app.js

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

//Mongodb Atlas password: d3wNXdW37mOKKdi3
//Mongodb url: mongodb+srv://our-first-user:<password>@cluster0.wfgl3.mongodb.net/myFirstDatabase?retryWrites=true&w=majority


const express = require('express');
const mongoose = require('mongoose');
const path = require('path');
const methodOverride = require('method-override');
const ejsMate = require('ejs-mate');
const ExpressError = require('./utils/ExpressError');
const session = require('express-session');
const flash = require('connect-flash');
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 MongoStore = require('connect-mongo').default; //store the session in MongoDb isntead of the default memory

const app = express();

const dbUrl = process.env.DB_URL || "mongodb://localhost:27017/yelp-camp";
// add express sesison:
const secret = process.env.SECRET || 'thisshouldbeabettersecret';

const store = MongoStore.create({
    mongoUrl: dbUrl,
    secret,
    touchAfter: 24 * 60 * 60
})

store.on("error", function (e) {
    console.log("SESSION STORE ERROR", e);
})
const sessionConfig = {
    store,
    name: 'session',
    secret,
    resave: false,
    saveUninitialized: true,
    cookie: {
        httpOnly: true,
        //secure: true,
        expires: Date.now() + 1000 * 60 * 60 * 24 * 7,
        maxAge: 1000 * 60 * 60 * 24 * 7
    }
}
// session
app.use(session(sessionConfig));

// helmet.js:
app.use(helmet());
const scriptSrcUrls = [
    "https://stackpath.bootstrapcdn.com",
    "https://api.tiles.mapbox.com",
    "https://api.mapbox.com",
    "https://kit.fontawesome.com",
    "https://cdnjs.cloudflare.com",
    "https://code.jquery.com",
    "https://cdn.jsdelivr.net",
];
const styleSrcUrls = [
    "https://kit-free.fontawesome.com",
    "https://stackpath.bootstrapcdn.com",
    "https://maxcdn.bootstrapcdn.com",
    "https://api.mapbox.com",
    "https://api.tiles.mapbox.com",
    "https://fonts.googleapis.com",
    "https://use.fontawesome.com",
];
const connectSrcUrls = [
    "https://api.mapbox.com",
    "https://*.tiles.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:"],
            childSrc: ["blob:"],
            objectSrc: [],
            imgSrc: [
                "'self'",
                "blob:",
                "data:",
                "https://res.cloudinary.com/dwuo25yqj/", //SHOULD MATCH YOUR CLOUDINARY ACCOUNT! 
                "https://images.unsplash.com",
            ],
            fontSrc: ["'self'", ...fontSrcUrls],
        },
    })
);

// monggose sanitize:
app.use(mongoSanitize());

// adding passport related middleware: (make sure to put this after app.use(session))
app.use(passport.initialize());
app.use(passport.session());
passport.use(new localStrategy(User.authenticate()));
passport.serializeUser(User.serializeUser());
passport.deserializeUser(User.deserializeUser());

// add flash
app.use(flash());
// flash middleware
app.use((req, res, next) => {
    res.locals.currentUser = req.user;
    res.locals.success = req.flash('success');
    res.locals.error = req.flash('error');
    //console.log(success);
    next();
})

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

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

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

// middleware:
app.use(express.urlencoded({ extended: true }));// use this to parse body content
//const { urlencoded } = require('express');
//const { get } = require('http');
app.use(methodOverride('_method'));
app.use(express.static(path.join(__dirname, 'public'))) // using the public directory

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

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


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

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

// General Error middleware
app.use((err, req, res, next) => {
    const { statusCode = 500 } = err;
    if (!err.message) { err.message = 'Something went wrong' };
    res.status(statusCode).render('error', { err });
});

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