Save and Exit: Add FF and update links (#6852)

Task/Issue URL:
https://app.asana.com/1/137249556945/project/1202552961248957/task/1211395150174608

### Description

This PR adds a FF and updates the private search and duck.ai settings
links.

### Steps to test this PR

QA-optional

Author: 0nko

app/src/main/java/com/duckduckgo/app/privatesearch/PrivateSearchActivity.kt

@@ -33,27 +33,32 @@ import com.duckduckgo.common.ui.DuckDuckGoActivity
 import com.duckduckgo.common.ui.viewbinding.viewBinding
 import com.duckduckgo.di.scopes.ActivityScope
 import com.duckduckgo.navigation.api.GlobalActivityStarter
+import com.duckduckgo.settings.api.SettingsPageFeature
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
 import javax.inject.Inject
 
 @InjectWith(ActivityScope::class)
 @ContributeToActivityStarter(PrivateSearchScreenNoParams::class)
 class PrivateSearchActivity : DuckDuckGoActivity() {
-
     @Inject
     lateinit var globalActivityStarter: GlobalActivityStarter
 
+    @Inject
+    lateinit var settingsPageFeature: SettingsPageFeature
+
     private val viewModel: PrivateSearchViewModel by bindViewModel()
     private val binding: ActivityPrivateSearchBinding by viewBinding()
 
-    private val autocompleteToggleListener = CompoundButton.OnCheckedChangeListener { _, isChecked ->
-        viewModel.onAutocompleteSettingChanged(isChecked)
-    }
+    private val autocompleteToggleListener =
+        CompoundButton.OnCheckedChangeListener { _, isChecked ->
+            viewModel.onAutocompleteSettingChanged(isChecked)
+        }
 
-    private val autocompleteRecentlyVisitedSitesToggleListener = CompoundButton.OnCheckedChangeListener { _, isChecked ->
-        viewModel.onAutocompleteRecentlyVisitedSitesSettingChanged(isChecked)
-    }
+    private val autocompleteRecentlyVisitedSitesToggleListener =
+        CompoundButton.OnCheckedChangeListener { _, isChecked ->
+            viewModel.onAutocompleteRecentlyVisitedSitesSettingChanged(isChecked)
+        }
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -93,7 +98,8 @@ class PrivateSearchActivity : DuckDuckGoActivity() {
                 }
             }.launchIn(lifecycleScope)
 
-        viewModel.commands()
+        viewModel
+            .commands()
             .flowWithLifecycle(lifecycle, Lifecycle.State.CREATED)
             .onEach { processCommand(it) }
             .launchIn(lifecycleScope)
@@ -106,16 +112,23 @@ class PrivateSearchActivity : DuckDuckGoActivity() {
     }
 
     private fun launchCustomizeSearchWebPage() {
+        val settingsUrl =
+            if (settingsPageFeature.saveAndExitSerpSettings().isEnabled()) {
+                DUCKDUCKGO_SETTINGS_WEB_LINK_WITH_RETURN_PARAM
+            } else {
+                DUCKDUCKGO_SETTINGS_WEB_LINK
+            }
         globalActivityStarter.start(
             this,
             WebViewActivityWithParams(
-                url = DUCKDUCKGO_SETTINGS_WEB_LINK,
+                url = settingsUrl,
                 getString(R.string.privateSearchMoreSearchSettingsTitle),
             ),
         )
     }
 
     companion object {
         private const val DUCKDUCKGO_SETTINGS_WEB_LINK = "https://duckduckgo.com/settings"
+        private const val DUCKDUCKGO_SETTINGS_WEB_LINK_WITH_RETURN_PARAM = "https://duckduckgo.com/settings?return=privateSearch"
     }
 }

duckchat/duckchat-impl/src/main/java/com/duckduckgo/duckchat/impl/ui/settings/DuckChatSettingsViewModel.kt

