//
//  HVLContainer.m
//  Hively
//
//  Created by Christopher Snowhill on 10/29/13.
//  Copyright 2013 __NoWork, Inc__. All rights reserved.
//

#import "HVLContainer.h"
#import "HVLDecoder.h"

@implementation HVLContainer

+ (NSArray *)fileTypes
{
    return [HVLDecoder fileTypes];
}

+ (NSArray *)mimeTypes 
{
	return nil;
}

+ (float)priority
{
    return 1.0f;
}

+ (NSArray *)urlsForContainerURL:(NSURL *)url
{
    if ([url fragment]) {
        // input url already has fragment defined - no need to expand further
        return [NSMutableArray arrayWithObject:url];
    }
    
    id audioSourceClass = NSClassFromString(@"AudioSource");
    id<CogSource> source = [audioSourceClass audioSourceForURL:url];
    
    if (![source open:url])
        return 0;
    
    if (![source seekable])
        return 0;
    
    [source seek:0 whence:SEEK_END];
    long size = [source tell];
    [source seek:0 whence:SEEK_SET];
    
    if ( size > UINT_MAX )
        return nil;
    
    void * data = malloc(size);
    [source read:data amount:size];
	
    struct hvl_tune * tune = hvl_LoadTune( data, (uint32_t) size, 44100, 2 );
    free( data );
    if ( !tune )
        return nil;
    
    int subsongNr = tune->ht_SubsongNr;
    
    hvl_FreeTune( tune );
    
    NSMutableArray *tracks = [NSMutableArray array];
    
    for (int i = 0; i <= subsongNr; ++i) {
        [tracks addObject:[NSURL URLWithString:[[url absoluteString] stringByAppendingFormat:@"#%i", i]]];
    }
    
	return tracks;
}


@end