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Add UPI prototype (#1415)
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* Add UPI prototype

* Move UPI support to playground

* remove prints

* Update playground for Indian merchants

* Update PaymentSheetTestPlayground.swift

* Add UPI snapshot

* Update PaymentSheetSnapshotTests.swift

* Use CompatibleColor

* respect appearance api in polling vc

* Mark polling VC as internal

* clean up

* Move VPA validation to own file

* update todos

* Update STPIntentAction.swift

* Handle todo

* Localize countdown timer

* Remove post_confirm_handling_pi_status_specs from form spec

* Remove upi next action, update intent directly

* Revert "Remove post_confirm_handling_pi_status_specs from form spec"

This reverts commit 1989a15ba322c1e426595d49b1ecc7b49577f517.

* add back india to playground

* Remove UPI from luxe spec

* Add UPI automated UI tests

* Clean up some white space

* Add STPVPANumberValidatorTest

* PR feedback
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@porter-stripe
porter-stripe authored Sep 19, 2022
1 parent b5d0749 commit ddf04ed
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Showing 30 changed files with 744 additions and 75 deletions.
136 changes: 69 additions & 67 deletions ...PaymentSheet Example/PaymentSheet Example/PaymentSheet Example/Base.lproj/Main.storyboard
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6 changes: 4 additions & 2 deletions ...tSheet Example/PaymentSheet Example/PaymentSheet Example/PaymentSheetTestPlayground.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -52,13 +52,15 @@ class PaymentSheetTestPlayground: UIViewController {
case eur
case aud
case gbp
case inr
}

enum MerchantCountryCode: String, CaseIterable {
case US
case GB
case AU
case FR
case IN
}

enum IntentMode: String, CaseIterable {
Expand Down Expand Up @@ -229,8 +231,8 @@ class PaymentSheetTestPlayground: UIViewController {
super.viewDidLoad()

// Enable experimental payment methods.
// PaymentSheet.supportedPaymentMethods += [.link]

PaymentSheet.supportedPaymentMethods += [.UPI]
checkoutButton.addTarget(self, action: #selector(didTapCheckoutButton), for: .touchUpInside)
checkoutButton.isEnabled = false

Expand Down
20 changes: 20 additions & 0 deletions Example/PaymentSheet Example/PaymentSheetUITest/PaymentSheetSnapshotTests.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -594,6 +594,26 @@ class PaymentSheetSnapshotTests: FBSnapshotTestCase {
presentPaymentSheet(darkMode: false)
verify(paymentSheet.bottomSheetViewController.view!)
}

func testPaymentSheet_LPM_upi_only() {
PaymentSheet.supportedPaymentMethods += [.UPI] // TODO: (porter) Remove when UPI launches

stubSessions(fileMock: .elementsSessionsPaymentMethod_200,
responseCallback: { data in
return self.updatePaymentMethodDetail(data: data, variables: ["<paymentMethods>": "\"upi\"",
"<currency>": "\"inr\""])
})
stubPaymentMethods(stubRequestCallback: nil, fileMock: .saved_payment_methods_200)
stubCustomers()

preparePaymentSheet(currency: "inr",
override_payment_methods_types: ["upi"],
automaticPaymentMethods: false,
useLink: false)
presentPaymentSheet(darkMode: false)
verify(paymentSheet.bottomSheetViewController.view!)

}
private func updatePaymentMethodDetail(data: Data, variables: [String:String]) -> Data {
var template = String(data: data, encoding: .utf8)!
for (templateKey, templateValue) in variables {
Expand Down
50 changes: 50 additions & 0 deletions Example/PaymentSheet Example/PaymentSheetUITest/PaymentSheetUITest.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -459,6 +459,56 @@ class PaymentSheetUITest: XCTestCase {

// no pay button tap because linked account is stubbed/fake in UI test
}

func testUPIPaymentMethod() throws {
loadPlayground(app, settings: [
"customer_mode": "new",
"merchant_country_code": "IN",
"currency": "INR"
])

app.buttons["Checkout (Complete)"].tap()

let payButton = app.buttons["Pay ₹50.99"]
guard let upi = scroll(collectionView: app.collectionViews.firstMatch, toFindCellWithId: "UPI") else {
XCTFail()
return
}
upi.tap()

XCTAssertFalse(payButton.isEnabled)
let vpa = app.textFields["VPA number"]
vpa.tap()
vpa.typeText("payment.success@stripeupi")
vpa.typeText(XCUIKeyboardKey.return.rawValue)

payButton.tap()
}

func testUPIPaymentMethod_invalidVPA() throws {
loadPlayground(app, settings: [
"customer_mode": "new",
"merchant_country_code": "IN",
"currency": "INR"
])

app.buttons["Checkout (Complete)"].tap()

let payButton = app.buttons["Pay ₹50.99"]
guard let upi = scroll(collectionView: app.collectionViews.firstMatch, toFindCellWithId: "UPI") else {
XCTFail()
return
}
upi.tap()

