Checkout - iOS - Mangopay docs

This guide helps you get started with the Checkout SDK on iOS.

Prerequisites

A ClientId and an API key – if you don’t have these, contact Sales to get access to the Mangopay Hub
A User and their associated Wallet to complete the pay-in
A card to register or payment method setup (see Testing - Payment methods for testing information)

For iOS:

iOS 13+
Xcode 12.2
Swift 5.3+

Installation

Mangopay Checkout

Swift Package Manager (recommended)

Open your Xcode project and go to File > Swift Packages > Add Package Dependency
In the prompted dialog, enter the repository URL https://github.com/Mangopay/mangopay-ios-sdk
Select the checkout-ios-sdk package by checking the corresponding checkbox
Follow the on-screen instructions to complete the installation

Creating a Card Registration

In your backend, create the Card Registration via the Mangopay API, using the Id of the user as the UserId .

You must also define the currency and type of the card at this stage.

{
    "Tag": "Created with the Mangopay Checkout SDK",
    "UserId": "142036728",
    "CardType": "CB_VISA_MASTERCARD",
    "Currency": "EUR"
}

API response

{
    "Id": "193020188",
    "Tag": ,
    "CreationDate": 1686147148,
    "UserId": "193020185",
    "AccessKey": "1X0m87dmM2LiwFgxPLBJ",
    "PreregistrationData": "XBDYiG8w9PrylPS01KmupZunmK2QRHKIC-yUF6il3aIpAnKba1TGkR9VJe5lHjHt2ddFLVXdicolcUIkv_kKEA",
    "RegistrationData": ,
    "CardId": ,
    "CardType": "CB_VISA_MASTERCARD",
    "CardRegistrationURL": "https://pci.sandbox.mangopay.com/api/mangopay/vault/tokenize/eyJjbGllbnQiOiJjbGllbnRJZCIsInRva2VuIjoidW5xaXVlVG9rZW4ifQ==",
    "ResultCode": ,
    "ResultMessage": ,
    "Currency": "EUR",
    "Status": "CREATED"
}

The data obtained in the response will be used in the options of the card payment method configured below.

Initializing the SDK

Initialize the SDK with your ClientId and select your environment (Sandbox or Production).

Initialization

MangopayCheckoutSDK.initialize(clientId: "<client_id>", environment: .sandbox)

Initialization parameters

Property	Type	Description
`clientId`	String	The unique identifier associated with the Mangopay API key, giving access to the Mangopay API.
`environment`	Environment	The Mangopay environment. Allowed values: SANDBOX, PRODUCTION Default values: SANDBOX

Configuring the payment sheet

To configure the Checkout SDK’s payment sheet:

1. Create a payment sheet instance in your view controller

Payment sheet instance

var checkout: MGPPaymentSheet!

2. Create callbacks to handle the payment

Payment handler

	let callback = CallBack(
	     onPaymentMethodSelected: { paymentMethod in
	     },
	     onTokenizationCompleted: { cardRegistration in
	     }, onPaymentCompleted: {
	     }, onCancelled: {
	     },
	     onError: { error in
	     },
	     onSheetDismissed: {
	     }
	 )

3. Create the paymentMethodConfig object

paymentMethodConfig

let paymentConfig = PaymentMethodConfig(cardReg: cardRegObj)

4. Initialize the payment sheet

Payment sheet initialization

checkout = MGPPaymentSheet.create(
       client: mgpClient,
       paymentMethodConfig: paymentConfig,
       handlePaymentFlow: false,
       branding: PaymentFormStyle(),
       callback: callback
   )

5. Present the payment sheet

Payment sheet presentation

checkout.present(in: self)

paymentMethodConfig parameters

Property	Type	Description
`card`	MGPCardInfo	Information about the card used for the payment.
`cardReg`	MGPCardRegistration	Information obtained from the Mangopay Card Registration object.
`applePayConfig`	MangopayApplePayConfig	The configuration options for Apple Pay.

Using Card Element

Card Element is a ready-made component that allows you to create your own card payment experience and tokenize card payment details. With Card Element, you can incorporate a custom pay button and have control over the tokenization process.

When using Card Element, you still benefit from card data validation, and the ability to customize the payment form.

