Start conversion from Fragment Nav Framework to utilizing a centralized AppSettingsRouter.

app/src/main/java/org/thoughtcrime/securesms/components/settings/app/AppSettingsActivity.kt

@@ -7,17 +7,18 @@ import androidx.navigation.NavDirections
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import io.reactivex.rxjava3.subjects.PublishSubject
 import io.reactivex.rxjava3.subjects.Subject
+import org.signal.core.util.getParcelableExtraCompat
 import org.signal.donations.InAppPaymentType
 import org.thoughtcrime.securesms.MainActivity
 import org.thoughtcrime.securesms.R
 import org.thoughtcrime.securesms.components.settings.DSLSettingsActivity
-import org.thoughtcrime.securesms.components.settings.app.chats.folders.CreateFoldersFragmentArgs
-import org.thoughtcrime.securesms.components.settings.app.notifications.profiles.EditNotificationProfileScheduleFragmentArgs
+import org.thoughtcrime.securesms.components.settings.app.routes.AppSettingsRoute
 import org.thoughtcrime.securesms.components.settings.app.subscription.GooglePayComponent
 import org.thoughtcrime.securesms.components.settings.app.subscription.GooglePayRepository
 import org.thoughtcrime.securesms.help.HelpFragment
 import org.thoughtcrime.securesms.keyvalue.SettingsValues
 import org.thoughtcrime.securesms.keyvalue.SignalStore
+import org.thoughtcrime.securesms.profiles.manage.UsernameEditMode
 import org.thoughtcrime.securesms.recipients.Recipient
 import org.thoughtcrime.securesms.service.KeyCachingService
 import org.thoughtcrime.securesms.util.CachedInflater
@@ -25,8 +26,7 @@ import org.thoughtcrime.securesms.util.DynamicTheme
 import org.thoughtcrime.securesms.util.SignalE164Util
 import org.thoughtcrime.securesms.util.navigation.safeNavigate
 
-private const val START_LOCATION = "app.settings.start.location"
-private const val START_ARGUMENTS = "app.settings.start.arguments"
+private const val START_ROUTE = "app.settings.args.START_ROUTE"
 private const val NOTIFICATION_CATEGORY = "android.intent.category.NOTIFICATION_PREFERENCES"
 private const val STATE_WAS_CONFIGURATION_UPDATED = "app.settings.state.configuration.updated"
 private const val EXTRA_PERFORM_ACTION_ON_CREATE = "extra_perform_action_on_create"
@@ -48,42 +48,41 @@ class AppSettingsActivity : DSLSettingsActivity(), GooglePayComponent {
     val startingAction: NavDirections? = if (intent?.categories?.contains(NOTIFICATION_CATEGORY) == true) {
       AppSettingsFragmentDirections.actionDirectToNotificationsSettingsFragment()
     } else {
-      when (StartLocation.fromCode(intent?.getIntExtra(START_LOCATION, StartLocation.HOME.code))) {
-        StartLocation.HOME -> null
-        StartLocation.BACKUPS -> AppSettingsFragmentDirections.actionDirectToBackupsPreferenceFragment()
-        StartLocation.HELP -> AppSettingsFragmentDirections.actionDirectToHelpFragment()
-          .setStartCategoryIndex(intent.getIntExtra(HelpFragment.START_CATEGORY_INDEX, 0))
-
-        StartLocation.PROXY -> AppSettingsFragmentDirections.actionDirectToEditProxyFragment()
-        StartLocation.NOTIFICATIONS -> AppSettingsFragmentDirections.actionDirectToNotificationsSettingsFragment()
-        StartLocation.CHANGE_NUMBER -> AppSettingsFragmentDirections.actionDirectToChangeNumberFragment()
-        StartLocation.SUBSCRIPTIONS -> AppSettingsFragmentDirections.actionDirectToManageDonations().setDirectToCheckoutType(InAppPaymentType.RECURRING_DONATION)
-        StartLocation.BOOST -> AppSettingsFragmentDirections.actionDirectToManageDonations().setDirectToCheckoutType(InAppPaymentType.ONE_TIME_DONATION)
-        StartLocation.MANAGE_SUBSCRIPTIONS -> AppSettingsFragmentDirections.actionDirectToManageDonations()
-        StartLocation.NOTIFICATION_PROFILES -> AppSettingsFragmentDirections.actionDirectToNotificationProfiles()
-        StartLocation.CREATE_NOTIFICATION_PROFILE -> AppSettingsFragmentDirections.actionDirectToCreateNotificationProfiles()
-        StartLocation.NOTIFICATION_PROFILE_DETAILS -> AppSettingsFragmentDirections.actionDirectToNotificationProfileDetails(
-          EditNotificationProfileScheduleFragmentArgs.fromBundle(intent.getBundleExtra(START_ARGUMENTS)!!).profileId
+      val appSettingsRoute: AppSettingsRoute? = intent?.getParcelableExtraCompat(START_ROUTE, AppSettingsRoute::class.java)
+      when (appSettingsRoute) {
+        AppSettingsRoute.Empty -> null
+        AppSettingsRoute.BackupsRoute.Local -> AppSettingsFragmentDirections.actionDirectToBackupsPreferenceFragment()
+        is AppSettingsRoute.HelpRoute.Settings -> AppSettingsFragmentDirections.actionDirectToHelpFragment()
+          .setStartCategoryIndex(appSettingsRoute.startCategoryIndex)
+        AppSettingsRoute.DataAndStorageRoute.Proxy -> AppSettingsFragmentDirections.actionDirectToEditProxyFragment()
+        AppSettingsRoute.NotificationsRoute.Notifications -> AppSettingsFragmentDirections.actionDirectToNotificationsSettingsFragment()
+        AppSettingsRoute.ChangeNumberRoute.Start -> AppSettingsFragmentDirections.actionDirectToChangeNumberFragment()
+        is AppSettingsRoute.DonationsRoute.Donations -> AppSettingsFragmentDirections.actionDirectToManageDonations().setDirectToCheckoutType(appSettingsRoute.directToCheckoutType)
+        AppSettingsRoute.NotificationsRoute.NotificationProfiles -> AppSettingsFragmentDirections.actionDirectToNotificationProfiles()
+        is AppSettingsRoute.NotificationsRoute.EditProfile -> AppSettingsFragmentDirections.actionDirectToCreateNotificationProfiles()
+        is AppSettingsRoute.NotificationsRoute.ProfileDetails -> AppSettingsFragmentDirections.actionDirectToNotificationProfileDetails(
+          appSettingsRoute.profileId
         )
 
