//
//  CueSheetContainer.m
//  CueSheet
//
//  Created by Zaphod Beeblebrox on 10/8/07.
//  Copyright 2007 __MyCompanyName__. All rights reserved.
//

#import "CueSheetContainer.h"

#import "CueSheet.h"
#import "CueSheetTrack.h"

#import "AudioMetadataReader.h"

@implementation CueSheetContainer

+ (NSArray *)fileTypes
{
	return @[@"cue", @"ogg", @"opus", @"flac", @"wv", @"mp3"];
}

+ (NSArray *)mimeTypes
{
	return @[@"application/x-cue"]; //This is basically useless
}

+ (float)priority
{
    return 16.0f;
}

+ (NSArray *)urlsForContainerURL:(NSURL *)url
{
	if (![url isFileURL]) {
		return @[];
	}
	
    if ([url fragment]) {
        // input url already has fragment defined - no need to expand further
        return [NSMutableArray arrayWithObject:url];
    }
    
	NSMutableArray *tracks = [NSMutableArray array];

    BOOL embedded = NO;
    CueSheet *cuesheet = nil;
    NSDictionary * fileMetadata;
    
    NSString *ext = [url pathExtension];
    if ([ext caseInsensitiveCompare:@"cue"] != NSOrderedSame)
    {
        // Embedded cuesheet check
        fileMetadata = [NSClassFromString(@"AudioMetadataReader") metadataForURL:url skipCue:YES];
        NSString * sheet = [fileMetadata objectForKey:@"cuesheet"];
        if ([sheet length])
        {
            cuesheet = [CueSheet cueSheetWithString:sheet withFilename:[url path]];
        }
        embedded = YES;
    }
    else
        cuesheet = [CueSheet cueSheetWithFile:[url path]];
    
    if (!cuesheet)
        return embedded ? [NSMutableArray arrayWithObject:url] : tracks;

    for (CueSheetTrack *track in [cuesheet tracks]) {
		[tracks addObject:[NSURL URLWithString:[[url absoluteString] stringByAppendingFormat:@"#%@", [track track]]]];
	}
	
	return tracks;
}

@end