refactor retrieving ICS file

lib/index.js

@@ -4,10 +4,12 @@ const path = require('path')
 const favicon = require('serve-favicon')
 const rateLimit = require('express-rate-limit')
 
-const crawl = require('./crawler')
-const parseHTML = require('./parser')
-const generateICS = require('./ics')
-const { genericErrorHandler, checkURLParameter, forceSecure } = require('./middlewares')
+const retrieveICS = require('./services/ics-retriever')
+const {
+  genericErrorHandler,
+  checkURLParameter,
+  forceSecure,
+} = require('./middlewares')
 
 const port = process.env.PORT
 const certEndpoint = process.env.CERT_ENDPOINT || ''
@@ -50,22 +52,17 @@ app.get('*', (req, res) => {
 app.use('/download', checkURLParameter)
 app.use('/download', rateLimit())
 app.post('/download', async (req, res, next) => {
-  const { url } = req.body
-
   try {
-    const html = await crawl(url)
-    const data = parseHTML(html)
-    const ics = await generateICS(data)
+    const { url } = req.body
 
-    if (ics) {
-      return res
-        .contentType('text/calendar')
-        .status(200)
-        .send(new Buffer(ics, 'utf8'))
-    }
+    const ics = await retrieveICS(url)
+
+    res
+      .contentType('text/calendar')
+      .status(200)
+      .send(new Buffer(ics, 'utf8'))
   } catch (err) {
     next(err)
-    return
   }
 })