-        StartLocation.PRIVACY -> AppSettingsFragmentDirections.actionDirectToPrivacy()
-        StartLocation.LINKED_DEVICES -> AppSettingsFragmentDirections.actionDirectToDevices()
-        StartLocation.USERNAME_LINK -> AppSettingsFragmentDirections.actionDirectToUsernameLinkSettings()
-        StartLocation.RECOVER_USERNAME -> AppSettingsFragmentDirections.actionDirectToUsernameRecovery()
-        StartLocation.REMOTE_BACKUPS -> AppSettingsFragmentDirections.actionDirectToRemoteBackupsSettingsFragment()
-        StartLocation.CHAT_FOLDERS -> AppSettingsFragmentDirections.actionDirectToChatFoldersFragment()
-        StartLocation.CREATE_CHAT_FOLDER -> AppSettingsFragmentDirections.actionDirectToCreateFoldersFragment(
-          CreateFoldersFragmentArgs.fromBundle(intent.getBundleExtra(START_ARGUMENTS)!!).folderId,
-          CreateFoldersFragmentArgs.fromBundle(intent.getBundleExtra(START_ARGUMENTS)!!).threadIds
+        AppSettingsRoute.PrivacyRoute.Privacy -> AppSettingsFragmentDirections.actionDirectToPrivacy()
+        AppSettingsRoute.LinkDeviceRoute.LinkDevice -> AppSettingsFragmentDirections.actionDirectToDevices()
+        AppSettingsRoute.UsernameLinkRoute.UsernameLink -> AppSettingsFragmentDirections.actionDirectToUsernameLinkSettings()
+        is AppSettingsRoute.AccountRoute.Username -> AppSettingsFragmentDirections.actionDirectToUsernameRecovery()
+        is AppSettingsRoute.BackupsRoute.Remote -> AppSettingsFragmentDirections.actionDirectToRemoteBackupsSettingsFragment()
+        AppSettingsRoute.ChatFoldersRoute.ChatFolders -> AppSettingsFragmentDirections.actionDirectToChatFoldersFragment()
+        is AppSettingsRoute.ChatFoldersRoute.CreateChatFolders -> AppSettingsFragmentDirections.actionDirectToCreateFoldersFragment(
+          appSettingsRoute.folderId,
+          appSettingsRoute.threadIds
         )
 
-        StartLocation.BACKUPS_SETTINGS -> AppSettingsFragmentDirections.actionDirectToBackupsSettingsFragment()
-        StartLocation.INVITE -> AppSettingsFragmentDirections.actionDirectToInviteFragment()
-        StartLocation.MANAGE_STORAGE -> AppSettingsFragmentDirections.actionDirectToStoragePreferenceFragment()
+        AppSettingsRoute.BackupsRoute.Backups -> AppSettingsFragmentDirections.actionDirectToBackupsSettingsFragment()
+        AppSettingsRoute.Invite -> AppSettingsFragmentDirections.actionDirectToInviteFragment()
+        AppSettingsRoute.DataAndStorageRoute.DataAndStorage -> AppSettingsFragmentDirections.actionDirectToStoragePreferenceFragment()
+        else -> error("Unsupported start location: ${appSettingsRoute?.javaClass?.name}")
       }
     }
 
-    intent = intent.putExtra(START_LOCATION, StartLocation.HOME)
+    intent = intent.putExtra(START_ROUTE, AppSettingsRoute.Empty)
 
     if (startingAction == null && savedInstanceState != null) {
       wasConfigurationUpdated = savedInstanceState.getBoolean(STATE_WAS_CONFIGURATION_UPDATED)
@@ -148,123 +147,89 @@ class AppSettingsActivity : DSLSettingsActivity(), GooglePayComponent {
     @JvmStatic
     @JvmOverloads
     fun home(context: Context, action: String? = null): Intent {
-      return getIntentForStartLocation(context, StartLocation.HOME)
+      return getIntentForStartLocation(context, AppSettingsRoute.Empty)
         .putExtra(EXTRA_PERFORM_ACTION_ON_CREATE, action)
     }
 
     @JvmStatic
-    fun backups(context: Context): Intent = getIntentForStartLocation(context, StartLocation.BACKUPS)
+    fun backups(context: Context): Intent = getIntentForStartLocation(context, AppSettingsRoute.BackupsRoute.Local)
 
