Fix Part of #4938: New onboarding flow gating platform param 1 of 3 (#…

…5269)

## Explanation
Fix Part of #4938: Introduce a new platform parameter that will be used
to gate the revised onboarding flow during development.

## Essential Checklist
<!-- Please tick the relevant boxes by putting an "x" in them. -->
- [x] The PR title and explanation each start with "Fix #bugnum: " (If
this PR fixes part of an issue, prefix the title with "Fix part of
#bugnum: ...".)
- [ ] Any changes to
[scripts/assets](https://github.com/oppia/oppia-android/tree/develop/scripts/assets)
files have their rationale included in the PR explanation.
- [x] The PR follows the [style
guide](https://github.com/oppia/oppia-android/wiki/Coding-style-guide).
- [x] The PR does not contain any unnecessary code changes from Android
Studio
([reference](https://github.com/oppia/oppia-android/wiki/Guidance-on-submitting-a-PR#undo-unnecessary-changes)).
- [x] The PR is made from a branch that's **not** called "develop" and
is up-to-date with "develop".
- [x] The PR is **assigned** to the appropriate reviewers
([reference](https://github.com/oppia/oppia-android/wiki/Guidance-on-submitting-a-PR#clarification-regarding-assignees-and-reviewers-section)).

## For UI-specific PRs only
<!-- Delete these section if this PR does not include UI-related
changes. -->
If your PR includes UI-related changes, then:
- Add screenshots for portrait/landscape for both a tablet & phone of
the before & after UI changes
- For the screenshots above, include both English and pseudo-localized
(RTL) screenshots (see [RTL
guide](https://github.com/oppia/oppia-android/wiki/RTL-Guidelines))
- Add a video showing the full UX flow with a screen reader enabled (see
[accessibility
guide](https://github.com/oppia/oppia-android/wiki/Accessibility-A11y-Guide))
- For PRs introducing new UI elements or color changes, both light and
dark mode screenshots must be included
- Add a screenshot demonstrating that you ran affected Espresso tests
locally & that they're passing

---------

Co-authored-by: Ben Henning <ben@oppia.org>

domain/src/main/java/org/oppia/android/domain/platformparameter/PlatformParameterAlphaKenyaModule.kt

@@ -17,6 +17,8 @@ import org.oppia.android.util.platformparameter.ENABLE_EXTRA_TOPIC_TABS_UI_DEFAU
 import org.oppia.android.util.platformparameter.ENABLE_INTERACTION_CONFIG_CHANGE_STATE_RETENTION_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_NPS_SURVEY
 import org.oppia.android.util.platformparameter.ENABLE_NPS_SURVEY_DEFAULT_VALUE
+import org.oppia.android.util.platformparameter.ENABLE_ONBOARDING_FLOW_V2
+import org.oppia.android.util.platformparameter.ENABLE_ONBOARDING_FLOW_V2_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_PERFORMANCE_METRICS_COLLECTION
 import org.oppia.android.util.platformparameter.ENABLE_PERFORMANCE_METRICS_COLLECTION_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_SPOTLIGHT_UI_DEFAULT_VALUE
@@ -30,6 +32,7 @@ import org.oppia.android.util.platformparameter.EnableInteractionConfigChangeSta
 import org.oppia.android.util.platformparameter.EnableLearnerStudyAnalytics
 import org.oppia.android.util.platformparameter.EnableLoggingLearnerStudyIds
 import org.oppia.android.util.platformparameter.EnableNpsSurvey
+import org.oppia.android.util.platformparameter.EnableOnboardingFlowV2
 import org.oppia.android.util.platformparameter.EnablePerformanceMetricsCollection
 import org.oppia.android.util.platformparameter.EnableSpotlightUi
 import org.oppia.android.util.platformparameter.FAST_LANGUAGE_SWITCHING_IN_LESSON
@@ -321,4 +324,15 @@ class PlatformParameterAlphaKenyaModule {
         ENABLE_NPS_SURVEY_DEFAULT_VALUE
       )
   }
+
+  @Provides
+  @EnableOnboardingFlowV2
+  fun provideEnableOnboardingFlowV2(
+    platformParameterSingleton: PlatformParameterSingleton
+  ): PlatformParameterValue<Boolean> {
+    return platformParameterSingleton.getBooleanPlatformParameter(ENABLE_ONBOARDING_FLOW_V2)
+      ?: PlatformParameterValue.createDefaultParameter(
+        ENABLE_ONBOARDING_FLOW_V2_DEFAULT_VALUE
+      )
+  }
 }

domain/src/main/java/org/oppia/android/domain/platformparameter/PlatformParameterAlphaModule.kt

