MUApplicationDelegate.m

// Copyright 2009-2010 The 'Mumble for iOS' Developers. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#import "MUApplicationDelegate.h"

#import "MUWelcomeScreenPhone.h"
#import "MUWelcomeScreenPad.h"
#import "MUDatabase.h"
#import "MUPublicServerList.h"
#import "MUConnectionController.h"
#import "MUNotificationController.h"
#import "MURemoteControlServer.h"
#import "MUImage.h"

#import <MumbleKit/MKAudio.h>
#import <MumbleKit/MKVersion.h>

#import "PLCrashReporter.h"

@interface MUApplicationDelegate () <UIApplicationDelegate, UIAlertViewDelegate> {
    UIWindow                  *_window;
    UINavigationController    *_navigationController;
    MUPublicServerListFetcher *_publistFetcher;
    BOOL                      _connectionActive;
#ifdef MUMBLE_BETA_DIST
    MUVersionChecker          *_verCheck;
#endif
}
- (void) setupAudio;
- (void) forceKeyboardLoad;
- (void) notifyCrash;
@end

@implementation MUApplicationDelegate

- (void) notifyCrash {
    PLCrashReporter *crashReporter = [PLCrashReporter sharedReporter];
    if ([crashReporter hasPendingCrashReport]) {
        BOOL autoReport = [[NSUserDefaults standardUserDefaults] boolForKey:@"AutoCrashReport"];
        if (autoReport) {
            [self sendPendingCrashReport];
        } else {
            NSString *title = NSLocalizedString(@"Crash Reporting", nil);
            NSString *msg = NSLocalizedString(@"We're terribly sorry. It looks like Mumble has recently crashed. "
                                              @"Do you want to send a crash report to the Mumble developers?", nil);
            UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:title
                                                                message:msg
                                                               delegate:self
                                                      cancelButtonTitle:NSLocalizedString(@"No", nil)
                                                      otherButtonTitles:NSLocalizedString(@"Yes", nil),
                                                                        NSLocalizedString(@"Always", nil), nil];
            [alertView show];
            [alertView release];
        }
    }
}

- (void) sendPendingCrashReport {
    NSError *err = nil;
    PLCrashReporter *crashReporter = [PLCrashReporter sharedReporter];

    NSData *crashData = [crashReporter loadPendingCrashReportDataAndReturnError:&err];
    if (crashData == nil) {
        NSLog(@"MUApplicationDelegate: unable to load pending crash report: %@", err);
        return;
    }
    if (![crashReporter purgePendingCrashReportAndReturnError:&err]) {
        NSLog(@"MUApplicationDelegate: unable to purge pending crash report: %@", err);
    }

    NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:
                                 [NSString stringWithFormat:@"https://mumblecrash.appspot.com/report?ver=%@&gitrev=%@",
                                  [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleVersion"],
                                  [[NSBundle mainBundle] objectForInfoDictionaryKey:@"MumbleGitRevision"], nil]]];
    [req setHTTPMethod:@"POST"];
    [req setHTTPBody:crashData];
    
    [NSURLConnection sendAsynchronousRequest:req queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *resp, NSData *data, NSError *err) {
        if (err != nil) {
            NSLog(@"MUApplicationDelegate: unable to submit crash report: %@", err);
        }
    }];
}

- (void) alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {
    if (buttonIndex == 0) {
        NSError *err = nil;
        PLCrashReporter *crashReporter = [PLCrashReporter sharedReporter];
        if (![crashReporter purgePendingCrashReportAndReturnError:&err]) {
            NSLog(@"MUApplicationDelegate: unable to purge pending crash report: %@", err);
        }
        return;
    }
    if (buttonIndex == 2)
        [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"AutoCrashReport"];
    [self sendPendingCrashReport];
}

- (BOOL) application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    NSError *err = nil;
    [[PLCrashReporter sharedReporter] enableCrashReporterAndReturnError:&err];
    if (err != nil) {
        NSLog(@"MUApplicationDelegate: Unable to enable PLCrashReporter: %@", err);
    }

#ifdef MUMBLE_BETA_DIST
    _verCheck = [[MUVersionChecker alloc] init];
#endif
    
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(connectionOpened:) name:MUConnectionOpenedNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(connectionClosed:) name:MUConnectionClosedNotification object:nil];
    
    // Reset application badge, in case something brought it into an inconsistent state.
    [[UIApplication sharedApplication] setApplicationIconBadgeNumber:0];
    
    // Initialize the notification controller
    [MUNotificationController sharedController];
    
    // Try to fetch an updated public server list
    _publistFetcher = [[MUPublicServerListFetcher alloc] init];
    [_publistFetcher attemptUpdate];
    
    // Set MumbleKit release string
    [[MKVersion sharedVersion] setOverrideReleaseString:
        [NSString stringWithFormat:@"Mumble for iOS %@", [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleVersion"]]];
    
    // Enable Opus unconditionally
    [[MKVersion sharedVersion] setOpusEnabled:YES];

