private async Task <AlternativeRoutesComposition> UpdateRoutesComposition(DrivingRouteObject drivingRouteObject, bool moveCamera)
{
_logger.Method().Start($"Route id = {drivingRouteObject.Route.RouteId}, move camera = {moveCamera}");
_updateRoutesCompositionCts?.Cancel();
_updateRoutesCompositionCts = new CancellationTokenSource();
Route route = drivingRouteObject.Route;
IReadOnlyList <DrivingRouteObject> routes =
await _internalRouteService.Value.GetAlternativeRouteObjects(route,
_dringGuide.Value.RoutePosition ?? new PolylinePosition(0, 0),
_updateRoutesCompositionCts.Token);
var composition = new AlternativeRoutesComposition(_drivingRouteObjectFactory.Value.Create(drivingRouteObject.Route), routes, _localizationService.Value);
_renderDisposable?.Dispose();
_renderDisposable = await _alternativeRoutesRenderer.Value.Render(composition, _updateRoutesCompositionCts.Token);
_subscriptions?.Dispose();
_subscriptions = OverviewShownStream.Where(show => !show).ToUnitObservable().Subscribe(_ => HideAlternativeRoutes());
if (moveCamera)
{
await MoveCameraToOverview(composition, _updateRoutesCompositionCts.Token);
}
return(composition);
}
public RoutesOverviewPresenter(Lazy <AlternativeRoutesRenderer> alternativeRoutesRenderer,
Lazy <IInternalRouteService> internalRouteService,
Lazy <ILocalizationService> localizationService,
Lazy <IMapCameraPositionPresenter> cameraPresenter,
Lazy <IDrivingGuide> dringGuide,
Lazy <ICameraManager> cameraManager,
Lazy <IDrivingRouteObjectFactory> drivingRouteObjectFactory,
ILogManager logManager,
IObservable <DrivingRouteObject> routesStream)
{
_logger = logManager.GetLogger(Scopes.RoutesOverview, LogManagerFactory.DefaultConfiguration);
_alternativeRoutesRenderer = alternativeRoutesRenderer;
_internalRouteService = internalRouteService;
_localizationService = localizationService;
_cameraPresenter = cameraPresenter;
_dringGuide = dringGuide;
_cameraManager = cameraManager;
_drivingRouteObjectFactory = drivingRouteObjectFactory;
IObservable <(DrivingRouteObject CurRoute, DrivingRouteObject PrevRoute)> routesChangeStream =
routesStream.Skip(1).Zip(routesStream, (cur, prev) => (cur, prev)).Publish().RefCount();
IObservable <DrivingRouteObject> viaPointsChangedStream = routesChangeStream.Where(it => it.CurRoute.ViaPoints.Count != it.PrevRoute.ViaPoints.Count)
.Select(it => it.CurRoute)
.Do(it => _logger.Info($"Via point added or removed, show routes overview, route id={it.Route.RouteId}"));
IObservable <DrivingRouteObject> viaPointsNotChangedStream = routesChangeStream.Where(it => it.CurRoute.ViaPoints.Count == it.PrevRoute.ViaPoints.Count)
.Select(it => it.CurRoute)
.Do(it => _logger.Info($"Via points are not changed, update routes overview, route id={it.Route.RouteId}"));
IObservable <DrivingRouteObject> showOverviewIfHidden = _showOverviewRequestSubject.WithLatestFrom(routesStream, (_, route) => route)
.Do(it => _logger.Info($"Overview button tapped, show routes overview, route id={it.Route.RouteId}"))
.Merge(viaPointsChangedStream)
.Publish()
.RefCount();
OverviewShownStream = showOverviewIfHidden.Select(_ => true).Merge(_hideOverviewRequestSubject.Select(_ => false)).DistinctUntilChanged().Publish().RefCount();
IObservable <DrivingRouteObject> updateOverviewIfShown = viaPointsNotChangedStream
.Where(route => _currentComposition != null && _currentComposition.Routes.All(r => r.Route.RouteId != route.Route.RouteId))
.Do(it => _logger.Info($"Route updated when overview shown, update routes overview, route id={it.Route.RouteId}"));
IObservable <Unit> hideOverfiewIfShown = OverviewShownStream.Where(show => !show).ToUnitObservable().Do(_ => _logger.Info("Hide overview request"));
IObservable <AlternativeRoutesComposition> compostitionsStream = updateOverviewIfShown.Merge(showOverviewIfHidden)
.Select(r => Observable.Interval(TimeSpan.FromMinutes(1))
.ObserveOnDispatcher()
.Select(_ => (Route: r, MoveCamera: false))
.Do(it => _logger.Info($"Update overview by timer, route id={it.Route.Route.RouteId}"))
.StartWith((Route: r, MoveCamera: true)))
.Merge(hideOverfiewIfShown.Select(_ => Observable.Empty <(DrivingRouteObject Route, bool MoveCamera)>()))
.Switch()
.Select(t => UpdateRoutesComposition(t.Route, t.MoveCamera)
.ToObservable()
.Catch <AlternativeRoutesComposition, OperationCanceledException>(_ => Observable.Empty <AlternativeRoutesComposition>())
.Catch <AlternativeRoutesComposition, Exception>(ex =>
{
ExceptionHandler.FailInDebugTrackInRelease(ex);
return(Observable.Empty <AlternativeRoutesComposition>());
}))
.Switch()
.Do(compostion => _currentComposition = compostion);
SelectedRouteStream = compostitionsStream.Select(c => c.AlternativeRouteSelected).Switch().Publish().RefCount();
_subscriptions = OverviewShownStream.Where(show => !show).ToUnitObservable().Subscribe(_ => HideAlternativeRoutes());
}