@@ -17,6 +17,8 @@ import org.oppia.android.util.platformparameter.ENABLE_EXTRA_TOPIC_TABS_UI_DEFAU
 import org.oppia.android.util.platformparameter.ENABLE_INTERACTION_CONFIG_CHANGE_STATE_RETENTION_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_NPS_SURVEY
 import org.oppia.android.util.platformparameter.ENABLE_NPS_SURVEY_DEFAULT_VALUE
+import org.oppia.android.util.platformparameter.ENABLE_ONBOARDING_FLOW_V2
+import org.oppia.android.util.platformparameter.ENABLE_ONBOARDING_FLOW_V2_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_PERFORMANCE_METRICS_COLLECTION
 import org.oppia.android.util.platformparameter.ENABLE_PERFORMANCE_METRICS_COLLECTION_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.EXTRA_TOPIC_TABS_UI
@@ -29,6 +31,7 @@ import org.oppia.android.util.platformparameter.EnableInteractionConfigChangeSta
 import org.oppia.android.util.platformparameter.EnableLearnerStudyAnalytics
 import org.oppia.android.util.platformparameter.EnableLoggingLearnerStudyIds
 import org.oppia.android.util.platformparameter.EnableNpsSurvey
+import org.oppia.android.util.platformparameter.EnableOnboardingFlowV2
 import org.oppia.android.util.platformparameter.EnablePerformanceMetricsCollection
 import org.oppia.android.util.platformparameter.EnableSpotlightUi
 import org.oppia.android.util.platformparameter.FAST_LANGUAGE_SWITCHING_IN_LESSON
@@ -316,4 +319,15 @@ class PlatformParameterAlphaModule {
         ENABLE_NPS_SURVEY_DEFAULT_VALUE
       )
   }
+
+  @Provides
+  @EnableOnboardingFlowV2
+  fun provideEnableOnboardingFlowV2(
+    platformParameterSingleton: PlatformParameterSingleton
+  ): PlatformParameterValue<Boolean> {
+    return platformParameterSingleton.getBooleanPlatformParameter(ENABLE_ONBOARDING_FLOW_V2)
+      ?: PlatformParameterValue.createDefaultParameter(
+        ENABLE_ONBOARDING_FLOW_V2_DEFAULT_VALUE
+      )
+  }
 }

domain/src/main/java/org/oppia/android/domain/platformparameter/PlatformParameterModule.kt

@@ -17,6 +17,8 @@ import org.oppia.android.util.platformparameter.ENABLE_EXTRA_TOPIC_TABS_UI_DEFAU
 import org.oppia.android.util.platformparameter.ENABLE_INTERACTION_CONFIG_CHANGE_STATE_RETENTION_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_NPS_SURVEY
 import org.oppia.android.util.platformparameter.ENABLE_NPS_SURVEY_DEFAULT_VALUE
+import org.oppia.android.util.platformparameter.ENABLE_ONBOARDING_FLOW_V2
+import org.oppia.android.util.platformparameter.ENABLE_ONBOARDING_FLOW_V2_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_PERFORMANCE_METRICS_COLLECTION
 import org.oppia.android.util.platformparameter.ENABLE_PERFORMANCE_METRICS_COLLECTION_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_SPOTLIGHT_UI_DEFAULT_VALUE
@@ -30,6 +32,7 @@ import org.oppia.android.util.platformparameter.EnableInteractionConfigChangeSta
 import org.oppia.android.util.platformparameter.EnableLearnerStudyAnalytics
 import org.oppia.android.util.platformparameter.EnableLoggingLearnerStudyIds
 import org.oppia.android.util.platformparameter.EnableNpsSurvey
+import org.oppia.android.util.platformparameter.EnableOnboardingFlowV2
 import org.oppia.android.util.platformparameter.EnablePerformanceMetricsCollection
 import org.oppia.android.util.platformparameter.EnableSpotlightUi
 import org.oppia.android.util.platformparameter.FAST_LANGUAGE_SWITCHING_IN_LESSON
@@ -318,4 +321,15 @@ class PlatformParameterModule {
         ENABLE_NPS_SURVEY_DEFAULT_VALUE
       )
   }
+
+  @Provides
+  @EnableOnboardingFlowV2
+  fun provideEnableOnboardingFlowV2(
+    platformParameterSingleton: PlatformParameterSingleton
+  ): PlatformParameterValue<Boolean> {
+    return platformParameterSingleton.getBooleanPlatformParameter(ENABLE_ONBOARDING_FLOW_V2)
+      ?: PlatformParameterValue.createDefaultParameter(
+        ENABLE_ONBOARDING_FLOW_V2_DEFAULT_VALUE
+      )
+  }
 }

testing/src/main/java/org/oppia/android/testing/platformparameter/TestPlatformParameterModule.kt

