httpserver-nodejs-vanilla.js

const http = require('http');
const {once} = require('events');

const users = [
    { id: 1, name: 'John', age: 30 },
    { id: 2, name: 'Paul', age: 22 },
];

const routes = {
    '/users:get': (req, res) => {
        const data = JSON.stringify({
            result: users,
        });

        res.writeHeader(200, {
            'Content-Type': 'application/json',
        });
        res.write(`${data}\n`);
        return res.end();
    },
    '/users:post': async (req, res) => {
        try {
            const [body] = await once(req, 'data');
            const { name, age } = JSON.parse(body)
            const id = Math.floor(Math.random() * 100) + 1;

            users.push({ id, name, age });

            res.writeHeader(201, {
                'Content-Type': 'application/json',
            });
            res.write(
                `${JSON.stringify({
                    message: 'Usuario criado com sucesso!',
                })}\n`
            );
            return res.end();
        } catch (err) {
            res.writeHeader(500, {
                'Content-Type': 'application/json',
            });
            res.write(
                `${JSON.stringify({
                    message: `Error: ${err.message}`,
                })}\n`
            );
            return res.end();
        }
    },
    '/users/:id:delete': (req, res) => {
        res.writeHeader(204);
        return res.end();
    },
    default: (req, res) => {
        res.write('app working!\n');
        return res.end();
    },
};

const handler = (req, res) => {
    const { url, method } = req;

    const routeKey = `${url}:${method.toLowerCase()}`;
    console.log('routeKey', routeKey);

    const fn = routes[routeKey] || routes.default;

    res.writeHeader(200, {
        'Content-Type': 'text/html',
    });
    return fn(req, res);
};

http.createServer(handler).listen(3000, () =>
    console.log('Server start on port 3000')
);