app.js

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



const express = require('express');
const ejsMate = require('ejs-mate');
const path = require('path');
const session = require('express-session');
const flash = require('connect-flash');
const mongoose = require('mongoose');
const ExpressError = require('./utils/ExpressError');
const methodOverride = require('method-override');
const passport = require('passport');
const LocalStrategy = require('passport-local');
const User = require('./models/user');
const mongoSanitize = require('express-mongo-sanitize');
const helmet = require('helmet');
const MongoDBStore = require('connect-mongo')(session);


const campgroundRoutes = require('./routes/campgrounds');
const reviewRoutes = require('./routes/reviews');
const userRoutes = require('./routes/users');
const dbUrl = process.env.DB_URL || 'mongodb://localhost:27017/yelp-camp';

main().catch(err => console.log(err));
// 'mongodb://localhost:27017/yelp-camp'
async function main() {
  await mongoose.connect(dbUrl, {
    useNewUrlParser: true,
    useUnifiedTopology: true,
    });
    console.log('Database connected')
};

const app = express();

app.engine('ejs', ejsMate)
app.set('view engine', 'ejs');
app.set('views', path.join(__dirname, 'views'));
app.use(express.urlencoded({extended: true}));
app.use(methodOverride('_method'));
app.use(mongoSanitize());



app.use(express.static(path.join(__dirname, 'public')));

const secret = process.env.SECRET || 'thisshouldbeabettersecret!';

const store = new MongoDBStore({
    url: dbUrl,
    secret,
    touchAfter: 24 * 60 * 60
});
store.on('error', function(e){
    console.log('Session store error', e);
});

const sessionConfig = {
    store,
    name: 'sessionYelp',
    secret,
    resave: false,
    saveUninitialized: true,
    cookie: {
        httpOnly: true,
        expires: Date.now() + 1000 * 60 * 60 * 24 * 7,
        maxAge: 1000 * 60 * 60 * 24 * 7
    }
}
app.use(session(sessionConfig));
app.use(flash());



const scriptSrcUrls = [
    "https://stackpath.bootstrapcdn.com/",
    "https://api.tiles.mapbox.com/",
    "https://api.mapbox.com/",
    "https://kit.fontawesome.com/",
    "https://cdnjs.cloudflare.com/",
    "https://cdn.jsdelivr.net/",
    "https://res.cloudinary.com/olegsyng/"
];
const styleSrcUrls = [
    "https://kit-free.fontawesome.com/",
    "https://stackpath.bootstrapcdn.com/",
    "https://api.mapbox.com/",
    "https://api.tiles.mapbox.com/",
    "https://fonts.googleapis.com/",
    "https://use.fontawesome.com/",
    "https://cdn.jsdelivr.net/",
    "https://res.cloudinary.com/olegsyng/"
];
const connectSrcUrls = [
    "https://*.tiles.mapbox.com",
    "https://api.mapbox.com",
    "https://events.mapbox.com",
    "https://res.cloudinary.com/olegsyng/"
];
const fontSrcUrls = [ "https://res.cloudinary.com/olegsyng/" ];
 
app.use(
    helmet({
        contentSecurityPolicy: {
            directives : {
                defaultSrc : [],
                connectSrc : [ "'self'", ...connectSrcUrls ],
                scriptSrc  : [ "'unsafe-inline'", "'self'", ...scriptSrcUrls ],
                styleSrc   : [ "'self'", "'unsafe-inline'", ...styleSrcUrls ],
                workerSrc  : [ "'self'", "blob:" ],
                objectSrc  : [],
                imgSrc     : [
                    "'self'",
                    "blob:",
                    "data:",
                    "https://res.cloudinary.com/olegsyng/", //SHOULD MATCH YOUR CLOUDINARY ACCOUNT!
                    "https://images.unsplash.com/"
                ],
                fontSrc    : [ "'self'", ...fontSrcUrls ],
                mediaSrc   : [ "https://res.cloudinary.com/dlzez5yga/" ],
                childSrc   : [ "blob:" ]
            }
        },
        crossOriginEmbedderPolicy: 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((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')
});

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', {err})
})

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