Tw 2046 group name validation

assets/l10n/intl_en.arb

@@ -3098,5 +3098,6 @@
   "logoutDialogWarning": "You will lose access to encrypted messages. We recommend that you enable chat backups before logging out",
   "copyNumber": "Copy number",
   "callViaCarrier": "Call via Carrier",
-  "scanQrCodeToJoin": "Installation of the mobile application will allow you to contact people from your phone's address book, your chats will be synchronised between devices"
+  "scanQrCodeToJoin": "Installation of the mobile application will allow you to contact people from your phone's address book, your chats will be synchronised between devices",
+  "thisFieldCannotBeBlank": "This field cannot be blank"
 }

lib/di/global/get_it_initializer.dart

@@ -79,6 +79,7 @@ import 'package:fluffychat/domain/usecase/search/search_recent_chat_interactor.d
 import 'package:fluffychat/domain/usecase/search/server_search_interactor.dart';
 import 'package:fluffychat/domain/usecase/settings/save_language_interactor.dart';
 import 'package:fluffychat/domain/usecase/settings/update_profile_interactor.dart';
+import 'package:fluffychat/domain/usecase/verify_name_interactor.dart';
 import 'package:fluffychat/event/twake_event_dispatcher.dart';
 import 'package:fluffychat/pages/chat/chat_pinned_events/pinned_events_controller.dart';
 import 'package:fluffychat/utils/famedlysdk_store.dart';
@@ -344,6 +345,10 @@ class GetItInitializer {
     getIt.registerSingleton<DownloadMediaFileInteractor>(
       DownloadMediaFileInteractor(),
     );
+
+    getIt.registerFactory<VerifyNameInteractor>(
+      () => VerifyNameInteractor(),
+    );
   }
 
   void _bindingControllers() {

lib/domain/app_state/validator/verify_name_view_state.dart

@@ -0,0 +1,8 @@
+import 'package:fluffychat/presentation/state/failure.dart';
+import 'package:fluffychat/presentation/state/success.dart';
+
+class VerifyNameSuccessViewState extends UIState {}
+
+class VerifyNameFailure extends FeatureFailure {
+  const VerifyNameFailure(dynamic exception) : super(exception: exception);
+}

lib/domain/exception/verify_name_exception.dart

@@ -0,0 +1,21 @@
+import 'package:equatable/equatable.dart';
+
+abstract class VerifyNameException extends Equatable implements Exception {
+  static const nameWithOnlySpace = 'The name cannot contain only spaces';
+  static const emptyName = 'The name cannot be empty';
+
+  final String? message;
+  const VerifyNameException(this.message);
+
+  @override
+  List<Object?> get props => [message];
+}
+
+class NameWithSpaceOnlyException extends VerifyNameException {
+  const NameWithSpaceOnlyException()
+      : super(VerifyNameException.nameWithOnlySpace);
+}
+
+class EmptyNameException extends VerifyNameException {
+  const EmptyNameException() : super(VerifyNameException.emptyName);
+}

lib/domain/model/extensions/list_validator_extension.dart

@@ -0,0 +1,20 @@
+import 'package:dartz/dartz.dart';
+import 'package:fluffychat/app_state/failure.dart';
+import 'package:fluffychat/app_state/success.dart';
+import 'package:fluffychat/domain/app_state/validator/verify_name_view_state.dart';
+import 'package:fluffychat/domain/model/verification/new_name_request.dart';
+import 'package:fluffychat/domain/model/verification/validator.dart';
+
+extension ListValidatorExtension on List<Validator> {
+  Either<Failure, Success> getValidatorNameViewState(
+    NewNameRequest newNameRequest,
+  ) {
+    for (final validator in this) {
+      final either = validator.validate(newNameRequest);
+      if (either.isLeft()) {
+        return either;
+      }
+    }
+    return Right<Failure, Success>(VerifyNameSuccessViewState());
+  }
+}

lib/domain/model/extensions/validator_failure_extension.dart

@@ -0,0 +1,15 @@
+import 'package:fluffychat/domain/app_state/validator/verify_name_view_state.dart';
+import 'package:fluffychat/domain/exception/verify_name_exception.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_gen/gen_l10n/l10n.dart';
+
+extension ValidatorFailureExtension on VerifyNameFailure {
+  String getMessage(BuildContext context) {
+    if (exception is NameWithSpaceOnlyException ||
+        exception is EmptyNameException) {
+      return L10n.of(context)!.thisFieldCannotBeBlank;
+    } else {
+      return '';
+    }
+  }
+}