XCTAssertFalse(payButton.isEnabled)
let vpa = app.textFields["VPA number"]
vpa.tap()
vpa.typeText("payment.success")
vpa.typeText(XCUIKeyboardKey.return.rawValue)

XCTAssertFalse(payButton.isEnabled)
}
}

// MARK: - Link
Expand Down
21 changes: 20 additions & 1 deletion Stripe.xcodeproj/project.pbxproj
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Original file line number Diff line number Diff line change
Expand Up @@ -482,6 +482,9 @@
3CD1D3A127C8682E001575BB /* ConnectionsSDKAvailability.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3CD1D3A027C8682D001575BB /* ConnectionsSDKAvailability.swift */; };
448895AF245255D800F7D0C2 /* STPPaymentMethodPrzelewy24ParamsTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 448895AE245255D800F7D0C2 /* STPPaymentMethodPrzelewy24ParamsTests.m */; };
44BDCFDF245A46CC007EE6D5 /* STPPaymentMethodBancontactParamsTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 44BDCFDE245A46CC007EE6D5 /* STPPaymentMethodBancontactParamsTests.m */; };
61078DA428C278B3007C7001 /* PollingViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 61078DA328C278B3007C7001 /* PollingViewController.swift */; };
61078DA828C7C49C007C7001 /* PaymentSheetFormFactory+UPI.swift in Sources */ = {isa = PBXBuildFile; fileRef = 61078DA728C7C49C007C7001 /* PaymentSheetFormFactory+UPI.swift */; };
61078DAA28C7F28F007C7001 /* IntentStatusPoller.swift in Sources */ = {isa = PBXBuildFile; fileRef = 61078DA928C7F28F007C7001 /* IntentStatusPoller.swift */; };
61202525285AD33F00B55402 /* AutoCompleteViewControllerSnapshotTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 61202524285AD33F00B55402 /* AutoCompleteViewControllerSnapshotTests.swift */; };
612A871A285788D400E91CA8 /* MKPlacemark+PaymentSheetTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 612A8719285788D400E91CA8 /* MKPlacemark+PaymentSheetTests.swift */; };
612A871C2857EC5400E91CA8 /* String+AutoComplete.swift in Sources */ = {isa = PBXBuildFile; fileRef = 612A871B2857EC5400E91CA8 /* String+AutoComplete.swift */; };
Expand All @@ -494,7 +497,9 @@
6164582C27E963C800FEAB8E /* [email protected] in Resources */ = {isa = PBXBuildFile; fileRef = 6164582B27E963C800FEAB8E /* [email protected] */; };
6164582E27E964A800FEAB8E /* [email protected] in Resources */ = {isa = PBXBuildFile; fileRef = 6164582D27E964A800FEAB8E /* [email protected] */; };
6169CD1E28512EA300CEAD22 /* AddressSearchResult.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6169CD1D28512EA300CEAD22 /* AddressSearchResult.swift */; };
616B573F28CA42DB0026B4E4 /* [email protected] in Resources */ = {isa = PBXBuildFile; fileRef = 616B573E28CA42DB0026B4E4 /* [email protected] */; };
6171960E2864D3B90040ECE3 /* AutoCompleteConstants.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6171960D2864D3B80040ECE3 /* AutoCompleteConstants.swift */; };
61806A1028CB99F500C33002 /* Date+Distance.swift in Sources */ = {isa = PBXBuildFile; fileRef = 61806A0F28CB99F500C33002 /* Date+Distance.swift */; };
618E787B26EFDD310034A01F /* ServerErrorMapperTest.swift in Sources */ = {isa = PBXBuildFile; fileRef = 618E787A26EFDD310034A01F /* ServerErrorMapperTest.swift */; };
61924D47273999E1003CF2DB /* [email protected] in Resources */ = {isa = PBXBuildFile; fileRef = 61924D45273999E1003CF2DB /* [email protected] */; };
6198555D27DBF4A1003F8951 /* [email protected] in Resources */ = {isa = PBXBuildFile; fileRef = 6198555B27DBF4A1003F8951 /* [email protected] */; };
Expand Down Expand Up @@ -1517,6 +1522,9 @@
448895AE245255D800F7D0C2 /* STPPaymentMethodPrzelewy24ParamsTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = STPPaymentMethodPrzelewy24ParamsTests.m; sourceTree = "<group>"; };
