nav: show error when route request fails

selfdrive/ui/qt/maps/map.cc

@@ -147,7 +147,7 @@ void MapWindow::timerUpdate() {
 
   loaded_once = loaded_once || m_map->isFullyLoaded();
   if (!loaded_once) {
-    map_instructions->showError("Map loading");
+    map_instructions->showError("Map Loading");
     return;
   }
 
@@ -343,6 +343,7 @@ void MapWindow::calculateRoute(QMapbox::Coordinate destination) {
 }
 
 void MapWindow::routeCalculated(QGeoRouteReply *reply) {
+  bool got_route = false;
   if (reply->error() == QGeoRouteReply::NoError) {
     if (reply->routes().size() != 0) {
       qWarning() << "Got route response";
@@ -357,6 +358,7 @@ void MapWindow::routeCalculated(QGeoRouteReply *reply) {
       navSource["data"] = QVariant::fromValue<QMapbox::Feature>(feature);
       m_map->updateSource("navSource", navSource);
       m_map->setLayoutProperty("navLayer", "visibility", "visible");
+      got_route = true;
 
       updateETA();
     } else {
@@ -366,6 +368,10 @@ void MapWindow::routeCalculated(QGeoRouteReply *reply) {
     qWarning() << "Got error in route reply" << reply->errorString();
   }
 
+  if (!got_route) {
+    map_instructions->showError("Failed to Route");
+  }
+
   reply->deleteLater();
 }