     @JvmStatic
     fun help(context: Context, startCategoryIndex: Int = 0): Intent {
-      return getIntentForStartLocation(context, StartLocation.HELP)
+      return getIntentForStartLocation(context, AppSettingsRoute.HelpRoute.Settings(startCategoryIndex = startCategoryIndex))
         .putExtra(HelpFragment.START_CATEGORY_INDEX, startCategoryIndex)
     }
 
     @JvmStatic
-    fun proxy(context: Context): Intent = getIntentForStartLocation(context, StartLocation.PROXY)
+    fun proxy(context: Context): Intent = getIntentForStartLocation(context, AppSettingsRoute.DataAndStorageRoute.Proxy)
 
     @JvmStatic
-    fun notifications(context: Context): Intent = getIntentForStartLocation(context, StartLocation.NOTIFICATIONS)
+    fun notifications(context: Context): Intent = getIntentForStartLocation(context, AppSettingsRoute.NotificationsRoute.Notifications)
 
     @JvmStatic
-    fun changeNumber(context: Context): Intent = getIntentForStartLocation(context, StartLocation.CHANGE_NUMBER)
+    fun changeNumber(context: Context): Intent = getIntentForStartLocation(context, AppSettingsRoute.ChangeNumberRoute.Start)
 
     @JvmStatic
-    fun subscriptions(context: Context): Intent = getIntentForStartLocation(context, StartLocation.SUBSCRIPTIONS)
+    fun subscriptions(context: Context): Intent = getIntentForStartLocation(context, AppSettingsRoute.DonationsRoute.Donations(directToCheckoutType = InAppPaymentType.RECURRING_DONATION))
 
     @JvmStatic
-    fun boost(context: Context): Intent = getIntentForStartLocation(context, StartLocation.BOOST)
+    fun boost(context: Context): Intent = getIntentForStartLocation(context, AppSettingsRoute.DonationsRoute.Donations(directToCheckoutType = InAppPaymentType.ONE_TIME_DONATION))
 
     @JvmStatic
-    fun manageSubscriptions(context: Context): Intent = getIntentForStartLocation(context, StartLocation.MANAGE_SUBSCRIPTIONS)
+    fun manageSubscriptions(context: Context): Intent = getIntentForStartLocation(context, AppSettingsRoute.DonationsRoute.Donations())
 
-    fun manageStorage(context: Context): Intent = getIntentForStartLocation(context, StartLocation.MANAGE_STORAGE)
+    fun manageStorage(context: Context): Intent = getIntentForStartLocation(context, AppSettingsRoute.DataAndStorageRoute.DataAndStorage)
 
     @JvmStatic
-    fun notificationProfiles(context: Context): Intent = getIntentForStartLocation(context, StartLocation.NOTIFICATION_PROFILES)
+    fun notificationProfiles(context: Context): Intent = getIntentForStartLocation(context, AppSettingsRoute.NotificationsRoute.NotificationProfiles)
 
     @JvmStatic
-    fun createNotificationProfile(context: Context): Intent = getIntentForStartLocation(context, StartLocation.CREATE_NOTIFICATION_PROFILE)
+    fun createNotificationProfile(context: Context): Intent = getIntentForStartLocation(context, AppSettingsRoute.NotificationsRoute.EditProfile())
 
     @JvmStatic
-    fun privacy(context: Context): Intent = getIntentForStartLocation(context, StartLocation.PRIVACY)
+    fun privacy(context: Context): Intent = getIntentForStartLocation(context, AppSettingsRoute.PrivacyRoute.Privacy)
 
     @JvmStatic
     fun notificationProfileDetails(context: Context, profileId: Long): Intent {
-      val arguments = EditNotificationProfileScheduleFragmentArgs.Builder(profileId, false)
-        .build()
-        .toBundle()
-
-      return getIntentForStartLocation(context, StartLocation.NOTIFICATION_PROFILE_DETAILS)
-        .putExtra(START_ARGUMENTS, arguments)
+      return getIntentForStartLocation(context, AppSettingsRoute.NotificationsRoute.ProfileDetails(profileId = profileId))
     }
 
     @JvmStatic
-    fun linkedDevices(context: Context): Intent = getIntentForStartLocation(context, StartLocation.LINKED_DEVICES)
+    fun linkedDevices(context: Context): Intent = getIntentForStartLocation(context, AppSettingsRoute.LinkDeviceRoute.LinkDevice)
 
     @JvmStatic
-    fun usernameLinkSettings(context: Context): Intent = getIntentForStartLocation(context, StartLocation.USERNAME_LINK)
+    fun usernameLinkSettings(context: Context): Intent = getIntentForStartLocation(context, AppSettingsRoute.UsernameLinkRoute.UsernameLink)
 
     @JvmStatic
-    fun usernameRecovery(context: Context): Intent = getIntentForStartLocation(context, StartLocation.RECOVER_USERNAME)
+    fun usernameRecovery(context: Context): Intent = getIntentForStartLocation(context, AppSettingsRoute.AccountRoute.Username(mode = UsernameEditMode.RECOVERY))
 
     @JvmStatic
-    fun remoteBackups(context: Context): Intent = getIntentForStartLocation(context, StartLocation.REMOTE_BACKUPS)
+    fun remoteBackups(context: Context): Intent = getIntentForStartLocation(context, AppSettingsRoute.BackupsRoute.Remote())
 
