gistfile1.txt

#import "HTTPClient.h"
#import "KSDeferred.h"

@interface HTTPClient ()
@property (strong, nonatomic) NSURLSession *session;
@property (strong, nonatomic) NSOperationQueue *mainQueue;
@end

@implementation HTTPClient

@synthesize injector = _injector;

+(BSInitializer *)bsInitializer {
    return [BSInitializer initializerWithClass:self
                                      selector:@selector(initWithNSURLSession:mainQueue:)
                                  argumentKeys:[NSURLSession class], [NSOperationQueue class], nil];
}

-(instancetype)initWithNSURLSession:(NSURLSession *)session mainQueue:(NSOperationQueue*)mainQueue {
    if (self = [self init]) {
        self.session = session;
        self.mainQueue = mainQueue;
    }

    return self;
}

-(KSPromise *)fetchUrl:(NSString *)urlString {
    KSDeferred *deferred = [self deferred];
    __weak typeof(self) weakSelf = self;
    [[self.session dataTaskWithURL:[NSURL URLWithString:urlString] completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
        NSLog(@"================> http client: %@", weakSelf);

        [weakSelf.mainQueue addOperationWithBlock:^{
            [weakSelf resolveOrReject:deferred
                                 data:data
                             response:response
                                error:error
                       expectedStatus:200];
        }];
    }] resume];

    return deferred.promise;
}
@end