@@ -14,6 +14,7 @@ import org.oppia.android.util.platformparameter.ENABLE_EDIT_ACCOUNTS_OPTIONS_UI_
 import org.oppia.android.util.platformparameter.ENABLE_EXTRA_TOPIC_TABS_UI_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_INTERACTION_CONFIG_CHANGE_STATE_RETENTION_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_NPS_SURVEY_DEFAULT_VALUE
+import org.oppia.android.util.platformparameter.ENABLE_ONBOARDING_FLOW_V2_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.ENABLE_PERFORMANCE_METRICS_COLLECTION_DEFAULT_VALUE
 import org.oppia.android.util.platformparameter.EnableAppAndOsDeprecation
 import org.oppia.android.util.platformparameter.EnableDownloadsSupport
@@ -24,6 +25,7 @@ import org.oppia.android.util.platformparameter.EnableInteractionConfigChangeSta
 import org.oppia.android.util.platformparameter.EnableLearnerStudyAnalytics
 import org.oppia.android.util.platformparameter.EnableLoggingLearnerStudyIds
 import org.oppia.android.util.platformparameter.EnableNpsSurvey
+import org.oppia.android.util.platformparameter.EnableOnboardingFlowV2
 import org.oppia.android.util.platformparameter.EnablePerformanceMetricsCollection
 import org.oppia.android.util.platformparameter.EnableSpotlightUi
 import org.oppia.android.util.platformparameter.FAST_LANGUAGE_SWITCHING_IN_LESSON_DEFAULT_VALUE
@@ -271,6 +273,12 @@ class TestPlatformParameterModule {
     return PlatformParameterValue.createDefaultParameter(enableNpsSurvey)
   }
 
+  @Provides
+  @EnableOnboardingFlowV2
+  fun provideEnableOnboardingFlowV2(): PlatformParameterValue<Boolean> {
+    return PlatformParameterValue.createDefaultParameter(enableOnboardingFlowV2)
+  }
+
   companion object {
     private var enableDownloadsSupport = ENABLE_DOWNLOADS_SUPPORT_DEFAULT_VALUE
     private var enableEditAccountsOptionsUi = ENABLE_EDIT_ACCOUNTS_OPTIONS_UI_DEFAULT_VALUE
@@ -289,6 +297,7 @@ class TestPlatformParameterModule {
       NPS_SURVEY_MINIMUM_AGGREGATE_LEARNING_TIME_IN_A_TOPIC_IN_MINUTES_DEFAULT_VALUE
     private var gracePeriodInDays = NPS_SURVEY_GRACE_PERIOD_IN_DAYS_DEFAULT_VALUE
     private var enableNpsSurvey = ENABLE_NPS_SURVEY_DEFAULT_VALUE
+    private var enableOnboardingFlowV2 = ENABLE_ONBOARDING_FLOW_V2_DEFAULT_VALUE
 
     @VisibleForTesting(otherwise = VisibleForTesting.NONE)
     fun forceEnableDownloadsSupport(value: Boolean) {
@@ -349,6 +358,12 @@ class TestPlatformParameterModule {
       enableNpsSurvey = value
     }
 
+    /** Enables forcing [EnableOnboardingFlowV2] platform parameter flag from tests. */
+    @VisibleForTesting(otherwise = VisibleForTesting.NONE)
+    fun forceEnableOnboardingFlowV2(value: Boolean) {
+      enableOnboardingFlowV2 = value
+    }
+
     @VisibleForTesting(otherwise = VisibleForTesting.NONE)
     fun reset() {
       enableDownloadsSupport = ENABLE_DOWNLOADS_SUPPORT_DEFAULT_VALUE
@@ -361,6 +376,7 @@ class TestPlatformParameterModule {
         ENABLE_INTERACTION_CONFIG_CHANGE_STATE_RETENTION_DEFAULT_VALUE
       enablePerformanceMetricsCollection = ENABLE_PERFORMANCE_METRICS_COLLECTION_DEFAULT_VALUE
       enableAppAndOsDeprecation = ENABLE_APP_AND_OS_DEPRECATION_DEFAULT_VALUE
+      enableOnboardingFlowV2 = ENABLE_ONBOARDING_FLOW_V2_DEFAULT_VALUE
     }
   }
 }

utility/src/main/java/org/oppia/android/util/platformparameter/FeatureFlagConstants.kt

@@ -166,3 +166,13 @@ const val ENABLE_NPS_SURVEY = "enable_nps_survey"
 
 /** Default value of the feature flag corresponding to [EnableNpsSurvey]. */
 const val ENABLE_NPS_SURVEY_DEFAULT_VALUE = false
+
+/** Qualifier for the feature flag that toggles the new onboarding flow. */
+@Qualifier
+annotation class EnableOnboardingFlowV2
+
+/** Name of the feature flag that toggles the new onboarding flow. */
+const val ENABLE_ONBOARDING_FLOW_V2 = "enable_onboarding_flow_v2"
+
+/** Default value of the feature flag corresponding to [EnableOnboardingFlowV2]. */
+const val ENABLE_ONBOARDING_FLOW_V2_DEFAULT_VALUE = false