     @JvmStatic
-    fun chatFolders(context: Context): Intent = getIntentForStartLocation(context, StartLocation.CHAT_FOLDERS)
+    fun chatFolders(context: Context): Intent = getIntentForStartLocation(context, AppSettingsRoute.ChatFoldersRoute.ChatFolders)
 
     @JvmStatic
     fun createChatFolder(context: Context, id: Long = -1, threadIds: LongArray?): Intent {
-      val arguments = CreateFoldersFragmentArgs.Builder(id, threadIds ?: longArrayOf())
-        .build()
-        .toBundle()
-
-      return getIntentForStartLocation(context, StartLocation.CREATE_CHAT_FOLDER).putExtra(START_ARGUMENTS, arguments)
+      return getIntentForStartLocation(
+        context,
+        AppSettingsRoute.ChatFoldersRoute.CreateChatFolders(
+          folderId = id,
+          threadIds = threadIds ?: longArrayOf()
+        )
+      )
     }
 
     @JvmStatic
-    fun backupsSettings(context: Context): Intent = getIntentForStartLocation(context, StartLocation.BACKUPS_SETTINGS)
+    fun backupsSettings(context: Context): Intent = getIntentForStartLocation(context, AppSettingsRoute.BackupsRoute.Backups)
 
     @JvmStatic
-    fun invite(context: Context): Intent = getIntentForStartLocation(context, StartLocation.INVITE)
+    fun invite(context: Context): Intent = getIntentForStartLocation(context, AppSettingsRoute.Invite)
 
-    private fun getIntentForStartLocation(context: Context, startLocation: StartLocation): Intent {
+    private fun getIntentForStartLocation(context: Context, startRoute: AppSettingsRoute): Intent {
       return Intent(context, AppSettingsActivity::class.java)
         .putExtra(ARG_NAV_GRAPH, R.navigation.app_settings_with_change_number)
-        .putExtra(START_LOCATION, startLocation.code)
-    }
-  }
-
-  private enum class StartLocation(val code: Int) {
-    HOME(0),
-    BACKUPS(1),
-    HELP(2),
-    PROXY(3),
-    NOTIFICATIONS(4),
-    CHANGE_NUMBER(5),
-    SUBSCRIPTIONS(6),
-    BOOST(7),
-    MANAGE_SUBSCRIPTIONS(8),
-    NOTIFICATION_PROFILES(9),
-    CREATE_NOTIFICATION_PROFILE(10),
-    NOTIFICATION_PROFILE_DETAILS(11),
-    PRIVACY(12),
-    LINKED_DEVICES(13),
-    USERNAME_LINK(14),
-    RECOVER_USERNAME(15),
-    REMOTE_BACKUPS(16),
-    CHAT_FOLDERS(17),
-    CREATE_CHAT_FOLDER(18),
-    BACKUPS_SETTINGS(19),
-    INVITE(20),
-    MANAGE_STORAGE(21);
-
-    companion object {
-      fun fromCode(code: Int?): StartLocation {
-        return entries.find { code == it.code } ?: HOME
-      }
+        .putExtra(START_ROUTE, startRoute)
     }
   }
 }

app/src/main/java/org/thoughtcrime/securesms/components/settings/app/AppSettingsFragment.kt

@@ -3,7 +3,6 @@ package org.thoughtcrime.securesms.components.settings.app
 import android.os.Bundle
 import android.view.View
 import android.widget.Toast
-import androidx.annotation.IdRes
 import androidx.annotation.StringRes
 import androidx.compose.foundation.background
 import androidx.compose.foundation.clickable
@@ -39,8 +38,9 @@ import androidx.compose.ui.res.vectorResource
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
 import androidx.fragment.app.viewModels
+import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.lifecycleScope
-import androidx.navigation.NavDirections
+import androidx.lifecycle.repeatOnLifecycle
 import androidx.navigation.fragment.findNavController
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.Flow
@@ -67,6 +67,8 @@ import org.thoughtcrime.securesms.banner.ui.compose.DefaultBanner
 import org.thoughtcrime.securesms.banner.ui.compose.Importance
 import org.thoughtcrime.securesms.components.compose.TextWithBetaLabel
 import org.thoughtcrime.securesms.components.emoji.Emojifier
+import org.thoughtcrime.securesms.components.settings.app.routes.AppSettingsRoute
+import org.thoughtcrime.securesms.components.settings.app.routes.AppSettingsRouter
 import org.thoughtcrime.securesms.components.settings.app.subscription.BadgeImageMedium
 import org.thoughtcrime.securesms.components.settings.app.subscription.InAppPaymentsRepository
 import org.thoughtcrime.securesms.components.settings.app.subscription.completed.InAppPaymentsBottomSheetDelegate
@@ -83,9 +85,38 @@ import org.thoughtcrime.securesms.util.navigation.safeNavigate
 class AppSettingsFragment : ComposeFragment(), Callbacks {
 
   private val viewModel: AppSettingsViewModel by viewModels()
+  private val appSettingsRouter by viewModels<AppSettingsRouter>()
 
