Add ability to not increment the views

Author: mxstbr

README.md

@@ -23,7 +23,9 @@ And that's it! 🎉
 
 ### Tracking views
 
-To track a view simply send a request to `/<yourpagepath>`. If you send a `GET` request, the request will return the total views. If you send a `POST` request, the views will increment but you're not going to get the total views back.
+To track a view simply send a request to `/<yourpagepath>`. If you send a `GET` request, the request will increment the views and return the total views. If you send a `POST` request, the views will increment but you're not going to get the total views back.
+
+If you don't want to increment the views during a `GET` request, set `inc` to `false` in your query parameter. (`/<yourpagepath>?inc=false`)
 
 This is how you'd track pageviews for a website: (though note that this can be used to track anything you want)
 

index.js

@@ -7,28 +7,33 @@ const db = then(level('blog-views'))
 
 module.exports = async function (req, res) {
   // Check that a page is provided
-  const { pathname } = url.parse(req.url)
+  const { pathname, query } = url.parse(req.url, /* parseQueryString */ true)
   if (pathname.length <= 1) {
     throw createError(400, 'Please include a path to a page.')
   }
   if (req.method !== 'GET' && req.method !== 'POST') {
     throw createError(400, 'Please make a GET or a POST request.')
   }
+  const shouldIncrement = query.inc !== 'false' && query.inc !== false
   try {
     const views = parseInt(await db.get(pathname), 10)
     // Increment the views and send them back to client
-    await db.put(pathname, views + 1)
+    if (shouldIncrement) {
+      await db.put(pathname, views + 1)
+    }
     if (req.method === 'GET') {
-      send(res, 200, { views: views + 1 })
+      send(res, 200, { views: shouldIncrement ? views + 1 : views })
     } else {
       send(res, 200)
     }
   } catch (err) {
     if (err.notFound) {
       // Initialise the page with one view
-      await db.put(pathname, 1)
+      if (shouldIncrement) {
+        await db.put(pathname, 1)
+      }
       if (req.method === 'GET') {
-        send(res, 200, { views: 1 })
+        send(res, 200, { views: shouldIncrement ? 1 : 0 })
       } else {
         send(res, 200)
       }