feat: Add logic to tie together all pieces of the previous deprecatio…

…n milestones

app/src/main/java/org/oppia/android/app/notice/DeprecationNoticeActionListener.kt

@@ -1,9 +1,17 @@
 package org.oppia.android.app.notice
 
-import org.oppia.android.app.splash.DeprecationNoticeActionType
-
 /** Listener for when an option on any deprecation dialog is clicked. */
 interface DeprecationNoticeActionListener {
   /** Called when a dialog button is clicked. */
   fun onActionButtonClicked(noticeType: DeprecationNoticeActionType)
 }
+
+/** Enum class for the various deprecation notice actions available to the user. */
+enum class DeprecationNoticeActionType {
+  /** Action for when the user presses the 'Close' option on a deprecation dialog. */
+  CLOSE,
+  /** Action for when the user presses the 'Dismiss' option on a deprecation dialog. */
+  DISMISS,
+  /** Action for when the user presses the 'Update' option on a deprecation dialog. */
+  UPDATE
+}

app/src/main/java/org/oppia/android/app/notice/ForcedAppDeprecationNoticeDialogFragmentPresenter.kt

@@ -4,7 +4,6 @@ import android.app.Dialog
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import org.oppia.android.R
-import org.oppia.android.app.splash.DeprecationNoticeActionType
 import org.oppia.android.app.translation.AppLanguageResourceHandler
 import javax.inject.Inject
 

app/src/main/java/org/oppia/android/app/notice/OptionalAppDeprecationNoticeDialogFragmentPresenter.kt

@@ -4,7 +4,6 @@ import android.app.Dialog
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import org.oppia.android.R
-import org.oppia.android.app.splash.DeprecationNoticeActionType
 import org.oppia.android.app.translation.AppLanguageResourceHandler
 import javax.inject.Inject
 

app/src/main/java/org/oppia/android/app/notice/OsDeprecationNoticeDialogFragmentPresenter.kt

@@ -4,7 +4,6 @@ import android.app.Dialog
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import org.oppia.android.R
-import org.oppia.android.app.splash.DeprecationNoticeActionType
 import org.oppia.android.app.translation.AppLanguageResourceHandler
 import javax.inject.Inject
 

app/src/main/java/org/oppia/android/app/notice/testing/ForcedAppDeprecationNoticeDialogFragmentTestActivity.kt

@@ -2,8 +2,8 @@ package org.oppia.android.app.notice.testing
 
 import android.os.Bundle
 import org.oppia.android.app.notice.DeprecationNoticeActionListener
+import org.oppia.android.app.notice.DeprecationNoticeActionType
 import org.oppia.android.app.notice.ForcedAppDeprecationNoticeDialogFragment
-import org.oppia.android.app.splash.DeprecationNoticeActionType
 import org.oppia.android.app.testing.activity.TestActivity
 
 /** [TestActivity] for setting up a test environment for testing the beta notice dialog. */

app/src/main/java/org/oppia/android/app/notice/testing/OptionalAppDeprecationNoticeDialogFragmentTestActivity.kt

@@ -2,8 +2,8 @@ package org.oppia.android.app.notice.testing
 
 import android.os.Bundle
 import org.oppia.android.app.notice.DeprecationNoticeActionListener
+import org.oppia.android.app.notice.DeprecationNoticeActionType
 import org.oppia.android.app.notice.OptionalAppDeprecationNoticeDialogFragment
-import org.oppia.android.app.splash.DeprecationNoticeActionType
 import org.oppia.android.app.testing.activity.TestActivity
 
 /** [TestActivity] for setting up a test environment for testing the beta notice dialog. */

app/src/main/java/org/oppia/android/app/notice/testing/OsDeprecationNoticeDialogFragmentTestActivity.kt

@@ -2,8 +2,8 @@ package org.oppia.android.app.notice.testing
 
 import android.os.Bundle
 import org.oppia.android.app.notice.DeprecationNoticeActionListener
+import org.oppia.android.app.notice.DeprecationNoticeActionType
 import org.oppia.android.app.notice.OsDeprecationNoticeDialogFragment
-import org.oppia.android.app.splash.DeprecationNoticeActionType
 import org.oppia.android.app.testing.activity.TestActivity
 