44BDCFDE245A46CC007EE6D5 /* STPPaymentMethodBancontactParamsTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = STPPaymentMethodBancontactParamsTests.m; sourceTree = "<group>"; };
4A0D74F918F6106100966D7B /* Security.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Security.framework; path = System/Library/Frameworks/Security.framework; sourceTree = SDKROOT; };
61078DA328C278B3007C7001 /* PollingViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PollingViewController.swift; sourceTree = "<group>"; };
61078DA728C7C49C007C7001 /* PaymentSheetFormFactory+UPI.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "PaymentSheetFormFactory+UPI.swift"; sourceTree = "<group>"; };
61078DA928C7F28F007C7001 /* IntentStatusPoller.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = IntentStatusPoller.swift; sourceTree = "<group>"; };
61202524285AD33F00B55402 /* AutoCompleteViewControllerSnapshotTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AutoCompleteViewControllerSnapshotTests.swift; sourceTree = "<group>"; };
612A8719285788D400E91CA8 /* MKPlacemark+PaymentSheetTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "MKPlacemark+PaymentSheetTests.swift"; sourceTree = "<group>"; };
612A871B2857EC5400E91CA8 /* String+AutoComplete.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "String+AutoComplete.swift"; sourceTree = "<group>"; };
Expand All @@ -1530,7 +1538,9 @@
6164582D27E964A800FEAB8E /* [email protected] */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = "[email protected]"; sourceTree = "<group>"; };
6169CD1D28512EA300CEAD22 /* AddressSearchResult.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AddressSearchResult.swift; sourceTree = "<group>"; };
6169CD1F28512EC700CEAD22 /* MapKit.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = MapKit.framework; path = Platforms/MacOSX.platform/Developer/SDKs/MacOSX12.3.sdk/System/iOSSupport/System/Library/Frameworks/MapKit.framework; sourceTree = DEVELOPER_DIR; };
616B573E28CA42DB0026B4E4 /* [email protected] */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = "[email protected]"; sourceTree = "<group>"; };
6171960D2864D3B80040ECE3 /* AutoCompleteConstants.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AutoCompleteConstants.swift; sourceTree = "<group>"; };
61806A0F28CB99F500C33002 /* Date+Distance.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "Date+Distance.swift"; sourceTree = "<group>"; };
618E787A26EFDD310034A01F /* ServerErrorMapperTest.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ServerErrorMapperTest.swift; sourceTree = "<group>"; };
61924D45273999E1003CF2DB /* [email protected] */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = "[email protected]"; sourceTree = "<group>"; };
6198555B27DBF4A1003F8951 /* [email protected] */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = "[email protected]"; sourceTree = "<group>"; };
Expand Down Expand Up @@ -2149,6 +2159,7 @@
B66FA0B1267D6F03008D7F1D /* [email protected] */,
6164582B27E963C800FEAB8E /* [email protected] */,
61924D45273999E1003CF2DB /* [email protected] */,
616B573E28CA42DB0026B4E4 /* [email protected] */,
);
path = PaymentMethods;
sourceTree = "<group>";
Expand Down Expand Up @@ -2974,6 +2985,7 @@
children = (
B6E9B91A266EE54F00C1308D /* FormSpec */,
B66F0CA326717B8C0097C2E8 /* PaymentSheetFormFactory.swift */,
61078DA728C7C49C007C7001 /* PaymentSheetFormFactory+UPI.swift */,
B645878827EAAA660011FA64 /* PaymentSheetFormFactory+Card.swift */,
B64C503E27BC721800E95B66 /* PaymentSheetFormFactory+FormSpec.swift */,
);
Expand All @@ -2985,11 +2997,11 @@
children = (
B6AEC92627ED3BEB0084CD67 /* Elements */,
61EA8CED26DD84DF00B2879D /* Error+PaymentSheet.swift */,
61806A0F28CB99F500C33002 /* Date+Distance.swift */,
B6BB89CF266EF7F8005E044F /* Intent.swift */,
61DBE71D27308195008565C8 /* KlarnaHelper.swift */,
