DocJohnsonSoundboardModel.m

//
//  DocJohnsonSoundboardModel.m
//  DocJohnsonSoundboard
//
//  Created by William LaFrance on 4/6/11.
//  Copyright 2011 William LaFrance. All rights reserved.
//

#import "DocJohnsonSoundboardModel.h"

#define JAVASCRIPT_URL [NSURL URLWithString:@"http://joelandritsch.com/docv_soundboard/clips"]
#define FILE_FORMAT @"http://joelandritsch.com/docv_soundboard/clips/%@"

@implementation DocJohnsonSoundboardModel
@synthesize soundbytes;

- (id)init
{
    self = [super init];
    if (self) {
        // Initialization code here.
        self.soundbytes = [NSMutableArray array];
        NSString *javascript = [NSString stringWithContentsOfURL:JAVASCRIPT_URL
                                                        encoding:[NSString defaultCStringEncoding]
                                                           error:nil];
        
        NSArray *files = [javascript componentsSeparatedByString:@"a href=\""];
        for (int i = 0; i < [files count]; i++) {
            NSString *mp3 = [[[files objectAtIndex:i] componentsSeparatedByString:@"\""] objectAtIndex:0];
            if ([mp3 rangeOfString:@".mp3"].location != NSNotFound) {
                [self.soundbytes addObject:mp3];
                NSLog(@"This is a mp3 file: %@", mp3);
            } else {
                NSLog(@"This is not a mp3 file: %@", mp3);
            }
        }
        
    }
        
    return self;
}

- (NSURL *)urlForIndex:(NSInteger)index
{
    return [NSURL URLWithString:[NSString stringWithFormat:FILE_FORMAT,
                                 [self.soundbytes objectAtIndex:index]]];
}

- (AVAudioPlayer *)playerForIndex:(NSInteger)index
{
    
    NSString *filename = [self.soundbytes objectAtIndex:index];
    NSError *err = nil;
    NSURL *url = [self urlForIndex:index];
    NSData *soundData = [NSData dataWithContentsOfURL:url];
    if (!soundData) {
        NSLog(@"Failed to load MP3 from internet.");
        return nil;
    }
    NSLog(@"Loaded MP3 from internet.");
    
    NSString *dir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
    NSString *localFilename = [dir stringByAppendingPathComponent:filename];
    [soundData writeToFile:localFilename atomically:NO];
    NSLog(@"Wrote MP3 to %@", localFilename);
    
    AVAudioPlayer *mp3 = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:localFilename] error:&err];
    if (!mp3) {
        NSLog(@"Failed to load: %@", err);
        return nil;
    }
    if ([mp3 prepareToPlay]) {
        NSLog(@"Prepared to play. Let's go!");
    }
    return mp3;
}

- (void)dealloc
{
    self.soundbytes = nil;
    [super dealloc];
}

@end