   override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
     viewLifecycleOwner.lifecycle.addObserver(InAppPaymentsBottomSheetDelegate(childFragmentManager, viewLifecycleOwner))
+
+    viewLifecycleOwner.lifecycleScope.launch {
+      repeatOnLifecycle(Lifecycle.State.RESUMED) {
+        appSettingsRouter.currentRoute.collect { route ->
+          when (route) {
+            is AppSettingsRoute.BackupsRoute.Remote -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_remoteBackupsSettingsFragment)
+            is AppSettingsRoute.AccountRoute.Account -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_accountSettingsFragment)
+            is AppSettingsRoute.LinkDeviceRoute.LinkDevice -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_linkDeviceFragment)
+            is AppSettingsRoute.DonationsRoute.Donations -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_manageDonationsFragment)
+            is AppSettingsRoute.AppearanceRoute.Appearance -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_appearanceSettingsFragment)
+            is AppSettingsRoute.ChatsRoute.Chats -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_chatsSettingsFragment)
+            is AppSettingsRoute.StoriesRoute.Privacy -> findNavController().safeNavigate(AppSettingsFragmentDirections.actionAppSettingsFragmentToStoryPrivacySettings(route.titleId))
+            is AppSettingsRoute.NotificationsRoute.Notifications -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_notificationsSettingsFragment)
+            is AppSettingsRoute.PrivacyRoute.Privacy -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_privacySettingsFragment)
+            is AppSettingsRoute.BackupsRoute.Backups -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_backupsSettingsFragment)
+            is AppSettingsRoute.DataAndStorageRoute.DataAndStorage -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_dataAndStorageSettingsFragment)
+            is AppSettingsRoute.AppUpdates -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_appUpdatesSettingsFragment)
+            is AppSettingsRoute.Payments -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_paymentsActivity)
+            is AppSettingsRoute.HelpRoute.Settings -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_helpSettingsFragment)
+            is AppSettingsRoute.Invite -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_inviteFragment)
+            is AppSettingsRoute.InternalRoute.Internal -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_internalSettingsFragment)
+            is AppSettingsRoute.AccountRoute.ManageProfile -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_manageProfileActivity)
+            is AppSettingsRoute.UsernameLinkRoute.UsernameLink -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_usernameLinkSettingsFragment)
+            else -> error("Unsupported route: ${route.javaClass.name}")
+          }
+        }
+      }
+    }
   }
 
   @Composable
@@ -118,12 +149,8 @@ class AppSettingsFragment : ComposeFragment(), Callbacks {
     requireActivity().finishAfterTransition()
   }
 
-  override fun navigate(actionId: Int) {
-    findNavController().safeNavigate(actionId)
-  }
-
-  override fun navigate(directions: NavDirections) {
-    findNavController().safeNavigate(directions)
+  override fun navigate(route: AppSettingsRoute) {
+    appSettingsRouter.navigateTo(route)
   }
 
   override fun onResume() {
@@ -203,7 +230,7 @@ private fun AppSettingsContent(
               BackupsWarningRow(
                 text = stringResource(R.string.AppSettingsFragment__renew_your_signal_backups_subscription),
                 onClick = {
-                  callbacks.navigate(R.id.action_appSettingsFragment_to_remoteBackupsSettingsFragment)
+                  callbacks.navigate(AppSettingsRoute.BackupsRoute.Remote())
                 }
               )
 
@@ -219,7 +246,7 @@ private fun AppSettingsContent(
                 text = stringResource(R.string.AppSettingsFragment__couldnt_complete_backup),
                 onClick = {
                   BackupRepository.markBackupFailedIndicatorClicked()
-                  callbacks.navigate(R.id.action_appSettingsFragment_to_remoteBackupsSettingsFragment)
+                  callbacks.navigate(AppSettingsRoute.BackupsRoute.Remote())
                 }
               )
 
@@ -235,7 +262,7 @@ private fun AppSettingsContent(
                 text = stringResource(R.string.AppSettingsFragment__couldnt_redeem_your_backups_subscription),
                 onClick = {
                   BackupRepository.markBackupAlreadyRedeemedIndicatorClicked()
-                  callbacks.navigate(R.id.action_appSettingsFragment_to_remoteBackupsSettingsFragment)
+                  callbacks.navigate(AppSettingsRoute.BackupsRoute.Remote())
                 }
               )
 
@@ -252,7 +279,7 @@ private fun AppSettingsContent(
                 icon = ImageVector.vectorResource(R.drawable.symbol_error_circle_fill_24),
                 iconTint = MaterialTheme.colorScheme.error,
                 onClick = {
-                  callbacks.navigate(R.id.action_appSettingsFragment_to_remoteBackupsSettingsFragment)
+                  callbacks.navigate(AppSettingsRoute.BackupsRoute.Remote())
                 }
               )
 
