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Add support for apple pay coupons. #3280

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Add support for apple pay coupons. #3280

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50 changes: 48 additions & 2 deletions StripeApplePay/StripeApplePay/Source/ApplePayContext/STPApplePayContext.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,15 @@ import PassKit
handler: @escaping (_ update: PKPaymentRequestShippingContactUpdate) -> Void
)

/// Called when the user has entered a coupon code. You should validate the
/// coupon and must invoke the completion block with a PKPaymentRequestCouponCodeUpdate object.
@available(iOS 15.0, *)
@objc optional func applePayContext(
_ context: STPApplePayContext,
didChangeCouponCode couponCode: String,
handler completion: @escaping (PKPaymentRequestCouponCodeUpdate) -> Void
)

/// Optionally configure additional information on your PKPaymentAuthorizationResult.
/// This closure will be called after the PaymentIntent or SetupIntent is confirmed, but before
/// the Apple Pay sheet has been closed.
Expand Down Expand Up @@ -305,11 +314,32 @@ public class STPApplePayContext: NSObject, PKPaymentAuthorizationControllerDeleg
didSelectShippingContact:
handler:
))

return [
var delegateToAppleDelegateMapping = [
pk_didSelectShippingMethod: stp_didSelectShippingMethod,
pk_didSelectShippingContact: stp_didSelectShippingContact,
]

if #available(iOS 15.0, *) {
// On iOS 15+, Apple Pay can now accept coupon codes directly, so we need to broker the
// new coupon delegate functions between the host app and Apple Pay.
let pk_didChangeCouponCode = #selector(
PKPaymentAuthorizationControllerDelegate.paymentAuthorizationController(
_:
didChangeCouponCode:
handler:
))
let stp_didChangeCouponCode = #selector(
_stpinternal_STPApplePayContextDelegateBase.applePayContext(
_:
didChangeCouponCode:
handler:
))

delegateToAppleDelegateMapping[pk_didChangeCouponCode] = stp_didChangeCouponCode
}

return delegateToAppleDelegateMapping
}

func _end() {
Expand Down Expand Up @@ -427,6 +457,22 @@ public class STPApplePayContext: NSObject, PKPaymentAuthorizationControllerDeleg
}
}

/// :nodoc:
@available(iOS 15.0, *)
@objc
public func paymentAuthorizationController(
_ controller: PKPaymentAuthorizationController,
didChangeCouponCode couponCode: String,
handler completion: @escaping (PKPaymentRequestCouponCodeUpdate) -> Void) {

if delegate?.responds(
to: #selector(
_stpinternal_STPApplePayContextDelegateBase.applePayContext(_:didChangeCouponCode:handler:))
) ?? false {
delegate?.applePayContext?(self, didChangeCouponCode: couponCode, handler: completion)
}
}

/// :nodoc:
@objc public func paymentAuthorizationControllerDidFinish(
_ controller: PKPaymentAuthorizationController
Expand Down