const express = require('express') const bodyParser = require('body-parser') const path = require('path') const favicon = require('serve-favicon') const rateLimit = require('express-rate-limit') const retrieveICS = require('./services/ics-retriever') const { genericErrorHandler, checkURLParameter, forceSecure, createRouteLogger, createErrorLogger, } = require('./middlewares') const { createAppLogger } = require('./utils') const port = process.env.PORT const certEndpoint = process.env.CERT_ENDPOINT || '' const certSecret = process.env.CERT_SECRET || '' const isDevelopment = process.env.NODE_ENV === 'development' const enforceHTTPS = Boolean(process.env.ENFORCE_HTTPS) const app = express() const appLogger = createAppLogger({ dev: isDevelopment }) const limiter = rateLimit({ windowMs: 60 * 1000, max: 10, }) const pkg = require('../package.json') const version = pkg.version || '' // Force app to always redirect to HTTPS // use when you can't configure web server if (enforceHTTPS) { app.use(forceSecure) } // Server logs // You can alternatively enable these to mimic logs created // by your web server if (isDevelopment) { app.use(createRouteLogger({ dev: isDevelopment })) } app.set('view engine', 'ejs') app.set('views', path.join(__dirname, 'views')) app.set('trust proxy', 1) app.use(express.static(path.join(__dirname, '..', 'dist'))) //app.use(favicon(path.join(__dirname, '..', 'dist', 'favicon.ico'))) app.use(bodyParser.urlencoded({ extended: true })) const indexFile = path.join(__dirname, '..', 'dist', 'index.html') if (certEndpoint) { app.get(`/${certEndpoint}`, (req, res) => { res.status(200).send(certSecret) }) } app.get('/error', (req, res) => { const error = req.error || req.query.error || '' res .status(500) .render('error', { error }) }) app.get('/about', (req, res) => { res.render('about', { version }) }) // NOTE: Capture all unkown URLs app.get('*', (req, res) => { res.status(400).render('404') }) app.use('/download', limiter) app.use('/download', checkURLParameter) app.post('/download', async (req, res, next) => { try { const { url } = req.body const ics = await retrieveICS(url, { logger: appLogger, }) res .contentType('text/calendar') .status(200) .send(Buffer.from(ics, 'utf8')) } catch (err) { next(err) } }) app.use(createErrorLogger({ dev: isDevelopment })) app.use(genericErrorHandler) app.listen(port)