Clean up input screen autocomplete integration (#6358)

Task/Issue URL:
https://app.asana.com/1/137249556945/project/1208671518894266/task/1210740194621787?focus=true

### Description
Cleans up unused variables and code copied from integration with the
browser tab fragment.

### Steps to test this PR
- [ ] Verify no changes to autocomplete behavior.

Author: LukasPaczos

duckchat/duckchat-impl/src/main/java/com/duckduckgo/duckchat/impl/inputscreen/autocomplete/AutoCompleteViewState.kt

@@ -17,11 +17,8 @@
 package com.duckduckgo.duckchat.impl.inputscreen.autocomplete
 
 import com.duckduckgo.browser.api.autocomplete.AutoComplete
-import com.duckduckgo.savedsites.api.models.SavedSite.Favorite
 
 data class AutoCompleteViewState(
     val showSuggestions: Boolean = false,
-    val showFavorites: Boolean = false,
     val searchResults: AutoComplete.AutoCompleteResult = AutoComplete.AutoCompleteResult("", emptyList()),
-    val favorites: List<Favorite> = emptyList(),
 )

duckchat/duckchat-impl/src/main/java/com/duckduckgo/duckchat/impl/inputscreen/ui/InputScreenFragment.kt

@@ -179,6 +179,7 @@ class InputScreenFragment : DuckDuckGoFragment(R.layout.fragment_input_screen) {
             binding.actionSend.icon = AppCompatResources.getDrawable(context, com.duckduckgo.mobile.android.R.drawable.ic_find_search_24)
             binding.viewPager.setCurrentItem(0, true)
             viewModel.onSearchSelected()
+            viewModel.onSearchInputTextChanged(binding.inputModeWidget.text)
         }
         onChatSelected = {
             binding.actionSend.icon = AppCompatResources.getDrawable(context, R.drawable.ic_arrow_up_24)
@@ -187,7 +188,9 @@ class InputScreenFragment : DuckDuckGoFragment(R.layout.fragment_input_screen) {
         }
         onSendMessageAvailable = { isAvailable ->
             binding.actionSend.isVisible = isAvailable
-            viewModel.triggerAutocomplete(binding.inputModeWidget.text, true, true)
+            if (binding.viewPager.currentItem == 0) {
+                viewModel.onSearchInputTextChanged(binding.inputModeWidget.text)
+            }
         }
         onVoiceInputAllowed = { isAllowed ->
             viewModel.onVoiceInputAllowedChange(isAllowed)
@@ -229,7 +232,5 @@ class InputScreenFragment : DuckDuckGoFragment(R.layout.fragment_input_screen) {
     override fun onResume() {
         super.onResume()
         viewModel.onActivityResume()
-        // TODO: This should be triggered via Flow
-        viewModel.triggerAutocomplete(binding.inputModeWidget.text, true, true)
     }
 }

duckchat/duckchat-impl/src/main/java/com/duckduckgo/duckchat/impl/inputscreen/ui/state/InputScreenVisibilityState.kt

@@ -19,4 +19,5 @@ package com.duckduckgo.duckchat.impl.inputscreen.ui.state
 data class InputScreenVisibilityState(
     val voiceInputButtonVisible: Boolean,
     val forceWebSearchButtonVisible: Boolean,
+    val autoCompleteSuggestionsVisible: Boolean,
 )

duckchat/duckchat-impl/src/main/java/com/duckduckgo/duckchat/impl/inputscreen/ui/tabs/SearchTabFragment.kt

