22541 expand breadcrumb route-state helpers for label and dns path reuse

lib/routing/routeState.js

@@ -60,3 +60,35 @@ export const resolveSearchResultsHref = ({
         query
     };
 };
+
+export const resolveSearchBreadcrumbLabel = ({
+    query = {},
+    getViewAllLabel = () => null,
+    advancedLabel = "",
+    addressLabel = "",
+    defaultLabel = ""
+} = {}) => {
+    const routeState = normalizeRouteStateQuery(query);
+    const { viewAll, advanced, address, key } = routeState;
+
+    if (viewAll) {
+        return getViewAllLabel(key);
+    }
+
+    const keyedLabel = getViewAllLabel(key);
+    if (keyedLabel) return keyedLabel;
+
+    if (advanced) return advancedLabel;
+    if (address) return addressLabel;
+
+    return defaultLabel;
+};
+
+export const isDnsRoutePath = (pathname = "") => {
+    return (
+        pathname === "/dns" ||
+        pathname.startsWith("/dns/") ||
+        pathname === "/myportal/dns" ||
+        pathname.startsWith("/myportal/dns/")
+    );
+};