#import "MLRNImageQueue.h"
#import "MLRNImageQueueOperation.h"
#import "MLRNUtils.h"

@implementation MLRNImageQueue {
  NSOperationQueue *imageQueue;
}

- (id)init {
  if (self = [super init]) {
    imageQueue = [[NSOperationQueue alloc] init];
    imageQueue.name = @"org.maplibre.reactnative.DownloadImageQueue";
  }
  return self;
}

- (void)dealloc {
  [self cancelAllOperations];
}

+ (instancetype)sharedInstance {
  static MLRNImageQueue *sharedInstance = nil;
  static dispatch_once_t onceToken;
  dispatch_once(&onceToken, ^{
    sharedInstance = [[MLRNImageQueue alloc] init];
  });
  return sharedInstance;
}

- (void)cancelAllOperations {
  [imageQueue cancelAllOperations];
}

- (void)addImage:(NSString *)imageURL
                scale:(double)scale
                  sdf:(Boolean)sdf
          imageLoader:(id<RCTImageLoaderProtocol>)imageLoader
    completionHandler:(RCTImageLoaderCompletionBlock)handler {
  MLRNImageQueueOperation *operation = [[MLRNImageQueueOperation alloc] init];
  operation.imageLoader = imageLoader;
  operation.urlRequest = [RCTConvert NSURLRequest:imageURL];
  operation.sdf = sdf;
  operation.completionHandler = handler;
  operation.scale = scale;
  [imageQueue addOperation:operation];
}

@end