    // Register default settings
    [[NSUserDefaults standardUserDefaults] registerDefaults:[NSDictionary dictionaryWithObjectsAndKeys:
                                                                // Audio
                                                                [NSNumber numberWithFloat:1.0f],   @"AudioOutputVolume",
                                                                [NSNumber numberWithFloat:0.6f],   @"AudioVADAbove",
                                                                [NSNumber numberWithFloat:0.3f],   @"AudioVADBelow",
                                                                @"amplitude",                      @"AudioVADKind",
                                                                @"vad",                            @"AudioTransmitMethod",
                                                                [NSNumber numberWithBool:YES],     @"AudioPreprocessor",
                                                                [NSNumber numberWithBool:YES],     @"AudioEchoCancel",
                                                                [NSNumber numberWithFloat:1.0f],   @"AudioMicBoost",
                                                                @"balanced",                       @"AudioQualityKind",
                                                                [NSNumber numberWithBool:NO],      @"AudioSidetone",
                                                                [NSNumber numberWithFloat:0.2f],   @"AudioSidetoneVolume",
                                                                // Network
                                                                [NSNumber numberWithBool:NO],      @"NetworkForceTCP",
                                                                @"MumbleUser",                     @"DefaultUserName",
                                                             nil]];
    
    [self reloadPreferences];
    [MUDatabase initializeDatabase];
    
#ifdef ENABLE_REMOTE_CONTROL
    if ([[NSUserDefaults standardUserDefaults] boolForKey:@"RemoteControlServerEnabled"]) {
        [[MURemoteControlServer sharedRemoteControlServer] start];
    }
#endif
    
    _window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    
    // Put a background view in here, to have prettier transitions.
    UIImageView *bgView = [[[UIImageView alloc] initWithImage:[MUImage imageNamed:@"BackgroundTextureBlackGradient"]] autorelease];
    [bgView setFrame:[[UIScreen mainScreen] bounds]];
    [_window addSubview:bgView];

    // Add our default navigation controller
    _navigationController = [[UINavigationController alloc] init];
    _navigationController.toolbarHidden = YES;

    UIUserInterfaceIdiom idiom = [[UIDevice currentDevice] userInterfaceIdiom];
    UIViewController *welcomeScreen = nil;
    if (idiom == UIUserInterfaceIdiomPad) {
        welcomeScreen = [[MUWelcomeScreenPad alloc] init];
        [_navigationController pushViewController:welcomeScreen animated:YES];
        [welcomeScreen release];
    } else {
        welcomeScreen = [[MUWelcomeScreenPhone alloc] init];
        [_navigationController pushViewController:welcomeScreen animated:YES];
        [welcomeScreen release];
    }
    
    [_window setRootViewController:_navigationController];
    [_window makeKeyAndVisible];
    
    [self notifyCrash];

    NSURL *url = [launchOptions objectForKey:UIApplicationLaunchOptionsURLKey];
    if ([[url scheme] isEqualToString:@"mumble"]) {
        MUConnectionController *connController = [MUConnectionController sharedController];
        NSString *hostname = [url host];
        NSNumber *port = [url port];
        NSString *username = [url user];
        NSString *password = [url password];
        [connController connetToHostname:hostname port:port ? [port integerValue] : 64738 withUsername:username andPassword:password withParentViewController:welcomeScreen];
        return YES;
    }
    return NO;
}

- (BOOL) application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
    if ([[url scheme] isEqualToString:@"mumble"]) {
        MUConnectionController *connController = [MUConnectionController sharedController];
        if ([connController isConnected]) {
            return NO;
        }
        NSString *hostname = [url host];
        NSNumber *port = [url port];
        NSString *username = [url user];
        NSString *password = [url password];
        [connController connetToHostname:hostname port:port ? [port integerValue] : 64738 withUsername:username andPassword:password withParentViewController:_navigationController.visibleViewController];
        return YES;
    }
    return NO;
}

- (void) applicationWillTerminate:(UIApplication *)application {
    [MUDatabase teardown];
}

- (void) dealloc {
#ifdef MUMBLE_BETA_DIST
    [_verCheck release];
#endif
    [_navigationController release];
    [_window release];
    [super dealloc];
}

- (void) setupAudio {
    // Set up a good set of default audio settings.
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    MKAudioSettings settings;

    if ([[defaults stringForKey:@"AudioTransmitMethod"] isEqualToString:@"vad"])
        settings.transmitType = MKTransmitTypeVAD;
    else if ([[defaults stringForKey:@"AudioTransmitMethod"] isEqualToString:@"continuous"])
        settings.transmitType = MKTransmitTypeContinuous;
    else if ([[defaults stringForKey:@"AudioTransmitMethod"] isEqualToString:@"ptt"])
        settings.transmitType = MKTransmitTypeToggle;
    else
        settings.transmitType = MKTransmitTypeVAD;
    
    settings.vadKind = MKVADKindAmplitude;
    if ([[defaults stringForKey:@"AudioVADKind"] isEqualToString:@"snr"]) {
        settings.vadKind = MKVADKindSignalToNoise;
    } else if ([[defaults stringForKey:@"AudioVADKind"] isEqualToString:@"amplitude"]) {
        settings.vadKind = MKVADKindAmplitude;
    }
    
    settings.vadMin = [defaults floatForKey:@"AudioVADBelow"];
    settings.vadMax = [defaults floatForKey:@"AudioVADAbove"];
    