B6689185265324C600A5488F /* New Payment Method Screen */,
B6E40E8C254253E400A5BABD /* BottomSheet */,
B6E40E8C254253E400A5BABD /* PanModal */,
6BD80544282C87B20049857B /* PaymentMethodType.swift */,
B648F38E25E45A770009FB36 /* PaymentOption+Images.swift */,
D0E845642887327D00CB0461 /* PaymentSheet-LinkConfirmOption.swift */,
Expand Down Expand Up @@ -3031,6 +3043,8 @@
B694F27428874DA20006DD60 /* Address */,
3667949F25B8DF8B0094831B /* BottomSheet3DS2ViewController.swift */,
36F61202254C888F006656BD /* BottomSheetViewController.swift */,
61078DA328C278B3007C7001 /* PollingViewController.swift */,
61078DA928C7F28F007C7001 /* IntentStatusPoller.swift */,
B684476625538740005C4089 /* ChoosePaymentOptionViewController.swift */,
B65E749425832A290080D9B3 /* LoadingViewController.swift */,
36F61204254C888F006656BD /* PaymentSheetViewController.swift */,
Expand Down Expand Up @@ -3961,6 +3975,7 @@
F35E2DB2267ABA6700BE074B /* [email protected] in Resources */,
3180E1032592BB1800CE3D7E /* [email protected] in Resources */,
3180E0E12592BB1100CE3D7E /* [email protected] in Resources */,
616B573F28CA42DB0026B4E4 /* [email protected] in Resources */,
D0BEB409273CABFC0031D677 /* [email protected] in Resources */,
6198556027DBF4E6003F8951 /* [email protected] in Resources */,
3180E10A2592BB1800CE3D7E /* [email protected] in Resources */,
Expand Down Expand Up @@ -4313,6 +4328,7 @@
31D4D6882512EBAC00809066 /* UIToolbar+Stripe_InputAccessory.swift in Sources */,
366ECD36254B4AFA0082868E /* STPCardNumberInputTextFieldValidator.swift in Sources */,
61EC82F8288EF13E003D741F /* STPAnalyticsClient+Address.swift in Sources */,
61806A1028CB99F500C33002 /* Date+Distance.swift in Sources */,
D0E152922810D2F900BCB49F /* LinkSettings.swift in Sources */,
D092E37127C06F2F00B72609 /* PaymentSheet-Configuration+Link.swift in Sources */,
61D30DB926D5B5F2002872DE /* TestModeView.swift in Sources */,
Expand Down Expand Up @@ -4363,6 +4379,7 @@
316F811A25410B12000A80B5 /* STPPaymentMethodOXXOParams.swift in Sources */,
D03B1DDA2819F4C1009F4C9A /* LinkNavigationBar.swift in Sources */,
6145429D2850EC3E002A2901 /* ManualEntryButton.swift in Sources */,
61078DAA28C7F28F007C7001 /* IntentStatusPoller.swift in Sources */,
D075F87827443E3F00585EB8 /* SeparatorLabel.swift in Sources */,
317ABF40251196A600CC59EF /* STPCameraView.swift in Sources */,
3176C2142519723B00300ADE /* STPPaymentCardTextField.swift in Sources */,
Expand Down Expand Up @@ -4588,6 +4605,7 @@
B67243172524E3E5002E1AAF /* STPPaymentMethodPrzelewy24.swift in Sources */,
B67BC546257B024200B7349B /* PaymentMethodTypeCollectionView.swift in Sources */,
D0AF32DB2833005700BDE839 /* PayWithLinkViewController-SignUpViewModel.swift in Sources */,
61078DA828C7C49C007C7001 /* PaymentSheetFormFactory+UPI.swift in Sources */,
310AF46B271E0961007339F4 /* STPPaymentMethodCard.swift in Sources */,
36ADAE182523A5B100302DFB /* STPPaymentIntentLastPaymentError.swift in Sources */,
31F2E8782524143F004D4B5E /* STPPaymentResult.swift in Sources */,
Expand Down Expand Up @@ -4668,6 +4686,7 @@
D0D28E622757398200098245 /* Button+Link.swift in Sources */,
D092E37D27C5A01700B72609 /* STPAnalyticsClient+Link.swift in Sources */,
D0A621472886034800F7876D /* PayWithLinkController.swift in Sources */,
61078DA428C278B3007C7001 /* PollingViewController.swift in Sources */,
3111BE802513057C00288D28 /* STPMultiFormTextField.swift in Sources */,
319490592513CC6200AD8F0B /* STPImageLibrary.swift in Sources */,
B6D9CEAB2514809B00AAD424 /* STPPaymentMethodCardNetworks.swift in Sources */,
Expand Down
10 changes: 10 additions & 0 deletions Stripe/BottomSheetViewController.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,8 @@ import UIKit
@_spi(STP) import StripeUICore

