Privacy Pro: Implement Free Trials to all users (#6165)

Task/Issue URL:
https://app.asana.com/1/137249556945/project/72649045549333/task/1210327090176006

### Description
Added support for Free Trials to all users

### Steps to test this PR
_Pre steps_

- Apply Privacy Pro patch attached to
https://app.asana.com/1/137249556945/project/1142021229838617/task/1210426885327765?focus=true
- That patch would point privacy config to
`https://jsonblob.com/api/1339653006785961984` which has the
`privacyProFreeTrial` enabled
        - It also includes staging URLs for new offers

_Free Trials ROW_
- [x] Set a ROW Google account
- [x] Fresh install
- [x] Go to Settings, and check 'Try Privacy Pro Free' is displayed in
the Settings menu
- [x] Tap on Privacy Pro which will display the paywall screen
- [x] Check you see the free trial products on paywall
- [x] Select any product
- [x] Check you can buy the free trial correctly
- [x] Check Subscription Settings screen is showing status/renewal dates
correctly for Free Trial
- [x] Cancel subscription (when still on Free Trial)
- [x] Check Subscription Settings screen is showing status/expire dates
correctly for Free Trial
- [x] Wait until it expires
- [ ] Go to Settings and check you don't see 'Try Privacy Pro Free'
anymore, but instead 'Get Privacy Pro'
- [x] Check Subscription Settings screen is showing status/expired state
correctly
- [x] Go to Paywall again
- [x] Check you are offered full price subscriptions

_Free Trials (US)_
- [x] Set a US Google account
- [x] Fresh install
- [x] Go to Settings, and check 'Try Privacy Pro Free' is displayed in
the Settings menu
- [x] Tap on Privacy Pro which will display the paywall screen
- [x] Check you see the free trial products on paywall
- [x] Select any product
- [x] Check you can buy the free trial correctly
- [x] Check Subscription Settings screen is showing status/renewal dates
correctly for Free Trial
- [x] Cancel subscription (when still on Free Trial)
- [x] Check Subscription Settings screen is showing status/expire dates
correctly for Free Trial
- [x] Wait until it expires
- [ ] Go to Settings and check you don't see 'Try Privacy Pro Free'
anymore, but instead 'Get Privacy Pro'
- [x] Check Subscription Settings screen is showing status/expired state
correctly
- [x] Go to Paywall again
- [x] Check you are offered full price subscriptions

_Translations_
- [x] Set the device to a different language
- [x] Use a Privacy Pro eligible Google account
- [x] Follow the same steps as before, ensuring translations are
available on all screens


### UI changes

- See #5686

Author: nalcalag

subscriptions/subscriptions-api/src/main/java/com/duckduckgo/subscriptions/api/Subscriptions.kt

@@ -76,6 +76,11 @@ interface Subscriptions {
      * @return `true` if the given Uri leads to the Privacy Pro page, or `false` otherwise
      */
     fun isPrivacyProUrl(uri: Uri): Boolean
+
+    /**
+     * @return `true` if a Free Trial offer is available for the user, `false` otherwise
+     */
+    suspend fun isFreeTrialEligible(): Boolean
 }
 
 enum class Product(val value: String) {

subscriptions/subscriptions-dummy-impl/src/main/java/com/duckduckgo/subscriptions/impl/SubscriptionsDummy.kt

@@ -52,4 +52,6 @@ class SubscriptionsDummy @Inject constructor() : Subscriptions {
     }
 
     override fun isPrivacyProUrl(uri: Uri): Boolean = false
+
+    override suspend fun isFreeTrialEligible(): Boolean = false
 }

subscriptions/subscriptions-impl/src/main/java/com/duckduckgo/subscriptions/impl/RealSubscriptions.kt

@@ -34,7 +34,6 @@ import com.duckduckgo.feature.toggles.api.RemoteFeatureStoreNamed
 import com.duckduckgo.feature.toggles.api.Toggle
 import com.duckduckgo.feature.toggles.api.Toggle.DefaultFeatureValue
 import com.duckduckgo.feature.toggles.api.Toggle.State
-import com.duckduckgo.feature.toggles.api.Toggle.State.CohortName
 import com.duckduckgo.navigation.api.GlobalActivityStarter
 import com.duckduckgo.subscriptions.api.Product
 import com.duckduckgo.subscriptions.api.SubscriptionStatus
@@ -127,6 +126,10 @@ class RealSubscriptions @Inject constructor(
         val path = uri.pathSegments.firstOrNull()
         return eTld == PRIVACY_PRO_ETLD && size == 1 && path == PRIVACY_PRO_PATH
     }
+
+    override suspend fun isFreeTrialEligible(): Boolean {
+        return subscriptionsManager.isFreeTrialEligible()
+    }
 }
 
 @ContributesRemoteFeature(
@@ -162,12 +165,7 @@ interface PrivacyProFeature {
     fun featuresApi(): Toggle
 
