//
//  ReaderVC.m
//  Foresta
//
//  Created by Fabrizio on 28/12/12.
//  Copyright (c) 2012 Odyssey. All rights reserved.
//

#import "ReaderVC.h"
#import <AVFoundation/AVFoundation.h>

@interface ReaderVC ()

@end

@implementation ReaderVC {    
    NSInteger time;
}

@synthesize contentWebView;
@synthesize mp;
@synthesize goBackButton;
@synthesize goOnButton;
@synthesize fadeView;
@synthesize urlToPlay;
@synthesize playPauseButton;
@synthesize indexNumber;

@synthesize slider;

- (id)initWithIndex:(int)indexToShow {
    self = [super initWithNibName:@"ReaderVC" bundle:nil];
    if (self) {
        indexNumber = indexToShow;
    }
    return self;
}

- (void)viewDidLoad {
    [super viewDidLoad];
        
    [[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
    
    AVAudioSession *audioSession = [AVAudioSession sharedInstance];
    [audioSession setCategory:AVAudioSessionCategoryPlayback error:nil];
    [audioSession setActive:YES error:nil];
    
    screen = [UIScreen mainScreen];
    fullScreenRect = screen.bounds;

    playerState = 0;
    
    self.mp = [[MPMoviePlayerController alloc]init];
    [self.mp prepareToPlay];
}

- (void) viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    
    [self chapterToShow:indexNumber];
    [self updateButtonsState];
    
    if(DATAMANAGER.readingChapter != indexNumber && DATAMANAGER.isReading) {
        [self doPlayPause];
    }
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    
    [self setContentWebView:nil];
    [self setMp:nil];
    [self setGoOnButton:nil];
    [self setGoBackButton:nil];
    [self setFadeView:nil];
    [self setUrlToPlay:nil];
    [self setPlayPauseButton:nil];
}

#pragma mark - View Transitions

- (void) doInitFade {
    
	[UIView beginAnimations:nil context:nil];
	[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];
	[UIView setAnimationDuration:0.5];
}

- (void) changeChapter {
    [self doInitFade];
    fadeView.alpha = 1.0;
    contentWebView.alpha = 0.0;
    [UIView commitAnimations];
    
    [self doInitFade];
    contentWebView.alpha = 1.0;
    fadeView.alpha = 0.0;
    [UIView commitAnimations];
}

#pragma mark - Chapter to Show

- (void) updateChapterLabel:(int)index {
    
    [slider setValue:0.0f];
    
    if (index == 0) {
        [slider setMaximumValue:C0_DURATION_FLOAT];
    }
    else if (index == 1) {
        [slider setMaximumValue:C1_DURATION_FLOAT];
    }
    else if (index == 2) {
        [slider setMaximumValue:C2_DURATION_FLOAT];
    }
        
    else {
        [slider setMaximumValue:0.0f];
    }
}

- (void) chapterToShow:(int)index {
    
    [self updateChapterLabel:index];
    
    [self changeChapter];
        
    [contentWebView loadRequest:[NSURLRequest requestWithURL:ChapterEpisodio(index)]];
}

#pragma mark - Timer

- (void) startTimer {
    timer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(count:) userInfo:nil repeats:YES];
}

- (void) count:(NSTimer*)theTimer {
    
    if(slider.value == slider.maximumValue) {
        [timer invalidate];
    }
    
    if(isPlaying) {
        time = round(mp.currentPlaybackTime);
        [slider setValue:time];
        
        NSLog(@"TIMER: %d", time);
    }
}

#pragma mark - Handle UISlider

- (IBAction)doChangeAudioInstantFromSlider {
    
    [mp stop];
    [mp setCurrentPlaybackTime:slider.value];
    [mp prepareToPlay];
    [mp play];
}

#pragma mark - Buttons State

- (void) updateButtonsState {
    
    if(indexNumber  == 0){
        goBackButton.enabled = NO;
        goOnButton.enabled = YES;
    }
    else if(indexNumber == 2) {
        goBackButton.enabled = YES;
        goOnButton.enabled = NO;
    }
    else {
        goBackButton.enabled = YES;
        goOnButton.enabled = YES;
    }
}

- (IBAction)doGoOnGoBack:(id)sender {

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(moviePreloadDidFinish:)
                                                 name:MPMoviePlayerLoadStateDidChangeNotification  object:nil];
    
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(playbackStateChanged)
                                                 name:MPMoviePlayerPlaybackStateDidChangeNotification object:nil];
    [self.mp stop];
    
    UIButton *button = sender;
    
    if(button.tag == 1){
        indexNumber --;
    }
    else {
        indexNumber ++;
    }
    
    [self chapterToShow:indexNumber];
    [self updateButtonsState];
}

- (IBAction)doPlayPause {

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(moviePreloadDidFinish:)
                                                 name:MPMoviePlayerLoadStateDidChangeNotification  object:nil];
    
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(playbackStateChanged)
                                                 name:MPMoviePlayerPlaybackStateDidChangeNotification object:nil];
    if(isPlaying) {
        [self.mp pause];
    }
    else {
        
        if(playerState == 2 && DATAMANAGER.readingChapter == indexNumber) {
            [self.mp play];
        }
        else {
            
            urlToPlay = AudioEpisodio(indexNumber);
            
            [self.mp setContentURL:urlToPlay];
            self.mp.useApplicationAudioSession = true;
            
            [self.mp play];
        }
    }
}

#pragma mark - MoviePlayer Events Notification

- (void) moviePreloadDidFinish:(NSNotification*)notification {
    [[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerLoadStateDidChangeNotification object:nil];
}

- (void) playbackStateChanged {
    /*
     enum {
     MPMoviePlaybackStateStopped,
     MPMoviePlaybackStatePlaying,
     MPMoviePlaybackStatePaused,
     MPMoviePlaybackStateInterrupted,
     MPMoviePlaybackStateSeekingForward,
     MPMoviePlaybackStateSeekingBackward
     };
     typedef NSInteger MPMoviePlaybackState;
     */
    
    [[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackStateDidChangeNotification object:nil];
    
    playerState = mp.playbackState;
    
    switch (mp.playbackState) {
        case 1:
            isPlaying = YES;
            [self startTimer];
            [playPauseButton setBackgroundImage:[UIImage imageNamed:@"pause.png"] forState:UIControlStateNormal];
            slider.enabled = YES;
            break;
            
        default:
            isPlaying = NO;
            [timer invalidate];
            [playPauseButton setBackgroundImage:[UIImage imageNamed:@"PalyerBtn.png"] forState:UIControlStateNormal];
            slider.enabled = NO;
            break;
    }
}


#pragma mark - IBAction

- (IBAction)doBack {

    if(isPlaying) {
        DATAMANAGER.readingChapter = indexNumber;
        DATAMANAGER.isReading = YES;
    }
    else {
        DATAMANAGER.isReading = NO;
    }
    
    [self.navigationController popViewControllerAnimated:YES];
}

@end