 /** [TestActivity] for setting up a test environment for testing the beta notice dialog. */

app/src/main/java/org/oppia/android/app/splash/SplashActivity.kt

@@ -11,21 +11,13 @@ import org.oppia.android.app.fragment.FragmentComponentBuilderInjector
 import org.oppia.android.app.fragment.FragmentComponentFactory
 import org.oppia.android.app.model.ScreenName.SPLASH_ACTIVITY
 import org.oppia.android.app.notice.BetaNoticeClosedListener
+import org.oppia.android.app.notice.DeprecationNoticeActionListener
+import org.oppia.android.app.notice.DeprecationNoticeActionType
 import org.oppia.android.app.notice.DeprecationNoticeExitAppListener
 import org.oppia.android.app.notice.GeneralAvailabilityUpgradeNoticeClosedListener
 import org.oppia.android.util.logging.CurrentAppScreenNameIntentDecorator.decorateWithScreenName
 import javax.inject.Inject
 
-/** Enum class for the various deprecation notice actions available to the user. */
-enum class DeprecationNoticeActionType {
-  /** Action for when the user presses the 'Close' option on a deprecation dialog. */
-  CLOSE,
-  /** Action for when the user presses the 'Dismiss' option on a deprecation dialog. */
-  DISMISS,
-  /** Action for when the user presses the 'Update' option on a deprecation dialog. */
-  UPDATE
-}
-
 /**
  * An activity that shows a temporary loading page until the app is fully loaded then navigates to
  * the profile selection screen.
@@ -38,6 +30,7 @@ class SplashActivity :
   AppCompatActivity(),
   FragmentComponentFactory,
   DeprecationNoticeExitAppListener,
+  DeprecationNoticeActionListener,
   BetaNoticeClosedListener,
   GeneralAvailabilityUpgradeNoticeClosedListener {
 
@@ -69,4 +62,7 @@ class SplashActivity :
 
   override fun onGaUpgradeNoticeOkayButtonClicked(permanentlyDismiss: Boolean) =
     splashActivityPresenter.handleOnGaUpgradeNoticeOkayButtonClicked(permanentlyDismiss)
+
+  override fun onActionButtonClicked(noticeType: DeprecationNoticeActionType) =
+    splashActivityPresenter.handleOnDeprecationNoticeActionClicked(noticeType)
 }

app/src/main/java/org/oppia/android/app/splash/SplashActivityPresenter.kt

@@ -15,7 +15,11 @@ import org.oppia.android.app.model.AppStartupState.StartupMode
 import org.oppia.android.app.model.BuildFlavor
 import org.oppia.android.app.notice.AutomaticAppDeprecationNoticeDialogFragment
 import org.oppia.android.app.notice.BetaNoticeDialogFragment
+import org.oppia.android.app.notice.DeprecationNoticeActionType
+import org.oppia.android.app.notice.ForcedAppDeprecationNoticeDialogFragment
 import org.oppia.android.app.notice.GeneralAvailabilityUpgradeNoticeDialogFragment
+import org.oppia.android.app.notice.OptionalAppDeprecationNoticeDialogFragment
+import org.oppia.android.app.notice.OsDeprecationNoticeDialogFragment
 import org.oppia.android.app.onboarding.OnboardingActivity
 import org.oppia.android.app.profile.ProfileChooserActivity
 import org.oppia.android.app.translation.AppLanguageLocaleHandler
@@ -31,11 +35,16 @@ import org.oppia.android.util.data.DataProvider
 import org.oppia.android.util.data.DataProviders.Companion.combineWith
 import org.oppia.android.util.data.DataProviders.Companion.toLiveData
 import org.oppia.android.util.locale.OppiaLocale
+import org.oppia.android.util.platformparameter.EnableAppAndOsDeprecation
+import org.oppia.android.util.platformparameter.PlatformParameterValue
 import javax.inject.Inject
 
 private const val AUTO_DEPRECATION_NOTICE_DIALOG_FRAGMENT_TAG = "auto_deprecation_notice_dialog"
+private const val FORCED_DEPRECATION_NOTICE_DIALOG_FRAGMENT_TAG = "forced_deprecation_notice_dialog"
 private const val BETA_NOTICE_DIALOG_FRAGMENT_TAG = "beta_notice_dialog"
 private const val GA_UPDATE_NOTICE_DIALOG_FRAGMENT_TAG = "general_availability_update_notice_dialog"
+private const val OPTIONAL_UPDATE_NOTICE_DIALOG_FRAGMENT_TAG = "optional_update_notice_dialog"
+private const val OS_UPDATE_NOTICE_DIALOG_FRAGMENT_TAG = "os_update_notice_dialog"
 private const val SPLASH_INIT_STATE_DATA_PROVIDER_ID = "splash_init_state_data_provider"
 
