Cómo comenzar a usar el SDK de Driver para iOS

   sudo gem install cocoapods

import GoogleRidesharingDriver

private let providerURL = "INSERT_YOUR_TOKEN_PROVIDER_URL"

class SampleAccessTokenProvider: NSObject, GMTDAuthorization {
  private struct AuthToken {
    // The cached vehicle token.
    let token: String
    // Keep track of when the token expires for caching.
    let expiration: TimeInterval
    // Keep track of the vehicle ID the cached token is for.
    let vehicleID: String
  }

  enum AccessTokenError: Error {
    case missingAuthorizationContext
    case missingData
  }

  private var authToken: AuthToken?

  func fetchToken(
    with authorizationContext: GMTDAuthorizationContext?,
    completion: @escaping GMTDAuthTokenFetchCompletionHandler
  ) {
    // Get the vehicle ID from the authorizationContext. This is set by the Driver SDK.
    guard let authorizationContext = authorizationContext else {
      completion(nil, AccessTokenError.missingAuthorizationContext)
      return
    }
    let vehicleID = authorizationContext.vehicleID

    // If appropriate, use the cached token.
    if let authToken = authToken,
      authToken.expiration > Date.now.timeIntervalSince1970 && authToken.vehicleID == vehicleID
    {
      completion(authToken.token, nil)
      return
    }

    // Otherwise, try to fetch a new token from your server.
    let request = URLRequest(url: URL(string: providerURL))
    let task = URLSession.shared.dataTask(with: request) { [weak self] data, _, error in
      guard let strongSelf = self else { return }
      guard error == nil else {
        completion(nil, error)
        return
      }

      // Replace the following key values with the appropriate keys based on your
      // server's expected response.
      let vehicleTokenKey = "VEHICLE_TOKEN_KEY"
      let tokenExpirationKey = "TOKEN_EXPIRATION"
      guard let data = data,
        let fetchData = try? JSONSerialization.jsonObject(with: data) as? [String: Any],
        let token = fetchData[vehicleTokenKey] as? String,
        let expiration = fetchData[tokenExpirationKey] as? Double
      else {
        completion(nil, AccessTokenError.missingData)
        return
      }

      strongSelf.authToken = AuthToken(
        token: token, expiration: expiration, vehicleID: vehicleID)
      completion(token, nil)
    }
    task.resume()
  }
}

#import "SampleAccessTokenProvider.h"
#import <GoogleRidesharingDriver/GoogleRidesharingDriver.h>

// SampleAccessTokenProvider.h
@interface SampleAccessTokenProvider : NSObject<GMTDAuthorization>
@end

static NSString *const PROVIDER_URL = @"INSERT_YOUR_TOKEN_PROVIDER_URL";

// SampleAccessTokenProvider.m
@implementation SampleAccessTokenProvider{
  // The cached vehicle token.
  NSString *_cachedVehicleToken;
  // Keep track of the vehicle ID the cached token is for.
  NSString *_lastKnownVehicleID;
  // Keep track of when tokens expire for caching.
  NSTimeInterval _tokenExpiration;
}

-   (void)fetchTokenWithContext:(nullable GMTDAuthorizationContext *)authorizationContext
                   completion:(nonnull GMTDAuthTokenFetchCompletionHandler)completion {
  // Get the vehicle ID from the authorizationContext. This is set by the Driver SDK.
  NSString *vehicleID = authorizationContext.vehicleID;
  if (!vehicleID) {
    NSAssert(NO, @"Vehicle ID is missing from authorizationContext.");
    return;
  }

  // Clear cached vehicle token if vehicle ID has changed.
  if (![_lastKnownVehicleID isEqual:vehicleID]) {
    _tokenExpiration = 0.0;
    _cachedVehicleToken = nil;
  }
  _lastKnownVehicleID = vehicleID;

  // Clear cached vehicletoken if it has expired.
  if ([[NSDate date] timeIntervalSince1970] > _tokenExpiration) {
    _cachedVehicleToken = nil;
  }

  // If appropriate, use the cached token.
  if (_cachedVehicleToken) {
    completion(_cachedVehicleToken, nil);
    return;
  }
  // Otherwise, try to fetch a new token from your server.
  NSURL *requestURL = [NSURL URLWithString:PROVIDER_URL];
  NSMutableURLRequest *request =
      [[NSMutableURLRequest alloc] initWithURL:requestURL];
  request.HTTPMethod = @"GET";
  // Replace the following key values with the appropriate keys based on your
  // server's expected response.
  NSString *vehicleTokenKey = @"VEHICLE_TOKEN_KEY";
  NSString *tokenExpirationKey = @"TOKEN_EXPIRATION";
  __weak typeof(self) weakSelf = self;
  void (^handler)(NSData *_Nullable data, NSURLResponse *_Nullable response,
                  NSError *_Nullable error) =
      ^(NSData *_Nullable data, NSURLResponse *_Nullable response, NSError *_Nullable error) {
        typeof(self) strongSelf = weakSelf;
        if (error) {
          completion(nil, error);
          return;
        }

