BB Standard iOS App API Wrapper. Direct questions to Brayden.

BBStandardAPI.h

@class MBProgressHUD;

typedef NS_ENUM(NSUInteger, kAPIMethod) {
    GET,
    POST,
    PUT,
    DELETE
};

typedef NS_ENUM(NSUInteger, kAPIEndpoint) {
    kEndpointCustom,                    // {path}                               GET / POST / PUT / DELETE
    kEndpointCategories,                //  /categories                         GET /      /     /
    kEndpointSubcategory,               //  /categories/{id}                    GET /      /     /
    kEndpointCategoryProducts,          //  /categories/{id}/products           GET /      /     /
    kEndpointProduct,                   //  /products/{id}                      GET /      /     /
    kEndpointProductSearch,             //  /products{?q}                       GET /      /     /
    kEndpointCart,                      //  /checkout/cart                      GET / POST / PUT / DELETE
    kEndpointPromo,                     //  /checkout/promo                         / POST /     /
    kEndpointCheckoutPaypal,            //  /checkout/paypal                        / POST /     /
    kEndpointCheckoutGoogle,            //  /checkout/google                        / POST /     /
    kEndpointCheckoutCC,                //  /checkout/cc                            / POST /     /
    kEndpointCheckoutConfirm,           //  /checkout/confirm                   GET / POST /     /
    kEndpointCheckoutReceipt,           //  /checkout/receipt                   GET /      /     /
    kEndpointCheckoutShipping,          //  /checkout/shipping_methods          GET /      / PUT /
    kEndpointCheckoutDestinations,      //  /checkout/destinations              GET /      / PUT /
    kEndpointSessionNew,                //  /session/new                            / POST /     /
    kEndpointSessionDestroy,            //  /session/destroy                        /      /     / DELETE
    kEndpointSessionStatus,             //  /session/status                     GET /      /     /
    kEndpointAccountNew,                //  /account/new                            / POST /     /
    kEndpointAccountOrders,             //  /account/orders                     GET /      /     /
    kEndpointAccountOrderHistory,       //  /account/orders/{id}                GET /      /     /
    kEndpointAccountWishlist,           //  /account/wishlist                   GET / POST / PUT / DELETE
    kEndpointShoprunnerNew,             //  /shoprunner/new                         / POST /     /
    kEndpointShoprunnerDestroy,         //  /shoprunner/destroy                     /      /     / DELETE
    kEndpointAccountLoyalty,            //  /account/loyalty/show               GET /      /     /
    kEndpointAccountLoyaltyStatements,  //  /account/loyalty/statements         GET /      /     /
    kEndpointAccountLoyaltyTransaction, //  /account/loyalty/transactions       GET /      /     /
    kEndpointGiftcards,                 //  /giftcards                          GET /      /     /
    kEndpointCheckoutGiftcard,          //  /checkout/giftcard                      / POST /     /
    kEndpointAccountAddressBilling,     //  /account/addresses/billing          GET / POST / PUT / DELETE
    kEndpointAccountAddressShipping,    //  /account/addresses/shipping         GET / POST / PUT / DELETE
    kEndpointAccountCredits,            //  /account/credits                    GET /      /     /
};

@interface BBStandardAPI : NSObject

@property (nonatomic, strong) NSOperationQueue *queue;
@property (nonatomic, strong) NSString *baseHost;
@property (nonatomic, strong) NSArray *categories;

+ (BBStandardAPI *)sharedManager;
+ (void)queryAPIEndpoint:(kAPIEndpoint)endpoint withMethod:(kAPIMethod)method options:(NSDictionary *)options andParameters:(NSArray *)params completion:(void (^)(NSDictionary *dictionary, NSError *error, NSInteger statusCode))completion;

@end

BBStandardAPI.m

#import "BBStandardAPI.h"
#import "MBProgressHUD.h"

@implementation BBStandardAPI


#pragma mark - Singleton -

+ (BBStandardAPI *)sharedManager {
	static BBStandardAPI *sharedManager;
	static dispatch_once_t token = 0;
	
	dispatch_once(&token, ^{
		sharedManager = [[BBStandardAPI alloc] init];
	});
    
	return sharedManager;
}

- (id)init {
    if (self = [super init]) {
        self.queue = [[NSOperationQueue alloc] init];
        self.queue.maxConcurrentOperationCount = NSOperationQueueDefaultMaxConcurrentOperationCount;
        self.queue.name = @"com.brandingbrand.api";
    }
    
    return self;
}



#pragma mark - Wrapper Methods -

+ (NSMutableURLRequest *)newRequestWithMethod:(kAPIMethod)method endpoint:(NSString *)endpoint andOptions:(NSDictionary *)options {
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@%@", [[BBStandardAPI sharedManager] baseHost], endpoint]]];
    
    if (method == GET)         [request setHTTPMethod:@"GET"];
    else if (method == POST)   [request setHTTPMethod:@"POST"];
    else if (method == PUT)    [request setHTTPMethod:@"PUT"];
    else if (method == DELETE) [request setHTTPMethod:@"DELETE"];
    
    if (options) {
        NSError *err;
        NSData *data = [NSJSONSerialization dataWithJSONObject:options options:NSJSONWritingPrettyPrinted error:&err];
        [request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
        [request setValue:[NSString stringWithFormat:@"%d", [data length]] forHTTPHeaderField:@"Content-Length"];
        [request setHTTPBody:data];
    } else {
        [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
        [request setValue:@"XMLHttpRequest" forHTTPHeaderField:@"X-Requested-With"];
    }
    