lib/domain/model/verification/composite_name_validator.dart

@@ -0,0 +1,20 @@
+import 'package:dartz/dartz.dart';
+import 'package:fluffychat/app_state/failure.dart';
+import 'package:fluffychat/app_state/success.dart';
+import 'package:fluffychat/domain/app_state/validator/verify_name_view_state.dart';
+import 'package:fluffychat/domain/model/verification/new_name_request.dart';
+import 'package:fluffychat/domain/model/verification/validator.dart';
+import 'package:fluffychat/domain/model/extensions/list_validator_extension.dart';
+
+class CompositeNameValidator extends Validator<NewNameRequest> {
+  final List<Validator> _listValidator;
+
+  CompositeNameValidator(this._listValidator);
+
+  @override
+  Either<Failure, Success> validate(NewNameRequest value) {
+    return _listValidator.isNotEmpty
+        ? _listValidator.getValidatorNameViewState(value)
+        : Right<Failure, Success>(VerifyNameSuccessViewState());
+  }
+}

lib/domain/model/verification/empty_name_validator.dart

@@ -0,0 +1,20 @@
+import 'package:dartz/dartz.dart';
+import 'package:fluffychat/app_state/failure.dart';
+import 'package:fluffychat/app_state/success.dart';
+import 'package:fluffychat/domain/app_state/validator/verify_name_view_state.dart';
+import 'package:fluffychat/domain/exception/verify_name_exception.dart';
+import 'package:fluffychat/domain/model/verification/new_name_request.dart';
+import 'package:fluffychat/domain/model/verification/validator.dart';
+
+class EmptyNameValidator extends Validator<NewNameRequest> {
+  @override
+  Either<Failure, Success> validate(NewNameRequest value) {
+    if (value.value == null || value.value!.isEmpty) {
+      return const Left<Failure, Success>(
+        VerifyNameFailure(EmptyNameException()),
+      );
+    } else {
+      return Right<Failure, Success>(VerifyNameSuccessViewState());
+    }
+  }
+}

lib/domain/model/verification/name_with_space_only_validator.dart

@@ -0,0 +1,22 @@
+import 'package:dartz/dartz.dart';
+import 'package:fluffychat/app_state/failure.dart';
+import 'package:fluffychat/app_state/success.dart';
+import 'package:fluffychat/domain/app_state/validator/verify_name_view_state.dart';
+import 'package:fluffychat/domain/exception/verify_name_exception.dart';
+import 'package:fluffychat/domain/model/verification/new_name_request.dart';
+import 'package:fluffychat/domain/model/verification/validator.dart';
+
+class NameWithSpaceOnlyValidator extends Validator<NewNameRequest> {
+  @override
+  Either<Failure, Success> validate(NewNameRequest value) {
+    if (value.value != null &&
+        value.value!.isNotEmpty &&
+        value.value!.trim().isEmpty) {
+      return const Left<Failure, Success>(
+        VerifyNameFailure(NameWithSpaceOnlyException()),
+      );
+    } else {
+      return Right<Failure, Success>(VerifyNameSuccessViewState());
+    }
+  }
+}

lib/domain/model/verification/new_name_request.dart

@@ -0,0 +1,10 @@
+import 'package:equatable/equatable.dart';
+
+class NewNameRequest with EquatableMixin {
+  final String? value;
+
+  NewNameRequest(this.value);
+
+  @override
+  List<Object?> get props => [value];
+}

lib/domain/model/verification/validator.dart

@@ -0,0 +1,7 @@
+import 'package:dartz/dartz.dart';
+import 'package:fluffychat/app_state/failure.dart';
+import 'package:fluffychat/app_state/success.dart';
+
+abstract class Validator<T> {
+  Either<Failure, Success> validate(T value);
+}

lib/domain/usecase/verify_name_interactor.dart

@@ -0,0 +1,21 @@
+import 'package:dartz/dartz.dart';
+import 'package:fluffychat/app_state/failure.dart';
+import 'package:fluffychat/app_state/success.dart';
+import 'package:fluffychat/domain/app_state/validator/verify_name_view_state.dart';
+import 'package:fluffychat/domain/model/verification/composite_name_validator.dart';
+import 'package:fluffychat/domain/model/verification/new_name_request.dart';
+import 'package:fluffychat/domain/model/verification/validator.dart';
+
+class VerifyNameInteractor {
+  Either<Failure, Success> execute(
+    String? newName,
+    List<Validator> listValidator,
+  ) {
+    try {
+      return CompositeNameValidator(listValidator)
+          .validate(NewNameRequest(newName));
+    } catch (exception) {
+      return Left<Failure, Success>(VerifyNameFailure(exception));
+    }
+  }
+}

