MBL-1403 Stripe Link (#2038)

* Upgrade Stripe SDK to 20.42.0

* Pass in userEmail and add feature flag

* Fix feature gating logic

* Revert Link on Payment Methods Settings to match iOS and web behavior.

* Fix tests

* Lint

* Remove hardcoded flag value

* Comments

app/build.gradle

@@ -231,7 +231,7 @@ dependencies {
     implementation "com.jakewharton.rxbinding:rxbinding-recyclerview-v7:$rx_binding_version"
     implementation "com.jakewharton.rxbinding:rxbinding-support-v4:$rx_binding_version"
     implementation "com.jakewharton.timber:timber:5.0.1"
-    implementation 'com.stripe:stripe-android:20.16.1'
+    implementation 'com.stripe:stripe-android:20.42.0'
     final okhttp_version = '4.10.+'
     implementation "com.squareup.okhttp3:logging-interceptor:$okhttp_version"
     implementation "com.squareup.okhttp3:okhttp-urlconnection:$okhttp_version"

app/src/main/java/com/kickstarter/libs/featureflag/FeatureFlagClient.kt

@@ -63,7 +63,8 @@ enum class FlagKey(val key: String) {
     ANDROID_DARK_MODE_ENABLED("android_dark_mode_enabled"),
     ANDROID_POST_CAMPAIGN_PLEDGES("android_post_campaign_pledges"),
     ANDROID_OAUTH("android_oauth"),
-    ANDROID_ENCRYPT("android_encrypt_token")
+    ANDROID_ENCRYPT("android_encrypt_token"),
+    ANDROID_STRIPE_LINK("android_stripe_link")
 }
 
 fun FeatureFlagClient.getFetchInterval(): Long =

app/src/main/java/com/kickstarter/libs/utils/extensions/ContextExt.kt

@@ -103,11 +103,25 @@ fun Context.showAlertDialog(
  * Provides the configuration for the PaymentSheet, following the specs
  *  @see [link](https://stripe.com/docs/payments/accept-a-payment?platform=android&ui=elements#android-flowcontroller)
  */
-fun Context.getPaymentSheetConfiguration(): PaymentSheet.Configuration {
+fun Context.getPaymentSheetConfiguration(userEmail: String, alwaysHideLink: Boolean): PaymentSheet.Configuration {
+    val stripeLinkEnabled = this.getEnvironment()?.featureFlagClient()?.getBoolean(FlagKey.ANDROID_STRIPE_LINK) ?: false
+    val billingDetailsCollectionConfiguration =
+        if (alwaysHideLink || !stripeLinkEnabled) {
+            PaymentSheet.BillingDetailsCollectionConfiguration(
+                email = PaymentSheet.BillingDetailsCollectionConfiguration.CollectionMode.Always // Turn off Link
+            )
+        } else {
+            PaymentSheet.BillingDetailsCollectionConfiguration(
+                email = PaymentSheet.BillingDetailsCollectionConfiguration.CollectionMode.Automatic
+            )
+        }
+
     return PaymentSheet.Configuration(
         merchantDisplayName = getString(R.string.app_name),
         allowsDelayedPaymentMethods = true,
-        appearance = this.getPaymentSheetAppearance()
+        appearance = this.getPaymentSheetAppearance(),
+        defaultBillingDetails = PaymentSheet.BillingDetails(email = userEmail),
+        billingDetailsCollectionConfiguration = billingDetailsCollectionConfiguration
     )
 }
 

app/src/main/java/com/kickstarter/ui/activities/PaymentMethodsSettingsActivity.kt

@@ -146,7 +146,7 @@ class PaymentMethodsSettingsActivity : AppCompatActivity() {
     private fun flowControllerPresentPaymentOption(clientSecret: String) {
         flowController.configureWithSetupIntent(
             setupIntentClientSecret = clientSecret,
-            configuration = this.getPaymentSheetConfiguration(),
+            configuration = this.getPaymentSheetConfiguration("", true), // Always hide Link on settings page
             callback = ::onConfigured
         )
     }

app/src/main/java/com/kickstarter/ui/activities/ProjectPageActivity.kt

@@ -576,7 +576,7 @@ class ProjectPageActivity :
 
