index.js

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

const app = express();
app.use(express.urlencoded({ extended: true }));
app.use(express.json({ strict: true }));
app.use(cors());
app.options('*', cors()); //change to domain in production
app.enable('trust proxy');

var endpoints = {}
fs.readdirSync('./endpoints/').forEach(function (file) {
    let m = require('./endpoints/' + file);
    if (m.name == null || m.execute == null || m.verify == null || m.method == null) {
        console.error(`\x1b[31mInvalid endpoint: ${file}\x1b[0m`);
    }
    else if (m.name in endpoints) {
        console.error(`\x1b[31mDuplicate endpoint name: ${file} (${m.name})\x1b[0m`);
    }
    else {
        endpoints[m.name] = m;
        console.log(`Loaded endpoint: ${file} (${m.name})`);
    }
});

app.use('/', function (req, res) {
    const endpoint = req.url.split('?')[0].slice(1);
    if (!endpoints[endpoint]) {
        res.status(404).json({ status: 404, error: 'Could not find endpoint' });
    }
    else if (endpoints[endpoint].method !== req.method) {
        res.status(400).json({ status: 400, error: `Invalid method for endpoint. Must use ${endpoints[endpoint].method}` });
    }
    else if (endpoints[endpoint].verify(req, res)) {
        try {
            endpoints[endpoint].execute(req, res);
        }
        catch {
            res.sendStatus(500).end({ status: 500, error: 'Internal server error' });
        }
    }
    else {
        res.status(403).json({ status: 403, error: 'Endpoint access denied. Do you have a valid authentication header?' });
    }
})

const PORT = 8080;
app.listen(PORT, () => {
    console.log(`Server listening on port ${PORT}`);
});