    NSString *quality = [defaults stringForKey:@"AudioQualityKind"];
    if ([quality isEqualToString:@"low"]) {
        settings.codec = MKCodecFormatSpeex;
        settings.quality = 16000;
        settings.audioPerPacket = 6;
    } else if ([quality isEqualToString:@"balanced"]) {
        // Will fall back to CELT if the 
        // server requires it for inter-op.
        settings.codec = MKCodecFormatOpus;
        settings.quality = 40000;
        settings.audioPerPacket = 2;
    } else if ([quality isEqualToString:@"high"] || [quality isEqualToString:@"opus"]) {
        // Will fall back to CELT if the 
        // server requires it for inter-op.
        settings.codec = MKCodecFormatOpus;
        settings.quality = 72000;
        settings.audioPerPacket = 1;
    } else {
        settings.codec = MKCodecFormatCELT;
        if ([[defaults stringForKey:@"AudioCodec"] isEqualToString:@"opus"])
            settings.codec = MKCodecFormatOpus;
        if ([[defaults stringForKey:@"AudioCodec"] isEqualToString:@"celt"])
            settings.codec = MKCodecFormatCELT;
        if ([[defaults stringForKey:@"AudioCodec"] isEqualToString:@"speex"])
            settings.codec = MKCodecFormatSpeex;
        settings.quality = [defaults integerForKey:@"AudioQualityBitrate"];
        settings.audioPerPacket = [defaults integerForKey:@"AudioQualityFrames"];
    }
    
    settings.noiseSuppression = -42; /* -42 dB */
    settings.amplification = 20.0f;
    settings.jitterBufferSize = 0; /* 10 ms */
    settings.volume = [defaults floatForKey:@"AudioOutputVolume"];
    settings.outputDelay = 0; /* 10 ms */
    settings.micBoost = [defaults floatForKey:@"AudioMicBoost"];
    settings.enablePreprocessor = [defaults boolForKey:@"AudioPreprocessor"];
    if (settings.enablePreprocessor) {
        settings.enableEchoCancellation = [defaults boolForKey:@"AudioEchoCancel"];
    } else {
        settings.enableEchoCancellation = NO;
    }

    settings.enableSideTone = [defaults boolForKey:@"AudioSidetone"];
    settings.sidetoneVolume = [defaults floatForKey:@"AudioSidetoneVolume"];
    
    MKAudio *audio = [MKAudio sharedAudio];
    [audio updateAudioSettings:&settings];
    [audio restart];
}

// Reload application preferences...
- (void) reloadPreferences {
    [self setupAudio];
}

- (void) forceKeyboardLoad {
    UITextField *textField = [[UITextField alloc] initWithFrame:CGRectZero];
    [_window addSubview:textField];
    [textField release];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
    [textField becomeFirstResponder];
}

- (void) keyboardWillShow:(NSNotification *)notification {
    for (UIView *view in [_window subviews]) {
        if ([view isFirstResponder]) {
            [view resignFirstResponder];
            [view removeFromSuperview];
            
            [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil];
        }
    }
}

- (void) connectionOpened:(NSNotification *)notification {
    _connectionActive = YES;
}

- (void) connectionClosed:(NSNotification *)notification {
    _connectionActive = NO;
}

- (void) applicationWillResignActive:(UIApplication *)application {
    // If we have any active connections, don't stop MKAudio. This is
    // for 'clicking-the-home-button' invocations of this method.
    //
    // In case we've been backgrounded by a phone call, MKAudio will
    // already have shut itself down.
    if (!_connectionActive) {
        NSLog(@"MumbleApplicationDelegate: Not connected to a server. Stopping MKAudio.");
        [[MKAudio sharedAudio] stop];
        
#ifdef ENABLE_REMOTE_CONTROL
        // Also terminate the remote control server.
        [[MURemoteControlServer sharedRemoteControlServer] stop];
#endif
    }
}

- (void) applicationDidBecomeActive:(UIApplication *)application {
    // It is possible that we will become active after a phone call has ended.
    // In the case of phone calls, MKAudio will automatically stop itself, to
    // allow the phone call to go through. However, once we're back inside the
    // application, we have to start ourselves again.
    //
    // For regular backgrounding, we usually don't turn off the audio system, and
    // we won't have to start it again.
    if (![[MKAudio sharedAudio] isRunning]) {
        NSLog(@"MumbleApplicationDelegate: MKAudio not running. Starting it.");
        [[MKAudio sharedAudio] start];
        
#if ENABLE_REMOTE_CONTROL
        // Re-start the remote control server.
        [[MURemoteControlServer sharedRemoteControlServer] stop];
        [[MURemoteControlServer sharedRemoteControlServer] start];
#endif
    }
}

@end