add html parsing & file sending

lib/index.js

@@ -4,6 +4,7 @@ const path = require('path')
 
 const crawl = require('./crawler')
 const parseHTML = require('./parser')
+const generateICS = require('./ics')
 
 const port = process.env.PORT || 3000
 const app = express()
@@ -17,19 +18,36 @@ app.get('/', (req, res) => {
 })
 
 app.get('*', (req, res) => {
-  res.render('404')
+  res.status(400).render('404')
 })
 
 app.post('/download', async (req, res) => {
   const { url } = req.body
 
+  if (!/facebook/.test(url)) {
+    return res
+      .status(500)
+      .render(
+        'error',
+        { error: 'Not Facebook URL!' }
+      )
+  }
+
   try {
     const html = await crawl(url)
     const data = parseHTML(html)
-    console.log(data)
+    const ics = await generateICS(data)
+
+    if (ics) {
+      return res
+        .contentType('text/calendar')
+        .send(200, new Buffer(ics, 'utf8'))
+    }
   } catch (err) {
     console.error(err)
-    return res.render('error', { error: err.toString() })
+    return res
+      .status(500)
+      .render('error', { error: err.toString() })
   }
 
   return res.render('download', { url })