Refactor, add more helpful errors

Author: mxstbr

index.js

@@ -1,7 +1,7 @@
 const url = require('url')
 const level = require('level')
 const then = require('then-levelup')
-const { send, createError } = require('micro')
+const { send, createError, sendError } = require('micro')
 
 const db = then(level('blog-views'))
 
@@ -11,17 +11,21 @@ module.exports = async function (req, res) {
   if (pathname.length <= 1) {
     throw createError(400, 'Please include a path to a blogpost.')
   }
-  // Get the views
-  let views
+  if (req.method !== 'GET') {
+    throw createError(400, 'Please make a GET request.')
+  }
   try {
-    views = parseInt(await db.get(pathname), 10)
+    const views = parseInt(await db.get(pathname), 10)
+    // Increment the views and send them back to client
+    await db.put(pathname, views + 1)
+    send(res, 200, { views: views + 1 })
   } catch (err) {
-    // If the post doesn't have views yet, initialise the post with one view
-    await db.put(pathname, 1)
-    send(res, 200, { views: 1 })
-    return
+    if (err.notFound) {
+      // Initialise the post with one view
+      await db.put(pathname, 1)
+      send(res, 200, { views: 1 })
+    } else {
+      throw createError(500, 'Something went wrong, sorry about that.')
+    }
   }
-  // Increment the views and send them back to client
-  await db.put(pathname, views + 1)
-  send(res, 200, { views: views + 1 })
 }