Allow filtering on session fields.

pages/api/website/[id]/stats.js

@@ -11,7 +11,7 @@ export default async (req, res) => {
       return unauthorized(res);
     }
 
-    const { id, start_at, end_at, url, referrer } = req.query;
+    const { id, start_at, end_at, url, referrer, os, browser, device, country } = req.query;
 
     const websiteId = +id;
     const startDate = new Date(+start_at);
@@ -21,10 +21,21 @@ export default async (req, res) => {
     const prevStartDate = new Date(+start_at - distance);
     const prevEndDate = new Date(+end_at - distance);
 
-    const metrics = await getWebsiteStats(websiteId, startDate, endDate, { url, referrer });
+    const metrics = await getWebsiteStats(websiteId, startDate, endDate, {
+      url,
+      referrer,
+      os,
+      browser,
+      device,
+      country,
+    });
     const prevPeriod = await getWebsiteStats(websiteId, prevStartDate, prevEndDate, {
       url,
       referrer,
+      os,
+      browser,
+      device,
+      country,
     });
 
     const stats = Object.keys(metrics[0]).reduce((obj, key) => {