To use Card Element, proceed as follows:

1. Create an instance of the payment form

Payment form

lazy var elementForm: MGPPaymentForm = {
        let form = MGPPaymentForm(
            paymentFormStyle: PaymentFormStyle(),
            supportedCardBrands: [.visa, .mastercard, .maestro]
        )
        return form
    }()

MGPPaymentForm

Property	Type	Description
`paymentFormStyle`	PaymentFormStyle	Property for styling the payment form.
`supportedCardBrands`	Array	The card networks displayed to the user. Allowed values: visa, mastercard, maestro

2. Add payment form to your parent view and add the appropriate layout constraints

Payment form to parent view

self.view.addSubview(elementForm)

3. Create Card Registration object as described above

4. Call tokenizeCard() on user action

The example below is for the user clicking on the pay button.

Example - tokenizeCard

	MangopayCoreiOS.tokenizeCard(
	    form: elementForm,
	    with: cardRegistration,
	    presentIn: <presenting_view_controller>
	) { respoonse, error in
	        
      if let res = respoonse {
		    //do something
      }
      
      if let err = error {
          //do something
      }
  }

MangopayCoreiOS.tokenizeCard()

Property	Type	Description
`form`	`MangopayCheckoutForm`	The Mangopay payment form.
`with`	`MGPCardRegistration`	The Mangopay API Card Registration object.
`presentIn`	`UIViewController`
`callBack`	`typealias MangoPayTokenizedCallBack = ((TokenizedCardData?, MGPError?) -> ())`	A callback that handles events of the payment form tokenization process.

TokenizedCardData

Property	Type	Description
`card`	`CardRegistration`	The tokenized Card Registration object with `CardId`.
`fraud`	`FraudData`	Data regarding fraud risk management.

FraudData

Property	Type	Description
`provider`	String	Fraud risk management data provider: Nethone.
`profilingAttemptReference`	String	Profiling attempt reference provided by Nethone.

Managing cards

You can use the following endpoints to manage cards:

View a Card provides key information about the card, including its Fingerprint which can be used as an anti-fraud tool
Deactivate a Card allows you to irreversibly set the card as inactive

Warning – End user’s approval needed to save card details

Under no circumstances should card information be kept without the end user’s approval.
If you don’t have the end user’s approval, you need to deactivate the card systematically after use in your implementation.

Requesting card pay-ins

You can use a registered card (CardId) for pay-ins with the following objects:

The Direct Card PayIn object, for one-shot card payments
The Recurring PayIn Registration object, for recurring card payments
The Preauthorization object, for 7-day preauthorized card payments
The Deposit Preauthorization object, for 30-day preauthorized card payments

Note - 3DS redirection required when requesting card payments

When you make a card payment request, you need to be ready to handle 3DS redirection.

Handling 3DS redirection

When requesting a payment or other card authorization, you need to be able to handle 3DS redirection if it is required by the issuer. This is indicated by the SecureModeNeeded in the API response, and the SecureModeRedirectURL provides the redirection URL.

The Checkout SDK’s 3DS helper allows you to redirect users to authenticate securely and seamlessly.

Note - Example project for 3DS handling

You can find an example of handling 3DS redirect flow using our SDK in the HandleThreedsActivity.tk file from the Mangopay iOS SDK examples.

let _3dsVC = ThreeDSController(
      secureModeReturnURL: <"secure_mode_url">,
      secureModeRedirectURL: "secure_mode_redirect_url",
			transactionType: .cardDirect,
      onComplete: { result in
          switch result.status {
          case .SUCCEEDED:
							//do something
          case .FAILED:
							//do something
          }
      }) { error in
      }

viewController.present(_3dsVC)

3DS helper parameters

Property	Type	Description
`secureModeRedirectURL`	String	The URL to which users are redirected to authenticate with 3DS (if required).
`secureModeReturnURL`	String	The URL to which users are returned after the payment, whether a 3DS challenge was triggered or not and whatever the transaction outcome.
`transactionType`	_3DSTransactionType	The type of the authorization request.
`onComplete`	(_3DSResult) -> ()	Callback to handle successful or failed authentication requests.
`onError`	(Error?) -> ()	Callback to handle 3DS redirection errors.

_3DSTransactionType

Property	Description
`cardDirect`	A Direct Card PayIn.
`preauthorized`	A card Preauthorization.
`cardValidated`	A Card Validation.

