tp/node_servers/feedbackserver.js

const express = require('express');
const bodyParser = require('body-parser');
const { Pool } = require('pg');
const cors = require('cors');

const app = express();
const port = 3000;

app.use(cors());

app.use(bodyParser.json());

const pool = new Pool({
	user: 'postgres',
	host: 'db',
	database: 'postgres',
	password: 'postgres',
	port: 5432,
});

app.get('/reviews', async(req, res) => {
	try {
		const result = await pool.query('SELECT * FROM reviews;');
		res.json(result.rows);
	} catch (err) {
		console.error(err);
		res.status(500).send("Server error");
	}
});

app.post('/reviews', async(req, res) => {
	const { text } = req.body;
	try {
		const result = await pool.query('INSERT INTO reviews (text) VALUES ($1) RETURNING *', [text]);
		res.status(201).json(result.rows[0]);
	} catch (err) {
		console.log(err);
		res.status(500).send("Server error");
	}
});


app.listen(port, '0.0.0.0', () => {
	console.log("Server is running on port ${port}");
});