 /** The presenter for [SplashActivity]. */
@@ -49,7 +58,9 @@ class SplashActivityPresenter @Inject constructor(
   private val localeController: LocaleController,
   private val appLanguageLocaleHandler: AppLanguageLocaleHandler,
   private val lifecycleSafeTimerFactory: LifecycleSafeTimerFactory,
-  private val currentBuildFlavor: BuildFlavor
+  private val currentBuildFlavor: BuildFlavor,
+  @EnableAppAndOsDeprecation
+  private val enableAppAndOsDeprecation: PlatformParameterValue<Boolean>,
 ) {
   lateinit var startupMode: StartupMode
 
@@ -67,6 +78,14 @@ class SplashActivityPresenter @Inject constructor(
     subscribeToOnboardingFlow()
   }
 
+  fun handleOnDeprecationNoticeActionClicked(noticeType: DeprecationNoticeActionType) {
+    when (noticeType) {
+      DeprecationNoticeActionType.CLOSE -> handleOnDeprecationNoticeCloseAppButtonClicked()
+      DeprecationNoticeActionType.DISMISS -> handleOnDeprecationNoticeUpdateButtonClicked()
+      DeprecationNoticeActionType.UPDATE -> handleOnDeprecationNoticeDialogDismissed()
+    }
+  }
+
   /** Handles cases where the user clicks the close app option on a deprecation notice dialog. */
   fun handleOnDeprecationNoticeCloseAppButtonClicked() {
     // If the app close button is clicked for the deprecation notice, finish the activity to close
@@ -75,7 +94,7 @@ class SplashActivityPresenter @Inject constructor(
   }
 
   /** Handles cases where the user clicks the update option on a deprecation notice dialog. */
-  fun handleOnDeprecationNoticeUpdateButtonClicked() {
+  private fun handleOnDeprecationNoticeUpdateButtonClicked() {
     // If the Update button is clicked for the deprecation notice, launch the Play Store and open
     // the Oppia app's page.
     val packageName = activity.packageName
@@ -100,7 +119,7 @@ class SplashActivityPresenter @Inject constructor(
   }
 
   /** Handles cases where the user dismisses the deprecation notice dialog. */
-  fun handleOnDeprecationNoticeDialogDismissed() {
+  private fun handleOnDeprecationNoticeDialogDismissed() {
     // If the Dismiss button is clicked for the deprecation notice, the dialog is automatically
     // dismissed. Navigate to profile chooser activity.
     activity.startActivity(ProfileChooserActivity.createProfileChooserActivity(activity))
@@ -200,6 +219,43 @@ class SplashActivityPresenter @Inject constructor(
   }
 
   private fun processStartupMode() {
+    if (enableAppAndOsDeprecation.value) {
+      when (startupMode) {
+        StartupMode.USER_IS_ONBOARDED -> {
+          activity.startActivity(ProfileChooserActivity.createProfileChooserActivity(activity))
+          activity.finish()
+        }
+        StartupMode.APP_IS_DEPRECATED -> {
+          showDialog(
+            FORCED_DEPRECATION_NOTICE_DIALOG_FRAGMENT_TAG,
+            ForcedAppDeprecationNoticeDialogFragment::newInstance
+          )
+        }
+        StartupMode.OPTIONAL_UPDATE_AVAILABLE -> {
+          showDialog(
+            OPTIONAL_UPDATE_NOTICE_DIALOG_FRAGMENT_TAG,
+            OptionalAppDeprecationNoticeDialogFragment::newInstance
+          )
+        }
+        StartupMode.OS_IS_DEPRECATED -> {
+          showDialog(
+            OS_UPDATE_NOTICE_DIALOG_FRAGMENT_TAG,
+            OsDeprecationNoticeDialogFragment::newInstance
+          )
+        }
+        else -> {
+          // In all other cases (including errors when the startup state fails to load or is
+          // defaulted), assume the user needs to be onboarded.
+          activity.startActivity(OnboardingActivity.createOnboardingActivity(activity))
+          activity.finish()
+        }
+      }
+    } else {
+      processLegacyStartupMode()
+    }
+  }
+
+  private fun processLegacyStartupMode() {
     when (startupMode) {
       StartupMode.USER_IS_ONBOARDED -> {
         activity.startActivity(ProfileChooserActivity.createProfileChooserActivity(activity))

domain/src/main/java/org/oppia/android/domain/onboarding/AppStartupStateController.kt