@@ -23,28 +23,27 @@ import android.view.animation.OvershootInterpolator
 import androidx.core.content.ContextCompat
 import androidx.core.view.isVisible
 import androidx.lifecycle.ViewModelProvider
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.LinearLayoutManager
 import com.duckduckgo.anvil.annotations.InjectWith
 import com.duckduckgo.browser.api.ui.BrowserScreens.PrivateSearchScreenNoParams
 import com.duckduckgo.common.ui.DuckDuckGoFragment
-import com.duckduckgo.common.ui.view.gone
-import com.duckduckgo.common.ui.view.show
 import com.duckduckgo.common.ui.viewbinding.viewBinding
 import com.duckduckgo.common.utils.FragmentViewModelFactory
 import com.duckduckgo.di.scopes.FragmentScope
 import com.duckduckgo.duckchat.impl.R
 import com.duckduckgo.duckchat.impl.databinding.FragmentSearchTabBinding
-import com.duckduckgo.duckchat.impl.inputscreen.autocomplete.AutoCompleteViewState
 import com.duckduckgo.duckchat.impl.inputscreen.autocomplete.BrowserAutoCompleteSuggestionsAdapter
 import com.duckduckgo.duckchat.impl.inputscreen.autocomplete.OmnibarPosition.TOP
 import com.duckduckgo.duckchat.impl.inputscreen.autocomplete.SuggestionItemDecoration
-import com.duckduckgo.duckchat.impl.inputscreen.ui.util.renderIfChanged
 import com.duckduckgo.duckchat.impl.inputscreen.ui.viewmodel.InputScreenViewModel
 import com.duckduckgo.navigation.api.GlobalActivityStarter
 import com.duckduckgo.savedsites.api.views.FavoritesGridConfig
 import com.duckduckgo.savedsites.api.views.FavoritesPlacement
 import com.duckduckgo.savedsites.api.views.SavedSitesViewsProvider
 import javax.inject.Inject
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
 
 @InjectWith(FragmentScope::class)
 class SearchTabFragment : DuckDuckGoFragment(R.layout.fragment_search_tab) {
@@ -60,18 +59,11 @@ class SearchTabFragment : DuckDuckGoFragment(R.layout.fragment_search_tab) {
         ViewModelProvider(requireParentFragment(), viewModelFactory)[InputScreenViewModel::class.java]
     }
 
-    private lateinit var renderer: SearchInterstitialFragmentRenderer
-
     private lateinit var autoCompleteSuggestionsAdapter: BrowserAutoCompleteSuggestionsAdapter
 
     private val binding: FragmentSearchTabBinding by viewBinding()
     private lateinit var favoritesView: View
 
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        renderer = SearchInterstitialFragmentRenderer()
-    }
-
     override fun onViewCreated(
         view: View,
         savedInstanceState: Bundle?,
@@ -154,40 +146,17 @@ class SearchTabFragment : DuckDuckGoFragment(R.layout.fragment_search_tab) {
         )
     }
 
-    inner class SearchInterstitialFragmentRenderer {
-
-        private var lastSeenAutoCompleteViewState: AutoCompleteViewState? = null
-
-        fun renderAutocomplete(viewState: AutoCompleteViewState) {
-            renderIfChanged(viewState, lastSeenAutoCompleteViewState) {
-                lastSeenAutoCompleteViewState = viewState
-
-                if (viewState.showSuggestions || viewState.showFavorites) {
-                    if (viewState.favorites.isNotEmpty() && viewState.showFavorites) {
-                        if (binding.autoCompleteSuggestionsList.isVisible) {
-                            viewModel.autoCompleteSuggestionsGone()
-                        }
-                        binding.autoCompleteSuggestionsList.gone()
-                    } else {
-                        binding.autoCompleteSuggestionsList.show()
-                        autoCompleteSuggestionsAdapter.updateData(viewState.searchResults.query, viewState.searchResults.suggestions)
-                    }
-                } else {
-                    if (binding.autoCompleteSuggestionsList.isVisible) {
-                        viewModel.autoCompleteSuggestionsGone()
-                    }
-                    binding.autoCompleteSuggestionsList.gone()
-                }
+    private fun configureObservers() {
+        viewModel.visibilityState.onEach {
+            binding.autoCompleteSuggestionsList.isVisible = it.autoCompleteSuggestionsVisible
+            if (!it.autoCompleteSuggestionsVisible) {
+                viewModel.autoCompleteSuggestionsGone()
             }
-        }
-    }
+        }.launchIn(lifecycleScope)
 
-    private fun configureObservers() {
-        viewModel.autoCompleteViewState.observe(
-            viewLifecycleOwner,
-        ) {
-            it?.let { renderer.renderAutocomplete(it) }
-        }
+        viewModel.autoCompleteSuggestionResults.onEach {
+            autoCompleteSuggestionsAdapter.updateData(it.query, it.suggestions)
+        }.launchIn(lifecycleScope)
     }
 
     companion object {