Purchasing

Purchase a product (given a product id)

• Atomic: to be used when the content is delivered immediately.

SwiftyStoreKit.purchaseProduct("com.musevisions.SwiftyStoreKit.Purchase1", quantity: 1, atomically: true) { result in
    switch result {
    case .success(let purchase):
        print("Purchase Success: \(purchase.productId)")
    case .error(let error):
        switch error.code {
        case .unknown: print("Unknown error. Please contact support")
        case .clientInvalid: print("Not allowed to make the payment")
        case .paymentCancelled: break
        case .paymentInvalid: print("The purchase identifier was invalid")
        case .paymentNotAllowed: print("The device is not allowed to make the payment")
        case .storeProductNotAvailable: print("The product is not available in the current storefront")
        case .cloudServicePermissionDenied: print("Access to cloud service information is not allowed")
        case .cloudServiceNetworkConnectionFailed: print("Could not connect to the network")
        case .cloudServiceRevoked: print("User has revoked permission to use this cloud service")
        default: print((error as NSError).localizedDescription)
        }
    }
}

• Non-Atomic: to be used when the content is delivered by the server.

SwiftyStoreKit.purchaseProduct("com.musevisions.SwiftyStoreKit.Purchase1", quantity: 1, atomically: false) { result in
    switch result {
    case .success(let product):
        // fetch content from your server, then:
        if product.needsFinishTransaction {
            SwiftyStoreKit.finishTransaction(product.transaction)
        }
        print("Purchase Success: \(product.productId)")
    case .error(let error):
        switch error.code {
        case .unknown: print("Unknown error. Please contact support")
        case .clientInvalid: print("Not allowed to make the payment")
        case .paymentCancelled: break
        case .paymentInvalid: print("The purchase identifier was invalid")
        case .paymentNotAllowed: print("The device is not allowed to make the payment")
        case .storeProductNotAvailable: print("The product is not available in the current storefront")
        case .cloudServicePermissionDenied: print("Access to cloud service information is not allowed")
        case .cloudServiceNetworkConnectionFailed: print("Could not connect to the network")
        case .cloudServiceRevoked: print("User has revoked permission to use this cloud service")
        default: print((error as NSError).localizedDescription)
        }
    }
}

Purchase a Product (given a SKProduct)

This is a variant of the method above that can be used to purchase a product when the corresponding SKProduct has already been retrieved with retrieveProductsInfo:

SwiftyStoreKit.retrieveProductsInfo(["com.musevisions.SwiftyStoreKit.Purchase1"]) { result in
    if let product = result.retrievedProducts.first {
        SwiftyStoreKit.purchaseProduct(product, quantity: 1, atomically: true) { result in
            // handle result (same as above)
        }
    }
}

Using this purchaseProduct method guarantees that only one network call is made to StoreKit to perform the purchase, as opposed to one call to get the product and another to perform the purchase.