                     LaunchedEffect(Unit) {
                         latePledgeCheckoutViewModel.clientSecretForNewPaymentMethod.collect {
-                            flowControllerPresentPaymentOption(it)
+                            flowControllerPresentPaymentOption(it, latePledgeCheckoutUIState.userEmail)
                         }
                     }
 
@@ -1262,10 +1262,10 @@ class ProjectPageActivity :
         }
     }
 
-    private fun flowControllerPresentPaymentOption(clientSecret: String) {
+    private fun flowControllerPresentPaymentOption(clientSecret: String, userEmail: String) {
         flowController.configureWithSetupIntent(
             setupIntentClientSecret = clientSecret,
-            configuration = getPaymentSheetConfiguration(),
+            configuration = getPaymentSheetConfiguration(userEmail, false),
             callback = ::onConfigured
         )
     }

app/src/main/java/com/kickstarter/ui/activities/compose/FormularyScreen.kt

@@ -112,7 +112,7 @@ fun FormularyScreen(
             value = outputs.email().subscribeAsState(initial = "").value,
             onValueChange = {},
             readOnly = true,
-            label = { Text(stringResource(id = R.string.email)) },
+            label = { Text(stringResource(id = R.string.Email)) },
             colors = TextFieldDefaults.textFieldColors(
                 backgroundColor = colors.kds_support_200,
                 errorLabelColor = colors.kds_alert,

app/src/main/java/com/kickstarter/ui/activities/compose/login/ResetPasswordScreen.kt

@@ -190,7 +190,7 @@ fun ResetPasswordScreen(
                         )
                     )
                     .testTag(ResetPasswordTestTag.EMAIL.name),
-                label = stringResource(id = R.string.email),
+                label = stringResource(id = R.string.Email),
                 initialValue = initialEmail,
                 onValueChanged = { value ->
                     emailInput = value

app/src/main/java/com/kickstarter/ui/fragments/PledgeFragment.kt

@@ -583,9 +583,9 @@ class PledgeFragment :
 
         this.viewModel.outputs.presentPaymentSheet()
             .observeOn(AndroidSchedulers.mainThread())
-            .subscribe {
-                setupClientId = it
-                flowControllerPresentPaymentOption(it)
+            .subscribe { clientSecretAndUserEmail: Pair<String, String> ->
+                setupClientId = clientSecretAndUserEmail.first
+                flowControllerPresentPaymentOption(clientSecretAndUserEmail.first, clientSecretAndUserEmail.second)
             }
             .addToDisposable(disposables)
 
@@ -697,11 +697,11 @@ class PledgeFragment :
         }
     }
 
-    private fun flowControllerPresentPaymentOption(clientSecret: String) {
+    private fun flowControllerPresentPaymentOption(clientSecret: String, userEmail: String) {
         context?.let {
             flowController.configureWithSetupIntent(
                 setupIntentClientSecret = clientSecret,
-                configuration = it.getPaymentSheetConfiguration(),
+                configuration = it.getPaymentSheetConfiguration(userEmail, false),
                 callback = ::onConfigured
             )
         }

app/src/main/java/com/kickstarter/ui/toolbars/compose/ToolBar.kt

@@ -70,7 +70,7 @@ fun TopToolBar(
                 ) {
                     Icon(
                         imageVector = leftIcon,
-                        contentDescription = stringResource(id = R.string.back),
+                        contentDescription = stringResource(id = R.string.Back),
                         tint = leftIconColor ?: colors.kds_black
                     )
                 }

app/src/main/java/com/kickstarter/ui/views/compose/search/SearchTopBar.kt

@@ -77,7 +77,7 @@ fun SearchTopBar(
         ) {
             Icon(
                 imageVector = Icons.Filled.ArrowBack,
-                contentDescription = stringResource(id = R.string.back),
+                contentDescription = stringResource(id = R.string.Back),
                 tint = colors.kds_black
             )
         }

app/src/main/java/com/kickstarter/viewmodels/PledgeFragmentViewModel.kt

@@ -332,7 +332,7 @@ interface PledgeFragmentViewModel {
         fun localPickUpName(): Observable<String>
 
         /** Emits the String with the SetupIntent ClientID to present the PaymentSheet **/
-        fun presentPaymentSheet(): Observable<String>
+        fun presentPaymentSheet(): Observable<Pair<String, String>>
 
         fun showError(): Observable<String>
 
@@ -464,7 +464,7 @@ interface PledgeFragmentViewModel {
         private val localPickUpIsGone = BehaviorSubject.create<Boolean>()
         private val localPickUpName = BehaviorSubject.create<String>()
 
