app.js

//If not set to production uses .env
if (process.env.NODE_ENV !== "production") {
    require('dotenv').config();
}

const express = require('express');
const path = require('path');
const mongoose = require('mongoose');
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 passport = require('passport');
const LocalStrategy = require('passport-local');
const User = require('./models/user');
const mongoSanitize = require('express-mongo-sanitize');
const helmet = require('helmet');

const userRoutes = require('./routes/users');
const gameRoutes = require('./routes/games');
const MongoStore = require('connect-mongo');

//Connection to db
const dbUrl = process.env.DB_URL;
// const dbUrl = 'mongodb://localhost:27017/golf-tracker';

mongoose.connect(dbUrl);

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

module.exports = db;

//Setting up express
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());
app.use(helmet());

//Trusting content from urls
const scriptSrcUrls = [
    "https://stackpath.bootstrapcdn.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://fonts.googleapis.com/",
    "https://use.fontawesome.com/",
    "https://cdn.jsdelivr.net/",
];
const connectSrcUrls = [
    "https://api.mapbox.com/",
    "https://a.tiles.mapbox.com/",
    "https://b.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:"],
            objectSrc: [],
            imgSrc: [
                "'self'",
                "blob:",
                "data:",
                "https://images.unsplash.com/",
                "data:"
            ],
            fontSrc: ["'self'", ...fontSrcUrls],
        },
    })
);

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

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

//Set up session
const sessionConfig = {
    store,
    name: 'session',
    secret: 'thisshouldbeabettersecret',
    resave: false,
    saveUninitialized: true,
    cookie: {
        httpOnly: true,
        // secure: true,
        expires: Date.now() + 1000 * 60 * 60 * 24 * 7,
        maxAge: 1000 * 60 * 60 * 24 * 7
    }
}

app.use(session(sessionConfig));
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) => {
    res.locals.currentUser = req.user;
    res.locals.success = req.flash('success');
    res.locals.error = req.flash('error');
    next();
})

app.use('/games', gameRoutes);
app.use('/', userRoutes);

// Setting up routes
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 });
})

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