app.js

require('dotenv').config();

const compression = require('compression');
const createError = require('http-errors');
const express = require('express');
const path = require('path');
const cookieParser = require('cookie-parser');
const logger = require('morgan');
const mongoose = require('mongoose');
const hbs = require('hbs');
const session = require('express-session');
const MongoStore = require('connect-mongo');
const flash = require('connect-flash');

const indexRouter = require('./routes/index');
const adminRouter = require('./routes/admin');

const app = express();

// user authentication setup
const { auth } = require('express-openid-connect');
const config = {
    authRequired: false,
    auth0Logout: true,
    secret: process.env.AUTH0_SECRET,
    baseURL: process.env.AUTH0_BASE_URL,
    clientID: process.env.AUTH0_CLIENT_ID,
    issuerBaseURL: process.env.AUTH0_ISSUER_BASE_URL,
};

// db setup
mongoose
    .connect(process.env.MONGODB_URI)
    .catch((err) => console.log('error connecting to MongoDB', err));

// session setup
app.use(session({
    secret: process.env.SESSION_SECRET,
    store: MongoStore.create({ mongoUrl: process.env.MONGODB_URI }),
    resave: false,
    saveUninitialized: false
}));

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'hbs');
hbs.registerPartials(__dirname + '/views/partials/');

app.use(compression());
app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
// auth router attaches /login, /logout and /callback routes to the baseURL
app.use(auth(config));
app.use(flash());

app.use('/', indexRouter);
app.use('/admin', adminRouter);

// catch 404 and forward to error handler
app.use(function (req, res, next) {
    next(createError(404));
});

// error handler
app.use(function (err, req, res, next) {
    // set locals, only providing error in development
    res.locals.message = err.message;
    res.locals.error = req.app.get('env') === 'development' ? err : {};

    // render the error page
    res.status(err.status || 500);
    console.log(err);
    res.render('error', {userName: req.oidc.user.name, userEmail: req.oidc.user.email});
});

module.exports = app;