Facebook-Events-iCal-Converter/lib/index.js

97 lines
2.2 KiB
JavaScript

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,
})
// Force app to always redirect to HTTPS
// use when you can't configure web server
if (enforceHTTPS) {
app.use(forceSecure)
}
// Server logs
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, 'public')))
app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')))
app.use(bodyParser.urlencoded({ extended: true }))
if (certEndpoint) {
app.get(`/${certEndpoint}`, (req, res) => {
res.status(200).send(certSecret)
})
}
app.get('/', (req, res) => {
res.render('index')
})
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')
})
// 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(new Buffer(ics, 'utf8'))
} catch (err) {
next(err)
}
})
app.use(createErrorLogger({ dev: isDevelopment }))
app.use(genericErrorHandler)
app.listen(port)