feat: add logging

chore: simplify code

lib/middlewares/ca.js

@@ -1,11 +1,15 @@
 const pairing = require('../pairing')
+const logger = require('../logger')
 
 function ca (req, res) {
   const token = req.query.token
 
   return pairing.authorizeCaDownload(token)
     .then(ca => res.json({ ca }))
-    .catch(() => res.status(403).json({ error: 'forbidden' }))
+    .catch(error => {
+      logger.error(error.message)
+      res.status(403).json({ error: 'forbidden' })
+    })
 }
 
 module.exports = ca