app.js

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

const express = require('express');
const path = require('path');
const mongoose = require('mongoose');
mongoose.set('strictQuery', true);

const ejsMate = require('ejs-mate');
const session = require('express-session');
const flash = require('connect-flash');
const ExpressError = require('./utils/ExpressError');
const methodOverride = require('method-override');
const mongoSanitize = require('express-mongo-sanitize');

const User = require('./models/user');
const helmet = require('helmet');

const passport = require('passport');
const LocalStrategy = require('passport-local');

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

const dbUrl = process.env.DB_URL;
// const dbUrl = 'mongodb://localhost:27017/yelp-camp'
mongoose.connect(dbUrl);

const db = mongoose.connection;
db.on("error", console.error.bind(console, "connection error:"));
db.once("open", () => {
    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(express.static(path.join(__dirname, 'public')));
app.use(mongoSanitize());

const store = MongoStore.create({
    mongoUrl: dbUrl,
    touchAfter: 24 * 60 * 60,
    crypto: {
        secret: 'thisshouldbeabettersecret!'
    }
});

store.on("error", function (e) {
    console.log("SESSION STORE ERROR", e)
});

const sessionConfig = {
    store: store,
    name: 'session',
    secret: 'thisshouldbeabettersecret!',
    resave: false,
    saveUninitialized: true,
    cookie: {
        httpOnly: true,
        // secure: true,
        // 1 week time in milli seconds.
        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/",
];
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/",
];
const connectSrcUrls = [
    "https://*.tiles.mapbox.com",
    "https://api.mapbox.com",
    "https://events.mapbox.com",
];
const fontSrcUrls = [];
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/du7cjrksv/", //SHOULD MATCH YOUR CLOUDINARY ACCOUNT!
                "https://images.unsplash.com/"
            ],
            fontSrc    : [ "'self'", ...fontSrcUrls ],
            mediaSrc   : [ "https://res.cloudinary.com/du7cjrksv/" ],
            childSrc   : [ "blob:" ]
        }
    })
);

// session() should be used before passport.session().
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) => {
    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');
});

//If nothing matches above then this route.
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 = "Something went wrong!"
    res.status(statusCode).render('error', { err })
})

app.listen(3000, () => {
    console.log('Serving on port 3000');
})