/*

File: ReachabilityAppDelegate.m

Abstract: The application's controller.

Version: 2.2

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*/

#import "ReachabilityAppDelegate.h"

#import "Reachability.h"

@implementation ReachabilityAppDelegate

- (void) configureTextField: (UITextField*) textField imageView: (UIImageView*) imageView reachability: (Reachability*) curReach

{

    NetworkStatus netStatus = [curReach currentReachabilityStatus];

    BOOL connectionRequired= [curReach connectionRequired];

    NSString* statusString= @"";

    switch (netStatus)

    {

        case NotReachable:

        {

            statusString = @"Access Not Available";

            imageView.image = [UIImage imageNamed: @"stop-32.png"] ;

            //Minor interface detail- connectionRequired may return yes, even when the host is unreachable.  We cover that up here...

            connectionRequired= NO;  

            break;

        }

        case ReachableViaWWAN:

        {

            statusString = @"Reachable WWAN";

            imageView.image = [UIImage imageNamed: @"WWAN5.png"];

            break;

        }

        case ReachableViaWiFi:

        {

             statusString= @"Reachable WiFi";

            imageView.image = [UIImage imageNamed: @"Airport.png"];

            break;

      }

    }

    if(connectionRequired)

    {

        statusString= [NSString stringWithFormat: @"%@, Connection Required", statusString];

    }

    textField.text= statusString;

}

- (void) updateInterfaceWithReachability: (Reachability*) curReach

{

    if(curReach == hostReach)

    {

        [self configureTextField: remoteHostStatusField imageView: remoteHostIcon reachability: curReach];

        NetworkStatus netStatus = [curReach currentReachabilityStatus];

        BOOL connectionRequired= [curReach connectionRequired];

        summaryLabel.hidden = (netStatus != ReachableViaWWAN);

        NSString* baseLabel=  @"";

        if(connectionRequired)

        {

            baseLabel=  @"Cellular data network is available.\n  Internet traffic will be routed through it after a connection is established.";

        }

        else

        {

            baseLabel=  @"Cellular data network is active.\n  Internet traffic will be routed through it.";

        }

        summaryLabel.text= baseLabel;

    }

    if(curReach == internetReach)

    {   

        [self configureTextField: internetConnectionStatusField imageView: internetConnectionIcon reachability: curReach];

    }

    if(curReach == wifiReach)

    {   

        [self configureTextField: localWiFiConnectionStatusField imageView: localWiFiConnectionIcon reachability: curReach];

    }

}

//Called by Reachability whenever status changes.

- (void) reachabilityChanged: (NSNotification* )note

{

    Reachability* curReach = [note object];

    NSParameterAssert([curReach isKindOfClass: [Reachability class]]);

    [self updateInterfaceWithReachability: curReach];

}

- (void) applicationDidFinishLaunching: (UIApplication* )application 

{

    #pragma unused(application)

    contentView.backgroundColor = [UIColor groupTableViewBackgroundColor];

    summaryLabel.hidden = YES;        

    // Observe the kNetworkReachabilityChangedNotification. When that notification is posted, the

    // method "reachabilityChanged" will be called. 

    [[NSNotificationCenter defaultCenter] addObserver: self selector: @selector(reachabilityChanged:) name: kReachabilityChangedNotification object: nil];

    //Change the host name here to change the server your monitoring

    remoteHostLabel.text = [NSString stringWithFormat: @"Remote Host: %@", @"www.apple.com"];

    hostReach = [[Reachability reachabilityWithHostName: @"www.apple.com"] retain];

    [hostReach startNotifier];

    [self updateInterfaceWithReachability: hostReach];

    internetReach = [[Reachability reachabilityForInternetConnection] retain];

    [internetReach startNotifier];

    [self updateInterfaceWithReachability: internetReach];

    wifiReach = [[Reachability reachabilityForLocalWiFi] retain];

    [wifiReach startNotifier];

    [self updateInterfaceWithReachability: wifiReach];

    [window makeKeyAndVisible];

}

@end