/*

     File: AssetItem.h

 Abstract: Model object that stores information about an asset such as its metadata, track information, and allows it to be exported.

  Version: 1.0

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 */

#import <Foundation/Foundation.h>

#import <AVFoundation/AVFoundation.h>

@interface AssetItem : NSObject

@property(readwrite, strong) NSString *title;

@property(readonly, strong) NSURL *assetURL;

@property(readwrite, strong) NSMutableArray *metadata;

@property(readonly, strong) NSArray *tracks;

@property(readwrite, strong) UIImage *thumbnail;

@property(readwrite, strong) AVAssetExportSession *exportSession;

@property(readwrite, strong) NSString *preset;

@property(readonly, strong) NSString *progressLabel;

@property(readonly, unsafe_unretained) BOOL finishedExport;

- (id)initWithURL:(NSURL *)url;

// Load Asset Information

- (void)loadTracksWithCompletionHandler:(void (^)(void))completionHandler;

- (void)loadMetadataWithCompletionHandler:(void (^)(void))completionHandler;

- (NSString *)loadTitleWithCompletionHandler:(void (^)(void))completionHandler;

- (UIImage *)loadThumbnailWithCompletionHandler:(void (^)(void))completionHandler;

// Metadata

- (NSString *)metadataLabelAtIndex:(NSUInteger)index;

+ (NSString *)stringFromKeyOfMetadataItem:(AVMetadataItem *)metadataItem;

// Tracks

- (NSString *)trackLabelAtIndex:(NSUInteger)index;

// Export information

- (NSArray *)supportedPresets;

- (NSArray *)supportedFileTypes;

// Performing exports

- (void)exportAssetWithCompletionHandler:(void (^)(NSError *error))completionHandler;

- (void)resetExport;

@end