_3DSResult

Property	Type	Description
`secureModeRedirectURL`	String	The URL to which users are redirected to authenticate with 3DS (if required).
`secureModeReturnURL`	String	The URL to which users are returned after the payment, whether a 3DS challenge was triggered or not and whatever the transaction outcome.
`transactionType`	_3DSTransactionType	The type of the authorization request.
`onComplete`	(_3DSResult) -> ()	Callback to handle successful or failed authentication requests.
`onError`	(Error?) -> ()	Callback to handle 3DS redirection errors.

Verifying the payment result

Best practice - Check payment result from backend

It is highly recommended that you confirm the transaction result from your backend using the API endpoint.

Presenting the payment result

Payment result

Checkout Screen  -> Payment sheet -> Confirmation screen 

checkout = MGPPaymentSheet.create(
           paymentMethodConfig: paymentConfig,
           branding: PaymentFormStyle(),
           callback: CallBack(
               onTokenizationCompleted: { cardRegistration in
									//dismiss the payment sheet
									 self.checkout.teardown()
									//present the confirmation screen
               },
               onError: { error in
               },
               onSheetDismissed: {
               }
           )
       )

       checkout.present(in: self)

Offering Apple Pay

Note - Apple Pay integration required

Offering Apple Pay requires additional setup by the platform, including certification and integration. For more information, see the How to process an Apple Pay payment tutorial.

To offer the Apple Pay payment method, include the MangopayApplePayConfig object during initialization. This displays the Apple Pay button and handle Apple Pay payment events.

Apple Pay configuration

let applePayConfig = MGPApplePayConfig(
          amount: 1,
          delegate: self,
          merchantIdentifier: "<merchant_id>",
          merchantCapabilities: .capability3DS,
          currencyCode: "<currency_code",
          countryCode: "<country_code",
          supportedNetworks: [
              .masterCard,
              .visa
          ]
       )

let paymentConfig = PaymentMethodConfig(cardReg: cardRegObj, applePayConfig: applePayConfig)

checkout = MGPPaymentSheet.create(
       client: mgpClient,
       paymentMethodConfig: paymentConfig,
       branding: PaymentFormStyle(),
       callback: callback
   )

Configuration parameters

Property	Type	Description
`amount`	Double	The amount being paid.
`delegate`	MGPApplePayHandlerDelegate	The event handler.
`merchantIdentifier`	String	Your platform’s Apple Pay Merchant ID.
`merchantCapabilities`	PKMerchantCapability	Information about the card types and authentication protocols you support (see Apple Pay documentation).
`currencyCode`	String	The three-letter ISO 4217 code (EUR, GBP, etc) of a supported currency (depends on feature, contract, and activation settings).
`countryCode`	String	The platform’s two-letter ISO 3166 country code.
`supportedNetworks`	Array	The card networks supported by Mangopay: VISA and MASTERCARD. Allowed values: VISA, MASTERCARD

Optional parameters

Property	Type	Description
`requiredBillingContactFields`	Array	The billing information to fulfill the order.
`requiredShippingContactFields`	Set	The shipping information to fulfill the order.
`billingContact`	PKContact	The billing contact information for the user.
`shippingContact`	PKContact	The shipping contact information for the user.
`shippingType`	PKShippingType
`shippingMethods`	Array
`applicationData`	Data

Handling the Apple Pay result

extension ViewController: MGPApplePayHandlerDelegate {

    func applePayContext(didSelect shippingMethod: PKShippingMethod, handler: @escaping (PKPaymentRequestShippingMethodUpdate) -> Void) {
    }

    func applePayContext(didCompleteWith status: MangoPayApplePay.PaymentStatus, error: Error?) {
    }
}

Requesting Apple Pay pay-in

To request the payment, use the Create a Apple Pay PayIn endpoint and include the Apple Pay PaymentData.

Branding

You can customize the appearance of the payment sheet using the PaymentFormStyle object.

Example - Branding

let branding = PaymentFormStyle(
            font: .systemFont(ofSize: 12),
            borderType: .round,
            backgroundColor: .white,
            textColor: .gray,
            placeHolderColor: .darkGray,
            borderColor: .black,
            borderFocusedColor: .blue,
            errorColor: .red,
            checkoutButtonTextColor: .white,
            checkoutButtonBackgroundColor: .black,
            checkoutButtonDisabledBackgroundColor: .gray,
            checkoutButtonText: "Checkout",
            applePayButtonType: .plain,
            applePayButtonStyle: .black,
            applePayButtonCornerRadius: 8
         )

....