lib/pages/chat_details/chat_details_edit.dart

@@ -5,9 +5,14 @@ import 'package:fluffychat/di/global/get_it_initializer.dart';
 import 'package:fluffychat/domain/app_state/room/update_group_chat_failure.dart';
 import 'package:fluffychat/domain/app_state/room/update_group_chat_success.dart';
 import 'package:fluffychat/domain/app_state/room/upload_content_state.dart';
+import 'package:fluffychat/domain/app_state/validator/verify_name_view_state.dart';
+import 'package:fluffychat/domain/model/extensions/validator_failure_extension.dart';
+import 'package:fluffychat/domain/model/verification/empty_name_validator.dart';
+import 'package:fluffychat/domain/model/verification/name_with_space_only_validator.dart';
 import 'package:fluffychat/domain/usecase/room/update_group_chat_interactor.dart';
 import 'package:fluffychat/domain/usecase/room/upload_content_for_web_interactor.dart';
 import 'package:fluffychat/domain/usecase/room/upload_content_interactor.dart';
+import 'package:fluffychat/domain/usecase/verify_name_interactor.dart';
 import 'package:fluffychat/pages/chat_details/chat_details_edit_context_menu_actions.dart';
 import 'package:fluffychat/pages/chat_details/chat_details_edit_view.dart';
 import 'package:fluffychat/pages/chat_details/chat_details_edit_view_style.dart';
@@ -54,6 +59,7 @@ class ChatDetailsEditController extends State<ChatDetailsEdit>
   final uploadContentInteractor = getIt.get<UploadContentInteractor>();
   final uploadContentWebInteractor =
       getIt.get<UploadContentInBytesInteractor>();
+  final verifyNameInteractor = getIt.get<VerifyNameInteractor>();
 
   Room? room;
 
@@ -73,6 +79,7 @@ class ChatDetailsEditController extends State<ChatDetailsEdit>
   final MenuController menuController = MenuController();
 
   final isEditedGroupInfoNotifier = ValueNotifier<bool>(false);
+  final isValidGroupNameNotifier = ValueNotifier<bool>(false);
 
   Client get client => Matrix.of(context).client;
 
@@ -443,6 +450,22 @@ class ChatDetailsEditController extends State<ChatDetailsEdit>
     avatarAssetEntity = null;
   }
 
+  String? getErrorMessage(String content) {
+    if (content == room?.name) {
+      return null;
+    }
+    final result = verifyNameInteractor.execute(
+      content,
+      [EmptyNameValidator(), NameWithSpaceOnlyValidator()],
+    );
+
+    return result.fold(
+      (failure) =>
+          failure is VerifyNameFailure ? failure.getMessage(context) : null,
+      (success) => null,
+    );
+  }
+
   @override
   void dispose() {
     _clearImageInMemory();
@@ -463,11 +486,12 @@ class ChatDetailsEditController extends State<ChatDetailsEdit>
       if (_isEditAvatar) {
         return;
       }
-
       isEditedGroupInfoNotifier.value =
           groupNameTextEditingController.text != room?.name;
       groupNameEmptyNotifier.value =
           groupNameTextEditingController.text.isEmpty;
+      isValidGroupNameNotifier.value =
+          getErrorMessage(groupNameTextEditingController.text) == null;
     });
   }
 

