Handle Helena Express deep links with the home page barcode scanner

www/assets/js/home.js

@@ -33,6 +33,8 @@ function openGenericBarcodeScanner() {
         } else if (trackingcoderegex.test(result)) {
             code = result;
             action = "track";
+        } else if (result.startsWith("https://helena.express/")) {
+            action = "hlnexurl";
         }
 
         switch (action) {
@@ -49,6 +51,9 @@ function openGenericBarcodeScanner() {
                 router.navigate("/crypto?paymenturi=" + code);
                 //app.dialog.alert("Not implemented.");
                 break;
+            case "hlnexurl":
+                handleDeepLink(result);
+                break;
             default:
                 app.dialog.alert("This app can't understand what's in that barcode.", "Error");
                 return;

www/assets/js/platform.js

@@ -159,6 +159,9 @@ function handleDeepLink(href) {
             break;
         case "/app":
             break;
+        case "/app/get":
+            app.dialog.alert("You already have the Helena Express app. You're using it right now!", "Hi there!");
+            break;
         case "/track":
             if (link.fragment) {
                 router.navigate("/track/" + link.fragment);