge : 1000*60*60*24*7,
        httpOnly : true,
        // secure : true
    },
    store : MongoDBStore.create({
        mongoUrl : dbUrl,
        touchAfter : 24*60*60
    })
}))
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((req,res,next) => {
    if(!['/login','/','/register'].includes(req.originalUrl)){
        req.session.returnTo = req.originalUrl;
    }
    res.locals.currentUser = req.user;
    res.locals.success = req.flash('success');
    res.locals.error = req.flash('error');
    next();
})

app.use('/',userRoutes);   
app.use('/campgrounds', campgroundRoutes);
app.use('/campgrounds/:id/reviews',reviewRoutes);
 

app.get('/', (req,res) => {
    res.render('home.ejs');
})

app.all('*', (req, res, next) => {
    next(new ExpressError('Page not Found!!', 404))
})

app.use((err, req, res, next) => {
    const { statusCode = 500 } = err;
    if (!err.message) err.message = 'Oh No, Something Went Wrong!'
    res.status(statusCode).render('error.ejs', { err })
})

const port = process.env.PORT || 3000;
app.listen(port, () => {
    console.log(`Serving on Port ${port}`);
})