        NSError *JSONError;
        NSMutableDictionary *JSONResponse =
            [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&JSONError];

        if (JSONError) {
          completion(nil, JSONError);
          return;
        } else {
          // Sample code only. No validation logic.
          id expirationData = JSONResponse[tokenExpirationKey];
          if ([expirationData isKindOfClass:[NSNumber class]]) {
            NSTimeInterval expirationTime = ((NSNumber *)expirationData).doubleValue;
            strongSelf->_tokenExpiration = [[NSDate date] timeIntervalSince1970] + expirationTime;
          }
          strongSelf->_cachedVehicleToken = JSONResponse[vehicleTokenKey];
          completion(JSONResponse[vehicleTokenKey], nil);
        }
      };
  NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
  NSURLSession *mainQueueURLSession =
      [NSURLSession sessionWithConfiguration:config delegate:nil
                               delegateQueue:[NSOperationQueue mainQueue]];
  NSURLSessionDataTask *task = [mainQueueURLSession dataTaskWithRequest:request completionHandler:handler];
  [task resume];
}

@end

import GoogleRidesharingDriver

private let providerID = "INSERT_YOUR_PROVIDER_ID"

class SampleViewController: UIViewController {
  private let mapView: GMSMapView

  override func viewDidLoad() {
    super.viewDidLoad()

    let vehicleID = "INSERT_CREATED_VEHICLE_ID"
    let accessTokenProvider = SampleAccessTokenProvider()
    let driverContext = GMTDDriverContext(
      accessTokenProvider: accessTokenProvider,
      providerID: providerID,
      vehicleID: vehicleID,
      navigator: mapView.navigator)
    let ridesharingDriverAPI = GMTDRidesharingDriverAPI(driverContext: driverContext)
  }
}

#import "SampleViewController.h"
#import "SampleAccessTokenProvider.h"
#import <GoogleRidesharingDriver/GoogleRidesharingDriver.h>

static NSString *const PROVIDER_ID = @"INSERT_YOUR_PROVIDER_ID";

@implementation SampleViewController {
  GMSMapView *_mapView;
}

-   (void)viewDidLoad {
  NSString *vehicleID = @"INSERT_CREATED_VEHICLE_ID";
  SampleAccessTokenProvider *accessTokenProvider =
                                [[SampleAccessTokenProvider alloc] init];
  GMTDDriverContext *driverContext =
    [[GMTDDriverContext alloc] initWithAccessTokenProvider:accessTokenProvider
                                                providerID:PROVIDER_ID
                                                 vehicleID:vehicleID
                                                 navigator:_mapView.navigator];

  GMTDRidesharingDriverAPI *ridesharingDriverAPI = [[GMTDRidesharingDriverAPI alloc] initWithDriverContext:driverContext];
}

import GoogleRidesharingDriver

private let providerID = "INSERT_YOUR_PROVIDER_ID"

class SampleViewController: UIViewController, GMTDVehicleReporterListener {
  private let mapView: GMSMapView

  override func viewDidLoad() {
    // Assumes you have implemented the sample code up to this step.
    ridesharingDriverAPI.vehicleReporter.add(self)
  }

  func vehicleReporter(_ vehicleReporter: GMTDVehicleReporter, didSucceed vehicleUpdate: GMTDVehicleUpdate) {
    // Handle update succeeded.
  }

  func vehicleReporter(_ vehicleReporter: GMTDVehicleReporter, didFail vehicleUpdate: GMTDVehicleUpdate, withError error: Error) {
    // Handle update failed.
  }
}

/*

    *   SampleViewController.h
 */
@interface SampleViewController : UIViewController<GMTDVehicleReporterListener>
@end

/*

    *   SampleViewController.m
 */
#import "SampleViewController.h"
#import "SampleAccessTokenProvider.h"
#import <GoogleRidesharingDriver/GoogleRidesharingDriver.h>

static NSString *const PROVIDER_ID = @"INSERT_YOUR_PROVIDER_ID";

@implementation SampleViewController {
  GMSMapView *_mapView;
}

-   (void)viewDidLoad {
  // Assumes you have implemented the sample code up to this step.
  [ridesharingDriverAPI.vehicleReporter addListener:self];
}

-   (void)vehicleReporter:(GMTDVehicleReporter *)vehicleReporter didSucceedVehicleUpdate:(GMTDVehicleUpdate *)vehicleUpdate {
  // Handle update succeeded.
}

-   (void)vehicleReporter:(GMTDVehicleReporter *)vehicleReporter didFailVehicleUpdate:(GMTDVehicleUpdate *)vehicleUpdate withError:(NSError *)error {
  // Handle update failed.
}