lib/pages/chat_details/chat_details_edit_view.dart

@@ -67,23 +67,28 @@ class ChatDetailsEditView extends StatelessWidget {
             ),
             const Spacer(),
             ValueListenableBuilder(
-              valueListenable: controller.isEditedGroupInfoNotifier,
-              builder: (context, value, child) {
-                if (!value) {
-                  return const SizedBox.shrink();
-                }
-                return child!;
+              valueListenable: controller.isValidGroupNameNotifier,
+              builder: (context, isValid, child) {
+                return ValueListenableBuilder(
+                  valueListenable: controller.isEditedGroupInfoNotifier,
+                  builder: (context, value, child) {
+                    if (!value || !isValid) {
+                      return const SizedBox.shrink();
+                    }
+                    return child!;
+                  },
+                  child: Padding(
+                    padding: ChatDetailEditViewStyle.doneIconPadding,
+                    child: IconButton(
+                      highlightColor: Colors.transparent,
+                      hoverColor: Colors.transparent,
+                      splashColor: Colors.transparent,
+                      onPressed: () => controller.handleSaveAction(context),
+                      icon: const Icon(Icons.done),
+                    ),
+                  ),
+                );
               },
-              child: Padding(
-                padding: ChatDetailEditViewStyle.doneIconPadding,
-                child: IconButton(
-                  highlightColor: Colors.transparent,
-                  hoverColor: Colors.transparent,
-                  splashColor: Colors.transparent,
-                  onPressed: () => controller.handleSaveAction(context),
-                  icon: const Icon(Icons.done),
-                ),
-              ),
             ),
           ],
         ),
@@ -323,40 +328,48 @@ class _GroupNameField extends StatelessWidget {
   Widget build(BuildContext context) {
     return Padding(
       padding: ChatDetailEditViewStyle.textFieldPadding,
-      child: TextField(
-        style: ChatDetailEditViewStyle.textFieldStyle(context),
-        controller: controller.groupNameTextEditingController,
-        contextMenuBuilder: mobileTwakeContextMenuBuilder,
-        focusNode: controller.groupNameFocusNode,
-        decoration: InputDecoration(
-          border: OutlineInputBorder(
-            borderSide: BorderSide(color: Theme.of(context).colorScheme.shadow),
-          ),
-          labelText: L10n.of(context)!.widgetName,
-          labelStyle: ChatDetailEditViewStyle.textFieldLabelStyle(context),
-          hintText: L10n.of(context)!.enterGroupName,
-          hintStyle: ChatDetailEditViewStyle.textFieldHintStyle(context),
-          contentPadding: ChatDetailEditViewStyle.contentPadding,
-          suffixIcon: ValueListenableBuilder<bool>(
-            valueListenable: controller.groupNameEmptyNotifier,
-            builder: (context, isGroupNameEmpty, child) {
-              if (isGroupNameEmpty) {
-                return child!;
-              }
-
-              return IconButton(
-                onPressed: () =>
-                    controller.groupNameTextEditingController.clear(),
-                icon: Icon(
-                  Icons.cancel_outlined,
-                  size: ChatDetailEditViewStyle.clearIconSize,
-                  color: Theme.of(context).colorScheme.onSurfaceVariant,
-                ),
-              );
-            },
-            child: const SizedBox.shrink(),
-          ),
-        ),
+      child: ValueListenableBuilder(
+        valueListenable: controller.isValidGroupNameNotifier,
+        builder: (context, value, _) {
+          return TextField(
+            style: ChatDetailEditViewStyle.textFieldStyle(context),
+            controller: controller.groupNameTextEditingController,
+            contextMenuBuilder: mobileTwakeContextMenuBuilder,
+            focusNode: controller.groupNameFocusNode,
+            decoration: InputDecoration(
+              border: OutlineInputBorder(
+                borderSide:
+                    BorderSide(color: Theme.of(context).colorScheme.shadow),
+              ),
+              labelText: L10n.of(context)!.widgetName,
+              labelStyle: ChatDetailEditViewStyle.textFieldLabelStyle(context),
+              hintText: L10n.of(context)!.enterGroupName,
+              hintStyle: ChatDetailEditViewStyle.textFieldHintStyle(context),
+              contentPadding: ChatDetailEditViewStyle.contentPadding,
+              errorText: controller.getErrorMessage(
+                controller.groupNameTextEditingController.text,
+              ),
+              suffixIcon: ValueListenableBuilder<bool>(
+                valueListenable: controller.groupNameEmptyNotifier,
+                builder: (context, isGroupNameEmpty, child) {
+                  if (isGroupNameEmpty) {
+                    return child!;
+                  }
+                  return IconButton(
+                    onPressed: () =>
+                        controller.groupNameTextEditingController.clear(),
+                    icon: Icon(
+                      Icons.cancel_outlined,
+                      size: ChatDetailEditViewStyle.clearIconSize,
+                      color: Theme.of(context).colorScheme.onSurfaceVariant,
+                    ),
+                  );
+                },
+                child: const SizedBox.shrink(),
+              ),
+            ),
+          );
+        },
       ),
     );
   }