/*

 File: LocalBonjourController.m

 Abstract: Handles all of the Bonjour initialization code and back-end to the

 UIScrollView for browsing network service instances of this sample.

 Version: 1.2

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 */

#import "LocalBonjourController.h"

#import "CryptoCommon.h"

#import "ServiceController.h"

#import "AppDelegate.h"

#import "CryptoServer.h"

#import "KeyGeneration.h"

#import "SecKeyWrapper.h"

@implementation LocalBonjourController

@synthesize netServiceBrowser, services, tableView, serviceController, cryptoServer, keyGenerationController;

- (void)viewDidLoad {

    NSMutableArray *anArray = [[NSMutableArray alloc] init];

    self.services = anArray;

    [anArray release];

    // Check to see if keys have been generated.

    if (    ![[SecKeyWrapper sharedWrapper] getPublicKeyRef]        || 

            ![[SecKeyWrapper sharedWrapper] getPrivateKeyRef]       ||

            ![[SecKeyWrapper sharedWrapper] getSymmetricKeyBytes]) {

        [[SecKeyWrapper sharedWrapper] generateKeyPair:kAsymmetricSecKeyPairModulusSize];

        [[SecKeyWrapper sharedWrapper] generateSymmetricKey];

    }

    CryptoServer * thisServer = [[CryptoServer alloc] init];

    self.cryptoServer = thisServer;

    [self.cryptoServer run];

    [thisServer release];

}

- (KeyGeneration *)keyGenerationController {

    if (keyGenerationController == nil) {

        self.keyGenerationController = [[[KeyGeneration alloc] initWithNibName:@"KeyGeneration" bundle:nil] autorelease];

    }

    return keyGenerationController;

}

- (ServiceController *)serviceController {

    if (serviceController == nil) {

        serviceController = [[ServiceController alloc] initWithNibName:@"ServiceView" bundle:nil];

    }

    return serviceController;

}

- (IBAction)regenerateKeys {

    KeyGeneration *controller = self.keyGenerationController;

    controller.server = cryptoServer;

    [self.navigationController presentModalViewController:controller animated:YES];

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {

    // Return YES for supported orientations

    return (interfaceOrientation == UIInterfaceOrientationPortrait);

}

// Creates an NSNetServiceBrowser that searches for services of a particular type in a particular domain.

// If a service is currently being resolved, stop resolving it and stop the service browser from

// discovering other services.

- (BOOL)searchForCryptoServices {

    [self.netServiceBrowser stop];

    [self.services removeAllObjects];

    [tableView reloadData];

    NSNetServiceBrowser * aNetServiceBrowser = [[NSNetServiceBrowser alloc] init];

    aNetServiceBrowser.delegate = self;

    self.netServiceBrowser = aNetServiceBrowser;

    [aNetServiceBrowser release];

    [self.netServiceBrowser searchForServicesOfType:kBonjourServiceType inDomain:@"local"];

    return YES;

}

- (void)netServiceBrowser:(NSNetServiceBrowser*)netServiceBrowser didRemoveService:(NSNetService*)service moreComing:(BOOL)moreComing {

    [self.services removeObject:service];

    if (!moreComing) [tableView reloadData];

}   

- (void)netServiceBrowser:(NSNetServiceBrowser*)netServiceBrowser didFindService:(NSNetService*)service moreComing:(BOOL)moreComing {

#ifndef ALLOW_TO_CONNECT_TO_SELF

    // Don't display our published record

    if (![[cryptoServer.netService name] isEqualToString:[service name]]) {

        // If a service came online, add it to the list and update the table view if no more events are queued.

        [self.services addObject:service];

    }

#else

    [self.services addObject:service];

#endif

    if (!moreComing) {

        [tableView reloadData];

    }

}   

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

    return services.count;

}

- (UITableViewCell *)tableView:(UITableView *)tv cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    UITableViewCell *cell = (UITableViewCell *)[tableView dequeueReusableCellWithIdentifier:@"MyCell"];

    if (cell == nil) {

        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"MyCell"] autorelease];

    }

    cell.textLabel.text = [[services objectAtIndex:indexPath.row] name];

    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;

    return cell;

}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    self.serviceController.service = [self.services objectAtIndex:indexPath.row];

    [self.navigationController pushViewController:self.serviceController animated:YES];

}

- (void)viewDidAppear:(BOOL)animated {

    [self searchForCryptoServices];

}

- (void)dealloc {

    [netServiceBrowser release];

    [services release];

    [tableView release];

    [serviceController release];

    [keyGenerationController release];

    [cryptoServer release];

    [super dealloc];

}

@end