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assets/webapps/music.gaiamobile.org/js/services/navigation.js

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+/* exported NavigationService */
+/* global Response, ServiceWorkerWare, bridge */
+'use strict';
+
+importScripts('components/bridge/client.js');
+
+var client = bridge.client({
+  service: 'music-service',
+  endpoint: new BroadcastChannel('music-service')
+});
+
+function NavigationService(worker) {
+  var stopAfter = ServiceWorkerWare.decorators.stopAfter;
+
+  worker.get('/api/navigation/:url', stopAfter((request) => {
+    return new Promise((resolve) => {
+      var url = decodeURIComponent(request.parameters.url);
+      client.method('navigate', url)
+        .then(() => resolve(respond({ success: true })))
+        .catch((error) => {
+          resolve(new Response('', { status: 404 }));
+        });
+    });
+  }));
+
+  function respond(response) {
+    return new Response(JSON.stringify(response), {
+      headers: { 'Content-Type': 'application/json' }
+    });
+  }
+}