index.js

/* eslint-disable babel/new-cap, new-cap */
'use strict';

const app = require('express')();
const server = require('http').Server(app);
const bodyParser = require('body-parser');
const io = require('socket.io')(server);
const convict = require('convict');
const conf = convict({
	port: {
		doc: 'The port on which to listen for POSTs from the tracker.',
		format: 'port',
		default: 8080,
		env: 'PORT',
		arg: 'port'
	},
	secretKey: {
		doc: 'The secret key that must be provided in POST requests for them to be accepted.',
		format: String,
		default: '',
		env: 'SECRET_KEY',
		arg: 'secretKey'
	},
	debug: {
		doc: 'Whether or not to enable debug logging.',
		format: Boolean,
		default: false,
		env: 'DEBUG',
		arg: 'debug'
	}
}).getProperties();

app.use(bodyParser.json());
server.listen(conf.port);
console.log(`Listening on port ${conf.port}.`);

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

// PayPal donations from the tracker are POSTed to us as they come in.
app.post(`/donation`, (req, res) => {
	if (req.query.key !== conf.secretKey) {
		res.sendStatus(403);
		return;
	}

	if (conf.debug) {
		console.log(req.body);
	}

	const data = {
		name: req.body.donor__visiblename,
		rawAmount: req.body.amount,
		newTotal: req.body.new_total,
		domain: req.body.domain
	};

	io.emit('donation', data);
	console.log('Emitted donation:', data);

	res.sendStatus(200);
});