-        private val presentPaymentSheet = PublishSubject.create<String>()
+        private val presentPaymentSheet = PublishSubject.create<Pair<String, String>>()
         private val paymentSheetResult = PublishSubject.create<PaymentSheetResult>()
         private val paySheetPresented = PublishSubject.create<Boolean>()
         private val showError = PublishSubject.create<String>()
@@ -1253,6 +1253,7 @@ interface PledgeFragmentViewModel {
 
             shouldPresentPaymentSheet
                 .compose(valuesV2())
+                .compose(combineLatestPair(userEmail()))
                 .subscribe {
                     this.presentPaymentSheet.onNext(it)
                 }
@@ -1847,6 +1848,12 @@ interface PledgeFragmentViewModel {
                 .compose(neverErrorV2())
         }
 
+        private fun userEmail(): Observable<String> {
+            return this.apolloClient.userPrivacy()
+                .compose(neverErrorV2())
+                .map { it.email }
+        }
+
         override fun onCleared() {
             disposables.clear()
             super.onCleared()
@@ -2035,7 +2042,7 @@ interface PledgeFragmentViewModel {
         override fun localPickUpName(): Observable<String> =
             localPickUpName
 
-        override fun presentPaymentSheet(): Observable<String> =
+        override fun presentPaymentSheet(): Observable<Pair<String, String>> =
             this.presentPaymentSheet
 
         override fun showError(): Observable<String> =

app/src/test/java/com/kickstarter/viewmodels/PledgeFragmentViewModelTest.kt

@@ -107,7 +107,7 @@ class PledgeFragmentViewModelTest : KSRobolectricTestCase() {
     private val shippingSummaryAmount = TestSubscriber<CharSequence>()
     private val shippingSummaryIsGone = TestSubscriber<Boolean>()
     private val shippingSummaryLocation = TestSubscriber<String>()
-    private val presentPaymentSheet = TestSubscriber<String>()
+    private val presentPaymentSheet = TestSubscriber<Pair<String, String>>()
     private val showPledgeError = TestSubscriber<Unit>()
     private val showPledgeSuccess = TestSubscriber<Pair<CheckoutData, PledgeData>>()
     private val showSelectedCard = TestSubscriber<Pair<Int, CardState>>()
@@ -1966,7 +1966,7 @@ class PledgeFragmentViewModelTest : KSRobolectricTestCase() {
 
         // - Configure PaymentSheet
         this.vm.inputs.newCardButtonClicked()
-        this.presentPaymentSheet.assertValue(clientSecretID)
+        this.presentPaymentSheet.assertValue(Pair(clientSecretID, "[email protected]"))
         this.segmentTrack.assertValue(EventName.PAGE_VIEWED.eventName)
         this.pledgeButtonIsEnabled.assertValues(true, false)
         this.loadingState.assertValues(State.LOADING)
@@ -2021,7 +2021,7 @@ class PledgeFragmentViewModelTest : KSRobolectricTestCase() {
         setUpEnvironment(environment, RewardFactory.noReward(), backedProject, PledgeReason.FIX_PLEDGE)
 
         this.vm.inputs.newCardButtonClicked()
-        this.presentPaymentSheet.assertValue("")
+        this.presentPaymentSheet.assertValue(Pair("", "[email protected]"))
         this.segmentTrack.assertNoValues()
         this.pledgeButtonIsEnabled.assertValues(false, false)
         this.loadingState.assertValues(State.LOADING)
@@ -2042,7 +2042,7 @@ class PledgeFragmentViewModelTest : KSRobolectricTestCase() {
         setUpEnvironment(environment, RewardFactory.noReward(), backedProject, PledgeReason.UPDATE_PAYMENT)
 
         this.vm.inputs.newCardButtonClicked()
-        this.presentPaymentSheet.assertValue("")
+        this.presentPaymentSheet.assertValue(Pair("", "[email protected]"))
         this.segmentTrack.assertValue(EventName.PAGE_VIEWED.eventName)
         this.pledgeButtonIsEnabled.assertValues(true, false)
         this.loadingState.assertValues(State.LOADING)