server.js

const dotenv = require('dotenv');
const express = require('express');
const app = express();
const path = require('path');
const {logger} = require('./middleware/logger');
const errorHandler = require('./middleware/errorHandler');
const cookieParser = require('cookie-parser');
const cors = require('cors');
const connectDB = require('./config/dbConn');
const corsOptions = require('./config/corsOptions');
const mongoose = require('mongoose');
const { logEvents } = require('./middleware/logger')
const PORT = process.env.PORT || 3500;

dotenv.config({ path: '.env' });

connectDB();

app.use(logger);

app.use(cors(corsOptions));

app.use(express.json());

app.use(cookieParser());

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

app.use('/', require('./routes/root'));

// Redirect Misconfigured Requests
app.all('*', (req, res) => {
    res.status(404)
    if (req.accepts('html')) {
        res.sendFile(path.join(__dirname, 'views', '404.html'))
    } else if (req.accepts('json')) {
        res.json({
            message: '404 Not Found'
        })
    } else {
        res.type('txt').send('404 Not Found')
    }
});

app.use(errorHandler);

mongoose.connection.once('open', () => {
    console.log('Connected to MongoDB');
    app.listen(PORT, () => console.log(`Server running on port ${PORT}`));
});

mongoose.connection.on('error', err => {
    console.log(err);
    logEvents(`${err.no}: ${err.code}\t${err.syscall}\t${err.hostname}`, 'mongoErrLog.log')
});