@@ -268,7 +295,7 @@ private fun AppSettingsContent(
             text = stringResource(R.string.AccountSettingsFragment__account),
             icon = painterResource(R.drawable.symbol_person_circle_24),
             onClick = {
-              callbacks.navigate(R.id.action_appSettingsFragment_to_accountSettingsFragment)
+              callbacks.navigate(AppSettingsRoute.AccountRoute.Account)
             }
           )
         }
@@ -278,7 +305,7 @@ private fun AppSettingsContent(
             text = stringResource(R.string.preferences__linked_devices),
             icon = painterResource(R.drawable.symbol_devices_24),
             onClick = {
-              callbacks.navigate(R.id.action_appSettingsFragment_to_linkDeviceFragment)
+              callbacks.navigate(AppSettingsRoute.LinkDeviceRoute.LinkDevice)
             },
             enabled = isRegisteredAndUpToDate
           )
@@ -312,7 +339,7 @@ private fun AppSettingsContent(
             },
             onClick = {
               if (state.allowUserToGoToDonationManagementScreen) {
-                callbacks.navigate(R.id.action_appSettingsFragment_to_manageDonationsFragment)
+                callbacks.navigate(AppSettingsRoute.DonationsRoute.Donations())
               } else {
                 CommunicationActions.openBrowserLink(context, donateUrl)
               }
@@ -332,7 +359,7 @@ private fun AppSettingsContent(
             text = stringResource(R.string.preferences__appearance),
             icon = painterResource(R.drawable.symbol_appearance_24),
             onClick = {
-              callbacks.navigate(R.id.action_appSettingsFragment_to_appearanceSettingsFragment)
+              callbacks.navigate(AppSettingsRoute.AppearanceRoute.Appearance)
             }
           )
         }
@@ -342,7 +369,7 @@ private fun AppSettingsContent(
             text = stringResource(R.string.preferences_chats__chats),
             icon = painterResource(R.drawable.symbol_chat_24),
             onClick = {
-              callbacks.navigate(R.id.action_appSettingsFragment_to_chatsSettingsFragment)
+              callbacks.navigate(AppSettingsRoute.ChatsRoute.Chats)
             },
             enabled = state.legacyLocalBackupsEnabled || isRegisteredAndUpToDate
           )
@@ -353,7 +380,7 @@ private fun AppSettingsContent(
             text = stringResource(R.string.preferences__stories),
             icon = painterResource(R.drawable.symbol_stories_24),
             onClick = {
-              callbacks.navigate(AppSettingsFragmentDirections.actionAppSettingsFragmentToStoryPrivacySettings(R.string.preferences__stories))
+              callbacks.navigate(AppSettingsRoute.StoriesRoute.Privacy(titleId = R.string.preferences__stories))
             },
             enabled = isRegisteredAndUpToDate
           )
@@ -364,7 +391,7 @@ private fun AppSettingsContent(
             text = stringResource(R.string.preferences__notifications),
             icon = painterResource(R.drawable.symbol_bell_24),
             onClick = {
-              callbacks.navigate(R.id.action_appSettingsFragment_to_notificationsSettingsFragment)
+              callbacks.navigate(AppSettingsRoute.NotificationsRoute.Notifications)
             },
             enabled = isRegisteredAndUpToDate
           )
@@ -375,7 +402,7 @@ private fun AppSettingsContent(
             text = stringResource(R.string.preferences__privacy),
             icon = painterResource(R.drawable.symbol_lock_24),
             onClick = {
-              callbacks.navigate(R.id.action_appSettingsFragment_to_privacySettingsFragment)
+              callbacks.navigate(AppSettingsRoute.PrivacyRoute.Privacy)
             },
             enabled = isRegisteredAndUpToDate
           )
@@ -398,7 +425,7 @@ private fun AppSettingsContent(
                 )
               },
               onClick = {
-                callbacks.navigate(R.id.action_appSettingsFragment_to_backupsSettingsFragment)
+                callbacks.navigate(AppSettingsRoute.BackupsRoute.Backups)
               },
               onLongClick = {
                 callbacks.copyRemoteBackupsSubscriberIdToClipboard()
@@ -413,7 +440,7 @@ private fun AppSettingsContent(
             text = stringResource(R.string.preferences__data_and_storage),
             icon = painterResource(R.drawable.symbol_data_24),
             onClick = {
-              callbacks.navigate(R.id.action_appSettingsFragment_to_dataAndStorageSettingsFragment)
+              callbacks.navigate(AppSettingsRoute.DataAndStorageRoute.DataAndStorage)
             }
           )
         }
@@ -424,7 +451,7 @@ private fun AppSettingsContent(
               text = "App updates",
               icon = painterResource(R.drawable.symbol_calendar_24),
               onClick = {
-                callbacks.navigate(R.id.action_appSettingsFragment_to_appUpdatesSettingsFragment)
+                callbacks.navigate(AppSettingsRoute.AppUpdates)
               }
             )
           }
@@ -467,7 +494,7 @@ private fun AppSettingsContent(
                 )
               },
               onClick = {
-                callbacks.navigate(R.id.action_appSettingsFragment_to_paymentsActivity)
+                callbacks.navigate(AppSettingsRoute.Payments)
               }
             )
           }
@@ -482,7 +509,7 @@ private fun AppSettingsContent(
             text = stringResource(R.string.preferences__help),
             icon = painterResource(R.drawable.symbol_help_24),
             onClick = {
-              callbacks.navigate(R.id.action_appSettingsFragment_to_helpSettingsFragment)
+              callbacks.navigate(AppSettingsRoute.HelpRoute.Settings())
             }
           )
         }
@@ -492,7 +519,7 @@ private fun AppSettingsContent(
             text = stringResource(R.string.AppSettingsFragment__invite_your_friends),
             icon = painterResource(R.drawable.symbol_invite_24),
             onClick = {
-              callbacks.navigate(R.id.action_appSettingsFragment_to_inviteFragment)
+              callbacks.navigate(AppSettingsRoute.Invite)
             }
           )
         }
@@ -506,7 +533,7 @@ private fun AppSettingsContent(
             Rows.TextRow(
               text = stringResource(R.string.preferences__internal_preferences),
               onClick = {
-                callbacks.navigate(R.id.action_appSettingsFragment_to_internalSettingsFragment)
+                callbacks.navigate(AppSettingsRoute.InternalRoute.Internal)
               }
             )
           }
@@ -558,7 +585,7 @@ private fun BioRow(
     modifier = Modifier
       .clickable(
         onClick = {
-          callbacks.navigate(R.id.action_appSettingsFragment_to_manageProfileActivity)
+          callbacks.navigate(AppSettingsRoute.AccountRoute.ManageProfile)
         }
       )
       .horizontalGutters()
@@ -632,7 +659,7 @@ private fun BioRow(
     if (hasUsername) {
       IconButtons.IconButton(
         onClick = {
-          callbacks.navigate(R.id.action_appSettingsFragment_to_usernameLinkSettingsFragment)
+          callbacks.navigate(AppSettingsRoute.UsernameLinkRoute.UsernameLink)
         },
         size = 36.dp,
         colors = IconButtons.iconButtonColors(
@@ -711,8 +738,7 @@ private fun BioRowPreview() {
 
