// main.m
@import MapboxDirections;

MBDirections *directions = [[MBDirections alloc] initWithAccessToken:@"<#your access token#>"];

// main.m
MBDirections *directions = [MBDirections sharedDirections];

// main.m

NSArray<MBWaypoint *> *waypoints = @[
    [[MBWaypoint alloc] initWithCoordinate:CLLocationCoordinate2DMake(38.9131752, -77.0324047) coordinateAccuracy:-1 name:@"Mapbox"],
    [[MBWaypoint alloc] initWithCoordinate:CLLocationCoordinate2DMake(38.8977, -77.0365) coordinateAccuracy:-1 name:@"White House"],
];
MBRouteOptions *options = [[MBRouteOptions alloc] initWithWaypoints:waypoints
                                                  profileIdentifier:MBDirectionsProfileIdentifierAutomobileAvoidingTraffic];
options.includesSteps = YES;

NSURLSessionDataTask *task = [directions calculateDirectionsWithOptions:options
                                                      completionHandler:^(NSArray<MBWaypoint *> * _Nullable waypoints,
                                                                          NSArray<MBRoute *> * _Nullable routes,
                                                                          NSError * _Nullable error) {
    if (error) {
        NSLog(@"Error calculating directions: %@", error);
        return;
    }
    
    MBRoute *route = routes.firstObject;
    MBRouteLeg *leg = route.legs.firstObject;
    if (leg) {
        NSLog(@"Route via %@:", leg);
        
        NSLengthFormatter *distanceFormatter = [[NSLengthFormatter alloc] init];
        NSString *formattedDistance = [distanceFormatter stringFromMeters:leg.distance];
        
        NSDateComponentsFormatter *travelTimeFormatter = [[NSDateComponentsFormatter alloc] init];
        travelTimeFormatter.unitsStyle = NSDateComponentsFormatterUnitsStyleShort;
        NSString *formattedTravelTime = [travelTimeFormatter stringFromTimeInterval:route.expectedTravelTime];
        
        NSLog(@"Distance: %@; ETA: %@", formattedDistance, formattedTravelTime);
        
        for (MBRouteStep *step in leg.steps) {
            NSLog(@"%@", step.instructions);
            NSString *formattedDistance = [distanceFormatter stringFromMeters:step.distance];
            NSLog(@"— %@ —", formattedDistance);
        }
    }
}];

// main.m

if (route.coordinateCount) {
    // Convert the route’s coordinates into a polyline.
    CLLocationCoordinate2D *routeCoordinates = malloc(route.coordinateCount * sizeof(CLLocationCoordinate2D));
    [route getCoordinates:routeCoordinates];
    MGLPolyline *routeLine = [MGLPolyline polylineWithCoordinates:routeCoordinates count:route.coordinateCount];
    
    // Add the polyline to the map and fit the viewport to the polyline.
    [mapView addAnnotation:routeLine];
    [mapView setVisibleCoordinates:routeCoordinates count:route.coordinateCount edgePadding:UIEdgeInsetsZero animated:YES];
    
    // Make sure to free this array to avoid leaking memory.
    free(routeCoordinates);
}