checkout = MGPPaymentSheet.create(
       client: mgpClient,
       paymentMethodConfig: paymentConfig,
       branding: branding,
       callback: callback
   )

Property	Type	Description
`font`	UIFont	The font of the text fields and labels.
`borderType`	BorderType	The border type of the text fields. Allowed values: `square`, `round`
`textColor`	UIColor	Color of the text in the text fields.
`placeHolderColor`	UIColor	The color of the placeholder text in the text fields.
`borderColor`	UIColor	The color of the text field borders.
`borderFocusedColor`	UIColor	The color of the text field borders when highlighted.
`errorColor`	UIColor	The color of the error labels.
`checkoutButtonTextColor`	UIColor	The color of the text on the confirmation button.
`checkoutButtonBackgroundColor`	UIColor	The color of the background of the confirmation button.
`checkoutButtonDisabledBackgroundColor`	UIColor	The color of the background of the confirmation button when disabled.
`checkoutButtonText`	String	The text of the confirmation button.
`checkoutTitleText`	String	The text of the payment form title.
`applePayButtonType`	PKPaymentButtonType	The Apple Pay button type.
`applePayButtonStyle`	PKPaymentButtonStyle	The Apple Pay button style.
`applePayButtonCornerRadius`	CGFloat	The corner radius of the Apple Pay button.

Getting started

Integration options

Resources

Useful links

Checkout - iOS

Installation

Swift Package Manager (recommended)

Creating a Card Registration

Initializing the SDK

Initialization parameters

Configuring the payment sheet

1. Create a payment sheet instance in your view controller

2. Create callbacks to handle the payment

3. Create the paymentMethodConfig object

4. Initialize the payment sheet

5. Present the payment sheet

paymentMethodConfig parameters

Using Card Element

1. Create an instance of the payment form

MGPPaymentForm

2. Add payment form to your parent view and add the appropriate layout constraints

3. Create Card Registration object as described above

4. Call tokenizeCard() on user action

MangopayCoreiOS.tokenizeCard()

TokenizedCardData

FraudData

Managing cards

Requesting card pay-ins

Handling 3DS redirection

3DS helper parameters

_3DSTransactionType

_3DSResult

Verifying the payment result

Presenting the payment result

Offering Apple Pay

Configuration parameters

Optional parameters

Handling the Apple Pay result

Requesting Apple Pay pay-in

Branding

Getting started

Integration options

Resources

Useful links

​Installation

​Swift Package Manager (recommended)

​Creating a Card Registration

​Initializing the SDK

​Initialization parameters

​Configuring the payment sheet

​1. Create a payment sheet instance in your view controller

​2. Create callbacks to handle the payment

​3. Create the paymentMethodConfig object

​4. Initialize the payment sheet

​5. Present the payment sheet

​paymentMethodConfig parameters

​Using Card Element

​1. Create an instance of the payment form

​MGPPaymentForm

​2. Add payment form to your parent view and add the appropriate layout constraints

​3. Create Card Registration object as described above

​4. Call tokenizeCard() on user action

​MangopayCoreiOS.tokenizeCard()

​TokenizedCardData

​FraudData

​Managing cards

​Requesting card pay-ins

​Handling 3DS redirection

​3DS helper parameters

​_3DSTransactionType

​_3DSResult

​Verifying the payment result

​Presenting the payment result

​Offering Apple Pay

​Configuration parameters

​Optional parameters

​Handling the Apple Pay result

​Requesting Apple Pay pay-in

​Branding

Installation

Swift Package Manager (recommended)

Creating a Card Registration

Initializing the SDK

Initialization parameters

Configuring the payment sheet

1. Create a payment sheet instance in your view controller

2. Create callbacks to handle the payment

3. Create the paymentMethodConfig object

4. Initialize the payment sheet

5. Present the payment sheet

paymentMethodConfig parameters

Using Card Element

1. Create an instance of the payment form

MGPPaymentForm

2. Add payment form to your parent view and add the appropriate layout constraints

3. Create Card Registration object as described above

4. Call tokenizeCard() on user action

MangopayCoreiOS.tokenizeCard()

TokenizedCardData

FraudData

Managing cards

Requesting card pay-ins

Handling 3DS redirection

3DS helper parameters

_3DSTransactionType

_3DSResult

Verifying the payment result

Presenting the payment result

Offering Apple Pay

Configuration parameters

Optional parameters

Handling the Apple Pay result

Requesting Apple Pay pay-in

Branding