server.js

const express = require('express');
const app = express();
const path = require('path');
const PORT = process.env.PORT || 3500;

app.get('^/$|/index(.html)?', (req, res) => {
    /* res.sendFile('./views/index.html', {root: __dirname }); */
    res.sendFile(path.join(__dirname, 'views', 'index.html'));

});
app.get('/new-page(.html)?', (req, res) => {
    /* res.sendFile('./views/index.html', {root: __dirname }); */
    res.sendFile(path.join(__dirname, 'views', 'new-page.html'));
});
app.get('/old-page(.html)?', (req, res) => {
    /* res.sendFile('./views/index.html', {root: __dirname }); */
    res.redirect(301, '/new-page.html');
});

//Route handlers 
app.get('/hello(.html)?', (req, res, next) => {
    console.log('Attempted to load Hello.html');
    next()
}, (req, res) => {
    res.send('Hello World')
});

//chaining route handlers
const one = (req, res, next) => {
    console.log('one');
    next();
}

const two = (req, res, next) => {
    console.log('two');
    next();
}

const three = (req, res) => {
    console.log('three');
    res.send('Finished!');
}

app.get('/chain(.html)?', [one, two, three]);



app.get('/*', (req, res) => {
    res.status(404).sendFile(path.join(__dirname, 'views', '404.html'));
})

app.listen(PORT, () => console.log (`server running on port ${PORT}`));