@@ -1,16 +1,25 @@
 package org.oppia.android.domain.onboarding
 
+import android.os.Build
+import kotlinx.coroutines.runBlocking
 import org.oppia.android.app.model.AppStartupState
 import org.oppia.android.app.model.AppStartupState.BuildFlavorNoticeMode
 import org.oppia.android.app.model.AppStartupState.StartupMode
 import org.oppia.android.app.model.BuildFlavor
+import org.oppia.android.app.model.DeprecationResponseDatabase
 import org.oppia.android.app.model.OnboardingState
 import org.oppia.android.data.persistence.PersistentCacheStore
+import org.oppia.android.domain.BuildConfig
 import org.oppia.android.domain.oppialogger.OppiaLogger
 import org.oppia.android.util.data.DataProvider
 import org.oppia.android.util.data.DataProviders.Companion.transform
 import org.oppia.android.util.extensions.getStringFromBundle
 import org.oppia.android.util.locale.OppiaLocale
+import org.oppia.android.util.platformparameter.EnableAppAndOsDeprecation
+import org.oppia.android.util.platformparameter.ForcedAppUpdateVersionCode
+import org.oppia.android.util.platformparameter.LowestSupportedApiLevel
+import org.oppia.android.util.platformparameter.OptionalAppUpdateVersionCode
+import org.oppia.android.util.platformparameter.PlatformParameterValue
 import javax.inject.Inject
 import javax.inject.Singleton
 
@@ -23,7 +32,16 @@ class AppStartupStateController @Inject constructor(
   private val oppiaLogger: OppiaLogger,
   private val expirationMetaDataRetriever: ExpirationMetaDataRetriever,
   private val machineLocale: OppiaLocale.MachineLocale,
-  private val currentBuildFlavor: BuildFlavor
+  private val currentBuildFlavor: BuildFlavor,
+  private val deprecationController: DeprecationController,
+  @EnableAppAndOsDeprecation
+  private val enableAppAndOsDeprecation: PlatformParameterValue<Boolean>,
+  @OptionalAppUpdateVersionCode
+  private val optionalAppUpdateVersionCode: PlatformParameterValue<Int>,
+  @ForcedAppUpdateVersionCode
+  private val forcedAppUpdateVersionCode: PlatformParameterValue<Int>,
+  @LowestSupportedApiLevel
+  private val lowestSupportedApiLevel: PlatformParameterValue<Int>
 ) {
   private val onboardingFlowStore by lazy {
     cacheStoreFactory.create("on_boarding_flow", OnboardingState.getDefaultInstance())
@@ -116,11 +134,51 @@ class AppStartupStateController @Inject constructor(
   }
 
   private fun computeAppStartupMode(onboardingState: OnboardingState): StartupMode {
-    return when {
-      hasAppExpired() -> StartupMode.APP_IS_DEPRECATED
-      onboardingState.alreadyOnboardedApp -> StartupMode.USER_IS_ONBOARDED
-      else -> StartupMode.USER_NOT_YET_ONBOARDED
+    // Return old logic if app and os feature flag is not enabled
+    if (!enableAppAndOsDeprecation.value) {
+      return when {
+        hasAppExpired() -> StartupMode.APP_IS_DEPRECATED
+        onboardingState.alreadyOnboardedApp -> StartupMode.USER_IS_ONBOARDED
+        else -> StartupMode.USER_NOT_YET_ONBOARDED
+      }
     }
+
+    val deprecationDataProvider = deprecationController.getDeprecationDatabase()
+
+    var deprecationDatabase = DeprecationResponseDatabase.newBuilder().build()
+
+    runBlocking {
+      deprecationDataProvider.retrieveData().transform {
+        deprecationDatabase = it
+      }
+    }
+
+    val appVersionCode = BuildConfig.VERSION_CODE
+
+    val osIsDeprecated = lowestSupportedApiLevel.value > Build.VERSION.SDK_INT &&
+      deprecationDatabase.osDeprecationResponse.deprecatedVersion != Build.VERSION.SDK_INT
+    val appUpdateIsAvailable = optionalAppUpdateVersionCode.value > appVersionCode ||
+      forcedAppUpdateVersionCode.value > appVersionCode
+
+    if (onboardingState.alreadyOnboardedApp) {
+      if (osIsDeprecated) {
+        return StartupMode.OS_IS_DEPRECATED
+      }
+
+      if (appUpdateIsAvailable) {
+        if (forcedAppUpdateVersionCode.value > appVersionCode) {
+          return StartupMode.APP_IS_DEPRECATED
+        }
+
+        if (deprecationDatabase.appDeprecationResponse.deprecatedVersion !=
+          optionalAppUpdateVersionCode.value
+        ) {
+          return StartupMode.OPTIONAL_UPDATE_AVAILABLE
+        }
+      }
+
+      return StartupMode.USER_IS_ONBOARDED
+    } else return StartupMode.USER_NOT_YET_ONBOARDED
   }
 
   private fun computeBuildNoticeMode(