@@ -27,6 +27,7 @@ import com.duckduckgo.duckchat.impl.pixel.DuckChatPixelName
 import com.duckduckgo.duckchat.impl.ui.settings.DuckChatSettingsViewModel.Command.OpenLink
 import com.duckduckgo.duckchat.impl.ui.settings.DuckChatSettingsViewModel.Command.OpenLinkInNewTab
 import com.duckduckgo.duckchat.impl.ui.settings.DuckChatSettingsViewModel.Command.OpenShortcutSettings
+import com.duckduckgo.settings.api.SettingsPageFeature
 import com.duckduckgo.subscriptions.api.SubscriptionRebrandingFeatureToggle
 import kotlinx.coroutines.channels.BufferOverflow.DROP_OLDEST
 import kotlinx.coroutines.channels.Channel
@@ -43,8 +44,8 @@ class DuckChatSettingsViewModel @Inject constructor(
     private val pixel: Pixel,
     private val rebrandingAiFeaturesEnabled: SubscriptionRebrandingFeatureToggle,
     private val inputScreenDiscoveryFunnel: InputScreenDiscoveryFunnel,
+    private val settingsPageFeature: SettingsPageFeature,
 ) : ViewModel() {
-
     private val commandChannel = Channel<Command>(capacity = 1, onBufferOverflow = DROP_OLDEST)
     val commands = commandChannel.receiveAsFlow()
 
@@ -56,23 +57,31 @@ class DuckChatSettingsViewModel @Inject constructor(
         val isRebrandingAiFeaturesEnabled: Boolean = false,
     )
 
-    val viewState = combine(
-        duckChat.observeEnableDuckChatUserSetting(),
-        duckChat.observeInputScreenUserSettingEnabled(),
-    ) { isDuckChatUserEnabled, isInputScreenEnabled ->
-        ViewState(
-            isDuckChatUserEnabled = isDuckChatUserEnabled,
-            isInputScreenEnabled = isInputScreenEnabled,
-            shouldShowShortcuts = isDuckChatUserEnabled,
-            shouldShowInputScreenToggle = isDuckChatUserEnabled && duckChat.isInputScreenFeatureAvailable(),
-            isRebrandingAiFeaturesEnabled = rebrandingAiFeaturesEnabled.isAIFeaturesRebrandingEnabled(),
-        )
-    }.stateIn(viewModelScope, SharingStarted.WhileSubscribed(), ViewState())
+    val viewState =
+        combine(
+            duckChat.observeEnableDuckChatUserSetting(),
+            duckChat.observeInputScreenUserSettingEnabled(),
+        ) { isDuckChatUserEnabled, isInputScreenEnabled ->
+            ViewState(
+                isDuckChatUserEnabled = isDuckChatUserEnabled,
+                isInputScreenEnabled = isInputScreenEnabled,
+                shouldShowShortcuts = isDuckChatUserEnabled,
+                shouldShowInputScreenToggle = isDuckChatUserEnabled && duckChat.isInputScreenFeatureAvailable(),
+                isRebrandingAiFeaturesEnabled = rebrandingAiFeaturesEnabled.isAIFeaturesRebrandingEnabled(),
+            )
+        }.stateIn(viewModelScope, SharingStarted.WhileSubscribed(), ViewState())
 
     sealed class Command {
-        data class OpenLink(val link: String) : Command()
-        data class OpenLinkInNewTab(val link: String) : Command()
+        data class OpenLink(
+            val link: String,
+        ) : Command()
+
+        data class OpenLinkInNewTab(
+            val link: String,
+        ) : Command()
+
         data object OpenShortcutSettings : Command()
+
         data object LaunchFeedback : Command()
     }
 
@@ -117,7 +126,13 @@ class DuckChatSettingsViewModel @Inject constructor(
 
     fun duckChatSearchAISettingsClicked() {
         viewModelScope.launch {
-            commandChannel.send(OpenLinkInNewTab(DUCK_CHAT_SEARCH_AI_SETTINGS_LINK))
+            val settingsLink =
+                if (settingsPageFeature.saveAndExitSerpSettings().isEnabled()) {
+                    DUCK_CHAT_SEARCH_AI_SETTINGS_LINK_WITH_RETURN_PARAM
+                } else {
+                    DUCK_CHAT_SEARCH_AI_SETTINGS_LINK
+                }
+            commandChannel.send(OpenLinkInNewTab(settingsLink))
             pixel.fire(DuckChatPixelName.DUCK_CHAT_SEARCH_ASSIST_SETTINGS_BUTTON_CLICKED)
         }
     }
@@ -153,5 +168,6 @@ class DuckChatSettingsViewModel @Inject constructor(
     companion object {
         const val DUCK_CHAT_LEARN_MORE_LINK = "https://duckduckgo.com/duckduckgo-help-pages/aichat/"
         const val DUCK_CHAT_SEARCH_AI_SETTINGS_LINK = "https://duckduckgo.com/settings?ko=-1#aifeatures"
+        const val DUCK_CHAT_SEARCH_AI_SETTINGS_LINK_WITH_RETURN_PARAM = "https://duckduckgo.com/settings?ko=-1&return=aiFeatures#aifeatures"
     }
 }