TW-1302: Apply for search in unencrypted chat

lib/pages/chat_search/chat_search_view.dart

@@ -8,6 +8,7 @@ import 'package:fluffychat/pages/chat_list/chat_list_header_style.dart';
 import 'package:fluffychat/pages/chat_search/chat_search.dart';
 import 'package:fluffychat/pages/chat_search/chat_search_style.dart';
 import 'package:fluffychat/pages/search/server_search_controller.dart';
+import 'package:fluffychat/presentation/model/search/presentation_server_side_empty_search.dart';
 import 'package:fluffychat/presentation/model/search/presentation_server_side_search.dart';
 import 'package:fluffychat/presentation/same_type_events_builder/same_type_events_builder.dart';
 import 'package:fluffychat/presentation/same_type_events_builder/same_type_events_controller.dart';
@@ -84,23 +85,35 @@ class _ServerSearchView extends StatelessWidget {
         ValueListenableBuilder(
           valueListenable: serverSearchController.searchResultsNotifier,
           builder: (context, searchResults, child) {
-            final events = (searchResults as PresentationServerSideSearch)
-                .searchResults
-                .map((result) => result.getEvent(context))
-                .whereNotNull()
-                .toList();
-            return SliverList.builder(
-              itemCount: events.length,
-              itemBuilder: (context, index) {
-                final event = events[index];
-                return _SearchItem(
-                  event: event,
-                  searchWord: controller.serverSearchController.debouncerValue,
-                  onTap: controller.onEventTap,
-                );
-              },
-            );
+            if (searchResults is PresentationServerSideSearch) {
+              final events = searchResults.searchResults
+                  .map((result) => result.getEvent(context))
+                  .whereNotNull()
+                  .toList();
+              return SliverList.builder(
+                itemCount: events.length,
+                itemBuilder: (context, index) {
+                  final event = events[index];
+                  return _SearchItem(
+                    event: event,
+                    searchWord:
+                        controller.serverSearchController.debouncerValue,
+                    onTap: controller.onEventTap,
+                  );
+                },
+              );
+            }
+
+            if (searchResults is PresentationServerSideEmptySearch) {
+              return const SliverToBoxAdapter(
+                child: EmptySearchWidget(),
+              );
+            }
+            return child!;
           },
+          child: const SliverToBoxAdapter(
+            child: SizedBox(),
+          ),
         ),
         ValueListenableBuilder(
           valueListenable: serverSearchController.isLoadingMoreNotifier,

lib/pages/search/search_view.dart

@@ -5,6 +5,7 @@ import 'package:fluffychat/pages/search/recent_item_widget.dart';
 import 'package:fluffychat/pages/search/search.dart';
 import 'package:fluffychat/pages/search/search_view_style.dart';
 import 'package:fluffychat/pages/search/server_search_view.dart';
+import 'package:fluffychat/presentation/model/search/presentation_server_side_empty_search.dart';
 import 'package:fluffychat/presentation/model/search/presentation_server_side_search.dart';
 import 'package:fluffychat/widgets/twake_components/twake_icon_button.dart';
 import 'package:fluffychat/widgets/twake_components/twake_loading/center_loading_indicator.dart';
@@ -74,6 +75,14 @@ class SearchView extends StatelessWidget {
               valueListenable:
                   searchController.serverSearchController.searchResultsNotifier,
               builder: ((context, searchResults, child) {
+                if (searchResults is PresentationServerSideEmptySearch) {
+                  return _SearchHeader(
+                    header: L10n.of(context)!.messages,
+                    searchController: searchController,
+                    needShowMore: false,
+                  );
+                }
+
                 if (searchResults is PresentationServerSideSearch) {
                   if (searchResults.searchResults.isEmpty) {
                     return child!;

lib/pages/search/server_search_controller.dart

@@ -7,7 +7,7 @@ import 'package:fluffychat/di/global/get_it_initializer.dart';
 import 'package:fluffychat/domain/model/search/server_side_search_categories.dart';
 import 'package:fluffychat/pages/search/search_debouncer_mixin.dart';
 import 'package:fluffychat/domain/usecase/search/server_search_interactor.dart';
-import 'package:fluffychat/presentation/model/search/presentation_server_side.dart';
+import 'package:fluffychat/presentation/model/search/presentation_server_side_state.dart';
 import 'package:fluffychat/presentation/model/search/presentation_server_side_empty_search.dart';
 import 'package:fluffychat/presentation/model/search/presentation_server_side_search.dart';
 import 'package:flutter/material.dart';
@@ -23,8 +23,8 @@ class ServerSearchController with SearchDebouncerMixin {
 
   final _serverSearchInteractor = getIt.get<ServerSearchInteractor>();
 
