/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

#import <React/RCTGIFImageDecoder.h>

#import <ImageIO/ImageIO.h>
#import <QuartzCore/QuartzCore.h>
#import <React/RCTAnimatedImage.h>
#import <React/RCTUtils.h>
#import <ReactCommon/RCTTurboModule.h>

#import "RCTImagePlugins.h"

@interface RCTGIFImageDecoder () <RCTTurboModule>
@end

@implementation RCTGIFImageDecoder

RCT_EXPORT_MODULE()

- (BOOL)canDecodeImageData:(NSData *)imageData
{
char header[7] = {};
[imageData getBytes:header length:6];

return !strcmp(header, "GIF87a") || !strcmp(header, "GIF89a");
}

- (RCTImageLoaderCancellationBlock)decodeImageData:(NSData *)imageData
size:(CGSize)size
scale:(CGFloat)scale
resizeMode:(RCTResizeMode)resizeMode
completionHandler:(RCTImageLoaderCompletionBlock)completionHandler
{
RCTAnimatedImage *image = [[RCTAnimatedImage alloc] initWithData:imageData scale:scale];

if (!image) {
completionHandler(nil, nil);
return ^{
};
}

completionHandler(nil, image);
return ^{
};
}

- (std::shared_ptr<facebook::react::TurboModule>)getTurboModule:
(const facebook::react::ObjCTurboModule::InitParams &)params
{
return nullptr;
}

@end

Class RCTGIFImageDecoderCls()
{
return RCTGIFImageDecoder.class;
}