Add chrome storage

closeme.js

@@ -1,17 +1,33 @@
 const incrementUrl = 'https://us-central1-closeme-1e761.cloudfunctions.net/incrementCounter';
+const storageKey = "popups_closed";
 
 const xhr = new XMLHttpRequest();
-xhr.onreadystatechange = function() {
+xhr.onreadystatechange = () => {
     console.log('Pop-up closed!');
 }
 
+function updateAnalytics(){
+    incrementClosed();
+    xhr.open('GET', incrementUrl, true);
+    xhr.send();
+}
+
+function incrementClosed(){
+    chrome.storage.sync.get([storageKey], (result) => {
+        console.log(result.popups_closed);
+        const value = ((result.popups_closed === undefined) ? 0 : result.popups_closed) + 1;
+        chrome.storage.sync.set({popups_closed : value} , () => {
+            console.log("value is " + value );
+        });
+    });
+}
+
 const observer = new MutationObserver((mutationsList, observer) => {
     const buttons = document.querySelectorAll('.js-dismissMeterButton,.button--close');
     if ( buttons != undefined){
         for (let b of buttons) {
             b.click();
-            xhr.open('GET', incrementUrl, true);
-            xhr.send();
+            updateAnalytics();
         }
     }
 });
@@ -19,4 +35,4 @@ const observer = new MutationObserver((mutationsList, observer) => {
 observer.observe(
     document.getElementsByClassName('site-main')[0], 
     { attributes: false, childList: true, subtree: true }
-);
+);

manifest.json

@@ -9,5 +9,6 @@
             "run_at": "document_idle"
         }
     ],
+    "permissions": ["storage"],
     "manifest_version": 2
   }