 private interface Callbacks {
   fun onNavigationClick(): Unit = error("Not implemented.")
-  fun navigate(@IdRes actionId: Int): Unit = error("Not implemented")
-  fun navigate(directions: NavDirections): Unit = error("Not implemented")
+  fun navigate(route: AppSettingsRoute): Unit = error("Not implemented")
   fun copyDonorBadgeSubscriberIdToClipboard(): Unit = error("Not implemented")
   fun copyRemoteBackupsSubscriberIdToClipboard(): Unit = error("Not implemented")
 }

app/src/main/java/org/thoughtcrime/securesms/components/settings/app/routes/AppSettingsRoute.kt

@@ -0,0 +1,231 @@
+/*
+ * Copyright 2025 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+package org.thoughtcrime.securesms.components.settings.app.routes
+
+import android.os.Parcelable
+import androidx.annotation.StringRes
+import kotlinx.parcelize.Parcelize
+import org.signal.donations.InAppPaymentType
+import org.thoughtcrime.securesms.database.model.DistributionListId
+import org.thoughtcrime.securesms.groups.ParcelableGroupId
+import org.thoughtcrime.securesms.profiles.manage.UsernameEditMode
+import org.thoughtcrime.securesms.recipients.RecipientId
+
+/**
+ * Describes a route that the AppSettings screen can open. Every route listed here is displayed in
+ * the PRIMARY (detail) pane of the AppSettingsScreen.
+ */
+@Parcelize
+sealed interface AppSettingsRoute : Parcelable {
+  /**
+   * Empty state, displayed when there is no current route. In this case, the "top" of our
+   * scaffold navigator should be the SECONDARY (list) pane.
+   */
+  data object Empty : AppSettingsRoute
+
+  @Parcelize
+  sealed interface AccountRoute : AppSettingsRoute {
+    data object Account : AccountRoute
+    data object ManageProfile : AccountRoute
+    data object AdvancedPinSettings : AccountRoute
+    data object DeleteAccount : AccountRoute
+    data object ExportAccountData : AccountRoute
+    data object OldDeviceTransfer : AccountRoute
+    data class Username(val mode: UsernameEditMode = UsernameEditMode.NORMAL) : AccountRoute
+  }
+
+  data object Payments : AppSettingsRoute
+  data object Invite : AppSettingsRoute
+  data object AppUpdates : AppSettingsRoute
+
+  @Parcelize
+  sealed interface StoriesRoute : AppSettingsRoute {
+    data class Privacy(@StringRes val titleId: Int) : StoriesRoute
+    data object MyStory : StoriesRoute
+    data class PrivateStory(val distributionListId: DistributionListId) : StoriesRoute
+    data class GroupStory(val groupId: ParcelableGroupId) : StoriesRoute
+    data object OnlyShareWith : StoriesRoute
+    data object AllExcept : StoriesRoute
+    data object SignalConnections : StoriesRoute
+    data class EditName(val distributionListId: DistributionListId, val name: String) : StoriesRoute
+    data class AddViewers(val distributionListId: DistributionListId) : StoriesRoute
+  }
+
+  @Parcelize
+  sealed interface UsernameLinkRoute : AppSettingsRoute {
+    data object UsernameLink : UsernameLinkRoute
+    data object QRColorPicker : UsernameLinkRoute
+    data object Share : UsernameLinkRoute
+  }
+
+  @Parcelize
+  sealed interface BackupsRoute : AppSettingsRoute {
+    data object Backups : BackupsRoute
+    data object Local : BackupsRoute
+    data class Remote(val backupLaterSelected: Boolean = false) : BackupsRoute
+    data object DisplayKey : BackupsRoute
+  }
+
+  @Parcelize
+  sealed interface NotificationsRoute : AppSettingsRoute {
+    data object Notifications : NotificationsRoute
+    data object NotificationProfiles : NotificationsRoute
+    data class EditProfile(val profileId: Long = -1L) : NotificationsRoute
+    data class ProfileDetails(val profileId: Long) : NotificationsRoute
+    data class AddAllowedMembers(val profileId: Long) : NotificationsRoute
+
+    data class SelectRecipients(val profileId: Long, val currentSelection: Array<RecipientId>? = null) : NotificationsRoute {
+      override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as SelectRecipients
+
+        if (profileId != other.profileId) return false
+        if (!currentSelection.contentEquals(other.currentSelection)) return false
+
+        return true
+      }
+
+      override fun hashCode(): Int {
+        var result = profileId.hashCode()
+        result = 31 * result + (currentSelection?.contentHashCode() ?: 0)
+        return result
+      }
+    }
+
+    data class EditSchedule(val profileId: Long, val createMode: Boolean) : NotificationsRoute
+    data class Created(val profileId: Long) : NotificationsRoute
+  }
+
+  @Parcelize
+  sealed interface DonationsRoute : AppSettingsRoute {
+    data class Donations(
+      val directToCheckoutType: InAppPaymentType = InAppPaymentType.UNKNOWN
+    ) : DonationsRoute
+
+    data object Badges : DonationsRoute
+    data object Receipts : DonationsRoute
