chore: Choose osano variant based on country

.gitignore

@@ -88,3 +88,6 @@ yarn-error.log
 .devcontainer
 
 src/images/infrastructure_screenshot_full_sonarqube-dashboard.webp
+
+# Local Netlify folder
+.netlify

netlify.toml

@@ -4,6 +4,10 @@ package = "@netlify/plugin-gatsby"
 [functions]
   included_files = ["!.cache/data/datastore/data.mdb","!.cache/query-engine"]
 
+[[edge_functions]]
+  path = "/*"
+  function = "osano-country"
+
 [[headers]]
 for = "/*"
 

netlify/edge-functions/osano-country.js

@@ -0,0 +1,67 @@
+import { HTMLRewriter } from 'https://ghuc.cc/worker-tools/html-rewriter/index.ts';
+
+export default async (request, context) => {
+  const response = await context.next();
+  const hasGdpr = [
+    'AT',
+    'BE',
+    'BG',
+    'HR',
+    'CY',
+    'CZ',
+    'DK',
+    'EE',
+    'FI',
+    'FR',
+    'DE',
+    'GR',
+    'HU',
+    'IE',
+    'IT',
+    'LV',
+    'LT',
+    'LU',
+    'MT',
+    'NL',
+    'PL',
+    'PT',
+    'RO',
+    'SK',
+    'SI',
+    'ES',
+    'SE',
+  ].includes(context.geo.country.code);
+
+  if (hasGdpr) {
+    return (
+      new HTMLRewriter()
+        // .on('script', {
+        //   text(text) {
+        //     buffer += text.text;
+
+        //     if (text.lastInTextNode) {
+        //       text.replace(buffer.replace(/variant=one/gi, 'variant=two'));
+        //       buffer = '';
+        //     } else {
+        //       text.remove();
+        //     }
+        //   },
+        // })
+        .on('script', {
+          element(element) {
+            const scriptSrc = element.getAttribute('src');
+            if (
+              typeof scriptSrc === 'string' &&
+              scriptSrc.includes('cmp.osano.com/')
+            ) {
+              element.setAttribute(
+                'src',
+                scriptSrc.replace(/variant=one/gi, 'variant=two')
+              );
+            }
+          },
+        })
+        .transform(response)
+    );
+  }
+};