[PART-2] TW-1690: Show external channel after search

assets/l10n/intl_en.arb

@@ -3059,5 +3059,7 @@
     "placeholders": {
       "user": {}
     }
-  }
+  },
+  "viewRoom": "View chat",
+  "joinRoomFailed": "Failed to join the room"
 }

lib/pages/search/public_room/empty_search_public_room_widget.dart

@@ -0,0 +1,61 @@
+import 'package:fluffychat/pages/search/public_room/search_public_room_view_style.dart';
+import 'package:fluffychat/widgets/avatar/avatar.dart';
+import 'package:fluffychat/widgets/twake_components/twake_text_button.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_gen/gen_l10n/l10n.dart';
+
+class EmptySearchPublicRoomWidget extends StatelessWidget {
+  final String genericSearchTerm;
+  final VoidCallback? onTapJoin;
+
+  const EmptySearchPublicRoomWidget({
+    super.key,
+    required this.genericSearchTerm,
+    this.onTapJoin,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return Padding(
+      padding: SearchPublicRoomViewStyle.paddingListItem,
+      child: Row(
+        crossAxisAlignment: CrossAxisAlignment.center,
+        children: [
+          Padding(
+            padding: SearchPublicRoomViewStyle.paddingAvatar,
+            child: Avatar(
+              name: genericSearchTerm,
+            ),
+          ),
+          Expanded(
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Text(
+                  genericSearchTerm,
+                  overflow: TextOverflow.ellipsis,
+                  maxLines: 1,
+                  style: SearchPublicRoomViewStyle.roomNameTextStyle,
+                ),
+                const SizedBox(
+                  height: SearchPublicRoomViewStyle.nameToButtonSpace,
+                ),
+                TwakeTextButton(
+                  message: L10n.of(context)!.joinRoom,
+                  styleMessage:
+                      SearchPublicRoomViewStyle.joinButtonLabelStyle(context),
+                  paddingAll: SearchPublicRoomViewStyle.paddingButton,
+                  onTap: onTapJoin,
+                  buttonDecoration:
+                      SearchPublicRoomViewStyle.actionButtonDecoration(
+                    context,
+                  ),
+                ),
+              ],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/pages/search/public_room/public_room_actions.dart

@@ -0,0 +1,26 @@
+import 'package:fluffychat/pages/search/public_room/search_public_room_view_style.dart';
+import 'package:flutter_gen/gen_l10n/l10n.dart';
+import 'package:flutter/material.dart';
+
+enum PublicRoomActions {
+  join,
+  view;
+
+  String getLabel(BuildContext context) {
+    switch (this) {
+      case PublicRoomActions.join:
+        return L10n.of(context)!.joinRoom;
+      case PublicRoomActions.view:
+        return L10n.of(context)!.viewRoom;
+    }
+  }
+
+  TextStyle? getLabelStyle(BuildContext context) {
+    switch (this) {
+      case PublicRoomActions.join:
+        return SearchPublicRoomViewStyle.joinButtonLabelStyle(context);
+      case PublicRoomActions.view:
+        return SearchPublicRoomViewStyle.viewButtonLabelStyle(context);
+    }
+  }
+}

