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Handling iOS Deep Links Without the SDK

For iOS apps that do not use Iterable's SDK, handle deep links sent from Iterable with code similar to the following:

Swift

let ITBL_DEEPLINK_REGEX = "/a/[a-zA-Z0-9]+"

func application(_ application: UIApplication, continue userActivity: NSUserActivity, restorationHandler: @escaping ([UIUserActivityRestoring]?) -> Void) -> Bool {
    guard let urlString  = userActivity.webpageURL?.absoluteString else {
        return false
    }

    let customRouteCallback = { (routeURL: String) -> Bool in
        // <MAKE A CUSTOM CALL TO YOUR APP'S ROUTES HERE WITH THE 'routeURL'>
        // ....
        // return true if you have handled the routeURL, false otherwise
        return true
    }

    if isIterableDeepLink(urlString) {
        let trackAndRedirectTask = URLSession.shared.dataTask(with: URL(string: urlString)!) {(data, response, error) in
            _ = customRouteCallback(response!.url!.absoluteString)
        }
        trackAndRedirectTask.resume()
        return true
    } else {
        return customRouteCallback(urlString)
    }
}

private func isIterableDeepLink(_ urlString: String) -> Bool {
    guard let regex = try? NSRegularExpression(pattern: ITBL_DEEPLINK_REGEX, options: []) else {
        return false
    }
    
    return regex.firstMatch(in: urlString, options: [], range: NSMakeRange(0, urlString.count)) != nil
}

Objective-C

#define ITBL_DEEPLINK_IDENTIFIER @"/a/[a-zA-Z0-9]+"

- (BOOL)application:(UIApplication *)application continueUserActivity:(NSUserActivity *)userActivity restorationHandler:(void (^)(NSArray *))restorationHandler {
    NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:ITBL_DEEPLINK_IDENTIFIER options:0 error:NULL];
    NSString *urlString = userActivity.webpageURL.absoluteString;
    NSTextCheckingResult *match = [regex firstMatchInString:urlString options:0 range:NSMakeRange(0, [urlString length])];
        
    void (^customRouteCallback)(NSString *) = ^(NSString * routeURL) {
        // <MAKE A CUSTOM CALL TO YOUR APP'S ROUTES HERE WITH THE 'routeURL'>
    };    
        
    if (match == NULL) {
        customRouteCallback(urlString);
    } else {
        NSURLSessionDataTask *trackAndRedirectTask = 
        [[NSURLSession sharedSession] dataTaskWithURL:[NSURL URLWithString:urlString]
            completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
                customRouteCallback(response.URL.absoluteString);
            }];
        [trackAndRedirectTask resume];
    }

    return YES;
}

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