server.js

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

console.log(process.env.NODE_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'));
app.use('/register', require('./routes/registerRoutes'));
app.use('/auth', require('./routes/authRoutes'));
app.use('/books', require('./routes/bookRoutes'));

// protect all routes below. (JWTs)
app.use('/users', require('./routes/userRoutes'));

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}`);
});