@end

import GoogleRidesharingDriver

private let providerID = "INSERT_YOUR_PROVIDER_ID"

class SampleViewController: UIViewController, GMTDVehicleReporterListener {
  private let mapView: GMSMapView

  override func viewDidLoad() {
    // Assumes you have implemented the sample code up to this step.
    if let roadSnappedLocationProvider = mapView.roadSnappedLocationProvider {
      roadSnappedLocationProvider.add(ridesharingDriverAPI.vehicleReporter)
      roadSnappedLocationProvider.startUpdatingLocation()
    }
  }
}

/*

    *   SampleViewController.h
 */
@interface SampleViewController : UIViewController<GMTDVehicleReporterListener>
@end

/*

    *   SampleViewController.m
 */
#import "SampleViewController.h"
#import "SampleAccessTokenProvider.h"
#import <GoogleRidesharingDriver/GoogleRidesharingDriver.h>

static NSString *const PROVIDER_ID = @"INSERT_YOUR_PROVIDER_ID";

@implementation SampleViewController {
  GMSMapView *_mapView;
}

-   (void)viewDidLoad {
  // Assumes you have implemented the sample code up to this step.
  [_mapView.roadSnappedLocationProvider addListener:ridesharingDriverAPI.vehicleReporter];
  [_mapView.roadSnappedLocationProvider startUpdatingLocation];
}

@end

import GoogleRidesharingDriver

private let providerID = "INSERT_YOUR_PROVIDER_ID"

class SampleViewController: UIViewController, GMTDVehicleReporterListener {
  private let mapView: GMSMapView

  override func viewDidLoad() {
    // Assumes you have implemented the sample code up to this step.
    ridesharingDriverAPI.vehicleReporter.locationTrackingEnabled = true
  }
}

/*
    *   SampleViewController.m
 */
#import "SampleViewController.h"
#import "SampleAccessTokenProvider.h"
#import <GoogleRidesharingDriver/GoogleRidesharingDriver.h>

static NSString *const PROVIDER_ID = @"INSERT_YOUR_PROVIDER_ID";

@implementation SampleViewController {
  GMSMapView *_mapView;
}

-   (void)viewDidLoad {
  // Assumes you have implemented the sample code up to this step.
  ridesharingDriverAPI.vehicleReporter.locationTrackingEnabled = YES;
}

@end

import GoogleRidesharingDriver

private let providerID = "INSERT_YOUR_PROVIDER_ID"

class SampleViewController: UIViewController, GMTDVehicleReporterListener {
  private let mapView: GMSMapView

  override func viewDidLoad() {
    // Assumes you have implemented the sample code up to this step.
    ridesharingDriverAPI.vehicleReporter.update(.online)
  }
}

#import "SampleViewController.h"
#import "SampleAccessTokenProvider.h"
#import <GoogleRidesharingDriver/GoogleRidesharingDriver.h>

static NSString *const PROVIDER_ID = @"INSERT_YOUR_PROVIDER_ID";

@implementation SampleViewController {
  GMSMapView *_mapView;
}

-   (void)viewDidLoad {
  // Assumes you have implemented the sample code up to this step.
  [ridesharingDriverAPI.vehicleReporter
                                   updateVehicleState:GMTDVehicleStateOnline];
}

@end

import GoogleRidesharingDriver

class VehicleReporterListener: NSObject, GMTDVehicleReporterListener {
  func vehicleReporter(
    _ vehicleReporter: GMTDVehicleReporter,
    didFail vehicleUpdate: GMTDVehicleUpdate,
    withError error: Error
  ) {
    let fullError = error as NSError
    if let innerError = fullError.userInfo[NSUnderlyingErrorKey] as? NSError {
      let innerFullError = innerError as NSError
      if innerFullError.localizedDescription.contains("update_mask cannot be empty") {
        emptyMaskUpdates += 1
        return
      }
    }
    failedUpdates += 1
  }

  override init() {
    emptyMaskUpdates = 0
    failedUpdates = 0
  }
}

#import "VehicleReporterListener.h"
#import <GoogleRidesharingDriver/GoogleRidesharingDriver.h>

@implementation VehicleReporterListener {
  NSInteger emptyMaskUpdates = 0;
  NSInteger failedUpdates = 0;
}

-   (void)vehicleReporter:(GMTDVehicleReporter *)vehicleReporter
   didFailVehicleUpdate:(GMTDVehicleUpdate *)vehicleUpdate
              withError:(NSError *)error {
  for (NSError *underlyingError in error.underlyingErrors) {
    if ([underlyingError.localizedDescription containsString:@"update_mask cannot be empty"]) {
      emptyMaskUpdates += 1;
      return;
    }
  }
  failedUpdates += 1
}

@end

vehicleReporter.locationTrackingEnabled = false

_vehicleReporter.locationTrackingEnabled = NO;