protocol BottomSheetContentViewController: UIViewController {

/// - Note: Implementing `navigationBar` as a computed variable will result in undefined behavior.
var navigationBar: SheetNavigationBar { get }
var requiresFullScreen: Bool { get }
func didTapOrSwipeToDismiss()
Expand Down Expand Up @@ -283,6 +285,14 @@ extension BottomSheetViewController: PaymentSheetAuthenticationContext {
}
_ = popContentViewController()
}

func present(_ viewController: BottomSheetContentViewController) {
pushContentViewController(viewController)
}

func dismiss(_ viewController: BottomSheetContentViewController) {
_ = popContentViewController()
}
}

// MARK: - UIViewControllerTransitioningDelegate
Expand Down
22 changes: 22 additions & 0 deletions Stripe/Date+Distance.swift
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Original file line number Diff line number Diff line change
@@ -0,0 +1,22 @@
//
// Date+Distance.swift
// StripeiOS
//
// Created by Nick Porter on 9/9/22.
// Copyright © 2022 Stripe, Inc. All rights reserved.
//

import Foundation

extension Date {

public func compatibleDistance(to other: Date) -> TimeInterval {
if #available(iOS 13.0, *) {
return self.distance(to: other)
}

return TimeInterval(
Calendar.autoupdatingCurrent.dateComponents([Calendar.Component.second], from: self, to: other).second ?? 0
)
}
}
2 changes: 2 additions & 0 deletions Stripe/Enums+CustomStringConvertible.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -242,6 +242,8 @@ extension STPIntentActionType: CustomStringConvertible {
return "verifyWithMicrodeposits"
case .weChatPayRedirectToApp:
return "weChatPayRedirectToApp"
case .upiAwaitNotification:
return "upiAwaitNotification"
}
}
}
Expand Down
1 change: 1 addition & 0 deletions Stripe/Images.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,7 @@ enum Image: String, CaseIterable, ImageMaker {
case pm_type_sepa = "icon-pm-sepa"
case pm_type_paypal = "icon-pm-paypal"
case pm_type_link = "icon-pm-link"
case pm_type_upi = "icon-pm-upi"

// Icons/symbols
case icon_checkmark = "icon_checkmark"
Expand Down
95 changes: 95 additions & 0 deletions Stripe/IntentStatusPoller.swift
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Original file line number Diff line number Diff line change
@@ -0,0 +1,95 @@
//
// IntentStatusPoller.swift
// StripeiOS
//
// Created by Nick Porter on 9/6/22.
// Copyright © 2022 Stripe, Inc. All rights reserved.
//

import Foundation
import StripeCore

protocol IntentStatusPollerDelegate: AnyObject {
func didUpdate(paymentIntent: STPPaymentIntent)
}

class IntentStatusPoller {
let apiClient: STPAPIClient
let clientSecret: String
let maxRetries: Int

private var lastStatus: STPPaymentIntentStatus = .unknown
private var retryCount = 0
weak var delegate: IntentStatusPollerDelegate?

var isPolling: Bool = false {
didSet {
// Start polling if we weren't already polling
if !oldValue && isPolling {
forcePoll()
}
}
}

init(apiClient: STPAPIClient, clientSecret: String, maxRetries: Int) {
self.apiClient = apiClient
self.clientSecret = clientSecret
self.maxRetries = maxRetries
}

// MARK: Public APIs

public func beginPolling() {
isPolling = true
}

public func suspendPolling() {
isPolling = false
}

public func forcePoll() {
fetchStatus(forcePoll: true)
}

// MARK: Private functions

private func fetchStatus(forcePoll: Bool = false) {
guard forcePoll || (isPolling && retryCount < maxRetries) else { return }
retryCount += 1

apiClient.retrievePaymentIntent(withClientSecret: clientSecret) { [weak self] paymentIntent, error in
print("PI status")
print(paymentIntent?.status as Any)
print(self?.retryCount as Any)
guard let isPolling = self?.isPolling else {
return
}

// If latest status is different than last known status notify our delegate
if let paymentIntent = paymentIntent,
paymentIntent.status != self?.lastStatus,
isPolling {
self?.lastStatus = paymentIntent.status
self?.delegate?.didUpdate(paymentIntent: paymentIntent)
}

// If we are polling and have retries left, schedule a status fetch
if isPolling, let maxRetries = self?.maxRetries, let retryCount = self?.retryCount {
self?.retryWithExponentialDelay(retryCount: maxRetries - retryCount) {
self?.fetchStatus()
}
}
}
}

private func retryWithExponentialDelay(retryCount: Int, block: @escaping () -> ()) {
// Add some backoff time
let delayTime = TimeInterval(
pow(Double(1 + maxRetries - retryCount), Double(2))
)

DispatchQueue.main.asyncAfter(deadline: .now() + delayTime) {
block()
}
}
}
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