    [request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
    [request setTimeoutInterval:20.0f];
    
    return request;
}

+ (NSString *)getEndpoint:(kAPIEndpoint)endpoint {
    if (endpoint == kEndpointCustom)                                 return @"%@";
    else if (endpoint == kEndpointCategories)                        return @"/categories";
    else if (endpoint == kEndpointSubcategory)                       return @"/categories/%@";
    else if (endpoint == kEndpointCategoryProducts)                  return @"/categories/%@/products";
    else if (endpoint == kEndpointProduct)                           return @"/products/%@";
    else if (endpoint == kEndpointProductSearch)                     return @"/products?%@";
    else if (endpoint == kEndpointCart)                              return @"/checkout/cart";
    else if (endpoint == kEndpointPromo)                             return @"/checkout/promo";
    else if (endpoint == kEndpointCheckoutPaypal)                    return @"/checkout/paypal";
    else if (endpoint == kEndpointCheckoutGoogle)                    return @"/checkout/google";
    else if (endpoint == kEndpointCheckoutCC)                        return @"/checkout/cc";
    else if (endpoint == kEndpointCheckoutConfirm)                   return @"/checkout/confirm";
    else if (endpoint == kEndpointCheckoutReceipt)                   return @"/checkout/receipt";
    else if (endpoint == kEndpointCheckoutShipping)                  return @"/checkout/shipping_methods";
    else if (endpoint == kEndpointCheckoutDestinations)              return @"/checkout/destinations";
    else if (endpoint == kEndpointSessionNew)                        return @"/session/new";
    else if (endpoint == kEndpointSessionDestroy)                    return @"/session/destroy";
    else if (endpoint == kEndpointSessionStatus)                     return @"/session/status";
    else if (endpoint == kEndpointAccountNew)                        return @"/account/new";
    else if (endpoint == kEndpointAccountOrders)                     return @"/account/orders";
    else if (endpoint == kEndpointAccountOrderHistory)               return @"/account/order/%@";
    else if (endpoint == kEndpointAccountWishlist)                   return @"/account/wishlist";
    else if (endpoint == kEndpointShoprunnerNew)                     return @"/shoprunner/new";
    else if (endpoint == kEndpointShoprunnerDestroy)                 return @"/shoprunner/destroy";
    else if (endpoint == kEndpointAccountLoyalty)                    return @"/account/loyalty/show";
    else if (endpoint == kEndpointAccountLoyaltyStatements)          return @"/account/loyalty/statements";
    else if (endpoint == kEndpointAccountLoyaltyTransaction)         return @"/account/loyalty/transactions";
    else if (endpoint == kEndpointGiftcards)                         return @"/giftcards";
    else if (endpoint == kEndpointCheckoutGiftcard)                  return @"/checkout/giftcard";
    else if (endpoint == kEndpointAccountAddressBilling)             return @"/account/addresses/billing";
    else if (endpoint == kEndpointAccountAddressShipping)            return @"/account/addresses/shipping";
    else if (endpoint == kEndpointAccountCredits)                    return @"/account/credits";
    
    return @"";
}

+ (void)queryAPIEndpoint:(kAPIEndpoint)endpoint withMethod:(kAPIMethod)method options:(NSDictionary *)options andParameters:(NSArray *)params completion:(void (^)(NSDictionary *dictionary, NSError *error, NSInteger statusCode))completion {
    NSMutableString *parameter = [[NSMutableString alloc] initWithString:[BBStandardAPI getEndpoint:endpoint]];
    NSArray *parts = [parameter componentsSeparatedByString:@"%@"];
    if (parts.count > 1) {
        parameter = [@"" mutableCopy];
        for (int index = 0; index < parts.count - 1; index++) {
            [parameter appendFormat:@"%@%@", parts[index], params[index]];
        }
        
        [parameter appendFormat:@"%@", parts[parts.count - 1]];
    }
    
    UIView *view = [[UIApplication sharedApplication] keyWindow];
    if (view) {
        [MBProgressHUD showHUDAddedTo:view animated:YES];
    }
    
    [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];
    [NSURLConnection sendAsynchronousRequest:[BBStandardAPI newRequestWithMethod:method endpoint:parameter andOptions:options] queue:[[BBStandardAPI sharedManager] queue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
        if (data != nil) {            
            NSError *err;
            NSDictionary *result = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&err];
            dispatch_async(dispatch_get_main_queue(), ^{
                completion(result, nil, [(NSHTTPURLResponse*)response statusCode]);
            });
        } else {
            NSLog(@"-- BBStandardAPI -- Error: %@", error.description);
        }
        
        dispatch_async(dispatch_get_main_queue(), ^{
            if (view != nil) {
                [MBProgressHUD hideHUDForView:view animated:YES];
            }
            
            [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
        });
    }];
}

@end