-  final searchResultsNotifier = ValueNotifier<PresentationServerSide>(
-    PresentationServerSide(),
+  final searchResultsNotifier = ValueNotifier<PresentationServerSideUIState>(
+    PresentationServerSideInitial(),
   );
 
   static const int _limitServerSideSearchFilter = 20;
@@ -79,8 +79,10 @@ class ServerSearchController with SearchDebouncerMixin {
           } else {
             searchResultsNotifier.value = PresentationServerSideSearch(
               searchResults: [
-                ...(searchResultsNotifier.value as PresentationServerSideSearch)
-                    .searchResults,
+                if (searchResultsNotifier.value is PresentationServerSideSearch)
+                  ...(searchResultsNotifier.value
+                          as PresentationServerSideSearch)
+                      .searchResults,
                 ...success.results ?? [],
               ],
             );
@@ -134,9 +136,10 @@ class ServerSearchController with SearchDebouncerMixin {
   void loadMore() {
     if (_searchCategories == null ||
         isLoadingMoreNotifier.value ||
-        (searchResultsNotifier.value as PresentationServerSideSearch)
-            .searchResults
-            .isEmpty ||
+        ((searchResultsNotifier.value is PresentationServerSideSearch) &&
+            (searchResultsNotifier.value as PresentationServerSideSearch)
+                .searchResults
+                .isEmpty) ||
         _nextBatch == null) {
       return;
     }

lib/pages/search/server_search_view.dart

@@ -26,20 +26,20 @@ class ServerSearchMessagesList extends StatelessWidget {
       child: ValueListenableBuilder(
         valueListenable:
             searchController.serverSearchController.searchResultsNotifier,
-        builder: (context, severSearchNotifier, child) {
-          if (severSearchNotifier is PresentationServerSideEmptySearch) {
+        builder: (context, serverSearchNotifier, child) {
+          if (serverSearchNotifier is PresentationServerSideEmptySearch) {
             return child!;
           }
 
-          if (severSearchNotifier is PresentationServerSideSearch) {
+          if (serverSearchNotifier is PresentationServerSideSearch) {
             return ListView.builder(
               shrinkWrap: true,
               physics: const ClampingScrollPhysics(),
-              itemCount: severSearchNotifier.searchResults.length,
+              itemCount: serverSearchNotifier.searchResults.length,
               padding: ServerSearchViewStyle.paddingListItem,
               itemBuilder: ((context, index) {
                 final searchResult =
-                    severSearchNotifier.searchResults[index].result;
+                    serverSearchNotifier.searchResults[index].result;
                 final room = Matrix.of(context).client.getRoomById(
                       searchResult?.roomId ?? '',
                     );

lib/presentation/model/search/presentation_server_side_empty_search.dart

@@ -1,6 +1,6 @@
-import 'package:fluffychat/presentation/model/search/presentation_server_side.dart';
+import 'package:fluffychat/presentation/model/search/presentation_server_side_state.dart';
 
-class PresentationServerSideEmptySearch extends PresentationServerSide {
+class PresentationServerSideEmptySearch extends PresentationServerSideUIState {
   @override
   List<Object> get props => [];
 }

lib/presentation/model/search/presentation_server_side_search.dart

@@ -1,7 +1,7 @@
-import 'package:fluffychat/presentation/model/search/presentation_server_side.dart';
+import 'package:fluffychat/presentation/model/search/presentation_server_side_state.dart';
 import 'package:matrix/matrix.dart';
 
-class PresentationServerSideSearch extends PresentationServerSide {
+class PresentationServerSideSearch extends PresentationServerSideUIState {
   final List<Result> searchResults;
 
   PresentationServerSideSearch({

lib/presentation/model/search/presentation_server_side_state.dart

@@ -0,0 +1,8 @@
+import 'package:equatable/equatable.dart';
+
+abstract class PresentationServerSideUIState with EquatableMixin {
+  @override
+  List<Object?> get props => [];
+}
+
+class PresentationServerSideInitial extends PresentationServerSideUIState {}