Manage PayPal QRC payments

The following describes how to manage payment operations using PayPal QRC. If you add PayPal QRC payments for your users in the US, you can provide them options to use either PayPal QRC or Venmo QRC when acquiring payments.

• The SDK initialisation is completed. See Initialisation.
• Presenting Settings view is completed. See Present Settings view.

To accept PayPal QRC payments with the SDK integration, enable the payment method after initialising the SDK.

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[[iZettleSDK shared] setEnabledAlternativePaymentMethod:@[@(IZSDKAlternativePaymentMethodPayPalQRC)]];

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let enabledAPMs = [NSNumber(value: IZSDKAlternativePaymentMethod.payPalQRC.rawValue)]
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iZettleSDK.shared().setEnabledAlternativePaymentMethods(enabledAPMs)

When using PayPal QRC payments, merchants located in the US can choose to use either PayPal or Venmo when acquiring payments.

To initialise the SDK to use both PayPal and Venmo QRC types, you need to specify an NSNumber for the setEnabledAlternativePaymentMethod function. Passing in "0" enables both PayPal and Venmo QRC, since the Venmo QRC is a subtype of PayPal QRC.

After the PayPal QRC payment method is enabled, a PayPal QRC screen will be added in the SDK Settings view. The screen is for your users to activate the payment method.

By default, if your integration is used in the UK or Germany, it's not activated for your integration users. Make sure that you remind them to activate PayPal QRC payment in the PayPal QRC screen before they use it.

Note: If it's used in the US, it's activated for the users by default.

The following example describes how to perform a payment with an amount and a reference.

• amount: The amount to be charged in the logged-in user's currency.
• reference: Non-nullable payment reference. Used to identify a Zettle payment when retrieving payment information at a later time, or performing a refund. Max length 128.

Note: Make sure that you securely store the reference. If the reference is lost, you will not able to do the refund or request payment information.

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- (void)chargePayPalQRCWithAmount:(NSDecimalNumber *)amount
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                        reference:(NSString *)reference
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                        appearance:(IZSDKPayPalQRCAppearance)appearance
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      presentedFromViewController:(UIViewController *)viewController
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                       completion:(IZSDKPayPalQRCCompletion)completion

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func chargePayPalQRC(amount: NSDecimalNumber,
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                         reference: String,
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                         appearance: IZSDKPayPalQRCAppearance,
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                         presentFrom viewController: UIViewController,
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                         completion: IZSDKPayPalQRCCompletion)

Note: When using PayPal QRC payments, merchants located in the US will have an option to start the payment using PayPal or Venmo UI appearances. This is because consumers can scan the QR code using either the Venmo or PayPal applications. In the payment result, you can extract which payment method was used by the consumer.

See IZSDKPayPalQRCCompletion.

Refund an amount from a PayPal QRC payment with a given reference.

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- (void)refundPayPalQRCAmount:(nullable NSDecimalNumber *)amount
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       ofPaymentWithReference:(NSString *)paymentReference
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              refundReference:(NSString *)refundReference
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    presentFromViewController:(UIViewController *)viewController
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                   completion:(IZSDKPayPalQRCCompletion)completion

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func refundPayPalQRC(amount: NSDecimalNumber?,
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                         ofPayment paymentReference: String,
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                         withRefundReference refundReference: String,
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                         presentFrom viewController: UIViewController,
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                         completion: IZSDKPayPalQRCCompletion)

• amount (optional): The amount to be refunded from the payment (passing nil will refund the full amount of the original payment).
• paymentReference: The reference of the payment that is to be refunded.
• refundReference: The reference of the refund. Max length 128.

Query the Zettle SDK for payment information for a PayPal QRC payment with a given reference.

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- (void)retrievePayPalQRCPaymentInfoForReference:(NSString *)reference
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                       presentFromViewController:(UIViewController *)viewController
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                                      completion:(IZSDKPayPalQRCCompletion)completion

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func retrievePayPalQRCPaymentInfo(for reference: String,
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                                      presentFrom viewController: UIViewController,
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                                      completion: IZSDKPayPalQRCCompletion)

The completion callback will be called when an operation is completed, canceled, or failed.

Successful completion of the payment will provide IZSDKPayPalQRCPaymentInfo with the following details about the transaction.

The enumeration for the QRC type is in the completion object IZSDKPayPalQRCType. All enumerations must be backed up with the integers in Objective-C. This means the type you get back from the completion handler is not a standard string of "PayPal" or "Venmo". Therefore you need to implement logic that checks the QRC type and displays whether it was "PayPal" or "Venmo".

When integrating with the SDK, you can test your integration in developer mode for PayPal QRC and Venmo QRC without a Zettle merchant account and real transactions.

1. If developer mode is not enabled, enable it by calling the following function in your integration project:

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   [[iZettleSDK shared] startWithAuthorizationProvider:authorizationProvider
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                                   enableDeveloperMode:true];

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   iZettleSDK.shared().start(with: authenticationProvider,
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                             enableDeveloperMode: true)

2. Launch the payment flow.

3. Check the responses.

   The example shows test case "Successfully paid with PayPal".

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   {
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       "paypalTransactionId" : "5RD45483J23141148",
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       "referenceNumber" : "JR2QTMYU5E",
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       "amount" : 25.0, // amount passed to the flow
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       "type" : IZSDKPayPalQRCTypePayPal,
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       "transactionId" : "3702b69c-5b53-11ed-bb53-e32a574ae480"
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   }

4. Launch the refund flow.

5. Check the responses.

   The example shows test case "Successful PayPal refund".

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   {
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       "paypalTransactionId" : "6VE826082H938612A",
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       "referenceNumber" : "JR2QTMYU5E",
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       "amount" : 25.0, // if no amount passed to refund, then `-11.0` is returned, otherwise - the negative amount passed to the refund flow
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       "type" : IZSDKPayPalQRCTypePayPal,
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       "transactionId" : "c1ee606d-5b54-11ed-8c7e-9873cea95625"
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   }

Failure in completing a payment will generate an NSError. The error message describes the failure, and can contain any of the reasons listed in the following.

• Manage card payments