H1: Rest API demo käima saamine

const  express = require('express');
const  cors = require('cors');

const app = express();

app.use(cors());
app.use(express.json());
const widgets = [
    { id : 1, name: "Jelizaveta", age:"21"},
    { id : 2, name: "Aljona", age:"32"},
    { id : 3, name: "Volodimir", age:"27"}
];

app.get('/widgets', (req, res) => {
    res.send(widgets);
});

app.get('/widgets/:id', (req, res) => {
    if (typeof widgets[req.params.id - 1] === 'undefined') {
        return res.status(404).send({error: "Widget not found" })
    }
    res.send(widgets[req.params.id - 1])
})

app.post('widgets', (req, res) => {
    if (!req.body.name || !req.body.age) {
        return res.status(400).send({ error : "One or all params are missing"})
    }
    let newWidget = {
        id: widgets.length +1,
        name: req.body.name,
        age: req.body.age
    }
    widgets.push(newWidget)
    req.status(201)
        .location('localhost:8080/widgets/' + (widgets.length -1))
        .send(newWidget)
})

app.delete('/widgets/:id', (req, res) => {
    if (typeof widgets[req.params.id -1] === 'undefined') {
        return res.status(404).send({ error: "Widget not found"})
    }
    widgets.splice(req.params.id -1, 1)
    res.status(204).send()
})

app.listen(8080, () => {
    console.log('API up at: http://localhost:8080')
})