/*

 * Hedgewars-iOS, a Hedgewars port for iOS devices

 * Copyright (c) 2009-2012 Vittorio Giovara <vittorio.giovara@gmail.com>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; version 2 of the License

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.

 */

#import "AudioManagerController.h"

#import "AVFoundation/AVAudioPlayer.h"

#import "MXAudioPlayerFadeOperation.h"

#define DEFAULT_VOLUME    0.45f

#define FADEOUT_DURATION  3.0f

#define FADEIN_DURATION   2.0f

static AudioManagerController *mainInstance;

@implementation AudioManagerController

@synthesize backgroundMusic, clickSound, backSound, selSound, audioFaderQueue;

+(id) mainManager {

    if (mainInstance == nil)

        mainInstance = [[self alloc] init];

    return mainInstance;

}

- (id)init {

    if ((self = [super init])) {

        self.backgroundMusic = nil;

        self.clickSound = -1;

        self.backSound = -1;

        self.selSound = -1;

        self.audioFaderQueue = nil;

    }

    return self;

}

- (void)dealloc {

    [self unloadSounds];

    mainInstance = nil;

}

- (void)didReceiveMemoryWarning {

    if (self.backgroundMusic.playing == NO)

        self.backgroundMusic = nil;

    if ([self.audioFaderQueue operationCount] == 0)

        self.audioFaderQueue = nil;

    [self unloadSounds];

    MSG_MEMCLEAN();

}

#pragma mark -

#pragma mark background music control

- (void)playBackgroundMusic {

    if ([[[NSUserDefaults standardUserDefaults] objectForKey:@"music"] boolValue] == NO)

        return;

    if (self.backgroundMusic == nil) {

        NSString *musicString = [[NSBundle mainBundle] pathForResource:@"hwclassic" ofType:@"mp3"];

        self.backgroundMusic = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:musicString] error:nil];

        self.backgroundMusic.delegate = nil;

        self.backgroundMusic.numberOfLoops = -1;

    }

    self.backgroundMusic.volume = DEFAULT_VOLUME;

    [self.backgroundMusic play];

}

- (void)pauseBackgroundMusic {

    [self.backgroundMusic pause];

}

- (void)stopBackgroundMusic {

    [self.backgroundMusic stop];

}

- (void)fadeOutBackgroundMusic {

    if ([[[NSUserDefaults standardUserDefaults] objectForKey:@"music"] boolValue] == NO)

        return;

    if (self.audioFaderQueue == nil)

        self.audioFaderQueue = [[NSOperationQueue alloc] init];

    MXAudioPlayerFadeOperation *fadeOut = [[MXAudioPlayerFadeOperation alloc] initFadeWithAudioPlayer:self.backgroundMusic

                                                                                             toVolume:0.0

                                                                                         overDuration:FADEOUT_DURATION];

    [self.audioFaderQueue addOperation:fadeOut];

}

- (void)fadeInBackgroundMusic {

    if ([[[NSUserDefaults standardUserDefaults] objectForKey:@"music"] boolValue] == NO)

        return;

    if (self.audioFaderQueue == nil)

        self.audioFaderQueue = [[NSOperationQueue alloc] init];

    [self playBackgroundMusic];

    MXAudioPlayerFadeOperation *fadeIn = [[MXAudioPlayerFadeOperation alloc] initFadeWithAudioPlayer:self.backgroundMusic

                                                                                            toVolume:DEFAULT_VOLUME

                                                                                        overDuration:FADEIN_DURATION];

    [audioFaderQueue addOperation:fadeIn];

}

#pragma mark -

#pragma mark sound effects control

-(SystemSoundID) loadSound:(NSString *)snd {

    SystemSoundID soundID;

    // get the filename of the sound file in a NSURL format

    NSString *path = [[NSBundle mainBundle] pathForResource:snd ofType:@"caf"];

    NSURL *filePath = [NSURL fileURLWithPath:path isDirectory:NO];

    // use audio sevices to create and play the sound

    AudioServicesCreateSystemSoundID((__bridge CFURLRef)filePath, &soundID);

    return soundID;

}

- (void)unloadSounds {

    AudioServicesDisposeSystemSoundID(clickSound), clickSound = -1;

    AudioServicesDisposeSystemSoundID(backSound), backSound = -1;

    AudioServicesDisposeSystemSoundID(selSound), selSound = -1;

}

- (void)playClickSound {

    if ([[[NSUserDefaults standardUserDefaults] objectForKey:@"sound"] boolValue] == NO)

        return;

    if (self.clickSound == -1)

        self.clickSound = [self loadSound:@"clickSound"];

    AudioServicesPlaySystemSound(self.clickSound);

}

- (void)playBackSound {

    if ([[[NSUserDefaults standardUserDefaults] objectForKey:@"sound"] boolValue] == NO)

        return;

    if (self.backSound == -1)

        self.backSound = [self loadSound:@"backSound"];

    AudioServicesPlaySystemSound(self.backSound);

}

- (void)playSelectSound {

    if ([[[NSUserDefaults standardUserDefaults] objectForKey:@"sound"] boolValue] == NO)

        return;

    if (self.selSound == -1)

        self.selSound = [self loadSound:@"selSound"];

    AudioServicesPlaySystemSound(self.selSound);

}

@end