     @Toggle.DefaultValue(DefaultFeatureValue.FALSE)
-    fun privacyProFreeTrialJan25(): Toggle
-
-    enum class Cohorts(override val cohortName: String) : CohortName {
-        CONTROL("control"),
-        TREATMENT("treatment"),
-    }
+    fun privacyProFreeTrial(): Toggle
 }
 
 @ContributesBinding(AppScope::class)

subscriptions/subscriptions-impl/src/main/java/com/duckduckgo/subscriptions/impl/SubscriptionsConstants.kt

@@ -31,6 +31,10 @@ object SubscriptionsConstants {
     // List of offers
     const val MONTHLY_FREE_TRIAL_OFFER_US = "ddg-privacy-pro-freetrial-monthly-renews-us"
     const val YEARLY_FREE_TRIAL_OFFER_US = "ddg-privacy-pro-freetrial-yearly-renews-us"
+    const val MONTHLY_FREE_TRIAL_OFFER_ROW = "ddg-privacy-pro-freetrial-monthly-renews-row"
+    const val YEARLY_FREE_TRIAL_OFFER_ROW = "ddg-privacy-pro-freetrial-yearly-renews-row"
+    val LIST_OF_FREE_TRIAL_OFFERS =
+        listOf(MONTHLY_FREE_TRIAL_OFFER_US, YEARLY_FREE_TRIAL_OFFER_US, MONTHLY_FREE_TRIAL_OFFER_ROW, YEARLY_FREE_TRIAL_OFFER_ROW)
 
     // List of features
     const val LEGACY_FE_NETP = "vpn"

subscriptions/subscriptions-impl/src/main/java/com/duckduckgo/subscriptions/impl/SubscriptionsManager.kt

@@ -222,11 +222,9 @@ interface SubscriptionsManager {
     suspend fun canSupportEncryption(): Boolean
 
     /**
-     * Checks whether the user has previously used a trial.
-     *
-     * @return [Boolean] indicating if the user has had a trial before.
+     * @return `true` if a Free Trial offer is available for the user, `false` otherwise
      */
-    suspend fun hadTrial(): Boolean
+    suspend fun isFreeTrialEligible(): Boolean
 }
 
 @SingleInstanceIn(AppScope::class)
@@ -343,12 +341,13 @@ class RealSubscriptionsManager @Inject constructor(
 
     override suspend fun canSupportEncryption(): Boolean = authRepository.canSupportEncryption()
 
-    override suspend fun hadTrial(): Boolean {
-        return try {
-            return subscriptionsService.offerStatus().hadTrial
+    override suspend fun isFreeTrialEligible(): Boolean {
+        val userHadFreeTrial = try {
+            subscriptionsService.offerStatus().hadTrial
         } catch (e: Exception) {
             false
         }
+        return !userHadFreeTrial && privacyProFeature.get().privacyProFreeTrial().isEnabled()
     }
 
     override suspend fun getAccount(): Account? = authRepository.getAccount()
@@ -468,12 +467,6 @@ class RealSubscriptionsManager @Inject constructor(
             }
 
             if (subscription.isActive()) {
-                // Free Trial experiment metrics
-                if (confirmationResponse.subscription.productId.contains("monthly-renews-us")) {
-                    pixelSender.reportFreeTrialOnSubscriptionStartedMonthly()
-                } else if (confirmationResponse.subscription.productId.contains("yearly-renews-us")) {
-                    pixelSender.reportFreeTrialOnSubscriptionStartedYearly()
-                }
                 pixelSender.reportPurchaseSuccess()
                 pixelSender.reportSubscriptionActivated()
                 emitEntitlementsValues()

subscriptions/subscriptions-impl/src/main/java/com/duckduckgo/subscriptions/impl/freetrial/FreeTrialExperimentDataStore.kt

@@ -230,14 +230,8 @@ class SubscriptionMessagingInterface @Inject constructor(
         ) {
             appCoroutineScope.launch {
                 when (jsMessage.method) {
-                    "subscriptionsMonthlyPriceClicked" -> {
-                        pixelSender.reportMonthlyPriceClick()
-                        pixelSender.reportFreeTrialOnStartClickedMonthly()
-                    }
-                    "subscriptionsYearlyPriceClicked" -> {
-                        pixelSender.reportYearlyPriceClick()
-                        pixelSender.reportFreeTrialOnStartClickedYearly()
-                    }
+                    "subscriptionsMonthlyPriceClicked" -> pixelSender.reportMonthlyPriceClick()
+                    "subscriptionsYearlyPriceClicked" -> pixelSender.reportYearlyPriceClick()
                     "subscriptionsAddEmailSuccess" -> {
                         pixelSender.reportAddEmailSuccess()
                         subscriptionsManager.tryRefreshAccessToken()