+    data class Receipt(val id: Long) : DonationsRoute
+    data object LearnMore : DonationsRoute
+    data object Featured : DonationsRoute
+  }
+
+  @Parcelize
+  sealed interface InternalRoute : AppSettingsRoute {
+    data object Internal : InternalRoute
+    data object DonorErrorConfiguration : InternalRoute
+    data object StoryDialogs : InternalRoute
+    data object Search : InternalRoute
+    data object SvrPlayground : InternalRoute
+    data object ChatSpringboard : InternalRoute
+    data object OneTimeDonationConfiguration : InternalRoute
+    data object TerminalDonationConfiguration : InternalRoute
+    data object BackupPlayground : InternalRoute
+    data object StorageServicePlayground : InternalRoute
+    data object SqlitePlayground : InternalRoute
+    data object ConversationTestFragment : InternalRoute
+  }
+
+  @Parcelize
+  sealed interface PrivacyRoute : AppSettingsRoute {
+    data object Privacy : PrivacyRoute
+    data object BlockedUsers : PrivacyRoute
+    data object Advanced : PrivacyRoute
+    data object ExpiringMessages : PrivacyRoute
+    data object PhoneNumberPrivacy : PrivacyRoute
+    data object ScreenLock : PrivacyRoute
+  }
+
+  @Parcelize
+  sealed interface DataAndStorageRoute : AppSettingsRoute {
+    data object DataAndStorage : DataAndStorageRoute
+    data object Storage : DataAndStorageRoute
+    data object Proxy : DataAndStorageRoute
+  }
+
+  @Parcelize
+  sealed interface HelpRoute : AppSettingsRoute {
+    data class Settings(
+      val startCategoryIndex: Int = 0
+    ) : HelpRoute
+
+    data object Help : HelpRoute
+    data object DebugLog : HelpRoute
+    data object Licenses : HelpRoute
+  }
+
+  @Parcelize
+  sealed interface AppearanceRoute : AppSettingsRoute {
+    data object Appearance : AppearanceRoute
+    data object Wallpaper : AppearanceRoute
+    data object AppIconSelection : AppearanceRoute
+    data object AppIconTutorial : AppearanceRoute
+  }
+
+  @Parcelize
+  sealed interface ChatsRoute : AppSettingsRoute {
+    data object Chats : ChatsRoute
+    data object Reactions : ChatsRoute
+  }
+
+  @Parcelize
+  sealed interface ChatFoldersRoute : AppSettingsRoute {
+    data object ChatFolders : ChatFoldersRoute
+
+    data class CreateChatFolders(
+      val folderId: Long,
+      val threadIds: LongArray
+    ) : ChatFoldersRoute {
+      override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as CreateChatFolders
+
+        if (folderId != other.folderId) return false
+        if (!threadIds.contentEquals(other.threadIds)) return false
+
+        return true
+      }
+
+      override fun hashCode(): Int {
+        var result = folderId.hashCode()
+        result = 31 * result + threadIds.contentHashCode()
+        return result
+      }
+    }
+
+    data object Education : ChatFoldersRoute
+    data object ChooseChats : ChatFoldersRoute
+  }
+
+  @Parcelize
+  sealed interface LinkDeviceRoute : AppSettingsRoute {
+    data object LinkDevice : LinkDeviceRoute
+    data object Finished : LinkDeviceRoute
+    data object LearnMore : LinkDeviceRoute
+    data object Education : LinkDeviceRoute
+    data object EditName : LinkDeviceRoute
+    data object Add : LinkDeviceRoute
+    data object Intro : LinkDeviceRoute
+    data object Sync : LinkDeviceRoute
+  }
+
+  @Parcelize
+  sealed interface ChangeNumberRoute : AppSettingsRoute {
+    data object Start : ChangeNumberRoute
+    data object EnterPhoneNumber : ChangeNumberRoute
+    data object Confirm : ChangeNumberRoute
+    data object CountryPicker : ChangeNumberRoute
+    data object Verify : ChangeNumberRoute
+    data object Captcha : ChangeNumberRoute
+    data object EnterCode : ChangeNumberRoute
+    data object RegistrationLock : ChangeNumberRoute
+    data object AccountLocked : ChangeNumberRoute
+    data object PinDiffers : ChangeNumberRoute
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/settings/app/routes/AppSettingsRouter.kt

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2025 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+package org.thoughtcrime.securesms.components.settings.app.routes
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.launch
+
+/**
+ * Router which manages what screen we are displaying in app settings. Underneath, this is a ViewModel
+ * that is tied to the top-level parent, so that all screens throughout the app settings can access it.
+ *
+ * This gives a single point to navigate to a new page, but assumes that the actual backstack of routes
+ * will be handled elsewhere. This just emits routing requests.
+ */
+class AppSettingsRouter() : ViewModel() {
+
+  val currentRoute = MutableSharedFlow<AppSettingsRoute>()
+
+  fun navigateTo(route: AppSettingsRoute) {
+    viewModelScope.launch {
+      currentRoute.emit(route)
+    }
+  }
+}