lib/pages/search/public_room/search_public_room_controller.dart

@@ -0,0 +1,211 @@
+import 'dart:async';
+import 'package:dartz/dartz.dart';
+import 'package:fluffychat/app_state/failure.dart';
+import 'package:fluffychat/app_state/success.dart';
+import 'package:fluffychat/di/global/get_it_initializer.dart';
+import 'package:fluffychat/domain/app_state/search/public_room_state.dart';
+import 'package:fluffychat/domain/usecase/search/public_room_interactor.dart';
+import 'package:fluffychat/pages/search/public_room/public_room_actions.dart';
+import 'package:fluffychat/pages/search/search_debouncer_mixin.dart';
+import 'package:fluffychat/presentation/model/search/public_room/presentation_search_public_room.dart';
+import 'package:fluffychat/presentation/model/search/public_room/presentation_search_public_room_empty.dart';
+import 'package:fluffychat/presentation/model/search/public_room/presentation_search_public_room_state.dart';
+import 'package:fluffychat/utils/dialog/twake_dialog.dart';
+import 'package:fluffychat/utils/platform_infos.dart';
+import 'package:fluffychat/utils/string_extension.dart';
+import 'package:fluffychat/utils/twake_snackbar.dart';
+import 'package:fluffychat/widgets/matrix.dart';
+import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
+import 'package:matrix/matrix.dart';
+import 'package:flutter_gen/gen_l10n/l10n.dart';
+
+class SearchPublicRoomController with SearchDebouncerMixin {
+  SearchPublicRoomController();
+
+  final PublicRoomInteractor _publicRoomInteractor =
+      getIt.get<PublicRoomInteractor>();
+
+  final searchResultsNotifier =
+      ValueNotifier<PresentationSearchPublicRoomUIState>(
+    PresentationSearchPublicRoomInitial(),
+  );
+
+  static const int _limitPublicRoomSearchFilter = 20;
+
+  PublicRoomQueryFilter? _filter;
+
+  StreamSubscription? _searchSubscription;
+
+  bool get searchTermIsNotEmpty =>
+      _filter?.genericSearchTerm?.isNotEmpty == true;
+
+  String? get genericSearchTerm => _filter?.genericSearchTerm;
+
+  void init() {
+    initializeDebouncer((keyword) {
+      _updateFilter(keyword);
+
+      if (keyword.isEmpty) return;
+
+      if (keyword.isRoomAlias()) {
+        _resetSearchResults();
+        _searchPublicRoom();
+      } else if (keyword.isRoomId()) {
+        _handleKeywordIsRoomId();
+      }
+    });
+  }
+
+  void _updateFilter(String keyword) {
+    _filter = PublicRoomQueryFilter(
+      genericSearchTerm: keyword,
+    );
+  }
+
+  void _resetSearchResults() {
+    searchResultsNotifier.value = PresentationSearchPublicRoom(
+      searchResults: [],
+    );
+  }
+
+  void _searchPublicRoom() {
+    _searchSubscription = _publicRoomInteractor
+        .execute(
+          filter: _filter,
+          limit: _limitPublicRoomSearchFilter,
+          server: getServerName(_filter?.genericSearchTerm),
+        )
+        .listen(
+          (searchResult) => _handleListenSearchPublicRoom(searchResult),
+        );
+  }
+
+  void _handleListenSearchPublicRoom(Either<Failure, Success> searchResult) {
+    searchResult.fold(
+      (failure) {
+        if (searchResultsNotifier.value.props.isNotEmpty) {
+          return;
+        } else {
+          _resetSearchResults();
+          searchResultsNotifier.value = PresentationSearchPublicRoomEmpty();
+        }
+      },
+      (success) {
+        if (!searchTermIsNotEmpty) {
+          return;
+        }
+
+        if (success is PublicRoomSuccess) {
+          if (success.publicRoomsChunk == null ||
+              success.publicRoomsChunk!.isEmpty) {
+            searchResultsNotifier.value = PresentationSearchPublicRoomEmpty();
+          } else {
+            searchResultsNotifier.value = PresentationSearchPublicRoom(
+              searchResults: success.publicRoomsChunk!,
+            );
+          }
+        }
+      },
+    );
+  }
+
+  void _handleKeywordIsRoomId() {
+    searchResultsNotifier.value = PresentationSearchPublicRoomEmpty();
+  }
+
+  void _viewRoom(BuildContext context, String roomId) {
+    context.go('/rooms/$roomId');
+    if (!PlatformInfos.isMobile) {
+      Navigator.of(context, rootNavigator: false).pop();
+    }
+  }
+
+  String? getServerName(String? roomIdOrAlias) {
+    if (roomIdOrAlias != null) {
+      return roomIdOrAlias.getServerNameFromRoomIdOrAlias();
+    }
+    return null;
+  }
+
+  void joinRoom(
+    BuildContext context,
+    String roomIdOrAlias,
+    String? server,
+  ) async {
+    final client = Matrix.of(context).client;
+    final result = await TwakeDialog.showFutureLoadingDialogFullScreen<String>(
+      future: () => client.joinRoom(
+        roomIdOrAlias,
+        serverName: server != null ? [server] : null,
+      ),
+    );
+    if (result.error == null) {
+      if (client.getRoomById(result.result!) == null) {
+        await TwakeDialog.showFutureLoadingDialogFullScreen<SyncUpdate>(
+          future: () => client.onSync.stream.firstWhere(
+            (sync) => sync.rooms?.join?.containsKey(result.result) ?? false,
+          ),
+        );
+      }
+      if (!client.getRoomById(result.result!)!.isSpace) {
+        context.go('/rooms/${result.result!}');
+      }
+    } else {
+      TwakeSnackBar.show(context, L10n.of(context)!.joinRoomFailed);
+    }
+    if (!PlatformInfos.isMobile) {
+      Navigator.of(context, rootNavigator: false).pop();
+    }
+    return;
+  }
+
+  void handlePublicRoomActions(
+    BuildContext context,
+    PublicRoomsChunk room,
+    PublicRoomActions action,
+  ) {
+    switch (action) {
+      case PublicRoomActions.join:
+        joinRoom(
+          context,
+          room.roomId,
+          getServerName(room.roomId),
+        );
+        break;
+      case PublicRoomActions.view:
+        _viewRoom(context, room.roomId);
+        break;
+    }
+  }
+
+  PublicRoomActions? getAction(
+    BuildContext context,
+    PublicRoomsChunk room,
+  ) {
+    final client = Matrix.of(context).client;
+    if (client.getRoomById(room.roomId) != null) {
+      return PublicRoomActions.view;
+    } else if (room.joinRule == 'public') {
+      return PublicRoomActions.join;
+    }
+    return null;
+  }
+
+  void onSearchBarChanged(String keyword) {
+    if (keyword.isRoomAlias() || keyword.isRoomId()) {
+      setDebouncerValue(keyword);
+    } else {
+      setDebouncerValue('');
+      _resetSearchResults();
+    }
+  }
+
+  void dispose() {
+    super.disposeDebouncer();
+    _searchSubscription?.cancel();
+    searchResultsNotifier.dispose();
+    _resetSearchResults();
+    _filter = null;
+  }
+}