query the background to see if logged in from content script and noti…

…fy interested tabs when auth state changes

background.js

@@ -32,10 +32,18 @@ window.onload = function() {
   initApp();
 };
 
+function notifyOnAuth(tabId) {
+  firebase.auth().onAuthStateChanged(function(user) {
+ console.log("auth state changed; now notify!");
+    chrome.tabs.sendMessage(tabId, {action: "AUTH_STATUS", state: !!user});
+  });
+}
+
 chrome.runtime.onMessage.addListener(function(msg, sender, sendResponse) {
   console.log("Received %o from %o, frame", msg, sender.tab, sender.frameId);
   switch (msg.action) {
     case "AUTH_STATUS":
+      notifyOnAuth(sender.tab.id);
       sendResponse(fbAuthenticated);
       break;
     case "GET":

content_script.js

@@ -1,3 +1,22 @@
+var isAuthed = false;
+
+
+chrome.runtime.onMessage.addListener(
+  function(request, sender, sendResponse) {
+    console.log("CS Received %o from %o, frame", request, sender.tab, sender.frameId);
+    if (request.action == "AUTH_CHANGE") {
+      console.log("Auth state changed", request.state);
+      isAuthed = request.state;
+    }
+  });
+
+
+chrome.runtime.sendMessage({action: "AUTH_STATUS"}, function(response) {
+  console.log("Auth Status response", response);
+  isAuthed = response;
+});
+
+
 var injectScript = function(func) {
   var actualCode = '(' + func + ')();';
   var script = document.createElement('script');
@@ -77,10 +96,14 @@ var loadBatchPageOverlay = function(domRoot) {
 }
 
 
+chrome.runtime.onMessage.addListener(
+  function(request, sender, sendResponse) {
 
-
-
-
+    console.log("CS Received %o from %o, frame", request, sender.tab, sender.frameId);
+    if (request.action == "AUTH_CHANGE") {
+      console.log("Auth state changed", request.state);
+    }
+  });